CN108499155A - A method of increasing the solvent rate of recovery and reduces volatile organic compounds discharge - Google Patents
A method of increasing the solvent rate of recovery and reduces volatile organic compounds discharge Download PDFInfo
- Publication number
- CN108499155A CN108499155A CN201810164281.2A CN201810164281A CN108499155A CN 108499155 A CN108499155 A CN 108499155A CN 201810164281 A CN201810164281 A CN 201810164281A CN 108499155 A CN108499155 A CN 108499155A
- Authority
- CN
- China
- Prior art keywords
- recovery
- organic compounds
- increasing
- volatile organic
- material residue
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- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0292—Treatment of the solvent
- B01D11/0296—Condensation of solvent vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
Abstract
A kind of method for increasing the solvent rate of recovery and reducing volatile organic compounds discharge is before medicine, health products extraction link unload material residue after putting extracting solution, pass through the transformation to original extraction concentration pipeline, it heated, stirred, depressurized, condensed with existing equipment, to be recycled to the organic solvent in material residue, reach the discharge purpose for increasing the organic solvent rate of recovery and reduction volatile organic compounds (VOCs).
Description
Technical field
The extraction link that medicine, health products produce
Technical background
The recovery utilization rate of organic solvent is the important technology economic indicator of associated production enterprise, is related to the cost of enterprise
Benefit.In recent years, the discharge capacity of volatile organic compounds (VOCs) ramps, volatile organic compounds (VOCs) discharge
Control become the important topic that current China's air is administered.In the extraction process of the productions such as medicine, health products, need to use
A large amount of organic solvent has a certain number of volatile organic compounds (VOCs) discharge.The present invention is exactly organic to increase
The solvent rate of recovery reduces a kind of method that extraction link volatile organic compounds (VOCs) is discharged.
Invention content
Before drawing off material residue after extraction link releases extracting solution, a certain proportion of organic solvent is contained in material residue.This hair
It is bright that material residue in tank is heated using extractor conducting self-heating chuck, at the same borrow itself agitating device to the material residue of heating into
Row at the uniform velocity stirs, and is heated to certain temperature again to carrying out vacuum decompression in extractor, increases organic solvent evaporation rate in material residue,
Reduce organic solvent in material residue remaining ratio.Due to vacuum decompression, the organic solvent gas velocity being evaporated is accelerated, concentration
The concentration of organic solvent gas is evaporated when flowing back less than normal extraction.Because former extraction equipment condenser cooling surface is small, and do not have
The condensate cooler condensation area of mating vacuum line, concentrator is big, and has matched with vacuum pipeline, and the present invention is in former pipeline
It is middle to increase " evaporation solvent gas piping ", therefore the condensate cooler of concentrator is selected, carry out being condensed back to for organic solvent gas
It receives.Discharging slag is carried out after material residue drying, to make extraction process be optimized, the present invention only changes original pipeline
It makes, investment is low, has certain economic benefit, and reached following effect：
One, material residue in extraction equipment is heated, the condensate cooler condensing recovery of vacuum decompression, concentrated equipment,
A certain amount of organic solvent can be obtained, improve the rate of recovery of organic solvent；
Two, the raising of the organic solvent rate of recovery reaches environment to reduce the discharge of volatile organic compounds (VOCs)
It protects, the purpose of green production.
Description of the drawings
Fig. 1 is that extraction link increases the organic solvent rate of recovery and reduces in volatile organic compounds (VOCs) discharge method
Increased pipeline (evaporation solvent gas piping) and process route flow diagram.
Specific implementation method
Extraction uses general connection, only increases the organic solvent rate of recovery and drop to the extraction link of medicine, health products production
The remodeling method of low VOC (VOCs) discharge and technological operation are described.
With reference to attached drawing, this method increases " evaporation solvent gas by concentrating pipeline transformation to original extraction in original pipeline
Body pipeline ", and directly using original extraction, the heating of concentrator, stirring, decompression, condensation to containing certain organic solvent
Material residue is handled.It increases the organic solvent rate of recovery, reduce extraction link volatile organic compounds (VOCs) discharge.
It after extracting solution tapping, carries out before unloading material residue, closes valve 1, open valve 2, close valve 4, open valve
Door 3；Steam valve 5 is opened, stirring motor a is opened, certain temperature is heated to and opens vacuum valve 6, allow by heating stirring
The organic solvent gas that material residue evaporates is returned after " evaporation solvent gas piping " by the condensate cooler of concentrator
It receives to solvent receiver 7.This flow completes the drying of material residue, the recycling of organic solvent.
The present invention can only be described in an experiment with functional character, operating process, equipment pipeline transformation.Because extraction produces
The factor of middle influence is more, some parameters are not easy to realize Comparative and Quantitative Analysis.General Influence because being known as：It is material variety, organic
Indices control in solvent classification, production process, operating personnel are horizontal, production hardware condition etc., multinomial dynamic because
Element makes data comparison be not easy to realize.
Claims (3)
1. a kind of method for increasing the solvent rate of recovery and reducing volatile organic compounds discharge, by original extraction concentration tube
The transformation on road increases " evaporation solvent gas piping " in pipeline, and original extraction, concentrator are directly utilized before unloading material residue
Heating, stirring, decompression, condensation handle the material residue containing certain organic solvent.It is characterized in that：Using it is original extraction,
Concentrator handles material residue and the organic solvent gas being evaporated.
2. the method for increasing the solvent rate of recovery as described in claim 1 and reducing volatile organic compounds discharge.Its feature
It is：Increase in original pipeline " evaporation solvent gas piping ".
3. the method for increasing the solvent rate of recovery as described in claim 1 and reducing volatile organic compounds discharge.Its feature
It is：The organic solvent gas being evaporated in the dregs of a decoction is to carry out condensing recovery by concentrator condensate cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164281.2A CN108499155A (en) | 2018-02-28 | 2018-02-28 | A method of increasing the solvent rate of recovery and reduces volatile organic compounds discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164281.2A CN108499155A (en) | 2018-02-28 | 2018-02-28 | A method of increasing the solvent rate of recovery and reduces volatile organic compounds discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108499155A true CN108499155A (en) | 2018-09-07 |
Family
ID=63375733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810164281.2A Pending CN108499155A (en) | 2018-02-28 | 2018-02-28 | A method of increasing the solvent rate of recovery and reduces volatile organic compounds discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108499155A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686691Y (en) * | 2004-04-08 | 2005-03-23 | 章方龙 | Solvent recovery apparatus for medicine extraction process |
| CN101972551A (en) * | 2010-09-16 | 2011-02-16 | 花垣恒远植物生化有限责任公司 | Method for recovering and extracting solvent in slag |
| CN202682804U (en) * | 2012-07-11 | 2013-01-23 | 贵州苗药药业有限公司 | Recovering hot reflux extraction and concentration production line for residual medicine dreg solution |
| CN103520949A (en) * | 2013-10-15 | 2014-01-22 | 四川省砚山中药饮片有限公司 | Complete equipment for continuous counter-current ultrasonic extraction |
-
2018
- 2018-02-28 CN CN201810164281.2A patent/CN108499155A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686691Y (en) * | 2004-04-08 | 2005-03-23 | 章方龙 | Solvent recovery apparatus for medicine extraction process |
| CN101972551A (en) * | 2010-09-16 | 2011-02-16 | 花垣恒远植物生化有限责任公司 | Method for recovering and extracting solvent in slag |
| CN202682804U (en) * | 2012-07-11 | 2013-01-23 | 贵州苗药药业有限公司 | Recovering hot reflux extraction and concentration production line for residual medicine dreg solution |
| CN103520949A (en) * | 2013-10-15 | 2014-01-22 | 四川省砚山中药饮片有限公司 | Complete equipment for continuous counter-current ultrasonic extraction |
Non-Patent Citations (1)
| Title |
|---|
| 刘培保: "多功能提取罐在回收残渣中有机溶剂的应用", 《通用机械》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180907 |
|
| WD01 | Invention patent application deemed withdrawn after publication |