Countercurrent plug-like flow of two solids

Gas: heating and illuminating – Processes – Fuel mixtures

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34 10, 48202, 48DIG4, 134 25R, 201 12, 201 16, 201 31, 208 8R, 208 11R, 423659, 423DIG16, 432197, C10J 346, C10J 354, C10B 4922

Patent

active

041572459

ABSTRACT:
A process is disclosed for contacting at least two solids and a fluid, particularly for retorting and/or gasification of solid carbonaceous materials such as coal, coke, shale or tar sands by introducing a solid heat-transfer material into an upper portion of a treatment or contacting zone and a solid carbonaceous material into a lower portion of the treatment or contacting zone. The solid heat carrier is fluidized by an upflowing gas and moves downwardly, while the solid carbonaceous materials are entrained and move upwardly. The fluidizing gas may be inert or reactive. Substantially countercurrent plug flow of the two solids in the treatment or contacting zone is maintained by including means for preventing back mixing, such as a packing material filling the treatment or contacting zone.

REFERENCES:
patent: 2533026 (1950-12-01), Matheson
patent: 2557680 (1951-06-01), Odell
patent: 2631921 (1953-03-01), Odell
patent: 2673177 (1954-03-01), Buell
patent: 2701758 (1955-02-01), Danulat et al.
patent: 2868631 (1959-01-01), Woebcke
patent: 3853498 (1974-12-01), Bailie

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