CN212882959U - Wet-type electric dust collector for waste gas treatment - Google Patents
Wet-type electric dust collector for waste gas treatment Download PDFInfo
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- CN212882959U CN212882959U CN202021247654.1U CN202021247654U CN212882959U CN 212882959 U CN212882959 U CN 212882959U CN 202021247654 U CN202021247654 U CN 202021247654U CN 212882959 U CN212882959 U CN 212882959U
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Abstract
The utility model discloses a wet-type electric dust removal device for waste gas treatment, which is provided with a metal discharge electrode, a dust collecting electrode, a high-voltage discharge circuit and a waste gas header pipe, wherein the metal discharge electrode is acid-resistant and alkali-resistant; 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 utility model discloses can get rid of acid, alkaline waste gas, steam and dust, discharge electrode is difficult again by oxidation or bonding greasy dirt lose the discharge function.
Description
Technical Field
The utility model belongs to the waste gas treatment 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
Utility model purpose:
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.
The technical scheme is as follows:
the wet-type electric dust removal device for waste gas treatment of the utility model is provided with a 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, wherein the metal discharge electrode is acid-resistant and alkali-resistant; 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.
The utility model discloses in, it is preferred the waste gas air supply for the waste gas that phosphorus product released is retrieved in glyphosate mother liquor resourceful treatment, waste gas gets into and can connect the heat sink before the waste gas house steward, adopt the cooling to handle waste gas earlier (the purpose makes high temperature steam cooling liquefaction, liquefied moisture dissolves ammonia and hydrogen chloride, form the conductive solution that electric conductivity is good, sputter or cover and form the conductive water film on collection dirt electrode surface, the conductive water film helps reinforcing circuit conduction effect, adsorb again and dissolve the dust and make the dust become the waste liquid, automatic trickling is to the dust collection chamber, need not artifical clearance). 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 utility model discloses the city is done to the non-metallic material that preferred collection dirt is extremely non-conductive, forms the electrically conductive water film through water spray or overflow water ware surface for the high-voltage discharge process lasts and goes on.
Has the advantages that:
the utility model discloses can get rid of acid, alkaline waste gas, steam and dust, discharge electrode is difficult again to lose the discharge function by oxidation or bonding greasy dirt, and collection dirt electrode can adopt cheap safe materials such as plastics or pottery to make, and the electrolyte solution that can form the high concentration simultaneously keeps the good electric conductive property in collection dirt electrode surface for high-pressure discharge can continuously realize, and the laying dust can conveniently be cleared up and is detached.
The utility model discloses earlier get into wet electric dust remover with flue gas cooling to suitable temperature, require to reduce the temperature resistant of material.
Use the utility model discloses can realize that the flue gas trailing problem after phosphorus mother liquor resource recovery phosphorus product device handles thoroughly solves, has purified atmospheric environment.
Drawings
FIG. 1 is a schematic structural view of a dust removing apparatus of 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 waste gas treatment comprises a metal discharge electrode, a dust collecting electrode, a high-voltage discharge circuit, a waste gas main pipe, a purified gas outlet and a 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: the sensor that can measure waste gas pH value is installed on the exhaust gas house steward, and the sensor is connecting the controller through the signal line, and the control valve is being connected through the control line to the controller.
3. The wet type electric dust removal device for waste gas treatment of claim 1, wherein: the control valve is connected with a time delay relay.
4. The wet type electric dust removal device for waste gas treatment of claim 3, wherein: the front of the exhaust gas main pipe is connected with a cooling device for cooling the exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021247654.1U CN212882959U (en) | 2020-06-30 | 2020-06-30 | Wet-type electric dust collector for waste gas treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021247654.1U CN212882959U (en) | 2020-06-30 | 2020-06-30 | Wet-type electric dust collector for waste gas treatment |
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| Publication Number | Publication Date |
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| CN212882959U true CN212882959U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021247654.1U Active CN212882959U (en) | 2020-06-30 | 2020-06-30 | Wet-type electric dust collector for waste gas treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111804438A (en) * | 2020-06-30 | 2020-10-23 | 南通江山农药化工股份有限公司 | Wet-type electric dust removal device for waste gas treatment and use method thereof |
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2020
- 2020-06-30 CN CN202021247654.1U patent/CN212882959U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111804438A (en) * | 2020-06-30 | 2020-10-23 | 南通江山农药化工股份有限公司 | Wet-type electric dust removal device for waste gas treatment and use method thereof |
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