Reaction device

Abstract

The present invention provides a reaction device which, even if a reaction vessel is deformed by thermal expansion or thermal contraction, makes it possible to prevent impairment of normal operation due to said deformation. Provided is a reaction device (10A), said reaction device (10A) comprising: a cylindrical reaction vessel (100) that includes an intermediate part (A3) between a supply part and a send part; a temperature control part that controls the temperature of the intermediate part; the supply part; the send part; and a conveyance mechanism that conveys an object to be treated from the supply part side to the send part side via the intermediate part, wherein the temperature control part controls the rate of temperature increase or the rate of temperature decrease of the intermediate part such that the actual displacement rate of a specific part (E) of the reaction vessel conforms to a desired displacement rate of the specific part of the reaction vessel.