Cleaning composition and process capable of effectively removing scale and low in corrosivity

Abstract

The invention relates to the field of chemical water scale removal, and particularly discloses a cleaning composition and process capable of effectively removing scale and low in corrosivity. The cleaning composition capable of effectively removing scale and low in corrosivity is prepared from the following components in percentage by mass: 2.0 to 6.0 percent of inorganic acid, 0.1 to 0.8 percent of corrosion inhibitor, 0.03 to 0.09 percent of surfactant, 0.5 to 3.6 percent of ethanol and the balance of water. The cleaning process capable of effectively removing scale and low in corrosivity comprises the following steps: evenly mixing a corrosion inhibitor, a surfactant, ethanol and water and pumping into a to-be-cleaned system to be circulated evenly; and finally pumping inorganic acid into the to-be-cleaned system to be circulated till the water scale is removed. The cleaning composition and process have the advantages of high cleaning rate and low corrosion to aluminum copper pipes.

Description

Technical field [0001] The present application relates to the technical field of chemical clearance scale, and more particularly, it relates to a cleaning composition and process that can effectively descain and lower corrosive. Background technique [0002] As long as there is a water cycle, there will be mineral scale, these mineral scale deposition will cause increased energy consumption, resulting in economic losses, and even malignant explosions, these problems have been in various fields such as industrial, commercial, civil, military and other fields. Performance is very prominent. [0003] Among the seawater desalination equipment, aluminum brass as the main condensation pipe member, which will have a great influence on the seawater during scale. The main method of scale is currently cleaned with inorganic acid cleaning, organic acid cleaning and physics cleaning. Inorganic acid cleaning such as hydrochloric acid, amino sulfonic acid, low hydrochloric acid, has good desca...

AI Technical Summary

Problems solved by technology

Inorganic acid cleaning such as hydrochloric acid, sulfamic acid, hydrochloric acid has low cost and good descaling effect, but it is volatile, improper use will corrode and damage the equipment, and it is easy to rust again after cleaning; sulfamic acid is stable at room temperature, non-volatile, non-volatile Moisture absorption, can react with a variety of alkaline compounds and metal oxides, and has a good cleaning effect on copper pipes; cleaning with organic acids such as glycolic acid, formic acid, and oxalic acid is mild in acidity, safe for handling, but requires high temperature cleaning, high cost, and poor descaling power ;Physical cleaning is difficult for equipment with complex structure and insoluble hard scale, and may cause local damage

It is difficult to ensure a high cleaning rate and less corrosion to aluminum and copper pipes

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