Process for recovery of different weight fractions of oil from s

Details Process for recovery of different weight fractions of oil from s Process for recovery of different weight fractions of oil from s

1981-12-31

1983-09-20

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

201 32, C10G 100, C10B 5300

Patent

active

044054386

ABSTRACT:
An oil shale retorting method and apparatus moves a bed of oil bearing shale particles along a generally horizontal path and passes through the bed at spaced points a plurality of discrete nonoxidizing gas streams heated to different oil educting temperatures to vaporize and educe different weight fractions of oil from the kerogen in the shale into the gas streams. Preferably the heated gas streams are also passed through the moving shale bed upstream from distillation of the volatile oil constituents to preheat the shale particles and condense the educted oils which become suspended as stable mists and are mechanically separated from the gas streams. Heat energy is preferably removed from the spent shale particles of the moving bed by burning them with combustion air downstream from the retorting sites, and such heat energy is transferred to the nonoxidizing streams to raise them to different oil educting temperatures before they are passed through the moving bed to educe oil from the shale particles.

REFERENCES:
patent: 3325395 (1967-06-01), Ban
patent: 3483115 (1971-12-01), Haddad et al.
patent: 3560368 (1968-06-01), Rowland et al.
patent: 3644193 (1972-02-01), Weggel et al.
patent: 3668077 (1972-06-01), Ban
patent: 4058905 (1977-11-01), Knight
patent: 4200517 (1980-04-01), Chalmers et al.

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