CN101429281A - Charging method used in polyphenylene sulfide production - Google Patents
Charging method used in polyphenylene sulfide production Download PDFInfo
- Publication number
- CN101429281A CN101429281A CNA2008101771951A CN200810177195A CN101429281A CN 101429281 A CN101429281 A CN 101429281A CN A2008101771951 A CNA2008101771951 A CN A2008101771951A CN 200810177195 A CN200810177195 A CN 200810177195A CN 101429281 A CN101429281 A CN 101429281A
- Authority
- CN
- China
- Prior art keywords
- solvent
- reactor
- polyphenylene sulfide
- added
- add
- 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.)
- Granted
Links
Landscapes
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
Abstract
The invention discloses a feeding method in the process of production of polyphenylene sulfide, which guarantees the mixture ratio of materials and simultaneously can reduce energy consumption, shorten the feeding time and guarantee smooth operation of subsequent reaction. The feeding method is characterized in that: firstly, the addition of a solvent is 30 to 40 percent of the total weight of the solvent when the solvent is added into a reaction kettle for the first time; secondly, the residual solvent is added into the reaction kettle after the procedure of temperature rise and dehydration is over, and added until the temperature in the reaction kettle is reduced to be suitable for addition of paradichlorobenzene; and thirdly, the paradichlorobenzene and all the residual solvent are added into the reaction kettle, and the feeding process is over. The feeding method can be widely applied to the process of production of the polyphenylene sulfide.
Description
Technical field
The present invention relates to the charging process in the polyphenylene sulfide production process.
Background technology
Polyphenylene sulfide (being called for short PPS) is a kind of novel high-performance thermoplastic resin, have good thermostability, chemical stability, erosion resistance and electrical property etc., have widely at aspects such as aerospace, electric, petrochemical complex, machinofacture, light industry, food and to use, market outlook are wide.The main method principle of suitability for industrialized production PPS resin is at present: with sodium sulphite and santochlor is raw material, in the presence of solvent N-N-methyl-2-2-pyrrolidone N-(being called for short NMP), is catalyzer with the alkali metal compound, carries out polycondensation and make under certain temperature and pressure.Generally all use moisture sodium sulphite in the production, thereby need earlier its dehydrating step that heats up.The main processes of aforementioned production method is: earlier required solvent NMP, moisture sodium sulphite, catalyzer are all added in the reactor, be rapidly heated then and deviate from moisture content to about 200 ℃; After dehydration finishes, need reactor to be lowered the temperature, be fit to add another reaction raw materials santochlor until dropping to water coolant---be generally when not being higher than 173 ℃, could in reactor, add santochlor; Then enter polymerization stage, obtain the polyphenylene sulfide crude product after the polyreaction.Though use above-mentioned charging process can effectively prevent the volatilization of santochlor in the production process, guarantee proportioning raw materials, the cooling operation has not only prolonged the reaction times but also increased energy expenditure.
Summary of the invention
Technical problem to be solved by this invention is: will provide a kind of can reduce energy waste when guaranteeing material proportion, curtail the feeding hours, guarantee polyphenylene sulfide that subsequent reactions carries out the smoothly charging process in producing.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the charging process during described polyphenylene sulfide is produced is characterized in: (1) when feeding in raw material in reactor first, the add-on of solvent accounts for 30～40% of solvent for use gross weight; (2) after the intensification dehydration procedure finishes, in reactor, add remaining solvent again, this time the add-on of solvent is fit to drop into till the temperature of santochlor so that the temperature in the reactor is reduced to; (3) then in reactor, add santochlor and remaining solvent for use, the reinforced end.
Above described intensification dehydration procedure finish the quantity of solvent that the back adds account for 40～50% of solvent gross weight in reactor.
Advantage of the present invention is: in process of production solvent is adopted quantitative in batches adding method, reduce the initial input amount of solvent, can accelerate dewatering speed, reduce the heat that this process need provide; And can utilize solvent to reduce temperature in the subsequent step, thus avoided using in the described method of background technology the process of cooling water temperature, effectively reduced material loss and energy consumption.
Embodiment
The invention will be further described below by specific embodiment.
Embodiment 1
Stainless steel 180L reactor adds solvent NMP40.0kg and opens stirring, adds moisture sodium sulphite 23.40kg, catalyzer 3.00kg successively, feeds nitrogen to take steam out of, and moisture is rapidly heated; After dehydration finishes; stop heating; close protection gas, in reactor, add 40.0kg solvent NMP, off-response still valve fast; treat to open charging valve after temperature steadily; this moment, temperature was reduced to 170.2 ℃, added santochlor 22.05kg, added solvent NMP20.0kg at last; open heating, enter polymerization stage.
Embodiment 2
Stainless steel 180L reactor adds solvent NMP30.0kg and opens stirring, adds moisture sodium sulphite 23.40kg, catalyzer 3.00kg successively, feeds nitrogen to take steam out of, and moisture is rapidly heated; After dehydration finishes; stop heating; close protection gas, in reactor, add 50.0kg solvent NMP, off-response still valve fast; treat to open charging valve after temperature steadily; this moment, temperature was reduced to 171.8 ℃, added santochlor 22.05kg, added solvent NMP20.0kg at last; open heating, enter polymerization stage.
Embodiment 3
Stainless steel 180L reactor adds solvent NMP28.0kg and opens stirring, adds moisture sodium sulphite 15.60kg, catalyzer 1.50kg successively, feeds nitrogen to take steam out of, and moisture is rapidly heated; After dehydration finishes; stop heating; close protection gas, in reactor, add 28.0kg solvent NMP, off-response still valve fast; treat to open charging valve after temperature steadily; this moment, temperature was reduced to 167.5 ℃, added santochlor 14.70kg, added solvent NMP14.0kg at last; open heating, enter polymerization stage.
In the invention process process, dehydration is rapid, and is respond well, and the system cooling of dehydration back has been avoided the use of water coolant rapidly, reduced energy consumption, and no santochlor is overflowed in the reinforced process, and subsequent polymerisation reaction in order.
Claims (2)
1, the charging process during polyphenylene sulfide is produced is characterized in that: (1) when feeding in raw material in reactor first, the add-on of solvent accounts for 30～40% of solvent for use gross weight; (2) after the intensification dehydration procedure finishes, in reactor, add remaining solvent again, this time the add-on of solvent is fit to drop into till the temperature of santochlor so that the temperature in the reactor is reduced to; (3) then in reactor, add santochlor and remaining solvent for use, the reinforced end.
2, charging process according to claim 1 is characterized in that: the solvent that the intensification dehydration procedure adds in reactor after finishing accounts for 40～50% of solvent gross weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101771951A CN101429281B (en) | 2008-12-09 | 2008-12-09 | Charging method used in polyphenylene sulfide production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101771951A CN101429281B (en) | 2008-12-09 | 2008-12-09 | Charging method used in polyphenylene sulfide production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101429281A true CN101429281A (en) | 2009-05-13 |
| CN101429281B CN101429281B (en) | 2011-03-23 |
Family
ID=40644932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101771951A Active CN101429281B (en) | 2008-12-09 | 2008-12-09 | Charging method used in polyphenylene sulfide production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101429281B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037728A (en) * | 2015-06-10 | 2015-11-11 | 张家港市新盛新材料有限公司 | Polyphenylene sulfide production method |
| CN108147372A (en) * | 2017-12-05 | 2018-06-12 | 宜宾天原集团股份有限公司 | The preparation method of vulcanized sodium reacting precursor in polyphenylene sulfide production |
-
2008
- 2008-12-09 CN CN2008101771951A patent/CN101429281B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037728A (en) * | 2015-06-10 | 2015-11-11 | 张家港市新盛新材料有限公司 | Polyphenylene sulfide production method |
| CN108147372A (en) * | 2017-12-05 | 2018-06-12 | 宜宾天原集团股份有限公司 | The preparation method of vulcanized sodium reacting precursor in polyphenylene sulfide production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101429281B (en) | 2011-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101555396B (en) | Production method of urea-formaldehyde resin adhesive | |
| CN101423577B (en) | Method for preparing polyacrylic acid or sodium polyacrylate | |
| CN101979455B (en) | Urea-formaldehyde glue and preparation method thereof | |
| WO2014146522A1 (en) | Method for preparing tdi isocyanurate | |
| CN102276179B (en) | Phenol modified aliphatic water reducer and preparation method thereof | |
| CN104162625B (en) | A kind of binder for casting and preparation method thereof | |
| CN101429281B (en) | Charging method used in polyphenylene sulfide production | |
| CN103012633A (en) | Preparation method of high-acetalization-degree high-flowability polyvinyl butyral resin | |
| CN102675640B (en) | Method for controlling process conditions for production and synthesis of polyphenylene sulfide | |
| CN102875753B (en) | Lignin modified phenolic resin and using method thereof | |
| CN102199265B (en) | Long carbon chain nylon modified phenolic resin and preparation method thereof | |
| CN101786995A (en) | Method for preparing granular hexamethylol melamine | |
| CN102718927A (en) | Production method for coumarone resin | |
| CN1279071C (en) | Production method of terpene resin | |
| CN113461890B (en) | Continuous production method of high imino methylated melamine formaldehyde resin | |
| CN100537700C (en) | A kind of preparation method of high-temperature cross-linking agent | |
| CN104072755A (en) | Novel three kettle polymerization process of chinlon 6 | |
| CN102977302A (en) | Preparation method of glue for sheet materials | |
| CN102108115B (en) | Phenolic resin for environment-friendly thermoplastic refractory material and preparation method thereof | |
| CN204454653U (en) | The synthesizer of Tai-Ace S 150 | |
| CN107417907A (en) | A kind of preparation method of high crystalline poly (arylene ether nitrile) | |
| CN102603564A (en) | Synthesis technique of alpha-cyanoacrylate monomer | |
| CN105732924A (en) | Preparation method of boron modified phenolic resins | |
| CN104649308B (en) | The synthesizer of Tai-Ace S 150 and utilize the method for its synthesis Tai-Ace S 150 | |
| CN101475688A (en) | Polymerization process for fiber-grade polyphenyl thioether production process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHANGJIAGANG XINSHENG NEW MATERIAL CO., LTD. Free format text: FORMER OWNER: JIANGSU XINZHONG INVESTMENT CO., LTD. Effective date: 20110602 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215600 NO. 66, ZHENXING ROAD, YANGSHE TOWN, ECONOMIC DEVELOPMENT ZONE, ZHANGJIAGANG CITY, JIANGSU PROVINCE TO: 215600 NO. 1, CHANGFU ROAD, DONGSHA CHEMICAL INDUSTRY CLUSTER, LEYU TOWN, ZHANGJIAGANG, SUZHOU CITY, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110602 Address after: Suzhou City, Jiangsu province 215600 Zhangjiagang Le Yu Zhen Dong Sha chemical zone often Road No. 1 Patentee after: Zhangjiagang Xinsheng New Material Co., Ltd. Address before: Yangshe 215600 Jiangsu Province Economic Development Zone Zhangjiagang City Zhenxing Road No. 66 Patentee before: Jiangsu Xinzhong Investment Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200710 Address after: 215600 Donglai Jiangqiao, Yangshe Town, Zhangjiagang City, Jiangsu Province (in Zhangjiagang East China Marine Valve Manufacturing Co., Ltd.) Patentee after: Jiangsu Xinren Environmental Protection Technology Co.,Ltd. Address before: Suzhou City, Jiangsu province 215600 Zhangjiagang Le Yu Zhen Dong Sha chemical zone often Road No. 1 Patentee before: ZHANGJIAGANG XINSHENG NEW MATERIAL Co.,Ltd. |