CN103466869A - Total reuse and recovery system for polyamide 6 monomer - Google Patents
Total reuse and recovery system for polyamide 6 monomer Download PDFInfo
- Publication number
- CN103466869A CN103466869A CN2013103090081A CN201310309008A CN103466869A CN 103466869 A CN103466869 A CN 103466869A CN 2013103090081 A CN2013103090081 A CN 2013103090081A CN 201310309008 A CN201310309008 A CN 201310309008A CN 103466869 A CN103466869 A CN 103466869A
- Authority
- CN
- China
- Prior art keywords
- evaporator tower
- reboiler
- evaporator
- tower
- pump
- 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.)
- Pending
Links
Images
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to a total reuse and recovery system for a polyamide 6 monomer. The system comprises an extraction water tank (1), a filter set, a feeding proportioner (5), a first evaporation tower (6), a first reboiler (7), a second evaporation tower (9), a second reboiler (10), a vacuum apparatus, a mixed flow pump, a condensed water tank (15) and a concentrate storage tank (12). According to the invention, during condensation and recovery of extracting water, the concentration proportion of cyclic oligomer in a concentrate can be effectively reduced, the concentration of the extracting water can be increased to more than 70%, even as high as about 95%, a system pipeline is not obstructed, the effect of 100% total reuse of monomer water is obtained, energy consumption in production is low, and good stability is obtained.
Description
Affiliated technical field
The present invention relates to the full reuse recovery system of a kind of polyamide fibre 6 monomer, the full reuse recovery system of the monomer that specifically polyamide fibre 6 produces when polyreaction and the treatment unit of oligopolymer, especially these monomers and oligopolymer.
Background technology
Polyamide fibre 6 is when polyreaction reaches balance; contain the oligopolymer of 1.5% left and right and 7～10% hexanolactam in equilibrium system; these oligopolymer and monomer hexanolactam can extract from chinlon 6 section inside at extraction process; be conducive to save production cost so extraction water is carried out to Recovery and recycle, also can be beneficial to environment protection.
Tradition reclaims to be had:
(1) directly with triple-effect evaporator, extraction water is concentrated, but can only concentrate to 70% left and right, concentration is high again, and oligopolymer separates out from concentrated solution, blocking pipe.And the full reuse of the concentrated solution that concentration is 70% can cause polyreaction unstable because water-content is on the high side to paradigmatic system, system pressure and liquid fluctuating are large, have a strong impact on product performance.
(2) first triple-effect evaporator carries out concentrate to extraction water, is promoted to the concentration of 60～70% left and right, then is distilled with distiller, reclaims a small amount of hexanolactam from concentrated solution.But the method need be used a large amount of vapor distillations, and energy consumption is higher, and oligopolymer can't reuse, forms waste.
(3) first triple-effect evaporator carries out concentrate to extraction water, is promoted to the concentration of 60～70% left and right, then through decomposition under high pressure, oligopolymer is cracked into to the oligomeric chain shaped polymer.But the method energy consumption is higher, and lytic effect is difficult to stable control.
Summary of the invention
In order to solve existing recovery monomer and oligopolymer, cause the Pa-6 Polymerization reaction unstable, and the problem that energy consumption is high, the full reuse recovery system of efficient polyamide fibre 6 monomer provided by the invention, extraction water can reach the concentration of 95% left and right in the process of concentration and recovery, and production energy consumption is low, good stability.
For reaching above purpose, the technical solution adopted for the present invention to solve the technical problems is: the full reuse recovery system of a kind of polyamide fibre 6 monomer comprises extraction water pot, filter set, charge proportion setter, the first evaporator tower, the first reboiler, the second evaporator tower, the second reboiler, vacuum unit, mixedflow pump, concentrated solution transferpump, condensate water pot, water of condensation transferpump, concentrated solution storage tank, the extraction water pot is connected with filter set, by charge proportion, adjust 9 joint device the first evaporator towers to be connected again, vacuum unit, condensate water pot, the first reboiler is connected respectively at the first evaporator tower, the first evaporator tower, the second reboiler device, the concentrated solution storage tank is connected respectively at the second evaporator tower, the first evaporator tower is connected by the concentrated solution transferpump with the second evaporator tower, the second evaporator tower top exit is connected with the heating medium entrance of the first reboiler, between the first evaporator tower and the first reboiler, be respectively equipped with mixedflow pump between the second evaporator tower and the second reboiler, the second evaporator tower is connected with the concentrated solution storage tank, the water of condensation storage tank is connected with the first evaporator tower and the second evaporator tower respectively by the water of condensation transferpump.Described filter set is to comprise the set filter series connection; Described charge proportion setter comprises a set of Controlling System, and this Controlling System is connected with an interlocking gear, with the charge proportion setter, is connected.Described mixedflow pump is connected on the pipeline of the first evaporator tower and the first reboiler and on the pipeline of the second evaporator tower and the second reboiler device; Described vacuum unit is connected with the first evaporator tower top outlet conduit; Described vacuum unit is comprised of condenser, oil-sealed rotary pump.
After adopting above technical scheme, the invention has the beneficial effects as follows: the extraction water in the chinlon 6 section production process, in the process of concentration and recovery, can effectively reduce the concentration ratio of cyclic oligomer in concentrated solution, not only extraction water can be brought up to more than 70%, the higher concentration that can reach 95% left and right, and can the block system pipeline, and can reach the effect of monomer water 100% full reuse, in addition, system energy consumption of the present invention is low, production cost is low, good stability, and control conveniently.
The accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention.
In figure: 1, extraction water pot; 2, extraction water transferpump; 3, filter set; 4, filter set; 5, charge proportion setter; 6, the first evaporator tower; 7, the first reboiler; 8, mixedflow pump; 9, the second evaporator tower; 10, the second reboiler; 11, mixedflow pump; 12, concentrated solution storage tank; 13, condenser; 14, oil-sealed rotary pump; 15, water of condensation storage tank; 16, water of condensation transferpump; 17, concentrated solution transferpump.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Shown in Fig. 1, the full reuse recovery system of a kind of polyamide fibre 6 monomer of the present invention, comprise extraction water pot 1, filter set 2 and 3, charge proportion setter 5, the first evaporator tower 6, the first reboiler 7, the second evaporator tower 9, the second reboiler 10, vacuum unit, mixedflow pump 11, condensate water pot 15, concentrated solution storage tank 12, extraction water pot 1 is connected with filter set, by the charge proportion setter, with the first evaporator tower 6, be connected again, vacuum unit, condensate water pot 15, the first reboiler 7 is connected with the first evaporator tower 6 respectively, the first evaporator tower 6, the second reboiler 10, concentrated solution storage tank 12 is connected with the second evaporator tower 9 respectively, the first evaporator tower 6 is connected by concentrated solution transferpump 16 with the second evaporator tower 9, the second evaporator tower 9 top exits are connected with the heating medium entrance of the first reboiler 7, be provided with mixedflow pump 8 between the first evaporator tower 6 and the first reboiler 7, be provided with mixedflow pump 11 between the second evaporator tower 9 and the second reboiler 10, the supplies circulation, increase evaporation effect, reduce energy consumption, water of condensation storage tank 15 is connected with the first evaporator tower 6 and the second evaporator tower 9 respectively by water of condensation transferpump 16, and water of condensation is delivered to two evaporator towers, regulates the evaporator tower internal pressure in processing requirement, reduces the volatilization of caprolactam monomer simultaneously, the second evaporator tower 9 is connected with concentrated solution storage tank 12, and storage tank 12 is for storing the monomer concentrated solution that can entirely be back to Pa-6 Polymerization.Described filter set is to comprise 2,3 set filter series connection; Described charge proportion setter 5 comprises a set of Controlling System, and for regulating the conveying ratio of extraction water and fresh hexanolactam, this Controlling System is connected with an interlock, with charge proportion setter 5, is connected.Described mixedflow pump 8 is connected on the pipeline of the first evaporator tower 6 and the first reboiler 7, and the first reboiler 7 heating steam used is the second evaporator tower 9 outlet steam; Mixedflow pump 11 is connected on the pipeline of the second evaporator tower 9 and the second reboiler device 10, and the second reboiler 10 heating steam used is steam-out (SO); Described vacuum unit is connected with the first evaporator tower 6 top outlet conduits.Described vacuum unit is comprised of condenser 13, oil-sealed rotary pump 14, the steam that extract out at cooling the first evaporator tower 6 tops of condenser 13, condensing reflux is to condensate water pot 15, and water of condensation can be delivered to the first evaporator tower 6 and the second evaporator tower 9 adjusting pressure by water of condensation transferpump 16.
Extraction water pot 1 of the present invention adopts the steam coils insulation, with extraction water transferpump 2, be connected, extraction water is after the filter set 3 and 4 of two series connection is filtered, be delivered to the first evaporator tower 6 through charge proportion setter 5 by a certain percentage with fresh hexanolactam, material, through the first reboiler 7 heating, circulates under the effect of mixedflow pump 8 between the first evaporator tower 6 and the first reboiler 7, and oil-sealed rotary pump 14 starts to vacuumize simultaneously, keep the certain negative pressure of the first evaporator tower 6, increase concentration effect.
Claims (5)
1. the full reuse recovery system of polyamide fibre 6 monomer, is characterized in that: comprise extraction water pot (1), filter set, charge proportion setter (5), the first evaporator tower (6), the first reboiler (7), the second evaporator tower (9), the second reboiler (10), vacuum unit, mixedflow pump, condensate water pot (15), concentrated solution storage tank (12), extraction water pot (1) is connected with filter set, by charge proportion setter (5), with the first evaporator tower (6), be connected again, vacuum unit, condensate water pot (15), the first reboiler (7) is connected with the first evaporator tower (6) respectively, the first evaporator tower (6), the second reboiler (10), concentrated solution storage tank (12) is connected with the second evaporator tower (9) respectively, the first evaporator tower (6) is connected by concentrated solution transferpump (17) with the second evaporator tower (9), the second evaporator tower (9) top exit is connected with the heating medium entrance of the first reboiler (7), be provided with mixedflow pump (8) between the first evaporator tower (6) and the first reboiler (7), the second evaporator tower (9) and second boils between (10) device again and is provided with mixedflow pump (11), water of condensation storage tank (15) is connected with the first evaporator tower (6) and the second evaporator tower (9) respectively by water of condensation transferpump (17).
2. the second evaporator tower (9) is connected with concentrated solution storage tank (12).
3. the full reuse recovery system of a kind of polyamide fibre 6 monomer according to claim 1 is characterized in that: described filter set is to comprise (2), the series connection of (3) set filter; Described charge proportion setter (5) comprises a set of Controlling System, and this Controlling System is connected with an interlock, with charge proportion setter (5), is connected.
4. the full reuse recovery system of a kind of polyamide fibre 6 monomer according to claim 1, it is characterized in that: described mixedflow pump (8) is connected on the pipeline of the first evaporator tower (6) and the first reboiler (7), and mixedflow pump (11) is connected on the pipeline of the second evaporator tower (9) and the second reboiler device (10); Described vacuum unit is connected with the first evaporator tower (6) top outlet conduit.
5. the full reuse recovery system of a kind of polyamide fibre 6 monomer according to claim 1, it is characterized in that: described vacuum unit is comprised of condenser (13), oil-sealed rotary pump (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103090081A CN103466869A (en) | 2013-07-23 | 2013-07-23 | Total reuse and recovery system for polyamide 6 monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103090081A CN103466869A (en) | 2013-07-23 | 2013-07-23 | Total reuse and recovery system for polyamide 6 monomer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103466869A true CN103466869A (en) | 2013-12-25 |
Family
ID=49791957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103090081A Pending CN103466869A (en) | 2013-07-23 | 2013-07-23 | Total reuse and recovery system for polyamide 6 monomer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103466869A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892479A (en) * | 2014-10-13 | 2015-09-09 | 江苏弘盛新材料股份有限公司 | Caprolactam monomer recycling system |
| CN111269412A (en) * | 2020-02-14 | 2020-06-12 | 东华大学 | Method for recycling caprolactam |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000327774A (en) * | 1999-05-19 | 2000-11-28 | Toray Ind Inc | Production of nylon resin |
| US7550516B2 (en) * | 2001-05-10 | 2009-06-23 | Interface, Inc. | Method for extracting nylon from waste materials |
| CN101880386A (en) * | 2010-07-09 | 2010-11-10 | 北京三联虹普纺织化工技术有限公司 | Recovery method of hexanolactam in polyamide-6 continuous polymerization production process |
| CN101885842A (en) * | 2010-07-09 | 2010-11-17 | 北京三联虹普纺织化工技术有限公司 | Continuous polymerization production technology for polyamide fibre 6 |
| CN101899152A (en) * | 2010-07-09 | 2010-12-01 | 北京三联虹普纺织化工技术有限公司 | Preparation of titanium dioxide additive in nylon-6 continuous polymerization production process |
| CN202116475U (en) * | 2011-07-05 | 2012-01-18 | 浙江华建尼龙有限公司 | Recovery processing device for nylon-6 chip extraction water |
| CN202638017U (en) * | 2012-05-28 | 2013-01-02 | 江阴市强力化纤有限公司 | Polyamide-6 continuous production water extraction recovery system |
| CN202730054U (en) * | 2012-07-27 | 2013-02-13 | 福建锦江科技有限公司 | Caprolactam monomer recovery system for high-volume production of polyamide slice |
| CN203474577U (en) * | 2013-07-23 | 2014-03-12 | 江苏海阳化纤有限公司 | All-reusing recycling system for chinlon 6 monomers |
-
2013
- 2013-07-23 CN CN2013103090081A patent/CN103466869A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000327774A (en) * | 1999-05-19 | 2000-11-28 | Toray Ind Inc | Production of nylon resin |
| US7550516B2 (en) * | 2001-05-10 | 2009-06-23 | Interface, Inc. | Method for extracting nylon from waste materials |
| CN101880386A (en) * | 2010-07-09 | 2010-11-10 | 北京三联虹普纺织化工技术有限公司 | Recovery method of hexanolactam in polyamide-6 continuous polymerization production process |
| CN101885842A (en) * | 2010-07-09 | 2010-11-17 | 北京三联虹普纺织化工技术有限公司 | Continuous polymerization production technology for polyamide fibre 6 |
| CN101899152A (en) * | 2010-07-09 | 2010-12-01 | 北京三联虹普纺织化工技术有限公司 | Preparation of titanium dioxide additive in nylon-6 continuous polymerization production process |
| CN202116475U (en) * | 2011-07-05 | 2012-01-18 | 浙江华建尼龙有限公司 | Recovery processing device for nylon-6 chip extraction water |
| CN202638017U (en) * | 2012-05-28 | 2013-01-02 | 江阴市强力化纤有限公司 | Polyamide-6 continuous production water extraction recovery system |
| CN202730054U (en) * | 2012-07-27 | 2013-02-13 | 福建锦江科技有限公司 | Caprolactam monomer recovery system for high-volume production of polyamide slice |
| CN203474577U (en) * | 2013-07-23 | 2014-03-12 | 江苏海阳化纤有限公司 | All-reusing recycling system for chinlon 6 monomers |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892479A (en) * | 2014-10-13 | 2015-09-09 | 江苏弘盛新材料股份有限公司 | Caprolactam monomer recycling system |
| CN111269412A (en) * | 2020-02-14 | 2020-06-12 | 东华大学 | Method for recycling caprolactam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103408086A (en) | MVR (Mechanical Vapor Recompression) vapor-stripping deamination system and application method thereof | |
| CN105130080B (en) | A kind of supercritical water oxidation handles the System and method for of high volatile organic wastewater | |
| CN103408514A (en) | Technique and device for recovering tetrahydrofuran by pervaporation method | |
| CN102838244A (en) | Landfill leachate treatment process and device | |
| CN107913525B (en) | Recovery device and recovery method for low boiling point substance | |
| CN104843816B (en) | A kind of heat pump flash distillation stripping deamination coproduction of ammonia sulfate and the method for ammonia | |
| CN105498260A (en) | High-efficiency and energy-saving caprolactam recovery technology | |
| CN204034286U (en) | Board-like mechanical vapour recompression evaporator | |
| CN208893656U (en) | The equipment of NMP recycling heat pump distillation in a kind of production of lithium electricity | |
| CN211445385U (en) | Contain organic solvent's salt waste water evaporation equipment | |
| CN202193691U (en) | Equipment for triple-effect waste water desalination process | |
| CN216677026U (en) | Efficient NMP rectification purification system | |
| CN103466869A (en) | Total reuse and recovery system for polyamide 6 monomer | |
| CN205886265U (en) | Concentrated retrieval and utilization device of caprolactam aqueous solution | |
| CN203474577U (en) | All-reusing recycling system for chinlon 6 monomers | |
| CN104724776A (en) | Device and method for mixing secondary steam into pressurized water in pressurized evaporation | |
| CN102260141B (en) | Production method and device of refined glycerin in non-distillation techniques | |
| CN203159264U (en) | Low-temperature multi-effect distillation seawater desalting system | |
| CN104557421A (en) | Triple-effect toluene recovery technology | |
| CN202072574U (en) | Ammonium nitrate waste water processing unit | |
| CN106830482A (en) | A kind of afterheat steam utilizes seawater desalination system | |
| CN103663830B (en) | Retracting device for Sewage treatment dimethylamine | |
| CN104829032A (en) | Ammonia-nitrogen wastewater treatment system | |
| CN108250065B (en) | Device and method for recovering perfluorooctanoic acid from fluoropolymer drying tail gas | |
| CN103663398B (en) | Method and device for utilizing heat energy of diammonium phosphate neutralization tail gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131225 |