CN113438978A - Air dust removal system and method - Google Patents

Air dust removal system and method Download PDF

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Publication number
CN113438978A
CN113438978A CN201980069656.XA CN201980069656A CN113438978A CN 113438978 A CN113438978 A CN 113438978A CN 201980069656 A CN201980069656 A CN 201980069656A CN 113438978 A CN113438978 A CN 113438978A
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China
Prior art keywords
electric field
anode
dust
cathode
dedusting
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CN201980069656.XA
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Chinese (zh)
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CN113438978B (en
Inventor
唐万福
段志军
邹永安
奚勇
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Shanghai Bixiufu Enterprise Management Co Ltd
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Shanghai Bixiufu Enterprise Management Co Ltd
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Priority claimed from PCT/CN2019/112347 external-priority patent/WO2020083250A1/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

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Abstract

An air dedusting system (101) and method includes a dedusting system inlet, a dedusting system outlet, and an electric field device. The electric field device comprises an electric field device inlet (1011), an electric field device outlet (1012), a dust removing electric field cathode (10142) and a dust removing electric field anode (10141), wherein the dust removing electric field cathode (10142) and the dust removing electric field anode (10141) are used for generating an ionized dust removing electric field. The air dust removal system (101) and the method can effectively remove the particulate matters in the air.

Description

Air dust removal system and method Technical Field
The invention belongs to the field of air purification, and relates to an air dust removal system and method.
Background
The air is layered on the earth surface, is transparent, colorless and odorless, mainly consists of nitrogen and oxygen, and has important influence on human survival and production. With the continuous improvement of living standard of people, people gradually realize the importance of air quality. In the prior art, air is usually dedusted by a filter screen or the like. However, the method has unstable dust removal effect, high energy consumption and easy secondary pollution.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides an air dust removing system and method, which is used to solve the problem that the prior art cannot effectively remove dust from air. The invention creatively uses the ionization dust removal method to remove dust from air, and the method has no pressure difference, does not generate resistance to air, can collect pollutants in air in a wide variety, and has stronger dust removal capability and higher dust removal efficiency.
To achieve the above and other related objects, the present invention provides the following examples:
1. example 1 provided by the present invention: an air dust removal system comprises a dust removal system inlet, a dust removal system outlet and an electric field device.
2. Example 2 provided by the invention: including example 1 above, wherein the electric field device comprises an electric field device inlet, an electric field device outlet, a dust removal electric field cathode, and a dust removal electric field anode, the dust removal electric field cathode and the dust removal electric field anode being configured to generate an ionizing dust removal electric field.
3. Example 3 provided by the present invention: including example 2 above, wherein the dedusting electric field anode includes a first anode portion and a second anode portion, the first anode portion is proximate to the electric field device inlet, the second anode portion is proximate to the electric field device outlet, and at least one cathode support plate is disposed between the first anode portion and the second anode portion.
4. Example 4 provided by the present invention: including the above example 3, wherein the electric field device further includes an insulation mechanism for achieving insulation between the cathode support plate and the dust removal electric field anode.
5. Example 5 provided by the present invention: the method comprises the step 4, wherein an electric field flow channel is formed between the dedusting electric field anode and the dedusting electric field cathode, and the insulating mechanism is arranged outside the electric field flow channel.
6. Example 6 provided by the present invention: including the above example 4 or 5, wherein the insulating mechanism includes an insulating portion and a heat insulating portion; the insulating part is made of ceramic materials or glass materials.
7. Example 7 provided by the present invention: the method includes the above example 6, wherein the insulating part is an umbrella-shaped string ceramic column, an umbrella-shaped string glass column, a column-shaped string ceramic column or a column-shaped glass column, and glaze is hung inside and outside the umbrella or inside and outside the column.
8. Example 8 provided by the invention: including the above example 7, wherein the distance between the outer edge of the umbrella-shaped string ceramic pillar or the umbrella-shaped string glass pillar and the anode of the dust removal electric field is greater than 1.4 times the electric field distance, the sum of the distances between the umbrella-shaped protruding edges of the umbrella-shaped string ceramic pillar or the umbrella-shaped string glass pillar is greater than 1.4 times the insulation distance between the umbrella-shaped string ceramic pillar or the umbrella-shaped string glass pillar, and the total depth inside the umbrella edge of the umbrella-shaped string ceramic pillar or the umbrella-shaped string glass pillar is greater than 1.4 times the insulation distance between the umbrella-shaped string ceramic pillar or the umbrella-shaped string glass pillar.
9. Example 9 provided by the present invention: any one of the above examples 3 to 8 is included, wherein a length of the first anode portion is 1/10 to 1/4, 1/4 to 1/3, 1/3 to 1/2, 1/2 to 2/3, 2/3 to 3/4, or 3/4 to 9/10 of the dust removal electric field anode length.
10. Example 10 provided by the invention: including any of examples 3 through 9 above, wherein the length of the first anode portion is sufficiently long to remove a portion of dust, reduce dust accumulation on the insulating mechanism and the cathode support plate, and reduce electrical breakdown due to dust.
11. Example 11 provided by the present invention: including any of the above examples 3-10, wherein the second anode portion comprises a dust deposition section and a reserved dust deposition section.
12. Example 12 provided by the present invention: including any of examples 2-11 above, wherein the dedusting electric field cathode comprises at least one electrode rod.
13. Example 13 provided by the present invention: including example 12 above, wherein the electrode rod has a diameter of no greater than 3 mm.
14. Example 14 provided by the present invention: including the above examples 12 or 13, wherein the electrode rod has a shape of a needle, a polygon, a burr, a screw rod, or a column.
15. Example 15 provided by the present invention: including any of examples 2-14 above, wherein the dedusting electric field anode is comprised of a hollow tube bundle.
16. Example 16 provided by the present invention: including the above example 15, wherein the hollow cross section of the dedusting electric field anode tube bundle adopts a circular or polygonal shape.
17. Example 17 provided by the invention: including example 16 above, wherein the polygon is a hexagon.
18. Example 18 provided by the present invention: including any of examples 14-17 above, wherein the tube bundle of the dedusting electric field anodes is honeycomb shaped.
19. Example 19 provided by the present invention: including any of examples 2-18 above, wherein the dedusting electric field cathode is penetrated within the dedusting electric field anode.
20. Example 20 provided by the present invention: including any one of the above examples 2 to 19, wherein the electric field device performs dust removal processing when the electric field is deposited with dust to a certain extent.
21. Example 21 provided by the present invention: including the above example 20, in which the electric field device detects the electric field current to determine whether or not dust is deposited to a certain extent, and a dust removal process is required.
22. Example 22 provided by the present invention: including the above example 20 or 21, wherein the electric field device performs dust removal processing with increasing electric field voltage.
23. Example 23 provided by the present invention: including the above example 20 or 21, wherein the electric field device performs the dust removing treatment using the electric field back corona discharge phenomenon.
24. Example 24 provided by the present invention: including the above example 20 or 21, wherein the electric field device performs the dust removing process by increasing the electric field voltage and limiting the injection current by utilizing the electric field back corona discharge phenomenon.
25. Example 25 provided by the present invention: including the above example 20 or 21, the electric field device performs the dust cleaning process by using the electric field back corona discharge phenomenon, increasing the electric field voltage, limiting the injection current, and generating plasma by the sharp discharge occurring at the carbon deposition site of the anode, which deeply oxidizes the organic components of the dust, breaks the high molecular bonds, and forms small molecular carbon dioxide and water.
26. Example 26 provided by the invention: including any one of the above examples 2 to 25, wherein the electric field device further comprises an auxiliary electric field unit for generating an auxiliary electric field that is not parallel to the ionizing dust removal electric field.
27. Example 27 provided by the present invention: including any one of the above examples 2 to 25, wherein the electric field device further includes an auxiliary electric field unit, the ionization and dust removal electric field includes a flow channel, and the auxiliary electric field unit is configured to generate an auxiliary electric field that is not perpendicular to the flow channel.
28. Example 28 provided by the invention: including the above-mentioned example 26 or 27, wherein the auxiliary electric field unit includes a first electrode, and the first electrode of the auxiliary electric field unit is disposed at or near an inlet of the ionization and dust removal electric field.
29. Example 29 provided by the present invention: including example 28 above, wherein the first electrode is a cathode.
30. Example 30 provided by the present invention: including the above example 28 or 29, wherein the first electrode of the auxiliary electric field unit is an extension of the dedusting electric field cathode.
31. Example 31 provided by the present invention: the above example 30 is included, wherein the first electrode of the auxiliary electric field unit has an angle α with the dust-removing electric field anode, and 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.
32. Example 32 provided by the invention: including any of the above examples 26-31, wherein the auxiliary electric field unit includes a second electrode, the second electrode of the auxiliary electric field unit being disposed at or near an outlet of the ionizing dust removal electric field.
33. Example 33 provided by the present invention: including example 32 above, wherein the second electrode is an anode.
34. Example 34 provided by the invention: including the above example 32 or 33, wherein the second electrode of the auxiliary electric field unit is an extension of the dedusting electric field anode.
35. Example 35 provided by the invention: including the above-mentioned example 34, wherein the second electrode of the auxiliary electric field unit has an angle α with the dedusting electric field cathode, and 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.
36. Example 36 provided by the invention: including any of examples 26-29, 32, and 33 above, wherein the electrodes of the auxiliary electric field are disposed independently of the electrodes of the ionizing dust removal electric field.
37. Example 37 provided by the present invention: any one of the above examples 2 to 36 is included, wherein a ratio of a dust deposition area of the dust removal electric field anode to a discharge area of the dust removal electric field cathode is 1.667: 1-1680: 1.
38. example 38 provided by the invention: any one of the above examples 2 to 36 is included, wherein a ratio of a dust deposition area of the dust removal electric field anode to a discharge area of the dust removal electric field cathode is 6.67: 1-56.67: 1.
39. example 39 provided by the invention: any one of the above examples 2 to 38 is included, wherein the diameter of the dedusting electric field cathode is 1-3 mm, and the polar distance between the dedusting electric field anode and the dedusting electric field cathode is 2.5-139.9 mm; the ratio of the dust deposition area of the anode of the dust removal electric field to the discharge area of the cathode of the dust removal electric field is 1.667: 1-1680: 1.
40. example 40 provided by the present invention: including any of examples 2-38 above, wherein a pole pitch of the dedusting electric field anode and the dedusting electric field cathode is less than 150 mm.
41. Example 41 provided by the present invention: including any one of examples 2-38 above, wherein the inter-polar distance between the dedusting electric field anode and the dedusting electric field cathode is 2.5-139.9 mm.
42. Example 42 provided by the present invention: including any one of examples 2-38 above, wherein the inter-polar distance between the dedusting electric field anode and the dedusting electric field cathode is 5-100 mm.
43. Example 43 provided by the invention: including any one of the above examples 2 to 42, wherein the dedusting electric field anode has a length of 10 to 180 mm.
44. Example 44 provided by the invention: the device comprises any one of the above examples 2 to 42, wherein the anode length of the dedusting electric field is 60-180 mm.
45. Example 45 provided by the invention: including any one of the above examples 2 to 44, wherein the dedusting electric field cathode length is 30-180 mm.
46. Example 46 provided by the invention: including any one of the above examples 2 to 44, wherein the dedusting electric field cathode length is 54-176 mm.
47. Example 47 provided by the invention: including any of examples 26-46 above, wherein, when operating, the ionizing dust removal electric field has a number of couplings ≦ 3.
48. Example 48 provided by the invention: including any of the above examples 2-46, wherein a ratio of a dust deposition area of the dust-removal electric field anode to a discharge area of the dust-removal electric field cathode, a polar distance between the dust-removal electric field anode and the dust-removal electric field cathode, a length of the dust-removal electric field anode, and a length of the dust-removal electric field cathode are such that a number of coupling times of the ionizing dust-removal electric field is less than or equal to 3.
49. Example 49 provided by the invention: the ionization and dust removal device comprises any one of the above examples 2 to 48, wherein the ionization and dust removal electric field voltage ranges from 1kv to 50 kv.
50. Example 50 provided by the invention: including any of the above examples 2 to 49, wherein the electric field device further comprises a number of connection housings through which the series electric field stages are connected.
51. Example 51 provided by the present invention: including example 50 above, wherein the distance of adjacent electric field levels is greater than 1.4 times the pole pitch.
52. Example 52 provided by the invention: including any of the above examples 2-51, wherein the electric field device further comprises a pre-electrode between the electric field device inlet and an ionizing dedusting electric field formed by the dedusting electric field anode and the dedusting electric field cathode.
53. Example 53 provided by the present invention: including the above example 52, wherein the pre-electrode is in the form of a dot, a wire, a mesh, a perforated plate, a needle, a ball cage, a box, a tube, a natural form of matter, or a processed form of matter.
54. Example 54 provided by the invention: including the above-mentioned example 52 or 53, wherein the front electrode is provided with a through hole.
55. Example 55 provided by the invention: including example 54 above, wherein the through-holes are polygonal, circular, elliptical, square, rectangular, trapezoidal, or diamond shaped.
56. Example 56 provided by the invention: including the above examples 54 or 55, wherein the size of the through-hole is 0.1 to 3 mm.
57. Example 57 provided by the invention: including any of examples 52-56 above, wherein the pre-electrode is a combination of one or more of a solid, a liquid, a gas cluster, or a plasma.
58. Example 58 provided by the invention: including any of examples 52-57 above, wherein the pre-electrode is a conductive mixed-state substance, a biological natural mixed conductive substance, or an object artificially processed to form a conductive substance.
59. Example 59 provided by the invention: including any of examples 52-58 above, wherein the pre-electrode is 304 steel or graphite.
60. Example 60 provided by the invention: including any of examples 52-58 above, wherein the pre-electrode is an ionically conductive liquid.
61. Example 61 provided by the invention: including any of examples 52-60 above, wherein, in operation, the pre-electrode charges the contaminants in the air as the contaminated air passes through the pre-electrode before entering the ionizing electric field formed by the electric field cathode, the electric field anode.
62. Example 62 provided by the invention: including example 61 above, wherein, when air with contaminants enters the ionizing electric field, the dedusting electric field anode applies an attractive force to the charged contaminants, causing the contaminants to move toward the dedusting electric field anode until the contaminants attach to the dedusting electric field anode.
63. Example 63 provided by the invention: including examples 61 or 62 above, wherein the pre-electrode introduces electrons into the contaminants, the electrons passing between the contaminants between the pre-electrode and the dedusting electric field anode, charging more contaminants.
64. Example 64 provided by the invention: including any of examples 61-63 above, wherein the pre-electrode and the dedusting electric field anode conduct electrons through contaminants and form an electric current.
65. Example 65 provided by the invention: including any of examples 61-64 above, wherein the pre-electrode charges the contaminant by contact with the contaminant.
66. Example 66 provided by the invention: including any of examples 61-65 above, wherein the pre-electrode charges the contaminant by way of energy fluctuations.
67. Example 67 provided by the invention: including any of examples 61-66 above, wherein the pre-electrode is provided with a through-hole.
68. Example 68 provided by the invention: including any one of the above examples 52 to 67, wherein the pre-electrode is linear and the dust removal electric field anode is planar.
69. Example 69 provided by the present invention: including any of examples 52-68 above, wherein the pre-electrode is perpendicular to the de-dusting electric field anode.
70. Example 70 provided by the invention: including any of examples 52-69 above, wherein the pre-electrode is parallel to the dedusting electric field anode.
71. Example 71 provided by the invention: any of the above examples 51 to 69 is included, wherein the pre-electrode is curved or arcuate.
72. Example 72 provided by the invention: including any of examples 52-71 above, wherein the pre-electrode employs a wire mesh.
73. Example 73 provided by the invention: including any of examples 52-72 above, wherein a voltage between the pre-electrode and the dedusting electric field anode is different from a voltage between the dedusting electric field cathode and the dedusting electric field anode.
74. Example 74 provided by the invention: including any of examples 52-73 above, wherein a voltage between the pre-electrode and the dedusting electric field anode is less than an initial corona onset voltage.
75. Example 75 provided by the invention: including any of examples 52-74 above, wherein a voltage between the pre-electrode and the dedusting electric field anode is 0.1kv-2 kv/mm.
76. Example 76 provided by the invention: including any of the above examples 52-75, wherein the electric field device comprises a flow channel in which the pre-electrode is located; the ratio of the cross-sectional area of the front electrode to the cross-sectional area of the flow channel is 99% -10%, or 90-10%, or 80-20%, or 70-30%, or 60-40%, or 50%.
77. Example 77 provided by the invention: including any of examples 2-76 above, wherein the electric field device comprises an electret element.
78. Example 78 provided by the invention: example 77 above is included, wherein the electret element is in the ionizing dedusting electric field when the dedusting electric field anode and the dedusting electric field cathode are powered on.
79. Example 79 provided by the invention: including the above examples 77 or 78, wherein the electret element is proximate to or at the field device outlet.
80. Example 80 provided by the invention: including any of examples 78-79 above, wherein the dedusting electric field anode and the dedusting electric field cathode form a flow channel in which the electret element is disposed.
81. Example 81 provided by the invention: including example 80 above, wherein the flow channel includes a flow channel outlet, the electret element is proximate to the flow channel outlet, or the electret element is disposed at the flow channel outlet.
82. Example 82 provided by the invention: including the above example 80 or 81, wherein the electret element has a cross section in the flow channel of 5% to 100% of the cross section of the flow channel.
83. Example 83 provided by the invention: including example 82 above, wherein the electret element has a cross-section in the flow channel that is 10% -90%, 20% -80%, or 40% -60% of the cross-section of the flow channel.
84. Example 84 provided by the invention: including any of examples 77-83 above, wherein the ionizing dedusting electric field charges the electret element.
85. Example 85 provided by the invention: including any of examples 77-84 above, wherein the electret element has a porous structure.
86. Example 86 provided by the invention: including any of examples 77-85 above, wherein the electret element is a fabric.
87. Example 87 provided by the invention: any one of the above examples 77 to 86 is included, wherein the dedusting electric field anode is tubular inside, the electret element is tubular outside, and the electret element is sleeved inside the dedusting electric field anode.
88. Example 88 provided by the invention: including any one of examples 77-87 above, wherein the electret element is removably connected to the dedusting electric field anode.
89. Example 89 provided by the invention: including any of examples 77-88 above, wherein the material of the electret element comprises an inorganic compound having electret properties.
90. Example 90 provided by the invention: the above example 89 is included, wherein the inorganic compound is selected from one or more of an oxygen-containing compound, a nitrogen-containing compound, or a combination of glass fibers.
91. Example 91 provided by the invention: the above example 90 is included, wherein the oxygen-containing compound is selected from one or more of metal-based oxides, oxygen-containing compounds, and oxygen-containing inorganic heteropolyacid salts.
92. Example 92 provided by the invention: including example 91 above, wherein the metal-based oxide is selected from one or more of aluminum oxide, zinc oxide, zirconium oxide, titanium oxide, barium oxide, tantalum oxide, silicon oxide, lead oxide, and tin oxide.
93. Example 93 provided by the invention: including example 91 above, wherein the metal-based oxide is aluminum oxide.
94. Example 94 provided by the invention: the above example 91 is included, wherein the oxygen-containing compound is selected from one or a combination of more of a zirconium titanium compound oxide and a barium titanium compound oxide.
95. Example 95 provided by the invention: including example 91 above, wherein the oxygen-containing inorganic heteropolyacid salt is selected from one or more combinations of zirconium titanate, lead zirconate titanate, or barium titanate.
96. Example 96 provided by the invention: including example 90 above, wherein the nitrogen-containing compound is silicon nitride.
97. Example 97 provided by the invention: including any of the above examples 77-96, wherein the material of the electret element comprises an organic compound having electret properties.
98. Example 98 provided by the invention: the above example 97 is included, wherein the organic compound is selected from one or more of fluoropolymer, polycarbonate, PP, PE, PVC, natural wax, resin, rosin.
99. Example 99 provided by the invention: the above example 98 is included, wherein the fluoropolymer is selected from one or more of polytetrafluoroethylene, polyperfluoroethylpropylene, soluble polytetrafluoroethylene, and polyvinylidene fluoride.
100. Example 100 provided by the invention: including example 98 above, wherein the fluoropolymer is polytetrafluoroethylene.
101. Example 101 provided by the invention: any one of the above examples 1 to 100 is included, wherein a wind equalizing device is further included.
102. Example 102 provided by the invention: including example 101 above, where the wind-equalizing device is between the dust removal system inlet and the ionized dust-removal electric field formed by the dust-removal electric field anode and the dust-removal electric field cathode, and when the dust-removal electric field anode is a cube, the wind-equalizing device includes: the air inlet pipe is arranged on one side of the anode of the dedusting electric field, and the air outlet pipe is arranged on the other side; wherein the air inlet pipe is opposite to the air outlet pipe.
103. Example 103 provided by the invention: including example 101 above, where the wind-equalizing device is between the dust removal system inlet and the ionization dust-removal electric field formed by the dust-removal electric field anode and the dust-removal electric field cathode, and when the dust-removal electric field anode is a cylinder, the wind-equalizing device is composed of a plurality of rotatable wind-equalizing blades.
104. Example 104 provided by the invention: the dust removal electric field anode structure comprises the example 101, wherein the first venturi plate air equalizing mechanism of the air equalizing device and the second venturi plate air equalizing mechanism arranged at the air outlet end of the dust removal electric field anode are provided with air inlet holes, the second venturi plate air equalizing mechanism is provided with air outlet holes, the air inlet holes and the air outlet holes are arranged in a staggered mode, air is exhausted from the air inlet side face of the front face, and a cyclone structure is formed.
105. Example 105 provided by the invention: including any one of examples 1-104 above, further comprising an ozone removal device for removing or reducing ozone generated by the electric field device, the ozone removal device being between the electric field device outlet and the dust removal system outlet.
106. Example 106 provided by the invention: including example 105 above, wherein the ozone removal device further comprises an ozone digester.
107. Example 107 provided by the invention: example 106 above is included, wherein the ozone digester is selected from at least one of an ultraviolet ozone digester and a catalytic ozone digester.
108. Example 108 provided by the invention: including any of examples 1-107 above, further comprising a centrifugal separation mechanism.
109. Example 109 provided by the invention: including example 108 above, wherein the centrifugal separation mechanism includes an airflow diversion channel, and the airflow diversion channel is capable of changing a flow direction of the airflow.
110. Example 110 provided by the invention: including example 109 above, wherein the airflow diversion channel is capable of directing air to flow in a circumferential direction.
111. Example 111 provided by the invention: including examples 108 or 109 above, where the gas flow turning channel is helical or conical.
112. Example 112 provided by the invention: including any of examples 108-111 above, wherein the centrifugal separation mechanism comprises a separation cartridge.
113. Example 113 provided by the invention: including the above example 112, wherein the airflow diversion channel is arranged in the separation cylinder, and the bottom of the separation cylinder is provided with the dust outlet.
114. Example 114 provided by the invention: including the above example 112 or 113, wherein the sidewall of the separation cylinder is provided with an air inlet communicated with the first end of the air flow diversion channel.
115. Example 115 provided by the invention: including any of the above examples 112-114, wherein a top of the separation barrel is provided with an air outlet in communication with the second end of the flow diverting channel.
116. Example 116 provided by the invention: an air electric field dust removal method comprises the following steps:
passing the dust-containing air through an ionization dust-removing electric field generated by a dust-removing electric field anode and a dust-removing electric field cathode;
and when the ionization dust removal electric field accumulates dust, dust removal treatment is carried out.
117. Example 117 provided by the invention: the air electric field dust removing method including example 116, wherein the dust removing treatment is performed using an electric field back corona discharge phenomenon.
118. Example 118 provided by the invention: the air electric field dust removing method comprising example 116, wherein the dust removing treatment is performed by increasing the voltage and limiting the injection current by utilizing the electric field back corona discharge phenomenon.
119. Example 119 provided by the invention: the air electric field dust removing method including example 116, wherein the dust removing process is completed by using an electric field anti-corona discharge phenomenon, increasing a voltage, limiting an injection current, causing a sharp discharge occurring at an anode dust deposition position to generate plasma, which deeply oxidizes organic components of dust, breaks a high molecular bond, forms a small molecular carbon dioxide and water.
120. Example 120 provided by the invention: the air electric field dedusting method of any of examples 116-119, wherein the dedusting electric field cathode comprises at least one electrode bar.
121. Example 121 provided by the invention: the air electric field dust collecting method of example 120, wherein the electrode rod has a diameter of not more than 3 mm.
122. Example 122 provided by the invention: the air electric field dust removing method including example 120 or 121, wherein the electrode rod has a shape of a needle, a polygon, a burr, a screw rod, or a column.
123. Example 123 provided by the invention: the air electric field dedusting method of any of examples 116-122, wherein the dedusting electric field anode is comprised of a hollow tube bundle.
124. Example 124 provided by the invention: the air electric field dedusting method of example 123, wherein the hollow cross-section of the anode tube bundle is circular or polygonal.
125. Example 125 provided by the invention: the air electric field dust removing method comprising example 124, wherein the polygon is a hexagon.
126. Example 126 provided by the invention: the air electric field dedusting method of any of examples 123-125, wherein the tube bundle of the dedusting electric field anode is honeycomb shaped.
127. Example 127 provided by the invention: the air electric field dedusting method of any of examples 116-126, wherein the dedusting electric field cathode is penetrated within the dedusting electric field anode.
128. Example 128 provided by the invention: the air electric field dust removing method including any one of examples 116 to 127, wherein the dust removing process is performed when the detected electric field current is increased to a given value.
129. Example 129 provided by the invention: a method of oxygenating air comprising the steps of:
passing air through a flow passage;
an electric field is generated in the flow channel, the electric field being non-perpendicular to the flow channel, the electric field including an inlet and an outlet.
130. Example 130 provided by the invention: a method of oxygenating air including example 129 wherein the electric field includes a first anode and a first cathode, the first anode and first cathode forming the flow channel, the flow channel connecting the inlet and the outlet.
131. Example 131 provided by the invention: a method of oxygenating air including any one of examples 129 to 130 wherein the first anode and first cathode ionize oxygen in the air.
132. Example 132 provided by the invention: a method of oxygenating air including any one of examples 129 to 131 wherein the electric field includes a second electrode disposed at or near the inlet.
133. Example 133 provided by the invention: a method of oxygenating air including example 132 wherein the second electrode is a cathode.
134. Example 134 provided by the invention: a method of oxygenating air including any one of examples 132 or 133 wherein the second electrode is an extension of the first cathode.
135. Example 135 provided by the invention: a method of oxygenating air including in example 134 wherein the second electrode is at an angle α with the first anode and 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.
136. Example 136 provided by the invention: a method of oxygenating air including any one of examples 129 to 135 wherein the electric field includes a third electrode disposed at or near the outlet.
137. Example 137 provided by the invention: the method of oxygenating air comprising example 136 wherein the third electrode is an anode.
138. Example 138 provided by the invention: a method of oxygenating air including examples 136 or 137 wherein the third electrode is an extension of the first anode.
139. Example 139 provided by the invention: a method of oxygenating air including example 138 wherein the third electrode is at an angle α with the first cathode and 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.
140. Example 140 provided by the invention: a method of oxygenating air including any one of examples 134 through 139 wherein the third electrode is disposed independently of the first anode and the first cathode.
141. Example 141 provided by the invention: a method of oxygenating air including any one of examples 132 through 140 wherein the second electrode is disposed independently of the first anode and the first cathode.
142. Example 142 provided by the invention: a method of oxygenating air including any one of examples 130 through 141 wherein the first cathode includes at least one electrode rod.
143. Example 143 provided by the invention: the method of oxygenating air comprising any one of examples 130 through 142 wherein the first anode is comprised of a hollow tube bundle.
144. Example 144 provided by the invention: the method of oxygenating air comprising example 143 wherein the hollow cross-section of the anode tube bundle is circular or polygonal.
145. Example 145 provided by the invention: the method of oxygenating air comprising example 144, wherein the polygon is a hexagon.
146. Example 146 provided by the invention: a method of oxygenating air including any one of examples 143-145, wherein the tube bundle of the first anodes is honeycomb shaped.
147. Example 147 provided by the invention: a method of oxygenating air including any one of examples 130 through 146 wherein the first cathode is perforated within the first anode.
148. Example 148 provided by the invention: a method of oxygenating air including any one of examples 130 through 147 wherein the electric field acts on oxygen ions in the flow channel to increase oxygen ion flow and increase the outlet air oxygen content.
149. Example 149 provided by the invention: a method of reducing dust removal electric field coupling, comprising the steps of:
and selecting the anode parameter of the dust removing electric field or/and the cathode parameter of the dust removing electric field to reduce the coupling times of the electric field.
150. Example 150 provided by the invention: a method of reducing coupling of a dedusting electric field comprising example 149, wherein selecting a ratio of a dust collection area of an anode of the dedusting electric field to a discharge area of a cathode of the dedusting electric field.
151. Example 151 provided by the invention: the method of reducing coupling of a dust-removal electric field comprising example 150, wherein the method comprises selecting a ratio of a dust area of an anode of the dust-removal electric field to a discharge area of a cathode of the dust-removal electric field to be 1.667: 1-1680: 1.
152. example 152 provided by the invention: the method of reducing coupling of a dedusting electric field comprising example 150, wherein selecting a ratio of a dust area of an anode of the dedusting electric field to a discharge area of a cathode of the dedusting electric field to be 6.67: 1-56.67: 1.
153. example 153 provided by the invention: a method for reducing coupling of a dedusting electric field comprising any one of examples 149 through 152, wherein the method comprises selecting a diameter of the dedusting electric field cathode to be 1-3 mm, and a pole separation distance between the dedusting electric field anode and the dedusting electric field cathode to be 2.5-139.9 mm; the ratio of the dust deposition area of the anode of the dust removal electric field to the discharge area of the cathode of the dust removal electric field is 1.667: 1-1680: 1.
154. example 154 provided by the invention: the method of reducing coupling of a dedusting electric field of any one of examples 149 through 153, comprising selecting a pole separation of the dedusting electric field anode and the dedusting electric field cathode to be less than 150 mm.
155. Example 155 provided by the invention: the method of reducing coupling of a dedusting electric field of any one of examples 149-153 where comprising selecting a pole separation distance of the dedusting electric field anode and the dedusting electric field cathode to be between 2.5mm and 139.9 mm.
156. Example 156 provided by the invention: the method of reducing coupling of a dedusting electric field of any one of examples 149-153 where comprising selecting a pole separation distance of the dedusting electric field anode and the dedusting electric field cathode to be 5-100 mm.
157. Example 157 provided by the invention: the method of reducing coupling of a dedusting electric field of any one of examples 149 through 156, comprising selecting the dedusting electric field anode to have a length of 10-180 mm.
158. Example 158 provided by the invention: the method of reducing coupling of a dedusting electric field of any one of examples 149 through 156, comprising selecting the dedusting electric field anode to have a length of 60-180 mm.
159. Example 159 provided by the invention: the method of reducing coupling of a dedusting electric field of any one of examples 149 through 158, comprising selecting the dedusting electric field cathode to have a length of 30-180 mm.
160. Example 160 provided by the invention: the method of reducing coupling of a dedusting electric field of any one of examples 149 through 158, wherein the method comprises selecting the dedusting electric field cathode to have a length of 54mm to 176 mm.
161. Example 161 provided by the invention: a method of reducing coupling of a dedusting electric field comprising any one of examples 149 through 160, wherein selecting the dedusting electric field cathode to comprise at least one electrode rod.
162. Example 162 provided by the invention: the method of reducing electric field coupling for dust removal of example 161 comprising selecting the electrode rod to have a diameter of no greater than 3 mm.
163. Example 163 provided by the invention: the method of reducing coupling of a dust-removing electric field of example 161 or 162, comprising selecting the shape of the electrode rod to be needle-like, polygonal, burr-like, threaded rod-like, or columnar.
164. Example 164 provided by the invention: the method of reducing coupling of a dedusting electric field comprising any one of examples 149 through 163, wherein comprising selecting the dedusting electric field anode to consist of a hollow tube bundle.
165. Example 165 provided by the invention: the method of reducing electric field coupling for dust removal of example 164, comprising selecting a cross-section of a hollow of the anode tube bundle to be circular or polygonal.
166. Example 166 provided by the invention: the method of reducing electric field coupling for dust removal of example 165, comprising selecting the polygon to be a hexagon.
167. Example 167 provided by the invention: the method of reducing coupling of a dedusting electric field of any one of examples 164 to 166, including selecting the tube bundle of dedusting electric field anodes to be honeycomb.
168. Example 168 provided by the invention: a method of reducing coupling of a dedusting electric field comprising any one of examples 149 through 167, wherein comprising selecting the dedusting electric field cathode to be perforated within the dedusting electric field anode.
169. Example 169 provided by the invention: the method of reducing coupling of a dedusting electric field of any one of examples 149 through 168, wherein the dedusting electric field anode and/or the dedusting electric field cathode are selected to have a size such that the number of electric field couplings is ≦ 3.
170. Example 170 provided by the invention: an air dust removal method comprises the following steps:
1) adsorbing the particles in the air by using an ionization dust removal electric field;
2) the electret element is charged using an ionizing dusting electric field.
171. Example 171 provided by the invention: the method of air dusting comprising example 170, wherein the electret element is proximate to, or disposed at, the electric field device outlet.
172. Example 172 provided by the invention: the air dedusting method of example 170, wherein the dedusting electric field anode and the dedusting electric field cathode form an air flow channel, and the electret element is disposed in the air flow channel.
173. Example 173 provided by the invention: the air dusting method of example 172, wherein the air flow passage comprises an air flow passage outlet, the electret element being proximate to the air flow passage outlet, or the electret element being disposed at the air flow passage outlet.
174. Example 174 provided by the invention: an air dedusting method including any of examples 170-173, wherein the charged electret element adsorbs particulate matter in the air when the ionizing dedusting electric field is without an applied electric drive voltage.
175. Example 175 provided by the invention: the air dusting method of example 174 is included, wherein after a charged electret element adsorbs certain airborne particles, it is replaced with a new electret element.
176. Example 176 provided by the invention: the air dusting method of example 175, comprising restarting the ionizing dusting electric field to adsorb particulate matter in the air after replacing with the new electret element and charging the new electret element.
177. Example 177 provided by the invention: the air dusting method of any of examples 170 to 176, wherein the material of the electret element comprises an inorganic compound having electret properties.
178. Example 178 provided by the invention: the air dusting method comprising example 177, wherein the inorganic compound is selected from one or more combinations of oxygen-containing compounds, nitrogen-containing compounds, or glass fibers.
179. Example 179 provided by the invention: the air dusting method of example 178, wherein the oxygen-containing compound is selected from one or more combinations of metal-based oxides, oxygen-containing composites, and oxygen-containing inorganic heteropolyacid salts.
180. Example 180 provided by the invention: the air dusting method of example 179 is included, wherein the metal-based oxide is selected from one or more combinations of alumina, zinc oxide, zirconia, titania, barium oxide, tantalum oxide, silica, lead oxide, and tin oxide.
181. Example 181 provided by the invention: the air dusting method of example 179 is included, wherein the metal-based oxide is alumina.
182. Example 182 provided by the invention: the air dusting method of example 179 is included, wherein the oxygen-containing compound is selected from one or more combinations of titanium zirconium compound oxide or titanium barium compound oxide.
183. Example 183 provided by the invention: the air dusting method of example 179, wherein the oxygen containing inorganic heteropolyacid salt is selected from one or more combinations of zirconium titanate, lead zirconate titanate, or barium titanate.
184. Example 184 provided by the invention: the method of air dusting, including example 178, wherein the nitrogen containing compound is silicon nitride.
185. Example 185 provided by the invention: the air dusting method of any of examples 170 to 176, wherein the material of the electret element comprises an organic compound having electret properties.
186. Example 186 provided by the invention: the air dedusting method of example 185 is included, wherein the organic compound is selected from one or more of fluoropolymer, polycarbonate, PP, PE, PVC, natural wax, resin, and rosin in combination.
187. Example 187 provided by the invention: the air dusting method of example 186 is included, wherein the fluoropolymer is selected from one or more combinations of polytetrafluoroethylene, polyperfluoroethylpropylene, soluble polytetrafluoroethylene, and polyvinylidene fluoride.
188. Example 188 provided by the invention: the method of air dusting, comprising example 186, wherein the fluoropolymer is polytetrafluoroethylene.
189. Example 189 provided by the invention: an air dust removal method is characterized by comprising the following steps: and the air is subjected to ionization dust removal to remove or reduce ozone generated by the ionization dust removal.
190. Example 190 provided by the invention: the air dedusting method of example 189 is included, wherein ozone digestion is performed on ozone generated by the ionized dedusting.
191. Example 191 provided by the invention: the air dusting method of example 189, wherein the ozone digestion is selected from at least one of ultraviolet digestion and catalytic digestion.
In this application, "air" has a broad definition and includes all gases.
Drawings
Fig. 1 is a schematic structural diagram of an electric field device in an embodiment of an air dust removal system according to the present invention.
Fig. 2 is a structural view of another embodiment of the first water filtering mechanism arranged in the electric field device in the air dust removing system based on the invention.
Fig. 3A is a structural diagram of an embodiment of an air equalizing device of an electric field device in an air dust removing system according to the present invention.
Fig. 3B is a structural diagram of another embodiment of the air equalizing device of the electric field device in the air dust removing system of the present invention.
Fig. 3C is a structural diagram of another embodiment of the air equalizing device of the electric field device in the air dust removing system according to the present invention.
Fig. 3D is a top view structural diagram of the second venturi plate air equalizing mechanism in the electric field device of the air dust removing system of the present invention.
Fig. 4 is a schematic view of an electric field device according to embodiment 2 of the present invention.
Fig. 5 is a schematic view of an electric field device according to embodiment 3 of the present invention.
FIG. 6 is a top view of the electric field device of FIG. 1 in accordance with the present invention.
FIG. 7 is a schematic diagram of the cross-section of the electret element in the flow channel of example 3.
FIG. 8 is a schematic view of an air dedusting system according to embodiment 4 of the present invention.
FIG. 9 is a schematic diagram of an electric field generating unit according to the present invention.
Fig. 10 is a view a-a of the electric field generating unit of fig. 9.
FIG. 11 is a view A-A of the electric field generating unit of FIG. 9, taken along the lines of length and angle.
FIG. 12 is a schematic diagram of an electric field device configuration for two electric field levels.
Fig. 13 is a schematic structural view of an electric field device in embodiment 17 of the present invention.
Fig. 14 is a schematic structural view of an electric field device in embodiment 19 of the present invention.
Fig. 15 is a schematic structural view of an electric field device in embodiment 20 of the present invention.
Fig. 16 is a schematic structural view of an electric field device in embodiment 22 of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
In an embodiment of the present invention, the present invention provides an air dust removing system, which includes a dust removing system inlet, a dust removing system outlet, and an electric field device.
In one embodiment of the present invention, the air dust removing system includes a centrifugal separation mechanism. In one embodiment of the present invention, the centrifugal separation mechanism includes an airflow diversion channel that can change the flow direction of the airflow. When the gas containing the particulate matters flows through the gas flow diversion channel, the flowing direction of the gas is changed; and the particulate matters in the gas and the like continue to move along the original direction under the action of inertia until colliding with the side wall of the airflow steering channel, namely the inner wall of the centrifugal separation mechanism, cannot continue to move along the original direction, and fall downwards under the action of gravity, so that the particulate matters are separated from the gas.
In one embodiment of the present invention, the gas flow turning channel can guide the gas to flow along the circumferential direction. In one embodiment of the present invention, the air flow diverting passage may be spiral or conical. In one embodiment of the present invention, the centrifugal separation mechanism includes a separation barrel. The separation cylinder is provided with the airflow steering channel, and the bottom of the separation cylinder can be provided with a dust outlet. The side wall of the separating cylinder can be provided with an air inlet communicated with the first end of the airflow diversion channel. The top of the separating cylinder can be provided with an air outlet communicated with the second end of the airflow steering channel. The air outlet is also called an exhaust port, and the size of the exhaust port can be set according to the size of the required air inflow. After gas flows into the gas flow steering channel of the separation barrel from the gas inlet, the gas changes from linear motion to circular motion, and the particles in the gas continue to move along the linear direction under the action of inertia until the particles collide with the inner wall of the separation barrel, the particles cannot continue to flow along with the gas, and the particles sink under the action of gravity, so that the particles are separated from the gas, and finally the particles are discharged from the dust outlet at the bottom, and the gas is finally discharged from the gas outlet at the top. In an embodiment of the present invention, the inlet of the electric field device is communicated with the exhaust port of the centrifugal separation mechanism. The gas outlet of the separating cylinder is positioned at the joint of the separating cylinder and the electric field device.
In an embodiment of the present invention, the centrifugal separation mechanism may have a bending structure. The centrifugal separation mechanism can be in one shape or a combination of shapes of a ring shape, a Chinese character hui shape, a cross shape, a T shape, an L shape, a concave shape or a folded shape. The air flow diverting passage of the centrifugal separation mechanism has at least one turn. When the gas flows through the turning, the flowing direction of the gas is changed, the particles in the gas continuously move along the original direction under the action of inertia until the particles collide with the inner wall of the centrifugal separation mechanism, the particles sink under the action of gravity after collision, the particles are separated from the gas and are finally discharged from the powder outlet at the lower end, and the gas finally flows out from the gas outlet.
In an embodiment of the present invention, a first filter layer may be disposed at the air outlet of the centrifugal separation mechanism, and the first filter layer may include a metal mesh sheet, and the metal mesh sheet may be disposed perpendicular to the air flow direction. The metal mesh will filter the gas exiting the gas outlet to filter out the particles that have not yet been separated from the gas.
In an embodiment of the present invention, the air dust removing system may include an air equalizing device. The air equalizing device is arranged in front of the electric field device, and can enable air flow entering the electric field device to uniformly pass through.
In an embodiment of the present invention, the dust removing electric field anode of the electric field device may be a cube, the air equalizing device may include an air inlet pipe located at one side of the cathode supporting plate and an air outlet pipe located at the other side of the cathode supporting plate, and the cathode supporting plate is located at the air inlet end of the dust removing electric field anode; wherein, the side of installation intake pipe is relative with the side of installation outlet duct. The air equalizing device can make the air flow entering the electric field device uniformly pass through the electrostatic field.
In an embodiment of the present invention, the anode of the dust removing electric field may be a cylinder, the air-equalizing device is located between the inlet of the dust removing system and the ionization dust removing electric field formed by the anode of the dust removing electric field and the cathode of the dust removing electric field, and the air-equalizing device includes a plurality of air-equalizing blades rotating around the center of the inlet of the dust removing system. The air equalizing device can enable various changed air input to uniformly pass through an electric field generated by the anode of the dust removal electric field, and meanwhile, the temperature inside the anode of the dust removal electric field can be kept constant, and oxygen is sufficient. The air equalizing device can make the air flow entering the electric field device uniformly pass through the electrostatic field.
In an embodiment of the invention, the air equalizing device comprises an air inlet plate arranged at the air inlet end of the anode of the dedusting electric field and an air outlet plate arranged at the air outlet end of the anode of the dedusting electric field, wherein the air inlet plate is provided with an air inlet hole, the air outlet plate is provided with air outlet holes, the air inlet hole and the air outlet holes are arranged in a staggered manner, and air is introduced from the front side and exhausted from the side surface to form a cyclone structure. The air equalizing device can make the air flow entering the electric field device uniformly pass through the electrostatic field.
In one embodiment of the present invention, the air dust removing system may include a dust removing system inlet, a dust removing system outlet, and an electric field device. The electric field device is also referred to as an electric field device. In one embodiment of the present invention, the electric field device may include an inlet of the electric field device, an outlet of the electric field device, and a pre-electrode disposed between the inlet of the electric field device and the outlet of the electric field device, wherein the particles in the gas are charged when the gas flows through the pre-electrode from the inlet of the electric field device.
In one embodiment of the present invention, the electric field device includes a pre-electrode between the inlet of the electric field device and the ionizing dust-removal electric field formed by the anode of the dust-removal electric field and the cathode of the dust-removal electric field. When gas flows through the pre-electrode from the inlet of the electric field device, particles and the like in the gas are charged.
In an embodiment of the present invention, the shape of the front electrode may be a point, a line, a net, a perforated plate, a needle bar, a ball cage, a box, a tube, a natural form of a substance, or a processed form of a substance. When the front electrode is in a porous structure, one or more air inlet through holes are formed in the front electrode. In an embodiment of the present invention, the shape of the air inlet hole may be polygonal, circular, elliptical, square, rectangular, trapezoidal, or rhombic. In an embodiment of the present invention, the air inlet hole has a profile size of 0.1-3 mm, 0.1-0.2 mm, 0.2-0.5 mm, 0.5-1 mm, 1-1.2 mm, 1.2-1.5 mm, 1.5-2 mm, 2-2.5 mm, 2.5-2.8 mm, or 2.8-3 mm.
In an embodiment of the present invention, the form of the front electrode may be one or a combination of solid, liquid, gas molecular group, plasma, conductive mixed-state substance, natural mixed conductive substance of organism, or artificial processing of object to form conductive substance. When the front electrode is solid, a solid metal, such as 304 steel, or other solid conductor, such as graphite, may be used. When the front electrode is a liquid, it can be an ion-containing conductive liquid.
When the device works, the preposed electrode charges the pollutants in the gas before the gas with the pollutants enters the ionization dust removal electric field formed by the dust removal electric field anode and the dust removal electric field cathode and the gas with the pollutants passes through the preposed electrode. When the gas with the pollutants enters the ionization dust removal electric field, the anode of the dust removal electric field exerts attraction force on the charged pollutants, so that the pollutants move towards the anode of the dust removal electric field until the pollutants are attached to the anode of the dust removal electric field.
In one embodiment of the invention, the pre-electrode guides electrons into the pollutants, and the electrons are transferred between the pollutants positioned between the pre-electrode and the anode of the dust removal electric field, so that more pollutants are charged. Electrons are conducted between the front electrode and the dedusting electric field anode through pollutants, and current is formed.
In one embodiment of the present invention, the pre-electrode charges the contaminants by contacting the contaminants. In an embodiment of the present invention, the pre-electrode charges the contaminants by means of energy fluctuation. In one embodiment of the present invention, the pre-electrode transfers electrons to the contaminants by contacting the contaminants and electrically charges the contaminants. In one embodiment of the present invention, the pre-electrode transfers electrons to the contaminants by means of energy fluctuation, and the contaminants are charged.
In one embodiment of the invention, the pre-electrode is linear, and the dust removal electric field anode is planar. In an embodiment of the present invention, the front electrode is perpendicular to the anode of the dust removing electric field. In one embodiment of the present invention, the pre-electrode is parallel to the anode of the dust-removing electric field. In an embodiment of the present invention, the front electrode is curved or arc-shaped. In an embodiment of the present invention, the front electrode is a wire mesh. In an embodiment of the invention, the voltage between the pre-electrode and the anode of the dust removing electric field is different from the voltage between the cathode of the dust removing electric field and the anode of the dust removing electric field. In an embodiment of the present invention, the voltage between the pre-electrode and the anode of the dust removing electric field is smaller than the initial corona start voltage. The initial corona onset voltage is the minimum of the voltage between the cathode of the dedusting electric field and the anode of the dedusting electric field. In one embodiment of the present invention, the voltage between the pre-electrode and the anode of the dedusting electric field may be 0.1-2 kv/mm.
In an embodiment of the present invention, the electric field device includes a flow channel, and the pre-electrode is located in the flow channel. In an embodiment of the invention, a ratio of a cross-sectional area of the front electrode to a cross-sectional area of the flow channel is 99% -10%, or 90-10%, or 80-20%, or 70-30%, or 60-40%, or 50%. The cross-sectional area of the pre-electrode is the sum of the areas of the pre-electrode along the solid part of the cross-section. In one embodiment of the present invention, the pre-electrode is charged with a negative potential.
In one embodiment of the invention, when gas flows into the flow channel through the inlet of the electric field device, pollutants such as metal dust, fog drops or aerosol with strong electrical conductivity in the gas are directly negatively charged when contacting the front electrode or when the distance between the gas and the front electrode reaches a certain range, then all the pollutants enter the ionization dust removal electric field along with the gas flow, the anode of the dust removal electric field exerts attraction force on the negatively charged metal dust, fog drops or aerosol and the like, so that the negatively charged pollutants move to the anode of the dust removal electric field until the part of pollutants are attached to the anode of the dust removal electric field, and the part of pollutants are collected, meanwhile, the ionization dust removal electric field formed between the anode of the dust removal electric field and the cathode of the dust removal electric field obtains oxygen ions through oxygen in the ionized gas, and the negatively charged oxygen ions are combined with common dust to make the common dust negatively charged, the anode of the dust removal electric field applies attraction to the part of pollutants with negative charges, such as dust, so that the pollutants, such as dust, move towards the anode of the dust removal electric field until the part of pollutants are attached to the anode of the dust removal electric field, the part of pollutants, such as common dust, are collected, the pollutants with stronger conductivity and weaker conductivity in the gas are collected, the types of pollutants in the gas can be collected by the anode of the dust removal electric field are wider, the collection capacity is stronger, and the collection efficiency is higher.
In an embodiment of the present invention, the inlet of the electric field device is communicated with the exhaust port of the separating mechanism.
In an embodiment of the present invention, the electric field device may include a dust removing electric field cathode and a dust removing electric field anode, and an ionization dust removing electric field is formed between the dust removing electric field cathode and the dust removing electric field anode. Gas enters an ionization dust removal electric field, oxygen ions in the gas are ionized, a large number of oxygen ions with charges are formed, the oxygen ions are combined with particles such as dust in the gas, the particles are charged, the adsorption force is applied to the particles with the negative charges by the anode of the dust removal electric field, and the particles are adsorbed on the anode of the dust removal electric field to remove the particles in the gas.
In an embodiment of the invention, the dust removal electric field cathode includes a plurality of cathode filaments. The diameter of the cathode filament can be 0.1mm-20mm, and the size parameter is adjusted according to the application occasion and the dust accumulation requirement. In one embodiment of the present invention, the diameter of the cathode filament is not greater than 3 mm. In one embodiment of the invention, the cathode wire is made of metal wire or alloy wire which is easy to discharge, is temperature resistant, can support the self weight and is stable in electrochemistry. In an embodiment of the present invention, the cathode filament is made of titanium. The specific shape of the cathode filament is adjusted according to the shape of the dust removal electric field anode, for example, if the dust deposition surface of the dust removal electric field anode is a plane, the section of the cathode filament is circular; if the dust deposition surface of the dust removal electric field anode is a circular arc surface, the cathode filament needs to be designed into a polyhedral shape. The length of the cathode filament is adjusted according to the anode of the dust removal electric field.
In an embodiment of the present invention, the dust-removing electric field cathode includes a plurality of cathode bars. In an embodiment of the present invention, the diameter of the cathode bar is not greater than 3 mm. In one embodiment of the present invention, the cathode rod is made of a metal rod or an alloy rod which is easily discharged. The shape of the cathode rod may be needle-like, polygonal, burr-like, threaded rod-like, columnar, or the like. The shape of the cathode bar can be adjusted according to the shape of the dust removal electric field anode, for example, if the dust deposition surface of the dust removal electric field anode is a plane, the section of the cathode bar needs to be designed to be circular; if the dust deposition surface of the dust removal electric field anode is a circular arc surface, the cathode bar needs to be designed into a polyhedral shape.
In an embodiment of the present invention, the cathode of the dust-removing electric field is inserted into the anode of the dust-removing electric field.
In an embodiment of the present invention, the dedusting electric field anode includes one or more hollow anode tubes disposed in parallel. When the number of the hollow anode tubes is multiple, all the hollow anode tubes form a honeycomb-shaped dedusting electric field anode. In an embodiment of the present invention, the cross-section of the hollow anode tube may be circular or polygonal. If the cross section of the hollow anode tube is circular, a uniform electric field can be formed between the anode of the dust removal electric field and the cathode of the dust removal electric field, and dust is not easy to accumulate on the inner wall of the hollow anode tube. If the cross section of the hollow anode tube is triangular, 3 dust accumulation surfaces can be formed on the inner wall of the hollow anode tube, 3 far-angle dust containing angles are formed, and the dust containing rate of the hollow anode tube with the structure is highest. If the cross section of the hollow anode tube is quadrilateral, 4 dust accumulation surfaces and 4 dust containing corners can be obtained, but the splicing structure is unstable. If the cross section of the hollow anode tube is hexagonal, 6 dust accumulation surfaces and 6 dust containing angles can be formed, and the dust accumulation surfaces and the dust containing rate are balanced. If the cross section of the hollow anode tube is polygonal, more dust-collecting edges can be obtained, but the dust holding rate is lost. In an embodiment of the present invention, the diameter of the inner circle of the hollow anode tube ranges from 5mm to 400 mm.
In one embodiment of the invention, the cathode of the dedusting electric field is arranged on the cathode supporting plate, and the cathode supporting plate is connected with the anode of the dedusting electric field through the insulating mechanism. The insulating mechanism is used for realizing the insulation between the cathode supporting plate and the dedusting electric field anode. In an embodiment of the present invention, the dedusting electric field anode includes a first anode portion and a second anode portion, i.e., the first anode portion is close to the inlet of the electric field device, and the second anode portion is close to the outlet of the electric field device. The cathode supporting plate and the insulating mechanism are arranged between the first anode part and the second anode part, namely the insulating mechanism is arranged between the ionization electric field or the dust removal electric field cathode, so that the cathode of the dust removal electric field can be well supported, the cathode of the dust removal electric field can be fixed relative to the dust removal electric field anode, and a set distance is kept between the cathode of the dust removal electric field and the dust removal electric field anode. In the prior art, the supporting point of the cathode is at the end point of the cathode, and the distance between the cathode and the anode is difficult to maintain. In an embodiment of the present invention, the insulating mechanism is disposed outside the electric field flow channel, that is, outside the electric field flow channel, so as to prevent or reduce dust and the like in the gas from collecting on the insulating mechanism, which may cause the insulating mechanism to break down or conduct electricity.
In an embodiment of the present invention, the insulating mechanism uses a high voltage resistant ceramic insulator to insulate the cathode of the dust removing electric field and the anode of the dust removing electric field. The dedusting field anode is also referred to as a housing.
In an embodiment of the invention, the first anode portion is located in front of the first cathode support plate and the insulating mechanism in the gas flowing direction, and the first anode portion can remove water in the gas and prevent water from entering the insulating mechanism to cause short circuit and ignition of the insulating mechanism. In addition, the first anode part can remove a considerable part of dust in the gas, and when the gas passes through the insulating mechanism, the considerable part of dust is eliminated, so that the possibility of short circuit of the insulating mechanism caused by the dust is reduced. In an embodiment of the present invention, the insulation mechanism includes an insulation porcelain rod. The design of first anode portion mainly is in order to protect insulating knob insulator not polluted by particulate matter etc. in the gas, in case gas pollution insulating knob insulator will cause dust removal electric field positive pole and dust removal electric field negative pole to switch on to the laying dust function that makes dust removal electric field positive pole is inefficacy, so the design of first anode portion can effectively reduce insulating knob insulator and be polluted, improves the live time of product. In the process that gas flows through the electric field flow channel, the first anode part and the dedusting electric field cathode contact polluted gas firstly, and the insulating mechanism contacts the gas later, so that the purpose of dedusting firstly and then passing through the insulating mechanism is achieved, the pollution to the insulating mechanism is reduced, the cleaning and maintenance period is prolonged, and the corresponding electrode is supported in an insulating way after being used. The length of the first anode portion is sufficiently long to remove a portion of dust, reduce dust accumulation on the insulating mechanism and the cathode support plate, and reduce electrical breakdown caused by dust. In an embodiment of the invention, the length of the first anode portion accounts for 1/10-1/4, 1/4-1/3, 1/3-1/2, 1/2-2/3, 2/3-3/4, or 3/4-9/10 of the total length of the dedusting electric field anode.
In an embodiment of the invention, the second anode portion is located behind the cathode support plate and the insulating mechanism in the gas flow direction. The second anode part comprises a dust deposition section and a reserved dust deposition section. The dust accumulation section adsorbs particles in the gas by utilizing static electricity, and the dust accumulation section is used for increasing the dust accumulation area and prolonging the service time of the electric field device. The reserved dust accumulation section can provide failure protection for the dust accumulation section. The reserved dust accumulation section is used for further improving the dust accumulation area and the dust removal effect on the premise of meeting the design dust removal requirement. And reserving a dust accumulation section for supplementing the dust accumulation of the front section. In an embodiment of the invention, the first anode portion and the second anode portion may use different power sources.
In an embodiment of the present invention, since there is a very high potential difference between the cathode of the dedusting electric field and the anode of the dedusting electric field, in order to prevent the cathode of the dedusting electric field and the anode of the dedusting electric field from being conducted, the insulating mechanism is disposed outside the electric field flow channel between the cathode of the dedusting electric field and the anode of the dedusting electric field. Therefore, the insulating mechanism is suspended outside the anode of the dedusting electric field. In one embodiment of the present invention, the insulating mechanism may be made of non-conductive temperature-resistant materials, such as ceramics, glass, etc. In one embodiment of the invention, the insulation of the completely closed air-free material requires that the insulation isolation thickness is more than 0.3 mm/kv; air insulation requirements >1.4 mm/kv. The insulation distance may be set according to 1.4 times the inter-polar distance between the cathode of the dust-removing electric field and the anode of the dust-removing electric field. In one embodiment of the invention, the insulating mechanism is made of ceramic, and the surface of the insulating mechanism is glazed; the connection can not be filled by using adhesive or organic materials, and the temperature resistance is higher than 350 ℃.
In an embodiment of the present invention, the insulating mechanism includes an insulating portion and a heat insulating portion. In order to make the insulating mechanism have the anti-pollution function, the insulating part is made of a ceramic material or a glass material. In an embodiment of the present invention, the insulating portion may be an umbrella-shaped string of ceramic posts or glass posts, and glaze is hung inside and outside the umbrella. The distance between the outer edge of the umbrella-shaped string ceramic column or the glass column and the anode of the dust removal electric field is more than 1.4 times of the distance of the electric field, namely more than 1.4 times of the inter-polar distance. The sum of the distances between the umbrella protruding edges of the umbrella-shaped string ceramic columns or the glass columns is 1.4 times larger than the insulation distance of the umbrella-shaped string ceramic columns. The total depth of the umbrella edge of the umbrella-shaped string ceramic column or the glass column is 1.4 times larger than the insulation distance of the umbrella-shaped string ceramic column. The insulating part can also be a columnar ceramic column or a glass column, and glaze is hung inside and outside the column. In an embodiment of the invention, the insulating portion may also be in a tower shape.
In an embodiment of the present invention, a heating rod is disposed in the insulating portion, and when the ambient temperature of the insulating portion approaches the dew point, the heating rod is activated to perform heating. Because the inside and outside of the insulating part have temperature difference during use, condensation is easily generated inside and outside the insulating part. The outer surface of the insulation may be heated spontaneously or by gas to generate high temperature, which requires necessary insulation protection and scalding prevention. The heat insulation part comprises a protective enclosure baffle positioned outside the heat insulation part and a denitration purification reaction cavity. In an embodiment of the invention, the tail part of the insulating part needs to be insulated from the condensation position, so that the condensation component is prevented from being heated by the environment and the heat dissipation high temperature.
In one embodiment of the invention, the outgoing line of the power supply of the electric field device is connected in a wall-crossing manner by using the umbrella-shaped string ceramic column or the glass column, the elastic contact head is used for connecting the cathode supporting plate in the wall, the sealed insulation protection wiring cap is used for plugging and pulling out the wall, and the insulation distance between the outgoing line conductor and the wall is greater than that of the umbrella-shaped string ceramic column or the glass column. In one embodiment of the invention, the high-voltage part is provided with no lead and is directly arranged on the end head, so that the safety is ensured, the high-voltage module is wholly insulated and protected by ip68, and heat exchange and heat dissipation are realized by using a medium.
In one embodiment of the invention, an asymmetric structure is adopted between the dedusting electric field cathode and the dedusting electric field anode. In the symmetrical electric field, the polar particles are subjected to an acting force with the same magnitude and opposite directions, and the polar particles reciprocate in the electric field; in an asymmetric electric field, the polar particles are subjected to two acting forces with different magnitudes, and the polar particles move towards the direction with the large acting force, so that the generation of coupling can be avoided.
An ionization dust removal electric field is formed between a dust removal electric field cathode and a dust removal electric field anode of the electric field device. In order to reduce the electric field coupling of the electric field for the ionization and dust removal, in an embodiment of the present invention, the method for reducing the electric field coupling includes the following steps: the ratio of the dust collecting area of the anode of the dedusting electric field to the discharging area of the cathode of the dedusting electric field is selected to ensure that the electric field coupling frequency is less than or equal to 3. In an embodiment of the present invention, a ratio of a dust collecting area of the anode of the dust removing electric field to a discharging area of the cathode of the dust removing electric field may be: 1.667: 1-1680: 1; 3.334: 1-113.34: 1; 6.67: 1-56.67: 1; 13.34: 1-28.33: 1. the embodiment selects the dust collection area of the anode of the dust removal electric field with a relatively large area and the discharge area of the cathode of the dust removal electric field with a relatively small area, and specifically selects the area ratio, so that the discharge area of the cathode of the dust removal electric field can be reduced, the suction force is reduced, the dust collection area of the anode of the dust removal electric field is enlarged, the suction force is enlarged, namely, asymmetric electrode suction force is generated between the cathode of the dust removal electric field and the anode of the dust removal electric field, dust after charging falls into the dust collection surface of the anode of the dust removal electric field, although the polarity is changed, the dust cannot be sucked away by the cathode of the dust removal electric field, the electric field coupling is reduced, and the electric field coupling frequency is less than or equal to 3. That is, when the electric field interpolar distance is less than 150mm, the electric field coupling frequency is less than or equal to 3, the electric field energy consumption is low, the coupling consumption of the electric field to aerosol, water mist, oil mist and loose and smooth particles can be reduced, and the electric field electric energy is saved by 30-50%. The dust collection area refers to the area of the working surface of the anode of the dust removal electric field, for example, if the anode of the dust removal electric field is in a hollow regular hexagon tube shape, the dust collection area is the inner surface area of the hollow regular hexagon tube shape, and the dust collection area is also called as the dust deposition area. The discharge area refers to the area of the working surface of the cathode of the dedusting electric field, for example, if the cathode of the dedusting electric field is rod-shaped, the discharge area is the external surface area of the rod.
In an embodiment of the invention, the length of the dedusting electric field anode can be 10-180 mm, 10-20 mm, 20-30 mm, 60-180 mm, 30-40 mm, 40-50 mm, 50-60 mm, 60-70 mm, 70-80 mm, 80-90 mm, 90-100 mm, 100-110 mm, 110-120 mm, 120-130 mm, 130-140 mm, 140-150 mm, 150-160 mm, 160-170 mm, 170-180 mm, 60mm, 180mm, 10mm or 30 mm. The length of the dust removal electric field anode refers to the minimum length from one end of the dust removal electric field anode working surface to the other end. The anode of the dust removal electric field is selected to have the length, so that the electric field coupling can be effectively reduced.
In an embodiment of the invention, the length of the dust-removing electric field anode can be 10-90 mm, 15-20 mm, 20-25 mm, 25-30 mm, 30-35 mm, 35-40 mm, 40-45 mm, 45-50 mm, 50-55 mm, 55-60 mm, 60-65 mm, 65-70 mm, 70-75 mm, 75-80 mm, 80-85 mm or 85-90 mm, and the design of the length can enable the dust-removing electric field anode and the electric field device to have high temperature resistance and enable the electric field device to have high-efficiency dust collecting capacity under high temperature impact.
In an embodiment of the invention, the length of the cathode of the dust removing electric field may be 30-180 mm, 54-176 mm, 30-40 mm, 40-50 mm, 50-54 mm, 54-60 mm, 60-70 mm, 70-80 mm, 80-90 mm, 90-100 mm, 100-110 mm, 110-120 mm, 120-130 mm, 130-140 mm, 140-150 mm, 150-160 mm, 160-170 mm, 170-176 mm, 170-180 mm, 54mm, 180mm, or 30 mm. The length of the cathode of the dust removing electric field is the minimum length from one end of the working surface of the cathode of the dust removing electric field to the other end. The length of the cathode of the dust removal electric field is selected, so that the electric field coupling can be effectively reduced.
In an embodiment of the invention, the length of the cathode of the dust removing electric field can be 10-90 mm, 15-20 mm, 20-25 mm, 25-30 mm, 30-35 mm, 35-40 mm, 40-45 mm, 45-50 mm, 50-55 mm, 55-60 mm, 60-65 mm, 65-70 mm, 70-75 mm, 75-80 mm, 80-85 mm or 85-90 mm, and the design of the length can enable the cathode of the dust removing electric field and the electric field device to have high temperature resistance and enable the electric field device to have high-efficiency dust collecting capability under high temperature impact.
In an embodiment of the invention, the distance between the anode of the dust-removing electric field and the cathode of the dust-removing electric field may be 5-30 mm, 2.5-139.9mm, 9.9-139.9 mm, 2.5-9.9 mm, 9.9-20 mm, 20-30 mm, 30-40 mm, 40-50 mm, 50-60 mm, 60-70 mm, 70-80 mm, 80-90 mm, 90-100 mm, 100-110 mm, 110-120 mm, 120-130 mm, 130-139.9 mm, 9.9mm, 139.9mm, or 2.5 mm. The distance between the anode of the dedusting electric field and the cathode of the dedusting electric field is also called the pole pitch. The inter-polar distance specifically refers to the minimum vertical distance between working surfaces of the anode and the cathode of the dust removal electric field. The selection of the polar distance can effectively reduce the electric field coupling and enables the electric field device to have high temperature resistance.
In one embodiment of the present invention, the diameter of the cathode of the dust-removing electric field is 1-3 mm, and the distance between the anode of the dust-removing electric field and the cathode of the dust-removing electric field is 2.5-139.9 mm; the ratio of the dust deposition area of the anode of the dust removal electric field to the discharge area of the cathode of the dust removal electric field is 1.667: 1-1680: 1.
in view of the specific performance of the ionized dust removal, the ionized dust removal can be suitable for removing the particulate matters in the gas. However, through many years of research of universities, research institutions and enterprises, the existing electric field dust removal device can only remove about 70% of particulate matters, and cannot meet the requirements of many industries. In addition, the electric field dust removal device in the prior art is too large in size.
The inventor of the present invention has found that the disadvantage of the electric field dust removing device in the prior art is caused by electric field coupling. The invention can obviously reduce the size (namely the volume) of the electric field dust removal device by reducing the coupling times of the electric field. For example, the size of the ionization dust removal device provided by the invention is about one fifth of the size of the existing ionization dust removal device. The reason is that the gas flow rate is set to be about 1m/s in the existing ionized dust removing device in order to obtain acceptable particle removal rate, but the invention can still obtain higher particle removal rate under the condition of increasing the gas flow rate to 6 m/s. When a given flow of gas is treated, the size of the electric field dust collector can be reduced as the gas velocity is increased.
In addition, the invention can obviously improve the particle removal efficiency. For example, the prior art electric field dust removing device can remove about 70% of the particulate matter in the engine exhaust gas at a gas flow rate of about 1m/s, but the present invention can remove about 99% of the particulate matter even at a gas flow rate of 6 m/s.
The present invention achieves the above-noted unexpected results as the inventors have discovered the effect of electric field coupling and have found a way to reduce the number of electric field couplings.
The ionizing dusting electric field between the dusting electric field anode and the dusting electric field cathode is also referred to as the first electric field. In an embodiment of the present invention, a second electric field not parallel to the first electric field is further formed between the anode of the dust removing electric field and the cathode of the dust removing electric field. In another embodiment of the present invention, the second electric field is not perpendicular to the flow channel of the ionization dust-removing electric field. The second electric field, also called auxiliary electric field, can be formed by one or two first auxiliary electrodes, which can be placed at the inlet or outlet of the ionizing dusting electric field when the second electric field is formed by one first auxiliary electrode, which can be charged at a negative potential, or at a positive potential. When the first auxiliary electrode is a cathode, the first auxiliary electrode is arranged at or close to an inlet of the ionization dust removal electric field; the first auxiliary electrode and the dedusting electric field anode form an included angle alpha, and the alpha is more than 0 degrees and less than or equal to 125 degrees, or more than or equal to 45 degrees and less than or equal to 125 degrees, or more than or equal to 60 degrees and less than or equal to 100 degrees, or more than or equal to 90 degrees. When the first auxiliary electrode is an anode, the first auxiliary electrode is arranged at or close to an outlet of the ionization dust removal electric field; the first auxiliary electrode and the dedusting electric field cathode form an included angle alpha, and the alpha is more than 0 degrees and less than or equal to 125 degrees, or more than or equal to 45 degrees and less than or equal to 125 degrees, or more than or equal to 60 degrees and less than or equal to 100 degrees, or more than or equal to 90 degrees. When the second electric field is formed by two first auxiliary electrodes, one of the first auxiliary electrodes may be charged with a negative potential and the other first auxiliary electrode may be charged with a positive potential; one first auxiliary electrode may be placed at the entrance of the ionizing electric field and the other first auxiliary electrode at the exit of the ionizing electric field. In addition, the first auxiliary electrode may be a part of the dedusting electric field cathode or the dedusting electric field anode, that is, the first auxiliary electrode may be formed by an extension section of the dedusting electric field cathode or the dedusting electric field anode, and the lengths of the dedusting electric field cathode and the dedusting electric field anode are different. The first auxiliary electrode may also be a single electrode, that is, the first auxiliary electrode may not be a part of the cathode of the dust removing electric field or the anode of the dust removing electric field, and in this case, the voltage of the second electric field is different from the voltage of the first electric field, and can be controlled individually according to the working condition.
The second electric field can apply a force towards the outlet of the ionization electric field to the negatively charged oxygen ion flow between the anode of the dust removal electric field and the cathode of the dust removal electric field, so that the negatively charged oxygen ion flow between the anode of the dust removal electric field and the cathode of the dust removal electric field has a moving speed towards the outlet. In the process of flowing in the gas into the ionization electric field and towards the outlet direction of the ionization electric field, the negatively charged oxygen ions move towards the anode of the dust removal electric field and towards the outlet direction of the ionization electric field, and the negatively charged oxygen ions are combined with particles in the gas in the process of moving towards the anode of the dust removal electric field and towards the outlet of the ionization electric field, because the oxygen ions have the moving speed towards the outlet, the oxygen ions are combined with the particles, stronger collision cannot be generated between the oxygen ions and the particles, so that the larger energy consumption caused by the stronger collision is avoided, the oxygen ions are ensured to be easily combined with the particles, the charging efficiency of the particles in the gas is higher, and further under the action of the anode of the dust removal electric field, more particles can be collected, and the dust removal efficiency of the electric field device is higher. The collection rate of the particles entering the electric field along the ion flow direction is improved by nearly one time by the electric field device compared with the collection rate of the particles entering the electric field along the reverse ion flow direction, so that the dust deposition efficiency of the electric field is improved, and the power consumption of the electric field is reduced. In addition, the main reason that the dust collection efficiency of the dust collection electric field in the prior art is low is that the direction of dust entering the electric field is opposite to or perpendicular to the direction of ion flow in the electric field, so that the dust and the ion flow collide violently with each other and generate large energy consumption, and the charge efficiency is also influenced, so that the dust collection efficiency of the electric field in the prior art is reduced, and the energy consumption is increased. When the electric field device collects dust in gas, the gas and the dust enter the electric field along the ion flow direction, the dust is fully charged, and the electric field consumption is low; the dust collecting efficiency of the monopole electric field can reach 99.99%. When gas and dust enter the electric field in the direction of the counter ion flow, the dust is insufficiently charged, the power consumption of the electric field is increased, and the dust collection efficiency is 40-75%. The ion flow formed by the electric field device in one embodiment of the invention is beneficial to unpowered fan fluid transportation, air intake oxygenation, heat exchange and the like.
Along with, the dust removal electric field positive pole is continuously collected the particulate matter etc. in admitting air, and particulate matter etc. pile up and form the dust on the dust removal electric field positive pole, and dust thickness constantly increases, makes the interpole distance reduce. In an embodiment of the present invention, when the electric field is accumulated with dust, the electric field device detects the electric field current and performs dust cleaning by any one of the following methods:
(1) when the electric field device detects that the electric field current increases to a given value, the electric field voltage is increased.
(2) When the electric field device detects that the electric field current is increased to a given value, the dust cleaning is completed by utilizing the electric field back corona discharge phenomenon.
(3) When the electric field device detects that the electric field current is increased to a given value, the electric field voltage is increased by utilizing the electric field back corona discharge phenomenon, the injection current is limited, and the dust cleaning is finished.
(4) When the electric field device detects that the electric field current is increased to a given value, the electric field voltage is increased by utilizing the electric field back corona discharge phenomenon, the injection current is limited, and the rapid discharge generated at the position of the carbon deposit of the anode generates plasma, the plasma deeply oxidizes the organic components of the dust, the macromolecular bonds are broken, and micromolecular carbon dioxide and water are formed, so that the dust cleaning is completed.
In an embodiment of the invention, the anode of the dust removing electric field and the cathode of the dust removing electric field are respectively electrically connected with two electrodes of the power supply. The voltage loaded on the anode of the dust removal electric field and the cathode of the dust removal electric field needs to be selected with proper voltage levels, and the specific selection of which voltage level depends on the volume, temperature resistance, dust holding rate and the like of the electric field device. For example, the voltage is from 1kv to 50 kv; the design firstly considers the temperature-resistant condition, the parameters of the inter-polar distance and the temperature: 1MM is less than 30 degrees, the dust accumulation area is more than 0.1 square/kilocubic meter/hour, the length of the electric field is more than 5 times of the inscribed circle of the single tube, and the air flow velocity of the electric field is controlled to be less than 9 meters/second. In one embodiment of the invention, the dedusting electric field anode is formed by a first hollow anode tube and is in a honeycomb shape. The first hollow anode tube port may be circular or polygonal in shape. In one embodiment of the invention, the value range of the internal tangent circle of the first hollow anode tube is 5-400mm, the corresponding voltage is 0.1-120kv, and the corresponding current of the first hollow anode tube is 0.1-30A; different inscribed circles correspond to different corona voltages, approximately 1KV/1 MM.
In an embodiment of the present invention, the electric field device includes a first electric field stage, the first electric field stage includes a plurality of first electric field generating units, and there may be one or more first electric field generating units. The first electric field generating unit is also called as a first dust collecting unit, the first dust collecting unit comprises the anode of the dedusting electric field and the cathode of the dedusting electric field, and one or more first dust collecting units are arranged. When the number of the first electric field stages is multiple, the dust collection efficiency of the electric field device can be effectively improved. In the same first electric field stage, the anodes of the dust removing electric fields are of the same polarity, and the cathodes of the dust removing electric fields are of the same polarity. And when the first electric field stages are multiple, the first electric field stages are connected in series. In an embodiment of the present invention, the electric field apparatus further includes a plurality of connecting housings, the first electric field stages connected in series are connected through the connecting housings; the distance of the first electric field stage of two adjacent stages is more than 1.4 times of the pole pitch.
In one embodiment of the present invention, an electric field is used to charge the electret material. In the event of a failure of the electric field device, the charged electret material will be used to remove dust.
In an embodiment of the invention, the electric field device includes an electret element.
In an embodiment of the invention, the electret element is disposed in the dedusting electric field anode.
In an embodiment of the present invention, when the anode of the dust-removing electric field and the cathode of the dust-removing electric field are powered on, an ionization dust-removing electric field is formed, and the electret element is in the ionization dust-removing electric field.
In an embodiment of the present invention, the electret element is close to the outlet of the electric field device, or the electret element is disposed at the outlet of the electric field device.
In an embodiment of the present invention, the dedusting electric field anode and the dedusting electric field cathode form a flow channel, and the electret element is disposed in the flow channel.
In an embodiment of the present invention, the flow channel includes a flow channel outlet, and the electret element is close to the flow channel outlet, or the electret element is disposed at the flow channel outlet.
In an embodiment of the invention, a cross section of the electret element in the flow channel accounts for 5% -100% of a cross section of the flow channel.
In an embodiment of the invention, a cross section of the electret element in the flow channel accounts for 10% -90%, 20% -80%, or 40% -60% of a cross section of the flow channel.
In an embodiment of the present invention, the ionizing dust-removing electric field charges the electret element.
In an embodiment of the invention, the electret element has a porous structure.
In an embodiment of the invention, the electret element is a fabric.
In an embodiment of the present invention, the inside of the dedusting electric field anode is tubular, the outside of the electret element is tubular, and the outside of the electret element is sleeved inside the dedusting electric field anode.
In an embodiment of the invention, the electret element is detachably connected to the dedusting electric field anode.
In an embodiment of the invention, the material of the electret element includes an inorganic compound having a electret property. The electret performance refers to the capability of an electret element to have charges after being charged by an external power supply and still keep certain charges under the condition of being completely separated from the power supply, so that the electret element can serve as an electrode to function as an electric field electrode.
In one embodiment of the present invention, the inorganic compound is selected from one or more of an oxygen-containing compound, a nitrogen-containing compound, or a glass fiber.
In one embodiment of the present invention, the oxygen-containing compound is selected from one or more of a metal-based oxide, an oxygen-containing compound, and an oxygen-containing inorganic heteropolyacid salt.
In an embodiment of the present invention, the metal-based oxide is selected from one or more of aluminum oxide, zinc oxide, zirconium oxide, titanium oxide, barium oxide, tantalum oxide, silicon oxide, lead oxide, and tin oxide.
In an embodiment of the present invention, the metal-based oxide is aluminum oxide.
In an embodiment of the present invention, the oxygen-containing compound is selected from one or more of a zirconium titanium compound oxide and a barium titanium compound oxide.
In an embodiment of the present invention, the oxygen-containing inorganic heteropolyacid salt is selected from one or more of zirconium titanate, lead zirconate titanate and barium titanate.
In an embodiment of the present invention, the nitrogen-containing compound is silicon nitride.
In an embodiment of the invention, the material of the electret element includes an organic compound having a electret property. The electret performance refers to the capability of an electret element to have charges after being charged by an external power supply and still keep certain charges under the condition of being completely separated from the power supply, so that the electret element can serve as an electrode to function as an electric field electrode.
In one embodiment of the present invention, the organic compound is selected from one or more of fluoropolymer, polycarbonate, PP, PE, PVC, natural wax, resin, and rosin.
In one embodiment of the present invention, the fluoropolymer is selected from one or more of Polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (Teflon-FEP), soluble Polytetrafluoroethylene (PFA), and polyvinylidene fluoride (PVDF).
In an embodiment of the present invention, the fluoropolymer is polytetrafluoroethylene.
The electric field device generates an ionization dust removal electric field under the condition of upper electric drive voltage, part of objects to be treated are ionized by the ionization dust removal electric field, particles in the air are adsorbed, and the electret element is charged at the same time.
In an embodiment of the invention, the air dust removing system further includes an ozone removing device for removing or reducing ozone generated by the electric field device, and the ozone removing device is arranged between the outlet of the electric field device and the outlet of the air dust removing system.
In an embodiment of the present invention, the ozone removing apparatus includes an ozone digester.
In an embodiment of the present invention, the ozone digester is at least one selected from an ultraviolet ozone digester and a catalytic ozone digester.
The air dust removal system also comprises an ozone removal device which is used for removing or reducing the ozone generated by the electric field device.
In an embodiment of the present invention, the present invention provides an air dust removing method, including the following steps:
passing the dust-containing air through an ionization dust-removing electric field generated by a dust-removing electric field anode and a dust-removing electric field cathode;
when the electric field is accumulated with dust, dust removal treatment is carried out.
In an embodiment of the present invention, when the detected field current increases to a given value, a dust removal process is performed.
In an embodiment of the present invention, when the electric field is accumulated with dust, the dust is cleaned by any one of the following methods:
(1) the dust cleaning treatment is completed by utilizing the electric field back corona discharge phenomenon.
(2) The electric field back corona discharge phenomenon is utilized, the voltage is increased, the injection current is limited, and the dust removal treatment is completed.
(3) The electric field back corona discharge phenomenon is utilized, the voltage is increased, the injection current is limited, the rapid discharge generated at the anode dust deposition position generates plasma, the plasma deeply oxidizes the organic components of the dust, the macromolecular bonds are broken, and micromolecular carbon dioxide and water are formed, so that the dust cleaning treatment is completed.
Preferably, the dust is carbon black.
In an embodiment of the invention, the dust removal electric field cathode includes a plurality of cathode filaments. The diameter of the cathode filament can be 0.1mm-20mm, and the size parameter is adjusted according to the application occasion and the dust accumulation requirement. In one embodiment of the present invention, the diameter of the cathode filament is not greater than 3 mm. In one embodiment of the invention, the cathode wire is made of metal wire or alloy wire which is easy to discharge, is temperature resistant, can support the self weight and is stable in electrochemistry. In an embodiment of the present invention, the cathode filament is made of titanium. The specific shape of the cathode filament is adjusted according to the shape of the dust removal electric field anode, for example, if the dust deposition surface of the dust removal electric field anode is a plane, the section of the cathode filament is circular; if the dust deposition surface of the dust removal electric field anode is a circular arc surface, the cathode filament needs to be designed into a polyhedral shape. The length of the cathode filament is adjusted according to the anode of the dust removal electric field.
In an embodiment of the present invention, the dust-removing electric field cathode includes a plurality of cathode bars. In an embodiment of the present invention, the diameter of the cathode bar is not greater than 3 mm. In one embodiment of the present invention, the cathode rod is made of a metal rod or an alloy rod which is easily discharged. The shape of the cathode rod may be needle-like, polygonal, burr-like, threaded rod-like, columnar, or the like. The shape of the cathode bar can be adjusted according to the shape of the dust removal electric field anode, for example, if the dust deposition surface of the dust removal electric field anode is a plane, the section of the cathode bar needs to be designed to be circular; if the dust deposition surface of the dust removal electric field anode is a circular arc surface, the cathode bar needs to be designed into a polyhedral shape.
In an embodiment of the present invention, the cathode of the dust-removing electric field is inserted into the anode of the dust-removing electric field.
In an embodiment of the present invention, the dedusting electric field anode includes one or more hollow anode tubes disposed in parallel. When the number of the hollow anode tubes is multiple, all the hollow anode tubes form a honeycomb-shaped dedusting electric field anode. In an embodiment of the present invention, the cross-section of the hollow anode tube may be circular or polygonal. If the cross section of the hollow anode tube is circular, a uniform electric field can be formed between the anode of the dust removal electric field and the cathode of the dust removal electric field, and dust is not easy to accumulate on the inner wall of the hollow anode tube. If the cross section of the hollow anode tube is triangular, 3 dust accumulation surfaces can be formed on the inner wall of the hollow anode tube, 3 far-angle dust containing angles are formed, and the dust containing rate of the hollow anode tube with the structure is highest. If the cross section of the hollow anode tube is quadrilateral, 4 dust accumulation surfaces and 4 dust containing corners can be obtained, but the splicing structure is unstable. If the cross section of the hollow anode tube is hexagonal, 6 dust accumulation surfaces and 6 dust containing angles can be formed, and the dust accumulation surfaces and the dust containing rate are balanced. If the cross section of the hollow anode tube is polygonal, more dust-collecting edges can be obtained, but the dust holding rate is lost. In an embodiment of the present invention, the diameter of the inner circle of the hollow anode tube ranges from 5mm to 400 mm.
In one embodiment of the present invention, the present invention provides a method for accelerating air, comprising the steps of:
passing air through a flow passage;
an electric field is generated in the flow channel, the electric field being non-perpendicular to the flow channel, the electric field including an inlet and an outlet.
Wherein the electric field ionizes the air.
In an embodiment of the invention, the electric field includes a first anode and a first cathode, the first anode and the first cathode form the flow channel, and the flow channel connects the inlet and the outlet. The first anode and the first cathode ionize air in the flow channel.
In an embodiment of the invention, the electric field includes a second electrode, and the second electrode is disposed at or near the inlet.
Wherein the second electrode is a cathode and is an extension of the first cathode. Preferably, the second electrode has an angle α with the first anode of 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.
In an embodiment of the invention, the second electrode is disposed independently of the first anode and the first cathode.
In an embodiment of the invention, the electric field includes a third electrode, and the third electrode is disposed at the inlet or near the outlet.
Wherein the third electrode is an anode, the third electrode being an extension of the first anode. Preferably, the third electrode has an angle α with the first cathode, and 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.
In an embodiment of the invention, the third electrode is disposed independently of the first anode and the first cathode.
In an embodiment of the invention, the first cathode includes a plurality of cathode filaments. The diameter of the cathode filament can be 0.1mm-20mm, and the size parameter is adjusted according to the application occasion and the dust accumulation requirement. In one embodiment of the present invention, the diameter of the cathode filament is not greater than 3 mm. In one embodiment of the invention, the cathode wire is made of metal wire or alloy wire which is easy to discharge, is temperature resistant, can support the self weight and is stable in electrochemistry. In an embodiment of the present invention, the cathode filament is made of titanium. The specific shape of the cathode filament is adjusted according to the shape of the first anode, for example, if the dust deposition surface of the first anode is a plane, the section of the cathode filament is circular; if the dust deposition surface of the first anode is a circular arc surface, the cathode filament needs to be designed into a polyhedral shape. The length of the cathode filament is adjusted according to the first anode.
In an embodiment of the invention, the first cathode includes a plurality of cathode bars. In an embodiment of the present invention, the diameter of the cathode bar is not greater than 3 mm. In one embodiment of the present invention, the cathode rod is made of a metal rod or an alloy rod which is easily discharged. The shape of the cathode rod may be needle-like, polygonal, burr-like, threaded rod-like, columnar, or the like. The shape of the cathode bar can be adjusted according to the shape of the first anode, for example, if the dust deposition surface of the first anode is a plane, the cross section of the cathode bar needs to be designed to be circular; if the dust deposition surface of the first anode is a circular arc surface, the cathode bar needs to be designed into a polyhedral shape.
In an embodiment of the invention, the first cathode is disposed through the first anode.
In one embodiment of the present invention, the first anode comprises one or more hollow anode tubes disposed in parallel. When there are a plurality of hollow anode tubes, all the hollow anode tubes constitute the honeycomb-shaped first anode. In an embodiment of the present invention, the cross-section of the hollow anode tube may be circular or polygonal. If the cross section of the hollow anode tube is circular, an even electric field can be formed between the first anode and the first cathode, and dust is not easy to accumulate on the inner wall of the hollow anode tube. If the cross section of the hollow anode tube is triangular, 3 dust accumulation surfaces can be formed on the inner wall of the hollow anode tube, 3 far-angle dust containing angles are formed, and the dust containing rate of the hollow anode tube with the structure is highest. If the cross section of the hollow anode tube is quadrilateral, 4 dust accumulation surfaces and 4 dust containing corners can be obtained, but the splicing structure is unstable. If the cross section of the hollow anode tube is hexagonal, 6 dust accumulation surfaces and 6 dust containing angles can be formed, and the dust accumulation surfaces and the dust containing rate are balanced. If the cross section of the hollow anode tube is polygonal, more dust-collecting edges can be obtained, but the dust holding rate is lost. In an embodiment of the present invention, the diameter of the inner circle of the hollow anode tube ranges from 5mm to 400 mm.
In one embodiment, the present invention provides a method for reducing coupling of an air dust removal electric field, comprising the steps of:
passing air through an ionization dust removal electric field generated by a dust removal electric field anode and a dust removal electric field cathode;
and selecting the dust removal electric field anode or/and the dust removal electric field cathode.
In an embodiment of the present invention, the size of the anode of the dust removing electric field or/and the size of the cathode of the dust removing electric field are selected to make the number of times of electric field coupling less than or equal to 3.
Specifically, the ratio of the dust collection area of the dedusting electric field anode to the discharge area of the dedusting electric field cathode is selected. Preferably, the ratio of the dust deposition area of the anode of the dust removal electric field to the discharge area of the cathode of the dust removal electric field is selected to be 1.667: 1-1680: 1.
more preferably, the ratio of the dust deposition area of the dust removal electric field anode to the discharge area of the dust removal electric field cathode is selected to be 6.67-56.67: 1.
in one embodiment of the present invention, the diameter of the cathode of the dust-removing electric field is 1-3 mm, and the distance between the anode of the dust-removing electric field and the cathode of the dust-removing electric field is 2.5-139.9 mm; the ratio of the dust deposition area of the anode of the dust removal electric field to the discharge area of the cathode of the dust removal electric field is 1.667: 1-1680: 1.
preferably, the distance between the poles of the dedusting electric field anode and the dedusting electric field cathode is selected to be less than 150 mm.
Preferably, the distance between the anode of the dust removal electric field and the cathode of the dust removal electric field is selected to be 2.5-139.9 mm. More preferably, the distance between the anode of the dust removing electric field and the cathode of the dust removing electric field is selected to be 5.0-100 mm.
Preferably, the length of the anode of the dedusting electric field is selected to be 10-180 mm. More preferably, the length of the anode of the dedusting electric field is selected to be 60-180 mm.
Preferably, the length of the cathode of the dedusting electric field is selected to be 30-180 mm. More preferably, the length of the cathode of the dedusting electric field is 54-176 mm.
In an embodiment of the invention, the dust removal electric field cathode includes a plurality of cathode filaments. The diameter of the cathode filament can be 0.1mm-20mm, and the size parameter is adjusted according to the application occasion and the dust accumulation requirement. In one embodiment of the present invention, the diameter of the cathode filament is not greater than 3 mm. In one embodiment of the invention, the cathode wire is made of metal wire or alloy wire which is easy to discharge, is temperature resistant, can support the self weight and is stable in electrochemistry. In an embodiment of the present invention, the cathode filament is made of titanium. The specific shape of the cathode filament is adjusted according to the shape of the dust removal electric field anode, for example, if the dust deposition surface of the dust removal electric field anode is a plane, the section of the cathode filament is circular; if the dust deposition surface of the dust removal electric field anode is a circular arc surface, the cathode filament needs to be designed into a polyhedral shape. The length of the cathode filament is adjusted according to the anode of the dust removal electric field.
In an embodiment of the present invention, the dust-removing electric field cathode includes a plurality of cathode bars. In an embodiment of the present invention, the diameter of the cathode bar is not greater than 3 mm. In one embodiment of the present invention, the cathode rod is made of a metal rod or an alloy rod which is easily discharged. The shape of the cathode rod may be needle-like, polygonal, burr-like, threaded rod-like, columnar, or the like. The shape of the cathode bar can be adjusted according to the shape of the dust removal electric field anode, for example, if the dust deposition surface of the dust removal electric field anode is a plane, the section of the cathode bar needs to be designed to be circular; if the dust deposition surface of the dust removal electric field anode is a circular arc surface, the cathode bar needs to be designed into a polyhedral shape.
In an embodiment of the present invention, the cathode of the dust-removing electric field is inserted into the anode of the dust-removing electric field.
In an embodiment of the present invention, the dedusting electric field anode includes one or more hollow anode tubes disposed in parallel. When the number of the hollow anode tubes is multiple, all the hollow anode tubes form a honeycomb-shaped dedusting electric field anode. In an embodiment of the present invention, the cross-section of the hollow anode tube may be circular or polygonal. If the cross section of the hollow anode tube is circular, a uniform electric field can be formed between the anode of the dust removal electric field and the cathode of the dust removal electric field, and dust is not easy to accumulate on the inner wall of the hollow anode tube. If the cross section of the hollow anode tube is triangular, 3 dust accumulation surfaces can be formed on the inner wall of the hollow anode tube, 3 far-angle dust containing angles are formed, and the dust containing rate of the hollow anode tube with the structure is highest. If the cross section of the hollow anode tube is quadrilateral, 4 dust accumulation surfaces and 4 dust containing corners can be obtained, but the splicing structure is unstable. If the cross section of the hollow anode tube is hexagonal, 6 dust accumulation surfaces and 6 dust containing angles can be formed, and the dust accumulation surfaces and the dust containing rate are balanced. If the cross section of the hollow anode tube is polygonal, more dust-collecting edges can be obtained, but the dust holding rate is lost. In an embodiment of the present invention, the diameter of the inner circle of the hollow anode tube ranges from 5mm to 400 mm.
In one embodiment, the present invention provides a method for removing dust from air, comprising the steps of:
1) adsorbing the particles in the air by using an ionization dust removal electric field;
2) the electret element is charged using an ionizing dusting electric field.
In an embodiment of the present invention, the electret element is close to the outlet of the electric field device, or the electret element is disposed at the outlet of the electric field device.
In an embodiment of the present invention, the dedusting electric field anode and the dedusting electric field cathode form a flow channel, and the electret element is disposed in the flow channel.
In an embodiment of the present invention, the flow channel includes a flow channel outlet, and the electret element is close to the flow channel outlet, or the electret element is disposed at the flow channel outlet.
In one embodiment of the present invention, the charged electret element is used to adsorb the particles in the air when the ionizing dust-removing electric field has no electric driving voltage.
In one embodiment of the present invention, after the charged electret element adsorbs certain particles in the air, it is replaced with a new electret element.
In one embodiment of the present invention, after the electret element is replaced with a new one, the ionization and dust removal electric field is restarted to adsorb the particles in the air and charge the new electret element.
In an embodiment of the invention, the material of the electret element includes an inorganic compound having a electret property. The electret performance refers to the capability of an electret element to have charges after being charged by an external power supply and still keep certain charges under the condition of being completely separated from the power supply, so that the electret element can serve as an electrode to function as an electric field electrode.
In one embodiment of the present invention, the inorganic compound is selected from one or more of an oxygen-containing compound, a nitrogen-containing compound, or a glass fiber.
In one embodiment of the present invention, the oxygen-containing compound is selected from one or more of a metal-based oxide, an oxygen-containing compound, and an oxygen-containing inorganic heteropolyacid salt.
In an embodiment of the present invention, the metal-based oxide is selected from one or more of aluminum oxide, zinc oxide, zirconium oxide, titanium oxide, barium oxide, tantalum oxide, silicon oxide, lead oxide, and tin oxide.
In an embodiment of the present invention, the metal-based oxide is aluminum oxide.
In an embodiment of the present invention, the oxygen-containing compound is selected from one or more of a zirconium titanium compound oxide and a barium titanium compound oxide.
In an embodiment of the present invention, the oxygen-containing inorganic heteropolyacid salt is selected from one or more of zirconium titanate, lead zirconate titanate and barium titanate.
In an embodiment of the present invention, the nitrogen-containing compound is silicon nitride.
In an embodiment of the invention, the material of the electret element includes an organic compound having a electret property. The electret performance refers to the capability of an electret element to have charges after being charged by an external power supply and still keep certain charges under the condition of being completely separated from the power supply, so that the electret element can serve as an electrode to function as an electric field electrode.
In one embodiment of the present invention, the organic compound is selected from one or more of fluoropolymer, polycarbonate, PP, PE, PVC, natural wax, resin, and rosin.
In one embodiment of the present invention, the fluoropolymer is selected from one or more of Polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (Teflon-FEP), soluble Polytetrafluoroethylene (PFA), and polyvinylidene fluoride (PVDF).
In an embodiment of the present invention, the fluoropolymer is polytetrafluoroethylene.
In an embodiment of the present invention, the present invention provides an air dust removing method, including the following steps: and the air is subjected to air ionization dust removal to remove or reduce ozone generated by the air ionization dust removal.
In one embodiment of the invention, ozone digestion is performed on ozone generated by air ionization dust removal.
In one embodiment of the present invention, the ozone digestion is at least one selected from the group consisting of uv digestion and catalytic digestion.
The air dusting system and method of the present invention are further illustrated by the following specific examples.
Example 1
Please refer to fig. 1, which is a schematic structural diagram of an air dust removing system in an embodiment. The air dust removal system 101 comprises an electric field device inlet 1011, a centrifugal separation mechanism 1012, a first water filtering mechanism 1013, an electric field device 1014, an insulating mechanism 1015, an air equalizing device, a second water filtering mechanism 1017 and/or an ozone mechanism 1018.
The first water filtering mechanism 1013 and/or the second water filtering mechanism 1017 are optional in the present invention, that is, the air dust removing system provided by the present invention may include the first water filtering mechanism 1013 and/or the second water filtering mechanism 1017, or may not include the first water filtering mechanism 1013 and/or the second water filtering mechanism 1017.
As shown in fig. 1, the electric field device inlet 1011 is disposed on the air inlet wall of the centrifugal separation mechanism 1012 to receive the gas with particulate matter.
The centrifugal separation mechanism 1012 arranged at the lower end of the air dust removing system 101 adopts a conical cylinder. The junction of the conical cylinder and the electric field device 1014 is an exhaust port, and a first filtering layer for filtering particles is arranged on the exhaust port. The bottom of the conical cylinder is provided with a powder outlet for receiving particles.
Specifically, when the gas containing particles enters the centrifugal separation mechanism 1012 from the inlet 1011 of the electric field device at a speed of generally 12-30m/s, the gas will change from linear motion to circular motion. The vast majority of the rotating air flow spirally flows downwards from the cylinder body along the wall of the device towards the cone. In addition, the particulate matter is thrown toward the inner wall of the separating mechanism by the centrifugal force, and once the particulate matter contacts the inner wall, the particulate matter falls along the wall surface by the momentum of the downward axial velocity near the inner wall, and is discharged from the powder outlet. The outward rotating airflow which rotates and descends continuously flows into the central part of the separating mechanism in the descending process to form centripetal radial airflow, and the airflow forms an upward rotating inward rotating airflow. The rotational directions of the inner and outer swirls are the same. Finally, the purified air is discharged into the electric field device 1014 through an air outlet and a first filter (not shown), and a part of the fine dust particles which are not separated can not escape.
The first water filtering mechanism 1013 disposed in the centrifugal separation mechanism 1012 includes a first electrode disposed at the electric field device inlet 1011, which is a conductive mesh plate, and the conductive mesh plate is used to conduct electrons to the liquid water after being powered on. The second electrode for adsorbing the charged liquid water is the anode dust deposition part of the electric field device 1014, i.e. the dust removing electric field anode 10141 in this embodiment.
Referring to fig. 2, a structural diagram of another embodiment of the first water filtering mechanism disposed in the air dedusting system is shown. The first electrode 10131 of the first water filtering mechanism is arranged at the air inlet, and the first electrode 10131 is a conductive screen plate with negative potential. Meanwhile, the second electrode 10132 of the present embodiment is disposed in the air intake device in a planar mesh shape, and the second electrode 10132 is charged with a positive potential, and the second electrode 10132 is also referred to as a collector. In this embodiment, the second electrode 10132 is a planar mesh, and the first electrode 10131 is parallel to the second electrode 10132. In this embodiment, a mesh surface electric field is formed between the first electrode 10131 and the second electrode 10132. In addition, the first electrode 10131 is a mesh structure made of metal wires, and the first electrode 10131 is made of a wire mesh. The area of the second electrode 10132 is larger than the area of the first electrode 10131 in this embodiment. The electric field device 1014 comprises a dust removal electric field anode 10141 and a dust removal electric field cathode 10142 arranged in the dust removal electric field anode 10141, an asymmetric electrostatic field is formed between the dust removal electric field anode 10141 and the dust removal electric field cathode 10142, wherein after gas containing particulate matters enters the electric field device 1014 through the exhaust port, the gas is ionized due to discharge of the dust removal electric field cathode 10142, so that the particulate matters obtain negative charges, move to the dust removal electric field anode 10141, and are deposited on the dust removal electric field anode 10141.
Specifically, the interior of the dedusting electric field anode 10141 is composed of a honeycomb-shaped and hollow anode tube bundle group, and the shape of the end opening of the anode tube bundle is hexagonal.
The dedusting electric field cathode 10142 comprises a plurality of electrode rods which penetrate through each anode tube bundle in the anode tube bundle group in a one-to-one correspondence manner, wherein the electrode rods are in a needle shape, a polygonal shape, a burr shape, a threaded rod shape or a columnar shape.
In this embodiment, the gas outlet end of the cathode 10142 of the dust removing electric field is lower than the gas outlet end of the anode 10141 of the dust removing electric field, and the gas outlet end of the cathode 10142 of the dust removing electric field is flush with the gas inlet end of the anode 10141 of the dust removing electric field, so that an accelerating electric field is formed inside the electric field device 1014.
The insulating mechanism 1015 includes an insulating portion and a heat insulating portion. The insulating part is made of ceramic materials or glass materials. The insulating part is an umbrella-shaped ceramic column or glass column string, or a columnar ceramic column or glass column string, and glaze is hung inside and outside the umbrella or inside and outside the column.
As shown in fig. 1, in an embodiment of the present invention, the dust-removing electric field cathode 10142 is mounted on a cathode support plate 10143, and the cathode support plate 10143 and the dust-removing electric field anode 10141 are connected through an insulating mechanism 1015. The insulating mechanism 1015 is used for realizing the insulation between the cathode support plate 10143 and the dedusting electric field anode 10141. In one embodiment of the present invention, the dedusting electric field anode 10141 includes a first anode portion 101412 and a second anode portion 101411, i.e., the first anode portion 101412 is near the electric field device inlet and the second anode portion 101411 is near the electric field device outlet. The cathode support plate and the insulating mechanism are arranged between the first anode part 101412 and the second anode part 101411, namely the insulating mechanism 1015 is arranged between the ionization electric fields or the dust removing electric field cathode 10142, which can well support the dust removing electric field cathode 10142 and fix the dust removing electric field cathode 10142 relative to the dust removing electric field anode 10141, so that a set distance is kept between the dust removing electric field cathode 10142 and the dust removing electric field anode 10141.
Please refer to fig. 3A, fig. 3B and fig. 3C, which are three structural diagrams of the wind equalizing device.
As shown in fig. 3A, when the anode of the dedusting electric field is cylindrical, the wind equalizing device 1016 is located between the inlet 1011 of the dedusting system and the ionization dedusting electric field formed by the anode of the dedusting electric field and the cathode of the dedusting electric field, and is composed of a plurality of wind equalizing blades 10161 rotating around the center of the inlet 1011 of the dedusting system. The air equalizing device can enable air to uniformly pass through an electric field generated by the dust removing electric field anode. Meanwhile, the temperature inside the anode of the dedusting electric field can be kept constant, and oxygen is sufficient.
As shown in fig. 3B, when the dedusting electric field anode has a cubic shape, the wind equalizing device 1020 includes:
the air inlet pipe 10201 is arranged at one side of the anode of the dedusting electric field; and
the air outlet pipe 10202 is arranged at the other side edge of the anode of the dedusting electric field; wherein, the side of the air inlet tube 10201 is opposite to the other side of the air outlet tube 10202.
As shown in fig. 3C, the air equalizing device 1026 may further include a first venturi plate air equalizing mechanism 1028 disposed at the air inlet end of the anode of the dust removal electric field, and a second venturi plate air equalizing mechanism 1030 disposed at the air outlet end of the anode of the dust removal electric field (the second venturi plate air equalizing mechanism 1030 is folded as seen in the top view of the second venturi plate air equalizing mechanism shown in fig. 3D), wherein the first venturi plate air equalizing mechanism is provided with air inlets, the second venturi plate air equalizing mechanism is provided with air outlets, the air inlets and the air outlets are arranged in a staggered manner, and the front air inlet side is used for discharging air to form a cyclone structure.
In this embodiment, a second filter screen is disposed at the junction of the electric field device 1014 and the second water filtering mechanism 1017 for filtering fine particles with smaller particle size which are not treated by the electric field device 1014.
The second water filtering means 1017 provided at the air outlet end includes: third filter screen, pivot and water blocking ball.
The third filter screen is obliquely arranged at the air outlet end through a rotating shaft, wherein a water blocking ball is arranged at the position, corresponding to the air outlet, of the third filter screen. And the gas to be fed pushes the third filter screen to rotate around the rotating shaft, a water film is formed on the third filter screen, and the water blocking ball blocks the air outlet end to prevent water from rushing out.
The ozone mechanism 1018 arranged at the air outlet end of the dust removing electric field system adopts an ozone removing lamp tube.
Example 2
The electric field device shown in fig. 4 includes a dust removing electric field anode 10141, a dust removing electric field cathode 10142, and an electret element 205, wherein an ionization dust removing electric field is formed when the dust removing electric field anode 10141 and the dust removing electric field cathode 10142 are powered on, the electret element 205 is disposed in the ionization dust removing electric field, and an arrow direction in fig. 4 is a flow direction of a material to be treated. The electret element is arranged at the outlet of the electric field device. The ionizing dust removal electric field charges the electret element. The electret element has a porous structure, and the material of the electret element is alumina. The dust removal electric field anode is tubular, the electret element is tubular, and the electret element is sleeved inside the dust removal electric field anode. The electret element is detachably connected with the dust removal electric field anode.
A method for removing dust from air comprises the following steps:
a) adsorbing the particles in the air by using an ionization dust removal electric field;
b) the electret element is charged using an ionizing dusting electric field.
Wherein the electret element is arranged at an outlet of the electric field device; the material of the electret element is alumina; when the ionization dust removal electric field has no upper electric drive voltage, the charged electret element is used for adsorbing particles in the air; after the charged electret element adsorbs certain particles in the air, replacing the charged electret element with a new electret element; and after the electret element is replaced by a new electret element, the ionization dust removal electric field is restarted to adsorb particulate matters in the air and charge the new electret element.
Example 3
The electric field device shown in fig. 5 and 6 comprises a dust removing electric field anode 10141, a dust removing electric field cathode 10142 and an electret element 205, wherein the dust removing electric field anode 10141 and the dust removing electric field cathode 10142 form a flow channel 292, the electret element 205 is arranged in the flow channel 292, and the arrow direction in fig. 5 is the flow direction of the to-be-treated material. The flow passage 292 includes a flow passage outlet proximate to which the electret element 205 is disposed. The cross section of the electret element in the flow channel occupies 10% of the cross section of the flow channel, as shown in fig. 7, which is S2/(S1+ S2) × 100%, wherein the first cross sectional area of S2 is the cross sectional area of the electret element in the flow channel, the sum of the first cross sectional area of S1 and the second cross sectional area of S2 is the cross sectional area of the flow channel, and the first cross sectional area of S1 does not include the cross sectional area of the dedusting electric field cathode 10142. And when the anode of the dust removal electric field and the cathode of the dust removal electric field are connected with a power supply, an ionization dust removal electric field is formed. The ionizing dust removal electric field charges the electret element. The electret element has a porous structure, and the material of the electret element is polytetrafluoroethylene. The dust removal electric field anode is tubular, the electret element is tubular, and the electret element is sleeved inside the dust removal electric field anode. The electret element is detachably connected with the dust removal electric field anode.
In an embodiment of the present invention, a method for removing dust from air includes the following steps:
1) adsorbing the particles in the air by using an ionization dust removal electric field;
2) the electret element is charged using an ionizing dusting electric field.
Wherein the electret element is proximate to the flow channel outlet; the material of the electret element is polytetrafluoroethylene; when the ionization dust removal electric field has no upper electric drive voltage, the charged electret element is used for adsorbing particles in the air; after the charged electret element adsorbs certain particles in the air, replacing the charged electret element with a new electret element; and after the electret element is replaced by a new electret element, the ionization dust removal electric field is restarted to adsorb particulate matters in the air and charge the new electret element.
Example 4
As shown in fig. 8, the air dedusting system includes an electric field device including a dedusting electric field anode 10141 and a dedusting electric field cathode 10142, and an ozone removal device 206 for removing or reducing ozone generated by the electric field device between an outlet of the electric field device and an outlet of the air dedusting system. The dedusting electric field anode 10141 and the dedusting electric field cathode 10142 are used for generating an ionizing dedusting electric field. The ozone removing device comprises an ozone digester used for digesting the ozone generated by the electric field device, the ozone digester is an ultraviolet ozone digester, and the arrow direction in the figure is the air inlet flowing direction.
An air dust removal method comprises the following steps: the air is subjected to air ionization dust removal, and then ozone digestion is carried out on ozone generated by the air ionization dust removal, wherein the ozone digestion is ultraviolet ray digestion.
The ozone removing device is used for removing or reducing the ozone generated by the electric field device, and the ozone is formed because oxygen in the air participates in ionization.
Example 5
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
As shown in fig. 9, 10 and 11, in this embodiment, the dedusting electric field anode 4051 is in the shape of a hollow regular hexagon tube, the dedusting electric field cathode 4052 is in the shape of a rod, and the dedusting electric field cathode 4052 is inserted into the dedusting electric field anode 4051.
A method of reducing electric field coupling comprising the steps of: the ratio of the dust collection area of the dedusting electric field anode 4051 to the discharge area of the dedusting electric field cathode 4052 was selected to be 6.67: 1, the inter-polar distance between the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field is 9.9mm, the anode 4051 of the dedusting electric field is 60mm, the cathode 4052 of the dedusting electric field is 54mm, the anode 4051 of the dedusting electric field comprises a fluid channel, the fluid channel comprises an inlet end and an outlet end, the cathode 4052 of the dedusting electric field is disposed in the fluid channel, the cathode 4052 of the dedusting electric field extends along the fluid channel of the dust collecting electrode, the inlet end of the anode 4051 of the dedusting electric field is flush with the near inlet end of the cathode 4052 of the dedusting electric field, an included angle α is formed between the outlet end of the anode 4051 of the dedusting electric field and the near outlet end of the cathode 4052 of the dedusting electric field, and α is 118 °, further under the action of the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field, more substances to be processed can be collected, the number of electric field coupling times is less than or equal to 3, and the coupling consumption of the electric field to aerosol, water mist, oil mist and loose and smooth particles can be reduced, the electric energy of the electric field is saved by 30-50%.
The electric field device in the embodiment comprises a plurality of electric field stages formed by the electric field generating units, and the electric field stages are arranged in plurality, so that the dust collecting efficiency of the electric field device is effectively improved by utilizing a plurality of dust collecting units. In the same electric field level, the anodes of the dust removing electric fields have the same polarity, and the cathodes of the dust removing electric fields have the same polarity.
The electric field stages in the plurality of electric field stages are connected in series, the electric field stages in series are connected through the connecting shell, and the distance between the electric field stages of two adjacent stages is larger than 1.4 times of the inter-pole distance. As shown in fig. 12, the electric field level is two levels, i.e., a first level electric field and a second level electric field, and the first level electric field and the second level electric field are connected in series by the connecting housing.
In this embodiment, the substance to be treated may be granular dust, or may be other impurities to be treated, such as aerosol, water mist, oil mist, and the like.
Example 6
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
In this embodiment, the anode 4051 of the dedusting electric field is in the shape of a hollow regular hexagon tube, the cathode 4052 of the dedusting electric field is in the shape of a rod, and the cathode 4052 of the dedusting electric field is inserted into the anode 4051 of the dedusting electric field.
A method of reducing electric field coupling comprising the steps of: the ratio of the dust collecting area of the anode 4051 of the dedusting electric field to the discharging area of the cathode 4052 of the dedusting electric field is selected to be 1680: 1, the inter-polar distance between the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field is 139.9mm, the anode 4051 of the dedusting electric field is 180mm, the cathode 4052 of the dedusting electric field is 180mm, the anode 4051 of the dedusting electric field comprises a fluid channel, the fluid channel comprises an inlet end and an outlet end, the cathode 4052 of the dedusting electric field is arranged in the fluid channel, the cathode 4052 of the dedusting electric field extends along the fluid channel of the dust collecting electrode, the inlet end of the anode 4051 of the dedusting electric field is flush with the near inlet end of the cathode 4052 of the dedusting electric field, the outlet end of the anode 4051 of the dedusting electric field is flush with the near outlet end of the cathode 4052 of the dedusting electric field, and further under the action of the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field, more substances to be processed can be collected, the electric field coupling frequency is less than or equal to 3, and the coupling consumption of the electric field to aerosol, water mist, oil mist and loose and smooth particles can be reduced, the electric energy of the electric field is saved by 20-40%.
In this embodiment, the substance to be treated may be granular dust, or may be other impurities to be treated, such as aerosol, water mist, oil mist, and the like.
Example 7
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
In this embodiment, the anode 4051 of the dedusting electric field is in the shape of a hollow regular hexagon tube, the cathode 4052 of the dedusting electric field is in the shape of a rod, and the cathode 4052 of the dedusting electric field is inserted into the anode 4051 of the dedusting electric field.
A method of reducing electric field coupling comprising the steps of: the ratio of the dust collection area of the anode 4051 of the dust removal electric field to the discharge area of the cathode 4052 of the dust removal electric field is selected to be 1.667: 1, the inter-polar distance between the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field is 2.4mm, the anode 4051 of the dedusting electric field is 30mm, the cathode 4052 of the dedusting electric field is 30mm, the anode 4051 of the dedusting electric field comprises a fluid channel, the fluid channel comprises an inlet end and an outlet end, the cathode 4052 of the dedusting electric field is arranged in the fluid channel, the cathode 4052 of the dedusting electric field extends along the fluid channel of the dust collecting electrode, the inlet end of the anode 4051 of the dedusting electric field is flush with the near inlet end of the cathode 4052 of the dedusting electric field, the outlet end of the anode 4051 of the dedusting electric field is flush with the near outlet end of the cathode 4052 of the dedusting electric field, and further under the action of the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field, more substances to be processed can be collected, the electric field coupling frequency is less than, saving electric energy of the electric field by 10-30%.
In this embodiment, the substance to be treated may be granular dust, or may be other impurities to be treated, such as aerosol, water mist, oil mist, and the like.
Example 8
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
As shown in fig. 9, 10 and 11, in this embodiment, the dedusting electric field anode 4051 is in the shape of a hollow regular hexagon tube, the dedusting electric field cathode 4052 is in the shape of a rod, the dedusting electric field cathode 4052 is inserted into the dedusting electric field anode 4051, and the ratio of the dust collection area of the dedusting electric field anode 4051 to the discharge area of the dedusting electric field cathode 4052 is 6.67: 1, the distance between the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field is 9.9mm, the length of the anode 4051 of the dedusting electric field is 60mm, the length of the cathode 4052 of the dedusting electric field is 54mm, the dedusting electric field anode 4051 comprises a fluid channel, the fluid channel comprises an inlet end and an outlet end, the dust removing electric field cathode 4052 is arranged in the fluid channel, the dust removing electric field cathode 4052 extends along the direction of the dust collecting electrode fluid channel, the inlet end of the dust removing electric field anode 4051 is flush with the near inlet end of the dust removing electric field cathode 4052, an included angle alpha is formed between the outlet end of the dust removing electric field anode 4051 and the near outlet end of the dust removing electric field cathode 4052, and alpha is 118 degrees, and then under the effect of dust removal electric field positive pole 4051 and dust removal electric field negative pole 4052, can collect more pending material, guarantee that this electric field generating element's dust collection efficiency is higher, and typical exhaust gas granule pm0.23 dust collection efficiency is 99.99%.
The electric field device in the embodiment comprises a plurality of electric field stages formed by the electric field generating units, and the electric field stages are arranged in plurality, so that the dust collecting efficiency of the electric field device is effectively improved by utilizing a plurality of dust collecting units. In the same electric field level, the anodes of the dust removing electric fields have the same polarity, and the cathodes of the dust removing electric fields have the same polarity.
The electric field stages in the plurality of electric field stages are connected in series, the electric field stages in series are connected through the connecting shell, and the distance between the electric field stages of two adjacent stages is larger than 1.4 times of the pole pitch. As shown in fig. 12, the electric field levels are two stages, a first stage electric field 4053 and a second stage electric field 4054, and the first stage electric field 4053 and the second stage electric field 4054 are connected in series by a connecting housing 4055.
In this embodiment, the substance to be treated may be granular dust, or may be other impurities to be treated, such as aerosol, water mist, oil mist, and the like.
Example 9
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
In this embodiment, the anode 4051 of the dedusting electric field is in the shape of a hollow regular hexagon tube, the cathode 4052 of the dedusting electric field is in the shape of a rod, the cathode 4052 of the dedusting electric field is inserted into the anode 4051 of the dedusting electric field, and the ratio of the dust collection area of the anode 4051 of the dedusting electric field to the discharge area of the cathode 4052 of the dedusting electric field is 1680: 1, the inter-polar distance between the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field is 139.9mm, the anode 4051 of the dedusting electric field is 180mm, the cathode 4052 of the dedusting electric field is 180mm, the anode 4051 of the dedusting electric field comprises a fluid channel, the fluid channel comprises an inlet end and an outlet end, the cathode 4052 of the dedusting electric field is disposed in the fluid channel, the cathode 4052 of the dedusting electric field extends along the fluid channel of the dust collecting electrode, the inlet end of the anode 4051 of the dedusting electric field is flush with the near inlet end of the cathode 4052 of the dedusting electric field, the outlet end of the anode 4051 of the dedusting electric field is flush with the near outlet end of the cathode 4052 of the dedusting electric field, and further under the action of the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field, more substances to be processed can be collected, so that the dust collecting efficiency of the electric field device is higher, and the typical exhaust particle pm collecting efficiency is 99.23.
The electric field device in the embodiment comprises a plurality of electric field stages formed by the electric field generating units, and the electric field stages are arranged in plurality, so that the dust collecting efficiency of the electric field device is effectively improved by utilizing a plurality of dust collecting units. In the same electric field level, the anodes of the dust removing electric fields have the same polarity, and the cathodes of the dust removing electric fields have the same polarity.
In this embodiment, the substance to be treated may be granular dust, or may be other impurities to be treated, such as aerosol, water mist, oil mist, and the like.
Example 10
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
In this embodiment, the anode 4051 of the dedusting electric field is in the shape of a hollow regular hexagon tube, the cathode 4052 of the dedusting electric field is in the shape of a rod, the cathode 4052 of the dedusting electric field is inserted into the anode 4051 of the dedusting electric field, and the ratio of the dust collection area of the anode 4051 of the dedusting electric field to the discharge area of the cathode 4052 of the dedusting electric field is 1.667: 1, the distance between the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field is 2.4 mm. The length of the anode 4051 of the dust removal electric field is 30mm, the length of the cathode 4052 of the dust removal electric field is 30mm, the anode 4051 of the dust removal electric field comprises a fluid channel, the fluid channel comprises an inlet end and an outlet end, the cathode 4052 of the dust removal electric field is arranged in the fluid channel, the cathode 4052 of the dust removal electric field extends along the direction of the fluid channel of the dust collection electrode, the inlet end of the anode 4051 of the dust removal electric field is flush with the near inlet end of the cathode 4052 of the dust removal electric field, the outlet end of the anode 4051 of the dust removal electric field is flush with the near outlet end of the cathode 4052 of the dust removal electric field, and further under the action of the anode 4051 of the dust removal electric field and the cathode 4052 of the dust removal electric field, more substances to be treated can be collected, the pm collection efficiency of the electric field device is higher, and the typical exhaust particle collection efficiency of 0.23 is 99.99%.
In this embodiment, the anode 4051 and the cathode 4052 form a plurality of dust collecting units, so as to effectively improve the dust collecting efficiency of the electric field apparatus.
In this embodiment, the substance to be treated may be granular dust, or may be other impurities to be treated, such as aerosol, water mist, oil mist, and the like.
Example 11
The air dust removing system in this embodiment includes the electric field device in embodiment 8, embodiment 9, or embodiment 10. The air needs to flow through the electric field device first to utilize the electric field device to remove dust waiting for processing substance in the air effectively, guarantee that the air is cleaner, and impurity such as dust is less.
Example 12
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
In this embodiment, the anode 4051 of the dedusting electric field is in a shape of a hollow regular hexagon tube, the cathode 4052 of the dedusting electric field is in a shape of a rod, the cathode 4052 of the dedusting electric field is inserted into the anode 4051 of the dedusting electric field, the anode 4051 of the dedusting electric field is 5cm in length, the cathode 4052 of the dedusting electric field is 5cm in length, the anode 4051 of the dedusting electric field includes a fluid channel, the fluid channel includes an inlet end and an outlet end, the cathode 4052 of the dedusting electric field is disposed in the fluid channel, the cathode 4052 of the dedusting electric field extends along the fluid channel of the dedusting electrode, the inlet end of the anode 4051 of the dedusting electric field is flush with the near inlet end of the cathode 4052 of the dedusting electric field, the outlet end of the anode 4051 of the dedusting electric field is flush with the near outlet end of the cathode 4052 of the dedusting electric field, the distance between the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field is 9.9mm, and the anode 4051 of the dedusting electric field is resistant to high temperature impact, and more substances to be treated can be collected, so that the dust collection efficiency of the electric field generation unit is higher. The dust collection efficiency is 99.9% corresponding to the electric field temperature of 200 ℃; the dust collection efficiency is 90% corresponding to the electric field temperature of 400 ℃; the electric field temperature of 500 ℃ corresponds to a dust collecting efficiency of 50%.
The electric field device in the embodiment comprises a plurality of electric field stages formed by the electric field generating units, and the electric field stages are arranged in plurality, so that the dust collecting efficiency of the electric field device is effectively improved by utilizing a plurality of dust collecting units. In the same electric field level, the anodes of the dust removing electric fields have the same polarity, and the cathodes of the dust removing electric fields have the same polarity.
In this embodiment, the material to be treated may be dust in the form of particles.
Example 13
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
In this embodiment, the anode 4051 of the dedusting electric field is in a shape of a hollow regular hexagon tube, the cathode 4052 of the dedusting electric field is in a shape of a rod, the cathode 4052 of the dedusting electric field is inserted into the anode 4051 of the dedusting electric field, the anode 4051 of the dedusting electric field is 9cm in length, the cathode 4052 of the dedusting electric field is 9cm in length, the anode 4051 of the dedusting electric field includes a fluid channel, the fluid channel includes an inlet end and an outlet end, the cathode 4052 of the dedusting electric field is disposed in the fluid channel, the cathode 4052 of the dedusting electric field extends along the fluid channel of the dedusting electrode, the inlet end of the anode 4051 of the dedusting electric field is flush with the near inlet end of the cathode 4052 of the dedusting electric field, the outlet end of the anode 4051 of the dedusting electric field is flush with the near outlet end of the cathode 4052 of the dedusting electric field, the distance between the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field is 139.9mm, and the anode 4051 of the dedusting electric field is resistant to high temperature impact, and more substances to be treated can be collected, so that the dust collection efficiency of the electric field generation unit is higher. The dust collection efficiency is 99.9% corresponding to the electric field temperature of 200 ℃; the dust collection efficiency is 90% corresponding to the electric field temperature of 400 ℃; the electric field temperature of 500 ℃ corresponds to a dust collecting efficiency of 50%.
The electric field device in the embodiment comprises a plurality of electric field stages formed by the electric field generating units, and the electric field stages are arranged in plurality, so that the dust collecting efficiency of the electric field device is effectively improved by utilizing a plurality of dust collecting units. In the same electric field level, the anodes of the storage electric fields have the same polarity, and the cathodes of the dust removal electric fields have the same polarity.
In this embodiment, the material to be treated may be dust in the form of particles.
Example 14
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
In this embodiment, the anode 4051 of the dedusting electric field is in a shape of a hollow regular hexagon tube, the cathode 4052 of the dedusting electric field is in a shape of a rod, the cathode 4052 of the dedusting electric field is inserted into the anode 4051 of the dedusting electric field, the anode 4051 of the dedusting electric field is 1cm in length, the cathode 4052 of the dedusting electric field is 1cm in length, the anode 4051 of the dedusting electric field includes a fluid channel, the fluid channel includes an inlet end and an outlet end, the cathode 4052 of the dedusting electric field is disposed in the fluid channel, the cathode 4052 of the dedusting electric field extends along the fluid channel of the dedusting electrode, the inlet end of the anode 4051 of the dedusting electric field is flush with the near inlet end of the cathode 4052 of the dedusting electric field, the outlet end of the anode 4051 of the dedusting electric field is flush with the near outlet end of the cathode 4052 of the dedusting electric field, the distance between the anode 4051 of the dedusting electric field and the cathode 4052 of the dedusting electric field is 2.4mm, and the anode 4051 of the dedusting electric field is resistant to high temperature impact, and more substances to be treated can be collected, so that the dust collection efficiency of the electric field generation unit is higher. The dust collection efficiency is 99.9% corresponding to the electric field temperature of 200 ℃; the dust collection efficiency is 90% corresponding to the electric field temperature of 400 ℃; the electric field temperature of 500 ℃ corresponds to a dust collecting efficiency of 50%.
The electric field device in the embodiment comprises a plurality of electric field stages formed by the electric field generating units, and the electric field stages are arranged in plurality, so that the dust collecting efficiency of the electric field device is effectively improved by utilizing a plurality of dust collecting units. In the same electric field level, the anodes of the dust removing electric fields have the same polarity, and the cathodes of the dust removing electric fields have the same polarity.
The electric field stages in the plurality of electric field stages are connected in series, the electric field stages in series are connected through the connecting shell, and the distance between the electric field stages of two adjacent stages is larger than 1.4 times of the inter-pole distance. The electric field level is two levels, namely a first level electric field and a second level electric field, and the first level electric field and the second level electric field are connected in series through a connecting shell.
In this embodiment, the material to be treated may be dust in the form of particles.
Example 15
The electric field generating unit in this embodiment can be applied to an electric field device, as shown in fig. 9, and includes a dust removing electric field anode 4051 and a dust removing electric field cathode 4052 for generating an electric field, where the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to two electrodes of a power supply, the power supply is a dc power supply, and the dust removing electric field anode 4051 and the dust removing electric field cathode 4052 are respectively electrically connected to an anode and a cathode of the dc power supply. In this embodiment, the dedusting electric field anode 4051 has a positive potential and the dedusting electric field cathode 4052 has a negative potential.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field anode 4051 and the dust removing electric field cathode 4052.
As shown in fig. 9 and 10, in this embodiment, the dedusting electric field anode 4051 is in the shape of a hollow regular hexagon tube, the dedusting electric field cathode 4052 is in the shape of a rod, the dedusting electric field cathode 4052 is inserted into the dedusting electric field anode 4051, the dedusting electric field anode 4051 has a length of 3cm, the dedusting electric field cathode 4052 has a length of 2cm, the dedusting electric field anode 4051 includes a fluid channel, the fluid channel includes an inlet end and an outlet end, the dedusting electric field cathode 4052 is disposed in the fluid channel, the dedusting electric field cathode 4052 extends along the direction of the dust collecting pole fluid channel, the inlet end of the dedusting electric field anode 4051 is flush with the near inlet end of the dedusting electric field cathode 4052, an included angle α is formed between the outlet end of the dedusting electric field anode 4051 and the near outlet end of the dedusting electric field cathode 4052, and α is 90 °, the distance between the dedusting electric field anode 4051 and the dust collecting electric field cathode 4052 is 20mm, and under the actions of the dedusting electric field anode 4051 and the dedusting electric field cathode 4052, so that the electric field generator is resistant to high-temperature impact, and can collect more substances to be treated, thereby ensuring higher dust collection efficiency of the electric field generator. The dust collection efficiency is 99.9% corresponding to the electric field temperature of 200 ℃; the dust collection efficiency is 90% corresponding to the electric field temperature of 400 ℃; the electric field temperature of 500 ℃ corresponds to a dust collecting efficiency of 50%.
The electric field device in the embodiment comprises a plurality of electric field stages formed by the electric field generating units, and the electric field stages are arranged in plurality, so that the dust collecting efficiency of the electric field device is effectively improved by utilizing a plurality of dust collecting units. In the same electric field stage, the dust collectors have the same polarity, and the discharge electrodes have the same polarity.
The electric field stages in the plurality of electric field stages are connected in series, the electric field stages in series are connected through the connecting shell, and the distance between the electric field stages of two adjacent stages is larger than 1.4 times of the inter-pole distance. As shown in fig. 12, the electric field level is two levels, i.e., a first level electric field and a second level electric field, and the first level electric field and the second level electric field are connected in series by the connecting housing.
In this embodiment, the material to be treated may be dust in the form of particles.
Example 16
The air dust removing system in this embodiment includes the electric field device in embodiment 12, embodiment 13, embodiment 14, or embodiment 15. The air needs to flow through the electric field device first, so that the electric field device is utilized to effectively remove substances waiting for treatment of dust in the air, the air is ensured to be cleaner, and impurities such as the dust are less.
Example 17
The electric field device in this embodiment can be applied to an air dust removal system, and includes a dust removal electric field cathode 5081 and a dust removal electric field anode 5082 which are electrically connected to the cathode and the anode of the dc power supply, respectively, and an auxiliary electrode 5083 which is electrically connected to the anode of the dc power supply. In this embodiment, the dedusting electric field cathode 5081 has a negative potential, and the dedusting electric field anode 5082 and the auxiliary electrode 5083 each have a positive potential.
Meanwhile, as shown in fig. 13, the auxiliary electrode 5083 is fixedly connected to the dust removing field anode 5082 in this embodiment. After the dedusting electric field anode 5082 is electrically connected to the anode of the dc power supply, the auxiliary electrode 5083 is also electrically connected to the anode of the dc power supply, and the auxiliary electrode 5083 and the dedusting electric field anode 5082 have the same positive potential.
As shown in fig. 13, the auxiliary electrode 5083 may extend in the front-rear direction in this embodiment, i.e., the length direction of the auxiliary electrode 5083 may be the same as the length direction of the dust removing field anode 5082.
As shown in fig. 13, in this embodiment, the dust-removing electric field anode 5082 is tubular, the dust-removing electric field cathode 5081 is rod-shaped, and the dust-removing electric field cathode 5081 is inserted into the dust-removing electric field anode 5082. In this embodiment, the auxiliary electrode 5083 is also tubular, and the auxiliary electrode 5083 and the dedusting electric field anode 5082 form an anode tube 5084. The front end of the anode tube 5084 is flush with the dedusting electric field cathode 5081, the rear end of the anode tube 5084 is extended rearward beyond the rear end of the dedusting electric field cathode 5081, and the portion of the anode tube 5084 extended rearward beyond the dedusting electric field cathode 5081 is the auxiliary electrode 5083. That is, in this embodiment, the dust removal electric field anode 5082 and the dust removal electric field cathode 5081 have the same length, and the dust removal electric field anode 5082 and the dust removal electric field cathode 5081 are opposite to each other in position in the front-rear direction; the auxiliary electrode 5083 is located behind the dedusting electric field anode 5082 and the dedusting electric field cathode 5081. Thus, an auxiliary electric field is formed between the auxiliary electrode 5083 and the dedusting electric field cathode 5081, and the auxiliary electric field applies a backward force to the negatively charged oxygen ion stream between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081, so that the negatively charged oxygen ion stream between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081 has a backward moving speed. When the gas containing the substances to be treated flows into the anode tube 5084 from front to back, the oxygen ions with negative charges are combined with the substances to be treated in the process of moving towards the anode 5082 of the dust removal electric field and moving backwards, and because the oxygen ions have backward moving speed, the oxygen ions are combined with the substances to be treated, and strong collision cannot be generated between the oxygen ions and the substances to be treated, so that the larger energy consumption caused by the strong collision is avoided, the oxygen ions are easily combined with the substances to be treated, the charging efficiency of the substances to be treated in the gas is higher, further, under the action of the anode 5082 of the dust removal electric field and the anode tube 5084, more substances to be treated can be collected, and the higher dust removal efficiency of the electric field device is ensured.
In addition, as shown in fig. 13, in the present embodiment, an angle α is formed between the rear end of the anode 5084 and the rear end of the dust-removing electric field cathode 5081, and 0 ° < α ≦ 125 °, or 45 ° ≦ α ≦ 125 °, or 60 ° ≦ α ≦ 100 °, or α ≦ 90 °.
In this embodiment, the dust removing electric field anode 5082, the auxiliary electrode 5083, and the dust removing electric field cathode 5081 form a plurality of dust removing units, so as to effectively improve the dust removing efficiency of the electric field apparatus by using the plurality of dust removing units.
In this embodiment, the substance to be treated may be dust in the form of particles or other impurities to be treated.
The dc power supply in this embodiment may be a dc high voltage power supply. A discharge electric field, which is an electrostatic field, is formed between the dust removing electric field cathode 5081 and the dust removing electric field anode 5082. In the absence of the auxiliary electrode 5083, the ion flow in the electric field between the dedusting electric field cathode 5081 and the dedusting electric field anode 5082 is perpendicular to the electrode direction, and turns back and flows between the two electrodes, and the ions are consumed by turning back and forth between the electrodes. Therefore, in this embodiment, the auxiliary electrode 5083 is used to shift the relative positions of the electrodes, so that the relative imbalance between the anode 5082 of the dedusting electric field and the cathode 5081 of the dedusting electric field is formed, which causes the ion current in the electric field to deflect. In the electric field device, an auxiliary electrode 5083 forms an electric field that can provide an ion flow with directionality. The electric field device in the present embodiment is also referred to as an electric field device having an acceleration direction. The collecting rate of the particles entering the electric field along the ion flow direction is improved by nearly one time compared with the collecting rate of the particles entering the electric field along the reverse ion flow direction, so that the dust accumulation efficiency of the electric field is improved, and the power consumption of the electric field is reduced. In addition, the main reason that the dust collection efficiency of the dust collection electric field in the prior art is low is that the direction of dust entering the electric field is opposite to or perpendicular to the direction of ion flow in the electric field, so that the dust and the ion flow collide violently with each other and generate large energy consumption, and the charge efficiency is also influenced, so that the dust collection efficiency of the electric field in the prior art is reduced, and the energy consumption is increased.
When the electric field device is used for collecting dust in gas, the gas and the dust enter the electric field along the ion flow direction, so that the dust is fully charged, and the electric field consumption is low; the dust collecting efficiency of the monopole electric field can reach 99.99%. When gas and dust enter the electric field in the direction of the counter ion flow, the dust is insufficiently charged, the power consumption of the electric field is increased, and the dust collection efficiency is 40-75%. In addition, the ion flow formed by the electric field device in the embodiment is beneficial to unpowered fan fluid conveying, oxygen increasing, heat exchange and the like.
Example 18
The electric field device in this embodiment can be applied to an air dust removal system, and includes a dust removal electric field cathode 5081 and a dust removal electric field anode 5082 electrically connected to the cathode and the anode of the dc power supply, respectively, and an auxiliary electrode 5083 electrically connected to the cathode of the dc power supply. In this embodiment, the auxiliary electrode 5083 and the dedusting electric field cathode 5081 both have a negative potential and the dedusting electric field anode 5082 has a positive potential.
In this embodiment, the auxiliary electrode 5083 may be fixedly connected to the dedusting electric field cathode 5081. Thus, after the dust removal field cathode 5081 is electrically connected to the cathode of the dc power supply, the auxiliary electrode 5083 is also electrically connected to the cathode of the dc power supply. Meanwhile, the auxiliary electrode 5083 extends in the front-rear direction in the present embodiment.
In this embodiment, the dust removing electric field anode 5082 is tubular, the dust removing electric field cathode 5081 is rod-shaped, and the dust removing electric field cathode 5081 is inserted into the dust removing electric field anode 5082. In this embodiment, the auxiliary electrode 5083 is also in the form of a rod, and the auxiliary electrode 5083 and the dust-removing field cathode 5081 constitute a cathode rod. The front end of the cathode rod is projected forward beyond the front end of the dust-removing field anode 5082, and the portion of the cathode rod projected forward beyond the dust-removing field anode 5082 is the auxiliary electrode 5083. That is, in this embodiment, the dust removal electric field anode 5082 and the dust removal electric field cathode 5081 have the same length, and the dust removal electric field anode 5082 and the dust removal electric field cathode 5081 are opposite to each other in position in the front-rear direction; the auxiliary electrode 5083 is located in front of the dedusting electric field anode 5082 and the dedusting electric field cathode 5081. Thus, an auxiliary electric field is formed between the auxiliary electrode 5083 and the dedusting electric field anode 5082, and the auxiliary electric field applies a backward force to the negatively charged oxygen ion stream between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081, so that the negatively charged oxygen ion stream between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081 has a backward moving speed. When the gas containing the substances to be treated flows into the tubular dedusting electric field anode 5082 from front to back, the negatively charged oxygen ions are combined with the substances to be treated in the process of moving towards the dedusting electric field anode 5082 and backwards, and because the oxygen ions have backward moving speed, the oxygen ions are combined with the substances to be treated, and strong collision cannot be generated between the oxygen ions and the substances to be treated, so that the larger energy consumption caused by strong collision is avoided, the oxygen ions are easily combined with the substances to be treated, the charge efficiency of the substances to be treated in the gas is higher, and further, under the action of the dedusting electric field anode 5082, more substances to be treated can be collected, and the higher dedusting efficiency of the electric field device is ensured.
In this embodiment, the dust removing electric field anode 5082, the auxiliary electrode 5083, and the dust removing electric field cathode 5081 form a plurality of dust removing units, so as to effectively improve the dust removing efficiency of the electric field apparatus by using the plurality of dust removing units.
In this embodiment, the substance to be treated may be dust in the form of particles or other impurities to be treated.
Example 19
As shown in fig. 14, the electric field device of the present embodiment may be applied to an air dust removing system, and the auxiliary electrode 5083 extends in the left-right direction. In this embodiment, the length direction of the auxiliary electrode 5083 is different from the length direction of the dust removing electric field anode 5082 and the dust removing electric field cathode 5081. And the auxiliary electrode 5083 may be specifically perpendicular to the dedusting electric field anode 5082.
In this embodiment, the cathode 5081 and the anode 5082 of the dust removing electric field are electrically connected to the cathode and the anode of the dc power supply, respectively, and the auxiliary electrode 5083 is electrically connected to the anode of the dc power supply. In this embodiment, the dedusting electric field cathode 5081 has a negative potential, and the dedusting electric field anode 5082 and the auxiliary electrode 5083 each have a positive potential.
As shown in fig. 14, in the present embodiment, the dust-removing field cathode 5081 and the dust-removing field anode 5082 are opposed to each other in the front-rear direction, and the auxiliary electrode 5083 is located behind the dust-removing field anode 5082 and the dust-removing field cathode 5081. Thus, an auxiliary electric field is formed between the auxiliary electrode 5083 and the dedusting electric field cathode 5081, and the auxiliary electric field applies a backward force to the negatively charged oxygen ion stream between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081, so that the negatively charged oxygen ion stream between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081 has a backward moving speed. When gas containing substances to be treated flows into an electric field between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081 from front to back, oxygen ions with negative charges are combined with the substances to be treated in the process of moving towards the dedusting electric field anode 5082 and backwards, and the oxygen ions have backward moving speed, so that the oxygen ions are combined with the substances to be treated, strong collision cannot be generated between the oxygen ions and the substances to be treated, and therefore, the situation that the energy consumption is large due to strong collision is avoided, the oxygen ions are easily combined with the substances to be treated, the charging efficiency of the substances to be treated in the gas is high, further, under the action of the dedusting electric field anode 5082, more substances to be treated can be collected, and the dedusting efficiency of the electric field device is high.
Example 20
As shown in fig. 15, the electric field device in this embodiment may be applied to an air dust removing system, and the auxiliary electrode 5083 extends in the left-right direction. In this embodiment, the length direction of the auxiliary electrode 5083 is different from the length direction of the dust removing electric field anode 5082 and the dust removing electric field cathode 5081. And the auxiliary electrode 5083 may be specifically perpendicular to the dedusting electric field cathode 5081.
In this embodiment, the cathode 5081 and the anode 5082 of the dust removing electric field are electrically connected to the cathode and the anode of the dc power supply, respectively, and the auxiliary electrode 5083 is electrically connected to the cathode of the dc power supply. In this embodiment, the dedusting electric field cathode 5081 and the auxiliary electrode 5083 both have a negative potential, and the dedusting electric field anode 5082 has a positive potential.
As shown in fig. 15, in the present embodiment, the dust-removing field cathode 5081 and the dust-removing field anode 5082 are opposed to each other in the front-rear direction, and the auxiliary electrode 5083 is located in front of the dust-removing field anode 5082 and the dust-removing field cathode 5081. Thus, an auxiliary electric field is formed between the auxiliary electrode 5083 and the dedusting electric field anode 5082, and the auxiliary electric field applies a backward force to the negatively charged oxygen ion stream between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081, so that the negatively charged oxygen ion stream between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081 has a backward moving speed. When gas containing substances to be treated flows into an electric field between the dedusting electric field anode 5082 and the dedusting electric field cathode 5081 from front to back, oxygen ions with negative charges are combined with the substances to be treated in the process of moving towards the dedusting electric field anode 5082 and backwards, and the oxygen ions have backward moving speed, so that the oxygen ions are combined with the substances to be treated, strong collision cannot be generated between the oxygen ions and the substances to be treated, and therefore, the situation that the energy consumption is large due to strong collision is avoided, the oxygen ions are easily combined with the substances to be treated, the charging efficiency of the substances to be treated in the gas is high, further, under the action of the dedusting electric field anode 5082, more substances to be treated can be collected, and the high dedusting efficiency of the electric field device is guaranteed.
Example 21
The air dust removing system in this embodiment comprises the electric field device in the above embodiments 17, 18, 19, or 20. The air needs to flow through the electric field device first to utilize the electric field device to remove dust waiting for processing substance in the air effectively, so as to ensure that the air is cleaner and the impurities such as dust are less.
EXAMPLE 22 (front electrode)
As shown in fig. 16, the present embodiment provides an electric field device, which includes an electric field device inlet 3085, a flow channel 3086, an electric field flow channel 3087, and an electric field device outlet 3088, which are sequentially communicated, wherein a front electrode 3083 is installed in the flow channel 3086, a ratio of a cross-sectional area of the front electrode 3083 to a cross-sectional area of the flow channel 3086 is 99% to 10%, the electric field device further includes a dust removal electric field cathode 3081 and a dust removal electric field anode 3082, and the electric field flow channel 3087 is located between the dust removal electric field cathode 3081 and the dust removal electric field anode 3082. The working principle of the electric field device of the invention is as follows: the gas containing pollutants enters the flow channel 3086 through the inlet 3085 of the electric field device, the prepositive electrode 3083 arranged in the flow channel 3086 conducts electrons to partial pollutants, partial pollutants are charged, after the pollutants enter the electric field flow channel 3087 from the flow channel 3086, the dust removing electric field anode 3082 applies attraction to the charged pollutants, the charged pollutants move towards the dust removing electric field anode 3082 until the partial pollutants are attached to the dust removing electric field anode 3082, meanwhile, an ionization dust removing electric field is formed between the dust removing electric field cathode 3081 and the dust removing electric field anode 3082 in the electric field flow channel 3087, the ionization dust removing electric field enables the other part of uncharged pollutants to be charged, so the other part of pollutants are also applied with the attraction applied by the dust removing electric field anode 3082 after being charged and are finally attached to the dust removing electric field anode 3082, thereby the electric field device is utilized to enable the pollutants to be charged more efficiently and charged more fully, further ensuring that the dedusting electric field anode 3082 can collect more pollutants and ensuring that the electric field device of the invention has higher pollutant collecting efficiency.
The cross-sectional area of the pre-electrode 3083 refers to the sum of the areas of the pre-electrode 3083 along the solid portion of the cross-section. In addition, the ratio of the cross-sectional area of the front electrode 3083 to the cross-sectional area of the flow channel 3086 can be 99% to 10%, or 90% to 10%, or 80% to 20%, or 70% to 30%, or 60% to 40%, or 50%.
As shown in fig. 16, in the present embodiment, the front electrode 3083 and the dedusting electric field cathode 3081 are both electrically connected to the cathode of the dc power supply, and the dedusting electric field anode 3082 is electrically connected to the anode of the dc power supply. In this embodiment, the pre-electrode 3083 and the dedusting electric field cathode 3081 both have negative potentials, and the dedusting electric field anode 3082 has a positive potential.
As shown in fig. 16, the front electrode 3083 in the present embodiment may be a mesh. Thus, when the gas flows through the flow channel 3086, the gas and the pollutants can flow through the front electrode 3083 conveniently by using the net-shaped structure of the front electrode 3083, and the pollutants in the gas can be more fully contacted with the front electrode 3083, so that the front electrode 3083 can conduct electrons to more pollutants, and the charging efficiency of the pollutants is higher.
As shown in fig. 16, in the present embodiment, the dust-removing electric field anode 3082 has a tubular shape, the dust-removing electric field cathode 3081 has a rod shape, and the dust-removing electric field cathode 3081 is inserted into the dust-removing electric field anode 3082. In this embodiment, the anode 3082 and the cathode 3081 are asymmetric. When the gas flows into the ionization electric field formed between the dedusting electric field cathode 3081 and the dedusting electric field anode 3082, the pollutants are charged, and under the action of the attraction force exerted by the dedusting electric field anode 3082, the charged pollutants are collected on the inner wall of the dedusting electric field anode 3082.
In addition, as shown in fig. 16, in the present embodiment, both the dust-removal field anode 3082 and the dust-removal field cathode 3081 extend in the front-rear direction, and the front end of the dust-removal field anode 3082 is located forward of the front end of the dust-removal field cathode 3081 in the front-rear direction. As shown in fig. 16, the rear end of the dust-removing field anode 3082 is located behind the rear end of the dust-removing field cathode 3081 in the front-rear direction. In this embodiment, the length of the dust-removal electric field anode 3082 in the front-rear direction is longer, so that the area of the adsorption surface on the inner wall of the dust-removal electric field anode 3082 is larger, the attraction force to the pollutants with negative potential is larger, and more pollutants can be collected.
As shown in fig. 16, the cathode 3081 and the anode 3082 of the dust-removing electric field in this embodiment form a plurality of ionization units, so that more pollutants can be collected by the ionization units, and the electric field apparatus has a stronger pollutant collecting capability and a higher collecting efficiency.
In this embodiment, the contaminants include common dust with low conductivity, and metal dust, mist, aerosol with high conductivity. The collecting process of the electric field device in the embodiment for the common dust with weaker conductivity and the pollutants with stronger conductivity in the gas is as follows: when gas flows into the flow channel 3086 through the inlet 3085 of the electric field device, pollutants such as metal dust, fog drops or aerosol with high conductivity in the gas are directly negatively charged when contacting the front electrode 3083 or when the distance between the gas and the front electrode 3083 reaches a certain range, then all the pollutants enter the electric field flow channel 3087 along with the gas flow, the dust removal electric field anode 3082 exerts attraction force on the negatively charged metal dust, fog drops or aerosol and collects the partial pollutants, meanwhile, the dust removal electric field anode 3082 and the dust removal electric field cathode 3081 form an ionization electric field, the ionization electric field obtains oxygen ions through ionizing oxygen in the gas, the negatively charged oxygen ions are combined with the common dust to negatively charge the common dust, the dust removal electric field anode 3082 exerts attraction force on the negatively charged dust and collects the partial pollutants, and therefore the pollutants with high conductivity and low conductivity in the gas are collected, and the electric field device can collect substances in a wider variety and has stronger collection capability.
The dust removing electric field cathode 3081 described above in this embodiment is also referred to as a corona charging electrode. The direct current power supply is specifically a direct current high voltage power supply. A direct current high voltage is introduced between the front electrode 3083 and the dedusting electric field anode 3082 to form a conductive loop; and a direct current high voltage is introduced between the dedusting electric field cathode 3081 and the dedusting electric field anode 3082 to form an ionization discharge corona electric field. The pre-electrode 3083 is a densely distributed conductor in this embodiment. When dust which is easy to be charged passes through the front electrode 3083, electrons are directly given to the dust by the front electrode 3083, and the dust is charged and then adsorbed by the dust removing electric field anode 3082 with different poles; meanwhile, the uncharged dust passes through an ionization region formed by the dust removing electric field cathode 3081 and the dust removing electric field anode 3082, ionized oxygen formed in the ionization region charges electrons to the dust, and thus the dust is charged continuously and adsorbed by the dust removing electric field anode 3082 with different polarity.
The electric field device in this embodiment can form two or more electrifying modes. For example, under the condition that oxygen in the gas is sufficient, the pollutants can be charged by utilizing an ionization discharge corona electric field formed between the dedusting electric field cathode 3081 and the dedusting electric field anode 3082 to ionize oxygen, and then the pollutants are collected by utilizing the dedusting electric field anode 3082; when the oxygen content in the gas is too low or in an oxygen-free state or the pollutants are conductive dust fog and the like, the pollutants are directly electrified by the front electrode 3083, and are adsorbed by the dedusting electric field anode 3082 after being fully electrified. In the embodiment, the electric fields of the two charging modes are adopted, so that high-resistance dust which is easy to charge and low-resistance metal dust, aerosol, liquid mist and the like which are easy to electrify can be collected at the same time. The two electrifying modes are used simultaneously, and the application range of the electric field is expanded.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention. For example, in the present application, "air" has a broad definition and includes all gases, such as exhaust gases, waste gases. Therefore, the scope of the claims of the present application (e.g., "air dust removal system", "air electric field dust removal method", "air aeration method", "air dust removal method") shall include all "gases".

Claims (9)

  1. An electric field dust removal method is characterized in that: the method comprises the following steps:
    selecting the diameter of the cathode of the dedusting electric field to be 1-3 mm, and the inter-polar distance between the anode of the dedusting electric field and the cathode of the dedusting electric field to be 2.5-139.9 mm; the ratio of the dust deposition area of the anode of the dust removal electric field to the discharge area of the cathode of the dust removal electric field is 1.667: 1-1680: 1.
  2. the method of reducing electric field coupling for dust extraction of claim 1, wherein: and selecting the ratio of the dust collection area of the anode of the dedusting electric field to the discharge area of the cathode of the dedusting electric field.
  3. The method of reducing electric field coupling for dust extraction of claim 2, wherein: selecting the ratio of the dust deposition area of the anode of the dust removal electric field to the discharge area of the cathode of the dust removal electric field to be 1.667: 1-1680: 1.
  4. the method of reducing electric field coupling for dust extraction of claim 2, wherein: selecting the ratio of the dust deposition area of the dust removal electric field anode to the discharge area of the dust removal electric field cathode to be 6.67: 1-56.67: 1.
  5. the method of reducing electric field coupling in dust removal according to any one of claims 1 to 4, wherein: the diameter of the cathode of the dust removing electric field is 1-3 mm, and the distance between the anode of the dust removing electric field and the cathode of the dust removing electric field is 2.5-139.9 mm; the ratio of the dust deposition area of the anode of the dust removal electric field to the discharge area of the cathode of the dust removal electric field is 1.667: 1-1680: 1.
  6. the method of reducing electric field coupling in dust removal according to any one of claims 1 to 5, wherein: and selecting the polar distance between the anode of the dust removing electric field and the cathode of the dust removing electric field to be less than 150 mm.
  7. The method of reducing electric field coupling in dust removal according to any one of claims 1 to 5, wherein: and selecting the interpolar distance between the anode of the dust removal electric field and the cathode of the dust removal electric field to be 2.5-139.9 mm.
  8. The method of reducing electric field coupling in dust removal according to any one of claims 1 to 5, wherein: and selecting the distance between the anode of the dust removal electric field and the cathode of the dust removal electric field to be 5-100 mm.
  9. The method of reducing electric field coupling for dust extraction of any one of claims 1-8, wherein: the size of the dust removal electric field anode or/and the dust removal electric field cathode is selected to ensure that the electric field coupling frequency is less than or equal to 3.
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