CN103570176B - Method and device for processing waste water of chlorination workshop section in production of pyridinium - Google Patents
Method and device for processing waste water of chlorination workshop section in production of pyridinium Download PDFInfo
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- CN103570176B CN103570176B CN201310531675.4A CN201310531675A CN103570176B CN 103570176 B CN103570176 B CN 103570176B CN 201310531675 A CN201310531675 A CN 201310531675A CN 103570176 B CN103570176 B CN 103570176B
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Abstract
The invention relates to a method and a device for processing waste water in production of pyridinium. Industrial wastewater enters a single effect evaporator from the top of the single effect evaporator, part of ammonium hydroxide is distilled by a heater, the temperature of the single effect evaporator is controlled to be 80-90 DEG C, the wastewater processed by the single effect evaporator enters a kettle-type evaporator for secondary treatment, the vacuum degree is below 0.08-below 0.10MPA, the temperature is controlled to be 60-70 DEG C, the wastewater (ammonium hydroxide) is evaporated to dryness so as to extract ammonium salt, and low concentration ammonium hydroxide evaporated by the single effect evaporator and the kettle-type evaporator returns back to a production system to be recycled. The method has the advantages of effectively using the waste heat of other workshops, reducing the damage of the waste heat to climatic environment, simultaneously processing high-salt high ammonia-nitrogen wastewater generated in the workshop, being capable of recycling the recycled low concentration ammonium hydroxide and waste salt, and reducing the damage of the ammonium hydroxide and waste salt to the environment.
Description
Technical field:
The present invention relates to a kind of pyridinium salt production method, particularly pyridinium salt processes the treatment process of high salt high ammonia-nitrogen wastewater and realizes the device of the method in producing.
Background technology:
Current pyridinium salt chlorination workshop section is due to own characteristic, ammonia neutralization is selected after phosphorus oxychloride distillation terminates, a large amount of high ammonia-nitrogen wastewaters is produced so inevitable, mostly adopt now dilution artifact facture, this method cost is little, and can not cause secondary pollution, but it is little to be confined to processing power, can not reach the demand of Production in Chemical Plant far away.And for energy consumption, evaporation process requires that waste residue that is too high and that produce also is difficult to process.
Summary of the invention
Object of the present invention is exactly process the problem that high salt high ammonia-nitrogen wastewater reduces processing cost, raising comprehensive utilization, chlorination workshop section method of wastewater treatment and device in a kind of pyridinium salt production of proposition to solve during pyridinium salt is produced.
The technical solution used in the present invention is as follows:
Chlorination workshop section method of wastewater treatment in a kind of pyridinium salt production, comprises the following steps:
A, the factory effluent of chlorination workshop section is entered single-effect evaporator from top, control single-effect evaporation actuator temperature 80-90 DEG C, distill out partial ammonia water, control the flooding quantity of waste water: aquifer yield=1:0.5;
B, the waste water after single-effect evaporator process is entered into autoclave vaporizer carry out secondary treatment, autoclave vaporizer vacuum tightness, at negative 0.08-negative 0.10MPA, control temperature 60-70 DEG C, will comprise the waste water evaporate to dryness of ammoniacal liquor, isolate wherein ammonium salt;
The ammoniacal liquor of the lower concentration that c, single-effect evaporator and autoclave evaporator evaporation go out, after the condenser condenses connected separately, returns production system and recycles.
Present invention also offers chlorination workshop section wastewater treatment equipment in the production of a kind of pyridinium salt, it comprises:
A, a single-effect evaporator, the side of single-effect evaporator arranges a well heater, and well heater and single-effect evaporator utilize piping loop to be connected; Another outlet of single-effect evaporator is connected with condenser by pipeline, and condenser is connected with ammoniacal liquor groove by pipeline;
Below b, single-effect evaporator, outlet is connected with autoclave vaporizer with pipeline, and autoclave evaporator tube road is connected with condenser, and condenser pipeline is connected with ammoniacal liquor groove.
The high salt high ammonia-nitrogen wastewater that the present invention utilizes reduced pressure distillation technique chlorination workshop section to be produced, water distills by underpressure distillation, ammonium salt is stayed, the effect considering distillation and the effect of waste heat that can provide, the circulating-heating principle that make use of again single-effect evaporator improves the effect of distillation, reduces the consumption of the method for electric energy.
The present invention utilizes single-action underpressure distillation by high ammonia-nitrogen wastewater lower concentration ammoniacal liquor and ammonium salt solid-liquid separation, and lower concentration ammoniacal liquor returns production system and recycles, and ammonium salt uses as composite fertilizer.
The invention has the advantages that:
The waste heat in other workshops of effective utilization, decrease the harm that waste heat causes for climatope, the high salt high ammonia-nitrogen wastewater that this workshop of simultaneously processing produces, can recycle the lower concentration ammoniacal liquor of returning and abraum salt simultaneously, decrease the destruction to environment.
Accompanying drawing illustrates:
Fig. 1 the invention provides chlorination workshop section wastewater treatment equipment schematic diagram in the production of a kind of pyridinium salt.
Embodiment:
As shown in Figure 1, chlorination workshop section wastewater treatment equipment composed as follows that adopt of the present invention:
First comprise a single-effect evaporator 1, the left side of single-effect evaporator 1 arranges a well heater 2, and well heater 2 utilizes piping loop to be connected with single-effect evaporator 1; Another outlet of single-effect evaporator is connected with condenser 3 by pipeline, and condenser 3 is connected with ammoniacal liquor groove 4 by pipeline; Last outlet of single-effect evaporator 1 pipeline is connected with autoclave vaporizer 5, and autoclave vaporizer 5 pipeline is connected with condenser 6, and condenser 6 pipeline is connected with ammoniacal liquor groove 7.
The present invention mainly adopts first quick sewage prevapourising part water chlorination workshop section produced of single-effect evaporator out, and last sewage evaporation is done by the rear autoclave vaporizer that utilizes.
Aggressiveness operation steps is as follows:
A, sewage chlorination workshop section produced inject single-effect evaporator 1, utilize the process of well heater circulating and evaporating, well heater controls single-effect evaporator service temperature 80-90 DEG C, flooding quantity: aquifer yield=1:0.5, the ammoniacal liquor of distillation, by entering ammoniacal liquor groove 4 after condenser 3, then enters water system and returns the use of production systemic circulation;
B, the sewage after single-effect evaporator process is entered autoclave vaporizer 2 carry out second distillation, control vacuum tightness at-0.09MPA, control temperature 60-70 DEG C, waste water (ammoniacal liquor) evaporate to dryness is isolated wherein ammonium salt, the ammoniacal liquor of distillation, by entering ammoniacal liquor groove 7 after condenser 6, then enters water system and returns the use of production systemic circulation;
C, scraper is utilized to be scraped by the dry salt in autoclave vaporizer, pack.
Claims (2)
1. a chlorination workshop section method of wastewater treatment in pyridinium salt production, comprises the following steps:
A, the factory effluent of chlorination workshop section is entered single-effect evaporator from top, control single-effect evaporation actuator temperature 80-90 DEG C, distill out partial ammonia water, control the flooding quantity of waste water: aquifer yield=1:0.5;
B, the waste water after single-effect evaporator process is entered into autoclave vaporizer carry out secondary treatment, autoclave vaporizer vacuum tightness, at negative 0.08-negative 0.10MPA, control temperature 60-70 DEG C, will comprise the waste water evaporate to dryness of ammoniacal liquor, isolate wherein ammonium salt;
The ammoniacal liquor of the lower concentration that c, single-effect evaporator and autoclave evaporator evaporation go out, after the condenser condenses connected separately, returns production system and recycles.
2. a chlorination workshop section wastewater treatment equipment in pyridinium salt production, it comprises:
A, a single-effect evaporator, the side of single-effect evaporator arranges a well heater, and well heater and single-effect evaporator utilize piping loop to be connected; Another outlet of single-effect evaporator is connected with condenser by pipeline, and condenser is connected with ammoniacal liquor groove by pipeline;
Below b, single-effect evaporator, outlet is connected with autoclave vaporizer with pipeline, and autoclave evaporator tube road is connected with condenser, and condenser pipeline is connected with ammoniacal liquor groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310531675.4A CN103570176B (en) | 2013-11-01 | 2013-11-01 | Method and device for processing waste water of chlorination workshop section in production of pyridinium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310531675.4A CN103570176B (en) | 2013-11-01 | 2013-11-01 | Method and device for processing waste water of chlorination workshop section in production of pyridinium |
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| Publication Number | Publication Date |
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| CN103570176A CN103570176A (en) | 2014-02-12 |
| CN103570176B true CN103570176B (en) | 2015-05-13 |
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| CN201310531675.4A Active CN103570176B (en) | 2013-11-01 | 2013-11-01 | Method and device for processing waste water of chlorination workshop section in production of pyridinium |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109553237A (en) * | 2018-12-11 | 2019-04-02 | 安徽金禾实业股份有限公司 | The method that material extracts again in pyridiniujm alcoholization workshop section's waste water |
| CN111704305A (en) * | 2020-07-14 | 2020-09-25 | 新乡瑞诺药业有限公司 | Wastewater recycling process and device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292043A (en) * | 1979-02-15 | 1981-09-29 | Bayer Antwerpen | Process for working up effluent containing ammonium sulphate |
| US4323430A (en) * | 1981-03-16 | 1982-04-06 | United States Steel Corporation | Process for separating ammonia and acid gases from streams containing fixed ammonia salts |
| CN1086678C (en) * | 1999-09-16 | 2002-06-26 | 游川北 | Process for recovering ammonia from waste chemical water by digestion method |
| CN101259967A (en) * | 2008-03-06 | 2008-09-10 | 马永伟 | Vacuum ammonia distillation technique |
| CN101391848B (en) * | 2008-10-22 | 2010-06-16 | 利民化工股份有限公司 | Comprehensive treatment method of ammonia-containing waste water in production of metiram type products |
| CN101544437B (en) * | 2009-04-30 | 2011-04-27 | 河北工业大学 | Process method for recovering ammonium chloride and sodium chloride from waste water containing ammonium chloride and sodium chloride |
| US8580219B2 (en) * | 2011-07-25 | 2013-11-12 | Coskata, Inc. | Ammonium recovery methods |
| CN102765841B (en) * | 2012-05-15 | 2013-09-18 | 山西三维丰海化工有限公司 | Method for recovering 3,5,6-Trichloropyridin-2-ol sodium from 3,5,6-Trichloropyridin-2-ol sodium alkaline hydrolysis wastewater |
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