CN202201853U - Recovery device for polymer polyether polyol reaction solvent - Google Patents
Recovery device for polymer polyether polyol reaction solvent Download PDFInfo
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- CN202201853U CN202201853U CN2011203316506U CN201120331650U CN202201853U CN 202201853 U CN202201853 U CN 202201853U CN 2011203316506 U CN2011203316506 U CN 2011203316506U CN 201120331650 U CN201120331650 U CN 201120331650U CN 202201853 U CN202201853 U CN 202201853U
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- vacuum pump
- solvent
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- polyether polyol
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Abstract
The utility model discloses a recovery device for polymer polyether polyol reaction solvent, which comprises two reactors which are respectively connected with vacuum systems, wherein a first reactor is connected with a first vacuum pump, a first condenser is arranged in front of the first vacuum pump, and the first condenser is connected with a solvent recovery storage tank; a second reactor is connected with a second vacuum pump, a second condenser is arranged in front of the second vacuum pump, and the second condenser is connected with a monomer recovery storage tank; and the first reactor is respectively connected with the solvent recovery storage tank and the second reactor through pipelines, and material shifting pumps are respectively arranged on the pipelines. In the recovery device for the polymer polyether polyol reaction solvent, solvent recovery and subsequent odor removal are taken as two independent processes for performing, so as to avoid the pollution between solvent and waste water generated by removal of peculiar smell, and not only improve the purity of the recovered solvent, but also reduce the discharge amount of the waste water; simultaneously, the production efficiency of polymer polyether polyol products is improved, and the quality is improved.
Description
Technical field
The utility model relates to a kind of chemical plant, is specifically related to a kind of device that reclaims reaction solvent in polyether polyol (hereinafter to be referred as the POP) reaction system that is applicable to.
Background technology
Polyether polyol (POP) be vinyl monomer in the presence of dispersion agent in polyether glycol diffuse-aggregate product; Be improving the breed of polyether glycol; Can increase substantially intensity, the toughness of polyether glycol goods, thereby increase substantially the human body comfort of goods.But in the POP production process, need to add solvent, be convenient to control the temperature of reaction system simultaneously to reduce viscosity.After reaction is accomplished, need to remove this solvent that is added.Because of can not thoroughly there be a small amount of polymerization single polymerization monomer in polyreaction, make POP that peculiar smell beastly arranged.
Be to remove reaction solvent, extract the POP product, general way is in same reactor drum, to remove earlier to desolvate, the peculiar smell of removing the POP product of heating up again (small molecules and be monomer polymerized).The water that can cause like this producing in recovered solvent and the removal peculiar smell process pollutes mutually.Deterioration in quality, life cycle of the product is long.
Summary of the invention
The purpose of the utility model is to provide a kind of retrieving arrangement of polyether polyol reaction solvent; With solvent recuperation with remove peculiar smell and carry out respectively, reach the raising reaction efficiency, improve the solvent recuperation quality; Reduce the content of solvent in the waste water, and the technique effect that reduces pollution to external world; Simultaneously can improve product P OP quality.
The utility model is realized through following technical scheme:
A kind of retrieving arrangement of polyether polyol reaction solvent; It is characterized in that: described retrieving arrangement comprises two reactor drums (R1, R2) that link to each other with vacuum system respectively; First reactor drum (R1) is connected with first vacuum pump (V1); Preceding first condensing surface (E1) that is provided with of first vacuum pump (V1), first condensing surface (E1) condensate outlet connects solvent recuperation storage tank (T1); Second reactor drum (R2) is connected with second vacuum pump (V2), preceding second condensing surface (E2) that is provided with of second vacuum pump (V2), and second condensing surface (E2) condensate outlet connects MONOMER RECOVERY storage tank (T2); With pipe connection, material shifting pump (P1, P2) is set respectively on the pipeline between first reactor drum (R1) and solvent recuperation storage tank (T1), second reactor drum (R2).
Described device solvent recuperation with remove peculiar smell and adopt different reactor drum and vacuum system, both are separate, desolventizing is preceding, remove peculiar smell after.First reactor drum is used for reclaiming the solvent of polyether polyol product, and second reactor drum is used to remove polyether polyol product peculiar smell.
Described second reactor bottom feeds steam duct, is used to remove peculiar smell.
Described first reactor drum has whisking appliance, coil pipe, and between whisking appliance and reactor body mechanical seal is arranged.The interface that leads to first vacuum pump is arranged at its top.
Described second reactor drum has whisking appliance, coil pipe, and between whisking appliance and reactor body mechanical seal is arranged.The interface that leads to second vacuum pump is arranged at its top.
Described first vacuum pump and the second vacuum pump preferred dry vacuum pump, vacuum system do not have waste water and produce, can solvent slop.
Utilize the solvent recovery unit of the utility model, its solvent recuperation is following with the process that removes peculiar smell:
1, POP is reflected among the first reactor drum R1 and carries out, and generates the POP product after accomplishing, and the POP product stirs, heats up, vacuumizes in the first reactor drum R1, and temperature is controlled at below 100 ℃, lets solvent under reduced pressure, steam.Solvent vapo(u)r is condensed into liquid during the first condensing surface E1 before through the first vacuum pump V1, utilizes run by gravity to solvent recuperation jar T1.
2, when the pressure among the first reactor drum R1 descend stable after, can think that solvent recuperation accomplishes.
3, the POP that removes behind the solvent is transferred to the second reactor drum R2, stirs, heats up, vacuumizes at the second reactor drum R2.The bottom of the second reactor drum R2 adds steam, utilizes vapour stream to take small molecules and unconverted monomer out of, removes the peculiar smell process temperature and can reach 130 ℃, to reach the purpose that removes POP product peculiar smell.
4, analyze the unconverted monomer concentration of POP product among the second reactor drum R2, qualified after, as product, packing.
The retrieving arrangement of the polyether polyol reaction solvent of the utility model, with solvent recuperation with remove monomer and micromolecular compound respectively two independently the unit carry out, comprise following advantage:
1) the reaction solvent retrieving arrangement of the utility model can make the POP product reclaim solvent and remove peculiar smell and carry out respectively, makes improving productivity.
2) the reaction solvent retrieving arrangement of the utility model can make recovery solvent and the characteristics that the equipment that removes peculiar smell is directed against separately design, and has avoided the waste in the design, like heat exchanger area, vacuum pump ability etc.
3) the reaction solvent retrieving arrangement of the utility model can be avoided reclaiming solvent and remove the pollution between the waste water that peculiar smell produces, and improves the amount that has reduced waste water when reclaiming solvent purity.
4) the reaction solvent retrieving arrangement of the utility model has improved the quality that removes peculiar smell, makes the POP product quality more excellent.
5) the reaction solvent retrieving arrangement of the utility model carries out different functions in different equipment, reduced the difficulty of operation, has reduced the possibility of makeing mistakes, and makes flow process more clear.
Below in conjunction with specific embodiment the utility model is described in detail.The protection domain of the utility model does not exceed with embodiment, but is limited claim.
Description of drawings
Fig. 1 is the structural representation of POP reaction solvent retrieving arrangement.
Comprising, the first reactor drum R1, the first condensing surface E1, the first vacuum pump V1, solvent recuperation jar T1, POP shifting pump P1, solvent shifting pump P2, the second reactor drum R2, the second condensing surface E2, the second vacuum pump V2, MONOMER RECOVERY storage tank T2.
Embodiment
The POP reaction solvent retrieving arrangement of the utility model comprises two reactor drums, two cover vacuum system and solvent recuperation storage tanks.One of them reactor drum is specifically designed to the recovery solvent, adopts dry vacuum pump, under high temperature, stirring, vacuum condition, solvent is extracted out from reactor drum, and the condensing surface before the vacuum pump of flowing through flow to the solvent recuperation storage tank after being condensed into liquid.The POP solvent recuperation is transferred to another reactor drum after fully in the question response device, and removes peculiar smell (small molecules and be monomer polymerized).Two reactor drums and the vacuum system that is connected, separate, desolventizing is preceding, remove peculiar smell after.
As shown in Figure 1, the retrieving arrangement of the POP reaction solvent of the utility model comprises two reactor drums that link to each other with vacuum system respectively; The first reactor drum R1 is used for reclaiming the solvent of polyether polyol product, is connected with the first vacuum pump V1, and the first condensing surface E1 is set before the first vacuum pump V1, and the first condensing surface E1 condensate outlet connects solvent recuperation storage tank T1; The second reactor drum R2 is used to remove polyether polyol product peculiar smell; Be connected with the second vacuum pump V2; The second condensing surface E2 is set before the second vacuum pump V2, and the second condensing surface E2 condensate outlet connects MONOMER RECOVERY storage tank T2, and second reactor drum R2 bottom feeds steam duct.
With pipe connection, POP shifting pump P1 is set on the pipeline between the first reactor drum R1 and the second reactor drum R2.
With pipe connection, solvent shifting pump P2 (pneumatic diaphragm pump) is set on the pipeline between the first reactor drum R1 and the solvent recuperation storage tank T1, the solvent after convenient will the recovery is reused.
The first reactor drum R1 has whisking appliance, coil pipe, and between whisking appliance and reactor body mechanical seal is arranged.The interface that leads to the first vacuum pump V1 is arranged at its top.
The second reactor drum R2 has whisking appliance, coil pipe, and between whisking appliance and reactor body mechanical seal is arranged.The interface that leads to the second vacuum pump V2 is arranged at its top.
The first vacuum pump V1 and the second vacuum pump V2 select dry vacuum pump for use, and vacuum system does not have waste water and produces, can solvent slop.
Utilize the POP reaction solvent retrieving arrangement of the utility model to reclaim the reaction solvent in the POP product and remove peculiar smell, its process is following:
Carry out 1.POP be reflected among the first reactor drum R1, generate the POP product, wherein contain solution and unreacted monomer and micromolecular compound.
2. after reaction was accomplished, the first reactor drum R1 heated up, and the first vacuum pump V1 starts, evaporating solvent.
3. after solvent vapo(u)r steamed, through the first condensing surface E1, the first condensing surface E1 was-10 ℃ of condensing surfaces, and solvent is cooled into liquid, under action of gravity, flows to solvent recuperation storage tank T1.Noncondensable gas is extracted out system by the first vacuum pump V1 among the first condensing surface E1.
4. after pressure descends gently among the first reactor drum R1, can think that solvent recuperation finishes.
5. start POP shifting pump P1, the POP behind the recovery solvent is transferred to the second reactor drum R2.
6. the second reactor drum R2 heats up, and the first vacuum pump V2 starts, and begins to remove peculiar smell.
7. steam slowly adds from the steam duct of second reactor drum R2 bottom.Unconverted monomer, small molecules and steam are taken out of by the second vacuum pump V2 together; After the second condensing surface E2 condensation; The liquid phase (monomer, water etc.) that reclaims flows to MONOMER RECOVERY jar T2 under action of gravity, noncondensable gas is discharged system through the second vacuum pump V2 among the second condensing surface E2.
POP product analysis among the second reactor drum R2 qualified after, stop to remove smell.The packing of product.
9. start solvent shifting pump P2, the recovery solvent among the solvent recuperation storage tank T1 is transferred to the first reactor drum R1, prepare the POP reaction of next batch.
Claims (5)
1. the retrieving arrangement of a polyether polyol reaction solvent; It is characterized in that: described retrieving arrangement comprises two reactor drums (R1, R2) that link to each other with vacuum system respectively; Wherein first reactor drum (R1) is connected with first vacuum pump (V1); Preceding first condensing surface (E1) that is provided with of first vacuum pump (V1), first condensing surface (E1) condensate outlet connects solvent recuperation storage tank (T1); Second reactor drum (R2) is connected with second vacuum pump (V2), preceding second condensing surface (E2) that is provided with of second vacuum pump (V2), and second condensing surface (E2) condensate outlet connects MONOMER RECOVERY storage tank (T2); With pipe connection, material shifting pump (P1, P2) is set respectively on the pipeline between first reactor drum (R1) and solvent recuperation storage tank (T1), second reactor drum (R2).
2. the retrieving arrangement of polyether polyol reaction solvent according to claim 1 is characterized in that: described second reactor drum (R2) bottom feeds steam duct.
3. the retrieving arrangement of polyether polyol reaction solvent according to claim 1 is characterized in that: described first reactor drum (R1) has whisking appliance, coil pipe, and between whisking appliance and reactor body mechanical seal is arranged; The interface that leads to first vacuum pump (V1) is arranged at its top.
4. the retrieving arrangement of polyether polyol reaction solvent according to claim 1 is characterized in that: described second reactor drum (R2) has whisking appliance, coil pipe, and between whisking appliance and reactor body mechanical seal is arranged; The interface that leads to second vacuum pump (V2) is arranged at its top.
5. the retrieving arrangement of polyether polyol reaction solvent according to claim 1 is characterized in that: described first vacuum pump (V1) and second vacuum pump (V2) are dry vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203316506U CN202201853U (en) | 2011-09-06 | 2011-09-06 | Recovery device for polymer polyether polyol reaction solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203316506U CN202201853U (en) | 2011-09-06 | 2011-09-06 | Recovery device for polymer polyether polyol reaction solvent |
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| Publication Number | Publication Date |
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| CN202201853U true CN202201853U (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203316506U Expired - Fee Related CN202201853U (en) | 2011-09-06 | 2011-09-06 | Recovery device for polymer polyether polyol reaction solvent |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045775A (en) * | 2013-03-11 | 2014-09-17 | 中国石油化工集团公司 | Separation and recovery method for solvent during production process of polymer polyol |
| CN104045776A (en) * | 2013-03-11 | 2014-09-17 | 中国石油化工集团公司 | Post-treatment system and post-treatment method for delaying pipeline plugging during production of polymer polyol |
| CN104045777A (en) * | 2013-03-11 | 2014-09-17 | 中国石油化工集团公司 | Post-treatment system and post-treatment method for monomer removing and deodorization in production of polymer polyol |
| CN109737034A (en) * | 2019-02-11 | 2019-05-10 | 东北大学 | A kind of dry vacuum system containing condenser before pumping |
-
2011
- 2011-09-06 CN CN2011203316506U patent/CN202201853U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045775A (en) * | 2013-03-11 | 2014-09-17 | 中国石油化工集团公司 | Separation and recovery method for solvent during production process of polymer polyol |
| CN104045776A (en) * | 2013-03-11 | 2014-09-17 | 中国石油化工集团公司 | Post-treatment system and post-treatment method for delaying pipeline plugging during production of polymer polyol |
| CN104045777A (en) * | 2013-03-11 | 2014-09-17 | 中国石油化工集团公司 | Post-treatment system and post-treatment method for monomer removing and deodorization in production of polymer polyol |
| CN104045776B (en) * | 2013-03-11 | 2018-05-04 | 中国石油化工集团公司 | The after-treatment system and method for delaying pipe blockage in polymer polyol alcohol production |
| CN104045777B (en) * | 2013-03-11 | 2018-08-31 | 中国石油化工集团公司 | For taking off single and deodorization after-treatment system and method in polymer polyol alcohol production |
| CN109737034A (en) * | 2019-02-11 | 2019-05-10 | 东北大学 | A kind of dry vacuum system containing condenser before pumping |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20170906 |