30,000 tons/year trichlorosilane project

30,000 tons/year trichlorosilane project

1.概述

Trichlorosilane is an important material with high added value，Used for the synthesis of organosilanes and alkyl, aryl and organofunctional group chlorosilanes，It is the most basic monomer in organosilane coupling agent，It is also the main raw material for the preparation of polysilicon，Trichlorosilane also has important applications in solar cells, glass fibers, reinforced resins, etc。

2.Market demand and forecast

Domestic trichlorosilane has developed rapidly in recent years。In particular, the rapid development of fine chemicals, electronic products, optical fiber communication and other industries has provided a huge market space and opportunities for the production of trichlorosilane and the development of downstream products。With the growth of the silicone industry and the rapid development of the solar cell industry, the demand for trichlorosilane will continue to grow。

3.Production scheme

3.1 Production process overview

At present, there are two main synthesis methods of trichlorosilane, boiling oxidation method and hydrogenation of tetrachlorosilane. The reaction conditions of hydrogenation of tetrachlorosilane require high temperature and high pressure, high energy consumption, and serious corrosion of equipment. At present, the main production method of trichlorosilane is boiling oxidation method。

3.2. Selection of process scheme

This project adopts the boiling oxidation method, which is prepared by the reaction of high-purity hydrogen chloride gas with monomer silicon at a certain temperature and pressure, mainly including the preparation of hydrogen chloride, synthesis of trichlorosilane, gas-solid separation, synthesis gas condensation, rectification and purification。

3.3 Process block diagram