Patent ID: 8226895

Claim:
A reaction apparatus for producing trichlorosilane in which metal silicon powder is reacted with hydrogen chloride gas to generate trichlorosilane, comprising: an apparatus body into which the metal silicon powder is supplied; an ejection port for ejecting the hydrogen chloride gas into the apparatus body, which is opened on the upper face of a partition plate partitioning the bottom part of the apparatus body; a mixture layer disposed on the upper side of the ejection port in which a plurality of plate-shaped holed pieces having a through hole penetrating in the thickness direction and a plurality of ball members are stacked in a mixed state; and metal silicon powder supplied on the upper side of the mixture layer, wherein the ball members are interposed between the plate-shaped holed pieces, and the ball members and the plate-shaped holed pieces are mixed so as to give a mixture ratio of W 1 /W 2 =0.5 to 5 where a weight of ball members is expressed as W 1 and a weight of the plate-shaped holed pieces is expressed as W 2 .