A kind of composite corrosion inhibitor and its preparation method and application
A technology of corrosion inhibitor and auxiliary agent, applied in the field of compound corrosion inhibitor and its preparation, can solve the problem of easy corrosion of metal materials, and achieve the effects of obvious synergy, simple operation and high corrosion inhibition efficiency
Inactive Publication Date: 2016-03-30
北京龙飞恒信科技有限公司
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However, metal materials are extremely prone to corrosion, and the damage is very serious.
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[0018] The preparation method of the compound corrosion inhibitor of the present invention includes raw material preparation and preparation steps, specifically including:
[0019] A. Raw material preparation: prepare raw materials 5-mercapto-1-tetrazolium sodium acetate, 5-iodouracil, surfactant, auxiliary agent and pickling solution;
[0020] B. Preparation: Add 5-mercapto-1-tetrazolium sodium acetate, 5-iodouracil, surfactants, and auxiliary agents into the pickling solution according to the ratio of raw materials, stir and mix evenly to obtain the target product.
[0021] The application of the present invention is the application of the compound corrosion inhibitor in the preparation of cleaning agents for steel, aluminum, petrochemical equipment, filtration and pipelines.
[0022] The present invention overcomes the shortcomings of existing corrosion inhibitor compounded organic corrosion inhibitor systems and the insufficient corrosion inhibition effect. However, the N-...
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Abstract
The invention discloses a compound corrosion inhibitor and its preparation method and application. The compound corrosion inhibitor includes 0.1-2 g / L of sodium 5-mercapto-1-tetrazolium acetate and 0.1-2 g / L of 5-iodouracil. 2.0g / L, surfactant 0.11~0.25g / L, auxiliary agent 0.05~0.1g / L, and the balance is pickling solution. The method includes raw material preparation and preparation steps; the application is the application of the compound corrosion inhibitor in the preparation of steel, aluminum, petrochemical equipment, filtration and pipeline cleaning agents. The invention is based on sodium 5-mercapto-1-tetrazolium acetate and 5-iodouracil, and the pickling corrosion inhibitor prepared by adding surfactants and auxiliary agents has significant synergistic effect. The invention has the advantages of high corrosion inhibition efficiency, obvious synergistic effect, strong adaptability, and good aftereffect, and obviously inhibits the corrosion effect of acid on steel, and can be applied to pickling steel in inorganic acid and organic acid, and can be applied to For the cleaning of petrochemical equipment, boilers and pipelines, the corrosion inhibitor of the present invention is convenient, safe, simple to operate and quick in effect.
Description
technical field [0001] The invention belongs to the technical field of metal corrosion inhibitors, and in particular relates to a composite corrosion inhibitor and its preparation method and application. Background technique [0002] Metal materials occupy a very important position in modern industry and agriculture, machinery, transportation, national defense and science and technology. Steel has the advantages of low price, good machining performance, and large output. It is the first metal to be considered in the process of material selection and use, and it is also one of the most widely used metals at present. However, metal materials are extremely prone to corrosion, and the damage is very serious. It is estimated that the amount of iron and steel scrapped due to corrosion is equivalent to 1 / 4-1 / 3 of the annual output in the world every year; the annual loss caused by corrosion accounts for 3.1%-4.5% of the gross domestic product (GDP). The annual corrosion loss in m...
Claims
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IPC IPC(8): C23G1/06
Inventor 李向红邓书端付惠
Owner 北京龙飞恒信科技有限公司