The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 1990
Filed:
May. 09, 1989
Richard A Newby, Pittsburgh, PA (US);
David F Ciliberti, deceased, late Murrysville, PA (US);
Thomas E Lippert, Murrysville, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An apparatus and method for removing particulate contaminants, and optionally gaseous contaminants, from a hot gaseous stream where a vessel is provided containing a fluidized bed zone and the gases are passed through the fluidized bed zone containing a fluidized bed of granular media prior to passage of a major portion of the gas through a plurality of first hollow, ceramic, barrier filter elements at least partially disposed in the fluidized bed, and a minor portion thereof through a plurality of second hollow, ceramic, barrier polishing filter elements removed from the fluidized granular media. The plurality of first filter elements are scoured by the granular media to remove collected deposits while fine particulates collected on the plurality of second filter elements are removed by back flushing of a gas therethrough.