Patent ID: 8372346

Claim:
An apparatus for producing trichlorosilane from a raw material gas containing silicon tetrachloride and hydrogen, the apparatus comprising: a reaction chamber which is supplied with the raw material gas in order to produce a reaction gas containing trichlorosilane and hydrogen chloride; and heaters provided in the reaction chamber, wherein an internal space of the reaction chamber is partitioned into a plurality of cells in a radial direction by first walls running along a circumferential direction, at least one of the cells formed by the first walls is partitioned into a plurality of cells by second walls which extend in a direction crossing the circumferential direction, the internal space of the reaction chamber is formed with small cells partitioned between the first walls and/or small cells partitioned by the first walls and the second walls, the small cell is brought into a communication state so as to circulate the raw material gas toward a central portion of the reaction chamber while the direction of flow thereof is changed by turning up and down the raw material gas by a communication portion formed at upper portions or lower portions of the first walls and/or the second walls which partition the small cells, the heaters are installed in at least one of the small space, and small cells for upward flow passages and small cells for downward flow passages are made to communicate with each other in the circumferential direction by the communication portion formed in the second walls.