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Preparation method of high-efficient copolymer silicon scale inhibitor

A technology of copolymer and scale inhibitor, which is applied in the field of preparation of high-efficiency copolymer silica scale inhibitor, which can solve the problems of single scale inhibitor performance, limited application and development, eutrophication of water body, etc., and achieve in-situ deoxidation ability High, strong regeneration ability, good adsorption characteristics

Inactive Publication Date: 2018-10-12
宁波金特信钢铁科技有限公司
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

Organic phosphine scale inhibitors have scale inhibition effect on various scales, but the phosphorus element in them will lead to eutrophication of water body, thus limiting its application and development; polycarboxylate scale inhibitors are mainly aimed at calcium scale, and their scale inhibition performance is single , such as acrylic acid (AA)-maleic anhydride (MA) copolymer

Method used

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  • Preparation method of high-efficient copolymer silicon scale inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] 1) Dissolve 40 parts of acrylic acid and 40 parts of 2-acrylamido-2-methylpropanesulfonic acid in 200 parts by weight of deionized water and mix well, add alkaline reagents to adjust the pH to 7~8, and then add 20 parts N-tert-butylacrylamide, stir evenly, add 0.2 parts of disodium edetate to the mixed monomer solution, and transfer the mixed solution into the reaction kettle after completely dissolving;

[0011] 2) Take 0.3 parts by weight of the active agent urea nitrate, dissolve them in 10 parts by weight of deionized water to make a solution, and set aside; add the modified activated carbon fiber material to the reaction kettle while stirring, then fill in nitrogen, and heat the solution to 70 ℃, slowly and alternately add the active agent into the reaction kettle, the dropwise addition is completed within 80 minutes, the temperature is raised to 85 ℃ and the reaction is kept at a constant temperature for 2 hours, and the reaction is stopped and cooled to room tempe...

Embodiment 2

[0015] It is exactly the same as Example 1, except that 45 parts of acrylic acid, 45 parts of 2-acrylamido-2-methylpropanesulfonic acid, and 10 parts of N-tert-butylacrylamide are added.

Embodiment 3

[0017] It is exactly the same as Example 1, except that 35 parts of acrylic acid, 35 parts of 2-acrylamido-2-methylpropanesulfonic acid, and 30 parts of N-tert-butylacrylamide are added.

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Abstract

The invention discloses a preparation method of a high-efficient copolymer silicon scale inhibitor, and the high-efficient copolymer silicon scale inhibitor is a terpolymer scale inhibitor prepared from 10 to 90 parts by weight of N-t-butyl acrylamide, 5 to 45 parts by weight of acrylic acid and 5 to 45 parts by weight of 2-acrylamide-2-methyl propane sulfonic acid as raw materials by a free radical aqueous solution polymerization method. The high-efficient copolymer silicon scale inhibitor has good scale inhibition performances, and can effectively prevent scaling problems of inorganic saltssuch as silicates on the surface of equipment during petroleum exploitation and industrial water circulation.

Description

technical field [0001] The invention relates to a preparation method of a high-efficiency copolymer silica scale inhibitor, which belongs to the technical field of industrial water treatment agent design. Background technique [0002] There are often carbonates, bicarbonates, sulfates, silicates and other substances in circulating water. Due to the continuous circulation and concentration of water, the concentration of various particles that can form scales is also increasing. Scaling, scaling will lead to a decrease in the cooling effect of circulating water, and the accumulation of sediment will cause a series of hazards such as equipment corrosion, which will seriously affect the normal operation of industrial equipment. Calcium carbonate, magnesium, calcium sulfate, and magnesium scale in circulating water are relatively fluffy and easy to remove, but silicate scale has a dense structure and is more difficult to remove after it is attached to equipment and pipeline walls...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C08F220/06C08F220/58C08F220/54
CPCC02F5/12C08F220/06C08F220/54C08F220/58C08F220/585
Inventor 金峰林亚珍
Owner 宁波金特信钢铁科技有限公司
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