CN101942052A - Method for producing anionic polyacrylamide - Google Patents
Method for producing anionic polyacrylamide Download PDFInfo
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- CN101942052A CN101942052A CN201010506764XA CN201010506764A CN101942052A CN 101942052 A CN101942052 A CN 101942052A CN 201010506764X A CN201010506764X A CN 201010506764XA CN 201010506764 A CN201010506764 A CN 201010506764A CN 101942052 A CN101942052 A CN 101942052A
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- China
- Prior art keywords
- acrylamide
- anionic polyacrylamide
- polymerization
- hydrolysis
- colloid
- 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.)
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- 229920002401 polyacrylamide Polymers 0.000 title claims abstract description 20
- 125000000129 anionic group Chemical group 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 17
- 230000007062 hydrolysis Effects 0.000 claims abstract description 11
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 11
- 239000000084 colloidal system Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000005469 granulation Methods 0.000 claims abstract description 8
- 230000003179 granulation Effects 0.000 claims abstract description 8
- 239000003999 initiator Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 6
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 6
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 6
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 6
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- VYGBQXDNOUHIBZ-UHFFFAOYSA-L sodium formaldehyde sulphoxylate Chemical compound [Na+].[Na+].O=C.[O-]S[O-] VYGBQXDNOUHIBZ-UHFFFAOYSA-L 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 229920000297 Rayon Polymers 0.000 claims description 3
- 238000006392 deoxygenation reaction Methods 0.000 claims description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 3
- -1 propylene amide Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000004898 kneading Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000005352 clarification Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 238000005354 coacervation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for producing anionic polyacrylamide, which comprises the following steps of: pumping acrylamide and deionized water into a proportioning kettle to prepare 17.5 to 18.5 percent acrylamide solution, adding initiator into the solution after introducing nitrogen and exhausting oxygen, stirring the solution uniformly, and then putting the solution into a polymerization tank to perform polymerization reaction; putting the completely polymerized acrylamide colloid into a kneader, and adding sodium hydroxide into the kneader for kneading; and after hydrolysis is finished, performing granulation, drying and powder screening on the obtained polyacrylamide colloid block according to the conventional process to obtain an anionic polyacrylamide powder product. The method has the advantages that: a lamp light irradiation method is adopted for polymerization so as to ensure acrylamide polymerization integrity and no residue; because the kneader and the hydrolysis method are adopted and the materials are continuously stirred, uniform contact of the acrylamide colloid and the sodium hydroxide is ensured, the hydrolysis is more complete, the utilization rate of raw materials is improved and the quality of the finished product is more stable; and equipment investment, energy consumption and production cost are reduced.
Description
Technical field
The present invention relates to a kind of high molecular weight water soluble polymer, especially relate to a kind of production method of anionic polyacrylamide.
Background technology
Anionic polyacrylamide is water miscible high molecular polymer.Owing to contain the polar group of some amount in its molecular chain, it can be by the solids that suspend in the planar water, make to build bridge between particle or make particle coacervation form big throw out by charge neutralization.So it can quicken the sedimentation of particle in the suspension, have and very significantly accelerate the solution clarification, promote effects such as filtration.Be mainly used in the flocculating settling of various trade effluents, the precipitation clarifying treatment, as steel plant wastewater, waste water from plating plant, metallurgical waste water, sewage disposals such as coal washing waste water, sludge dewatering etc.Also can be used for drinking water clarification and purifying treatment.Existing manufacture method comprises and adopts composite initiator system and through uv-radiation method initiated polymerization or adopt aqueous solution dispersion copolymerization method, though all can prepare satisfactory finished product, but transformation efficiency is low, and the poor heat stability of product is low at pyritous sewage medium viscosity retention rate.
Summary of the invention
The object of the present invention is to provide complete, the noresidue of a kind of polymerization, reduce the production method of the anionic polyacrylamide of use equipment, raising raw material availability.
For achieving the above object, the present invention can take following technical proposals:
The production method of anionic polyacrylamide of the present invention comprises the steps:
The first step, with specific conductivity ﹤ 5us/cm, pH value is acrylamide and the specific conductivity ﹤ 10us/cm of 6.5-7, and pH value is that the deionized water of 6.5-7 is squeezed in the batching still, be mixed with the acrylamide soln of content 17.5%～18.5%, logical nitrogen deoxygenation was 40 minutes after temperature was reduced to 12～14 ℃;
Second step, in the aforesaid propylene amide solution, add initiator disodium ethylene diamine tetraacetate, azo two (2 methyl-propyl miaow) dihydrochloride, Ammonium Persulfate 98.5, sodium formaldehyde sulphoxylate, the adding proportion of above-mentioned initiator is: disodium ethylene diamine tetraacetate 0.001%～0.01%, azo two (2 methyl-propyl miaow) dihydrochloride 0.001%～0.01%, Ammonium Persulfate 98.5 0.0002%～0.001%, sodium formaldehyde sulphoxylate 0.0002%～0.001%, put into polymerization tank after it is stirred, under the irradiation of light, carry out reactive polymeric;
The 3rd step, with polymerization in second step completely the acrylamide colloid put into kneader, add sodium hydroxide by the 2-3% of colloid gross weight and mediate, temperature is controlled at 65～70 ℃ during kneading, the time was controlled at 90～120 minutes;
The 4th step, after hydrolysis finishes, with resulting polyacrylamide blob of viscose routinely technology carry out granulation, oven dry, sieve powder and can obtain anionic polyacrylamide powder finished product.
In above-mentioned second step during reactive polymeric distance of acrylamide soln and fluorescent tube should remain between 150mm～180 mm, the time of light-illuminating was at 3～4 hours.
The particle diameter of granulation is 4～5mm in above-mentioned the 4th step, and temperature is 60～70 ℃ during the oven dry material.
The invention has the advantages that and in polymerization tank, adopt the light-illuminating method to carry out polymerization, guaranteed that acrylamide polymerization is complete, noresidue; Adopt the kneader hydrolysis method during hydrolysis, the stirring that material does not stop guarantees that the acrylamide colloid contacts uniformly with sodium hydroxide, makes hydrolysis more abundant, has improved utilization rate of raw materials, and final product quality is more stable; Only use batching still, polymerization tank, kneader and granulation, oven dry, sieve powder equipment in the whole process for making, reduced facility investment, reduced energy consumption, reduced production cost.
Adopt the physical and chemical index of the anionic polyacrylamide product that production method of the present invention produces to be:
Molecular weight 500～2,600 ten thousand viscosity (mPa.s) 〉=70
Salinity 362.6mg/L solid content 〉=89%
Molten speed≤2 hour degree of hydrolysis 15～28%.
Embodiment
The production method of anionic polyacrylamide of the present invention comprises the steps:
The first step, with specific conductivity ﹤ 5us/cm, pH value is acrylamide and the specific conductivity ﹤ 10us/cm of 6.5-7, and pH value is that the deionized water of 6.5-7 is squeezed in the batching still, be mixed with the acrylamide soln of content 17.5%～18.5%, logical nitrogen deoxygenation was 40 minutes after temperature was reduced to 12～14 ℃;
Second step, in the aforesaid propylene amide solution, add initiator disodium ethylene diamine tetraacetate, azo two (2 methyl-propyl miaow) dihydrochloride, Ammonium Persulfate 98.5, sodium formaldehyde sulphoxylate, the adding proportion of above-mentioned initiator is: disodium ethylene diamine tetraacetate 0.001%～0.01%, azo two (2 methyl-propyl miaow) dihydrochloride 0.001%～0.01%, Ammonium Persulfate 98.5 0.0002%～0.001%, sodium formaldehyde sulphoxylate 0.0002%～0.001%, put into polymerization tank after it is stirred, under the irradiation of light, carry out reactive polymeric; The distance of acrylamide and fluorescent tube should remain between 150mm～180 mm during polymerization, and the light-illuminating time was at 3～4 hours;
The 3rd step, with polymerization in second step completely the acrylamide colloid put into kneader, add sodium hydroxide by the 2-3% of colloid gross weight and mediate, temperature is controlled at 65～70 ℃ during kneading, the time was controlled at 90～120 minutes;
The 4th step, after hydrolysis finishes, with resulting polyacrylamide blob of viscose routinely technology carry out granulation (particle diameter of granulation be 4～5mm), oven dry (temperature is 60～70 ℃ during the oven dry material), sieve powder can obtain anionic polyacrylamide powder finished product.
Claims (3)
1. the production method of an anionic polyacrylamide is characterized in that: comprise the steps:
The first step, with specific conductivity ﹤ 5us/cm, pH value is acrylamide and the specific conductivity ﹤ 10us/cm of 6.5-7, and pH value is that the deionized water of 6.5-7 is squeezed in the batching still, be mixed with the acrylamide soln of content 17.5%～18.5%, logical nitrogen deoxygenation was 40 minutes after temperature was reduced to 12～14 ℃;
Second step, in the aforesaid propylene amide solution, add initiator disodium ethylene diamine tetraacetate, azo two (2 methyl-propyl miaow) dihydrochloride, Ammonium Persulfate 98.5, sodium formaldehyde sulphoxylate, the adding proportion of above-mentioned initiator is: disodium ethylene diamine tetraacetate 0.001%～0.01%, azo two (2 methyl-propyl miaow) dihydrochloride 0.001%～0.01%, Ammonium Persulfate 98.5 0.0002%～0.001%, sodium formaldehyde sulphoxylate 0.0002%～0.001%, put into polymerization tank after it is stirred, under the irradiation of light, carry out reactive polymeric;
The 3rd step, with polymerization in second step completely the acrylamide colloid put into kneader, add sodium hydroxide by the 2-3% of colloid gross weight and be hydrolyzed, temperature is controlled at 65～70 ℃ during hydrolysis, the time was controlled at 90～120 minutes;
The 4th step, after hydrolysis finishes, with resulting polyacrylamide blob of viscose routinely technology carry out granulation, oven dry, sieve powder and can obtain anionic polyacrylamide powder finished product.
2. the production method of anionic polyacrylamide according to claim 1 is characterized in that: in above-mentioned second step during reactive polymeric distance of acrylamide soln and fluorescent tube should remain between 150mm～180 mm, the time of light-illuminating was at 3～4 hours.
3. the production method of anionic polyacrylamide according to claim 1 is characterized in that: the particle diameter of granulation is 4～5mm in above-mentioned the 4th step, and temperature is 60～70 ℃ during the oven dry material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010506764XA CN101942052A (en) | 2010-10-14 | 2010-10-14 | Method for producing anionic polyacrylamide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010506764XA CN101942052A (en) | 2010-10-14 | 2010-10-14 | Method for producing anionic polyacrylamide |
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| Publication Number | Publication Date |
|---|---|
| CN101942052A true CN101942052A (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010506764XA Pending CN101942052A (en) | 2010-10-14 | 2010-10-14 | Method for producing anionic polyacrylamide |
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| Country | Link |
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| CN (1) | CN101942052A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788268A (en) * | 2013-04-07 | 2014-05-14 | 山东同力化工有限公司 | Process for preparing ultrahigh molecular weight polyacrylamide by hydrolytic agent spiral spray method |
| CN106930113A (en) * | 2016-12-21 | 2017-07-07 | 张文俊 | Natural mulberry silk cloth preparation method |
-
2010
- 2010-10-14 CN CN201010506764XA patent/CN101942052A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788268A (en) * | 2013-04-07 | 2014-05-14 | 山东同力化工有限公司 | Process for preparing ultrahigh molecular weight polyacrylamide by hydrolytic agent spiral spray method |
| CN103788268B (en) * | 2013-04-07 | 2016-03-16 | 山东同力化工有限公司 | Hydrolytic reagent spiral spray legal system is for the technique of super high molecular weight polyacrylamide |
| CN106930113A (en) * | 2016-12-21 | 2017-07-07 | 张文俊 | Natural mulberry silk cloth preparation method |
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Application publication date: 20110112 |