Hydrogen reduction unit

Abstract

The invention relates to a hydrogenation reduction device. The hydrogenation reduction device comprises a reaction quartz tube horizontally arranged, a heating sleeve for heating the reaction quartz tube, an evaporation kettle, and an air inlet pipe; the reaction quartz tube comprises a reaction section and a deposition section; the reaction section comprises a charging area and a buffer area; thebuffer area is adjacent to the deposition section; the heating sleeve comprises a first heating area, a second heating area and a third heating area; the first heating area, the second heating area and the third heating area correspondingly cover the charging area, the buffer area and the deposition section; a reduction pipe is fixed in the charging area; one end of the air inlet pipe is insertedinto the reduction pipe; the other end of the air inlet pipe is bifurcated into a first branch pipe and a second branch pipe; the first branch pipe communicates with the evaporation kettle; and the second branch pipe communicates with a hydrogen air inlet and a nitrogen air inlet. The hydrogenation reduction device is high in single-furnace capacity, high in reaction conversion rate and simple tooperate.

Description

technical field [0001] The invention relates to the field of high-purity arsenic preparation, in particular to a hydrogenation reduction device for preparing high-purity arsenic by using arsenic trichloride. Background technique [0002] High-purity arsenic is the main raw material for the synthesis of semiconductor compounds such as gallium arsenide, indium arsenide, and arsenic selenide. These semiconductor compounds are widely used in integrated circuits, photovoltaic solar power generation, Hall elements and other fields. In recent years, with the development of high-tech industries, the application fields of high-purity arsenic have become increasingly extensive, and the demand is increasing. There are many preparation methods for high-purity arsenic, among which the hydrogenation reduction method is a common method for producing high-purity arsenic, please refer to a hydrogenation reduction device for high-purity arsenic production and a high-purity arsenic preparatio...

AI Technical Summary

Problems solved by technology

There are many preparation methods for high-purity arsenic, among which the hydrogenation reduction method is a common method for producing high-purity arsenic, please refer to a hydrogenation reduction device for high-purity arsenic production and a high-purity arsenic preparation method proposed in Chinese patent application CN201510425035.4 , but the hydrogenation reduction device used in this technical solution still has technical problems such as low output per unit, long production cycle, and low reduction conversion rate.

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