CN201598250U - Polymerizing pot cleaning system - Google Patents
Polymerizing pot cleaning system Download PDFInfo
- Publication number
- CN201598250U CN201598250U CN2009202006539U CN200920200653U CN201598250U CN 201598250 U CN201598250 U CN 201598250U CN 2009202006539 U CN2009202006539 U CN 2009202006539U CN 200920200653 U CN200920200653 U CN 200920200653U CN 201598250 U CN201598250 U CN 201598250U
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- Prior art keywords
- reactor
- cleaning
- solvent
- polymerizing
- pot
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- 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.)
- Expired - Fee Related
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- Polyurethanes Or Polyureas (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
The utility model provides a polymerizing pot cleaning system, which is characterized by adding a solvent preheating pot in an integral polymerizing device. Solvent is preheated to a specified cleaning temperature to save heating time of the solvent in a reactor, and simultaneously rotation speed of a conveyor pump variable frequency motor of a second reactor is increased to increase polymer flow and pressure in the second reactor, reduce transfer time of polymer in the second reactor, supplement polymer solution volume affected by cleaning, and guarantee storage time control standard and spinning solution quality. Compared with the prior art, the polymerizing pot cleaning system realizes cleaning of a polyurethane dry spinning polymerizing pot without downtime or lifting of spinning and without reduction of yield or product quality, thereby greatly improving production efficiency and economical benefit.
Description
Technical field
The utility model relates to the manufacturing technology and the equipment of spandex, is specially a kind of device that urethane dry-spinning polymeric kettle cleans that is used for.
Background technology
Spandex softness and high resilience is not only next to the shin but also do not have restraint feeling when wearing has good wear behavior. be subjected to human consumer's welcome deeply.In recent years, spandex not only is used for field of textiles, also is applied to fields such as industry, medical treatment, physical culture, and Application Areas constantly enlarges, output also constantly increases.The raw material of spandex---urethane all is segmented copolymer, and its building-up process is generally finished in two steps at present.The first step is prepolymerization, promptly with polyethers or polyester and aromatic diisocyanate reaction, generates the molecule two ends and contains isocyanate group (performed polymer NCO).Second step adopted chainextender and prepolymer to continue reaction, and the generation relative molecular mass is 20000～50000 linear block polymers of polyurethane, polymkeric substance via pipe-line transportation to spinning.Poly-unit is mainly supplied with groove and pump group etc. by melting chamber, feed sump, auxiliary material tempering tank, first reactor (pre-polymerization), second reactor (polymerization), stoste tempering tank, stoste and is formed.
Reactor uses for some time, and polymer residue increases on still wall and the agitator, can cause that strainer pressure increases rapidly, and the spinning doubling increases, and top-quality product rate reduces, and the waste silk waste liquid increases, and output descends, even can not ordinary production.Therefore, polyurethane polyureas is incorporated into the necessary cleaning reaction device of some cycles.Yet the solvent cleaning method that adopts needs to add processes such as solvent, intensification, insulation cleaning and solvent removal usually, and triplicate is to dissolve and to clear the pollution off.Not only required time is longer to clean once reactor, influences spandex output, and will produce a large amount of waste liquids and waste silk, directly influences the business economic benefit.
The utility model content
The purpose of this utility model is at the deficiencies in the prior art, and the device that provides a kind of polymeric kettle to clean makes the cleaning of urethane dry-spinning polymeric kettle not influence spandex output and quality.
The purpose of this utility model can realize by following technique measures:
A kind of system for cleaning polymeric kettle described in the utility model is to increase the solvent still preheater in whole poly-unit, and described solvent still preheater is that stainless steel is vertical, band heating jacket reactor, and requiring total volume is 0.5～5M
3, by pipeline respectively with first reactor with link to each other with second reactor, solvent is preheating to the cleaning design temperature, save the heat-up time of solvent in reactor; The transferpump variable-frequency motor rotating speed of described second reactor is 40～70r/min, polymer flow rate is 70～90L/min, to increase polymer flow rate and pressure in second reactor, lower the polymkeric substance handover time in second reactor, supply the amount polishing with cleaning the polymer dope that is influenced, and guarantee the shelf-time control criterion, guarantee the quality of spinning solution.
Compared with prior art, when the utility model had realized that urethane dry-spinning polymeric kettle cleans, spinning was not stopped, is not carried the position, and output does not reduce, and product quality does not reduce, and has improved production efficiency and economic benefit greatly.
Description of drawings
The process flow diagram that Fig. 1 cleans for the utility model polymeric kettle.
Embodiment
Further narrate the utility model below in conjunction with embodiment and accompanying drawing thereof.Specific embodiment does not constitute the restriction to the utility model claim just in order to further specify the utility model.
A kind of system for cleaning polymeric kettle, it is to increase a solvent US still preheater in whole poly-unit, this still preheater is a stainless steel vertical response still, band heating jacket device, requiring total volume is 1.2M
3, the US primary heater unit by pipeline respectively at two reactors link to each other (seeing accompanying drawing 1).Before the cleaning, US is preheating to 120 ℃ of cleaning temperatures with the solvent still preheater; Simultaneously, improve the second reactor transferpump variable-frequency motor rotating speed, make the polymer dope flow increase to 90L/min to 50r/min.
Claims (3)
1. a system for cleaning polymeric kettle is characterized in that having increased the solvent still preheater in whole poly-unit, and this solvent still preheater is the vertical band heating jacket of a stainless steel reactor, and requiring total volume is 0.5～5M
3, by pipeline respectively with first reactor with link to each other with second reactor.
2. a kind of system for cleaning polymeric kettle according to claim 1 is characterized in that the solvent preheating temperature is: 100～130 ℃.
3. a kind of system for cleaning polymeric kettle according to claim 1 is characterized in that the transferpump variable-frequency motor rotating speed of second reactor is 40～70r/min, and polymer flow rate is 70～90L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202006539U CN201598250U (en) | 2009-11-13 | 2009-11-13 | Polymerizing pot cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202006539U CN201598250U (en) | 2009-11-13 | 2009-11-13 | Polymerizing pot cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201598250U true CN201598250U (en) | 2010-10-06 |
Family
ID=42809300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202006539U Expired - Fee Related CN201598250U (en) | 2009-11-13 | 2009-11-13 | Polymerizing pot cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201598250U (en) |
-
2009
- 2009-11-13 CN CN2009202006539U patent/CN201598250U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20101006 Termination date: 20171113 |