CN207445643U - The recovery system of low boiling point solvent - Google Patents
The recovery system of low boiling point solvent Download PDFInfo
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- CN207445643U CN207445643U CN201721262195.2U CN201721262195U CN207445643U CN 207445643 U CN207445643 U CN 207445643U CN 201721262195 U CN201721262195 U CN 201721262195U CN 207445643 U CN207445643 U CN 207445643U
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- ring vacuum
- vacuum pump
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Abstract
The utility model is related to a kind of recovery systems of low boiling point solvent.The utility model is just to provide a kind of recovery system for the low boiling point solvent that solvent rate of recovery is high, simple in structure, at low cost, environment protecting is good.The recovery system of low boiling point solvent, including head tank, condenser I, condenser II, recycling can I, recycling can II, vapour liquid separator, liquid-ring vacuum pump, its structural feature is head tank outlet and condenser I, recycling can I, check-valves, the entrance of liquid-ring vacuum pump is sequentially connected, it is connected using the outlet of solvent as working solution liquid-ring vacuum pump with vapour liquid separator, two leakage fluid drams of vapour liquid separator respectively with recycling can II, the entrance connection of liquid-ring vacuum pump, pressure-equalizing pipe is additionally provided between vapour liquid separator and recycling can II, the gas outlet of vapour liquid separator is connected by condenser II with efficient vapour phase membrane module air inlet；Exhaust pipe and the return duct with there is liquid ring vacuum pump intake to be connected are also set up on efficient vapour phase membrane module.
Description
Technical field
The utility model is related to a kind of recovery systems of low boiling point solvent.
Background technology
Medication chemistry industry particularly production of raw medicine is mainly characterized by its production process with high risk, high pollution
Property, high toxic, almost all of production of raw medicine using substantial amounts of organic solvent, have it is inflammable, explosive, volatile, have
Poison, harmful characteristic；In process of production, part organic solvent is discharged in the form of waste liquid, exhaust gas, is lost in, and is not only caused
The wasting of resources, and serious environmental pollution can be brought.There are the rate of recovery is relatively low, exhaust emissions is dense for existing solvent recovery
The problem of degree height, waste of resource and environmental pollution.
Chinese invention patent, publication number CN101249309A, patent disclose the solvent recovery in a kind of pharmacy industry
And realize the solvent recovering system of the method.The solvent recovering system includes raw material, and the steam outlet of head tank is sequentially connected in series
Have a condenser and vapour liquid separator, the input port of the steam discharge connection liquid rotary pump of vapour liquid separator, the delivery outlet of liquid rotary pump according to
Secondary series connection after-condenser and secondary vapour liquid separator, the liquid outlet connection recycling can of secondary vapour liquid separator, separately
The input port of one liquid outlet connection liquid rotary pump.Since the tail gas after time condensation and vapor-liquid separation is through demister removal liquid
Into recycling can after pearl, finally it is directly discharged in air, which has the shortcomings that tail gas recycle is halfway, most
The tail gas discharged eventually also containing a small amount of solvent, has certain pollution.The system is for the recycling of low boiling point solvent and discomfort
With in addition to condenser recovery section solvent, other uncooled solvents are discharged with tail gas, can cause environmental pollution, also exist back
Yield is low, it is of high cost the problems such as.
It is high, simple in structure, at low cost, environmentally friendly to provide a kind of solvent rate of recovery aiming at the above problem for the utility model
The recovery system of the good low boiling point solvent of effect.
The content of the invention
To solve the above problems, the technical scheme adopted by the utility model is that：The recovery system of low boiling point solvent, including original
Batch can, condenser I, condenser II, recycling can I, recycling can II, vapour liquid separator, liquid-ring vacuum pump, structural feature are original
Batch can is exported to be sequentially connected with the entrance of condenser I, recycling can I, check-valves, liquid-ring vacuum pump, using solvent as working solution liquid
The outlet of ring vacuum pump is connected with vapour liquid separator, two leakage fluid drams of vapour liquid separator respectively with recycling can II, liquid ring vacuum
The entrance connection of pump, is additionally provided with pressure-equalizing pipe, the gas outlet of vapour liquid separator leads between vapour liquid separator and recycling can II
Condenser II is crossed with efficient vapour phase membrane module air inlet to be connected；Exhaust pipe is also set up on efficient vapour phase membrane module and with there is pendular ring true
The return duct that empty pump intake is connected.
As further improvement of the utility model, between the leakage fluid dram of vapour liquid separator and liquid ring vacuum suction port of compressor
Pipeline on be in series with cooler.
As further improvement of the utility model, connect vapour liquid separator leakage fluid dram and the pipeline of recycling can II is arranged to
It is U-shaped；Limit the liquid level in vapour liquid separator.
The advantageous effect of utility model
The utility model is improved on the basis of background patents, has simplified structure, and perfect function, it can be achieved that
The low boiling point organic solvent of medication chemistry industry is repeatedly recycled, the solvent rate of recovery is high, and recovering effect is good；Using efficient vapour phase
Membrane module only discharges air from efficient vapour phase membrane module, realizes qualified discharge, and environment protecting is good；Efficient vapour phase membrane module absorbs
Solvent steam again return to liquid-ring vacuum pump, under the action of liquid-ring vacuum pump, participate in again second vapor-liquid separation and
Thereafter in removal process, yield is further improved, has saved and has changed film cost.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
As shown in the figure, the outlet of head tank 1 of the utility model and condenser I 2, recycling can I 3, check-valves 4, liquid ring vacuum
The entrance of pump 5 is sequentially connected, and the outlet of liquid-ring vacuum pump 5 is connected with vapour liquid separator 6, a leakage fluid dram of vapour liquid separator 6
It is connected with recycling can II 9, pipeline is U-shaped.Another leakage fluid dram of vapour liquid separator 6 is in series with cooler 7 and liquid-ring vacuum pump 5
Entrance is connected, and the cooling liquid inlet of cooler 7 is connected with the cooling liquid outlet of condenser II 8.Cooler 7 can cool down vapour-liquid point
From the working solution i.e. liquid vehicle that device 6 flows to liquid-ring vacuum pump 5, ensure that liquid-ring vacuum pump 5 can be with continuous firing.Vapour liquid separator
6 gas outlet is connected by condenser II 8 with efficient 10 air inlet of vapour phase membrane module, is additionally provided on efficient vapour phase membrane module 10
Return duct 11 and exhaust pipe 12,11 both ends of return duct enter respectively with the membrane component in efficient vapour phase membrane module and liquid-ring vacuum pump 5
Mouth is connected.Pressure-equalizing pipe 13 is additionally provided between vapour liquid separator 6 and recycling can II 9.Liquid-ring vacuum pump 5 is made with liquid vehicle
For working solution, condenser I 2, condenser II 8, cooler 7, recycling can I 3, recycling can II 9 make refrigerant using brine.Recycling
There is condensation chuck outside tank I 3, recycling can II 9, refrigerant is in condensation chuck flowing.Efficient vapour phase membrane module can directly on the market
It purchases.The utility model further includes some attachmentes, and if the circle that " T " is indicated in figure is thermometer, the circle for indicating " P " is pressure
Table, the circle for indicating " LG " are liquid level gauges.
During work, under the swabbing action of liquid-ring vacuum pump 5, negative pressure is formed in head tank 1, causes the liquid in head tank
Solvent boiling point reduce, it is easy to be heated to boiling formed steam solvent steam from head tank 1 come out after by condenser I 2
When, under cooling effect, moist steam is formed in condenser I 2；Moist steam enters recycling can I 3 and carries out first time vapour-liquid point
From the liquid vehicle after separation is stored in recycling can I 3, and non-condensing solvent steam flows through true into pendular ring after check-valves 4
Sky pump 5, the effect of check-valves 4 is to prevent solvent from flowing backwards in system-down.After solvent steam is boosted by liquid-ring vacuum pump 5,
Vapour liquid separator 6 is escaped and enter from the exhaust outlet of liquid-ring vacuum pump 5 with together with the working solution of liquid-ring vacuum pump 5, and in vapour-liquid
Secondary vapor-liquid separation in separator 6；Liquid vehicle after separation is stored in vapour liquid separator, when liquid level is more than U-tube
During top, liquid vehicle flows into the solvent steam warp that recycling can II 9 is to be utilized, and secondary vapor-liquid separation comes out in vapour liquid separator 6
Condenser II 8 is crossed, the liquid vehicle of generation enters in recycling can II 9, and remaining non-condensing solvent steam enters efficient vapour phase film
Component 10, solvent steam are absorbed by efficient vapour phase membrane module 10, and air is finally from 12 row of exhaust pipe of efficient vapour phase membrane module 10
Go out, realize qualified discharge；The solvent steam absorbed simultaneously by efficient vapour phase membrane module 10 in the case where liquid-ring vacuum pump 5 is sucked by vacuum,
Liquid-ring vacuum pump 5 is entered by return duct 11, after the boosting of liquid-ring vacuum pump 5, carries out secondary vapor-liquid separation again with being condensed back to
The processes such as receipts constantly cycle, realize the recycling to the low boiling point solvent in tail gas.
Claims (3)
1. a kind of recovery system of low boiling point solvent, including head tank, condenser I, condenser II, recycling can I, recycling can II,
Vapour liquid separator, liquid-ring vacuum pump, it is characterised in that head tank exports and condenser I, recycling can I, check-valves, liquid-ring vacuum pump
Entrance be sequentially connected, be connected using the outlet of solvent as working solution liquid-ring vacuum pump with vapour liquid separator, vapour liquid separator
Entrance of two leakage fluid drams respectively with recycling can II, liquid-ring vacuum pump is connected, and is also set up between vapour liquid separator and recycling can II
There is pressure-equalizing pipe, the gas outlet of vapour liquid separator is connected by condenser II with efficient vapour phase membrane module air inlet；Efficient gas
Exhaust pipe and the return duct with there is liquid ring vacuum pump intake to be connected are also set up on phase membrane module.
2. the recovery system of low boiling point solvent as described in claim 1, it is characterised in that the leakage fluid dram and liquid of vapour liquid separator
Cooler is in series on pipeline between ring vacuum compressor entrance.
3. the recovery system of low boiling point solvent as described in claim 1, it is characterised in that connection vapour liquid separator leakage fluid dram with
The pipeline of recycling can II is arranged to U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721262195.2U CN207445643U (en) | 2017-09-29 | 2017-09-29 | The recovery system of low boiling point solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721262195.2U CN207445643U (en) | 2017-09-29 | 2017-09-29 | The recovery system of low boiling point solvent |
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| Publication Number | Publication Date |
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| CN207445643U true CN207445643U (en) | 2018-06-05 |
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| CN201721262195.2U Active CN207445643U (en) | 2017-09-29 | 2017-09-29 | The recovery system of low boiling point solvent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107569862A (en) * | 2017-09-29 | 2018-01-12 | 辽宁英沃尔节能环保科技有限公司 | Low boiling solvent recovery and recovery system |
| CN109092005A (en) * | 2018-09-26 | 2018-12-28 | 天津明亮工程技术有限公司 | Low-boiling-point solvent recovery method and recovery system |
-
2017
- 2017-09-29 CN CN201721262195.2U patent/CN207445643U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107569862A (en) * | 2017-09-29 | 2018-01-12 | 辽宁英沃尔节能环保科技有限公司 | Low boiling solvent recovery and recovery system |
| CN109092005A (en) * | 2018-09-26 | 2018-12-28 | 天津明亮工程技术有限公司 | Low-boiling-point solvent recovery method and recovery system |
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