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Phosphorus-free composite corrosion and scale inhibitor

A corrosion and scale inhibitor, composite technology, applied in the field of water treatment, can solve the problems of poor effect, environmental pollution, large usage, etc., and achieve the effect of simple process, storage resistance and long service life

Inactive Publication Date: 2015-04-22
艾思伟 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of existing corrosion and scale inhibitors such as large usage, pollution to the environment and poor effect on treating calcium phosphate scale, zinc scale and iron oxide deposition, the present invention provides a phosphorus-free composite corrosion and scale inhibitor , the composition of the corrosion and scale inhibitor of the present invention does not contain organic or inorganic phosphorus, it is a composite type of corrosion and scale inhibitor combined with high molecular polymer and inorganic salt, and can be widely used in the anticorrosion and antirust of metal products It has the advantages of less dosage and no harm to the environment, human body and crops. It is an environmentally friendly corrosion inhibitor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 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.

[0022] The preparation method of above-mentioned a kind of non-phosphorus composite type corrosion and scale inhibitor, its steps are:

[0023] (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;

[0024] (b) Add hydroxyethyl acrylate to the solution in step (a) for polymerization to obtain a hydroxyethyl acrylate / sodium acryloyldimethyl taurate...

Embodiment 2

[0039]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.

[0040] The preparation method of above-mentioned a kind of non-phosphorus composite type corrosion and scale inhibitor, its steps are:

[0041] (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;

[0042] (b) Add hydroxyethyl acrylate to the solution in step (a) for polymerization to obtain a hydroxyethyl acrylate / sodi...

Embodiment 3

[0049] 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.

[0050] The preparation method of above-mentioned a kind of non-phosphorus composite type corrosion and scale inhibitor, its steps are:

[0051] (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;

[0052] (b) Add hydroxyethyl acrylate to the solution in step (a) for polymerization to obtain a hydroxyethyl acrylate / sodium acryloyldimethyl taurate ...

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PUM

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Abstract

The invention discloses a phosphorus-free composite corrosion and scale inhibitor and belongs to the field of water treatment. The corrosion and scale inhibitor consists of 20-30 parts of calcium tartrate dehydrate, 10-20 parts of octadecyl glucoside, 8-12 parts of benzotriazole, 3-5 parts of bi(hydroxymethyl) imidazolidinyl urea, 15-20 parts of methyl silanol, 10-15 parts of allantoin, 12-15 parts of hydroxyethyl acrylate / sodium acryloyldimethyl taurate / acrylamide copolymer, 8-10 parts of glyceryl polymethacrylate and 60-70 parts of water. The corrosion and scale inhibitor disclosed by the invention does not contain organic or inorganic phosphorus components, is a composite corrosion and scale inhibitor formed by combining a high polymer and an inorganic salt, has the advantages of small amount and harmlessness to the environment, human body and crops, is an environment-friendly corrosion and scale inhibitor and is suitable for industrialized application.

Description

technical field [0001] The invention belongs to the field of water treatment, and more specifically relates to 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 widely used at present. It ...

Claims

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Application Information

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IPC IPC(8): C02F5/10C02F5/12
CPCY02W10/37C02F5/125C02F2303/08C02F2303/22
Inventor 程迎春
Owner 艾思伟
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