Patent ID: 7875249

Claim:
A reactor-integrated syphon provided between a downcomer and a high-speed layer for sealing fluidization of gas between the downcomer and the high-speed layer through temporary storage of particles moving from the downcomer to the high-speed layer, said reactor-integrated syphon comprising: a reactor portion for causing the solid reactant to conduct chemical reaction through action of said particles, a downcomer seal portion in communication, at upper and lower ends thereof, with said downcomer and a lower portion of said reactor portion, respectively, for circulating said particles from said downcomer into said reactor portion, a particle outlet seal portion provided in a spaced apart relationship from said downcomer seal portion and in communication, at upper and lower ends thereof, with said high-speed layer and said lower portion of said reactor portion, respectively, for circulating said particles from said reactor portion into said high-speed layer, a freeboard portion formed above said reactor portion for further acceleration of the reaction of gas resulting from said chemical reaction of said solid reactant, and a produced gas take-out port for taking out the produced gas from said freeboard portion, the reactor-integrated syphon further comprising a pressure controller arranged downstream of said produced gas taken-out port for controlling pressure difference between the pressures in the reactor and particle outlet seal portions, transportation amount of said particles being adjusted through control of the pressure difference by said pressure controller.