High-temperature-resistant slow-release scale inhibitor

Abstract

The invention relates to the field of water treatment chemicals, in particular to a high-temperature-resistant slow-release scale inhibitor. The high-temperature-resistant slow-release scale inhibitor comprises the following substances in parts by weight: 6-12 parts of a starch substrate, 12-15 parts of acrylic acid, 6-10 parts of 2-acrylamido-2-methylpropane sulfonic acid, 20-25 parts of polyaspartic acid, 5-10 parts of a nitrogen-containing heterocyclic compound composition, 10-15 parts of water-soluble oxidative inorganic metal salt, 5-10 parts of water-soluble inorganic zinc salt, 5-10 parts of homopolycarboxylic acid, 5-10 parts of lignosulfonate, 10-15 parts of sodium polyhydroxy carboxylate, 5-10 parts of a cellulose derivative, 5-8 parts of a composite initiator, 3-6 parts of a dispersed activator and 5-10 parts of an auxiliary corrosion inhibitor. The high-temperature-resistant slow-release scale inhibitor provided by the invention is low in cost, wide in source, friendly to environment, nontoxic and free from secondary pollution; the scale inhibitor is resistant to high temperature, can effectively inhibit the formation of calcium carbonate scales, calcium sulfate scales, barium sulfate scales and calcium phosphate scales in an oilfield pipeline and a boiler, has a good slow release effect on the pipeline and the boiler, and can prolong the service life.

Description

technical field [0001] The invention relates to the field of water treatment chemicals, in particular to a high temperature resistant corrosion and scale inhibitor. Background technique [0002] The scarcity and pollution of China's water resources have aroused serious concern. With the increasing development of industrial production, industrial water consumption has increased rapidly, among which industrial circulating cooling water accounts for more than 60% of industrial water consumption. , during the cooling water circulation process, the cooling water evaporates continuously, and the salts in the water are concentrated and deposited. The surface of system pipes and equipment seriously affects the condensation and cooling effect of circulating water, increases system resistance and end difference, increases energy consumption, and even blocks pipes in severe cases. Corrosion equipment reduces the service life of equipment and increases maintenance frequency. Threatenin...

AI Technical Summary

Problems solved by technology

But the problem with it is that after long-term repeated regeneration and use of the resin, its exchange capacity will also decrease.