Gasification process

Details Gasification process Gasification process

1978-03-17

1979-01-30

Bashore, S. Leon

Gas: heating and illuminating

Processes

Fuel mixtures

48202, 48206, C10J 346, C10J 354

Patent

active

041370538

ABSTRACT:
A continuous process and apparatus are disclosed for the retorting or gasification of hydrocarbon-containing solids such as oil shale, coal, tar sands, etc., wherein the solids are retorted or gasified in a combined entrained and fluidized bed. A solid fluidized heat-transfer material flows downwardly through a conversion zone. Subdivided hydrocarbon-containing solids are introduced into a central portion of the conversion zone, with smaller particles of the solids being entrained and moving upwardly through the conversion zone countercurrent to the flow of the fluidized heat-transfer material, and larger particles of the solids being fluidized and moving downwardly through the conversion zone concurrent with the flow of the heat-transfer material. A fluidizing gas is injected into a lower portion of the conversion zone and a portion of the solids is combusted, providing the necessary heat for the conversion reactions. Substantially plug flow of the heat-transfer solid and the hydrocarbon-containing solids is maintained by including in the conversion zone means for impeding back mixing, such as a packing material filling the conversion zone.

REFERENCES:
patent: 2533026 (1950-12-01), Matheson
patent: 2557680 (1951-06-01), Odell
patent: 2701758 (1955-02-01), Danulat et al.
patent: 2868631 (1959-01-01), Woebcke

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