CN103787436A - 2-naphthol production wastewater treatment method - Google Patents

2-naphthol production wastewater treatment method Download PDF

Info

Publication number
CN103787436A
CN103787436A CN201410055962.7A CN201410055962A CN103787436A CN 103787436 A CN103787436 A CN 103787436A CN 201410055962 A CN201410055962 A CN 201410055962A CN 103787436 A CN103787436 A CN 103787436A
Authority
CN
China
Prior art keywords
mother liquor
beta naphthal
wastewater treatment
naphthalene sulfonate
steam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410055962.7A
Other languages
Chinese (zh)
Other versions
CN103787436B (en
Inventor
李洪彬
刘颢
刘晗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SINOCHEM ENVIRONMENTAL HOLDINGS Ltd.
Original Assignee
SINOCHEM ENERGY SAVING ENVIRONMENTAL PROTECTION HOLDING (BEIJING) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SINOCHEM ENERGY SAVING ENVIRONMENTAL PROTECTION HOLDING (BEIJING) Co Ltd filed Critical SINOCHEM ENERGY SAVING ENVIRONMENTAL PROTECTION HOLDING (BEIJING) Co Ltd
Priority to CN201410055962.7A priority Critical patent/CN103787436B/en
Publication of CN103787436A publication Critical patent/CN103787436A/en
Application granted granted Critical
Publication of CN103787436B publication Critical patent/CN103787436B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a 2-naphthol production wastewater treatment method. By adopting the method, 2-naphthol production wastewater is treated in an energy-saving way, 2-sodium naphthalene sulfonate and sodium sulfate in the 2-naphthol production wastewater are respectively recycled, and particularly the 2-sodium naphthalene sulfonate in the 2-naphthol production wastewater can be applied to a 2-naphthol production process as a production raw material resource, thus realizing virtuous cycle of wastewater treatment. The wastewater treatment method is characterized by comprising the steps of condensing 2-naphthol production wastewater to obtain a solid-liquid mixture containing initial mother liquor and a 2-sodium naphthalene sulfonate solid, delivering the solid-liquid mixture to a first crystal magma tank so as to separate the 2-sodium naphthalene sulfonate solid and the initial mother liquor in the solid-liquid mixture through the separation function of a first separation device, and recycling the 2-sodium naphthalene sulfonate solid, wherein the operation of condensing is implemented in a first effect evaporator; condensing the initial mother liquid in a second effect evaporator to obtain circulating mother liquor and a sodium sulfate solid, returning the circulating mother liquor to the second effect evaporator and condensing the circulating mother liquor again with the initial mother liquor.

Description

A kind of beta naphthal production wastewater treatment method
Technical field
The present invention relates to beta naphthal Wastewater Treatment, particularly a kind of beta naphthal production wastewater treatment method.
Background technology
Beta naphthal factory effluent colourity is high, COD is high, salts contg is high, cannot process meet the requirement of environmental protection by traditional biochemical degradation.In the prior art, beta naphthal factory effluent is adopted to extracting treating method, but the method energy consumption and reagent consumption are huge, do not relate to the wherein recovery respectively of salt.The inventor thinks, if can process beta naphthal factory effluent with energy-saving manner, and reclaims respectively 2-sodium naphthalene sulfonate and sodium sulfate in beta naphthal factory effluent, can realize the benign cycle of wastewater treatment.For example, the 2-sodium naphthalene sulfonate of recovery can be used as raw materials for production resource and puts in beta naphthal production process.
Summary of the invention
The present invention is directed to the defect or the deficiency that in prior art, exist, a kind of beta naphthal production wastewater treatment method is provided, adopt the method to process beta naphthal factory effluent with energy-saving manner, reclaim respectively 2-sodium naphthalene sulfonate and sodium sulfate in beta naphthal factory effluent, particularly 2-sodium naphthalene sulfonate wherein can be used as raw materials for production resource and puts in beta naphthal production process, thereby realizes the benign cycle of wastewater treatment.
Technical scheme of the present invention is as follows:
Beta naphthal production wastewater treatment method, it is characterized in that, comprise the following steps: A. utilizes the 2-sodium naphthalene sulfonate solubleness in beta naphthal factory effluent to be less than the feature of other salinities, concentrated beta naphthal factory effluent, obtain the solidliquid mixture that comprises first mother liquor and 2-sodium naphthalene sulfonate solid, described 2-sodium naphthalene sulfonate solid is still dissolved in described first mother liquor for preferentially separating out other salinities of salinity, described solidliquid mixture is sent into the first magma tank and separate 2-sodium naphthalene sulfonate solid and the first mother liquor in described solidliquid mixture by the centrifugation of the first separating device, reclaim 2-sodium naphthalene sulfonate solid, described being concentrated in the first single-effect evaporator carried out, when beta naphthal factory effluent enters after the first single-effect evaporator, described beta naphthal factory effluent surface is in the negative pressure being formed by vacuum pump, produce secondary steam by heating steam heating beta naphthal factory effluent to the boiling passing in the first single-effect evaporator, described secondary steam input vapour compressor is compressed to obtain supercharging and intensification, the secondary steam of supercharging and intensification is input in described the first single-effect evaporator and substitutes described heating steam, B. described first mother liquor is input in the second single-effect evaporator and concentrates, obtain the solidliquid mixture that comprises circulating mother liquor and sodium sulfate solid, described solidliquid mixture is sent into the second magma tank and separate sodium sulfate solid and the circulating mother liquor in described solidliquid mixture by the centrifugation of the second separating device, reclaim(ed) sulfuric acid sodium solid, when first mother liquor enters after the second single-effect evaporator, described first mother liquor surface is in the negative pressure being formed by vacuum pump, be heated to first mother liquor boiling by the heating steam in the second single-effect evaporator again and produce secondary steam, described secondary steam input vapour compressor is compressed to obtain supercharging and intensification, the secondary steam of supercharging and intensification is input in described the second single-effect evaporator and substitutes described heating steam, C. described circulating mother liquor turns back in the second single-effect evaporator and again concentrates together with described first mother liquor.
Described the first separating device and the second separating device include whizzer.
In steps A, described solidliquid mixture is before separation, and the processing of lowering the temperature, makes 2-sodium naphthalene sulfonate solid in described solidliquid mixture increase the rate of recovery because of further crystallization.
Described heating steam >=120 ℃.
The water of condensation forming after heat exchange condensation as the secondary steam of heating steam, its COD≤500mg/L.
Initial temperature >=90 ℃ of described water of condensation, are inputted preheating material system material are carried out directly exporting sewage work to after preheating.
Salinity weight content in described beta naphthal factory effluent is 8~12%, and wherein the weight content of 2-sodium naphthalene sulfonate is 1.5~3%.
Content meter is all >=95% by weight for the 2-sodium naphthalene sulfonate solid purity of separating.
The salinity weight content of the initial mother liquor of separating is 16~25%.
During described cooling is processed, by initial mother liquor temperature from≤95 ℃ be down to≤38 ℃.
The salinity weight content of the circulating mother liquor of separating is 28~34%.
Technique effect of the present invention is as follows: beta naphthal production wastewater treatment method of the present invention is to utilize fully continuously the energy-saving manner of secondary steam, can reclaim respectively 2-sodium naphthalene sulfonate and sodium sulfate in beta naphthal factory effluent, particularly 2-sodium naphthalene sulfonate wherein can be used as raw materials for production resource and puts in beta naphthal production process, makes beta naphthal production wastewater treatment enter the benign cycle that produces real economy benefit.
Utilize negative pressure, can effectively reduce the boiling point of beta naphthal factory effluent.Vacuum tightness is higher, and the boiling point of general beta naphthal factory effluent is lower, is more conducive to utilize safely and efficiently heating steam and/or the secondary steam as heating steam.As the secondary steam of heating steam, the purifying treatment in early stage to beta naphthal factory effluent on the one hand, COD≤the 500mg/L of its water of condensation, the heat of secondary steam is used to again in the generation of follow-up secondary steam on the other hand, fresh heating steam is consumed few, generally only for unloading phase, the operation phase only need minute quantity supplement.
Embodiment
Below in conjunction with embodiment, the present invention will be described.
Embodiment 1: reach ten thousand tons of above users for beta naphthal product production capacity, implement beta naphthal production wastewater treatment method of the present invention, can from factory effluent, obtain 3~4 tons of the 2-sodium naphthalene sulfonates of higher degree every day, be back to beta naphthal and produced, be equivalent to realize every day 20,000 yuan of above incomes; Can obtain a large amount of sodium sulfate every day from factory effluent, 12 tons of left and right, and annual take-away can obtain 600,000 yuan, completely can the operation of counteracting equipment, artificial and necessary maintenance cost.
2-sodium naphthalene sulfonate is canescence crystallization or powder, water-soluble, is insoluble to alcohol, and its purposes comprises for organic synthesis or as the emulsifying agent of gelatin etc.Salinity gross weight content in beta naphthal factory effluent is in about 10-15%, and 2-naphthalene sulfonate salt weight content is 1.5~2.5%, sodium sulfate with the weight content of a small amount of S-WAT sum about 8.5-12.5%%.The solubleness of 2-sodium naphthalene sulfonate in water is in 3% left and right, and less with fluctuating temperature.Sodium sulfate is soluble in water, and the solubleness in 20 ℃ of water is in 20g/100ml left and right, and the solubleness in 30 ℃ of water is in 40g/100ml left and right.Due to the solubleness of 2-sodium naphthalene sulfonate in water much smaller than sodium sulfate and S-WAT the solubleness in water, therefore in the time that 2-sodium naphthalene sulfonate is separated out from beta naphthal factory effluent concentrated, for example under the temperature condition of 32~35 ℃, separate out in a large number 2-sodium naphthalene sulfonate, sodium sulfate and S-WAT can not be separated out.
Beta naphthal production wastewater treatment method, comprise the following steps: A. utilizes the 2-sodium naphthalene sulfonate solubleness in beta naphthal factory effluent to be less than the feature of other salinities, concentrated beta naphthal factory effluent, obtain the solidliquid mixture that comprises first mother liquor and 2-sodium naphthalene sulfonate solid, described 2-sodium naphthalene sulfonate solid is still dissolved in described first mother liquor for preferentially separating out other salinities of salinity, described solidliquid mixture is sent into the first magma tank and separate 2-sodium naphthalene sulfonate solid and the first mother liquor in described solidliquid mixture by the centrifugation of the first separating device, reclaim 2-sodium naphthalene sulfonate solid, described being concentrated in the first single-effect evaporator carried out, when beta naphthal factory effluent enters after the first single-effect evaporator, described beta naphthal factory effluent surface is in the negative pressure being formed by vacuum pump, produce secondary steam by heating steam heating beta naphthal factory effluent to the boiling passing in the first single-effect evaporator, described secondary steam input vapour compressor is compressed to obtain supercharging and intensification, the secondary steam of supercharging and intensification is input in described the first single-effect evaporator and substitutes described heating steam, B. described first mother liquor is input in the second single-effect evaporator and concentrates, obtain the solidliquid mixture that comprises circulating mother liquor and sodium sulfate solid, described solidliquid mixture is sent into the second magma tank and separate sodium sulfate solid and the circulating mother liquor in described solidliquid mixture by the centrifugation of the second separating device, reclaim(ed) sulfuric acid sodium solid, when first mother liquor enters after the second single-effect evaporator, described first mother liquor surface is in the negative pressure being formed by vacuum pump, be heated to first mother liquor boiling by the heating steam in the second single-effect evaporator again and produce secondary steam, described secondary steam input vapour compressor is compressed to obtain supercharging and intensification, the secondary steam of supercharging and intensification is input in described the second single-effect evaporator and substitutes described heating steam, C. described circulating mother liquor turns back in the second single-effect evaporator and again concentrates together with described first mother liquor.Described the first separating device and the second separating device include whizzer.In steps A, described solidliquid mixture is before separation, and the processing of lowering the temperature, makes 2-sodium naphthalene sulfonate solid in described solidliquid mixture increase because of further crystallization.Described heating steam >=120 ℃.The water of condensation forming after heat exchange condensation as the secondary steam of heating steam, its COD≤500mg/L.Initial temperature >=90 ℃ of described water of condensation, are inputted preheating material system material are carried out directly exporting sewage work to after preheating.Salinity weight content in described beta naphthal factory effluent is 8~12%, and wherein the weight content of 2-sodium naphthalene sulfonate is 1.5~3%.Content meter is all >=95% by weight for the 2-sodium naphthalene sulfonate solid purity of separating.The salinity weight content of the initial mother liquor of separating is 16~25%.During described cooling is processed, by initial mother liquor temperature from≤95 ℃ be down to≤38 ℃.The salinity weight content of the circulating mother liquor of separating is 28~34%.
Indicate at this, above narration contributes to those skilled in the art to understand the invention, but and the protection domain of unrestricted the invention.Any do not depart from the invention flesh and blood to being equal to replacement, modifying and improve and/or delete numerous conforming to the principle of simplicity and the enforcement carried out of above narration, all fall into the protection domain of the invention.

Claims (11)

1. a beta naphthal production wastewater treatment method, it is characterized in that, comprise the following steps: A. utilizes the 2-sodium naphthalene sulfonate solubleness in beta naphthal factory effluent to be less than the feature of other salinities, concentrated beta naphthal factory effluent, obtain the solidliquid mixture that comprises first mother liquor and 2-sodium naphthalene sulfonate solid, described 2-sodium naphthalene sulfonate solid is still dissolved in described first mother liquor for preferentially separating out other salinities of salinity, described solidliquid mixture is sent into the first magma tank and separate 2-sodium naphthalene sulfonate solid and the first mother liquor in described solidliquid mixture by the centrifugation of the first separating device, reclaim 2-sodium naphthalene sulfonate solid, described being concentrated in the first single-effect evaporator carried out, when beta naphthal factory effluent enters after the first single-effect evaporator, described beta naphthal factory effluent surface is in the negative pressure being formed by vacuum pump, produce secondary steam by heating steam heating beta naphthal factory effluent to the boiling passing in the first single-effect evaporator, described secondary steam input vapour compressor is compressed to obtain supercharging and intensification, the secondary steam of supercharging and intensification is input in described the first single-effect evaporator and substitutes described heating steam, B. described first mother liquor is input in the second single-effect evaporator and concentrates, obtain the solidliquid mixture that comprises circulating mother liquor and sodium sulfate solid, described solidliquid mixture is sent into the second magma tank and separate sodium sulfate solid and the circulating mother liquor in described solidliquid mixture by the centrifugation of the second separating device, reclaim(ed) sulfuric acid sodium solid, when first mother liquor enters after the second single-effect evaporator, described first mother liquor surface is in the negative pressure being formed by vacuum pump, be heated to first mother liquor boiling by the heating steam in the second single-effect evaporator again and produce secondary steam, described secondary steam input vapour compressor is compressed to obtain supercharging and intensification, the secondary steam of supercharging and intensification is input in described the second single-effect evaporator and substitutes described heating steam, C. described circulating mother liquor turns back in the second single-effect evaporator and again concentrates together with described first mother liquor.
2. beta naphthal production wastewater treatment method according to claim 1, is characterized in that, described the first separating device and the second separating device include whizzer.
3. beta naphthal production wastewater treatment method according to claim 1, is characterized in that, in steps A, described solidliquid mixture is before separation, and the processing of lowering the temperature, makes 2-sodium naphthalene sulfonate solid in described solidliquid mixture increase because of further crystallization.
4. beta naphthal production wastewater treatment method according to claim 1, is characterized in that described heating steam >=120 ℃.
5. beta naphthal production wastewater treatment method according to claim 1, is characterized in that, the water of condensation forming after heat exchange condensation as the secondary steam of heating steam, its COD≤500mg/L.
6. beta naphthal production wastewater treatment method according to claim 5, is characterized in that, initial temperature >=90 ℃ of described water of condensation are inputted preheating material system material is carried out directly exporting sewage work to after preheating.
7. beta naphthal production wastewater treatment method according to claim 1, is characterized in that, the salinity weight content in described beta naphthal factory effluent is 8~12%, and wherein the weight content of 2-sodium naphthalene sulfonate is 1.5~3%.
8. beta naphthal production wastewater treatment method according to claim 1, is characterized in that, content meter is all >=95% by weight for the 2-sodium naphthalene sulfonate solid purity of separating.
9. beta naphthal production wastewater treatment method according to claim 1, is characterized in that, the salinity weight content of the initial mother liquor of separating is 16~25%.
10. beta naphthal production wastewater treatment method according to claim 1, is characterized in that, during described cooling is processed, by initial mother liquor temperature from≤95 ℃ be down to≤38 ℃.
11. beta naphthal production wastewater treatment methods according to claim 1, is characterized in that, the salinity weight content of the circulating mother liquor of separating is 28~34%.
CN201410055962.7A 2014-02-18 2014-02-18 2-naphthol production wastewater treatment method Active CN103787436B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410055962.7A CN103787436B (en) 2014-02-18 2014-02-18 2-naphthol production wastewater treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410055962.7A CN103787436B (en) 2014-02-18 2014-02-18 2-naphthol production wastewater treatment method

Publications (2)

Publication Number Publication Date
CN103787436A true CN103787436A (en) 2014-05-14
CN103787436B CN103787436B (en) 2014-12-24

Family

ID=50663562

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410055962.7A Active CN103787436B (en) 2014-02-18 2014-02-18 2-naphthol production wastewater treatment method

Country Status (1)

Country Link
CN (1) CN103787436B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104355475A (en) * 2014-11-13 2015-02-18 湖北华巳新能源环保工程有限公司 Method applied to treatment of G salt mother solution
CN105366746A (en) * 2015-11-10 2016-03-02 唐山宝翔化工产品有限公司 2-naphthol wastewater processing technology
CN109942377A (en) * 2019-04-11 2019-06-28 孙骜 The technique that mother liquor waste water recycles in naphthols production
CN111573943A (en) * 2020-03-22 2020-08-25 萧县沃德化工科技有限公司 Comprehensive treatment technology for 2-naphthol production wastewater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0547957A (en) * 1991-08-08 1993-02-26 Fujitsu Ltd Semiconductor device
CN1769191A (en) * 2005-09-05 2006-05-10 暨南大学 Bentonite base composite material for water treatment and its preparation method
CN1858010A (en) * 2006-04-17 2006-11-08 李阳 Processing method for mother solution and solium sulfite solution in naphthol production

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005029627A1 (en) * 2005-06-23 2007-01-04 Basf Ag Process for the production of leather

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0547957A (en) * 1991-08-08 1993-02-26 Fujitsu Ltd Semiconductor device
CN1769191A (en) * 2005-09-05 2006-05-10 暨南大学 Bentonite base composite material for water treatment and its preparation method
CN1858010A (en) * 2006-04-17 2006-11-08 李阳 Processing method for mother solution and solium sulfite solution in naphthol production

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
董少刚等: "2-萘酚生产对环境的影响及废水处理工艺研究", 《安全与环境工程》, vol. 12, no. 2, 30 June 2005 (2005-06-30) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104355475A (en) * 2014-11-13 2015-02-18 湖北华巳新能源环保工程有限公司 Method applied to treatment of G salt mother solution
CN104355475B (en) * 2014-11-13 2016-02-24 湖北华巳新能源环保工程有限公司 A kind for the treatment of process of G salt mother liquor
CN105366746A (en) * 2015-11-10 2016-03-02 唐山宝翔化工产品有限公司 2-naphthol wastewater processing technology
CN109942377A (en) * 2019-04-11 2019-06-28 孙骜 The technique that mother liquor waste water recycles in naphthols production
CN109942377B (en) * 2019-04-11 2022-04-15 孙骜 Process for recycling mother liquor wastewater in naphthol production
CN111573943A (en) * 2020-03-22 2020-08-25 萧县沃德化工科技有限公司 Comprehensive treatment technology for 2-naphthol production wastewater

Also Published As

Publication number Publication date
CN103787436B (en) 2014-12-24

Similar Documents

Publication Publication Date Title
CN103787436B (en) 2-naphthol production wastewater treatment method
CN105540619A (en) Method for directly preparing battery grade lithium carbonate from salt lake brine with high magnesium-to-lithium ratio
CN103553138B (en) Comprehensive utilization method for separating, concentrating and purifying manganese sulfate, magnesium sulfate and calcium sulfate in high-salt waste water
CN103819041A (en) Method for concentrating high-salinity wastewater at low temperature
CN104628664A (en) Method for continuously producing benzotriazole
CN106746136A (en) The technique of zero discharge and system of a kind of desulfurization wastewater
CN101665297B (en) Waste water treatment method in 1-naphthylamine-4-sodium sulfonate production process
CN105502438B (en) The highly concentrated saline treatment method and apparatus of coal chemical industry
CN204910804U (en) Ammonium sulfate solution evaporation crystallization equipment
CN103804238B (en) Method of recovering 2-sodium naphthalenesulfonate from 2-isonaphthol production wastewater
CN103880211A (en) Process for resourceful treatment of high-salt wastewater containing magnesium
CN106082516A (en) A kind of point of salt-pepper noise technique and device
CN103086559A (en) Device and method for zinc sulfate wastewater crystal separation treatment
CN203425552U (en) Concentration and crystallization equipment for sodium sulfite
CN102145902A (en) Method for producing high-quality potassium chloride
CN204824207U (en) Sodium sulphate solution evaporation crystallization equipment
CN204891247U (en) Sodium nitrate solution evaporation crystallization equipment
CN204999762U (en) Concentrated crystallization equipment of carnallite waste water
CN203935630U (en) Multi-effect evaporation system evaporation condensed water heat energy recycling device
CN104710069B (en) Method for recycling waste heat power generation tail steam in smelting plant
CN204151087U (en) The gathering system of single nickel salt in decopper(ing) waste liquid
CN102992551A (en) Method for treating high-concentration wastewater efficiently
CN205241429U (en) Vulcanization accelerator NS contains processing apparatus of salt waste water
CN106629941A (en) Nickel-bearing wastewater treatment system
CN211688873U (en) Low-concentration DMF concentration recovery system

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CP03 Change of name, title or address

Address after: 100071 room 801, 8th floor, building 2, yard 8, Automobile Museum West Road, Fengtai District, Beijing

Patentee after: SINOCHEM ENVIRONMENTAL HOLDINGS Ltd.

Address before: 21 / F, Sinochem building, A2 Fuxingmenwai street, Xicheng District, Beijing 100045

Patentee before: SINOCHEM ENERGY SAVING ENVIRONMENTAL PROTECTION HOLDING (BEIJING) Co.,Ltd.

CP03 Change of name, title or address