03977947 is referenced by 28 patents and cites 13 patents.

A continuous process is described whereby particulate woody materials are carbonized in a fluidized bed to form solid and gaseous fuel. The process includes injecting particulate woody materials, on a continuous basis, into a fluidized bed of previously carbonized material. Off-gas from carbonization with entrained charcoal fines is continuously removed from above the bed, and coarse charcoal is continuously removed from the surface of the bed. If desired, a high ash, coarse fraction may also be continuously removed from immediately above the bed grid. The off-gas and entrained fine charcoal are separated in a cyclone system, and the charcoal fines with the coarse charcoal fraction from the bed surface are collected for use as solid fuel. Off-gas from the separator may be scrubbed, if desired, or utilized directly as an enriched gaseous fuel. Alternate embodiments of the apparatus of this invention include an oval-shaped bed, or a toroidal bed with a plurality of feeders disposed at preselected positions extending into the bed to maximize the efficiency of the bed.

Title
Fluidized bed carbonization
Application Number
271795
Publication Number
3977947
Application Date
May 25, 1973
Publication Date
August 31, 1976
Inventor
Owen Pyle
Anchorage
KY, US
Agent
LeBlanc & Shur
Assignee
The Kingsford Company
KY, US
IPC
C10J 3/00
C10B 1/04
C10B 21/18
C10B 47/00
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