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Method for preparing polyacrylamide

A technology of polyacrylamide and acrylamide, which is applied in the chemical industry, can solve the problems of high production cost, low production efficiency, and unguaranteed product quality, and achieve the effects of short polymerization time, high production efficiency and stable reaction

Active Publication Date: 2013-01-30
河南辰龙实业有限公司
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Problems solved by technology

[0002] Ultra-low molecular weight polyacrylamide has a large demand in drilling, textile and other industries, and the demand is increasing year by year. In China, ultra-low molecular weight polyacrylamide is a product in short supply, and most of it is imported from abroad. The main reason is that domestic The production formula, production technology and production method are immature and unscientific, resulting in low production efficiency, high production cost and unguaranteed product quality

Method used

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Embodiment Construction

[0013] The technical solutions of the present invention will be described in further detail below through specific implementation methods.

[0014] A preparation method of polyacrylamide, it comprises the following steps:

[0015] Step 1, dosing: add 875 parts by weight of water to the dosing tank, then add 112.5 parts by weight of cationic monomer under stirring, then heat the dosing tank, and add 1000 parts by weight of propylene under stirring Amide, after the acrylamide is completely dissolved, the prepared solution is obtained, and the temperature of the final prepared solution must not exceed 30°C; due to the large temperature drop during the dissolution process of acrylamide, the temperature of the prepared solution drops significantly, and heating is required to speed up the dissolution of acrylamide .

[0016] Step 2, adjust pH value: add calcium hydroxide powder in described preparation liquid, so that adjust the pH value of described preparation liquid, and make th...

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Abstract

The invention provides a method for preparing polyacrylamide. The method comprises the following steps of: adding 875 weight parts of water into a preparation kettle; adding 112.5 weight parts of cationic monomer in a stirring state; heating the preparation kettle, and adding 1,000 weight parts of acrylamide in a stirring state to obtain a preparation liquid after the acrylamide is completely dissolved; regulating the pH value of the preparation liquid to be between 7 and 9; adding excessive initiating agent sequentially into the preparation liquid in a dilated reaction container in a stirring state, and standing to perform an implosion reaction to obtain a polymer expansion body, wherein the initiating agent is peroxide aqueous solution with concentration of between 1.5 and 2.5 percent and sulfite with concentration of between 1.5 and 2.5 percent; and granulating, baking and screening the polymer expansion body sequentially to obtain the polyacrylamide. The preparation method has the advantages of short polymerization time, smooth reaction, low production cost and reliable product quality.

Description

technical field [0001] The invention relates to a preparation method of ultra-low molecular weight polyacrylamide, which belongs to the field of chemical industry. Background technique [0002] Ultra-low molecular weight polyacrylamide has a large demand in drilling, textile and other industries, and the demand is increasing year by year. In China, ultra-low molecular weight polyacrylamide is a product in short supply, and most of it is imported from abroad. The main reason is that domestic The production formula, production technology and production method are immature and unscientific, resulting in low production efficiency, high production cost and unguaranteed product quality. [0003] In order to solve the above existing problems, people have been seeking an ideal technical solution. Contents of the invention [0004] The purpose of the present invention is to address the deficiencies of the prior art, thereby providing a method for preparing polyacrylamide with shor...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F4/40C08J3/12C08L33/26
Inventor 余荣和
Owner 河南辰龙实业有限公司
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