A nitric acid fog inhibitor and a preparing method thereof

A technology of fog suppressant and nitric acid, applied in the field of nitric acid fog suppressant and its preparation, can solve problems such as complex proportioning, and achieve the effects of small dosage, reduced component usage, and reduced pollution

Active Publication Date: 2019-01-15
泉州罕韩环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corrosion inhibitors include triethanolamine, sulfonamide, gelatin, oxalic acid, acetic acid, citric acid, trisodium citrate, ammonium formate or triammonium citrate, and the ratio is relatively complicated

Method used

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  • A nitric acid fog inhibitor and a preparing method thereof
  • A nitric acid fog inhibitor and a preparing method thereof
  • A nitric acid fog inhibitor and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A nitric acid fog suppressant, comprising the following components in terms of mass percentage: 12.0% of soda ash, 0.8% of OP-10, 6.4% of sodium disulfide, 0.8% of thiourea, 2.4% of sodium dodecylbenzenesulfonate, and The amount is deionized water or purified water. The preparation method comprises the following steps: sequentially adding soda ash, OP-10, sodium disulfide, thiourea and sodium dodecylbenzenesulfonate into a reactor, then slowly adding water and stirring until all are dissolved to obtain the product.

Embodiment 2

[0023] A nitric acid fog suppressant, comprising the following components in terms of mass percentage: 13.5% of soda ash, 0.9% of OP-10, 7.2% of sodium disulfide, 0.9% of thiourea, 2.7% of sodium dodecylbenzenesulfonate, and The amount is deionized water or purified water. The preparation method comprises the following steps: sequentially adding soda ash, OP-10, sodium disulfide, thiourea and sodium dodecylbenzenesulfonate into a reactor, then slowly adding water and stirring until all are dissolved to obtain the product.

Embodiment 3

[0025] A nitric acid fog suppressant, comprising the following components in terms of mass percentage: 15.0% of soda ash, 1.0% of OP-10, 8.0% of sodium disulfide, 1.0% of thiourea, 3.0% of sodium dodecylbenzenesulfonate, and The amount is deionized water or purified water. The preparation method comprises the following steps: sequentially adding soda ash, OP-10, sodium disulfide, thiourea and sodium dodecylbenzenesulfonate into a reactor, then slowly adding water and stirring until all are dissolved to obtain the product.

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PUM

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Abstract

The invention belongs to the technical field of metal material surface treatment and particularly relates to a nitric acid fog inhibitor and a preparing method thereof. The fog inhibitor includes, bymass, 12.0-18.0% of sodium carbonate, 0.8-1.2% of an emulsifier, 6.4-9.6% of sodium sulphate, 0.8-1.2% of thiourea and 2.4-3.6% of a surfactant, with the balance being water. The method includes adding the sodium carbonate, the emulsifier, the sodium sulphate, the thiourea and the surfactant into a reactor in order, then slowly adding water, and stirring the materials until all the materials are dissolved. The fog inhibitor prepared from the raw materials and by the method can meet demands on nitric acid fog inhibition in the steel acid pickling industry, and effectively avoid steel loss and waste of acid pickling liquid which are caused by overpickling.

Description

technical field [0001] The invention belongs to the technical field of metal material surface treatment, and in particular relates to a nitric acid fog suppressant and a preparation method thereof. Background technique [0002] Pickling is commonly used in machinery, chemical industry, metallurgy and other industries to remove rust, scale and rolling scale on the surface of metal materials and equipment. Pickling acids include sulfuric acid, hydrochloric acid, nitric acid, and mixed acids of sulfuric acid and hydrochloric acid. During the pickling process of metals, a large amount of acid mist will be generated. These acid mist will not only cause environmental pollution, but also corrode the surrounding workshop equipment and facilities, and even affect human health. Pickling will inevitably corrode the metal. In order to improve the quality of the metal after pickling, reduce the defects of the metal surface, protect the material of the equipment, and prolong the service ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/04
CPCC23G1/04
Inventor 宋春雷
Owner 泉州罕韩环保科技有限公司
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