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Neutral cleaning agent for mixed water scale and production method thereof

A neutral cleaning agent and scale technology, which is applied in chemical instruments and methods, complex/solubilizer treatment, detergent compositions, etc. The effect of reducing maintenance costs and risks and avoiding damage

Inactive Publication Date: 2011-01-26
金宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing agents have no way to completely remove some insoluble scales at the same time, such as calcium sulfate scale, carbonate scale, silicate scale, etc., as well as the mixed scale of these scales, which has always been a problem for chemical cleaning of scale. big problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 5% of hydroxyethylene diphosphonic acid, 3% of citric acid, 1% of non-ionic polyacrylamide, and 2% of hydrogen fluoride in the following weight ratios, mix well and then slowly add 0.5-1% of NaOH to adjust the pH Adjust the value to 7, then add 0.05% of 6501 degreasing agent, and add water to the remaining weight ratio to complete the preparation of the cleaning agent.

Embodiment 2

[0024] Take 8% of hydroxyethylene diphosphonic acid, 5% of citric acid, 0.6% of nonionic polyacrylamide, and 1.5% of hydrogen fluoride in the following weight ratios, mix well and then slowly add 0.5-1% of NaOH to adjust the pH Adjust the value to 7, then add 0.05% of 6501 degreasing agent, and add water to the remaining weight ratio to complete the preparation of the cleaning agent.

Embodiment 3

[0026] Take 10% of hydroxyethylene diphosphonic acid, 3% of citric acid, 0.3% of non-ionic polyacrylamide, and 1% of hydrogen fluoride in the following weight ratios, mix well and then slowly add 0.5-1% of NaOH to adjust the pH Adjust the value to 7, then add 0.05% of 6501 degreasing agent, and add water to the remaining weight ratio to complete the preparation of the cleaning agent.

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PUM

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Abstract

The invention relates to a chemical cleaning agent, in particular to a neutral cleaning agent special for cleaning the mixed water scale and a production method thereof. The invention provides a novel cleaning agent for treating the mixed water scale and a method thereof. In the actual application, the neutral cleaning agent can be used for effectively cleaning the mixed water scale on a boiler or an industrial cooling circular water system thoroughly during parking or not parking and cannot corrode metal. The neutral cleaning agent comprises the following raw materials in percentage by weight: 5-10 percent of 1-hydoxy ethyidene-1,1-diphosphonic acid, 3-8 percent of citric acid, 0.3-1 percent of nonionic polyacrylamide, 1-2 percent of hydrogen fluoride, 0.5-1 percent of NaOH, 0.05 percent of 6501 degreasing agent and the balance of water. The agent is the cleaning agent special for the mixed water scale, is special for clearing the indissolvable scale in the mixed water scale, has the pH value of the medicament of 7, is a neutral solution, can thoroughly clean the scale without corroding metal, enamel and glass and is nontoxic to human body; and waste liquid can be safely discharged, is high-efficient and safe and avoids the phenomenon of hydrogen embrittlement.

Description

technical field [0001] The invention relates to a chemical cleaning agent, in particular to a neutral chemical cleaning agent for cleaning mixed scale. Background technique [0002] In daily industrial production, boiler water and industrial circulating cooling water are continuously circulated and concentrated during use, and the mineral content in the water will continue to increase, which will cause scaling and corrosion of equipment pipes. Once the equipment is scaled, it will greatly reduce the heat exchange efficiency, reduce the cooling effect, corrode the equipment, shorten the service life of the equipment, and endanger the safety of production. Therefore, the boiler and circulating cooling water system must be cleaned regularly. The common types of scale are carbonate scale, sulfate scale, silicate scale, mixed scale and so on. [0003] At present, in the chemical cleaning process of boilers and industrial circulating cooling water systems, the method of adding c...

Claims

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Application Information

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IPC IPC(8): C11D7/36C11D7/26C11D7/32C11D7/60C02F5/08
Inventor 金宏
Owner 金宏
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