Production method and production device of diphenyl dichlorosilane

The invention discloses a production method and a production device of diphenyl dichlorosilane, and the method comprises the following steps: 1) introducing a gas-phase raw material dichlorosilane and a gas-phase diluent silicon tetrachloride into a reactor, introducing a gas-phase initiator trichloromethane into the reactor, and introducing a gas-phase raw material chlorobenzene into the reactor; and 2) heating, and reacting dichlorosilane with chlorobenzene in the reactor to generate diphenyl dichlorosilane, thereby obtaining a reaction product. According to the production method disclosed by the invention, chlorobenzene and dichlorosilane are used as raw materials, and the dichlorosilane is high in activity and small in relative steric hindrance in a high-temperature state, so that the reaction conversion rate is ensured, the reaction conversion rate is high, and the cost is reduced; according to the process, gas-gas reaction is adopted to replace existing solid-liquid reaction, the raw material conversion