CN201962227U - Polyatomic alcohol recovery device in polyurethane synthesis reaction - Google Patents
Polyatomic alcohol recovery device in polyurethane synthesis reaction Download PDFInfo
- Publication number
- CN201962227U CN201962227U CN2011200234580U CN201120023458U CN201962227U CN 201962227 U CN201962227 U CN 201962227U CN 2011200234580 U CN2011200234580 U CN 2011200234580U CN 201120023458 U CN201120023458 U CN 201120023458U CN 201962227 U CN201962227 U CN 201962227U
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- CN
- China
- Prior art keywords
- inlet pipe
- polyvalent alcohol
- polyprotonic acid
- kettle
- polyatomic alcohol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 229920002635 polyurethane Polymers 0.000 title abstract description 5
- 239000004814 polyurethane Substances 0.000 title abstract description 5
- 238000003786 synthesis reaction Methods 0.000 title abstract 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 239000003054 catalyst Substances 0.000 claims abstract description 25
- 239000002253 acid Substances 0.000 claims description 53
- 239000012752 auxiliary agent Substances 0.000 claims description 21
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 6
- 229920000768 polyamine Polymers 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 150000007519 polyprotic acids Polymers 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 239000011550 stock solution Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- 239000002699 waste material Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model provides a polyatomic alcohol recovery device in polyurethane synthesis reaction. The polyatomic alcohol recovery device comprises a reaction kettle, a polyatomic alcohol prepolymerization kettle and a polybasic acid prepolymerization kettle, wherein a polyatomic alcohol inlet pipe and a first addition agent inlet pipe are arranged at the top of the polyatomic alcohol prepolymerization kettle, and a polybasic acid inlet pipe and a second addition agent inlet pipe are arranged at the top of the polybasic acid prepolymerization kettle. The polyatomic alcohol recovery device in the polyurethane synthesis reaction further comprises a polyatomic alcohol recovery kettle which is provided with a first catalyst inlet pipe and a first tail gas pipe, wherein one end of the first tail gas pipe is communicated with the polyatomic alcohol recovery kettle, and the other end of the first tail gas pipe is arranged at the top of the polyatomic alcohol prepolymerization kettle and is communicated with the polyatomic alcohol prepolymerization kettle. The polyatomic alcohol recovery kettle is added with the polyatomic alcohol recovery kettle on the basis of a conventional reaction kettle, tail gas in the polyatomic alcohol prepolymerization kettle is discharged into the polyatomic alcohol recovery kettle through the first tail gas pipe, and substances in the tail gas such as polyamine and the like are reacted with a composite catalyst to precipitate so as to obtain polyatomic alcohol. The polyatomic alcohol recovery device is simple in structure, and is capable of saving stock solution and reducing the production cost.
Description
Technical field
The utility model relates to the retrieving arrangement of polyvalent alcohol in a kind of urethane building-up reactions.
Background technology
Urethane has excellent electrical insulating property and thermostability, it is made by polyaddition reaction by a kind of polyol copolymer and a kind of polyisocyanate compound, can be used for making plastics, rubber, fiber, hard and flex foam, glue paste and coating etc., and polyurethane elastomer can have higher elasticity and intensity, excellent abrasive, oil-proofness, resistance to fatigue and anti-vibration resistance in the durometer level of broad, has the title of " abrasive rubber ".When urethane is applied to plastics and rubber, can be used as hard, semi-rigid, soft or monoblock type porous plastics or elastomerics.
Have the rebound resilience polyurethane molding of compact surfaces and porous core, promptly flexibel polyurethane monoblock type foams have various application, for example handrail, direction foams cover, spolier or sole.Urethane generally by isocyanic ester with contain at least two compound prepared in reaction that isocyanate groups are reactive hydrogen atom.Polyisocyanates is for containing the aliphatic hydrocarbon compound of 2 ~ 20 carbon atoms.During should the reacting of urethane, stoste need feed in the reactor reacts, and has tail gas and produces, and also contains polyvalent alcohol in the tail gas, and conventional device does not generally reclaim the polyvalent alcohol in the tail gas, causes waste.
Summary of the invention
The purpose of this utility model: in order to overcome the deficiencies in the prior art, the utility model provides the retrieving arrangement of polyvalent alcohol in the high urethane building-up reactions of a kind of organic efficiency.
The technical solution of the utility model: polyvalent alcohol retrieving arrangement in a kind of urethane building-up reactions, comprise reactor, polyvalent alcohol prepolymerization kettle and polyprotonic acid prepolymerization kettle, the top of described polyvalent alcohol prepolymerization kettle is provided with the polyvalent alcohol inlet pipe and the first auxiliary agent inlet pipe, the top of described polyprotonic acid prepolymerization kettle is provided with the polyprotonic acid inlet pipe and the second auxiliary agent inlet pipe, the polyvalent alcohol retrieving arrangement comprises that also polyvalent alcohol reclaims still in the urethane building-up reactions, described polyvalent alcohol reclaims still and is provided with first catalyst inlet pipe and first offgas duct, one end of first offgas duct reclaims still with polyvalent alcohol and is communicated with setting, and the other end of first offgas duct is arranged on the top of polyvalent alcohol prepolymerization kettle and is communicated with the polyvalent alcohol prepolymerization kettle.
Further setting of the present utility model: comprise that also polyprotonic acid reclaims still, the top that polyprotonic acid reclaims still is provided with second catalyst inlet pipe and second offgas duct, one end of second offgas duct reclaims still with polyprotonic acid and is communicated with setting, and the other end is arranged on the top of polyprotonic acid prepolymerization kettle and is communicated with the polyprotonic acid prepolymerization kettle.
Adopt above-mentioned further be provided with after, can reclaim polynary acid solution, reduced the waste of product stoste, reduced production cost.
Further setting of the present utility model: the bottom of described polyvalent alcohol prepolymerization kettle is provided with first and goes out pipe, the bottom of described polyprotonic acid prepolymerization kettle is provided with second and goes out pipe, the bottom that described polyvalent alcohol reclaims still is provided with the 4th and goes out pipe, and first goes out pipe, second goes out pipe and the 4th and go out pipe and draw last introducing reactor from the bottom that polyvalent alcohol prepolymerization kettle, polyprotonic acid prepolymerization kettle and polyvalent alcohol reclaim still respectively.
Adopt above-mentioned further be provided with after, the polyvalent alcohol that recovery is obtained drops into reaction kettle for reaction with original stoste, has both reduced waste and has also saved raw material, and production cost is reduced.
Further setting of the present utility model: the bottom of described polyprotonic acid recovery still is provided with the 3rd and goes out pipe, and the 3rd goes out pipe draws last introducing reactor from the bottom that polyprotonic acid reclaims still.
Adopt above-mentioned further be provided with after, the polyprotonic acid that recovery is obtained also drops into produces reaction in the reactor, both reduced waste and also saved raw material, and production cost is reduced.
Further setting of the present utility model: described polyvalent alcohol inlet pipe, the first auxiliary agent inlet pipe, polyprotonic acid inlet pipe, the second auxiliary agent inlet pipe, first catalyst inlet pipe and second catalyst inlet pipe are provided with control valve.
Adopt above-mentioned further be provided with after, be convenient to control the control of the input amount of production stoste, the amount of the stoste that accurate measurement control reaction is required has improved production efficiency.
Polyvalent alcohol retrieving arrangement of the present utility model has increased polyvalent alcohol and has reclaimed still on traditional reactor, tail gas in the polyvalent alcohol prepolymerization kettle enters polyvalent alcohol by first offgas duct and reclaims still, with material and the composite catalyst reaction precipitations such as polyamine in the tail gas, thereby obtain polyvalent alcohol; The utility model apparatus structure is simple, saves stoste, greatly reduces production cost.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
As shown in Figure 1, specific embodiment of the utility model is a polyvalent alcohol retrieving arrangement in a kind of urethane building-up reactions, comprise that reactor 1, polyvalent alcohol pre-polymerization 2, polyprotonic acid prepolymerization kettle 3 and polyvalent alcohol reclaim still 5, the top of polyvalent alcohol prepolymerization kettle 2 is provided with the polyvalent alcohol inlet pipe 21 and the first auxiliary agent inlet pipe 22, and the bottom is provided with first and goes out pipe 23; The top of polyprotonic acid prepolymerization kettle 3 is provided with the polyprotonic acid inlet pipe 31 and the second auxiliary agent inlet pipe 32, and the bottom of polyprotonic acid prepolymerization kettle 3 is provided with second and goes out pipe 33; Polyvalent alcohol reclaims still 5 and is provided with first catalyst inlet pipe 52 and first offgas duct 51, one end of first offgas duct 51 and polyvalent alcohol reclaim still and connect 5 logical settings, the other end of first offgas duct 51 is arranged on the top of polyvalent alcohol prepolymerization kettle 2 and is communicated with polyvalent alcohol prepolymerization kettle 2, and the bottom of polyvalent alcohol recovery still 5 is provided with the 4th and goes out pipe 53; First goes out pipe 23, second goes out pipe the 33 and the 4th and goes out pipe 53 and draw last introducing reactor 1 from the bottom that polyvalent alcohol prepolymerization kettle 2, polyprotonic acid prepolymerization kettle 3 and polyvalent alcohol reclaim still 5 respectively.
The polyvalent alcohol retrieving arrangement comprises that also polyprotonic acid reclaims still 4 in the urethane building-up reactions of the present utility model, the top that polyprotonic acid reclaims still 4 is provided with second catalyst inlet pipe 42 and second offgas duct 41, one end of second offgas duct 41 reclaims still 4 with polyprotonic acid and is communicated with setting, and the other end is arranged on the top of polyprotonic acid prepolymerization kettle 3 and is communicated with polyprotonic acid prepolymerization kettle 3.The bottom that polyprotonic acid reclaims still 4 is provided with the 3rd and goes out pipe 43, the three and go out pipe 43 and draw last introducing reactor 1 from the bottom that polyprotonic acid reclaims still 4.
During this practicality letter is novel, polyvalent alcohol inlet pipe 21, the first auxiliary agent inlet pipe 22, polyprotonic acid inlet pipe 31, the second auxiliary agent inlet pipe 32, first catalyst inlet pipe 52 and second catalyst inlet pipe 42 are provided with control valve 6, first offgas duct 51 is provided with control valve 6, the second offgas duct 41 near polyvalent alcohol recovery still 5 places and is provided with control valve 6 near polyprotonic acids recovery stills 4 places.
When reaction is carried out, open the control valve 6 on polyvalent alcohol inlet pipe 21, the first auxiliary agent inlet pipe 22, polyprotonic acid inlet pipe 31 and the second auxiliary agent inlet pipe 32, polyvalent alcohol and auxiliary agent are dropped in the polyvalent alcohol prepolymerization kettle 2 by the polyvalent alcohol inlet pipe 21 and the first auxiliary agent inlet pipe 22 respectively; Open the control valve 6 on first offgas duct 51 and first catalyst inlet pipe 52, composite catalyst is dropped into polyvalent alcohol by first catalyst inlet pipe 52 to be reclaimed in the still 5, the tail gas that produces enters polyvalent alcohol by first offgas duct 51 and reclaims in the still 5, after the reaction of polyamine in the tail gas and composite catalyst, polyvalent alcohol reclaims the 4th the going out pipe 53 and enter in the reactor 1 of bottom of still 5 by polyvalent alcohol.
The recovery principle and the polyvalent alcohol of polyprotonic acid are basic identical, when reaction is carried out, open the control valve 6 on polyprotonic acid inlet pipe 31, the second auxiliary agent inlet pipe 32, polyprotonic acid and auxiliary agent are dropped in the polyprotonic acid prepolymerization kettle 3 by the polyprotonic acid inlet pipe 31 and the second auxiliary agent inlet pipe 32 respectively; Open the control valve 6 on second offgas duct 41 and second catalyst inlet pipe 42, composite catalyst is dropped into polyprotonic acid by second catalyst inlet pipe 42 to be reclaimed in the still 4, the tail gas that produces enters polyprotonic acid by second offgas duct 41 and reclaims in the still 4, after the reaction of impurity substances in the tail gas and composite catalyst, polyprotonic acid reclaims the 3rd the going out pipe 43 and enter in the reactor 1 of bottom of still 4 by polyprotonic acid.
Claims (6)
1. polyvalent alcohol retrieving arrangement in the urethane building-up reactions, comprise reactor, polyvalent alcohol prepolymerization kettle and polyprotonic acid prepolymerization kettle, the top of described polyvalent alcohol prepolymerization kettle is provided with the polyvalent alcohol inlet pipe and the first auxiliary agent inlet pipe, the top of described polyprotonic acid prepolymerization kettle is provided with the polyprotonic acid inlet pipe and the second auxiliary agent inlet pipe, it is characterized in that: comprise that also polyvalent alcohol reclaims still, described polyvalent alcohol reclaims still and is provided with first catalyst inlet pipe and first offgas duct, one end of first offgas duct reclaims still with polyvalent alcohol and is communicated with setting, and the other end of first offgas duct is arranged on the top of polyvalent alcohol prepolymerization kettle and is communicated with the polyvalent alcohol prepolymerization kettle.
2. polyvalent alcohol retrieving arrangement in the urethane building-up reactions according to claim 1, it is characterized in that: comprise that also polyprotonic acid reclaims still, the top that polyprotonic acid reclaims still is provided with second catalyst inlet pipe and second offgas duct, one end of second offgas duct reclaims still with polyprotonic acid and is communicated with setting, and the other end is arranged on the top of polyprotonic acid prepolymerization kettle and is communicated with the polyprotonic acid prepolymerization kettle.
3. polyvalent alcohol retrieving arrangement in the urethane building-up reactions according to claim 1, it is characterized in that: the bottom of described polyvalent alcohol prepolymerization kettle is provided with first and goes out pipe, the bottom of described polyprotonic acid prepolymerization kettle is provided with second and goes out pipe, the bottom that described polyvalent alcohol reclaims still is provided with the 4th and goes out pipe, and first goes out pipe, second goes out pipe and the 4th and go out pipe and draw last introducing reactor from the bottom that polyvalent alcohol prepolymerization kettle, polyprotonic acid prepolymerization kettle and polyvalent alcohol reclaim still respectively.
4. according to polyvalent alcohol retrieving arrangement in claim 2 or the 3 described urethane building-up reactionss, it is characterized in that: the bottom of described polyprotonic acid recovery still is provided with the 3rd and goes out pipe, and the 3rd goes out pipe draws last introducing reactor from the bottom that polyprotonic acid reclaims still.
5. according to polyvalent alcohol retrieving arrangement in claim 1 or the 2 or 3 described urethane building-up reactionss, it is characterized in that: described polyvalent alcohol inlet pipe, the first auxiliary agent inlet pipe, polyprotonic acid inlet pipe, the second auxiliary agent inlet pipe, first catalyst inlet pipe and second catalyst inlet pipe are provided with control valve.
6. polyvalent alcohol retrieving arrangement in the urethane building-up reactions according to claim 4 is characterized in that: described polyvalent alcohol inlet pipe, the first auxiliary agent inlet pipe, polyprotonic acid inlet pipe, the second auxiliary agent inlet pipe, first catalyst inlet pipe and second catalyst inlet pipe are provided with control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200234580U CN201962227U (en) | 2011-01-25 | 2011-01-25 | Polyatomic alcohol recovery device in polyurethane synthesis reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200234580U CN201962227U (en) | 2011-01-25 | 2011-01-25 | Polyatomic alcohol recovery device in polyurethane synthesis reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201962227U true CN201962227U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200234580U Expired - Fee Related CN201962227U (en) | 2011-01-25 | 2011-01-25 | Polyatomic alcohol recovery device in polyurethane synthesis reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201962227U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483855A (en) * | 2015-12-21 | 2016-04-13 | 长乐恒申合纤科技有限公司 | Method for producing spandex filaments by utilizing spandex prepolymer waste liquid |
-
2011
- 2011-01-25 CN CN2011200234580U patent/CN201962227U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483855A (en) * | 2015-12-21 | 2016-04-13 | 长乐恒申合纤科技有限公司 | Method for producing spandex filaments by utilizing spandex prepolymer waste liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Polyatomic alcohol recovery device in polyurethane synthesis reaction Effective date of registration: 20120621 Granted publication date: 20110907 Pledgee: Bank of Wenzhou Limited by Share Ltd Liming branch Pledgor: Wenzhou Dengda Chemical Co., Ltd. Registration number: 2012990000316 |
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Effective date of registration: 20150618 Granted publication date: 20110907 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20151218 Granted publication date: 20110907 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160204 Granted publication date: 20110907 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20170204 Granted publication date: 20110907 |
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| PP01 | Preservation of patent right |
Effective date of registration: 20170517 Granted publication date: 20110907 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20171117 Granted publication date: 20110907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20180125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |