Recycle classifier for retorting oil shale

Details Recycle classifier for retorting oil shale Recycle classifier for retorting oil shale

1982-08-30

1984-04-03

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

201 31, C10G 102, C10B 5306, C10B 4916

Patent

active

044406231

ABSTRACT:
Heat transfer particles of fluidizable size are selected for recycling to the pyrolysis zone to broaden usable size range of oil shale feed. These recycle particles should all be of a fluidizable size and when mixed with the raw oil shale the total amount of fluidizable particles should comprise not less than about 60 weight percent of the particles in the mixture. This process is especially useful when the heat transfer material is recycled oil shale particles. The present invention is particularly advantageous when the oil shale is pyrolyzed in a vertical retorting vessel containing a fluidized bed above a packed bed of particles.

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"Shale Oil Retorting Process Promising", C & E News, Sep. 15, 1980.

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