A cleaning composition and process capable of effective descaling and less corrosive
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A cleaning composition and a corrosive technology, applied in the field of cleaning compositions, can solve the problems of secondary rust; sulfamic acid is stable at room temperature, non-volatile, non-hygroscopic, damaged, difficult to ensure cleaning rate and the like
Active Publication Date: 2022-05-17
河北电力长凯工贸有限公司
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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
Method used
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Embodiment 1
[0036] A cleaning composition capable of effective scale removal and less corrosive, comprising the following components: 2.0Kg of inorganic acid, 0.8Kg of corrosion inhibitor, 0.03Kg of surfactant, 3.6Kg of ethanol, and 93.57Kg of water.
[0037] Wherein, inorganic acid is sulfamic acid;
[0038] The corrosion inhibitor includes imidazoline quaternary ammonium salt, benzotriazole, and thiazole, and the weight ratio of imidazoline quaternary ammonium salt, benzotriazole, and thiazole is 1:0.3:0.6;
[0039] Surfactant is OP-15.
[0040] A cleaning process that is effective in descaling and less corrosive, comprising the steps of:
[0041] First dissolve the corrosion inhibitor and surfactant in ethanol to obtain a solution, then mix the solution with water and pump it into the system to be cleaned for uniform circulation, and finally pump the inorganic acid into the system to be cleaned for circulation. until the scale is removed.
Embodiment 2
[0043] The difference with Example 1 is:
[0044] A cleaning composition capable of effective scale removal and less corrosive, comprising the following components: 3.0Kg of inorganic acid, 0.5Kg of corrosion inhibitor, 0.04Kg of surfactant, 2.6Kg of ethanol, and 93.86Kg of water.
Embodiment 3
[0046] The difference with Example 1 is:
[0047] A cleaning composition capable of effective scale removal and less corrosive, comprising the following components: 4Kg of inorganic acid, 0.3Kg of corrosion inhibitor, 0.05Kg of surfactant, 1.4Kg of ethanol, and 94.25Kg of water.
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Abstract
This application relates to the field of chemical scale removal, and specifically discloses a cleaning composition and process that can effectively remove scale and is less corrosive, and a cleaning composition that can effectively remove scale and is less corrosive, in terms of mass percentage , including the following components: inorganic acid 2.0-6.0%, corrosion inhibitor 0.1-0.8%, surfactant 0.03-0.09%, ethanol 0.5-3.6%, and the balance is water; The low-level cleaning process includes the following steps: mix the corrosion inhibitor, surfactant, ethanol and water and pump them into the system to be cleaned for uniform circulation, and finally pump the inorganic acid into the system to be cleaned for circulation until scale Cleared. It has the advantages of high cleaning rate and low corrosion to aluminum and copper pipes.
Description
technical field [0001] This application relates to the technical field of chemical scale removal, more specifically, it relates to a cleaning composition and process which can effectively remove scale and have low corrosion. Background technique [0002] As long as there is water circulation, there will be mineral scale. These mineral scale deposits will increase energy consumption and material consumption, cause economic losses, and even vicious explosions. These problems have been widely used in various fields such as industry, commerce, civilian use, and military use. Behaved very well. [0003] In seawater desalination equipment, aluminum brass is used as the main condensing pipe fitting, and its scale will have a great impact on the seawater desalination process. At present, the main methods for removing scale include inorganic acid cleaning, organic acid cleaning and physical cleaning. Inorganic acid cleaning such as hydrochloric acid, sulfamic acid, hydrochloric aci...
Claims
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