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Composite scale-proof corrosion inbibitor containing poly epoxy succinic acid and its use

A technology of polyepoxysuccinic acid, scale and corrosion inhibitor, applied in descaling and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve good comprehensive performance, good corrosion inhibition performance, economical effect of dosage

Active Publication Date: 2005-05-18
中国石油化工股份有限公司北京燕山分公司研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that substituted alkyl polycarboxylic acids or substituted alkyl polycarboxylates must be used for the treatment of circulating cooling water with high pH and high alkalinity

Method used

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  • Composite scale-proof corrosion inbibitor containing poly epoxy succinic acid and its use
  • Composite scale-proof corrosion inbibitor containing poly epoxy succinic acid and its use
  • Composite scale-proof corrosion inbibitor containing poly epoxy succinic acid and its use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation process: prepare 80.0g of composite scale and corrosion inhibitor containing polyepoxysuccinic acid

[0037] Weigh 13.3g of polyepoxysuccinic acid with 30% active component (product of Beijing Lianzhong Dadi Technology Co., Ltd., the same below) and acrylic acid / hydroxypropyl acrylate copolymer T-225 (limit viscosity at 30°C is 0.075dl / g, AA / HPA=70 / 30) 26.7g, PBTCA 8.0g with 50% active component and p-diphosphine sulfonic acid 10.0g with 40% active component, 1.7g zinc chloride, 20.3g water was added , shake well to obtain 80.0g of the desired preparation.

[0038] When the prepared agent is added to the test water at a concentration of 80.0mg / L, the effective concentrations of polyepoxysuccinic acid, T-225, PBTCA, p-diphosphine sulfonic acid and zinc ions in the water are 4.0mg respectively. / L, 8.0 mg / L, 4.0 mg / L, 4.0 mg / L and 0.8 mg / L.

Embodiment 2

[0040] Preparation process: prepare 80.0g pharmaceutical solution

[0041] Weigh 20.0 g of polyepoxysuccinic acid with 30% active component and acrylic acid / hydroxypropyl acrylate / methyl acrylate copolymer (limit viscosity at 30°C is 0.073dl / g, AA / HPA / MA=70 / 15 / 15) 25.0g, 8.0g of PBTCA with 50% active component and 10.0g of glycine dimethylidene phosphonic acid with 40% active component, add 17.0g of water, shake well to get 80.0g of the desired preparation Pharmacy.

[0042] When the prepared agent is added to the test water at a concentration of 80 mg / L, the effective concentrations of polyepoxysuccinic acid, AA / HPA / MA copolymer, PBTCA and glycine dimethylidene phosphonic acid in the water are 6.0 mg / L, 7.5 mg / L, 4.0 mg / L, 4.0 mg / L.

Embodiment 3

[0044] Preparation process: prepare 80.0g pharmaceutical solution

[0045] Weigh 13.3 g of polyepoxysuccinic acid with 30% active component and acrylic acid / 2-methyl-2'-acrylamidopropane sulfonic acid copolymer (limit viscosity at 30°C is 0.078 dl / g, AA / AMPS=70 / 30) 20.0g, 5.0g p-diphosphonic acid with 40% active component and 10.0g sulfamic acid dimethylidene phosphonic acid with 40% active component, add 31.7g water, shake well, That is, 80.0 g of the medicament to be prepared is obtained.

[0046] When the prepared agent is added to the test water at a concentration of 80.0mg / L, the water containing polyepoxysuccinic acid, AA / AMPS copolymer, p-diphosphine sulfonic acid, and sulfamic acid dimethylidene phosphonic acid. The effective concentrations were 4.0mg / L, 6.0mg / L, 2.0mg / L and 4.0mg / L, respectively.

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Abstract

The present invention relates to a kind of composite antiscale corrosion inhibitor containing polyepoxy succinic acid. The composite antiscale corrosion inhibitor includes two kinds of organic phosphonic acid and polyepoxy succinic acid, and may contain zinc salt and copper corrosion inhibitor, if necessary. The composite antiscale corrosion inhibitor is suitable for processing circular cooling water and can make the calcium hardness reach 1200 mg / L.

Description

technical field [0001] The invention relates to a composite scale and corrosion inhibitor and its application in the treatment of circulating cooling water, in particular, the present invention relates to a composite scale and corrosion inhibitor containing polyepoxysuccinic acid and its application in circulating cooling water processing applications. Background technique [0002] Water is an important chemical substance necessary for human survival. With economic development and population growth, the crisis presented by water scarcity is becoming more and more serious. In order to protect the increasingly scarce freshwater resources, on the one hand, people try to achieve large-scale seawater desalination with advanced technology; the only way. Circulating cooling water is a major consumer of water in industrial production. Using high-efficiency water quality stabilization technology to increase the concentration of circulating water is the most direct and effective wa...

Claims

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Application Information

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IPC IPC(8): C02F5/14
CPCC23F11/08C23F14/02
Inventor 秦会敏郦和生成敏胡艳华闫岩任志峰常磊
Owner 中国石油化工股份有限公司北京燕山分公司研究院
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