CN103030184A - Water treatment solvent recovery method - Google Patents
Water treatment solvent recovery method Download PDFInfo
- Publication number
- CN103030184A CN103030184A CN201210521005XA CN201210521005A CN103030184A CN 103030184 A CN103030184 A CN 103030184A CN 201210521005X A CN201210521005X A CN 201210521005XA CN 201210521005 A CN201210521005 A CN 201210521005A CN 103030184 A CN103030184 A CN 103030184A
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- CN
- China
- Prior art keywords
- heat exchanger
- water treatment
- recovery method
- solvent recovery
- reboiler
- 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.)
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
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- Extraction Or Liquid Replacement (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a water treatment solvent recovery method which is composed of a tubular heat exchanger, a reboiler, a rectifying still and a rotating board heat exchanger. Wastewater enters into the tubular heat exchanger through a liquid conveying pump, to separate a volatile solvent in the wastewater by the heat effect of the heat exchanger; by the reboiler, a separation of gas and liquid phases is realized, wherein the solvent component is recovered by the rotating board heat exchanger while the wastewater part in the liquid phase is further degraded and treated in the rectifying still. Thus, while treating the industrial wastewater, the solvent in the wastewater can be directly recycled; and the entire process is simple and compact in process.
Description
Technical field
The invention discloses a kind of water treatment solvent recovery method, belong to sewage treatment area.
Background technology
The solvent recovery is the important procedure in pharmaceutical industry, the Printing ink producing, and the organic solvents such as the extraction agent that uses in drug manufacture, treating process, washing composition, reagent can be reused through reclaiming the processing of link.Do not reclaim if do not carry out solvent, cause on the one hand environmental pollution, production cost improves on the other hand.In order to make the solvent recycle, water and trace drug composition must be removed.Traditional technology is normally removed solid impurity in the useless solvent by distillation first, and then remove part moisture in the useless solvent by rectifying, adopt again azeotropic distillation from rectifying tower solvent and the azeotrope that forms of water out, thereby the moisture that the technology such as extracting rectifying and the dehydration of sheet alkali further remove wherein reaches the quality product requirement that reuses, the common ground of these technology is all to need material system to be drained off is vaporized fully, the latent heat of phase change of its consumption is huge, high energy consumption causes running cost high, and these methods all exist and roll up another material (generally being poisonous and hazardous material) have hazard to person and problem of environmental pollution in production operation.This solvent recovery method complicated operation simultaneously, labour cost is corresponding higher, and the solvent recovery utilization rate is low.In order to reduce solvent recovery energy consumption, improve the solvent organic efficiency, simplify operational path, improve the quality product of solvent, reduce production costs, JP is sent cleaning, the efficient solvent recovery technique that the application's patent proposes.
Summary of the invention
For existing the deficiencies in the prior art, the invention provides a kind of water treatment solvent recovery method, the method is by being comprised of tubular heat exchanger, reboiler, rectifying still and swivel plate interchanger four partial devices.Waste water enters in the tubular heat exchanger through infusion pump, utilizes the exchanger heat effect to separate volatile molten coal in the waste water; Realize that through reboiler liquid phase separates, wherein molten coal component reclaims by the swivel plate interchanger, and the waste water of liquid phase part is in the further degradation treatment of rectifying still.
The technical solution used in the present invention is: the present invention is comprised of tubular heat exchanger, reboiler, rectifying still and swivel plate interchanger four partial devices.
Sealing must be adopted asbestos outsourcing PTFE gasket on the described interchanger, with anti-organic solvent and soda acid etc.
Described solvent comprises chloroform, acetone, ethanol, DMF, hydrogenchloride ethanol, hydrochloric acid, sodium hydroxide and solution thereof etc.
Adopt tubular heat exchanger, swivel plate interchanger to realize that volatile molten coal separates with the liquid phase of liquid waste water; Adopt reboiler, rectifying still, can process the organic pollutant in the waste water.
Advantageous characteristic of the present invention is: when carrying out Industrial Wastewater Treatment, and the directly recycling of molten coal in the waste water, the integrated artistic flow process is simply compact, has good economic worth and the value of environmental protection.
Specific examples
Example one: extract ethanolic soln and carry through suction pump from aqueous ethanolic solution, enter tubular heat exchanger, under the tubular heat exchanger heats, evaporation enters reboiler, and reaches vapor liquid equilibrium here, and the ethanol after the separation is collected through the swivel plate interchanger.When heat exchange power is fixed on 2000w, when reaction solution was 10% ethanolic soln of 800ml, when regulating suction pump turn up 60r/min, the ethanol rate of recovery was 70%.
Example two: extract ethanolic soln and carry through suction pump from aqueous ethanolic solution, enter tubular heat exchanger, under the tubular heat exchanger heats, evaporation enters reboiler, and reaches vapor liquid equilibrium here, and the ethanol after the separation is collected through the swivel plate interchanger.When heat exchange power is fixed on 2500w, when reaction solution was 15% ethanolic soln of 1000ml, when regulating suction pump turn up 70r/min, the ethanol rate of recovery was 80%.
Example three: extract ethanolic soln and carry through suction pump from aqueous ethanolic solution, enter tubular heat exchanger, under the tubular heat exchanger heats, evaporation enters reboiler, and reaches vapor liquid equilibrium here, and the ethanol after the separation is collected through the swivel plate interchanger.When heat exchange power is fixed on 3000w, when reaction solution was 8% ethanolic soln of 2000ml, when regulating suction pump turn up 80r/min, the ethanol rate of recovery was 85%.
Claims (4)
1. water treatment solvent recovery method, it is characterized in that: the method is comprised of tubular heat exchanger, reboiler, rectifying still and swivel plate interchanger four partial devices.
2. a kind of water treatment solvent recovery method according to claim 1 is characterized in that: seal on the described interchanger and must adopt asbestos outsourcing PTFE gasket, with anti-organic solvent and soda acid etc.
3. a kind of water treatment solvent recovery method according to claim 1, it is characterized in that: described solvent comprises chloroform, acetone, ethanol, DMF, hydrogenchloride ethanol, hydrochloric acid, sodium hydroxide and solution thereof etc.
4. a kind of water treatment solvent recovery method according to claim 1 is characterized in that: adopt tubular heat exchanger, swivel plate interchanger to realize that volatile molten coal separates with the liquid phase of liquid waste water; Adopt reboiler, rectifying still, can process the organic pollutant in the waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521005XA CN103030184A (en) | 2012-11-27 | 2012-11-27 | Water treatment solvent recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210521005XA CN103030184A (en) | 2012-11-27 | 2012-11-27 | Water treatment solvent recovery method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103030184A true CN103030184A (en) | 2013-04-10 |
Family
ID=48017644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210521005XA Pending CN103030184A (en) | 2012-11-27 | 2012-11-27 | Water treatment solvent recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103030184A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114229932A (en) * | 2021-11-23 | 2022-03-25 | 安徽金禾实业股份有限公司 | Device and method for treating acidic wastewater in chloroethane production |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139117A (en) * | 2007-08-17 | 2008-03-12 | 中国石油化工集团公司 | Technique for processing wastewater containing methanol and dimethyl ether |
| CN201704236U (en) * | 2010-05-24 | 2011-01-12 | 中国石油天然气股份有限公司 | Ethylene glycol regenerating device |
| CN201832625U (en) * | 2010-11-07 | 2011-05-18 | 新疆石油勘察设计研究院（有限公司） | Ethylene glycol regenerating unit |
-
2012
- 2012-11-27 CN CN201210521005XA patent/CN103030184A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139117A (en) * | 2007-08-17 | 2008-03-12 | 中国石油化工集团公司 | Technique for processing wastewater containing methanol and dimethyl ether |
| CN201704236U (en) * | 2010-05-24 | 2011-01-12 | 中国石油天然气股份有限公司 | Ethylene glycol regenerating device |
| CN201832625U (en) * | 2010-11-07 | 2011-05-18 | 新疆石油勘察设计研究院（有限公司） | Ethylene glycol regenerating unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114229932A (en) * | 2021-11-23 | 2022-03-25 | 安徽金禾实业股份有限公司 | Device and method for treating acidic wastewater in chloroethane production |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |