Corrosion and scale inhibiting agent for circulating cooling water

Abstract

A corrosion and scale inhibiting agent for circulating cooling water is composed of the following raw materials in parts by weight: 20 to 30 parts of polyaspartic acid, 20 to 30 parts of polyepoxysuccinic acid, 5 to 20 parts of alkyl epoxy carboxylate, 10 to 20 parts of acrylic acid-acrylate-sulfonate copolymer, and 20 to 40 parts of purified water. The main components of the corrosion and scale inhibiting agent such as polyaspartic acid, polyepoxysuccinic acid, alkyl epoxy carboxylate, and the like have an excellent biodegradability and a high corrosion and scale inhibiting performance, and the corrosion and scale inhibiting agent is a green water treatment agent. The agent does not contain any phosphorus and thus will not form calcium phosphate scales during the application process. The discharged sewage will not generate eutrophication pollution. The corrosion and scale inhibiting agent can be used without a membrane, is convenient to use, has the advantages of little using amount and low cost, reduces the operation cost of circulating water, and assists the management of circulating water.

Description

technical field [0001] The invention relates to a circulating cooling water agent, in particular to a corrosion and scale inhibitor for circulating cooling water. Background technique [0002] In recent years, with the progress of society and the enhancement of people's awareness of environmental protection, the development and application of green water treatment chemicals have attracted more and more attention. Taking the commonly used organic phosphoric acid corrosion and scale inhibitors at home and abroad as an example, phosphorus discharge will cause trophication of the surrounding waters and may cause "red tides". In some countries such as Europe, America and Japan, measures to ban phosphorus have been proposed. For example, Germany requires phosphorus discharge to be ≤1mg / L. Re-evaluate the function and performance of existing corrosion and scale inhibitors with the concept of green water treatment agent. Their use will be limited and they will be replaced by new an...

AI Technical Summary

Problems solved by technology

Taking the commonly used organic phosphoric acid corrosion and scale inhibitors at home and abroad as an example, phosphorus discharge will cause trophication of the surrounding waters and may cause "red tides"