CN108084365A - The preparation method and its preparation facilities of a kind of super absorbent resin - Google Patents
The preparation method and its preparation facilities of a kind of super absorbent resin Download PDFInfo
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- CN108084365A CN108084365A CN201810003975.8A CN201810003975A CN108084365A CN 108084365 A CN108084365 A CN 108084365A CN 201810003975 A CN201810003975 A CN 201810003975A CN 108084365 A CN108084365 A CN 108084365A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/01—Processes of polymerisation characterised by special features of the polymerisation apparatus used
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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Abstract
The invention discloses the preparation method and its preparation facilities of a kind of super absorbent resin, 1）By the monomeric acrylic of certain degree of neutralization（Sodium）Saline solution is premixed with crosslinking agent, initiator, oxygen scavenger；2）Pre-composition is sent and is polymerize into reaction zone, generates gel；Monitoring gelling temp in real time；3）The later stage is reacted, gelling temp carries out water spray when between 80~100 DEG C；4）Jel product is dry, crushes, sieves, surface treatment.Preparation facilities includes reaction zone and the seal closure above reaction zone, and seal closure and reaction zone are arranged in insulation cover, catch basin are equipped with below reaction zone, catch basin is connected with wastewater storage tank, and wastewater storage tank is connected respectively with feed inlet and shower water；At least one infrared temperature probe and at least one spray head are equipped in seal closure.By being formed in situ CO2And inert gas is passed through, reduce the oxygen concentration in solution and device；Gelling temp is reduced by water spray, side reaction is reduced, enhances product performance.
Description
Technical field
The present invention relates to the preparation methods and its preparation facilities of a kind of super absorbent resin, exist more specifically to one kind
The oxygen content of system and reaction gel temperature are reduced in high hydroscopic resin manufacturing process, the water absorbing properties of product is improved and returns
Ooze performance methodology and corresponding device.
Background technology
Super absorbent resin can absorb the water of hundred times or even thousand times of own wt, therefore be widely used in sanitary material
In material, such as diaper for babies, sanltary towel, adult-incontinence material etc..Super absorbent resin can also apply to agriculture simultaneously
Industry, gardening, electric wire, cable etc..
Super absorbent resin is via polymerization process, drying process, pulverizing process, screening process, surface cross-linking process step etc.
Each process and manufacture.In addition, with the high performance of the paper nappy as main application, slimming, it is necessary to improve high suction
It the water absorbing properties of water-base resin and is made after paper diaper and bleeds back performance.
Under a certain amount of alkali neutralization, acrylic acid is made generally by acrylic acid in super absorbent resin（Salt）Aqueous solution,
Polymerization crosslinking reaction occurs under initiator, crosslinking agent and other promoter effects, forms the hydrogel with net structure.
Oxygen has inhibition for polymerisation, can increase the induction time of polymerisation, reduces reactivity, prolongs
The long reaction time.In order to reduce the inducing action of oxygen, generally by increasing initiator amount, the oxygen in system is consumed
Afterwards, polymerisation is just proceeded by.And increase initiator amount, polymerizable molecular amount can be caused to decline, so as to reduce super absorbent resin
The water absorbent rate of fat increases solubles content so that hydraulic performance decline is oozed in returning for super absorbent resin.
It further, since polymerisation thermal discharge is big, is formed after gel network, heat is difficult to withdraw, and can cause entirely solidifying
Glue temperature rises very rapidly up to 100 DEG C or more.Temperature is excessively high to cause the side reactions such as gel network molecular chain rupture or self-crosslinking
Appearance.Therefore, it polymerize withdrawing for late phase reaction heat to be of crucial importance for improving the performance of water-absorbing resin.
The polymerization of super absorbent resin can be divided into aqueous solution polymerization and inverse suspension polymerization according to technique difference.Reverse phase is hanged
Floating polymerization carries out polymerisation by the way that monomer solution is dispersed in the continuous phases such as alkane, and reaction process stirring is good, can be with
Preferably reaction heat is withdrawn, ensures good properties of product.But since anti-phase suspension technology controlling and process is complex, and make
With low boiling point solvent, technology difficulty is high, cost is big.
The content of the invention
In order to make up for the deficiencies of the prior art, reduced it is an object of the present invention to provide one kind in high hydroscopic resin manufacturing process
The oxygen content of system and reaction gel temperature improve the water absorbing properties of product and return the method for oozing performance and corresponding dress
It puts.
The technical proposal for solving the technical problem of the invention is：A kind of preparation method of super absorbent resin, it is described
Preparation method mainly include the following steps that：1）By the monomeric acrylic of certain degree of neutralization（Sodium）Saline solution is carried out with crosslinking agent
Premix forms reactive admixture；2）By reaction mass, including above-mentioned pre-composition, initiator, oxygen scavenger with certain flow send to
Polymerisation is carried out in reaction zone, generates gel；During polymerisation, gelling temp is monitored in real time；3）Polymerization reaction late stage, when
The gelling temp monitored carries out pure water spray process when between 80~100 DEG C, to the gel of the temperature section on reaction zone；4）
Obtained jel product is dried, crush, sieve, is surface-treated, super absorbent resin product can be obtained；
In above-mentioned preparation method, reaction zone is in sealing system, and reaction mass enters before reaction zone, first in sealing system
Inert gas is passed through, displaces the air in system；In above-mentioned preparation method, the dosage of initiator for monomer mass 0.5~
5 ‰, the dosage of crosslinking agent is 0.5~3 ‰.
Further, the oxygen scavenger is one or both of sodium carbonate, sodium acid carbonate, potassium carbonate, saleratus
Above mixing；The dosage of the oxygen scavenger is the 0.1~1% of monomer mass.Oxygen scavenger is with that after acrylic acid reaction, can react
In-situ preparation inert gas carbon dioxide in solution is volatilized by the carbon dioxide formed in the solution, by the dissolving in monomer
Dissolved oxygen in oxygen or solution comprising monomer is replaced away so that dissolved oxygen concentration in reactive admixture less than 1mg/L, into
Row polymerization.
Further, the inert gas is nitrogen, argon gas or carbon dioxide, is preferably nitrogen.Although these polymerize
Also can implement in air atmosphere, but preferably in inert gas atmospheres such as nitrogen, argon gas from the viewpoint of enhancing product performance
Under（Such as below 1 volume % of oxygen concentration）Middle implementation.Furthermore it is possible to decompression, normal pressure, pressurization any pressure under implement.
Further, the inlet amount of the reaction mass is 2~15mm for the height on reaction zone, preferably 5~
10mm。
Further, the reaction mass is first preheated before reaction zone is entered, and feeding temperature is 30~80 DEG C.
Further, the acrylic acid containing 0.1~2 mass % in the waste water after spray process（Sodium）, recovering and reutilizing waste water work
Reaction raw materials monomer or shower water.
A kind of preparation facilities of super absorbent resin, the preparation facilities mainly include the reaction zone of continuous rotation and are arranged on
Seal closure above reaction zone, the both sides of the edge of the reaction zone are bonded with the seal closure so that seal closure is covered anti-
It should be in closed environment；The seal closure and reaction zone are arranged in insulation cover, and the insulation cover is equipped with feed inlet, gas
Body import, gas vent and discharge port；The gas feed and gas vent are communicated by pipeline with seal closure；The reaction
The lower section of band is equipped with to collect the catch basin of spent shower water, and the catch basin is connected by pipeline with wastewater storage tank, described useless
Water storage tank is connected by pipeline with feed inlet and shower water respectively；At least one infrared measurement of temperature is equipped in the seal closure to visit
Head and at least one spray head, the spray head are connected with shower water.
Further, adjusting rod is equipped with below the both sides of the edge of the reaction zone, the adjusting rod can up and down adjustment reaction
The both sides of the edge of band make to form angle α between the both sides of the edge and reaction zone main body, the scope of the angle α for 90~
180 degree.
Further, between the end of the reaction zone and seal closure there are gap, the altitude range in the gap for 3~
16mm.The gap is charging gap, and reactive admixture is sent from feed inlet to conveyer belt, and it is 2 to form height on a moving belt
The admixture layer of~15mm, after conveyer belt rotates, admixture layer, which enters from charging gap in seal closure, to react；Feed gap with it is pre-
The matched of mixed nitride layer so that the state of opposing seal is in seal closure.
Further, the spray head is arranged at the 1/2~2/3 of seal closure rear portion；The rotation direction of the spray head
Adjustable, the angular range of adjusting is 30~150 degree.
The beneficial effects of the invention are as follows：By being formed in situ carbon dioxide in reaction solution and leading in the reaction system
Enter inert gas to carry out polymerisation, reduce the oxygen concentration in solution and preparation facilities, enhance product performance.By poly-
The later stage is closed to gel progress water spray, gelling temp is reduced, so as to reduce side reaction, improves the performance of product.
Description of the drawings
Fig. 1 is the structure diagram of preparation facilities provided by the invention.
Fig. 2 is the partial structural diagram of preparation facilities provided by the invention.
Wherein, 1- feed inlets, 2- gas feeds, 3- seal closures, 4- infrared temperature probes, 5- spray heads, the storage of 6- shower waters
Tank, 7- gas vents, 8- discharge ports, 9- catch basins, 10- wastewater storage tanks, 11- reaction zones, 12- insulation covers, 13- adjusting rods, 14-
Feed gap.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention.
Embodiment 1
1000kg acrylic acid, 600kg deionized waters are mixed, 32% sodium hydroxide solutions of 1300kg are added dropwise, are configured to neutralizer,
Neutralizer temperature is controlled less than 40 DEG C, 1.6kg crosslinking agents polyethyleneglycol diacrylate is added in and forms pre-composition.By pre-composition,
The oxidation of 10% aqueous sodium carbonates of 15kg and 10% ascorbic acid solutions of 10kg and 10% hydrogen peroxide solutions of 5kg composition-also
Former initiator is added to certain flow on reaction zone.When the gelling temp on reaction zone reaches 80 DEG C, gel is carried out
Water spray cools down.Gel is crushed, is dried, is crushed, sieve after obtain 150~810 μm of solid particle.
Above-mentioned solid particle is surface-treated using water, ethylene glycol, polyethyleneglycol diglycidylether, at 130 DEG C
Lower heating 30 minutes, obtains final products.
Embodiment 2
1000kg acrylic acid, 600kg deionized waters are mixed, 32% sodium hydroxide solutions of 1300kg are added dropwise, are configured to neutralizer,
Neutralizer temperature is controlled less than 40 DEG C, 1.6kg crosslinking agents polyethyleneglycol diacrylate is added in and forms pre-composition.By pre-composition,
The oxidation of 10% aqueous sodium carbonates of 35kg and 10% ascorbic acid solutions of 10kg and 10% hydrogen peroxide solutions of 5kg composition-also
Former initiator is added to certain flow on reaction zone.When the gelling temp on reaction zone reaches 80 DEG C, gel is carried out
Water spray cools down.Gel is crushed, is dried, is crushed, sieve after obtain 150~810 μm of solid particle.
Above-mentioned solid particle is surface-treated using water, ethylene glycol, polyethyleneglycol diglycidylether, at 130 DEG C
Lower heating 30 minutes, obtains final products.
Embodiment 3
1000kg acrylic acid, 600kg deionized waters are mixed, 32% sodium hydroxide solutions of 1300kg are added dropwise, are configured to neutralizer,
Neutralizer temperature is controlled less than 40 DEG C, 1.6kg crosslinking agents polyethyleneglycol diacrylate is added in and forms pre-composition.By pre-composition,
The oxidation of 10% sodium bicarbonate aqueous solutions of 80kg and 10% ascorbic acid solutions of 10kg and 10% hydrogen peroxide solutions of 5kg composition-
Reduction initiator is added to certain flow on reaction zone.When the gelling temp on reaction zone reaches 80 DEG C, to gel into
Row water spray cools down.Gel is crushed, is dried, is crushed, sieve after obtain 150~810 μm of solid particle.
Above-mentioned solid particle is surface-treated using water, ethylene glycol, polyethyleneglycol diglycidylether, at 130 DEG C
Lower heating 30 minutes, obtains final products.
Embodiment 4
1000kg acrylic acid, 600kg deionized waters are mixed, 32% sodium hydroxide solutions of 1300kg are added dropwise, are configured to neutralizer,
Neutralizer temperature 70 C is controlled, 1.8kg crosslinking agents polyethyleneglycol diacrylate is added in and forms pre-composition.By pre-composition, 80kg
10% sodium bicarbonate aqueous solution and 10% potassium persulfate solution initiators of 20kg are added to certain flow on reaction zone.When
When gelling temp on reaction zone reaches 90 DEG C, water spray cooling is carried out to gel.Gel is crushed, dried, crushed, is sieved
150~810 μm of solid particle is obtained after point.
Above-mentioned solid particle is surface-treated using water, propylene glycol, ethylene glycol diglycidylether, at 130 DEG C
Heating 30 minutes, obtains final products.
Comparative example 1
1000kg acrylic acid, 600kg deionized waters are mixed, 32% sodium hydroxide solutions of 1300kg are added dropwise, are configured to neutralizer,
Neutralizer temperature is controlled less than 40 DEG C, 1.6kg crosslinking agents polyethyleneglycol diacrylate is added in and forms pre-composition.By pre-composition with
And the oxidation-reduction initiator of 10% ascorbic acid solutions of 10kg and 10% hydrogen peroxide solutions of 5kg composition is added with certain flow
Enter onto reaction zone.When the gelling temp on reaction zone reaches 80 DEG C, water spray cooling is carried out to gel.Gel is broken
150~810 μm of solid particle is obtained after broken, dry, crushing, screening.
Above-mentioned solid particle is surface-treated using water, ethylene glycol, polyethyleneglycol diglycidylether, at 130 DEG C
Lower heating 30 minutes, obtains final products.
Comparative example 2
1000kg acrylic acid, 600kg deionized waters are mixed, 32% sodium hydroxide solutions of 1300kg are added dropwise, are configured to neutralizer,
Neutralizer temperature 70 C is controlled, 1.8kg crosslinking agents polyethyleneglycol diacrylate is added in and forms pre-composition.By pre-composition, 80kg
10% sodium bicarbonate aqueous solution and 10% potassium persulfate solution initiators of 20kg are added to certain flow on reaction zone.When
When gelling temp on reaction zone reaches 90 DEG C, water spray cooling is carried out to gel.Gel is crushed, dried, crushed, is sieved
150~810 μm of solid particle is obtained after point.
Above-mentioned solid particle is surface-treated using water, propylene glycol, ethylene glycol diglycidylether, at 130 DEG C
Heating 30 minutes, obtains final products.
Comparative example 3
1000kg acrylic acid, 600kg deionized waters are mixed, 32% sodium hydroxide solutions of 1300kg are added dropwise, are configured to neutralizer,
Neutralizer temperature is controlled less than 40 DEG C, 1.6kg crosslinking agents polyethyleneglycol diacrylate is added in and forms pre-composition.By pre-composition with
And the oxidation-reduction initiator of 10% ascorbic acid solutions of 10kg and 10% hydrogen peroxide solutions of 5kg composition is added with certain flow
Enter onto reaction zone.After the completion of reaction, the gel of generation is crushed, is dried, is crushed, sieve after obtain 150~810 μm
Solid particle.
Above-mentioned solid particle is surface-treated using water, ethylene glycol, polyethyleneglycol diglycidylether, at 130 DEG C
Lower heating 30 minutes, obtains final products.
The performance test results of resulting product in table 1, Examples 1 to 4 and comparative example 1~3
| Embodiment | Inhale pure water multiplying power（g/g） | Inhale 0.9% physiological saline multiplying power（g/g） | 0.3psi Smoking indexes（g/g） | It returns and oozes（g） |
| Embodiment 1 | 450 | 55 | 28 | 3.1 |
| Embodiment 2 | 465 | 58 | 28 | 2.8 |
| Embodiment 3 | 480 | 60 | 29 | 2.6 |
| Embodiment 4 | 480 | 59 | 30 | 2.5 |
| Comparative example 1 | 430 | 54 | 27 | 3.5 |
| Comparative example 2 | 420 | 53 | 27 | 3.5 |
| Comparative example 3 | 380 | 50 | 26 | 6 |
A kind of preparation facilities of super absorbent resin, the preparation facilities mainly include the reaction zone 11 of continuous rotation and arranged on anti-
Should the top of band 11 seal closure 3, the both sides of the edge of the reaction zone 11 are bonded with the seal closure 3 so that seal closure 3 is covered
Reaction zone 11 be in closed environment；The seal closure 3 and reaction zone 11 are arranged in insulation cover 12, on the insulation cover 12
Equipped with feed inlet 1, gas feed 2, gas vent 7 and discharge port 8；The gas feed 2 and gas vent 7 by pipeline with
Seal closure 3 communicates；The lower section of the reaction zone 11 is equipped with to collect the catch basin 9 of spent shower water, and the catch basin 9 passes through pipe
Road is connected with wastewater storage tank 10, and the wastewater storage tank 10 is connected by pipeline with feed inlet 1 and shower water 6 respectively；It is described
At least one infrared temperature probe 4 and at least one spray head 5, the spray head 5 and shower water 6 are equipped in seal closure 3
It is connected.
Adjusting rod 13 is equipped with below the both sides of the edge of the reaction zone 11, the adjusting rod 13 can up and down adjustment reaction zone 11
Both sides of the edge, make to form angle α between 11 main body of the both sides of the edge and reaction zone, the scope of the angle α for 90~
180 degree.There is charging gap 14, the altitude range in the charging gap 14 between the end of the reaction zone 11 and seal closure 3
For 3~16mm.The spray head 5 is arranged at the 1/2~2/3 of 3 rear portion of seal closure；The rotation direction of the spray head 5 is adjustable
Section, the angular range of adjusting is 30~150 degree.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical solution falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (10)
1. a kind of preparation method of super absorbent resin, which is characterized in that the preparation method mainly includes the following steps that：1）
By the monomeric acrylic of certain degree of neutralization（Sodium）Saline solution is premixed with crosslinking agent, forms reactive admixture；2）It will reaction
Material, including above-mentioned steps 1）In obtained pre-composition, initiator, oxygen scavenger sent with certain flow and gathered into reaction zone
Reaction is closed, generates gel；During polymerisation, gelling temp is monitored in real time；3）Polymerization reaction late stage, when the gel temperature monitored
Degree carries out pure water spray process when between 80~100 DEG C, to the gel of the temperature section on reaction zone；4）Obtained gel is produced
Object is dried, crushes, sieves, is surface-treated, and can obtain super absorbent resin product；
In above-mentioned preparation method, reaction zone is in sealing system, and reaction mass enters before reaction zone, first in sealing system
Inert gas is passed through, displaces the air in system；
In above-mentioned preparation method, the dosage of initiator is 0.5~the 5 ‰ of monomer mass, and the dosage of crosslinking agent is 0.5~3 ‰.
2. a kind of preparation method of super absorbent resin according to claim 1, it is characterised in that：The oxygen scavenger is
Mixing more than one or both of sodium carbonate, sodium acid carbonate, potassium carbonate, saleratus；The dosage of the oxygen scavenger is single
The 0.1~1% of weight；Oxygen scavenger can be added in the form of powder or aqueous solution in neutralizer.
3. a kind of preparation method of super absorbent resin according to claim 1, it is characterised in that：The inert gas
For nitrogen, argon gas or carbon dioxide.
4. a kind of preparation method of super absorbent resin according to claim 1, it is characterised in that：The reaction mass
Inlet amount for height on reaction zone be 2~15mm, be preferably 5~10mm.
5. a kind of preparation method of super absorbent resin according to claim 1, it is characterised in that：The reaction mass
It is first preheated before reaction zone is entered, feeding temperature is 30~80 DEG C.
6. a kind of preparation method of super absorbent resin according to claim 1, it is characterised in that：It is useless after spray process
Acrylic acid containing 0.1~2 mass % in water（Sodium）, the waste water is recyclable to be used as reaction raw materials monomer or shower water.
7. a kind of preparation facilities of super absorbent resin according to claim 1, it is characterised in that：The preparation facilities master
The reaction zone and the seal closure above reaction zone to include continuous rotation, the both sides of the edge of the reaction zone and the sealing
Cover fitting so that the reaction zone that seal closure is covered is in closed environment；The seal closure and reaction zone are arranged on insulation cover
Interior, the insulation cover is equipped with feed inlet, gas feed, gas vent and discharge port；The gas feed and gas vent are equal
It is communicated by pipeline with seal closure；The lower section of the reaction zone is equipped with to collect the catch basin of spent shower water, the catch basin
It is connected by pipeline with wastewater storage tank, the wastewater storage tank is connected by pipeline with feed inlet and shower water respectively；It is described
At least one infrared temperature probe and at least one spray head are equipped in seal closure, the spray head is connected with shower water.
8. the preparation facilities of super absorbent resin according to claim 7, it is characterised in that：The two sides of the reaction zone
Be equipped with adjusting rod below edge, the adjusting rod can up and down adjustment reaction zone both sides of the edge, make the both sides of the edge and reaction
Angle α is formed between band main body, the scope of the angle α is 90~180 degree.
9. the preparation facilities of the super absorbent resin according to claim 7 or 8, it is characterised in that：The end of the reaction zone
There are gap between portion and seal closure, the altitude range in the gap is 3~16mm；The gap is charging gap.
10. the preparation facilities of super absorbent resin according to claim 7, it is characterised in that：The spray head is arranged on
At the 1/2~2/3 of seal closure rear portion；The rotation direction of the spray head is adjusted, and the angular range of adjusting is 30~150 degree.
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| CN201810003975.8A CN108084365A (en) | 2018-01-03 | 2018-01-03 | The preparation method and its preparation facilities of a kind of super absorbent resin |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111253525A (en) * | 2020-01-17 | 2020-06-09 | 四川大学 | Method for treating and recycling (methyl) acrylic acid wastewater |
| CN115253915A (en) * | 2022-08-22 | 2022-11-01 | 山东滨农科技有限公司 | Device and method for treating sodium tetrachloroaluminate in glufosinate-ammonium production |
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| CN103408780A (en) * | 2013-07-23 | 2013-11-27 | 浙江卫星石化股份有限公司 | High-performance high-water-absorbability resin preparation method |
| CN204268809U (en) * | 2014-11-25 | 2015-04-15 | 天津市浩宇助剂有限公司 | A kind of energy-saving super absorbent resin polymerization drying production line |
| CN205392914U (en) * | 2016-03-11 | 2016-07-27 | 常州市天润木业有限公司 | Electron beam curing equipment |
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| CN1539853A (en) * | 2003-11-01 | 2004-10-27 | 山东省科源石油化工生产力促进中心 | Method for producing high absorptive resin |
| CN101050244A (en) * | 2006-04-07 | 2007-10-10 | 张超 | Method for producing high absorption resin, and polymerization reactor |
| CN103408780A (en) * | 2013-07-23 | 2013-11-27 | 浙江卫星石化股份有限公司 | High-performance high-water-absorbability resin preparation method |
| CN204268809U (en) * | 2014-11-25 | 2015-04-15 | 天津市浩宇助剂有限公司 | A kind of energy-saving super absorbent resin polymerization drying production line |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111253525A (en) * | 2020-01-17 | 2020-06-09 | 四川大学 | Method for treating and recycling (methyl) acrylic acid wastewater |
| CN111253525B (en) * | 2020-01-17 | 2024-04-02 | 四川大学 | Method for treating (methyl) acrylic acid waste water and recycling |
| CN115253915A (en) * | 2022-08-22 | 2022-11-01 | 山东滨农科技有限公司 | Device and method for treating sodium tetrachloroaluminate in glufosinate-ammonium production |
| CN115253915B (en) * | 2022-08-22 | 2024-04-05 | 山东滨农科技有限公司 | Treatment device and treatment method for sodium tetrachloroaluminate in glufosinate production |
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