CN204735342U - Electric dust collector - Google Patents
Electric dust collector Download PDFInfo
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- CN204735342U CN204735342U CN201520017078.4U CN201520017078U CN204735342U CN 204735342 U CN204735342 U CN 204735342U CN 201520017078 U CN201520017078 U CN 201520017078U CN 204735342 U CN204735342 U CN 204735342U
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Abstract
The utility model discloses an electric dust collector, it includes electric field (5) that one or more arranged along airflow direction, electric field (5) all include a plurality of power supply subregion (6) of arranging along airflow direction, each power supply subregion (6) all includes: one or more anode plate (2) for the dust particle of adsorption band negative electrical charge, one or many negative pole line (3) for the dust particle of adsorption band positive charge, power supply unit (4), the anodal of power supply unit (4) is connected anode plate (2), the negative pole of power supply unit (4) is connected negative pole line (3), power supply unit (4) power supply makes form the electric field between anode plate (2) and negative pole line (3). The utility model discloses electric dust collector is through dividing the electric field into a plurality of power supply subregions to supply power respectively, reduced the electric field width of electric field, can improve single the inhomogeneous phenomenon of electric field corona current, improve the dust collection efficiency.
Description
Technical field
The utility model relates to a kind of industrial dust collector, particularly, relates to a kind of electric field width reducing power supply zone, improves the electric cleaner running electric-field intensity.
Background technology
The new environmental protection standard of China specifies that all coal-burning power plants dust emission limit value is 30mg/Nm
3below.Existing electric cleaner is difficult to meet this requirement mostly, needs transformation badly.Common remodeling method has increases electric field quantity, improve than specific collection area, change power supply etc.Because the restriction of this concentration is little, dust mostly is fine particle.Above-mentioned remodeling method usually conbined usage, most of effect is undesirable.Its main cause is that power supply is difficult to mate with electric cleaner load, and energy can not inject effectively, makes low being not enough to of electric-field intensity maintain higher dust-collecting efficiency.
Theoretical according to the efficiency of dust collection of electric precipitation index, the basic method improving Electric Scrubber Efficiency in electric precipitation transformation improves the operation electric-field intensity in electric precipitation.
Existing electric cleaner mostly is three, four or five electric field binary channels, and each electric field is respectively by a Power supply.In the electric field of smoke inlet, front end particle load is large, and corona current is suppressed; And rear end particle load reduces, corona current is raised, and the power level that can inject also increases thereupon.But the discharge energy injected in single electric field, is limited by front end entirely, be difficult to increase.Cause corona current in single electric field uneven, the power of injection is restricted, thus affects efficiency of dust collection.
Utility model content
The purpose of this utility model is to provide a kind of electric cleaner, can avoid the corona current non-uniform phenomenon of single electric field.
To achieve these goals, the utility model provides a kind of electric cleaner, it comprises one or more electric field along airflow direction arrangement, described electric field includes multiple power supply zone along airflow direction arrangement, each described power supply zone includes: one or more positive plate, for adsorbing electronegative grit; One or more cathode line, for adsorbing positively charged grit; Supply unit, the positive pole of described supply unit connects described positive plate, and the negative pole of described supply unit connects described cathode line, described means of power, makes to form electric field between described positive plate and cathode line.
Preferably, described supply unit is three-phase alternating-current supply.
Preferably, the plus earth of described supply unit.
Preferably, described electric cleaner also comprises: housing, and described electric field is all placed in described housing, and described housing comprises: arrival end, is arranged at one end of described housing, for flowing into flue gas; The port of export, is arranged at the other end of described housing, for flowing out flue gas.
Preferably, described power supply zone also comprises: dedusting and flapping device, is arranged at the top of described housing, for rapping, the grit collected in described power supply zone is fallen.
Preferably, described dedusting and flapping device is electromagnetic type dedusting and flapping device.
The utility model electric cleaner by electric field is divided into multiple power supply zone, and is powered respectively, reduces the electric field width of power supply zone, improves the phenomenon that single electric field corona current is uneven, can improve efficiency of dust collection.
The utility model adopts three-phase alternating-current supply, and adjustable three-phase ac transformer wherein to improve secondary output voltage, thus increases substantially the ion concentration in the plate current density of electric precipitation or electric precipitation, improves the charged of fine particle and efficiency of dust collection.And under the condition keeping higher average voltage and field intensity, the current density of each power supply zone can be optimized, and can efficient deashing, reduce secondary fly-up, raising dust collection efficiency.Improve power supply wave shape parameter by adjustment three-phase ac transformer, the crest voltage of operation is almost identical with average voltage, thus avoids the spark discharge that electric precipitation occurs because of high crest voltage, thus improves efficiency of dust collection.
Each power supply zone of the present utility model can arrange electromagnetic type dedusting and flapping device as required, gets final product vibration dust-cleaning after powered up, easy for installation, simple to operate.
Other features and advantages of the utility model are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for description, is used from explanation the utility model, but does not form restriction of the present utility model with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the structural representation of the existing electric cleaner based on two electric fields.
Fig. 2 is the structural representation of the utility model electric cleaner based on two electric fields.
Fig. 3 is the structural representation of the existing electric cleaner based on four electric fields.
Fig. 4 is the structural representation of the utility model electric cleaner based on four electric fields.
Fig. 5 is the structural representation of the utility model power supply zone.
Description of reference numerals
1 housing
2 positive plates
3 cathode line
4 supply units
5 electric fields
6 power supply zones
7 discharge channels
8 arrival ends
9 ports of export.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
The utility model electric cleaner comprises housing 1, and one end of described housing 1 is provided with arrival end 8, and for flowing into flue gas, the other end of described housing 1 is provided with the port of export 9, for flowing out flue gas.Be equipped with one or more electric field 5 along airflow direction arrangement in described housing 1, described electric field 5 includes multiple power supply zone 6 along airflow direction arrangement.Each described power supply zone 6 includes one or more positive plate 2, for adsorbing electronegative grit; One or more cathode line 3, for adsorbing positively charged grit; Supply unit 4, the positive pole of described supply unit 4 connects described positive plate 2, and the negative pole of described supply unit 4 connects described cathode line 3, and described supply unit 4 is powered, and makes to form electric field (as shown in Figure 5) between described positive plate 2 and cathode line 3.Described supply unit 4 is powered, and provides high pressure ionization anion, the plus earth of described supply unit 4.
Along some coaxial anode plates 2 and the cathode line 3 of airflow direction, be called a discharge channel 7.
The utility model electric cleaner can arrange multiple electric field 5, is divided into multiple power supply zone 6 in each electric field 5.Be illustrated in figure 1 an embodiment of existing electric cleaner, wherein, in the electric cleaner shown in Fig. 1, electric field 5 is provided with 2 altogether; And Figure 2 shows that an embodiment of the utility model electric cleaner, wherein, in the electric cleaner shown in Fig. 2, electric field 5 is provided with 2 altogether, and is also provided with 2 power supply zones in each electric field 5.Be illustrated in figure 3 another embodiment of existing electric cleaner, wherein, in the electric cleaner shown in Fig. 3, electric field 5 is provided with 4 altogether; Figure 4 shows that another embodiment of the utility model electric cleaner, wherein, the electric field 5 in the electric cleaner shown in Fig. 4 is provided with 4 altogether, and is provided with 2 power supply zones 6 in each electric field 5, but not as limit, the quantity of electric field, power supply zone and discharge channel can be set as required.
Be provided with supply unit 4 in each power supply zone 6, thus can form little electric field, and reduce along the electric field width of airflow direction, relative to original electric field, electric discharge is more even, and working voltage or electric-field intensity improve, thus can improve efficiency of dust collection.
As depicted in figs. 1 and 2 (or shown in Fig. 3 with Fig. 4): the electric field width of (when electric field quantity is identical) power supply zone described in the utility model reduces, supply voltage improves, and can improve the phenomenon that single electric field corona current is uneven to a great extent.As shown in Figures 2 and 3, (in the utility model electric cleaner, power supply zone is identical with the electric field quantity of existing electric cleaner, namely when supply unit quantity is identical) volume of the utility model electric cleaner is little, floor space is little, production cost is low, and supply voltage is high, efficiency of dust collection is high.
Wherein, described supply unit 4 is three-phase alternating-current supply, the secondary output voltage of adjustable three-phase ac transformer wherein.The working voltage of 5 ~ 20kV can be improved compared to traditional single-phase high voltage power supply, the utility model supply unit 4 can be powered to electric cleaner under close to the average voltage of crest voltage, the electric current of input is increased substantially, and power factor can be promoted to about 95% from about 70%.Not only can improve the utilization rate of electric energy, avoid the waste of electric energy, the efficiency of dust collection to fine particle can also be improved.Electric field width after subregion reduces, and by adjustment three-phase ac transformer, under the condition keeping higher average voltage and field intensity, can optimize the current density of each power supply zone, can efficient deashing, reduction secondary fly-up.Improve power supply wave shape parameter by adjustment three-phase ac transformer, the crest voltage of operation is almost identical with average voltage, thus avoids the spark discharge that electric precipitation occurs because of high crest voltage, thus improves efficiency of dust collection.
Described supply unit 4 can also be conventional single-phase power supply, intermediate frequency power supply, high frequency electric source, three phase mains, and other any electric cleaner power supply or any combination.
In addition, the supply unit 5 of each power supply zone 6 arranges different, simultaneously can supporting different cathode line 3, takes difference power supply, be beneficial to the problem of process coal and air quantity change for variable grain thing particle diameter and load.Such as, adjustment supply voltage, to make near power supply zone 6 average field-strength at the utility model electric cleaner arrival end 8 place and electric current, all close to critical value, to improve load of dust remove; While the power supply zone 6 at the electric cleaner port of export 9 place maintains higher average field-strength, reduce corona current, improve trapping fine particle and low resistivity particle.
Such as, when electric cleaner have 4 electric fields and non-subregion time, then the exhaust particulate thing content trapped is 70mg/m
3.And the utility model electric cleaner is by average for its electric field subregion, after transforming 8 power supply zones as, the average grain substrate concentration of trapping is 10 ~ 20mg/m
3.And 8 power supply zones adopt all separately three-phase ac transformer to power, the running current of the first to the 8th power supply zone and voltage are according to the operating condition optimizing regulation of power plant.Meanwhile, have the utility model electric cleaner of 8 power supply zones for the former electric cleaner device with 8 electric fields, floor space is little, and supply voltage is high, and production cost is low.Because working voltage is high, there is very high collection efficiency to PM2.5, electric precipitation outlet PM2.5 discharge can be realized lower than 2mg/m
3.
Wherein, described power supply zone 6 also comprises the dedusting and flapping device (not shown) being arranged at described housing 1 top, by rapping, the grit collected in described power supply zone 6 is fallen.In the present embodiment, described dedusting and flapping device is electromagnetic type dedusting and flapping device.Get final product vibration dust-cleaning after powered up, easy for installation, simple to operate.Each described dedusting and flapping device operating principle is: the shaking cycle near electric cleaner arrival end is short, runs continuously, and the shaking cycle near the electric cleaner port of export is long, and interval is run.
The utility model electric cleaner also has the following advantages:
(1) electric precipitation outlet low emission also can be realized when electric precipitation specific dust collection area is less.
(2) the electric precipitation transformation cycle is short, expense is low, can steady in a long-term run.
(3) fine particle because of the electric precipitation port of export is charged, and electric precipitation can improve and the collaborative dust-collecting efficiency of desulfurizing tower to fine particle, realizes 5mg/m in desulfurizing tower outlet
3discharge.
Below preferred embodiment of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (6)
1. an electric cleaner, it comprises one or more electric field (5) along airflow direction arrangement, it is characterized in that, described electric field (5) includes multiple power supply zone (6) along airflow direction arrangement, and each described power supply zone (6) includes:
One or more positive plate (2), for adsorbing electronegative grit;
One or more cathode line (3), for adsorbing positively charged grit;
Supply unit (4), the positive pole of described supply unit (4) connects described positive plate (2), and the negative pole of described supply unit (4) connects described cathode line (3); Described supply unit (4) is powered, and makes to form electric field between described positive plate (2) and cathode line (3).
2. electric cleaner according to claim 1, is characterized in that, described supply unit (4) is three-phase alternating-current supply.
3. electric cleaner according to claim 1, is characterized in that, the plus earth of described supply unit (4).
4. electric cleaner according to claim 1, is characterized in that, described electric cleaner also comprises:
Housing (1), described electric field (5) is all placed in described housing (1), and described housing (1) comprising:
Arrival end (8), is arranged at one end of described housing (1), for flowing into flue gas;
The port of export (9), is arranged at the other end of described housing (1), for flowing out flue gas.
5. electric cleaner according to claim 4, is characterized in that, described power supply zone (6) also comprises:
Dedusting and flapping device, is arranged at the top of described housing (1), for rapping, the grit collected in described power supply zone (6) is fallen.
6. electric cleaner according to claim 5, is characterized in that, described dedusting and flapping device is electromagnetic type dedusting and flapping device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520017078.4U CN204735342U (en) | 2015-01-09 | 2015-01-09 | Electric dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520017078.4U CN204735342U (en) | 2015-01-09 | 2015-01-09 | Electric dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204735342U true CN204735342U (en) | 2015-11-04 |
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ID=54417103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520017078.4U Active CN204735342U (en) | 2015-01-09 | 2015-01-09 | Electric dust collector |
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|---|---|
| CN (1) | CN204735342U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111334A (en) * | 2016-06-27 | 2016-11-16 | 许玉蕊 | Cavity electrodes electromagnetism ash-cleaning type electric precipitation |
| CN107282304A (en) * | 2017-07-13 | 2017-10-24 | 福建欣隆环保股份有限公司 | A kind of horizontal asymmetrical subregion inversion high-efficiency wet electric cleaner |
| CN108380392A (en) * | 2018-04-27 | 2018-08-10 | 山西兰花科技创业股份有限公司 | A method of for improving three industrial wastes mixed combustion furnace Electric Scrubber Efficiency |
-
2015
- 2015-01-09 CN CN201520017078.4U patent/CN204735342U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111334A (en) * | 2016-06-27 | 2016-11-16 | 许玉蕊 | Cavity electrodes electromagnetism ash-cleaning type electric precipitation |
| CN107282304A (en) * | 2017-07-13 | 2017-10-24 | 福建欣隆环保股份有限公司 | A kind of horizontal asymmetrical subregion inversion high-efficiency wet electric cleaner |
| CN108380392A (en) * | 2018-04-27 | 2018-08-10 | 山西兰花科技创业股份有限公司 | A method of for improving three industrial wastes mixed combustion furnace Electric Scrubber Efficiency |
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| GR01 | Patent grant |