CN102500132A - Organic solvent recovering system and method of vacuum device - Google Patents
Organic solvent recovering system and method of vacuum device Download PDFInfo
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- CN102500132A CN102500132A CN2011103092976A CN201110309297A CN102500132A CN 102500132 A CN102500132 A CN 102500132A CN 2011103092976 A CN2011103092976 A CN 2011103092976A CN 201110309297 A CN201110309297 A CN 201110309297A CN 102500132 A CN102500132 A CN 102500132A
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- 239000003960 organic solvent Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 153
- 238000005273 aeration Methods 0.000 claims abstract description 26
- 239000006096 absorbing agent Substances 0.000 claims abstract description 6
- 239000003463 adsorbent Substances 0.000 claims description 35
- 238000011084 recovery Methods 0.000 claims description 22
- 239000007864 aqueous solution Substances 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000008246 gaseous mixture Substances 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000002224 dissection Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000013589 supplement Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000012224 working solution Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
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Abstract
The invention discloses an organic solvent recovering system and method of a vacuum device, which are applied to the vacuum device which is sealed by water and used for recovering an organic solvent in sealing water. The organic solvent recovering system of the vacuum device comprises a cooling-heat exchange device, a plurality of water containers filled with clean circulating water in advance, an absorber, a condenser and a collecting container. The organic solvent recovering method of the vacuum device mainly comprises the step of aeration treatment, absorption, resolution and collection. The designed system is simple and reasonable in configuration, and solves the problem that the organic solvent in the sealing water is wasted and polluted for a long time. According to the connection mode of the system, at least two recovering methods are advised, so that the organic solvent can be recovered simply, conveniently and effectively.
Description
Technical field
The present invention relates to a kind of Recovery of Organic Solvent system and method, a kind of specifically vacuum plant, especially water of being applied in cooked in the vacuum plant of sealing, the system and method that the organic solvent that the aqueous solution contained in the vacuum plant is reclaimed.
Background technology
Use in the commercial production of organic solvent in medicine, petrochemical industry etc., all can use the vacuum plant with water-stop such as water ring vacuum pump, water-jet vavuum pump in a large number.The vacuum plant water is as working solution, processes such as through the rotation and the action of centrifugal force of impeller, the pump chamber that forms volume-variation is air-breathing to realize, compression and exhaust.Typical water ring vacuum pump is used as self-priming water pump at first, then is used for many industrial departments such as oil, chemical industry, machinery, mine, light industry, medicine and food gradually.In industrial many technical process, as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentrate, vacuum conditioning and vacuum outgas etc., water ring vacuum pump all is widely used.During use, in the pump housing, adorn an amount of water as working solution.When the impeller clockwise direction rotated, around water was thrown to by impeller, because action of centrifugal force, water had formed a closed circle that is similar to equal thickness that is decided by the pump chamber shape.The lower part inner surface of water ring is lucky and impeller hub is tangent, and the upper inside surface of water ring just contacts with blade tip.Form a crescent-shaped space between impeller hub and the water ring this moment, and this space is divided into several loculuses that equate with lobe numbers by impeller.If the bottom with impeller is a starting point for 0 °, the volume of impeller loculus when preceding 180 ° of rotation changes from small to big so, and communicates with air entry on the end face, and this moment, gas was inhaled into, when air-breathing loculus at the end then isolated with air entry; When impeller continued rotation, loculus was compressed gas from large to small; When loculus communicated with exhaust outlet, gas just was discharged from outside the pump.Water ring vacuum pump is exactly to lean on the variation of pump chamber to realize air-breathing, compression and exhaust.
Water has also caused certain problem when being a kind of relatively inexpensive working solution medium.For example, most of organic solvent possibly be dissolved in the water or forced emulsification and getting in the water.The aqueous solution that contains organic solvent will influence the vacuum in the pump housing, bring hidden danger to safety in production.In the actual production,, need clean relatively sealing water be provided to the pump housing in order to satisfy vacuum and safe requirement.General way is that the side at vacuum plant is provided with a water receptacle that changes water to the pump housing.This water receptacle is provided with water inlet, delivery port, water supplement port, and the water receptacle set inside has liquid level sensor and temperature sensor.This delivery port is set to threeway, and a side is connected with the water inlet of vacuum plant, and a side is connected with waste liquid pool.Consider that sealing water conservancy project in vacuum plant made a period of time temperature and all can the heat exchanger that the used recirculated water that vacuum plant is discharged cools off generally all also be set in the front of water receptacle (being between vacuum plant aqueous solution water side and the water receptacle water inlet) than higher.Water receptacle can preset clean sealing water through water supplement port, and when vacuum plant need change water, pure sealing water added in the vacuum plant from the delivery port of water receptacle.Meanwhile; The aqueous solution that contains organic solvent of discharging from vacuum plant gets into the water receptacle from the water inlet of water receptacle, if the aqueous solution that discharge from vacuum plant this moment can also satisfy the production demand after through the heat exchanger cooling; Then carry out suitable moisturizing from water supplement port as required; When the vacuum device need change water once more, the water of this partially aqueous solution and the new cleaning that replenishes was from the water inlet end of delivery port inflow vacuum plant, so repeatedly; When after after a while; When the aqueous solution of discharging from vacuum plant can not be used further to produce, these aqueous solution are discharged to waste liquid pool from delivery port, the sealing water that then replenishes new cleaning in the water receptacle is used for the whole circulation process.But in fact, all being the organic solvent that contains production usefulness from the aqueous solution that the water receptacle delivery port is discharged, if throw away, causing the loss of a large amount of organic solvents, is a kind of waste behavior, also might serious environment pollution.
Summary of the invention
The technical issues that need to address of the present invention provide system and method a kind of vacuum plant to water-stop, that the organic solvent in the aqueous solution of vacuum plant is reclaimed.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is:
The organic solvent recovery system of vacuum plant; Comprise the cooling heat transferring device that is connected with the water side of vacuum plant; Be connected with some water receptacles that recirculated water is housed that drive water pump that have between the outlet of said cooling heat transferring device and the water inlet end of vacuum plant; Water receptacle is connected to the adsorbent equipment of being with the steam generator through pipeline, and adsorbent equipment is connected with condenser, collection container or rectifying device in order.
Further improvement of the present invention is: said pipeline comprises first pipeline that is connected to adsorbent equipment that is arranged on the water receptacle lower end.
Further improvement of the present invention is: said pipeline also comprises second pipeline that is connected to adsorbent equipment that is arranged on the water receptacle upper end; Air heater that the water receptacle arranged outside is connected with water receptacle and Aeration fan, the water receptacle bottom is provided with the aeration plate that is connected with Aeration fan.
Further improvement of the present invention is: said adsorbent equipment be set to some be arranged side by side in establish the absorber of granular active carbon or NACF.
The organic solvent recovery method of vacuum plant; Adopt the organic solvent recovery system of above-mentioned vacuum plant; During the work of said vacuum plant, vacuum plant is connected with first water receptacle and forms circulation, when vacuum device work after 0.5～1 hour; Organic solvent content in this first water receptacle is near the vacuum equipment permissible value; Vacuum plant is switched second water receptacle that is connected to the recirculated water that cleaning is housed circulates, and the organic solvent that contains in first water receptacle is recycled, specifically may further comprise the steps:
A. open first pipeline, first water receptacle is connected through first pipeline and adsorbent equipment, the aqueous solution that contains organic solvent in the water receptacle gets into adsorbent equipment, and the organic solvent that contains in the aqueous solution is carried out adsorption treatment;
B. after adsorption treatment is accomplished, close first pipeline, in adsorbent equipment, feed steam, adsorbent equipment is carried out dissection process, obtain containing the gaseous mixture of organic solvent by the steam generator;
C. make mixed airflow obtain to contain the mixed liquor of organic solvent through condenser;
D. utilize collection container that mixed liquor is carried out layering and handle, obtain organic solvent;
E. the vacuum plant switching is connected to the 3rd water receptacle, the organic solvent that contains in second water receptacle is recycled, recycle the work that water receptacle is used for vacuum plant, and organic solvent in the water receptacle is recycled.
The further improvement of the organic solvent recovery method of vacuum plant is: said steps d replaces with: mixed liquor is fed rectifying device carry out rectification process, obtain organic solvent.
The further improvement of the organic solvent recovery method of vacuum plant is: said step a replaces with: with air heater air heat is obtained hot-air, hot-air gets into first water receptacle from aeration plate under the driving of Aeration fan, carries out aeration and handles; Open second pipeline, first water receptacle is connected through second pipeline and adsorbent equipment, aeration is handled the hot-air that contains organic solvent that obtains and is got into adsorbent equipment by second pipeline, carries out adsorption treatment.
Further improvement of the present invention is: the chilling temperature of said cooling heat transferring device is 34 ℃～36 ℃, and said air heater is with air heat to 70～90 ℃.
Further improvement of the present invention is: steam is that pressure is the saturated steam of 0.2～0.4MPa among the said step b.
Because the technological progress of having adopted technique scheme, the present invention to obtain is:
The present invention is directed to vacuum plant and be provided with a kind of system and method that reclaims the organic solvent in the sealing water; Institute's designed system is simple, connection and reasonable arrangement; The waste and the pollution problem that seal organic solvent in the water have for a long time been solved; Also, advised at least two cover recovery methods, simply, conveniently, effectively reclaimed organic solvent according to the connected mode of system.The recirculated water that is used for the sealed vacuum device that in a plurality of water receptacles, presets, make recirculated water in vacuum plant and water receptacle fully the circulation, effective and reasonable utilization water resource.And the water receptacle of a plurality of parallel connections is set, and can realize continuous production, satisfy the requirement of automation.Utilize hot-air to carry out aeration and handle, effectively aeration separates organic solvent, obtains the higher hot-air that contains organic solvent of relative amount.But the working media preferred particulates shaped activated carbon or the activated fibre of adsorbent equipment more help organic solvent is adsorbed.Simultaneously, the absorber of active carbon also is set to a plurality of structures that can use in turn of parallel connection, the same with water receptacle, can satisfy the demand that operate as normal reclaims, and effective guarantee is provided for safety in production.Utilize saturated vapor that adsorbent equipment is resolved and obtain gaseous mixture, this moment, the content of organic solvent increased relatively, only needed gaseous mixture is carried out condensation process, can collect organic solvent through layering or distillating method.Wherein, the choose reasonable of the chilling temperature of said cooling heat transferring device, the temperature of air heater, the temperature of resolving gas, the condensation temperature of condenser etc. has further improved recovering effect.That the present invention has is reasonable in design, simple to operate, reduce the waste of resource, the advantage of clean environmental protection.
Description of drawings
Fig. 1 is a flow chart of the present invention.
The specific embodiment
Below in conjunction with embodiment the present invention is explained further details:
Embodiment 1
The organic solvent recovery system of vacuum plant comprises cooling heat transferring device, some water receptacles, adsorbent equipment, collection container.Said cooling heat transferring device is connected the water side of vacuum plant, and the other end of cooling heat transferring device is connected with some water receptacles respectively.The upper end of said water receptacle is provided with water inlet, water supplement port, and the lower end of water receptacle sets out the mouth of a river, and the water receptacle set inside has liquid level sensor, temperature sensor, and the bottom of water receptacle is provided with aeration plate.The lower outside of water receptacle connects air heater and Aeration fan, and Aeration fan is connected with aeration plate.All prepackage has clean recirculated water in each water receptacle.Water receptacle is connected with the water pump that drives the water circulation.The delivery port of water receptacle is set to three-port structure, and a side is communicated to the water inlet end of vacuum plant, and opposite side passes through the communication direction of switch control delivery port through the inlet of first pipeline connection adsorbent equipment during use.The upper end of water receptacle is provided with second pipeline and is connected to adsorbent equipment.Be used for feeding water receptacle liquid in first pipeline.Second pipeline is used for through the gas after the aeration processing.The outlet of adsorbent equipment is connected with the inlet of condenser, and the outlet of condenser is connected to collection container.The absorber that adsorbent equipment is set to be arranged side by side is established granular active carbon or NACF in each absorber.
In the vacuum plant work, when the sealing water in the vacuum device need be changed, open the communication passage of the cooling heat-exchanger rig and first water receptacle, recirculated water is added in the vacuum plant from the delivery port of first water receptacle.Meanwhile, the aqueous solution that contains organic solvent of discharging from vacuum plant cools off through the cooling heat transferring device, and chilling temperature is 34 ℃～36 ℃.The cold aqueous solution after going to handle gets into first water receptacle from water inlet, according to circumstances can carry out moisturizing to recirculated water through water supplement port.When the sealing water in the vacuum device need be changed once more, repeat the recirculated water in the water receptacle is added to vacuum plant, and collect the aqueous solution in the vacuum plant through the cooling heat transferring device once more.So repeatedly; Recirculated water circulates between first water receptacle and vacuum plant; When vacuum device work after 0.5～1 hour; Organic solvent content in first water receptacle switches second water receptacle that is connected to the recirculated water that cleaning is housed with vacuum plant and circulates, and the organic solvent that contains in first water receptacle is recycled near the permissible value of vacuum equipment.
The Recovery of Organic Solvent method of vacuum plant specifically may further comprise the steps:
A. open first pipeline, first water receptacle is connected through first pipeline and adsorbent equipment, the aqueous solution that contains organic solvent in the water receptacle gets into adsorbent equipment, and the organic solvent that contains in the aqueous solution is carried out adsorption treatment;
B. after adsorption treatment is accomplished, close first pipeline, in adsorbent equipment, feed saturated steam by the steam generator, adsorbent equipment is carried out dissection process, obtain containing the gaseous mixture of organic solvent, the pressure of said saturated steam is 0.2～0.4MPa;
C. make mixed airflow obtain to contain the mixed liquor of organic solvent through condenser;
D. utilize collection container that mixed liquor is carried out layering and handle, obtain organic solvent;
E. the vacuum plant switching is connected to the 3rd water receptacle, the organic solvent that contains in second water receptacle is recycled, recycle the work that water receptacle is used for vacuum plant, and organic solvent in the water receptacle is recycled.
Embodiment 2
Among the said embodiment 1 in the Recovery of Organic Solvent method of vacuum plant step a replace with: with air heater air heat is obtained hot-air, the temperature of hot-air is 70～90 ℃.Hot-air gets into first water receptacle from aeration plate under the driving of Aeration fan, carry out aeration and handle; Open second pipeline, first water receptacle is connected through second pipeline and adsorbent equipment, aeration is handled the hot-air that contains organic solvent that obtains and is got into adsorbent equipment by second pipeline, carries out adsorption treatment.
Embodiment 3
Said collection container replaces with rectifying device, and the outlet of condenser is communicated to rectifying device.Steps d described in the Recovery of Organic Solvent method of vacuum plant replaces with among the said embodiment 1: mixed liquor is fed rectifying device carry out rectification process, obtain organic solvent.
Claims (9)
1. the organic solvent recovery system of vacuum plant; Comprise the cooling heat transferring device that is connected with the water side of vacuum plant; It is characterized in that: be connected with some water receptacles that recirculated water is housed that drive water pump that have between the outlet of said cooling heat transferring device and the water inlet end of vacuum plant; Water receptacle is connected to the adsorbent equipment of being with the steam generator through pipeline, and adsorbent equipment is connected with condenser, collection container or rectifying device in order.
2. the organic solvent recovery system of vacuum plant according to claim 1, it is characterized in that: said pipeline comprises first pipeline that is connected to adsorbent equipment that is arranged on the water receptacle lower end.
3. the organic solvent recovery system of vacuum plant according to claim 2; It is characterized in that: said pipeline also comprises second pipeline that is connected to adsorbent equipment that is arranged on the water receptacle upper end; Air heater that the water receptacle arranged outside is connected with water receptacle and Aeration fan, the water receptacle bottom is provided with the aeration plate that is connected with Aeration fan.
4. according to the organic solvent recovery system of each described vacuum plant of claim 1～3, it is characterized in that: said adsorbent equipment be set to some be arranged side by side in establish the absorber of granular active carbon or NACF.
5. the organic solvent recovery method of vacuum plant; It is characterized in that: the organic solvent recovery system that adopts each described vacuum plant of claim 1～4; When said vacuum plant is worked; Vacuum plant is connected with first water receptacle and forms circulation, when the organic solvent content in first water receptacle during near the vacuum equipment permissible value, vacuum plant switched is connected to second water receptacle that clean recirculated water is housed and circulates; And the organic solvent that contains in first water receptacle recycled, specifically may further comprise the steps:
A. open first pipeline, first water receptacle is connected through first pipeline and adsorbent equipment, the aqueous solution that contains organic solvent in the water receptacle gets into adsorbent equipment, and the organic solvent that contains in the aqueous solution is carried out adsorption treatment;
B. after adsorption treatment is accomplished, close first pipeline, in adsorbent equipment, feed steam, adsorbent equipment is carried out dissection process, obtain containing the gaseous mixture of organic solvent by the steam generator;
C. make mixed airflow obtain to contain the mixed liquor of organic solvent through condenser;
D. utilize collection container that mixed liquor is carried out layering and handle, obtain organic solvent;
E. the vacuum plant switching is connected to the 3rd water receptacle, the organic solvent that contains in second water receptacle is recycled, recycle the work that water receptacle is used for vacuum plant, and organic solvent in the water receptacle is recycled.
6. the organic solvent recovery method of vacuum plant according to claim 5, it is characterized in that: said steps d replaces with: mixed liquor is fed rectifying device carry out rectification process, obtain organic solvent.
7. according to the organic solvent recovery method of claim 5 or 6 described vacuum plants; It is characterized in that: said step a replaces with: with air heater air heat is obtained hot-air; Hot-air gets into first water receptacle from aeration plate under the driving of Aeration fan, carry out aeration and handle; Open second pipeline, first water receptacle is connected through second pipeline and adsorbent equipment, aeration is handled the hot-air that contains organic solvent that obtains and is got into adsorbent equipment by second pipeline, carries out adsorption treatment.
8. the organic solvent recovery method of vacuum plant according to claim 7, it is characterized in that: the chilling temperature of said cooling heat transferring device is 34 ℃～36 ℃, said air heater is with air heat to 70～90 ℃.
9. the organic solvent recovery method of vacuum plant according to claim 7, it is characterized in that: steam is that pressure is the saturated steam of 0.2～0.4MPa among the said step b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110309297.6A CN102500132B (en) | 2011-10-13 | 2011-10-13 | Organic solvent recovering system and method of vacuum device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110309297.6A CN102500132B (en) | 2011-10-13 | 2011-10-13 | Organic solvent recovering system and method of vacuum device |
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| CN102500132A true CN102500132A (en) | 2012-06-20 |
| CN102500132B CN102500132B (en) | 2014-05-07 |
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| CN201110309297.6A Expired - Fee Related CN102500132B (en) | 2011-10-13 | 2011-10-13 | Organic solvent recovering system and method of vacuum device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824003A (en) * | 2017-10-20 | 2018-03-23 | 新中天环保股份有限公司 | Organic solvent recovery process |
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| CN101804288A (en) * | 2010-04-27 | 2010-08-18 | 江苏九九久科技股份有限公司 | Process for treating tail gas containing insoluble solvent |
| CN201603414U (en) * | 2009-11-27 | 2010-10-13 | 晨光生物科技集团股份有限公司 | Device using vacuum pump for recycling water and recovering solvents |
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2011
- 2011-10-13 CN CN201110309297.6A patent/CN102500132B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7041214B2 (en) * | 2002-07-23 | 2006-05-09 | Samsung Electronics Co., Ltd. | Waste water treatment system |
| CN1608710A (en) * | 2003-10-20 | 2005-04-27 | 中国石油化工股份有限公司 | Active carbon fiber device and method for adsorbing, recovering and treating organic waste gas |
| CN101024139A (en) * | 2006-12-31 | 2007-08-29 | 武汉旭日华科技发展有限公司 | Method and apparatus for absorbing and recovering volatile gas by active charcoal fiber |
| CN201603414U (en) * | 2009-11-27 | 2010-10-13 | 晨光生物科技集团股份有限公司 | Device using vacuum pump for recycling water and recovering solvents |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107824003A (en) * | 2017-10-20 | 2018-03-23 | 新中天环保股份有限公司 | Organic solvent recovery process |
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