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Sulfur removal method of anhydrous hydrofluoric acid

A technology of anhydrous hydrofluoric acid and sulfuric acid, applied in hydrogen fluoride, fluorine/hydrogen fluoride, etc., can solve the problems of increasing maintenance costs, reducing enterprise benefits, and hidden dangers in production, and achieving the effects of reducing impurities, increasing cleanliness, and increasing gas density

Inactive Publication Date: 2018-12-18
浙江森田新材料有限公司
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AI Technical Summary

Problems solved by technology

It solves the problem of the generation of sulfur vapor in the production process of the existing anhydrous hydrofluoric acid. As the temperature of the furnace gas becomes lower, it condenses in the pipeline and equipment, causing blockage accidents, bringing hidden dangers to production, and increasing maintenance. costs, reducing business efficiency issues

Method used

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  • Sulfur removal method of anhydrous hydrofluoric acid
  • Sulfur removal method of anhydrous hydrofluoric acid
  • Sulfur removal method of anhydrous hydrofluoric acid

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Embodiment Construction

[0043] Such as Figure 1 to Figure 5 Shown, be the sulfur removal method of a kind of anhydrous hydrofluoric acid of the present invention, comprise the steps:

[0044] 1) Preparation of hydrofluoric acid gas

[0045] a. Wash the fluorite with water, wash away the sundries on the surface, and after drying, use a vibrator to evenly add it to the pulverizer and crush it into powder;

[0046]b. Put the pulverized fluorite powder and sulfuric acid into the reaction furnace, the concentration of sulfuric acid is 98%, heat, and react to obtain crude hydrogen fluoride gas;

[0047] 2) Dust removal of gas

[0048] a, the crude hydrogen fluoride gas is passed to the filter screen 1, and the gas passes through the filter screen 1 and is blown to the first air intake pipe 2 by the rotating fan 39;

[0049] b. Crude hydrogen fluoride gas enters the dust washing tower 3 through the first air inlet pipe 2, heats the heating tank plate 7 in the dust washing tower 3, increases the internal...

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Abstract

The invention discloses an electric water heater for spraying and an installation method thereof. The method comprises the steps of: 1) preparation of hydrofluoric acid gas; 2) dedusting of gas; 3) sulfur removal of gas; 4) condensation; and 5) cleaning of a desulfurization device. According to the invention, an adjustable desulfurization device is disposed inside a coarse distillation tower for sulfur removal of crude hydrogen fluoride gas, and the sulfur removal efficiency is increased. The method provided by the invention solves the problem that in the existing preparation process of anhydrous hydrofluoric acid, along with the decrease of the furnace gas temperature, the produced sulfur steam can agglutinate in pipelines and equipment, thus resulting in blocking accidents, bringing hidden dangers to production, increasing the maintenance cost and lowering enterprise benefits.

Description

technical field [0001] The invention relates to a sulfur removal method of anhydrous hydrofluoric acid. Background technique [0002] Anhydrous hydrofluoric acid is the most basic raw material of modern fluorine chemical industry, and the market demand is huge. Exploring green and sustainable hydrogen fluoride production technology has great significance and far-reaching influence on the sustainable development of society. Anhydrous hydrofluoric acid is produced by heating and reacting fluorite powder and sulfuric acid in a rotary furnace to generate crude hydrogen fluoride gas. The crude product is washed, cooled, condensed, rectified, and degassed to obtain anhydrous hydrofluoric acid product. [0003] In the process of anhydrous hydrofluoric acid, due to the generation of sulfur vapor, as the temperature of the furnace gas decreases, it condenses in the pipelines and equipment, resulting in blockage accidents, bringing hidden dangers to production, increasing maintenance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B7/19
CPCC01B7/195C01B7/192
Inventor 何志国章志诚秦兴
Owner 浙江森田新材料有限公司
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