Oil shale retorting process utilizing indirect heat transfer

Details Oil shale retorting process utilizing indirect heat transfer Oil shale retorting process utilizing indirect heat transfer

1982-03-19

1984-07-10

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 8R, C10G 100, C10B 5306

Patent

active

044592019

ABSTRACT:
Carbon-containing solids such as oil shale or coal are pyrolyzed or retorted in an apparatus constructed in such a manner that the heat required for pyrolysis is supplied by burning residual organic material in the pyrolyzed solids in an external combustion zone and in an internal combustion zone that is situated with respect to the pyrolysis or retorting zone such that the heat of combustion is transferred through the walls of the internal combustion zone into the pyrolysis or retorting zone. The pyrolyzed solids are passed from the retorting zone to either the external combustion zone or the internal combustion zone wherein a portion of the organic material in the solids is burned. The partially burned solids exiting this zone are then passed to either the external combustion zone or the internal combustion zone where all or a portion of the remaining organic material is burned. The heat carried into the internal combustion zone with the hot solids produced by burning the organic material in the external combustion zone and the heat of combustion produced in the internal combustion zone are transferred through the walls of the internal combustion zone to supply substantially all or a major portion of the heat required to pyrolyze the carbon-containing feed solids in the retorting zone. None of the solids or flue gases produced in either the internal combustion zone or the external combustion zone are passed directly into the retorting zone.

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Wigton, Henry Ford Harding, "Continuous Carbonization and Combustion of Oil Shale Using a Fluidized System, " Doctoral Thesis, University of Colorado, 1952.
Oil Shale Retorting Process and Apparatus, James M. Eakman, U.S. Ser. No. 336,739.

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