Fluidized bed systems

Details Fluidized bed systems Fluidized bed systems

1977-05-19

1981-06-30

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

48DIG4, 55390, 209139R, B01D 5312

Patent

active

042760623

ABSTRACT:
A selected fraction of solid particles having sizes, densities and/or weights in a selected range is separated from a mixture of articles by fluidizing the mixture in a bed using a fluidizing fluid to cause particles including the selected fraction to pass out of the top of the bed; conveying the particles in a conveying fluid to a suitable separator (e.g. a cyclone) wherein the selected particles fraction is separated from smaller, lighter particles; injecting the separated fraction from the separator into a utilization zone (e.g. a fluid bed reactor); entraining other particles in the conveying fluid to another separator (e.g. a cyclone) to produce solids-free conveying fluid which is recirculated for re-use. The original particles mixture may be obtained by separation (e.g. in a cylone) from fluid leaving the utilization zone.

REFERENCES:
patent: 1850756 (1932-03-01), Lessing
patent: 2396709 (1946-03-01), Leffer
patent: 2423813 (1947-07-01), Lechthaler et al.
patent: 2864763 (1958-12-01), Schulman et al.
patent: 2959284 (1960-11-01), Molstedt
patent: 3957459 (1976-05-01), Mitchell et al.

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