Non-Phosphorus composite anti incrustation eorrosion snhibiter and its application in water treatment

A technology of scale inhibitor and corrosion inhibitor, applied in water/sludge/sewage treatment, descaling and water softening, chemical instruments and methods, etc., to achieve good corrosion inhibition performance, excellent corrosion inhibition performance, comprehensive performance Good results

Active Publication Date: 2006-06-14
BEIJING YANHUA PETRO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the release of inorganic phosphorus after the degradation of the phosphorus-containing water treatment agent, the phosphorus in the circulating water drainage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Weighing 30.0g of polyaspartic acid with a solid content of 40%, 40.0g of T225 with a solid content of 30% (at 30°C, the limiting viscosity is 0.078dl / g, and the weight ratio is AA / HPA=80 / 20), Add 30.0g of water and shake well to obtain 100.0g of the medicament to be prepared.

[0061] When the prepared medicament was added to the test raw water 1 at a concentration of 100mg / L, the effective concentrations of polyaspartic acid and T225 in the water were 12mg / L and 12mg / L respectively.

Embodiment 2

[0063] Take by weighing 40.0g solid content and be that the polyepoxysuccinic acid of 40% and 30.0g 30% AA / AMPS simultaneously contain carboxylic acid group and sulfonic acid group binary copolymer (at 30 ℃, limit viscosity number is 0.074dl / g, The weight ratio is AA / AMPS=70 / 30), added into 30.0g of water, and shaken to obtain 100.0g of the medicament solution to be prepared.

[0064] When the prepared chemical solution is added to the test raw water 1 at a chemical concentration of 100 mg / L, the effective concentrations of polyepoxysuccinic acid and AA / AMPS binary copolymers containing both carboxylic acid groups and sulfonic acid groups in the water are respectively 16mg / L, 9mg / L.

Embodiment 3

[0066] Taking by weighing 30.0g solid content is 40% polyaspartic acid, 20.0g solid content is 40% polyepoxysuccinic acid and 10.0g solid content is 30% T225 (at 30 ℃, limit viscosity number is 0.078dl / g, the weight ratio is AA / HPA=80 / 20), added to 40.0 g of water, and shaken evenly to obtain 100.0 g of the medicament solution to be prepared.

[0067] When the prepared chemical solution is added to the test raw water 1 at a chemical concentration of 100 mg / L, the effective concentrations of polyaspartic acid, polyepoxysuccinic acid, and T225 in the water are 12 mg / L, 8 mg / L, and 3 mg, respectively. / L.

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Abstract

The present invention relates to a phosphorus-free composite antiincrustation corrosion inhibitor. It includes polyaspartic acid and/or polyepoxysuccinic acid and at least one kind of scale inhibition and dispersion agent, in which the scale inbibition and dispersion agent is polymer containing carboxylic acid group, or it includes polyaspartic acid and/or polyepoxysuccinic acid, zinc salt, molybdate or tungstate and polymer containing carboxylic acid group. Said invention is applicable to treatment of circulating cooling water.

Description

technical field [0001] The invention relates to a phosphorus-free composite scale and corrosion inhibitor and its application in circulating cooling water treatment. Background technique [0002] With the rapid development of industrial production, industrial water consumption is increasing day by day. In cities, industrial water often accounts for more than 70% of urban water consumption, and cooling water accounts for more than 80% of industrial water consumption. Due to the continuous circulation and concentration of cooling water during use, the mineral content in the water will also increase continuously, which will cause scaling and corrosion of equipment pipes. In order to reduce equipment corrosion, improve equipment utilization, save energy and water resources, and ensure the normal operation of production, it is necessary to add various water quality stabilizers to the circulating cooling water. High-efficiency water treatment agents can improve the level of wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F5/12
Inventor 郦和生
Owner BEIJING YANHUA PETRO CHEM
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