Fluid bed reactor and process

Details Fluid bed reactor and process Fluid bed reactor and process

C - Chemistry, Metallurgy

01

B

23/183, 23/389

C01B 33/023 (2006.01) B01J 8/18 (2006.01) B01J 8/24 (2006.01) C01B 33/027 (2006.01) C01B 33/029 (2006.01)

Patent

CA 1303816

Abstract of the Disclosure FLUID BED REACTOR AND PROCESS Undesirable conversion of a silicon source, such as silane, in the freeboard above a fluidized bed of silicon particles in a fluidized bed reactor, can be reduced by cooling the gas within the freeboard. Preferably, the reduction in temperature is achieved by introducing into the freeboard a stream of relatively cool quench gas such as hydrogen, which also reduces the concentration of silane in the freeboard. As a result of these two factors, the invention improves the service factor of the fluidized bed apparatus and reduces the amount of silane conversion to undesired by-products.

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