CN101684023B - Ethyne wastewater recycling process - Google Patents
Ethyne wastewater recycling process Download PDFInfo
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- CN101684023B CN101684023B CN2008101681974A CN200810168197A CN101684023B CN 101684023 B CN101684023 B CN 101684023B CN 2008101681974 A CN2008101681974 A CN 2008101681974A CN 200810168197 A CN200810168197 A CN 200810168197A CN 101684023 B CN101684023 B CN 101684023B
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- waste water
- supernatant liquor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention relates to an ethyne wastewater recycling process comprising the following steps in sequence: supernate out of an overflow pipe of a generator flows in a thickener via an aqueduct to be settled, the supernate on the upper part overflows to a hot water pool, part of supernate is conveyed to a cooler through a pump for cooling, then conveyed into a mud washer by a pump for cooling acetylene gas just coming out of the generator, and then enters into the other generator to react with calcium carbide; other parts of supernate is conveyed to a slag flushing position by a pump for flushing thick slurry discharged from the generator during slag discharging, and then pumped by a pump to the thickener for recycling; part of waste sodium hypochlorite solution generated by a purifying tower is conveyed to a sodium hypochlorite preparation slot for preparing a fresh sodium hypochlorite solution, the other part of waste sodium hypochlorite solution flows to a wastewater tank and is used as cooling water of a cooling tower and a washing tower, and then returns to the wastewater tank, and the left waste sodium hypochlorite solution is conveyed to the generator by a pump to complementing the water for reaction of the generator. The invention reduces the wastewater discharge, resource waste and environment pollution and can be matched with an upstream and downstream industrial process for use.
Description
Technical field
The present invention relates to a kind of acetylene method for reclaiming waste water, the method for pollution is all recycled and reduce to particularly a kind of waste water that calcium carbide legal system acetylene is produced.
Background technology
At present, the waste water of chlorine industry production has characteristics such as quantity discharged is big, kind is many, Pollutant levels are high, pollution is wide, pollutent hazardness is big; The carbide slag slurries supernatant liquor is exactly wherein a kind of in the carbide acetylene method production polyvinyl chloride (PVC) RESINS process, and ethene oxychlorination method Production of PVC technology is occupied an leading position abroad, and carbide slag supernatant fluid is handled and the closed cycle recovery does not appear in the newspapers; Yet, domestic Production of PVC technology is based on calcium carbide route, some enterprise configuration bigger waste disposal plant, handle sewage such as acetylene supernatant liquor are concentrated, because quantity of wastewater effluent is big, intractability is high, the energy consumption height, handle abundant inadequately, such as: more domestic enterprises by to supernatant liquor cooling handle the back recycle in acetylene generating system.But since with peace and quiet system support after the imbalance (peace and quiet system wastewater flow rate is much larger than the water requirement of generation systems) of water, cause supernatant liquor excessive and efflux, so problem still exists.
Also announced several method (Cao Jianlin in the document, Wang Hongjiang, ride intelligence Wei, Chen Changsheng. the whole closed cycle reuse technologies of carbide slag slurries supernatant liquor [J]. Chinese chlor-alkali, 2004, (07), Cao Jianlin, Liu Ruisheng, ride intelligence Wei. the research of the whole closed cycle reuse technologies of carbide slag slurries supernatant liquor and enforcement [J]. Chinese chlor-alkali, 2000, (02)), the introduction that the author is detailed several acetylene supernatant effluents handle reuse technologies, its method and feasibility have also obtained further confirmation, have not only saved great lot of water resources but also have solved with serious pollution problem, especially mention whole closed cycle using method in the last document, its concrete technology is as follows: the radical sedimentation basin of the carbide slag slurries that carbide-feed generator overflows outside the past factory of pumping.Through post precipitation, the carbide slag slurries supernatant liquor is after the spray cooling device cooling, and toward the carbide-feed generator reuse, insufficient section is added useless chlorine bleach liquor and secondary water with pumping.The introduction that the author is detailed in the literature the advantage of this technology, but because the water of acetylene water wash column, peace and quiet tower adds in the producer in a large number in this technology, cause the water yield in the producer excessive, after adding useless chlorine bleach liquor, increased substantially the wastewater flow rate that useless time sodium returns generation systems again, make acetylene generating system lose self water balance, be equivalent to appoint to efflux a part of supernatant effluent and keep water balance.The supernatant liquor that so effluxes not only severe contamination environment, and caused the waste of great lot of water resources, problem still is not resolved in fact.
The objective of the invention is to solve, intractability high, problem of environment pollution caused thoroughly abundant inadequately in the prior art to the acetylene wastewater treatment; And then provide a kind of to the acetylene wastewater treatment comparatively thoroughly, the little ethyne wastewater recycling process of environmental pollution.
A kind of ethyne wastewater recycling process, comprise following steps in order: at first the supernatant liquor that comes out from the producer upflow tube carries out sedimentation through aqueduct to thickener, bottom slag slurry is sent to cement mill system cement, upper clear supernate overflows to hot tub by the overflow port on thickener top by pipeline, part supernatant liquor by pumping toward the water cooler cooling of lowering the temperature, cooled supernatant liquor is washed the acetylene gas that the cooling of mud device has just been come out from producer with being pumped into, after enter the reaction of producer and calcium carbide, serve as the reaction water, another part supernatant liquor is with being pumped into the flushing cinder post, the thick slurry that flushing is discharged from the producer deslagging, the back is extracted into thickener by pump, carries out reuse again; Next is to send into clorox by useless chlorine bleach liquor's part that peace and quiet tower produces to join the fresh chlorine bleach liquor of groove configuration, the useless clorox of another part flows to wastewater trough, return wastewater trough behind the cooling water as cooling tower, water wash column and recycle, remaining replenishes producer reaction water by being pumped into producer;
Summary of the invention
Described acetylene method for reclaiming waste water, the useless chlorine bleach liquor who sends into cooling tower, water wash column in the wastewater trough all is recovered utilization, need not add service water, has fundamentally reduced the add-on of water, improves the utilization ratio of water.
Described acetylene method for reclaiming waste water, wastewater trough is connected with water cooler, water wash column, producer respectively, and technological design is reasonable, and is easy and simple to handle.
Described acetylene method for reclaiming waste water, the waste water after cooling tower, water wash column utilization is admitted to wastewater trough and recycles, and without efflux wastewater, reduces environmental pollution.
Described acetylene method for reclaiming waste water, the indirect heat exchange cooling is adopted in the acetylene gas cooling, has fundamentally reduced the generation of waste water.
Described acetylene method for reclaiming waste water, employing split the pipe type heat transfer device directly lowers the temperature to acetylene by external source, changes the reverse contact cooling mode of traditional aqueous vapor, has further reduced the generation of waste water, makes rational use of resources, and has improved economic benefit.
Described acetylene method for reclaiming waste water, producer with wash the mud device and link to each other, cooled supernatant liquor is sent into and is washed the acetylene that the mud device is used for cooling off producer, supernatant liquor is admitted to producer and recycles afterwards.
Waste water of the present invention is that the used supernatant liquor of water through producing behind the thickener of producer cooling in the calcium carbide route acetylene arranged; The useless chlorine bleach liquor that waste water that cooling acetylene produces in cooling tower and the water wash column and peace and quiet tower produce.
The present invention will produce the rational recycling use of waste water that acetylene produces, need not add service water and efflux wastewater, improved the utilization ratio of water resources, reduced discharging, the wasting of resources and the environmental pollution of waste water, also can recycle with upstream, downstream industry process matching.
Specifically, the present invention adopts waste water integral body to recycle, and waste water all has been utilized, and is comparatively thorough to wastewater treatment, and non-environmental-pollution has not only been saved great lot of water resources, greatly reduces production cost, and has improved economic benefit; Change traditional acetylene type of cooling, significantly reduced the generation of waste water, and cooling performance is better, economic benefit is higher relatively.
Description of drawings
Fig. 1 is the process flow sheet of the embodiment of the invention 1.
Fig. 2 is existing technology acetylene supernatant liquor processing flow chart.
Describe the present invention in detail below in conjunction with accompanying drawing, with reference to Fig. 1, present embodiment 1 comprises following steps in order: at first the supernatant liquor that comes out from producer 1 upflow tube carries out sedimentation through aqueduct 2 to thickener 3, bottom slag slurry is sent to cement mill system cement, upper clear supernate overflows to hot tub 5 by the overflow port on thickener 3 tops by pipeline, part supernatant liquor is sent to water cooler 6 cooling of lowering the temperature by pump 4, cooled supernatant liquor is sent into pump 4 and is washed the acetylene gas that 7 coolings of mud device have just been come out from producer 1, after enter the reaction of producer 1 and calcium carbide, serve as the reaction water, wherein, producer 1 with wash mud device 7 and link to each other, cooled supernatant liquor is sent into and is washed the acetylene that mud device 7 is used for cooling off producer 1, and supernatant liquor is admitted to producer 1 and recycles afterwards; Another part supernatant liquor is delivered to the flushing cinder post with pump 4, the thick slurry that flushing is discharged from producer 1 deslagging, and the back is extracted into thickener 3 by pump 4, carries out reuse again; Next is to send into clorox by useless chlorine bleach liquor's part that peace and quiet tower 11 produces to join the fresh chlorine bleach liquor of groove 12 configurations, the useless clorox of another part flows to wastewater trough 10, wastewater trough 10 is connected with cooling tower 9, water wash column 8, producer 1 respectively, the cooling water that is admitted to cooling tower 9, water wash column 8 returns in the wastewater trough 10 after cooling and washing are finished, wherein, the acetylene cooling is adopted the indirect heat exchange method of cooling and is split the pipe type heat transfer device and directly acetylene lowered the temperature by external source, has fundamentally reduced the add-on of water; Be admitted to the molten additional producer 1 reaction water of useless clorox of producer 1, recycle.
Embodiment
Claims (7)
1. ethyne wastewater recycling process, its feature comprises following steps in order: the supernatant liquor that comes out from the producer upflow tube carries out sedimentation through aqueduct to thickener, bottom slag slurry is sent to cement mill system cement, upper clear supernate overflows to hot tub by the overflow port on thickener top by pipeline, part supernatant liquor by pumping toward the cooling tower cooling of lowering the temperature, cooled supernatant liquor is washed the acetylene gas that the cooling of mud device has just been come out from producer with being pumped into, after enter the reaction of producer and calcium carbide, serve as the reaction water, another part supernatant liquor is with being pumped into the flushing cinder post, the thick slurry that flushing is discharged from the producer deslagging, the back is extracted into thickener by pump, carries out reuse again; Next is to send into clorox by useless chlorine bleach liquor's part that peace and quiet tower produces to join the fresh chlorine bleach liquor of groove configuration, the useless clorox of another part flows to wastewater trough, as the cooling water of cooling tower, water wash column, the back replenishes producer reaction water by being pumped into producer.
2. by the described acetylene method for reclaiming waste water of claim 1, it is characterized in that the useless chlorine bleach liquor who sends into cooling tower, water wash column in the wastewater trough all is recovered utilization, need not add service water.
3. by the described acetylene method for reclaiming waste water of claim 2, it is characterized in that wastewater trough is connected with water cooler, water wash column, producer respectively.
4. by the described acetylene method for reclaiming waste water of claim 3, it is characterized in that waste water after cooling tower, water wash column utilization is admitted to wastewater trough and recycles.
5. by the described acetylene method for reclaiming waste water of claim 1 to 4, it is characterized in that the cooling of acetylene gas cooling employing indirect heat exchange.
6. by the described acetylene method for reclaiming waste water of claim 5, it is characterized in that adopting and split the pipe type heat transfer device and directly acetylene is lowered the temperature by external source, change the reverse contact cooling mode of traditional aqueous vapor.
7. by the described acetylene method for reclaiming waste water of claim 6, it is characterized in that, producer with wash the mud device and link to each other, cooled supernatant liquor is sent into and is washed the acetylene that the mud device is used for cooling off producer, supernatant liquor is admitted to producer and recycles afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101681974A CN101684023B (en) | 2008-09-26 | 2008-09-26 | Ethyne wastewater recycling process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101681974A CN101684023B (en) | 2008-09-26 | 2008-09-26 | Ethyne wastewater recycling process |
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| CN101684023A CN101684023A (en) | 2010-03-31 |
| CN101684023B true CN101684023B (en) | 2011-09-28 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102844181B (en) * | 2010-05-24 | 2015-12-09 | 希乐克公司 | Processing biomass |
| CN103130294A (en) * | 2011-12-05 | 2013-06-05 | 天辰化工有限公司 | Method of extracting dissolved acetylene gas from sodium hypochlorite waste water in vacuum in acetylene manufacturing process |
| CN102604676A (en) * | 2012-01-12 | 2012-07-25 | 昊华宇航化工有限责任公司 | Sodium hypochlorite waste liquor reclaiming process |
| CN104437049B (en) * | 2014-11-12 | 2016-12-07 | 贵州开磷集团股份有限公司 | The double alkali fume desulphurization method of a kind of coupling symbiotic |
| CN106520203A (en) * | 2015-09-10 | 2017-03-22 | 安徽天辰化工股份有限公司 | Acetylene dreg slurry conveying system |
| CN110331003B (en) * | 2019-06-21 | 2021-07-13 | 航锦科技股份有限公司 | Recovery method of waste cleaning liquid for preparing acetylene by wet method |
| CN114262627A (en) * | 2021-12-30 | 2022-04-01 | 安徽华塑股份有限公司 | Carbide slag slurry acetylene recovery method and device |
| CN114470962A (en) * | 2021-12-31 | 2022-05-13 | 安徽华塑股份有限公司 | Comprehensive utilization process of carbide slag slurry |
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Owner name: SHIHEZI DEVELOPMENT ZONE TIANYE CHEMICAL INDUSTRY Free format text: FORMER OWNER: XINJIANG TIANYE (GROUP) CO., LTD. Effective date: 20131028 |
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Effective date of registration: 20131028 Address after: 832000 No. 15, 18 North Road, North Industrial Park, the Xinjiang Uygur Autonomous Region, Shihezi Patentee after: SHIHEZI DEVELOPMENT ZONE TIANYE CHEMICAL CO., LTD. Address before: The North economic and Technological Development Zone Shihezi city the Xinjiang Uygur Autonomous Region road 832000 No. 36 Patentee before: Xinjiang Tianye (Group) Co., Ltd. |
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Address after: 832000 No. 15, 18 North Road, North Industrial Park, Xinjiang, Shihezi Patentee after: Shihezi Tianyu new solid chemical Co. Ltd. Address before: 832000 No. 15, 18 North Road, North Industrial Park, Xinjiang, Shihezi Patentee before: SHIHEZI DEVELOPMENT ZONE TIANYE CHEMICAL CO., LTD. |