Patent ID: 8187552
Filing Date: 2012-05-29
Classification: B01J,C01B,Y02E

Abstract:
1. An apparatus for producing trichlorosilane which decomposes polymer containing high boiling point chlorosilanes generated in a polycrystalline silicon producing process, in a trichlorosilane producing or in a converting process, thereby producing trichlorosilane, the apparatus comprising: a decomposing furnace reacting a hydrogen chloride with the polymer at high temperatures for producing trichlorosilane; a heating unit heating the inside of the decomposing furnace; a raw material supplying tube for guiding the polymer and the hydrogen chloride to the inner bottom portion of the decomposing furnace along the longitudinal direction of the decomposing furnace and supplying to the decomposing furnace through a lower end opening of the raw material supplying tube; a reaction chamber provided between the outer peripheral surface of the raw material supplying tube and the inner peripheral surface of the decomposing furnace; a gas discharge tube for discharging reaction gas from the top of the reaction chamber; and a fin which guides the polymer and the hydrogen chloride supplied from the lower end opening of the raw material supplying tube to be agitated and rise upward and is formed integrally with at least one of the outer peripheral surface of the raw material supplying tube or the inner peripheral surface of the decomposing furnace, wherein a polymer supplying system and a hydrogen chloride supplying system are connected to an upper section of the raw material supplying tube which protrudes outward from the decomposing furnace, and an agitating member having a second fin is inserted into the raw material supplying tube.