Hydrogenation reduction device for high-purity arsenic production and high-purity arsenic preparing method

Abstract

The invention belongs to the field of high-purity arsenic and particularly relates to a hydrogenation reduction device for high-purity arsenic production and a high-purity arsenic preparing method. The hydrogenation reduction device for high-purity arsenic production comprises a hydrogenation reduction pipe. A feed pipe is arranged at the feed end of the hydrogenation reduction pipe. A reaction section and a deposition section are arranged inside the hydrogenation reduction pipe in sequence in the airflow advancing direction. A partition board with a hole is arranged at the air outlet end of the reaction section. A return pipe with an opening facing the feed end of the hydrogenation reduction pipe is arranged on the reaction section. The return pipe is fixed to the partition board. The discharge end of the feed pipe stretches into the return pipe. The air outlet end of the deposition section is located at the air outlet end of the hydrogenation reduction pipe. According to the hydrogenation reduction device for high-purity arsenic production, the return pipe is arranged on the reaction section of the hydrogenation reduction pipe, in this way, the contact duration of arsenic trichloride and hydrogen is prolonged, the purity of products is improved, and the yield of the products is increased.

Description

technical field [0001] The invention belongs to the field of high-purity arsenic, and in particular relates to a hydrogenation reduction device for high-purity arsenic production and a high-purity arsenic preparation method. Background technique [0002] High-purity arsenic is a kind of high-purity (purity greater than 99.999%) arsenic, which is silver-gray metal crystal, brittle and hard, with metallic luster, easy to oxidize in humid air, and is a toxic product. High-purity arsenic is mainly used to prepare semiconductor compounds and high-purity alloys such as gallium arsenide, gallium aluminum arsenide, and indium arsenide. , has quite a wide range of uses. Gallium arsenide is the second-generation semiconductor material after monocrystalline silicon. It is currently the most important and most promising compound semiconductor material. It is also the most extensively studied and widely used semiconductor material by scientists. Gallium arsenide is widely used in the p...

AI Technical Summary

Problems solved by technology

However, due to the small market demand, the high-purity arsenic industry did not achieve great development. Until the end of the last century, with the continuous discovery of special properties such as high-strength corrosion resistance and high electron migration of gallium arsenide, gallium arsenide was widely used. The importance of high-purity arsenic is widely recognized in the fields of optoelectronics and microelectronics such as optical fiber communication, mobile communication, space technology, aerospace, and military affairs, and the high-purity arsenic industry is also booming.

Images