CN100546699C - The improvement method and apparatus of flocked waste gas - Google Patents
The improvement method and apparatus of flocked waste gas Download PDFInfo
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- CN100546699C CN100546699C CNB2007100688740A CN200710068874A CN100546699C CN 100546699 C CN100546699 C CN 100546699C CN B2007100688740 A CNB2007100688740 A CN B2007100688740A CN 200710068874 A CN200710068874 A CN 200710068874A CN 100546699 C CN100546699 C CN 100546699C
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Abstract
The invention discloses a kind of improvement method and apparatus of flocked waste gas.With flocked waste gas cooling, remove fine hair and remove the first order water spray column of ammonia, handle by the water circulated sprinkling, remove most fine hair, most of NH
3With the part organic pollution; To handle the second level oxidizing tower that the low aqueous solubility material in the waste gas of back carries out oxidation through the first order, through hypochlorite oxidation, the Ester that solubility is lower is converted into corresponding acid; Enter third level caustic wash tower at last, the purpose that acid that produces in the second level and alkali lye generation neutralization reaction reach removal." water spray+hypochlorite oxidation+alkali absorbs " of the present invention three grades of group technologies, treatment effect is stable, is difficult for stopping up, and capacity of resisting impact load is strong, and operating cost is low, and waste gas can be realized qualified discharge.
Description
Technical field
The present invention relates to the chemical cleaning method technology of waste gas in the environmental project, particularly relate to a kind of improvement method and apparatus of flocked waste gas.
Background technology
China's electrostatic spinning industry was risen in nineteen seventies, and through the development of three more than ten years, electrostatic spinning production begins to take shape, and technology reaches its maturity.But compare with American-European advanced electrostatic spinning level, it is single that China's electrostatic spinning product structure still shows, and belong to low and middle-grade times, and domestic and international most of markets are also effectively developed, so the electrostatic spinning industry has vast potential for future development.Electrostatic spinning enterprise gives off a large amount of waste gas in process of production, characteristics large-minded, that temperature is high, pollutant kind is various that this waste gas has.
The electrostatic spinning production process is made of impregnation, last suede, oven dry three process, and wherein impregnation operation has the volatilization of small amount of ammonia gas and organic gas; Last suede operation is arranged independent closed room, and the fine hair waste gas after the collection is back to production after cyclone dust removal; Contain water vapour, fine hair, ammonia, methyl acrylate, ethyl acrylate and other water-soluble organic component in the waste gas that baking operation produces, the temperature of oven dry waste gas is 150～160 degree.
At present, the large quantity of exhaust gas of electrostatic spinning production discharging has greatly influenced surrounding environment and resident's productive life, but Shang Weiyou needs a kind of novel electrostatic spinning exhaust gas treatment technology of development at this treatment of waste gas technology and equipment.
Summary of the invention
The object of the present invention is to provide the improvement method and apparatus that discloses a kind of flocked waste gas, adopt water spray-hypochlorite oxidation-alkali to absorb group technology and handle flocked waste gas, significantly reduced exhaust gas discharging.
The technical scheme that the present invention solves its technical problem employing is:
One, a kind of improvement method of flocked waste gas, the step of this method is as follows:
1) flocked waste gas is cooled to 30～50 ℃, enter except that fine hair and remove the first order water spray column of ammonia, handle by the water circulated sprinkling, remove most fine hair, most of NH
3With the part organic pollution;
2) the low aqueous solubility material of handling in the waste gas of back through the first order is entered the second level oxidizing tower of oxidation, through hypochlorite oxidation, the Ester that solubility is lower is converted into corresponding acid;
3) enter third level caustic wash tower at last, the purpose that acid that produces in the second level and alkali lye generation neutralization reaction reach removal;
The empty tower gas velocity of every treating column is designed to 2.5m/s, and liquid-gas ratio is 2.0L/Nm
3
First order spray makes the fine hair precipitation with the volume of circulating water pool, the time of staying that should make recirculated water have 0.5～1 hour.
At the second level oxidation operation oxidation reduction potential control system is set, is equipped with the control magnetic valve, the maintenance oxidation-reduction potential is 800～1500mv.
Caustic wash process the third level is provided with the pH meter control system, is equipped with the control magnetic valve, and keeping pH is 9～11.
Two, a kind of controlling device of flocked waste gas:
Comprise centrifugal blower, anticorrosion underflow pump, first corrosion protection pump, second corrosion protection pump, circulating water pool, liquor natrii hypochloritis pond, alkali lye pond, water spray column, oxidizing tower and caustic wash tower; One termination flocked waste gas import of centrifugal blower, the other end of centrifugal blower inserts the lower end of water spray column, the upper end of water spray column is connected with the lower end of oxidizing tower, the upper end of oxidizing tower is connected with the lower end of caustic wash tower, the upper end of caustic wash tower connects floss hole through aiutage, and water spray column, oxidizing tower and caustic wash tower are communicated with circulating water pool, liquor natrii hypochloritis pond and the alkali lye pond of lower end respectively through pipe; One termination circulating water pool of anticorrosion underflow pump, the other end inserts from the top of water spray column through pipe; One termination liquor natrii hypochloritis pond of first corrosion protection pump, the other end inserts from the top of oxidizing tower through pipe; One termination alkali lye pond of second corrosion protection pump, the other end inserts from the top of oxidizing tower through pipe.
The beneficial effect that the present invention has is:
" water spray+hypochlorite oxidation+alkali absorbs " of the present invention three grades of group technologies, treatment effect is stable, is difficult for stopping up, and capacity of resisting impact load is strong, and operating cost is low, and waste gas can be realized qualified discharge.
Description of drawings
Accompanying drawing is a flocked waste gas processing technological flow schematic diagram.
Among the figure: 1, import, 2, centrifugal blower, 3, anticorrosion underflow pump, 4, first corrosion protection pump, 5, the=corrosion protection pump, 6, circulating water pool, 7, the liquor natrii hypochloritis pond, 8, the alkali lye pond, 9, water spray column, 10, oxidizing tower, 11, caustic wash tower, 12, floating type liquid level meter, 13, oxidation-reduction potentiometer, 14, pH meter, 15, first magnetic valve, 16, second magnetic valve, 17, the clorox medicament, 18, liquid caustic soda, 19, aiutage, 20, floss hole.
The specific embodiment
As shown in drawings, the present invention includes centrifugal blower 2, anticorrosion underflow pump 3, first corrosion protection pump 4, second corrosion protection pump 5, circulating water pool 6, liquor natrii hypochloritis pond 7, alkali lye pond 8, water spray column 9, oxidizing tower 10 and caustic wash tower 11; One termination flocked waste gas import 1 of centrifugal blower 2, the other end of centrifugal blower 2 inserts the lower end of water spray column 9, the upper end of water spray column 9 is connected with the lower end of oxidizing tower 10, the upper end of oxidizing tower 10 is connected with the lower end of caustic wash tower 11, the upper end of caustic wash tower 11 connects floss hole 20 through aiutage 19, and water spray column 9, oxidizing tower 10 and caustic wash tower 11 are communicated with circulating water pool 6, liquor natrii hypochloritis pond 7 and the alkali lye pond 8 of lower end respectively through pipe; One termination circulating water pool of anticorrosion underflow pump 3, the other end inserts from the top of water spray column 9 through pipe; One termination liquor natrii hypochloritis pond of first corrosion protection pump 4, the other end inserts from the top of oxidizing tower 10 through pipe; One termination alkali lye pond of second corrosion protection pump 5, the other end inserts from the top of oxidizing tower 10 through pipe.
In water spray column 9, be connected to floating type liquid level meter 12.Clorox medicament 17 inserts liquor natrii hypochloritis pond 7 through first magnetic valve 15, is connected to oxidation-reduction potentiometer 13 in the liquor natrii hypochloritis pond 7.Liquid caustic soda 18 inserts alkali lye pond 8 through second magnetic valve 16, is connected to pH meter 14 in the alkali lye pond 8.
Operation principle of the present invention is as follows:
As shown in Figure 1, circulatory pool is divided into shower water circulating water pool 6, a lattice liquor natrii hypochloritis pond 7 and a lattice alkali lye pond 8 of two lattice intercommunications.
By centrifugal blower 2 air inducing, flocked waste gas enters water spray column 9 by import 1, recirculated water flows back to circulating water pool 6 through spray, after the clarification of fine hair precipitation, shower water is entered another lattice of circulating water pool 6 by square hole, send into spray column by anticorrosion underflow pump 3 again and recycle, be provided with floating type liquid level meter 12 in the tower, when cutting off the water supply, report to the police automatically.
Waste gas behind spray enters oxidizing tower 10 through airduct, the liquor natrii hypochloritis is sent in the tower by corrosion protection pump 4, flow back to liquor natrii hypochloritis pond 7 behind the oxidation spray, being provided with oxidation-reduction potentiometer 13 in the liquor natrii hypochloritis pond 7 monitors in real time, addition with first magnetic valve, 15 control clorox medicaments 17, the oxidation-reduction potential value that keeps liquor natrii hypochloritis in the circulating water pool is at 800～1500mv, and waste gas enters the next stage tower then.
After hypochlorite oxidation, waste gas enters caustic wash tower 11, alkali lye is sent into caustic wash tower 11 by corrosion protection pump 5, after the spray neutralization, flow back to alkali lye pond 8, be provided with pH meter 14 pH of monitoring solution in real time in the alkali lye pond 8, with the addition of second magnetic valve, 16 control liquid caustic soda 18, the pH that keeps liquid caustic soda solution in the circulating water pool is between 9～11, waste gas after the processing is by aiutage 19, from floss hole 20 high-altitude qualified discharges.The aiutage 19 at caustic wash tower top exports overhead highly 15 meters, and establishes sampling stair, platform, guardrail and lightning arrester.
Claims (8)
1, a kind of improvement method of flocked waste gas is characterized in that the step of this method is as follows:
1) flocked waste gas is cooled to 30～50 ℃, enter except that fine hair and remove the first order water spray column of ammonia, handle by the water circulated sprinkling, remove most fine hair, most of NH
3With the part organic pollution;
2) the low aqueous solubility material of handling in the waste gas of back through the first order is entered the second level oxidizing tower of oxidation, through hypochlorite oxidation, the Ester that solubility is lower is converted into corresponding acid;
3) enter third level caustic wash tower at last, the purpose that acid that produces in the second level and alkali lye generation neutralization reaction reach removal;
The empty tower gas velocity of every treating column is designed to 2.5m/s, and liquid-gas ratio is 2.0L/Nm
3
2, the improvement method of a kind of flocked waste gas according to claim 1 is characterized in that: first order spray makes the fine hair precipitation with the volume of circulating water pool, the time of staying that should make recirculated water have 0.5～1 hour.
3, the improvement method of a kind of flocked waste gas according to claim 1 is characterized in that: at the second level oxidation operation oxidation reduction potential control system is set, is equipped with the control magnetic valve, the maintenance oxidation-reduction potential is 800～1500mv.
4, the improvement method of a kind of flocked waste gas according to claim 1 is characterized in that: the caustic wash process the third level is provided with the pH meter control system, is equipped with the control magnetic valve, and keeping pH is 10～12.
5, a kind of controlling device of flocked waste gas is characterized in that comprising centrifugal blower (2), anticorrosion underflow pump (3), first corrosion protection pump (4), second corrosion protection pump (5), circulating water pool (6), liquor natrii hypochloritis pond (7), alkali lye pond (8), water spray column (9), oxidizing tower (10) and caustic wash tower (11); One termination flocked waste gas import (1) of centrifugal blower (2), the other end of centrifugal blower (2) inserts the lower end of water spray column (9), the upper end of water spray column (9) is connected with the lower end of oxidizing tower (10), the upper end of oxidizing tower (10) is connected with the lower end of caustic wash tower (11), the upper end of caustic wash tower (11) connects floss hole (20) through aiutage (19), and water spray column (9), oxidizing tower (10) and caustic wash tower (11) are communicated with circulating water pool (6), liquor natrii hypochloritis pond (7) and alkali lye pond (8) of lower end respectively through pipe; One termination circulating water pool of anticorrosion underflow pump (3), the other end inserts from the top of water spray column (9) through pipe; One termination liquor natrii hypochloritis pond of first corrosion protection pump (4), the other end inserts from the top of oxidizing tower (10) through pipe; One termination alkali lye pond of second corrosion protection pump (5), the other end inserts from the top of oxidizing tower (10) through pipe.
6, the controlling device of a kind of flocked waste gas according to claim 5 is characterized in that: be connected to floating type liquid level meter (12) in water spray column (9).
7, the controlling device of a kind of flocked waste gas according to claim 5 is characterized in that: clorox medicament (17) inserts liquor natrii hypochloritis pond (7) through first magnetic valve (15), is connected to oxidation-reduction potentiometer (13) in liquor natrii hypochloritis pond (7).
8, the controlling device of a kind of flocked waste gas according to claim 5 is characterized in that: liquid caustic soda (18) inserts alkali lye pond (8) through second magnetic valve (16), is connected to pH meter (14) in alkali lye pond (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100688740A CN100546699C (en) | 2007-05-25 | 2007-05-25 | The improvement method and apparatus of flocked waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100688740A CN100546699C (en) | 2007-05-25 | 2007-05-25 | The improvement method and apparatus of flocked waste gas |
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| Publication Number | Publication Date |
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| CN101073743A CN101073743A (en) | 2007-11-21 |
| CN100546699C true CN100546699C (en) | 2009-10-07 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2365865B1 (en) * | 2008-12-12 | 2013-05-29 | ThyssenKrupp Uhde GmbH | Removal of ammonia nitrogen, ammonium nitrogen and urea nitrogen by oxidation with hypochlorite-containing solutions from exhaust air in plants for producing ammonia and urea |
| CN101934193B (en) * | 2010-10-09 | 2013-05-08 | 郭继中 | Waste gas purification device |
| CN102861502B (en) * | 2011-07-07 | 2014-10-29 | 昆山协孚人造皮有限公司 | Deodorization management system for exhaust gas in residue discharging area |
| CN104141155B (en) * | 2014-07-10 | 2016-06-08 | 湖州织里荣华铝业有限公司 | A kind of electrolytic aluminum emission-control equipment |
| CN104984649B (en) * | 2015-06-14 | 2017-03-15 | 黄志强 | A kind of cleaning system and its control method suitable for exhaust-gas treatment |
| CN105032151B (en) * | 2015-07-15 | 2018-05-29 | 黄国杰 | Air purification method and device |
| CN105032145A (en) * | 2015-08-18 | 2015-11-11 | 江苏一同环保工程技术有限公司 | Boiler flue gas integrated distributed desulfurization and denitration device |
| CN109589722B (en) * | 2018-12-24 | 2021-02-19 | 扬州市顺达科技有限公司 | Treatment method for treating slag waste gas by using circulating filter device |
| CN114570144A (en) * | 2022-04-07 | 2022-06-03 | 四川永祥股份有限公司 | Acetylene supernatant peculiar smell treatment method and system |
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Granted publication date: 20091007 Termination date: 20100525 |