CN210814612U - Pulse discharge plasma composite alkali washing spraying deodorization device - Google Patents
Pulse discharge plasma composite alkali washing spraying deodorization device Download PDFInfo
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- CN210814612U CN210814612U CN201921432984.5U CN201921432984U CN210814612U CN 210814612 U CN210814612 U CN 210814612U CN 201921432984 U CN201921432984 U CN 201921432984U CN 210814612 U CN210814612 U CN 210814612U
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Abstract
The utility model belongs to the technical field of waste gas treatment, in particular to a pulse discharge plasma composite alkaline washing spray deodorizing device, which comprises a waste gas collecting cover, a plasma reaction mechanism, an alkaline washing tower, a dehydrator, a main fan and a discharge chimney; the waste gas collecting cover is connected with an air inlet end of the plasma reaction mechanism through a pipeline, an air outlet end of the plasma reaction mechanism is connected with an air inlet end of the alkaline washing tower through a pipeline, an air outlet end of the alkaline washing tower is connected with an air inlet end of the water eliminator through a pipeline, an air outlet end of the water eliminator is connected with an air inlet end of the main fan through a pipeline, an air outlet end of the main fan is connected with an air inlet end of the discharge chimney, high-energy electrons generated by pulse discharge decompose and oxidize malodorous gas and organic pollutants in the waste gas into oxygen-containing micromolecular substances with strong water solubility, and the oxygen-containing micromolecular substances are subjected to alkaline washing spray absorption treatment to reach the standard for discharge. The whole process is efficient and has no secondary pollution.
Description
Technical Field
The utility model belongs to the technical field of exhaust-gas treatment, concretely relates to pulse discharge plasma compound alkali washing sprays deodorizing device.
Background
Although economic development improves the living standard of people, serious environmental problems are brought, such as water pollution, solid waste pollution, odor pollution and the like. Since malodor is a gaseous substance which stimulates the olfactory organs to cause people's unpleasantness and damages the living environment, it is essentially a sense public nuisance, which pollutes the environment and harms the health of human body, and its influence has a wide range and sustainability, and is receiving increasing attention from people and governments.
New emission standard for malodorous pollutants DB31/1025-2016 was performed in Shanghai city of 2 months in 2017. The exhaust funnel with the odor concentration of 15m is reduced to 500 dimensionless from the original international 2000 dimensionless concentration; the characteristic pollution is increased from the original 8 items to 22 items. The local standard acquisition manuscripts of other provinces such as Ningxia, Shandong, Jiangsu and the like strive to get close to the upper sea label. The requirement for controlling the odor is getting stricter, and the emission not only reaches the national standard but also reaches the national standard (no odor and odor complaint). In 12 months in 2018, revised observations published by the ministry of ecological environmental protection in emission Standard of malodorous pollutants (GB-14554-93) put forward stricter execution standards.
With the increasing emission standard, the traditional malodorous gas treatment methods (masking method, dilution diffusion method, adsorption method, washing method, etc.) have the problems of incomplete purification, single type of purified gas, secondary pollution, etc., and can not meet the treatment requirements. Although RTO (thermal combustion) and RCO (catalytic thermal combustion) can completely burn and remove organic matters, the energy consumption is particularly large, and the method is only suitable for high-concentration odor. However, most of the odor comes from sewage plants, sewage pump stations, solid waste treatment plants, pharmaceutical plants, steel plants, chemical fiber plants, feed and fertilizer processing plants and the like, the concentration of the odor is generally low, and the odor is difficult to treat by a combustion method.
Plasma technology has attracted more and more attention as a new type of deodorization technology. At present, most of the plasma technologies on the market adopt a high-frequency direct-current power supply for power supply, and the technology is only simple grafting and simulation of an electrostatic dust removal technology and does not reach the voltage energy level for generating plasma, so that the efficiency is low, and the technology is basically ineffective for deodorizing and removing VOCs. Because the direct current power supply technology has good electrostatic adsorption, the polar plate polar line has a large amount of dust collection packages after the equipment runs for a period of time, and needs to be cleaned and descaled in time. Another plasma technique increases the average discharge voltage by adding an insulating layer to the discharge space to generate more plasma, which we call dielectric barrier discharge. The essence is that the space discharge voltage is improved by changing the structure of the reactor, and the space discharge voltage is not broken through by the form of power supply. Compared with the direct current common discharge, the energy density is greatly improved, and high plasma can be generated. However, in general medium barrier discharge, the discharge distance is 2-3mm, the discharge space is narrow, dust and water vapor are feared, and the requirement on gas source is strict, so that the gas needs to be pretreated, and the long-term reliable operation of equipment can be ensured after dust removal and dehumidification.
SUMMERY OF THE UTILITY MODEL
The prior art is difficult to satisfy people's needs, in order to solve the above-mentioned problem that exists, the utility model provides a pulse discharge plasma compound alkali wash sprays deodorizing device.
In order to achieve the above object, the utility model provides a following technical scheme:
a pulse discharge plasma composite alkaline washing spray deodorization device comprises a waste gas collecting cover, a plasma reaction mechanism, an alkaline washing tower, a dehydrator, a main fan and a discharge chimney; the waste gas collecting cover is connected with the air inlet end of the plasma reaction mechanism through a pipeline, the exhaust end of the plasma reaction mechanism is connected with the air inlet end of the alkaline washing tower through a pipeline, the exhaust end of the alkaline washing tower is connected with the air inlet end of the water remover through a pipeline, the exhaust end of the water remover is connected with the air inlet end of the main fan through a pipeline, and the exhaust end of the main fan is connected with the air inlet end of the discharge chimney;
the plasma reaction mechanism comprises a reaction box, a cathode wire, an anode cylinder and insulating columns are arranged in the reaction box, connecting rods connected with the insulating columns which are parallel to each other are arranged between the insulating columns, two ends of the cathode wire are connected with the connecting rods, and the anode cylinder is sleeved on the outer side of the cathode wire;
the dehydrator comprises a dehydrating tank, one side of the bottom of the dehydrating tank is provided with an air inlet, the upper end of the dehydrating tank is provided with an air outlet, and two side walls in the dehydrating tank are respectively provided with a plurality of guide plates which are mutually distributed in a dog-tooth staggered manner;
the plasma reaction mechanism further comprises a pulse discharge plasma power supply, and the pulse discharge plasma power supply is arranged on the outer side of the reaction box.
Compared with the prior art, the beneficial effects of the utility model are that:
the reactor structure adopts a cylindrical wire large-diameter structure, so that the discharge is more uniform, the large-diameter structure is dust-proof and water-proof, and the operation is reliable;
the design of the dehydrator ensures that a large amount of supersaturated water vapor in the flue gas is intercepted and removed in the dehydrator, reduces the loss of water, can effectively lighten the running load of a fan, and avoids the phenomenon of a large amount of white fog and even floating water at the discharge port of a chimney;
the composite alkali washing and spraying technology further adsorbs partial intermediate products produced by the discharge plasma, so that the overall deodorization efficiency is improved, and secondary pollution is basically avoided;
the malodorous gas and organic pollutants in the waste gas are decomposed and oxidized into oxygen-containing micromolecular substances with strong water solubility by high-energy electrons generated by pulse discharge, and then the oxygen-containing micromolecular substances are subjected to alkali washing, spraying and absorbing treatment to reach the standard for emission. The whole process is efficient and has no secondary pollution.
Drawings
Fig. 1 is a schematic view of the overall structure provided by the present invention;
fig. 2 is a schematic view of a connection structure of a cathode wire, an anode cylinder and an insulating column in a front view according to the present invention;
FIG. 3 is a schematic view of the connection section structure of the cathode line and the anode cylinder provided by the present invention;
FIG. 4 is a schematic view of the internal structure of the dehydrator;
fig. 5 is a schematic side view of the guide plate and the collecting tank according to the present invention;
fig. 6 is a schematic view of a top view structure of a deflector provided by the present invention;
the reference numbers in the figures illustrate: 1. an exhaust gas collection hood; 2. a reaction box; 21. an insulating column; 22. an anode cylinder; 23. a cathode line; 24. a connecting rod; 3. a pulsed discharge plasma power supply; 4. a dehydrator; 41. removing the water tank; 42. a baffle; 43. an access hole; 44. a blow-off pipe; 45. an air inlet; 46. collecting tank; 47. a water baffle; 48. a communicating hole; 49. an air outlet; 5. a spray pump; 6. an alkaline washing tower; 7. a main fan; 8. and (5) discharging the chimney.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
It should be noted that, in the present invention, when an element is referred to as being "fixed" to another element, it may be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1-6, a pulse discharge plasma composite alkaline washing spray deodorizing device comprises a waste gas collecting cover 1, a plasma reaction mechanism, an alkaline washing tower 6, a dehydrator 4, a main fan 7 and a discharge chimney 8; the waste gas collecting cover 1 is connected with an air inlet end of a plasma reaction mechanism through a pipeline, an air outlet end of the plasma reaction mechanism is connected with an air inlet end of an alkaline washing tower 6 through a pipeline, an air outlet end of the alkaline washing tower 6 is connected with an air inlet end of a water remover 4 through a pipeline, an air outlet end of the water remover 4 is connected with an air inlet end of a main fan 7 through a pipeline, and an air outlet end of the main fan 7 is connected with an air inlet end of a discharge chimney 8.
Further, the plasma reaction mechanism comprises a reaction box 2, a plurality of cathode wires 23, anode cylinders 22 and insulating columns 21 are arranged in the reaction box 2, the number of the insulating columns 21 is 4, connecting rods 24 which are connected are arranged between the insulating columns 21 which are parallel to each other, the number of the cathode wires 23 is 6, two ends of each cathode wire 23 are connected with the corresponding connecting rod 24, and the anode cylinders 22 are sleeved on the cathode wires 23;
the dehydrator 4 comprises a dehydrating tank 41, one side of the bottom of the dehydrating tank 41 is provided with an air inlet 45, the upper end of the dehydrating tank 41 is provided with an air outlet 49, and two side walls in the dehydrating tank 41 are respectively provided with a plurality of guide plates 42 which are mutually distributed in a dog-tooth staggered manner.
Further, plasma reaction mechanism still includes pulse discharge plasma power supply 3, pulse discharge plasma power supply 3 sets up in the reaction box 2 outside, pulse discharge plasma power supply 3 be nanosecond level high-voltage pulse power supply, nanosecond level high-voltage pulse power supply rated voltage can rise to more than 60 KV.
A high-power nanosecond pulse power supply discharge technology is adopted, a pulse power supply is input into a reactor in a high-voltage narrow-pulse mode, 50kV nanosecond narrow-pulse high voltage is applied to electrodes, a strong electric field is formed around the electrodes with small curvature, and electrons quickly obtain energy from the electric field to generate active particles. The pulse width of the pulse power supply is 500ns, the pulse frequency is 500pps, and the actual input power can reach 50kW, so the energy injection time is very short, the instantaneous power is very high and reaches hundreds of megawatts, and compared with a direct-current high-voltage power supply, the pulse power supply has high discharge intensity and high discharge density.
Furthermore, the electric field in the plasma reaction mechanism adopts a wire barrel type discharge structure, the discharge gap is larger, and the heteropolar distance can reach 45 mm.
Further, the cathode wire 23 is made of 316L materials and assembled, the effective length is 1-1.5 m, the insulating column 21 has the working voltage of 72KV, the insulating distance is larger than or equal to 400mm, the anode cylinder 22 is a vertical pipe section with the diameter of 108mm, the wall thickness is 2mm, the cathode wire 23 is made of saw-tooth metal sheets and assembled, 12 saw-tooth tips are arranged on each metal sheet, and the discharge gap between the cathode wire 23 and the anode cylinder 22 is 45 mm.
The discharge effect is not influenced by the extremely small amount of accumulated dust and water vapor discharged by the large-pipe-diameter structure.
Further, a spraying and cleaning mechanism can be arranged in the reaction box 2, and the spraying and cleaning mechanism adopts the combination form of the existing spraying pipe and the existing nozzle.
The spraying and cleaning mechanism can be cleaned in time, dust accumulation and wrapping are prevented, safe and reliable use is guaranteed, and manual maintenance is reduced.
Further, the guide plate 42 is corrugated, collecting grooves 46 are formed in wave troughs in the bottom of the guide plate 42, and the center of the inner portion of each collecting groove 46 is fixedly connected with the wave troughs in the bottom of the guide plate 42.
Further, the extending end of the deflector 42 is provided with a water baffle 47, and both ends of the deflector 42 at both ends of the water baffle 47 are provided with communication holes 48.
The end of the guide plate 42 is provided with a vertical water baffle 47 to improve the water blocking effect, and the design of the communication hole 48 ensures that the blocked and collected water flows into the bottom of the water removing tank 41 from the two side sections of the guide plate 42.
Further, a maintenance opening 43 is formed in one side wall of the water removal tank 41, and transparent organic glass matched with the maintenance opening 43 is arranged in the maintenance opening 43.
The access opening 43 shrouding adopt transparent organic glass to make, can observe the drainage condition of dehydrator 4 in good time.
Further, an alkaline washing liquid is stored in the alkaline washing tower 6, a spraying layer is arranged in the middle of the alkaline washing tower 6, a spraying pump 5 is arranged on one side of the alkaline washing tower, the water inlet end of the spraying pump 5 is connected with the bottom of the alkaline washing tower 6 through a pipeline, and the water discharging end of the spraying pump 5 is connected with the spraying layer through a pipeline.
Further, a drain outlet 44 is arranged on one side of the bottom of the water removing tank 41.
The utility model is used for a pulse discharge plasma composite alkali washing spraying deodorizing device,
the flue gas is collected by a waste gas collecting cover 1 and sent into a reaction box 2, under the action of a pulse discharge plasma power supply 3, a plasma region is formed in an electric field region of a plasma reaction mechanism, when the waste gas passes through the plasma region, waste gas molecules are cracked and dispersed by strong energy of plasma to form chain-broken intermediate products, the chain-broken substances react with active particles such as electrons, ions, free radicals and excited molecules generated by the plasma ionization action, most of the substances are completely oxidized to generate CO2 and H2O, part of the substances are oxidized to substances with high water solubility such as alcohols, aldehydes, organic acids and the like, the substances enter an alkaline tower 6 along with air flow, a tower kettle of the alkaline tower 6 is filled with 3-5% NaOH solution, the alkaline solution is sprayed to each spraying layer of the alkaline tower 6 through a spraying pump 5 and is sprayed out through a materialization nozzle, and residual polluting substances in the waste gas enter the alkaline tower 6, fully contacts with atomized alkaline water sprayed from the top, most pollutants are dissolved in water, and acid-base neutralization reaction is carried out to generate soluble and nonvolatile salt substances which are taken away by washing water. The purified flue gas then enters the dehydrator 4, a large amount of supersaturated water vapor in the flue gas is intercepted and removed in the dehydrator 4, and then the purified flue gas is discharged to the atmosphere through the main fan 7 and the discharge chimney 8 to reach the standard.
The dehydrator structure mainly comprises air intake 45, guide plate 42, access hole 43, drain 44, air outlet 49, the flue gas gets into except that in the water tank 41 by air intake 45, with guide plate 42 head-on collision contact, supersaturated steam in the flue gas can strike and attach to 42 guide plate with guide plate 42, form rivers after the drop of water gathering attached to guide plate 42, flow into except that water tank 41 bottom by guide plate 42 both sides limit, the water that removes water tank 41 and collect flows into the drainage by bottom drain 44, flue gas after the dewatering leaves except that water tank 41 through air outlet 49, get into next technology link. When a blockage or an abnormal condition occurs inside the dewatering tank 41, the maintenance operation can be performed by opening the maintenance opening 43.
Wherein the waste gas collecting cover 1, the alkaline washing tower 6 and the main fan 7 all adopt the prior art of wide movement.
The main chemical reactions of the pulse discharge plasma composite alkali washing spraying deodorization device in the whole process are as follows:
1) active oxygen [ O ] generation:
2) oxidation reaction of organic HC
And (3) complete oxidation:
partial oxidation:
intermediate product free radical oxidation:
intermediate product free radical oxidation:
3) decomposition of organic substances
Dehydrogenation (C-H bond cleavage) generates an intermediate free radical:
decomposition (C-C bond cleavage) to generate an intermediate free radical:
formation of oxygenates: r, or R '+ [ O ] - [ RO or R' O- [ O ] - [ O ] - [ O ] - [ O ] or R
4) Decomposition of sulfides
SO2+O*→SO3
5) Decomposition of NH3
NH+NH→N2+H2
6) Alkali washing:
2NaOH+SO2＝Na2SO3+H2O
2NaOH+SO3＝Na2SO4+H2O
2NaOH+H2S＝Na2S+2H2O
NaOH+H2S＝NaHS+H2O
NaOH+HCN＝NaCN+H2O
the basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A pulse discharge plasma composite alkaline washing spray deodorization device comprises a waste gas collecting cover, a plasma reaction mechanism, an alkaline washing tower, a dehydrator, a main fan and a discharge chimney; the waste gas collecting cover is connected with the air inlet end of the plasma reaction mechanism through a pipeline, the exhaust end of the plasma reaction mechanism is connected with the air inlet end of the alkaline washing tower through a pipeline, the exhaust end of the alkaline washing tower is connected with the air inlet end of the water remover through a pipeline, the exhaust end of the water remover is connected with the air inlet end of the main fan through a pipeline, and the exhaust end of the main fan is connected with the air inlet end of the discharge chimney;
the plasma reaction mechanism comprises a reaction box, a cathode wire, an anode cylinder and insulating columns are arranged in the reaction box, connecting rods connected with the insulating columns which are parallel to each other are arranged between the insulating columns, two ends of the cathode wire are connected with the connecting rods, and the anode cylinder is sleeved on the outer side of the cathode wire;
the plasma reaction mechanism also comprises a pulse discharge plasma power supply;
the dehydrator comprises a dehydrating tank, one side of the bottom of the dehydrating tank is provided with an air inlet, the upper end of the dehydrating tank is provided with an air outlet, and a plurality of guide plates which are mutually distributed in a dog-tooth staggered manner are arranged on two side walls in the dehydrating tank.
2. The pulse discharge plasma composite alkaline washing spray deodorizing device according to claim 1, characterized in that: the pulse discharge plasma power supply is arranged on the outer side of the reaction box and is a nanosecond high-voltage pulse power supply.
3. The pulse discharge plasma composite alkaline washing spray deodorizing device according to claim 1, characterized in that: the cathode wire is made of 316L materials and assembled, the effective length is 1-1.5 m, the working voltage of the insulating column is 72KV, the insulating distance is larger than or equal to 400mm, the anode cylinder is a vertical pipe section with the diameter of 108mm, the wall thickness is 2mm, the cathode wire is formed by assembling saw-tooth-shaped metal sheets, each metal sheet is provided with 12 saw-tooth tips, and the discharge gap between the cathode wire and the anode cylinder is 45 mm.
4. The pulse discharge plasma composite alkaline washing spray deodorizing device according to claim 1, characterized in that: the guide plate is corrugate, guide plate bottom wave trough department all is equipped with the collecting vat.
5. The pulse discharge plasma composite alkaline washing spray deodorizing device according to claim 1, characterized in that: the extending end part of the guide plate is provided with a water baffle.
6. The pulse discharge plasma composite alkaline washing spray deodorizing device according to claim 1, characterized in that: be equipped with the access hole on dewatering case a lateral wall, be equipped with assorted transparent organic glass in the access hole.
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| CN201921432984.5U CN210814612U (en) | 2019-08-30 | 2019-08-30 | Pulse discharge plasma composite alkali washing spraying deodorization device |
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| CN201921432984.5U CN210814612U (en) | 2019-08-30 | 2019-08-30 | Pulse discharge plasma composite alkali washing spraying deodorization device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729496A (en) * | 2020-06-24 | 2020-10-02 | 苍龙集团有限公司 | Chlorine-oxygen ion purification system for waste gas treatment in biological medicine industry |
| CN112619333A (en) * | 2020-10-22 | 2021-04-09 | 无锡英普朗科技有限公司 | Plasma exhaust-gas treatment equipment |
| CN115228242A (en) * | 2022-07-23 | 2022-10-25 | 中山市格源环保设备有限公司 | Aluminum product paint spraying organic waste gas treatment system and flue gas purification method thereof |
-
2019
- 2019-08-30 CN CN201921432984.5U patent/CN210814612U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729496A (en) * | 2020-06-24 | 2020-10-02 | 苍龙集团有限公司 | Chlorine-oxygen ion purification system for waste gas treatment in biological medicine industry |
| CN112619333A (en) * | 2020-10-22 | 2021-04-09 | 无锡英普朗科技有限公司 | Plasma exhaust-gas treatment equipment |
| CN115228242A (en) * | 2022-07-23 | 2022-10-25 | 中山市格源环保设备有限公司 | Aluminum product paint spraying organic waste gas treatment system and flue gas purification method thereof |
| CN115228242B (en) * | 2022-07-23 | 2023-04-11 | 中山市格源环保设备有限公司 | Aluminum product paint spraying organic waste gas treatment system and flue gas purification method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of deodorization device with pulse discharge plasma combined with alkali washing and spraying Effective date of registration: 20200929 Granted publication date: 20200623 Pledgee: Hangzhou joint rural commercial bank Limited by Share Ltd. branch of culture and education Pledgor: Hangzhou zhuotan Technology Co.,Ltd. Registration number: Y2020330000780 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |