Stabilizing thermally beneficiated carbonaceous material

Details Stabilizing thermally beneficiated carbonaceous material Stabilizing thermally beneficiated carbonaceous material

2005-04-12

2005-04-12

Toomer, Cephia D. (Department: 1714)

Fuel and related compositions

Coal treating process or product thereof

C044S626000

Reexamination Certificate

active

06878174

ABSTRACT:
A method of stabilizing a thermally beneficiated carbonaceous material is disclosed. The method includes the steps of supplying a charge of the carbonaceous material at an elevated temperature to a process vessel to form a packed bed and cooling the carbonaceous material to a target temperature by indirect heat exchange. The method is characterised by supplying an oxygen-containing gas to the packed bed to partially oxidise the carbonaceous material to a required degree to stabilize the carbonaceous material prior to the carbonaceous material reaching the target temperature. The method is also characterised by removing heat from the packed bed that is produced by oxidation of carbonaceous material to control the temperature of the carbonaceous material during oxidation to avoid thermal runaway.

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patent: 6090171 (2000-07-01), Viall et al.
patent: WO 9117391 (1991-11-01), None
Australian Patent Abstract, document No. AU-A-41497/93 entitled: Fluidized Bed Reactor for Cooling or Heating Granular Solids by an Indirect Heat Exchange; 12 pages, 1993.

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