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Preparation method for phosphorus-free compound corrosion and scale inhibitor

A corrosion and scale inhibitor, composite technology, applied in the field of water treatment, can solve the problems that the preparation of slow-release scale and inhibitor has no reference significance, the use of corrosion and scale inhibitor is large, and the environment is polluted, so as to achieve storage resistance , No pollution to the environment, easy post-processing effect

Active Publication Date: 2015-04-29
广州市清顺环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the existing corrosion and scale inhibitors have a large amount of use, pollute the environment, and the preparation method of the corrosion and scale inhibitors has a narrow application range, and there is no reference value for the preparation of slow-release scale inhibitors with new components, etc., The invention provides a method for preparing a phosphorus-free composite corrosion and scale inhibitor. The corrosion and scale inhibitor components of the invention do not contain organic or inorganic phosphorus, and are a composite type of high molecular polymer and inorganic salt. Corrosion and scale inhibitor, the present invention finally obtains an environment-friendly corrosion inhibitor with good corrosion inhibition effect and storage resistance by rationally designing the mixing sequence of various substances and controlling the temperature, stirring speed and time during the preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A phosphorus-free composite corrosion and scale inhibitor, its composition and the mass parts of each component are: 25 parts of calcium tartrate, 20 parts of stearyl glucoside, 10 parts of benzotriazole, 4 parts of bis( Hydroxymethyl) imidazolidinyl urea, 20 parts methyl silanol, 10 parts allantoin, 15 parts hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, 10 parts glycerol polymethacrylate, 65 parts water.

[0026] The preparation method of above-mentioned a kind of non-phosphorus composite type corrosion and scale inhibitor, its steps are:

[0027] (a) Add sodium acryloyldimethyltaurate, water and initiator into the reaction bottle and stir evenly, then heat to 85°C, wherein the initiator is sodium persulfate, sodium acryloyldimethyltaurate, The mass ratio of water and sodium persulfate is 50: 40: 1;

[0028] (b) Add hydroxyethyl acrylate to the solution in step (a) for polymerization to obtain a hydroxyethyl acrylate / sodium acryloyldimethyl taurate...

Embodiment 2

[0043] A phosphorus-free composite corrosion and scale inhibitor, its composition and the mass parts of each component are: 20 parts of calcium tartrate, 15 parts of stearyl glucoside, 8 parts of benzotriazole, 3 parts of bis( Hydroxymethyl) imidazolidinyl urea, 15 parts methyl silanol, 15 parts allantoin, 12 parts hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, 8 parts glycerol polymethacrylate, 60 parts water.

[0044] The preparation method of above-mentioned a kind of non-phosphorus composite type corrosion and scale inhibitor, its steps are:

[0045] (a) Add sodium acryloyl dimethyl taurate, water and initiator into the reaction bottle and stir evenly, then heat to 80°C, wherein the initiator is tert-butyl hydroperoxide, acryloyl dimethyl taurine The mass ratio of sodium bicarbonate, water and tert-butyl hydroperoxide is 55: 40: 1;

[0046] (b) Add hydroxyethyl acrylate to the solution in step (a) for polymerization to obtain a hydroxyethyl acrylate / sod...

Embodiment 3

[0053] A phosphorus-free composite corrosion and scale inhibitor, its composition and the mass parts of each component are: 30 parts of calcium tartrate, 10 parts of stearyl glucoside, 12 parts of benzotriazole, 5 parts of bis( Hydroxymethyl) imidazolidinyl urea, 17 parts methyl silanol, 13 parts allantoin, 14 parts hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, 9 parts glycerol polymethacrylate, 70 parts water.

[0054] The preparation method of above-mentioned a kind of non-phosphorus composite type corrosion and scale inhibitor, its steps are:

[0055] (a) Add sodium acryloyldimethyltaurate, water and initiator into the reaction bottle and stir evenly, then heat to 90°C, wherein the initiator is sodium persulfate, sodium acryloyldimethyltaurate, The mass ratio of water and sodium persulfate is 60: 35: 1;

[0056] (b) Add hydroxyethyl acrylate to the solution in step (a) for polymerization to obtain a hydroxyethyl acrylate / sodium acryloyldimethyl taurate ...

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Abstract

The invention discloses a preparation method for a phosphorus-free compound corrosion and scale inhibitor, and belongs to the field of water treatment. The corrosion and scale inhibitor is composed of 20-30 parts of calcium tartrate dihydrate, 10-20 parts of octadecyl glucoside, 8-12 parts of benzotriazole, 3-5 parts of double (hydroxymethyl) imidazole alkyl urea, 15-20 parts of methyl silanol, 10-15 parts of allantoin, 12-15 parts of a hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, 8-10 parts of glyceryl polymethacrylate and 60-70 parts of water. The corrosion and scale inhibitor is free of organic or inorganic phosphorus, is the compound corrosion and scale inhibitor which is formed by combining a high molecular polymer and inorganic salt, has the advantages of being less in dosage, hazard-free on the environment, humans and crops and the like, and is an environment-friendly corrosion and scale inhibitor; the preparation method is simple in technique, reasonable in design, mild in conditions, easy to operate and suitable for industrialized application.

Description

technical field [0001] The invention belongs to the field of water treatment, and more specifically relates to a preparation method of a phosphorus-free composite corrosion and scale inhibitor. Background technique [0002] my country is a country seriously short of water resources. There are 18 provinces, municipalities and autonomous regions whose per capita water resources are lower than the 2000 m per capita water resources considered by the United Nations Sustainable Development Commission. 3 , less than 1000 m in 10 provinces, municipalities and autonomous regions 3 The minimum survival line, the serious shortage of water resources will definitely affect the normal production and life, affect the economic development, circulating cooling water is a large industrial water. Due to the increasing shortage of fresh water resources, industrial cooling water treatment agents are getting more and more attention. Organic phosphonic acid is a type of water treatment agent wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F5/12
CPCY02W10/37C02F5/10C02F5/12
Inventor 程迎春
Owner 广州市清顺环保科技有限公司
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