CN107469378A - Medication chemistry industry organic solvent recovery method and recovery system - Google Patents
Medication chemistry industry organic solvent recovery method and recovery system Download PDFInfo
- Publication number
- CN107469378A CN107469378A CN201710902238.7A CN201710902238A CN107469378A CN 107469378 A CN107469378 A CN 107469378A CN 201710902238 A CN201710902238 A CN 201710902238A CN 107469378 A CN107469378 A CN 107469378A
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- liquid
- recycling
- solvent
- ring vacuum
- condenser
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- 238000011084 recovery Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000003960 organic solvent Substances 0.000 title claims abstract description 16
- 239000003814 drug Substances 0.000 title claims abstract description 15
- 229940079593 drug Drugs 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 131
- 239000002904 solvent Substances 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000004064 recycling Methods 0.000 claims abstract description 40
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000012224 working solution Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 20
- 238000000926 separation method Methods 0.000 claims description 15
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0036—Multiple-effect condensation; Fractional condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to a kind of medication chemistry industry organic solvent recovery method and recovery system.The present invention provides the good medication chemistry industry organic solvent recovery method of a kind of high solvent rate of recovery, emission-free pollution, energy-saving and environmental protection effect and recovery system.A kind of recovery system that can realize medication chemistry industry organic solvent recovery method.A kind of recovery system that can realize medication chemistry industry organic solvent recovery method, including head tank, condenser I, condenser II, recycling can I, recycling can II, vapour liquid separator, liquid ring vacuum compressor using solvent as working solution, head tank exports and condenser I, recycling can I, the entrance of liquid ring vacuum compressor is sequentially connected, the outlet of liquid ring vacuum compressor is connected with vapour liquid separator, two leakage fluid drams of vapour liquid separator respectively with liquid ring vacuum suction port of compressor, recycling can is connected, its structural feature is that the gas outlet of vapour liquid separator is connected by condenser II with the solvent steam inlet of water seal wash mill.
Description
Technical field
The present invention relates to a kind of medication chemistry industry organic solvent recovery method and recovery system.
Background technology
Its production process that is mainly characterized by of medication chemistry industry particularly production of raw medicine has high risk, high pollution
Property, high toxic, almost all of production of raw medicine uses 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, waste gas, is lost in, and is not only caused
The wasting of resources, and bring serious problem of environmental pollution.The existing organic solvent recovery method rate of recovery is relatively low, exhaust emissions
Concentration is high, while waste of resource, can more cause 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.This method includes heating liquid vehicle in head tank, makes solvent boiling shape
Into steam, steam is cooled into moist steam after head tank extraction with condenser, then with vapour liquid separator by moist steam
Drop separates with steam, then the solvent steam separated with liquid rotary pump extraction vapour liquid separator, solvent steam is passed through pendular ring
After pump boosting, then with condenser and vapour liquid separator time condensation and vapor-liquid separation are carried out to the solvent steam after boosting, separation
Tail gas afterwards enters recycling can after demister removes liquid pearl, is finally directly discharged in air.This method has tail gas recycle
Halfway shortcoming, the tail gas finally discharged also contain a small amount of solvent, have certain contaminative, and therefore, this method is present
Not the problem of rate of recovery is not very high, and energy-saving and environmental protection effect is limited.
The content of the invention
The present invention is aiming above mentioned problem, there is provided a kind of solvent rate of recovery is high, emission-free pollution, energy-saving and environmental protection effect
Good medication chemistry industry organic solvent recovery method and recovery system.
To solve the above problems, the present invention adopts the technical scheme that：Medication chemistry industry organic solvent recovery method, including
Following steps：Liquid vehicle in head tank is heated boiling under the negative pressure state that liquid ring vacuum compressor is formed and forms solvent
Steam, condensed device I form moist steam, and a vapor-liquid separation is carried out into recycling can I, and liquid vehicle is stored in recycling can I,
Solvent steam enters liquid ring vacuum compressor through check-valves, and vapour liquid separator is entered after boosting, secondary vapor-liquid separation is carried out, works as vapour
When liquid level is exceeded at the top of U-tube in liquid/gas separator, liquid vehicle enters recycling can II, when the air pressure in vapour liquid separator exceedes water
When sealing the back pressure of wash mill, solvent steam passes through condenser II, and caused liquid vehicle enters recycling can II, remaining solvent
Steam enters water seal wash mill, and solvent is dissolved and absorbed by water sealing liquid.
Further, present invention additionally comprises water sealing liquid solvent recycling step：In the negative pressure shape that liquid ring vacuum compressor is formed
Under state, the solvent in water sealing liquid, which volatilizees, to be formed solvent steam and enters liquid ring vacuum compressor through return line, then boosted,
Secondary vapor-liquid separation and its each step afterwards.The recovery of water sealing liquid solvent is that the water sealing liquid worked as in water seal wash mill is inhaled for a long time
Receive the tail gas of secondary vapor-liquid separation, because of the solvent recycling step that solvent concentration is high and starts, make in water sealing liquid solvent again by
Recycle, the water sealing liquid after processing can be continuing with.Reclaimed by water sealing liquid solvent, improve the solvent rate of recovery, prevent
Discharge, realize the purpose of energy-saving and environmental protection.
Another technical scheme provided by the invention is：It is a kind of to realize returning for medication chemistry industry organic solvent recovery method
Receipts system.The recovery system, including head tank, condenser I, condenser II, recycling can I, recycling can II, vapour liquid separator,
Liquid ring vacuum compressor using solvent as working solution, head tank outlet and condenser I, recycling can I, liquid ring vacuum compressor
Entrance is sequentially connected, and the outlet of liquid ring vacuum compressor is connected with vapour liquid separator, two leakage fluid drams difference of vapour liquid separator
It is connected with liquid ring vacuum suction port of compressor, recycling can, its structural feature is that the gas outlet of vapour liquid separator passes through condenser II
It is connected with the solvent steam inlet of water seal wash mill.
As a further improvement on the present invention, present invention additionally comprises return line, return line both ends to wash with water seal respectively
Device blast pipe is washed with liquid ring vacuum suction port of compressor to be connected.
As a further improvement on the present invention, set on the pipeline between the entrance of recycling can I and liquid ring vacuum compressor
There is check-valves.
As a further improvement on the present invention, water seal wash mill includes housing, is arranged on the exhaust of housing upper and lower ends
Pipe, air inlet pipe and the flow damper for being arranged on enclosure interior.
As a further improvement on the present invention, the pipe between the leakage fluid dram of vapour liquid separator and liquid ring vacuum suction port of compressor
Cooler is in series with road, the cooling liquid inlet of cooler is connected with the cooling liquid outlet of condenser II.
The beneficial effect of invention
The present invention adds water seal wash mill and the organic solvent in tail gas is returned again on the basis of background patents
Receive, make water seal wash mill finally discharge gas solvent content it is small, completion realize qualified discharge；Returned by multiple solvent
Receive, the present invention has the advantages of rate of recovery is high, and recovering effect is good.When water sealing liquid contain solvent concentration it is high when, water can also be passed through
The step for sealing liquid solvent reclaims, isolates the solvent in water sealing liquid, recycles, recovering effect is further improved, due to whole
Individual removal process, anhydrous discharge, while using water wisely, avoid environmental pollution.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
As illustrated, recovery system includes head tank 1, condenser I 2, recycling can I 3, check-valves 4, liquid ring vacuum compression
Machine 5, condenser II 8, vapour liquid separator 6, recycling can II 9, water seal wash mill 10, the outlet of head tank 1 and condenser I 2, recovery
Tank I 3, check-valves 4, the entrance of liquid ring vacuum compressor 5 are sequentially connected, the outlet of liquid ring vacuum compressor 5 and vapour liquid separator
6 are connected, and a leakage fluid dram of vapour liquid separator 6 is connected by U-tube with recycling can II 9, and its another leakage fluid dram and pendular ring are true
The empty entrance of compressor 5 is connected, and the gas outlet of vapour liquid separator 6 passes through condenser II 8 and the solvent steam of water seal wash mill 10
Air inlet is connected.Cooler 7 is in series with the pipeline that the leakage fluid dram of vapour liquid separator 6 is connected with liquid ring vacuum compressor 5, this is cold
But the cooling liquid inlet of device 7 is connected with the cooling liquid outlet of condenser II 8, simple in construction, energy-conservation, water saving.Cooler 7 can be with cold
But vapour liquid separator 6 flows to the working solution i.e. liquid vehicle of liquid ring vacuum compressor 5, ensures that liquid ring vacuum compressor 5 can be held
Continuous work.Pressure balance pipeline 16 is also associated between vapour liquid separator 6 and recycling can II 9.Water seal wash mill 10 includes shell
Body 12, the blast pipe 11 and air inlet pipe 15 for being arranged on the upper and lower ends of housing 12, it is arranged on the flow damper 14 of enclosure interior.It is described slow
It is the dough made of finer wire to flow device 14, is filled in the bottom of housing 12, because its liquid vehicle to process produces resistance,
The liquid vehicle for flowing through flow damper 14 forms unhurried current.Liquid level gauge and liquid supplementation pipe 13 are additionally provided with the middle part of housing 12.The present invention
Also include return line 20, the both ends of return line 20 enter with water seal wash mill blast pipe 11 and liquid ring vacuum compressor 5 respectively
Mouth is connected.Liquid ring vacuum compressor 5 is using liquid vehicle as working solution, condenser I 2, condenser II 8, cooler 7, recycling can I
3rd, recycling can II 9 makees coolant using salt solution.There is condensation chuck outside recycling can I 3, recycling can II 9, coolant is condensing
Flowed in chuck.Present invention additionally comprises some annexes, and the circle as indicated " T " in figure is thermometer, and the circle for indicating " P " is pressure
Power table, the circle for indicating " LG " are liquid level gauges.
The specific steps of the inventive method：Under the swabbing action of liquid ring vacuum compressor 5, negative pressure is formed in head tank 1,
The liquid vehicle boiling point in head tank is caused to reduce, it is easy to be heated to boiling and form steam solvent steam to go out from head tank 1
When after coming by condenser I 2, under cooling effect, moist steam is formed in condenser I 2；Moist steam enters recycling can I 3
A vapor-liquid separation is carried out, the liquid vehicle after separation is stored in recycling can I 3 and waits to recycle, non-condensing solvent steam stream
Enter liquid ring vacuum compressor 5 after check-valves 4, the effect of check-valves 4 is to prevent solvent from flowing backwards in system-down.Solvent steams
After vapour is boosted by liquid ring vacuum compressor 5, enter vapour liquid separator 6 together with the working solution of liquid ring vacuum compressor 5, and
In vapour liquid separator 6 secondary vapor-liquid separation is carried out under the barotropic state that liquid ring vacuum compressor 5 is formed；Liquid after separation is molten
Matchmaker is to be utilized into recycling can II 9 when its liquid level exceeds the top of U-tube, and non-condensing solvent steam is from recycling can II 9
Exhaust outlet escapes and enter condenser II 8, is reclaimed by the condensation again of condenser II 8, caused liquid vehicle enters recovery
Recycled in tank II 9, be mainly non-condensable gas by remaining non-condensing solvent steam after condenser II 8, wherein carrying secretly
Micro solvent, the pressure in vapour liquid separator 6 exceedes under the backpressure condition of water seal wash mill 10, and solvent steam enters water
Wash mill 10 is sealed, solvent is dissolved and absorbed by the water sealing liquid in water seal wash mill 10, and tail gas is finally from water seal wash mill 10
Blast pipe 11 discharge, realize qualified discharge.It is dense after the solvent in water sealing liquid Long-term absorption tail gas in water seal wash mill 10
Degree can rise, and carry out recycling to the solvent in water sealing liquid, the valve I 21 that closes between recycling can I 3 and check-valves 4 and
Valve II 23 on the blast pipe of water seal wash mill, the valve III 22 on return line is opened, in liquid ring vacuum compressor 5
Under swabbing action, negative pressure is formed in water seal arrangement 10, the solvent dissolved in water sealing liquid volatilizees to form solvent steam, through liquid ring vacuum
Compressor 5 enters vapour liquid separator 6, carries out vapor-liquid separation, and the liquid vehicle after separation enters recycling can II 9, remaining solvent
The condensed device II 8 of steam enters water seal wash mill 10, constantly repeats above-mentioned cyclic process, and the solvent completed in water sealing liquid returns
Receive.
Claims (7)
1. a kind of medication chemistry industry organic solvent recovery method, comprises the following steps：Liquid vehicle in head tank is true in pendular ring
Boiling is heated under the negative pressure state that empty compressor is formed and forms solvent steam, condensed device I forms moist steam, into recycling can
I carries out a vapor-liquid separation, and liquid vehicle is stored in recycling can I, and solvent steam enters liquid ring vacuum compressor through check-valves,
Enter vapour liquid separator after boosting, carry out secondary vapor-liquid separation, when liquid level exceedes at the top of U-tube in vapour liquid separator, liquid
Solvent enters recycling can II, it is characterised in that when the air pressure in vapour liquid separator exceedes the back pressure of water seal wash mill, solvent
Steam passes through condenser II, and caused liquid vehicle enters recycling can II, and remaining solvent steam enters water seal wash mill, molten
Matchmaker is dissolved and absorbed by water sealing liquid.
2. the medication chemistry industry organic solvent recovery method as described in requiring 1, it is characterised in that also reclaimed including water sealing liquid solvent
Step：Under the negative pressure state that liquid ring vacuum compressor is formed, the solvent in water sealing liquid volatilizees to form solvent steam through return duct
Road enters liquid ring vacuum compressor, is then boosted, secondary vapor-liquid separation and its each step afterwards.
3. a kind of recovery system of claim 1 is realized, including head tank, condenser I, condenser II, recycling can I, recycling can
IIth, vapour liquid separator, the liquid ring vacuum compressor using solvent as working solution, head tank outlet and condenser I, recycling can I, liquid
The entrance of ring vacuum compressor is sequentially connected, and the outlet of liquid ring vacuum compressor is connected with vapour liquid separator, vapour liquid separator
Two leakage fluid drams are connected with liquid ring vacuum suction port of compressor, recycling can respectively, it is characterised in that the gas outlet of vapour liquid separator leads to
Condenser II is crossed with the solvent steam inlet of water seal wash mill to be connected.
4. the recovery system as described in requiring 3, it is characterised in that it is characterized in that present invention additionally comprises return line, return line
Both ends are connected with water seal wash mill blast pipe and liquid ring vacuum suction port of compressor respectively.
5. the recovery system as described in requiring 3, it is characterised in that the pipeline between the entrance of recycling can I and liquid ring vacuum compressor
On be provided with check-valves.
6. the recovery system as described in requiring 3, it is characterised in that water seal wash mill includes housing, is arranged on housing upper and lower ends
Blast pipe, air inlet pipe and the flow damper for being arranged on enclosure interior.
7. the recovery system as described in requiring 3, it is characterised in that the leakage fluid dram of vapour liquid separator and liquid ring vacuum suction port of compressor
Between pipeline on be in series with cooler, the cooling liquid inlet of cooler is connected with the cooling liquid outlet of condenser II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710902238.7A CN107469378A (en) | 2017-09-29 | 2017-09-29 | Medication chemistry industry organic solvent recovery method and recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710902238.7A CN107469378A (en) | 2017-09-29 | 2017-09-29 | Medication chemistry industry organic solvent recovery method and recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107469378A true CN107469378A (en) | 2017-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710902238.7A Pending CN107469378A (en) | 2017-09-29 | 2017-09-29 | Medication chemistry industry organic solvent recovery method and recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107469378A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453582A (en) * | 2018-11-27 | 2019-03-12 | 瓦房店冶金轴承集团有限公司 | Grind processing powder cloudization recycling circulation draining dust removal machine |
| CN110926107A (en) * | 2019-10-18 | 2020-03-27 | 中石化上海工程有限公司 | Nitrogen closed recovery system and method in bulk drug production |
| CN114540117A (en) * | 2022-02-28 | 2022-05-27 | 湖北新铭生物能源科技有限公司 | Crude methyl ester soap removing equipment and method for recycling soap removing agent |
-
2017
- 2017-09-29 CN CN201710902238.7A patent/CN107469378A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453582A (en) * | 2018-11-27 | 2019-03-12 | 瓦房店冶金轴承集团有限公司 | Grind processing powder cloudization recycling circulation draining dust removal machine |
| CN110926107A (en) * | 2019-10-18 | 2020-03-27 | 中石化上海工程有限公司 | Nitrogen closed recovery system and method in bulk drug production |
| CN110926107B (en) * | 2019-10-18 | 2021-08-10 | 中石化上海工程有限公司 | Nitrogen closed recovery system and method in bulk drug production |
| CN114540117A (en) * | 2022-02-28 | 2022-05-27 | 湖北新铭生物能源科技有限公司 | Crude methyl ester soap removing equipment and method for recycling soap removing agent |
| CN114540117B (en) * | 2022-02-28 | 2023-08-18 | 湖北新铭生物能源科技有限公司 | Crude methyl ester soap removal equipment and method for recycling soap removal agent |
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Application publication date: 20171215 |