Patent ID: 9416014
Filing Date: 2016-08-16
CPC Classification: B01J,C01B

Claim Text:
1. A method for producing trichlorosilane, using an apparatus comprising: a reaction vessel in which a supply gas containing silicon tetrachloride and hydrogen is supplied to produce a reaction product gas containing trichlorosilane and hydrogen chloride; a heating mechanism including a heater that heats the interior of the reaction vessel, encloses the reaction vessel, and heats the interior of the reaction vessel; wherein a reaction passageway is formed in the interior of the reaction vessel, in which a plurality of small spaces partitioned by a plurality of reaction tubular walls that have different inner diameters and are substantially concentrically disposed communicate by flow penetration sections formed alternately in lower portions and upper portions of the reaction tubular walls in order from the inside, and an outlet of the reaction passageway is at an outermost small space, a gas supply section which is in communication with the innermost small space of the plurality of small spaces that supplies the supply gas in the reaction vessel, and is formed only at a center of the reaction vessel; and a plurality of gas discharge sections which are connected to the outermost small space that discharges the reaction product gas from the reaction vessel to the outside, the gas supply section and the gas discharge sections are connected to the reaction passageway, and said method comprises a step of supplying gas from the gas supply section, moving the gas from the innermost small space of the plurality of small spaces to the outermost small space, and discharging gas from the gas discharge sections, with the flow direction of the gas repetitively changes between a downward direction and an upward direction every time the gas moves to the outside of the reaction passageway.