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Biodegradable corrosion and scale inhibitor epoxy succinic acid copolymer and its preparation method

A corrosion and scale inhibitor, epoxy succinic acid technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve the problem of high cost, high catalyst requirements, epoxy succinate The problem of single type of acid water treatment agent, etc., to achieve the effect of excellent performance

Active Publication Date: 2012-08-01
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology provides an effective solution for treating harmful substances such as calcium carbonate (CaCO3) or bacteria that may cause fouling on equipment during use. Unlike traditional chemicals which are often highly polluting agents like chlorine gas), this new material doesn't have any negative side benefits when applied directly into drinking waters from industrial sources due its ability to break down easily without causing environmental concerns over their long term impact upon our healthcare system.

Problems solved by technology

Technologies described include improving the efficiency of removing chloride ion(C1) from wastewater effluents containing various metals like iron salts and zeolite materials during recirculated coolant cycles. These techniques aim towards reducing damage to ecologically sensitive areas through effective treatment without causing negative effects on aquatic environments.

Method used

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  • Biodegradable corrosion and scale inhibitor epoxy succinic acid copolymer and its preparation method
  • Biodegradable corrosion and scale inhibitor epoxy succinic acid copolymer and its preparation method
  • Biodegradable corrosion and scale inhibitor epoxy succinic acid copolymer and its preparation method

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Embodiment 1

[0023] Embodiment 1: Preparation of epoxy succinic acid / acrylic acid / 3-allyloxy-2-hydroxyl-1-propanesulfonic acid monosodium salt copolymer

[0024] Add 38.67g of maleic anhydride and 15.78g of potassium hydroxide to a four-necked flask equipped with a thermometer, a condenser, a dropping funnel and a constant-speed stirring device, dissolve them in deionized water, and add 1.21 g catalyst 1 ammonium molybdate, and then slowly add 30% hydrogen peroxide dropwise to the solution under stirring condition, and the pH of the reaction solution is 3-4 after the dropwise addition is completed. The reaction is continued for 1 hour at a temperature of 60-90° C. under stirring conditions to synthesize the intermediate epoxysuccinic acid. At a temperature of 60-90°C, under stirring conditions, after adding 22.13g of catalyst potassium hypophosphite to the solution, 134.95g of acrylic acid and 7.11g of 3-allyloxy-2-hydroxyl-1-propanesulfonic acid were added dropwise at the same time The m...

Embodiment 2

[0025] Embodiment 2: Preparation of epoxy succinic acid / acrylic acid / 3-allyloxy-2-hydroxyl-1-propanesulfonic acid monosodium salt copolymer

[0026]Add 38.67g of maleic anhydride and 20.45g of sodium hydroxide to a four-necked flask equipped with a thermometer, a condenser, a dropping funnel and a constant-speed stirring device, dissolve them in deionized water, and add 1.67g when the temperature rises to 60-90°C g catalyst 1 sodium tungstate, and then slowly add 30% hydrogen peroxide dropwise to the solution under stirring conditions, and the pH of the reaction solution is 3-4 after the dropwise addition is completed. The reaction is continued for 2 hours at a temperature of 60-90° C. under stirring conditions to synthesize the intermediate epoxysuccinic acid. At a temperature of 60-90°C, under stirring conditions, after adding 20.81g of catalyst ammonium phosphite twice, 161.94g of acrylic acid and 8.525g of 3-allyloxy-2-hydroxyl-1-propanesulfonate were added dropwise at the...

Embodiment 3

[0027] Embodiment 3: Preparation of epoxy succinic acid / acrylic acid / 3-allyloxy-2-hydroxyl-1-propanesulfonic acid monosodium salt copolymer

[0028] Add 58.0g of maleic anhydride and 26.04g of sodium hydroxide to a four-neck flask equipped with a thermometer, condenser, dropping funnel and constant speed stirring device, dissolve them with deionized water, and add 2.5 g catalyst 1 ammonium vanadate, and then slowly add 30% hydrogen peroxide dropwise to the solution under stirring condition, and the pH of the reaction solution is 3-4 after the dropwise addition is completed. The reaction is continued for 2 hours at a temperature of 60-90° C. under stirring conditions to synthesize the intermediate epoxysuccinic acid. At a temperature of 60-90°C, under stirring conditions, after adding 23.32g of catalyst sodium phosphite twice, 158.54g of acrylic acid and 11.93g of 3-allyloxy-2-hydroxyl-1-propanesulfonate were added dropwise at the same time A mixed solution of acid monosodium ...

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Abstract

The invention belongs to industrial recirculated cooling water treatment technical field, concretely relates to a biodegradable corrosion and scale inhibitor epoxy succinic acid copolymer and its preparation method. According to the invention, maleic anhydride is taken as a raw material, is subjected to alkaline hydrolysis to generate disodium maleate, under the effect of a catalyst, hydrogen peroxide is oxidized to epoxy disodium succinate; epoxy disodium succinate and acrylic acid, 3-allyloxy-2-hydroxy-1-moropholino ethanesulfonic acid monosodium salt are subjected to copolymerization to obtain epoxy succinic acid/acrylic acid/3-allyloxy-2-hydroxy-1-moropholino ethanesulfonic acid monosodium salt copolymer. The corrosion and scale inhibitor has the advantages of no phosphor, no nitrogen, high temperature resistance and biodegradable effect, and is a environment-friendly type corrosion and scale inhibitor. The prepared polymer possesses good scale inhibition performance and rust inhibition performance, and can be used for scale inhibition treatment in the fields of recirculated cooling water, boiler water, oil field water, membrane treatment and the like, and is a scale inhibition dispersant with excellent performance.

Description

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Claims

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Application Information

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Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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