A compound acid descaling and derusting cleaning agent

A rust-removing cleaning agent and acid technology, applied in the field of descaling and rust-removing agents, can solve the problems of secondary corrosion of metal surface, affecting the service life of equipment, incomplete cleaning, etc., to avoid microbial sludge, avoid insufficient cleaning time, Good cleaning effect

Active Publication Date: 2021-11-09
浙江康星科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2) Rust
However, there is a certain error in the judgment of the human eye. If the cleaning end point is not reached, the cleaning will not be complete; if the cleaning end point is passed, the metal surface will be corroded twice, which will affect the service life of the equipment.

Method used

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  • A compound acid descaling and derusting cleaning agent
  • A compound acid descaling and derusting cleaning agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: A kind of composite acidic descaling and descaling cleaning agent, with conventional mixing and agitating mode, the mass percentage is successively mixed with 19.9% ​​deionized water, 70% acid, 3% wetting agent, 0.1% color code indicator, 6 % complexing agent and 1% corrosion inhibitor are added into the mixing tank and mixed evenly to obtain a compound acidic descaling and descaling pickling agent.

[0034] By mass percentage, in the present embodiment:

[0035] The acid uses hydrochloric acid with a concentration of 31%, the complexing agent uses hydroxyethylidene diphosphonic acid, the corrosion inhibitor uses hexamethylenetetramine, the wetting agent uses LF901 surfactant, and the color code indicator uses methyl red.

Embodiment 2

[0036] Embodiment 2: A kind of composite acidic descaling and descaling cleaning agent, with conventional mixing and stirring mode, the mass percent is successively mixed with 19.9% ​​deionized water, 70% acid, 3% wetting agent, 0.1% color code indicator, 5 % complexing agent and 2% corrosion inhibitor are added into the mixing tank and mixed evenly to obtain a compound acidic descaling and descaling pickling agent.

[0037] By mass percentage, in the present embodiment:

[0038]The acid uses hydrochloric acid with a concentration of 31%, the complexing agent uses 2-phospho-1,2,4-tricarboxylic acid butane, the corrosion inhibitor uses thiourea, and the wetting agent uses Lutensol XL 80 surfactant, color code The indicator uses methyl red.

Embodiment 3

[0039] Embodiment 3: A kind of composite acidic descaling and descaling cleaning agent, the mass percentage is successively mixed with conventional mixing and stirring mode to be 65.4% deionized water, 25% acid, 3% wetting agent, 0.1% color code indicator, 5% % complexing agent and 1.5% corrosion inhibitor are added into the mixing tank and mixed evenly to obtain a compound acidic acid cleaning agent for descaling and rust removal.

[0040] By mass percentage, in the present embodiment:

[0041] The acid is sulfamic acid, the complexing agent is ethylenediamine tetramethylene phosphonic acid, the corrosion inhibitor is thiourea, the wetting agent is Plurafac LF221 surfactant, and the color code indicator is methyl red.

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Abstract

This application designs the technical field of descaling and descaling, and specifically discloses a composite acidic descaling and descaling cleaning agent. In terms of mass percentage, the composite acidic descaling and descaling cleaning agent includes 10%-50% of acid, complexing agent 5‑10%, 0.5‑2% corrosion inhibitor, 3‑10% wetting agent, 0.05‑2% color code indicator, and deionized water as the balance. The composite acidic descaling and descaling cleaning agent provided by the application has the advantage of quickly indicating whether the cleaning end point is reached, so that metal cleaning is complete.

Description

technical field [0001] The application relates to the technical field of descaling and rust removing agents, more specifically, it relates to a compound acidic descaling and rust removing cleaning agent. Background technique [0002] The cooling water system of the central air conditioner mainly relies on the cooling tower to dissipate heat. The water drips and splashes into countless small water droplets in the cooling tower or flows in the form of a film on the surface of the filler, fully in contact with the air, and removes a large amount of dust, microorganisms, and corrosive substances in the air. The gas is carried into the cooling water. In addition, due to the continuous evaporation, leakage and dispersion of water, the concentration of impurities in the water is also increasing, which will cause scaling on the contact surface of the system, which will easily cause coil blockage, corrosion of the unit and pipeline accessories, and affect the normal operation of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/06
CPCC23G1/06C23G1/061C23G1/065C23G1/068
Inventor 陈益锋张惠文
Owner 浙江康星科技有限公司
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