CN201132075Y - Solvent recovery system in pharmacy - Google Patents
Solvent recovery system in pharmacy Download PDFInfo
- Publication number
- CN201132075Y CN201132075Y CNU2007201834788U CN200720183478U CN201132075Y CN 201132075 Y CN201132075 Y CN 201132075Y CN U2007201834788 U CNU2007201834788 U CN U2007201834788U CN 200720183478 U CN200720183478 U CN 200720183478U CN 201132075 Y CN201132075 Y CN 201132075Y
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- liquid
- liquid separator
- solvent
- dissolvent
- vapor
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Abstract
The utility model relates to a dissolvent recovering system in a pharmacy industry. The dissolvent recovering system comprises a raw material tank for holding liquid state dissolvent, and a condenser and a vapor liquid separator connected at the vapor discharging opening of the raw material tank in series and in sequence. The dissolvent recovering system is mainly characterized in that a liquid ring pump is connected at the vapor discharging opening of the vapor liquid separator, a secondary condenser and a secondary vapor liquid separator are connected at the output opening of the liquid ring pump in series and in sequence, a liquid discharging opening of the secondary vapor liquid separator is connected to a working liquid input opening of the liquid ring pump, a recovering tank is connected at the other liquid discharging opening, and a condensational jacket is packaged outside the recovering tank. The dissolvent recovering system has the advantages that not only the frequency of condensation and vapor liquid separation of the dissolvent vapor is increased, but also the condensing pressure during the second condensation process is increased, so that the recovery ratio of the dissolvent can be remarkably is improved, the wastage of the dissolvent is reduced, not only the production cost of the pharmacy industry is reduced, but also the environmental pollution is decreased.
Description
Technical field
The utility model relates to pharmaceutical industry, the solvent recovery system that particularly in pharmacy procedure solvent is reclaimed.
Background technology
The solvent that uses in the pharmacy procedure is a kind of catalyst.In order to reduce production costs and to reduce environmental pollution, need reclaim solvent with the solvent recovery system.In the prior art, the solvent recovery system in the pharmacy industry adopts water stream injection pump as ordering about the power source that solvent steam flows.From head tank, extract the required negative pressure of solvent steam, and order about vapor stream and cross condenser and the required pressure differential of vapour liquid separator, all provide by water stream injection pump.Bring following shortcoming thus: solvent steam is in negative pressure state in condenser, condensing pressure is lower, is unfavorable for the condensation of steam, and the solvent rate of recovery is low; Be subjected to the restriction of water stream injection pump operation principle, the solvent steam of separating from vapour liquid separator has to contact mixing with water after arriving water stream injection pump, and this part solvent steam is difficult to recycle once more, can only abandon, and not only causes waste also to pollute the environment.
The utility model content
The purpose of this utility model provides a kind of solvent recovery system that is applicable to pharmacy industry, to improve the solvent rate of recovery of pharmacy industry.
For this reason, solvent recovery system described in the utility model comprises the head tank of the liquid solvent of splendid attire, the steam outlet of head tank is in series with condenser and vapour liquid separator successively, it is characterized in that: the steam outlet of vapour liquid separator is connected to the input port of liquid rotary pump, the delivery outlet of liquid rotary pump is in series with after-condenser and secondary vapour liquid separator successively, a liquid outlet of secondary vapour liquid separator is connected to the working solution input port of liquid rotary pump, another liquid outlet connects recycling can, the outside of recycling can is surrounded by the condensation chuck, described liquid rotary pump with solvent as working solution.Because the utility model has replaced water stream injection pump in the existing solvent recovery system with liquid rotary pump, and after-condenser and secondary vapour liquid separator have been set up, so not only increased the number of times that solvent steam is carried out condensation and vapor-liquid separation, and in the time condensation process, steam pressure in the condenser is upgraded to malleation by negative pressure, condensing pressure is higher, helps the condensation of steam, thereby can significantly improve the solvent rate of recovery.
The utility model has the advantages that and improved the solvent rate of recovery in the pharmacy procedure, reduced the solvent waste, not only reduced the production cost of pharmacy industry, and reduced environmental pollution.On the other hand,, and, do not pollute, be applicable to the recovery of the various solvents in the pharmacy industry so can not produce to solvent with the working solution of solvent as liquid rotary pump because the utility model has adopted liquid rotary pump, easy to utilize.
Description of drawings
Fig. 1 is the system construction drawing of the utility model embodiment.
The specific embodiment
Solvent recovery system shown in Figure 1 comprises a head tank 1 that is used for the liquid solvent of splendid attire, and the steam outlet of head tank 1 is in series with condenser 2 and vapour liquid separator 3 successively.The steam outlet of vapour liquid separator 3 is connected to the input port of liquid rotary pump 4.The liquid outlet of vapour liquid separator 3 connects recycling can 5.The delivery outlet of liquid rotary pump 4 is in series with after-condenser 6 and secondary vapour liquid separator 7 successively.A liquid outlet of secondary vapour liquid separator 7 is connected to the working solution input port of liquid rotary pump 4, make liquid rotary pump 4 with solvent as working solution, another liquid outlet connects recycling can 8.The outside of recycling can 8 is surrounded by condensation chuck 13, is perfused with mobile cooling fluid in the condensation chuck 13.Condenser 2 and after-condenser 6 all can adopt salt solution as refrigerant.In order further to improve the rate of recovery of solvent, present embodiment also is in series with demister 9 and tail gas recycle jar 10 successively at the steam outlet of secondary vapour liquid separator 7.Under the seizure effect of demister 9, more solvent is flow back in the secondary vapour liquid separator 7.Tail gas recycle jar 10 makes steam flow speed slow down, thereby can further reclaim the solvent steam in the tail gas.Demister 9 and tail gas recycle jar 10 all can adopt commercially available finished product.Tail gas recycle jar 10 preferably adopts with the product of polymeric membrane as filter core, and polymeric membrane can almost completely be separated the fine droplet in the steam.The temperature because the working solution of liquid rotary pump 4 can raise in the course of the work gradually, be unfavorable for the condensation of solvent steam, so as further improving, present embodiment is in series with cooler 11 between the working solution input port of the liquid outlet of secondary vapour liquid separator 7 and liquid rotary pump 4.Dependence cooler 11 cools off the solvent liquid as working solution, helps lend some impetus to the condensation in after-condenser 6 of solvent steam.
Some other additional device in the system also comprises: the circle that indicates " T " is a thermometer; The circle that indicates " P " is a Pressure gauge; The circle that indicates " LI " is a liquid level gauge; The normally close valve 12 that is connected on the recycling can 5,8 is used to emit the interior solvent liquid of recycling can; The outside of recycling can 5 also is surrounded by condensation chuck 13 as recycling can 8, also is perfused with mobile cooling fluid in the condensation chuck 13; The normally open valve 14 that is connected with vapour liquid separator 3 is used for when maintenance vapour liquid separator 3 and recycling can 5 being separated; The normally open valve 15 that is connected between vapour liquid separator 3 and the liquid rotary pump 4 is used for when maintenance vapour liquid separator 3 and liquid rotary pump 4 being separated; Be connected the normally close valve 16 between liquid rotary pump 4 and the secondary vapour liquid separator 7, be used to regulate the inlet vacuum of liquid rotary pump 4, when the inlet vacuum of liquid rotary pump is too high, open this valve, can reduce inlet vacuum to certain aperture; The normally open valve 17 that is connected cooler 11 two ends is used for when maintenance cooler 11 being separated; Be connected the normally close valve 18 between secondary vapour liquid separator 7 and the recycling can 8, be used for the liquid of emptying secondary vapour liquid separator 7 when maintenance; Be connected two normally open valve 19a, 19b between secondary vapour liquid separator 7 and the recycling can 8, be used for when maintenance, secondary vapour liquid separator 7 and recycling can 8 being separated, wherein the pipeline that connected of normally open valve 19b is an equalizing line, the effect of equalizing line is: when the liquid of separating from secondary vapour liquid separator 7 flow into the recycling can 8, gas pressure in the recycling can 8 increases thereupon, the gas of compression flow back in the secondary vapour liquid separator 7 by equalizing line, has guaranteed to flow into smoothly the recycling can 8 from the liquid that secondary vapour liquid separator 7 is separated; Be connected the U type pipe 20 between secondary vapour liquid separator 7 and the normally open valve 19a, be used to guarantee that the liquid level in the secondary vapour liquid separator 7 has certain altitude.
Below in conjunction with description of drawings operation principle of the present utility model.Under the swabbing action of liquid rotary pump 4, form negative pressure in the head tank 1, the boiling point of the liquid solvent in the head tank 1 reduces, and is easy to be heated to boiling and forms a large amount of steam.Solvent steam passes through condenser 2 and vapour liquid separator 3 successively after head tank 1 comes out.The cooling of solvent steam forms moist steam in condenser 2.In vapour liquid separator 3, drop and steam in the moist steam are separated.The solvent liquid of separating from vapour liquid separator 3 flows into recycling can 5, and the cooling fluid in the condensation chuck 13 helps to enter the further condensation of a small amount of solvent steam in the recycling can 5; Pumped to liquid rotary pump 4 from the solvent steam that vapour liquid separator 3 is separated.Solvent steam raises through liquid rotary pump 4 back pressure.Solvent steam after pressure raises passes through after-condenser 6 and secondary vapour liquid separator 7 successively under the positive pressure of liquid rotary pump 4.In after-condenser 6, solvent steam under higher pressure once more condensation form moist steam.In secondary vapour liquid separator 7, drop in the moist steam and steam are separated once more.After the solvent steam of separating from secondary vapour liquid separator 7 enters demister 9, have only the small solvent liquid pearl of minute quantity can pass through demister 9, most solvent liquid pearl convergence flow is got back in the secondary vapour liquid separator 7.Solvent steam through tail gas recycle jar 10 after, the small liquid integument of carrying secretly in the steam further separates, what discharge from tail gas recycle jar 10 at last is minute quantity solvent steam and a large amount of incondensable gases such as air.Meanwhile, isolated solvent liquid flows into recycling can 8 on the one hand from secondary vapour liquid separator 7, on the other hand after subcooler 11 cooling, feeds back to liquid rotary pump 4 from the working solution input port of liquid rotary pump 4, thereby has guaranteed liquid rotary pump 4 continuous firings.Cooling fluid in the condensation chuck 13 helps to enter the further condensation of a small amount of solvent steam in the recycling can 8.The solvent liquid that recycling can 5 and recycling can 8 are collected can be for recycling.
Claims (3)
1, the solvent recovery system in the pharmacy industry, the head tank that comprises the liquid solvent of splendid attire, the steam outlet of head tank is in series with condenser and vapour liquid separator successively, it is characterized in that: the steam outlet of vapour liquid separator is connected to the input port of liquid rotary pump, the delivery outlet of liquid rotary pump is in series with after-condenser and secondary vapour liquid separator successively, a liquid outlet of secondary vapour liquid separator is connected to the working solution input port of liquid rotary pump, another liquid outlet connects recycling can, the outside of recycling can is surrounded by the condensation chuck, described liquid rotary pump with solvent as working solution.
2, solvent recovery system as claimed in claim 1 is characterized in that: the steam outlet at the secondary vapour liquid separator is in series with demister and tail gas recycle jar successively.
3, solvent recovery system as claimed in claim 1 is characterized in that: be in series with cooler between the working solution input port of the liquid outlet of secondary vapour liquid separator and liquid rotary pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201834788U CN201132075Y (en) | 2007-12-03 | 2007-12-03 | Solvent recovery system in pharmacy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201834788U CN201132075Y (en) | 2007-12-03 | 2007-12-03 | Solvent recovery system in pharmacy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201132075Y true CN201132075Y (en) | 2008-10-15 |
Family
ID=40060349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201834788U Expired - Fee Related CN201132075Y (en) | 2007-12-03 | 2007-12-03 | Solvent recovery system in pharmacy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201132075Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120093A (en) * | 2010-12-28 | 2011-07-13 | 南京工业大学 | Solvent recovery process in pharmaceutical industry |
-
2007
- 2007-12-03 CN CNU2007201834788U patent/CN201132075Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120093A (en) * | 2010-12-28 | 2011-07-13 | 南京工业大学 | Solvent recovery process in pharmaceutical industry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20141203 |
|
| EXPY | Termination of patent right or utility model |