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

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...