CN1418896A - Method for adding assistant used in polymerization of polyvinyl chloride production - Google Patents
Method for adding assistant used in polymerization of polyvinyl chloride production Download PDFInfo
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- CN1418896A CN1418896A CN 01135175 CN01135175A CN1418896A CN 1418896 A CN1418896 A CN 1418896A CN 01135175 CN01135175 CN 01135175 CN 01135175 A CN01135175 A CN 01135175A CN 1418896 A CN1418896 A CN 1418896A
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- polymerization
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The addition method of polymerization adjuvant in the production of polyvinyl chloride is characterized by that according to the respective addition order all the polymerization adjuvants can be fed into polymerization reaction still by means of a shared pipe finally. Said invention does not change its original production process, does not change composition and weight of the adjuvants anjd does not change the addition sequence of the adjuvants, only utilizes the action between the adjuvants, and adopts other polymerization adjuvant to fully flush the initiator feeding pipe so as to make the initiator feeding pipe can not produce self-polymerization and cohesion of plusticized material. Said present invention is safe, reliable, can reduce environment pollution.
Description
Technical field
The present invention relates to Production of PVC technology, particularly the adding method of reagent and additive in polymerization in polymeric kettle.
Background technology
Suspension type polyvinyl-chloride production is to be raw material with the vinyl chloride monomer, and in production technique, polymer raw joins in the polymeric kettle, and reagent and additive in polymerization needs enter into polymeric kettle by other pipeline.Traditional production device is that initiator, rinse solvent enter into polymeric kettle by a pipeline, chain-transfer agent (the polyvinyl chloride trade mark product that has does not need chain-transfer agent), PH conditioning agent, polyreaction terminator enter into polymeric kettle by another pipeline, between every kind of product jar and pipeline program-controlled valve are housed all.Article two, pipeline enters into polymeric kettle by two inlets respectively.The disadvantage of this production equipment is that initiator feed pipe autopolymer bonding phenomenon is serious, and it is serious to cause feed-pipe to stop up, and every production one still just must initiator filling tube of cleaning, otherwise as easy as rolling off a logly causes the reinforced fault of initiator and influence ordinary production.And the working strength of workers height, environmental pollution is serious.In suspension type polyvinyl-chloride was produced, the autopolymer of initiator filling tube bonding phenomenon also was of the same trade, the ubiquitous problem of similar technological process device.The direction of the production forward closure of suspension type polyvinyl-chloride operation at present develops, and the frequent dismounting and cleaning of initiator feed pipe brings bigger limitation and unsafe factor will inevitably for airtight production technique in the production process.
Summary of the invention
Technical problem to be solved by this invention is the generation that overcomes the initiator feed pipe autohemagglutination bonding phenomenon that the adding mode of reagent and additive in polymerization in the existing Production of PVC brought, and the adding mode of reagent and additive in polymerization provided by the invention has then been avoided the autohemagglutination and the bonding of initiator.
The adding method of polymerization used additives in the Production of PVC of the present invention is characterized in that each reagent and additive in polymerization enters polymeric kettle according to the last public pipeline of each addition sequence.
The present invention does not change the production technique of polyvinyl chloride, does not change the component and the amount of reagent and additive in polymerization, does not change the order of addition(of ingredients) of original reagent and additive in polymerization.The present invention just uses the effect between reagent and additive in polymerization, adopts other reagent and additive in polymerization fully to wash the initiator feed pipe, makes the initiator feed pipe can't produce autohemagglutination and resinifying agent bonding.Having changed original reagent and additive in polymerization divides two inlets of two pipelines to enter the defective that polymeric kettle brings.
For the suspension type polyvinyl-chloride production technique, used reagent and additive in polymerization is generally initiator, rinse solvent, chain-transfer agent, PH conditioning agent, terminator, and wherein the Production of PVC of the trade mark that has of chain-transfer agent does not need.The addition sequence of reagent and additive in polymerization is followed successively by: initiator, rinse solvent, chain-transfer agent (can not have), PH conditioning agent, terminator.Method after the present invention improves is the bottom that the filling tube of chain-transfer agent, PH conditioning agent, terminator is connected on the initiator filling tube, as long as installation requirement allows, the filling tube of chain-transfer agent, PH conditioning agent, terminator and the inlet of common-use tunnel should be tried one's best near the inlet of initiator, rinse solvent and common-use tunnel.Chain-transfer agent, the PH conditioning agent that utilization constantly adds to polymeric kettle in polymerization process carries out the terminator that the flushing of initiator filling tube and polymerization add to polymeric kettle latter stage is stoped within it polyreaction fully, stops autopolymer and resinifying agent bonding in it.
Beneficial effect of the present invention is:
No autohemagglutination and bonding phenomenon are moved 1 year and all need not be cleared up in the initiator filling tube, and safe and reliable to operation, have reduced environmental pollution, greatly reduce working strength of workers, and effect is remarkable.
Description of drawings
Fig. 1 is a process schematic representation of the present invention;
Fig. 2 is existing process schematic representation.
Among the figure: 1 polymeric kettle, 2 blind plate SV-* * * represent program-controlled valve, V-* * * * represent manually-operated gate, TU: toluene, LB: azo 1, the 4-methyl pentane nitrile, LE: two-2-ethylhexyl peroxidation carbonic ether, BD: sodium hydroxide, NG2: mercaptoethanol, ATSC: the acetone nitrogen base thiocarbamide that contracts
Embodiment
As Fig. 1, initiator in the reagent and additive in polymerization is an azo one two-2,4-methyl pentane nitrile (LB) and two-2-ethylhexyl peroxidation carbonic ether (LE), rinse solvent is toluene (TU), chain-transfer agent is mercaptoethanol (NG2), the PH conditioning agent is sodium hydroxide (BD), and terminator is the acetone nitrogen base thiocarbamide (ATSC) that contracts.
The pipeline of chain-transfer agent, PH conditioning agent, terminator and the inlet of common-use tunnel are a little less than the inlet of initiator, rinse solvent and common-use tunnel.The length of this common-use tunnel is 400 millimeters, and the pipeline of chain-transfer agent, PH conditioning agent, terminator and the inlet of common-use tunnel are lower than 100 millimeters of the inlets of initiator, rinse solvent and common-use tunnel.After the last inlet of a public pipeline of reagent and additive in polymerization entered polymeric kettle, the another one inlet blank off of former polymeric kettle formed airtight sealing.
According to the original production technique of suspension type polyvinyl-chloride, when polyaddition auxiliary agent in polymeric kettle 1,, add LE, LB earlier by its original order of addition(of ingredients), with the TU flushing, add NG2 then then, add BD again, add ATSC at last.
Claims (6)
1, the adding method of polymerization used additives in the Production of PVC is characterized in that each reagent and additive in polymerization enters polymeric kettle according to the last public pipeline of each addition sequence.
2, method according to claim 1 is characterized in that the addition sequence of each reagent and additive in polymerization is: initiator, rinse solvent, chain-transfer agent, PH conditioning agent, terminator.
3, method according to claim 1 is characterized in that the addition sequence of each reagent and additive in polymerization is: initiator, rinse solvent, PH conditioning agent, terminator.
4, according to claim 2 or 3 described methods, it is characterized in that initiator, rinse solvent enter common-use tunnel by a pipeline, chain-transfer agent, PH conditioning agent, terminator enter common-use tunnel by a pipeline.
5, method according to claim 4 is characterized in that the inlet of the pipeline of chain-transfer agent, PH conditioning agent, terminator and common-use tunnel is lower than the inlet of initiator, rinse solvent and common-use tunnel.
6, according to claim 1,2 or 3 described methods, it is characterized in that the initiator in the reagent and additive in polymerization is an azo-two-2,4-methyl pentane nitrile and two-2-ethylhexyl peroxidation carbonic ether, rinse solvent is a toluene, chain-transfer agent is a mercaptoethanol, the PH conditioning agent is a sodium hydroxide, and terminator is the acetone nitrogen base thiocarbamide that contracts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011351756A CN1162455C (en) | 2001-11-12 | 2001-11-12 | Method for adding assistant used in polymerization of polyvinyl chloride production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011351756A CN1162455C (en) | 2001-11-12 | 2001-11-12 | Method for adding assistant used in polymerization of polyvinyl chloride production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1418896A true CN1418896A (en) | 2003-05-21 |
| CN1162455C CN1162455C (en) | 2004-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011351756A Expired - Fee Related CN1162455C (en) | 2001-11-12 | 2001-11-12 | Method for adding assistant used in polymerization of polyvinyl chloride production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1162455C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665546B (en) * | 2009-09-25 | 2011-06-15 | 四川金路集团股份有限公司 | Feeding device for manufacturing PVC resin by using 70m<3> polymerization kettle and feeding method |
| CN104028173A (en) * | 2014-05-28 | 2014-09-10 | 新疆中泰化学股份有限公司 | Polymerizer feeding device and using method thereof |
| CN110917999A (en) * | 2019-12-10 | 2020-03-27 | 昊华宇航化工有限责任公司 | Polymerization feeding optimization system and method |
-
2001
- 2001-11-12 CN CNB011351756A patent/CN1162455C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665546B (en) * | 2009-09-25 | 2011-06-15 | 四川金路集团股份有限公司 | Feeding device for manufacturing PVC resin by using 70m<3> polymerization kettle and feeding method |
| CN104028173A (en) * | 2014-05-28 | 2014-09-10 | 新疆中泰化学股份有限公司 | Polymerizer feeding device and using method thereof |
| CN104028173B (en) * | 2014-05-28 | 2016-06-29 | 新疆中泰化学股份有限公司 | Polymeric kettle feeding device and using method thereof |
| CN110917999A (en) * | 2019-12-10 | 2020-03-27 | 昊华宇航化工有限责任公司 | Polymerization feeding optimization system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1162455C (en) | 2004-08-18 |
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