C - Chemistry – Metallurgy – 10 – B
Patent
C - Chemistry, Metallurgy
10
B
48/37
C10B 53/02 (2006.01)
Patent
CA 1241541
ABSTRACT OF THE INVENTION A pyrolysis process for organic material uses a fluidized bed reactor containing sand as an inert material. Particulate organic material is introduced into the reactor together with a gas stream that is utilized to fluidize said bed. The sand particles and the organic material are sized relative to one another and the fluidized bed is operated at a gas flow rate so that substantially all char resulting from the pyrolysis of the organic material is removed from the reactor by the gas stream through the gas outlet. Substantially all of the sand remains in the reactor and the desired pyrolysis products so formed can be further processed for recovery. The sand can be heated by suitable heat transfer surfaces to provide heat for the reaction or reaction heat can be provided by treating the fluidizing gas, or both. A reactor for use in the process has a housing, a suitable inert particulate solid material contained therein together with a bed to be fluidized. The reactor has a gas inlet and a gas outlet with means to operate the fluidized bed. In previous pyrolysis processes for organic material, the inert material is removed to a second reaction vessel along with the char. In the second vessel, the char can be burned to heat the inert material and the inert material is then returned to the first reaction vessel. With the present invention, it is not necessary to remove the sand from the reaction vessel.
436910
Schnurr Daryl W.
Scott Donald S.
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