CN103275252B - Method for purification treatment on styrene polymerization recovered liquid - Google Patents
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Abstract
The invention relates to a method for purification treatment on a styrene polymerization recovered liquid. The method is characterized in that through an adsorbent which is bentonite, kaolin, or one and/or more of activated clay, alumina, activated aluminum oxide, activated carbon, a molecular sieve and aluminum silicate obtained by activating treatment on bentonite and kaolin and having different particle sizes, styrene polymerization recovered liquid is purified by a layered adsorption filtration method. The method has a short process, adopts simple equipment, can be operated and controlled easily, and has good treatment effects, an impurity removal rate more than 80% and an acid value less than 0.1 after purification. The styrene polymerization recovered liquid purified by the method can be used as a solvent or a raw material and can be directly returned back to styrene polymerization or other vinyl monomer copolymerization devices.
Description
technical field
The present invention relates to the purifying treatment method that styrene polymerization reclaims liquid, particularly containing the styrene polymerization of the impurity that in the monomer of the not polymerization reaction take place of separating and solvent, production equipment, equipment container produces, reclaim the purifying treatment method of liquid from polymkeric substance.
background technology
Known styrene monomer polymerization or will adopt letex polymerization, suspension polymerization, solution polymerization with monomer that other activity can polymerization reaction take place during as vinyl monomer copolymerization or add the bulk polymerization of a small amount of solvent.Because vinylbenzene or other vinyl monomers itself are added with stopper, reaction process is also added with emulsifying agent, initiator, chain-transfer agent, the reagent and additive in polymerization such as acrylic acid and propynoic acid ester and antioxidant, interior profit agent, photostabilizer, dyestuff, releasing agents etc. improve the additive of product performance, the polymkeric substance of the monomer that therefore reaction product can polymerization reaction take place except vinylbenzene or vinylbenzene and other activity, a small amount of oligopolymer and above-mentioned reagent and additive in polymerization and additive side reaction product have also been produced, the unreacted monomer of these side reaction products and part and solvent are separated the non-reacted band colored foreign itself bringing together with equipment container in production equipment from polymkeric substance just becomes styrene polymerization recovery liquid.
The side reaction product reclaiming in liquid due to styrene polymerization comprises styrene oligomer and acidity and non-acidic impurities, for example if phenols side reaction product is can affect transparency, the color of the finished product with color base group, particularly more obvious on the impact of transparent polystyrene, also easily make the finished product course of processing turned to be yellow by thermooxidizing simultaneously; These oligopolymer and acidity or non-acidic impurities or strong radical scavenger in addition, thereby suppressed the polymerization of the monomer that vinylbenzene and other activity can polymerization reaction take place, to speed of reaction and molecular weight, all can there is adverse influence, and appearance color, transparency and the mechanical property of product are reduced.Above-mentioned this impact increases with the increase of impurity.Therefore these polymerizations recovery liquid are directly got back to the participation polymerization of styrene polymerization device or have a strong impact on quality product with other vinyl monomer copolymerization meetings, can not directly use as reclaiming solvent.Patent CN 1253937 A disclose a kind of purification process of styrene monomer, mention with at least one material in aluminum oxide, activated alumina, silica gel, gac, calcium oxide and/or pure aluminium silicate and remove the phenolic compound in styrene monomer, its technical scheme is also just removed phenylacetylene and the phenolic inhibitor in styrene monomer, but all do not relate to the removal of reclaiming the impurity that the oligopolymer of liquid and side reaction impurity and production equipment equipment container self bring in polystyrene resin production process after styrene polymerization, and the cinnamic rate of recovery is not high.EP 410361 and EP 0662465 propose by the purifying to styrene monomer, and remove phenylacetylene.CN 101121634 A disclose cinnamic recovery method in a kind of pyrolysis gasoline, mentioning conventional separation obtains raw material thing before styrene product and selects at least one in gac, atlapulgite or molecular sieve to decolour as sorbent material, thereby the colourity of pyrolysis gasoline raw material is reduced, use precious metals palladium catalyst to carry out cinnamic recovery decolouring simultaneously.In addition, lot of documents as the disclosed technical schemes such as patent CN 102649660 A, CN 101475437 A, CN 1852877 A, CN 1087892 A be the method for removing phenylacetylene in vinylbenzene, its principle is to impel phenylacetylene to be transformed into vinylbenzene by the method for shortening, and its crucial processing step is often the selection of catalyzer and the control of processing method.
Application number is that 89101122.6 patent discloses a kind of method that cracking reduction polystyrene reclaims styrene monomer, its concrete technical scheme is to adopt metal oxide catalyst, in cracking still bottom, place alloy additive, high temperature carries out scission reaction, accompany by underpressure distillation simultaneously and reclaim styrene monomer, but its rate of recovery is 70 ~ 75%.Application number is the purification process that 91109195.5 patent discloses a kind of vi-ny l aromatic monomers, its concrete technical scheme be by monomer by the fixed bed of aluminium oxide particles, and the space velocity that limits monomer is 0.5-7.5h
-1and linear velocity is that 0.125-45m/h is to remove phenolic inhibitor.Application number is that to disclose a kind of be cinnamic catalyzer with waste polystyrene plastic catalyzed degradation for 95103865.6 patent, its concrete technical scheme is that the Y zeolite of the special modification of employing is main component, be equipped with promotor and tackiness agent etc. under special conditions and highly active aluminium hydroxide carries out modification and processes, the special compound forming at catalyst surface makes the catalyzed degradation of polystyrene be able to carry out at the temperature of normal pressure and reduction, but the cinnamic rate of recovery is only 60% left and right.
Summary of the invention
For effective elimination styrene polymerization reclaims the impurity that the side reaction impurity such as oligopolymer and acid and nonacid material in liquid and production equipment equipment container self bring, the invention provides the purifying treatment method that a kind of styrene polymerization reclaims liquid.Its technical scheme is as follows:
To be selected from wilkinite, the atlapulgite that kaolin or above-mentioned substance activation treatment become, aluminum oxide, activated alumina, gac, molecular sieve, at least one material in pure aluminium silicate and/or the material of multiple different-grain diameter are as sorbent material, mix by a certain percentage and carry out layered adsorption filtration with styrene polymerization recovery liquid, thereby purifying treatment is removed the side reaction product of styrene polymerization in recovery liquid as oligopolymer, the meetings such as acidity and non-acidic impurities and production equipment equipment container itself bring affect the impurity of styrene polymerization and end product quality, obtain comparatively pure styrene polymerization and reclaim liquid.
The above-mentioned handled styrene polymerization of the present invention reclaims liquid and generally comprises following composition: styrene monomer 60 ~ 95% weight parts, and the monomer that other activity can polymerization reaction take place is as vinyl monomer 0 ~ 40% weight part; Benzene class is as benzene, toluene, ethylbenzene, m-xylene, p-Xylol, o-Xylol, isopropyl benzene, n-proplbenzene and non-aromatics compound 3 ~ 30% weight parts; Oligopolymer is as vinylbenzene or other vinyl monomer polymer 1 ~ 15% weight parts; Acid and non-acidic impurities comprises that emulsifying agent, initiator, chain-transfer agent and additive comprise the impurity of the weight parts 0.1 ~ 5% such as antioxidant, interior profit agent, photostabilizer, dyestuff side reaction product and micro-production equipment equipment container generation itself as styrene oxidation product phenylformic acid and reagent and additive in polymerization.Be styrene polymerization or reach after as vinyl monomer copolymerization after 50 ~ 85% transformation efficiency with above-mentioned various impurity with monomer that other activity can polymerization reaction take place, and from polymkeric substance, separate and become styrene polymerization and reclaim liquid.
The envelope-bulk to weight ratio that the present invention reclaims liquid and sorbent material to above-mentioned styrene polymerization has carried out preferably, preferably, in described layered adsorption filtration procedure, the envelope-bulk to weight ratio of styrene polymerization recovery liquid and sorbent material is 20 ~ 1000:1, more preferably, lower than 600:1, most preferably, lower than 300:1.
The present invention has carried out preferably the different-grain diameter of above-mentioned sorbent material, preferably, the particle diameter of described sorbent material be 0.1mm to 5.0mm, more preferably, 0.5mm is to 3mm.
The present invention filters and has carried out preferably above-mentioned layered adsorption, preferably, upper and lower two-layer be large particle diameter adsorbent layer, middle layer is respectively the small particle size adsorbent layer of different sorbent materials.
The present invention can adopt the technical process of batch process method to realize, it is specially: in multistage returnable, by the amount of styrene polymerization recovery liquid, add respectively a certain proportion of above-mentioned sorbent material, styrene polymerization reclaims liquid stirring or concussion stop certain hour in returnable at different levels in order, by vacuum filtration, obtain successively the returnable that different sorbent material purifying treatment liquid joins next stage again, the liquid after last step returnable is processed becomes final styrene polymerization and reclaims liquid.
The present invention has carried out preferably above-mentioned multistage returnable, and preferably, described multistage returnable is 4 grades.
The envelope-bulk to weight ratio that the present invention reclaims liquid and sorbent material to above-mentioned batch process method styrene polymerization has carried out preferably, preferably, in described returnable at different levels, the envelope-bulk to weight ratio of styrene polymerization recovery liquid and sorbent material is 20 ~ 1000:1, more preferably, lower than 600:1, most preferably, lower than 300:1.
The present invention can adopt the technical process of continuous online treatment method to realize, it is specially: styrene polymerization is reclaimed to liquid under certain pressure and temperature and pass through continuously a king-post by certain space velocity and linear velocity, this king-post layering is filled with above-mentioned sorbent material successively, and the styrene polymerization being purified after processing reclaims liquid.
The present invention has carried out preferably the space velocity of above-mentioned continuous online treatment method, and preferably, described space velocity is lower than 5 h
-1, more preferably, lower than space velocity 3 h
-1.
The present invention has carried out preferably the linear velocity of above-mentioned continuous online treatment method, and preferably, described linear velocity is lower than 15 m/hr, more preferably, and lower than 8 m/hr linear velocities.
Adopt technique of the present invention to reclaim liquid to styrene polymerization and carry out purifying treatment, can select preferably styrene polymerization to reclaim the contained vinylbenzene of liquid or the oligopolymer of other vinyl monomers and this index of removal of impurity of polymerization side reactions product and evaluate, the acid number that also can measure purifying treatment front and back simultaneously changes to carry out comprehensive evaluation.
The mensuration of this removal of impurity can be used vapor-phase chromatography to measure respectively the content that styrene polymerization reclaims liquid purifying treatment front and back vinylbenzene or other vinyl monomers and benzene-like compounds, as follows:
÷ A * 100% of foreign matter content=(A-B-C)
A: styrene polymerization reclaims liquid gross weight deal (by 100 weight parts)
B: styrene polymerization reclaims vinylbenzene weight part (by 100 weight parts) in liquid
C: the weight part of other vinyl monomers and benzene-like compounds (by 100 weight parts)
Removal of impurity %=processes foreign matter content * 100% before rear impurity content ÷ processes
The present invention compared with prior art has advantages of following outstanding:
By implementing technique scheme, the present invention can effectively remove styrene polymerization and reclaim the impurity that the oligopolymer of the contained vinylbenzene of liquid or other vinyl monomers and polymerization side reactions product and production equipment equipment itself bring, adopt above-mentioned technique can make styrene polymerization reclaim the removal of impurity such as the oligopolymer of contained vinylbenzene in liquid or other vinyl monomers and polymerization side reactions product and reach more than 80%, be up to 95%; After purifying treatment, acid number is lower than 0.1, minimumly can reach 0.030.Meanwhile, technical process of the present invention is short, technological process is simple and quick, equipment is simple and energy-conservation, can realize on-line automatic red-tape operati, purifying treatment is respond well.The styrene polymerization recovery liquid of crossing through purifying treatment of the present invention can be used as solvent or raw material is directly got back to styrene polymerization or uses with the copolymerization device of other vinyl monomers.
Embodiment
By specific embodiment, the present invention is further described below, but the invention is not restricted to following examples.
In specific embodiment and comparative example, not doing the sorbent material particle diameter illustrating is below 1.5mm.
embodiment 1, styrene polymerization reclaim the purifying treatment method of liquid
Styrene polymerization reclaims liquid (styrene content 81%, benzene-like compounds content 12%, the impurity equal size 7% that oligopolymer and acidity and non-acidic impurities and production equipment equipment container self bring, acid number is 0.137) first to add 25g particle diameter in 500mL be the activated alumina of 2mm, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, at the styrene polymerization of separating, reclaim in liquid and add the concussion of 25g atlapulgite process and separate as stated above again, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 93% is reclaimed in the polymerization being purified after processing, acid number after purifying treatment is changed to 0.052.
embodiment 2, styrene polymerization reclaim the purifying treatment method of liquid
In styrene polymerization recovery liquid 5000mL in embodiment 1, first adding 25g particle diameter is the activated alumina of 2mm, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, at the styrene polymerization of separating, reclaim in liquid and add the concussion of 25g atlapulgite process and separate as stated above again, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 95% is reclaimed in the polymerization being purified after processing, and the acid number after purifying treatment is changed to 0.032.
embodiment 3, styrene polymerization reclaim the purifying treatment method of liquid
In styrene polymerization recovery liquid 7000mL in embodiment 1, first adding 25g particle diameter is the activated alumina of 2mm, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, at the styrene polymerization of separating, reclaim in liquid and add the concussion of 25g atlapulgite process and separate as stated above again, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 94% is reclaimed in the polymerization being purified after processing, and the acid number after purifying treatment is changed to 0.050.
embodiment 4, styrene polymerization reclaim the purifying treatment method of liquid
In styrene polymerization recovery liquid 15000mL in embodiment 1, first adding 25g particle diameter is the activated alumina of 2mm, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, at the styrene polymerization of separating, reclaim in liquid and add the concussion of 25g atlapulgite process and separate as stated above again, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 95% is reclaimed in the polymerization being purified after processing, and the acid number after purifying treatment is changed to 0.050.
embodiment 5, styrene polymerization reclaim the purifying treatment method of liquid
Styrene polymerization in embodiment 1 reclaims in liquid 5000ml and first adds 5g activated alumina, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, at the styrene polymerization of separating, reclaim liquid as stated above again and add the concussion of 5g atlapulgite process and separate, liquid removal of impurity 89% is reclaimed in the polymerization that adopts gas chromatograph for determination to be purified after processing through the solution filtering.Acid number after purifying treatment is 0.063.
embodiment 6, styrene polymerization reclaim the purifying treatment method of liquid
In styrene polymerization recovery liquid 5000mL in embodiment 1, first adding 25g particle diameter is the activated alumina of 2mm, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, at the styrene polymerization of separating, reclaim in liquid and add the concussion of 25g activated alumina process and separate as stated above again, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 80% is reclaimed in the polymerization being purified after processing, and the acid number after purifying treatment is changed to 0.032.
embodiment 7, styrene polymerization reclaim the purifying treatment method of liquid
Styrene polymerization in embodiment 1 reclaims in liquid 5000mL, first adding 10g particle diameter is that 1mm, 10g particle diameter are the activated alumina that 2mm, 5g particle diameter are 3mm, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, at the styrene polymerization of separating, reclaim in liquid and add the concussion of 25g atlapulgite process and separate as stated above again, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 95% is reclaimed in the polymerization being purified after processing, and the acid number after purifying treatment is 0.030.
embodiment 8, styrene polymerization reclaim the purifying treatment method of liquid
Styrene polymerization in embodiment 1 reclaims in liquid 5000mL and first adds 10g activated alumina, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, at the styrene polymerization of separating, reclaim in liquid and add the concussion of 10g wilkinite process and separate as stated above again, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 90% is reclaimed in the polymerization being purified after processing, and the acid number after purifying treatment is 0.083.
embodiment 9, styrene polymerization reclaim the purifying treatment method of liquid
Styrene polymerization in embodiment 1 reclaims the wilkinite that first adds 25g in liquid 5000mL, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with wilkinite, at the styrene polymerization of separating, reclaim in liquid and add the concussion of 25g molecular sieve process and separate as stated above again, through the solution filtering, adopt gas chromatograph for determination, be purified the recovery liquid removal of impurity 81% after processing, the acid number after purifying treatment is 0.092.
embodiment 10, styrene polymerization reclaim the purifying treatment method of liquid
Styrene polymerization in embodiment 1 reclaims in liquid 5000mL and first adds 25g kaolin, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with kaolin, at the styrene polymerization of separating, reclaim liquid as stated above again and add the concussion of 25g gac process and separate, liquid removal of impurity 82% is reclaimed in the polymerization that adopts gas chromatograph for determination to be purified after processing through the solution filtering.Acid number after purifying treatment is 0.098.
embodiment 11, styrene polymerization reclaim the purifying treatment method of liquid
Styrene polymerization in embodiment 1 reclaims in liquid 5000mL and first adds the high territory of 25g, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with kaolin, at the styrene polymerization of separating, reclaim in liquid and add the concussion of 25g pure aluminium silicate process and separate as stated above again, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 80% is reclaimed in the polymerization being purified after processing, and the acid number after purifying treatment is 0.096.
embodiment 12, styrene polymerization reclaim the purifying treatment method of liquid
In styrene polymerization recovery liquid 5000mL in embodiment 1, first adding 15g particle diameter is the activated alumina of 5mm, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, in the styrene polymerization recovery liquid of separating, adding 5g particle diameter as stated above is again the activated carbon of 0.5mm, 5g particle diameter is the aluminum oxide of 0.5mm, 5g particle diameter is that the kaolin concussion of 0.5mm is processed and separates, at the styrene polymerization separated, reclaim as stated above again that in liquid, to add 15g particle diameter be that the atlapulgite concussion of 5mm is processed and separates, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 93% is reclaimed in the polymerization being purified after processing, acid number after purifying treatment is 0.055.
embodiment 13, styrene polymerization reclaim purifying treatment method---the batch process method of liquid
Select 3 grades of returnable, 1, 2, in 3 grades of returnable, add successively 5g kaolin, 5 gacs, 5 activated aluminas, the styrene polymerization recovery liquid of 5000mL embodiment 1 in returnable at different levels, stirs in order or concussion stops 1 hour, by vacuum filtration, obtain obtaining successively the returnable that different sorbent material purifying treatment liquid joins next stage again, liquid after last step returnable is processed becomes final purifying treatment styrene polymerization and reclaims liquid, the solution filtering through the method adopts gas chromatograph for determination, liquid removal of impurity 83% is reclaimed in the polymerization being purified after processing, acid number after purifying treatment is 0.085.
embodiment 14, styrene polymerization reclaim purifying treatment method---the batch process method of liquid
Select 4 grades of returnable, 1, 2, 3, in 4 grades of returnable, add successively 10g wilkinite, 10g atlapulgite, 10 molecular sieves, 10 pure aluminium silicate, the styrene polymerization recovery liquid of 5000mL embodiment 1 in returnable at different levels, stirs in order or concussion stops 1 hour, by vacuum filtration, obtain obtaining successively the returnable that different sorbent material purifying treatment liquid joins next stage again, liquid after last step returnable is processed becomes final purifying treatment styrene polymerization and reclaims liquid, the solution filtering through the method adopts gas chromatograph for determination, liquid removal of impurity 91% is reclaimed in the polymerization being purified after processing, acid number after purifying treatment is 0.075.
embodiment 15, styrene polymerization reclaim the purifying treatment method of liquid---continuous online treatment method
There is the circular king-post of 2 interlayers an inside, top interlayer is equipped with 20g activated alumina, bottom interlayer is equipped with 20g wilkinite, at certain pressure (0.1MPa) and temperature (25 ℃), the styrene polymerization in embodiment 1 is reclaimed to liquid 5000mL with linear velocity and 1.0 h of 0.2 m/hr
-1space velocity is by this king-post, and the solution after filtering adopts gas chromatograph for determination, and the polymerization recovery liquid removal of impurity being purified after processing is 93%, and the acid number after purifying treatment is 0.054.
embodiment 16, styrene polymerization reclaim the purifying treatment method of liquid---continuous online treatment method
Under the identical condition with embodiment 15, the styrene polymerization that different is in embodiment 1 reclaims liquid 5000mL with linear velocity and the 3h of 8m/hr
-1space velocity is by this king-post, and the solution after filtering adopts gas chromatograph for determination, and the polymerization recovery liquid removal of impurity being purified after processing is 87%, and the acid number after purifying treatment is 0.067.
comparative example 1, styrene polymerization reclaim the purifying treatment method of liquid
Styrene polymerization in embodiment 1 reclaims in liquid 500mL and first adds 50g activated alumina, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with activated alumina, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 63% is reclaimed in the polymerization being purified after processing, and the acid number after purifying treatment is 0.089.
comparative example 2, styrene polymerization reclaim the purifying treatment method of liquid
Styrene polymerization in embodiment 1 reclaims in liquid 5000mL and first adds the kaolin without activation treatment 50g, on earthquake machine, rock 1 hour, then with vacuum filtration, styrene polymerization is reclaimed to liquid separated with kaolin, through the solution filtering, adopt gas chromatograph for determination, liquid removal of impurity 40% is reclaimed in the polymerization being purified after processing, and the acid number after purifying treatment is 0.127.
comparative example 3, styrene polymerization reclaim purifying treatment method---the batch process method of liquid
Select 4 grades of returnable, 1, 2, 3, in 4 grades of returnable, add successively 5g wilkinite, 5g atlapulgite, 5 molecular sieves, 5 pure aluminium silicate, the styrene polymerization recovery liquid of 25000mL embodiment 1 in returnable at different levels, stirs in order or concussion stops 1 hour, by vacuum filtration, obtain obtaining successively the returnable that different sorbent material purifying treatment liquid joins next stage again, liquid after last step returnable is processed becomes final purifying treatment styrene polymerization and reclaims liquid, the solution filtering through the method adopts gas chromatograph for determination, liquid removal of impurity 85% is reclaimed in the polymerization being purified after processing, acid number after purifying treatment is 0.121.
comparative example 4, styrene polymerization reclaim the purifying treatment method of liquid---continuous online treatment method
Under the identical condition with embodiment 15, different is that styrene polymerization reclaims liquid 5000mL with linear velocity and 10 h of 4 m/hr
-1space velocity is by this king-post, and the solution filtering after filtering adopts gas chromatograph for determination, and the polymerization recovery liquid removal of impurity being purified after processing is 40%, and the acid number after purifying treatment is 0.103.
Each embodiment different substances of table 1., particle diameter, weight ratio, batch process method and continuous online treatment method and comparative example table look-up
Each embodiment different substances of table 1., particle diameter, weight ratio, batch process method and continuous online treatment method and comparative example table look-up (Continued)
Claims (7)
1. a styrene polymerization reclaims the purifying treatment method of liquid, it is characterized in that, styrene polymerization is reclaimed to liquid to be mixed by the envelope-bulk to weight ratio of 20～1000:1 with sorbent material, adopt the method that layered adsorption filters to process styrene polymerization recovery liquid, wherein, described sorbent material is at least two kinds of materials in wilkinite, kaolin, atlapulgite, activated alumina, gac, molecular sieve and pure aluminium silicate, and the particle diameter of described sorbent material is that 0.1mm is to 5.0mm.
2. styrene polymerization according to claim 1 reclaims the purifying treatment method of liquid, it is characterized in that described sorbent material is atlapulgite and activated alumina.
3. styrene polymerization according to claim 1 reclaims the purifying treatment method of liquid, it is characterized in that the method that described layered adsorption filters, and comprises batch process method and/or continuous on-line processing method.
4. styrene polymerization according to claim 3 reclaims the purifying treatment method of liquid, it is characterized in that described batch process method: the volume that reclaims liquid in styrene polymerization in multistage returnable adds respectively the sorbent material of ratio described in claim 1, styrene polymerization reclaims liquid stirring or concussion stop certain hour in returnable at different levels in order, by vacuum filtration, obtain successively the returnable that different sorbent material purifying treatment liquid joins next stage again, the liquid after last step returnable is processed becomes final styrene polymerization and reclaims liquid.
5. styrene polymerization according to claim 4 reclaims the purifying treatment method of liquid, it is characterized in that the envelope-bulk to weight ratio that styrene polymerization in described returnable at different levels reclaims liquid and sorbent material is 20～1000:1.
6. styrene polymerization according to claim 3 reclaims the purifying treatment method of liquid, it is characterized in that described continuous on-line processing method is: under certain pressure and temperature, styrene polymerization is reclaimed liquid after filtering by space velocity lower than 5h
-1lower than 15m/hr, by a king-post, sorbent material claimed in claim 1 is loaded in this king-post layering successively continuously with linear velocity, and the styrene polymerization being purified after processing reclaims liquid.
7. styrene polymerization according to claim 6 reclaims the purifying treatment method of liquid, it is characterized in that described space velocity is lower than 3h
-1, described linear velocity is lower than 8m/hr.
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| CN1105287A (en) * | 1993-09-10 | 1995-07-19 | 埃勒夫阿托化学有限公司 | Process for cleaning and regeneration of molecular sieves employed for the treatment of styrene |
| CN1253937A (en) * | 1998-11-18 | 2000-05-24 | 中国石油化工集团公司 | Purification method of phenylethylene monomer |
| CN101746920A (en) * | 2008-12-02 | 2010-06-23 | 东丽纤维研究所（中国）有限公司 | Process for recycling and processing expandable polystyrene wastewater |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1105287A (en) * | 1993-09-10 | 1995-07-19 | 埃勒夫阿托化学有限公司 | Process for cleaning and regeneration of molecular sieves employed for the treatment of styrene |
| CN1253937A (en) * | 1998-11-18 | 2000-05-24 | 中国石油化工集团公司 | Purification method of phenylethylene monomer |
| CN101746920A (en) * | 2008-12-02 | 2010-06-23 | 东丽纤维研究所（中国）有限公司 | Process for recycling and processing expandable polystyrene wastewater |
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