Contactor/filter improvements

Details Contactor/filter improvements Contactor/filter improvements

1988-06-30

1989-11-14

Nozick, Bernard

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

422216, 55 99, 55479, B01J 800

Patent

active

048806080

ABSTRACT:
A contactor/filter arrangement for removing particulate contaminants from a gaseous stream includes a housing having a substantially vertically oriented granular material retention member with upstream and downstream faces, a substantially vertically oriented microporous gas filter element, wherein the retention member and the filter element are spaced apart to provide a zone for the passage of granular material therethrough. The housing further includes a gas inlet means, a gas outlet means, and means for moving a body of granular material through the zone. A gaseous stream containing particulate contaminants passes through the gas inlet means as well as through the upstream face of the granular material retention member, passing through the retention member, the body of granular material, the microporous gas filter element, exiting out of the gas outlet means. Disposed on the upstream face of the filter element is a cover screen which isolates the filter element from contact with the moving granular bed and collects a portion of the particulates so as to form a dust cake having openings small enough to exclude the granular material, yet large enough to receive the dust particles. In one embodiment, the granular material is comprised of prous alumina impregnated with CuO, with the cover screen cleaned by the action of the moving granular material as well as by backflow pressure pulses.

REFERENCES:
patent: 2825424 (1958-03-01), Gross
patent: 3912466 (1975-10-01), Zenz
patent: 4006533 (1977-02-01), Squires
patent: 4360364 (1982-11-01), Kohl
patent: 4443419 (1984-04-01), Carson
A1-DOE-13562, Final Report Under Contract DE-AC22-83PC60262, pp. Title, Abstract, 12-14, 61 and 67-90.
Stelman, "Simultaneous Removal of SO.sub.x, NO.sub.x and Particulates by a Moving Bed of Copper Oxide", Coal Utilization and Environmental Control, Contractors' Review Meeting, Jul. 7-9, 1987.

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