Composite phosphorus-free corrosion and scale inhibitor and its application

Abstract

The invention provides a composite phosphorus-free corrosion and scale inhibitor and its application. The composite phosphorus-free corrosion and scale inhibitor is composed of a corrosion and scale inhibitor A and a corrosion and scale inhibitor B, wherein the corrosion and scale inhibitor A is obtained through mixing polyepoxysuccinic acid (PESA), sodium gluconate and water; and the corrosion and scale inhibitor B is obtained through mixing hydrolytic polymaleic anhydride (HPMA), an acrylic acid / 2-acrylamide-2-methylpropanesulfonic acid copolymer (AA / AMPS), a zinc salt, a fluorescent tracer and water. The composite phosphorus-free corrosion and scale inhibitor, which compounds the corrosion and scale inhibitor A and the corrosion and scale inhibitor B according to a weight ratio of the corrosion and scale inhibitor A to the corrosion and scale inhibitor B of 1:2, has the advantages of excellent corrosion and scale inhibition effects, avoiding of a water eutrophication problem caused by phosphorus discharge, environmental pollution mitigation, and good environmental protection property.

Description

technical field [0001] The invention relates to a composite non-phosphorus corrosion and scale inhibitor and its application. Background technique [0002] With the rapid development of my country's economy and society, the contradiction between water supply and demand has become more prominent, and the shortage of water resources has become an important restrictive factor for the sustainable development of economy and society. Industrial enterprises are large users of urban water consumption, and industrial water accounts for more than 60% of the total water consumption. Most of the industrial water is circulating cooling water, and the cooling water consumption can reach 85% to 90% of the total water consumption. Therefore, saving circulating cooling water is of great significance to industrial water conservation, and increasing the reuse rate of water, that is, increasing the concentration of circulating cooling water, is an effective way to save water consumption in cir...

AI Technical Summary

Problems solved by technology

On the one hand, it has made a great positive contribution to solving the corrosion and scaling problems of industrial circulating water systems. It is conceivable that without the presence of polymeric phosphorus and organic phosphine, there will be no safe long-term operation of industrial circulating water systems and production equipment. Phosphorus systems Water treatment agents have brought huge wealth to society

On the other hand, because phosphorus-based water treatment agents will bring a large amount of phosphorus-containing compounds to industrial wastewater, resulting in unfriendly to the environment, although phosphorus is non-toxic, as a nutrient source, it makes water eutrophication and promotes microorganisms, especially Algae overgrowth, causing lake water blooms, seawater red tides and other hazards, destroying the ecological balance

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