Gasification method and apparatus for lignocellulosic products

Details Gasification method and apparatus for lignocellulosic products Gasification method and apparatus for lignocellulosic products

1983-11-07

1986-02-04

Woo, Jay H.

Gas: heating and illuminating

Processes

Wood

201 25, 201 12, 201 31, C10B 4922, C10J 354

Patent

active

045683620

ABSTRACT:
The rapid pyrolysis of lignocellulosic products, especially forest waste, is conducted in a fluidized bed of hot refractory particles. The pyrolysis products, comprising solid carbonaceous residue (i.e., char), tars and gas, escape from the bed and cross an overheating zone comprising a packed bed contactor supplied by a rainfall of hot refractory particles. The carbonaceous solid residue is then separated from the produced gases, a portion of which is recycled to fluidize the bed, and burned in a conveyed bed combustion reactor, thus heating the refractory particles that supply the packed bed contactor and the fluidized bed.

REFERENCES:
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patent: 3853498 (1974-12-01), Bailie
patent: 4157245 (1979-06-01), Mitchell et al.
patent: 4183800 (1980-01-01), Mitchell et al.
patent: 4230602 (1980-10-01), Bowen et al.
patent: 4243510 (1981-01-01), Dhondt
patent: 4320795 (1982-03-01), Gwyn et al.
patent: 4402823 (1983-09-01), Bertelsen

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