Anti-corrosion corrosion inhibitor for heat supply network and preparation method and application method of anti-corrosion corrosion inhibitor

Abstract

The invention discloses an anti-corrosion corrosion inhibitor for a heat supply network and a preparation method and application method of the anti-corrosion corrosion inhibitor. The anti-corrosion corrosion inhibitor is characterized by comprising, by weight, 15-25 parts of sodium sulfite or carbohydrazide or dimethyl ketoxime or acetone oxime, 4-12 parts of trisodium phosphate or sodium tripolyphosphate in phosphate, 8-15 parts of ammonium hydroxide or monoethanolamine or sodium hydroxide or potassium hydroxide as a pH conditioning agent, 15-25 parts of 1H-benzotriazole or mercaptobenzothiazole or dicyclohexylaminenitrite as a passivator and 33-48 parts of cyclohexylamine carbonate or hexamethylenetetramine or tetrahydroglyoxaline as a corrosion inhibitor body. The application method of the anti-corrosion corrosion inhibitor comprises the step that anti-corrosion corrosion inhibitor powder is directly added into water of the heat supply network, wherein the using amount is 80-120 mg / L. By means of the corrosion inhibitor, stainless steel pitting corrosion and galvanic corrosion occurring in the heat supply network can be effectively prevented; effective protection is formed between a gaseous phase space and a liquid phase space at the same time; and environmental friendliness is achieved.

Description

technical field [0001] The invention belongs to the technical field of corrosion protection, and relates to a heat network anti-corrosion and corrosion inhibitor specially used for a heat supply pipe network and a preparation and use method. Background technique [0002] In recent years, due to the frequent leakage of the heating pipe network, the frequent occurrence of winter heating accidents has caused serious social impacts, which has attracted widespread attention from the society. Existing reports have shown that the heating pipe network is buried underground, and leakage caused by corrosion occurs frequently, especially in the early stage; once a leakage occurs, it is difficult to deal with and repair due to the impact of ground buildings, resulting in a longer heating interruption , causing serious social impact. At present, the treatment technologies commonly used in China include thermal deoxidation method and ammonia addition method. These methods have improved ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a heating network anti-corrosion corrosion inhibitor and its preparation and use method to overcome the deficiencies of existing corrosion inhibitors and solve the perennial anti-corrosion problem of heating network