Corrosion-and scaling-inhibiting water treating agent

Abstract

The invention is a corrosion and scale inhibitor water treatment agent, which is characterized by being composed of a liquid dielectric hydrophobic substance, an oil-soluble corrosion inhibitor, a water-soluble dispersant, and a composite sensitizing emulsifier. The water treatment agent of the present invention does not contain phosphorus and other harmful substances to the ecological environment. It is not mainly dissolved when added to the water body, but mainly exists in the form of a highly dispersed metastable hydrophobic phase, which can be absorbed at the liquid-solid interface or the heat-providing interface. Instability induced by metal ionization or thermal instability occurs preferentially, and self-enrichment occurs to form a high-resistance hydrophobic liquid film, which effectively inhibits corrosion and scaling nucleation processes on the metal surface, maximizes drug efficacy, and reduces drug use. Dosage: used for water quality treatment in industrial circulating cooling water systems and boiler water systems, without pre-film treatment.

Description

technical field [0001] The invention belongs to water treatment technology, and more specifically relates to a corrosion and scale inhibitor used in industrial circulating cooling water and boiler water systems and a treatment method thereof. Background technique [0002] The water treatment agents currently used in industrial circulating cooling systems or boiler water systems mainly include corrosion inhibitors, scale inhibitors and dispersants, etc., and the types of corrosion inhibitors include chromate, nitrite, silicate, molybdate, zinc Salt, phosphate, polyphosphate, organic phosphonate, mercaptobenzothiazole (MBT), benzotriazole (BTA), etc.; types of scale inhibitors and dispersants include polyphosphate, organic phosphoric acid, phosphine carboxylic acid, organic Phosphate, polycarboxylate, etc. These water treatment agents exist in the form of solution in the water body, and they need to be prefabricated with a special precipitation film on the surface of the meta...

AI Technical Summary

Problems solved by technology

Once these prefabricated precipitation films are partially damaged, local corrosion that is difficult to suppress will occur in this part, and pre-film treatment must be done again. However, the on-site pre-film treatment, especially the process of re-pre-film treatment, is often relatively cumbersome.

Simultaneously, these water treatment agents also have a large amount of use, and have defects such as phosphorus-containing environmental pollution and higher prices (Zhou Bensheng, "Industrial Water Treatment", Chemical Industry Press, 1997)