A degradable phosphorus-free composite corrosion and scale inhibitor

Abstract

The invention relates to a degradable phosphorus-free composite corrosion and scale inhibitor. The inhibitor is prepared from following raw materials by weight: 5-10 parts of sodium sulfate, 3-5 parts of alkyl polyglycoside, 3-5 parts of polyaspartic acid, 2-5 parts of carboxymethylcellulose, 8-20 parts of polyepoxysuccinic acid, 3-5 parts of a polymerized amino acid, 3-5 parts of sodium gluconate, 5-10 parts of xylogen, 1-2 parts of methylbenzotriazole and 40-50 parts of deionized water. According to the invention, the raw materials of the inhibitor are nontoxic, natural, renewable and degradable. The synergistic effects of all compositions are fully utilized, and performance of corrosion and scale inhibiting is improved and dosage is reduced. The inhibitor has the advantages of no toxicity, no harm, biodegradability, stable performance, and the like.

Description

technical field [0001] The invention relates to a scale inhibitor, in particular to a degradable phosphorus-free composite corrosion and scale inhibitor. Background technique [0002] The calcium and magnesium plasma contained in the water will continuously scale on the surface of the pipe wall in the circulating cooling water system, resulting in a decrease in the heat transfer efficiency of the pipe wall, and in severe cases, affecting the flow of circulating water. At the same time, electrochemical corrosion is formed, which makes the pipe wall gradually thinner, reduces the service life, and seriously affects the safe operation of the system. The traditional way to solve this problem is to add corrosion and scale inhibitors. [0003] At present, commonly used organophosphorus formula corrosion and scale inhibitors include hydroxyethylidene diphosphonic acid (HEDP), aminotrimethylene phosphonic acid (ATMP), 2-phosphonic acid butane-1,2-phosphonic acid butane- Compared w...

AI Technical Summary

Problems solved by technology

[0010] The present invention designs a degradable phosphorus-free composite corrosion and scale inhibitor, which solves the technical problems as follows: (1) the existing scale inhibitor contains phosphorus, is toxic, and cannot be degraded, and easily pollutes water bodies and the environment (2) existing carrier microsphere surface area is limited by immobilized enzyme preparation calcium gluconate technology, can't load too much enzyme protein, makes enzyme activity rate of recovery lower; (3) due to the impact of mass transfer resistance, reaction process H generated in 2 o 2 It cannot be decomposed quickly, resulting in the inactivation of GOD and CAT, and the immobilized enzyme loses most of its enzyme activity soon after continuous use