CN85102644B - Production of polyacrylamide (pam) by tube-type polymerization with piston - Google Patents
Production of polyacrylamide (pam) by tube-type polymerization with piston Download PDFInfo
- Publication number
- CN85102644B CN85102644B CN85102644A CN85102644A CN85102644B CN 85102644 B CN85102644 B CN 85102644B CN 85102644 A CN85102644 A CN 85102644A CN 85102644 A CN85102644 A CN 85102644A CN 85102644 B CN85102644 B CN 85102644B
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- polymerizer
- piston
- polymkeric substance
- polyacrylamide
- polymerization
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The present invention relates to an aqueous solution polymerization method of acrylamide with medium concentration, which is characterized in that when polymer gel is pushed out, an anti-sticking agent does not need to be spread, and a plastic bag does not need to be lined either. A method different from the conventional method is adopted that a piston type tubular polymerizer pushed by hydraulic pressure is adopted, so that polymer gel can be easily and smoothly pushed out and squeezed into strips. The method greatly succeeds in trial production and does not have the defects of the conventional method.
Description
The invention belongs to the polymer-type flocculation agent and make the field, is the polymerization process of middle concentration polyacrylamide, adopts piston-type tubular type polymerizer.
Produce the block polymerization of concentration in the frequent employing of powder agglomates polyacrylamide (PAM).In polymerizer, add monomer acrylamide and initiator, polymerization takes place at a certain temperature.Because this polymkeric substance has very strong adhesive power, the discharging difficulty.Foreign technology is representative with day disclosure special permission 49-135,235, adopts the method that is coated with release agent at the polymerizer inwall.Operation is complicated, it is also undesirable to deviate from situation.In addition, the method for domestic useful lining plastics bag is peeled off discharging after the polymerization, also has the shortcoming that operation is complicated and consume a large amount of plastics bags.
In the present invention, use stainless steel tube to be polymerizer.Problem at original technology exists both need not be coated with release agent, need not serve as a contrast plastics bag again, but with the piston of an oil pressure actuated polymkeric substance be released polymerizer, as shown in the figure.
Acrylamide monomer (13) adds from the upper flange (can open) of tubular type polymerizer (8), for making monomer generation polymerization, adds initiator routinely.Add special additive in addition again, in pipe, carry out polyreaction then.The polyacrylamide that obtains after the polymerization interior piston of polymerizer (by packed-piston sheet (5), piston sheet (4), (6) and hold-down nut (7) are formed) to extrapolation.Can successfully push conical discharge port (12) to, cutting knife (17) is housed, jelly is cut into billot, help the operation of next process in this outlet.Be the temperature of controlled polymerization device, one hot water jacket (9) arranged in tubular type polymerizer outside.Oil pressure is imported and exported respectively in (1), (3) alternately.The import and export of hot water are respectively (14), (10).Oil pressure promotes piston (16) and moves up and down, to drive the piston of polymerizer.Piston (16) is contained in the bottom of piston rod (18), whole being contained in the oil cylinder (2).The polymerizer bottom has a dismountable flange (15) that polymerizer is connected securely with cylinder body, and is convenient to install maintenance.The stainless steel manufacturing of tubular type polymerizer, also available carbon steel manufacturing is then in chrome-faced.Piston sheet (4) adopts different materials with packed-piston sheet (5).Both proof strength guaranteed good seal again.The former uses stainless steel, and the latter uses tetrafluoroethylene.
The hot water temperature is best with 60～65 ℃ in the chuck.Water in the water jacket has begun heat effect, promotes the generation of polymerization, along with the carrying out of polyreaction, emits heat.At this moment the water in the water jacket plays cooling effect again, and the top temperature in the polymerizer is generally about 105 ℃.Pipe surface temperature is low, and portion of water is evaporated in the polyacrylamide glue, and condensation is also adhered to sub-tube wall, forms water membrane, prevents secure adhesion and release easily between polymkeric substance and the polymerization wall.The acryl amide gel, and granulator that is pushed out is cut into strip, is convenient to granulation in the screw pelletizer of next process, and last drying becomes the polyacrylamide dry granular.
The present invention is because the technology uniqueness, the comparing of the polyacrylamide of manufacturing and other method manufacturing, and its outstanding advantage is:
1.(after the granulation) can dry with far-infrared dryer, and unlikely generation is crosslinked.
2. water-soluble good especially, just can be dissolved in water fully in one hour, and method for distinguishing is produced, but a few hours or more than 24 hours nearly.
Claims (11)
1, the invention belongs to polymer-type flocculation agent manufacturing process, adopt solution polymerization process, polymkeric substance is extruded from polymerizer with the jelly form, it is characterized in that adopting piston to release the tubular type polymerizer of polymkeric substance.
2, by claim 1, described polymer-type flocculation agent, it is to be formed by acrylamide polymerization.
3, by claim 1, described polymerizer, it is with metal.
4, by claim 1, described polymerizer, the piston that its inside has an energy that polymkeric substance is released.
5, by claim 1, described polymerizer, dismountable flange is all arranged at its top and bottom.
6, by claim 1, described method has the cutting knife that jelly can be cut into strip in the polymerizer exit.
7, by claim 4, described piston, it has piston sheet that stainless steel makes and the packed-piston sheet made from tetrafluoroethylene.
8, by claim 1, described method, there is the mechanism of a driven plunger below of polymerizer.
9, by claim 8, described mechanism, it has with the fluid is the cylinder barrel and the piston of acting medium.
10, by claim 1, described polymerizer has a hot water jacket in its outside.
11, by the described hot water jacket of claim 10, its water temperature is 60-65 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102644A CN85102644B (en) | 1985-04-13 | 1985-04-13 | Production of polyacrylamide (pam) by tube-type polymerization with piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102644A CN85102644B (en) | 1985-04-13 | 1985-04-13 | Production of polyacrylamide (pam) by tube-type polymerization with piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85102644A CN85102644A (en) | 1987-05-27 |
| CN85102644B true CN85102644B (en) | 1988-05-04 |
Family
ID=4792649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85102644A Expired CN85102644B (en) | 1985-04-13 | 1985-04-13 | Production of polyacrylamide (pam) by tube-type polymerization with piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85102644B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054727A (en) * | 2019-04-25 | 2019-07-26 | 西安万德能源化学股份有限公司 | A kind of preparation method and device of polyacrylamide nano microballoon |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328422A (en) * | 2011-06-30 | 2012-01-25 | 蚌埠市振中橡塑制品有限公司 | Sealing structure on squeezing device of rubber-mould preforming machine |
| CN104587903A (en) * | 2015-01-22 | 2015-05-06 | 宜兴市阳洋塑料助剂有限公司 | Material recycling device for plasticizer manufacturing |
-
1985
- 1985-04-13 CN CN85102644A patent/CN85102644B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054727A (en) * | 2019-04-25 | 2019-07-26 | 西安万德能源化学股份有限公司 | A kind of preparation method and device of polyacrylamide nano microballoon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85102644A (en) | 1987-05-27 |
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| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |