Scale and corrosion inhibitor

Abstract

The invention discloses a scale and corrosion inhibitor. The scale and corrosion inhibitor is prepared from the following raw materials in parts by weight: 20 to 25 parts of amino tri(methylene phosphonic acid), 30 to 35 parts of 1-hydroxyethane 1,1-diphosphonic acid, 15 to 20 parts of amino tri(methylene phosphonic acid), 3 to 5 parts of sodium ethylenediamine tetramethylene phosphonate, 2 to 5 parts of polyacrylic acid, 2 to 6 parts of lauric acid, 1 to 3 parts of polyaspartic acid, 1 to 3 parts of 2-hydroxyphosphonoacetic acid, 1 to 3 parts of methyl benzotriazole, 2 to 6 parts of sodium gluconate, 6 to 8 parts of zinc powder, 0.5 to 1 part of surfactant, and 60 to 70 parts of deionized water. The scale and corrosion inhibitor disclosed by the invention has a favorable restraining effect on calcium and calcium carbonate, and has the capabilities of dispersing slightly soluble inorganic salts in water and protecting metal against corrosion and rusting.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion inhibition, and in particular relates to a scale and corrosion inhibitor. Background technique [0002] During the manufacture, processing, production and operation of mechanical equipment, it is inevitable to contact with some aqueous solutions, which will not only corrode the metal surface, but also form some scales, the most common scales are calcium carbonate, calcium silicate and other scales, so it is usually necessary to add Scale inhibitors have excellent scale inhibition and dispersion properties for calcium carbonate and calcium phosphate, and can reduce the appearance of scale. Currently, the scale and corrosion inhibitors on the market have a single component, and the scale removal and corrosion inhibition effects are not good. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a scale and corrosion inhibitor, which has good...

AI Technical Summary

Problems solved by technology

[0002] During the manufacture, processing, production and operation of mechanical equipment, it is inevitable to contact with some aqueous solutions, which will not only corrode the metal surface, but also form some scales, the most common scales are calcium carbonate, calcium silicate and other scales, so it is usually necessary to add Scale inhibitors have excellent scale inhibition and dispersion properties for calcium carbonate and calcium phosphate, and reduce the appearance of scale. Currently, the scale and corrosion inhibitors on the market have a single component, and the scale removal and corrosion inhibition effects are not good.