CN111804438A - Wet-type electric dust removal device for waste gas treatment and use method thereof - Google Patents
Wet-type electric dust removal device for waste gas treatment and use method thereof Download PDFInfo
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- CN111804438A CN111804438A CN202010616869.4A CN202010616869A CN111804438A CN 111804438 A CN111804438 A CN 111804438A CN 202010616869 A CN202010616869 A CN 202010616869A CN 111804438 A CN111804438 A CN 111804438A
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- waste gas
- wet
- dust
- control valve
- electric dust
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- 239000000428 dust Substances 0.000 title claims abstract description 66
- 239000002912 waste gas Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims description 8
- 239000007789 gas Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 9
- 239000003513 alkali Substances 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000005562 Glyphosate Substances 0.000 description 6
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 description 6
- 229940097068 glyphosate Drugs 0.000 description 6
- 239000012452 mother liquor Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003897 fog Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/53—Liquid, or liquid-film, electrodes
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- Electrostatic Separation (AREA)
Abstract
The wet-type electric dust removal device for waste gas treatment provided by the invention is provided with an acid-resistant alkali-resistant corrosion-resistant metal discharge electrode, a dust collecting electrode, a high-voltage discharge circuit and a waste gas main pipe; a waste gas branch, a purified gas outlet and a dust collecting cavity; the waste gas branch is connected with the side wall of the waste gas main pipe through a control valve, and the partial sleeve of the metal discharge electrode is arranged in the waste gas branch. The invention can remove acid and alkaline waste gas, water vapor and dust, and the discharge electrode is not easy to be oxidized or bonded with oil stain to lose the discharge function.
Description
Technical Field
The present invention belongs to the field of waste gas treating technology.
Background
The wet electric dust collector is a high-voltage electrostatic dust collector for treating moisture-containing gas, is mainly used for removing harmful substances such as dust, acid mist, water drops, aerosol, odor, PM2.5 and the like in the moisture-containing gas, and is ideal equipment for treating atmospheric dust pollution. The wet electric dust remover is generally called WESP for short, and the basic principle of dust removal is the same as that of the dry electric dust remover, and the wet electric dust remover is subjected to three stages of charging, collecting and dust removal.
The wet electric dust collector is provided with a high-voltage discharger, a discharge electrode and another dust collecting electrode, wherein the discharge electrode is generally a metal tip; the dust collecting electrode can be made of conductive material or non-metal material (conductive water film is formed by water flow).
In the process of producing glyphosate in pesticide chemical enterprises, a large amount of glyphosate mother liquor is generated, wherein the glyphosate mother liquor contains inorganic ammonia, organic amine and chloride ions, ammonia gas, hydrogen chloride and dust can be generated after the treatment of a device for recycling phosphorus products from phosphorus-containing mother liquor, the interception efficiency of a bag-type dust remover is very low, and flue gas is cooled after being discharged from a chimney to generate ammonium chloride fine particles which have a trailing phenomenon together with water vapor.
Disclosure of Invention
The purpose of the invention is as follows:
the wet-type electric dust removal device for treating the moisture-containing waste gas can continuously discharge electricity, has a good dust removal effect and can be quickly cleaned and the using method thereof are provided.
The technical scheme is as follows:
the wet-type electric dust removal device for waste gas treatment is provided with an acid-resistant alkali-resistant corrosion-resistant metal discharge electrode, a dust collecting electrode, a high-voltage discharge circuit, a waste gas main pipe (wherein the waste gas contains water vapor, acid gas or alkaline gas and the like), a waste gas branch, a purified gas outlet and a dust collecting cavity; the waste gas branch is connected to the side wall of the waste gas main pipe through the control valve, the partial sleeve of the metal discharge electrode is arranged in the waste gas branch (the discharge end of the metal discharge electrode is exposed outside, high corona is generated between the metal discharge electrode and the dust collecting electrode under the pulse direct current voltage of the high-voltage discharge circuit, so that gas molecules are ionized to generate positive ions and negative ions or electrons, the positive ions and part of dust are adsorbed to carry positive charges, the negative ions or electrons and part of dust are adsorbed to carry negative charges, and then the metal discharge electrode and the dust collecting electrode are rapidly moved and deposited in a dust collecting cavity under the action of electric field force, so that the purpose of waste gas dust collection is realized.
A sensor capable of measuring the PH value of the waste gas is additionally arranged on the waste gas main pipe, the sensor is connected with a controller through a signal wire, and the controller is connected with a control valve through a control wire; when the PH value of the waste gas in the waste gas main pipe is small (such as less than 4.0) or the PH value is large (such as more than 10.0), the control valve is opened, all or part of the aqueous waste gas with large acidity or alkalinity flows through the waste gas branch pipe, and the discharging electrode inserted in the waste gas branch pipe is subjected to acid cleaning (removing surface oxide films) or alkali cleaning (removing oil stains adsorbed on the surface), so that the surface of the discharging electrode is kept clean, and the discharging device has good continuous discharging capacity.
The control valve or the control valve is connected with a time delay relay (the time delay is 10-20S, the control valve is automatically closed when the time is exceeded, the discharge electrode is prevented from being corroded by excessive acid washing or alkali washing, the working time of discharge dust removal is ensured to be longer, all waste gas is sent into the dust removal space through the waste gas main pipe for discharge dust removal, the basically clean gas after dust removal is emptied from the purified gas outlet, the generated charged dust is mainly attracted and deposited by the dust collection electrode (electronegative dust), and the electropositive dust is attracted and deposited by the discharge electrode. The deposited dust is collected together in a dust collecting chamber.
In the invention, preferably, the waste gas source is waste gas released by recycling a glyphosate mother liquor to recover a phosphorus product, the waste gas can be connected with a cooling device before entering a waste gas main pipe, the waste gas is firstly cooled and liquefied (aiming at cooling and liquefying high-temperature water vapor, and liquefied water dissolves ammonia and hydrogen chloride to form a conductive solution with good conductivity, and the conductive solution is sputtered or covered on the surface of a dust collecting electrode to form a conductive water film which is beneficial to enhancing the circuit conduction effect and adsorbs and dissolves dust to enable the dust to become waste liquid and automatically flow into a dust collecting cavity without manual cleaning). Therefore, ammonia, hydrogen chloride, dust and fog drops in the flue gas are removed through wet electric dust removal, and the problem of trailing of ammonium chloride and smoke dust formed after the flue gas is cooled is solved.
The invention preferably selects non-conductive non-metallic materials with extremely non-conductive dust collection, and a conductive water film is formed on the surface of the water spraying or overflowing device, so that the high-voltage discharge process is continuously carried out.
Has the advantages that:
the invention can remove acid and alkaline waste gas, water vapor and dust, the discharge electrode is not easy to be oxidized or bonded with oil stain to lose the discharge function, the dust collecting electrode can be made of cheap and safe materials such as plastics or ceramics, and the like, and simultaneously, high-concentration electrolyte solution can be formed to keep the good conductivity of the surface of the dust collecting electrode, so that high-voltage discharge can be continuously realized, and the accumulated dust can be conveniently cleaned and removed.
The invention firstly cools the flue gas to a proper temperature and then enters the wet electric dust collector, so that the temperature resistance requirement on the material is reduced.
The application of the invention can thoroughly solve the problem of flue gas tailing after the treatment of the device for recycling the phosphorus product from the phosphorus-containing mother liquor, and purify the atmospheric environment. Ensures the efficient and reliable treatment of the glyphosate mother liquor, further ensures the high-load production of a glyphosate device, and has the advantages of less investment, quick response and the like.
Drawings
FIG. 1 is a schematic view of a dust removing apparatus according to the present invention;
in the figure, 1-discharge electrode, 2-waste gas branch, 3-control valve, 4-controller, 5-sensor, 6-dust collecting chamber, 7-high voltage discharge circuit, 8-dust collecting electrode, 9-purified gas outlet, 20-waste gas main pipe.
Detailed Description
The wet-type electric dust collector for waste gas treatment as shown in figure 1 comprises metal discharge electrodes with acid resistance, alkali resistance and corrosion resistance, a dust collecting electrode, a high-voltage discharge circuit, a waste gas main pipe, a purified gas outlet and a dust collecting cavity; in addition, the device is provided with a waste gas branch, the waste gas branch is connected to the side wall of a waste gas main pipe through a control valve, the partial part of the metal discharge electrode is sleeved in the waste gas branch, and the discharge end of the metal discharge electrode is exposed outside the waste gas branch.
A sensor capable of measuring the PH value of the waste gas is arranged on the waste gas main pipe, the sensor is connected with a controller through a signal wire, and the controller is connected with a control valve through a control wire; the control valve opens when the PH of the exhaust gas in the exhaust manifold is low or high.
Be connected with the heat sink before the exhaust gas house steward, cool down earlier and handle waste gas for high temperature steam cooling liquefaction forms electrolyte, forms the electrically conductive water film on collection dirt electrode surface.
Claims (4)
1. A wet-type electric dust collector for treating waste gas is composed of acid-proof and alkali-proof metallic discharge electrodes, dust collecting electrodes, high-voltage discharge circuit, main waste gas pipe, purified gas outlet and dust collecting cavity; the method is characterized in that: in addition, the device is provided with a waste gas branch, the waste gas branch is connected to the side wall of a waste gas main pipe through a control valve, the partial part of the metal discharge electrode is sleeved in the waste gas branch, and the discharge end of the metal discharge electrode is exposed outside the waste gas branch.
2. The wet type electric dust removal device for waste gas treatment of claim 1, wherein: a sensor capable of measuring the PH value of the waste gas is arranged on the waste gas main pipe, the sensor is connected with a controller through a signal wire, and the controller is connected with a control valve through a control wire; the control valve opens when the PH of the exhaust gas in the exhaust manifold is low or high.
3. The use method of the wet electric dust collector for waste gas treatment as claimed in claim 1, is characterized in that: the control valve is connected with a delay relay for delaying 10-20S.
4. The use method of the wet electric dust collector for waste gas treatment as claimed in claim 3, wherein: be connected with the heat sink before the exhaust gas house steward, cool down the processing to exhaust gas earlier for high temperature steam cooling liquefaction, ammonia and hydrogen chloride are dissolved to liquefied moisture, form the good conducting solution of electric conductivity, form the water film of conducting electricity on collection dirt electrode surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010616869.4A CN111804438A (en) | 2020-06-30 | 2020-06-30 | Wet-type electric dust removal device for waste gas treatment and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010616869.4A CN111804438A (en) | 2020-06-30 | 2020-06-30 | Wet-type electric dust removal device for waste gas treatment and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111804438A true CN111804438A (en) | 2020-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010616869.4A Pending CN111804438A (en) | 2020-06-30 | 2020-06-30 | Wet-type electric dust removal device for waste gas treatment and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111804438A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001400A (en) * | 2014-05-30 | 2014-08-27 | 张志鹏 | Wet-type high-voltage ionization dust removing demister |
| CN105588450A (en) * | 2015-12-23 | 2016-05-18 | 上海翰忠环保有限公司 | Wet electric precipitation technique for comprehensive treatment of smoke of smelting furnace and heat preserving furnace for aluminum |
| CN105944837A (en) * | 2016-06-30 | 2016-09-21 | 广东佳德环保科技有限公司 | Novel efficient wet type electrical precipitator based on pulse power supply |
| CN107537689A (en) * | 2017-09-25 | 2018-01-05 | 北京雪迪龙科技股份有限公司 | Small high voltage electrostatic dust arrester and preparation method thereof |
| CN108212536A (en) * | 2016-12-22 | 2018-06-29 | 维美德技术有限公司 | Method and apparatus |
| CN110420755A (en) * | 2019-09-02 | 2019-11-08 | 宁夏马连富电力科技有限公司 | Full liquid dust arrest pole electric dust-collecting device |
| CN212882959U (en) * | 2020-06-30 | 2021-04-06 | 南通江山农药化工股份有限公司 | Wet-type electric dust collector for waste gas treatment |
-
2020
- 2020-06-30 CN CN202010616869.4A patent/CN111804438A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001400A (en) * | 2014-05-30 | 2014-08-27 | 张志鹏 | Wet-type high-voltage ionization dust removing demister |
| CN105588450A (en) * | 2015-12-23 | 2016-05-18 | 上海翰忠环保有限公司 | Wet electric precipitation technique for comprehensive treatment of smoke of smelting furnace and heat preserving furnace for aluminum |
| CN105944837A (en) * | 2016-06-30 | 2016-09-21 | 广东佳德环保科技有限公司 | Novel efficient wet type electrical precipitator based on pulse power supply |
| CN108212536A (en) * | 2016-12-22 | 2018-06-29 | 维美德技术有限公司 | Method and apparatus |
| CN107537689A (en) * | 2017-09-25 | 2018-01-05 | 北京雪迪龙科技股份有限公司 | Small high voltage electrostatic dust arrester and preparation method thereof |
| CN110420755A (en) * | 2019-09-02 | 2019-11-08 | 宁夏马连富电力科技有限公司 | Full liquid dust arrest pole electric dust-collecting device |
| CN212882959U (en) * | 2020-06-30 | 2021-04-06 | 南通江山农药化工股份有限公司 | Wet-type electric dust collector for waste gas treatment |
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