Compound scale and corrosion inhibitor

Abstract

The invention relates to a compound scale and corrosion inhibitor which comprises the following components in percentage by mass: 20% of organic phosphonic carboxylic acid, 10% of a phosphonate, 20% of a sulfonate copolymer, 10% of polymaleic acid, 5% of zinc chloride, 1% of a copper corrosion inhibitor and 34% of purified water. A processing method comprises the following steps: S1, adding purified water accounting for 20% of the total water consumption of the purified water into a batching tank, and starting stirring; S2, adding organic phosphonic carboxylic acid and the phosphonate, and continuously stirring for 15 minutes; S3, adding the sulfonate copolymer and the polymaleic acid, and continuously stirring for 10 minutes; S4, adding zinc chloride, and continuously stirring for 15 minutes; after dissolving zinc chloride, adding the copper corrosion inhibitor; S5, adding all the rest purified water into the batching tank, and continuously stirring for 30 minutes until all the raw materials are completely dissolved and uniformly mixed; S6, stopping stirring, and standing for 2 hours to obtain a finished product. The compound scale and corrosion inhibitor has the characteristics of high slow release rate, high temperature resistance, strong scale inhibition capability, difficult decomposition and the like, has good chelating dispersion and lattice distortion effects, and can alleviate corrosion to copper materials.

Description

technical field [0001] The invention relates to the field of scale and corrosion inhibitors, in particular to a composite scale and corrosion inhibitor. Background technique [0002] With the rapid development of energy, electricity and iron and steel industry, the consumption of circulating cooling water is also increasing. In order to prevent pipeline corrosion and scaling caused by circulating cooling water, it is usually necessary to add a certain amount of scale inhibitor to circulating cooling water Corrosion inhibitors to prevent pipeline corrosion and scaling; [0003] The traditional scale and corrosion inhibitors are mainly polyphosphates, which are easy to decompose at a certain temperature, resulting in the failure of the drug effect, and poor scale and corrosion inhibition effects; [0004] Therefore, how to develop a new scale and corrosion inhibitor has become an urgent problem in the field of environmental protection and water treatment agents. Currently, th...

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Problems solved by technology

[0006] In order to solve the technical problems existing in the background technology, the present invention proposes a compound scale and corrosion inhibitor, which is compounded by using high-efficiency organic phosphine products and polycarboxylic acid and sulfonate with better dispersion effect in a certain proportion. It solves the situation that the original scale and corrosion inhibitors are not effective in scale and corrosion inhibition, and the scale and corrosion inhibition effects are well compatible while ensuring the effect

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