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Method of producing monolithic ceramic cross-flow filter

United States Patent

*** EXPIRED ***
February 10, 1998
View the Complete Patent at the US Patent & Trademark Office
Ceramic filter of various configuration have been used to filter particulates from hot gases exhausted from coal-fired systems. Prior ceramic cross-flow filters have been favored over other types, but those previously horn have been assemblies of parts somehow fastened together and consequently subject often to distortion or delamination on exposure hot gas in normal use. The present new monolithic, seamless, cross-flow ceramic filters, being of one-piece construction, are not prone to such failure. Further, these new products are made by novel casting process which involves the key steps of demolding the ceramic filter green body so that none of the fragile inner walls of the filter is cracked or broken.
Larsen; David A. (Clifton Park, NY), Bacchi; David P. (Schenectady, NY), Connors; Timothy F. (Watervliet, NY), Collins, III; Edwin L. (Albany, NY)
Blasch Precision Ceramics, Inc. (Albany, NY)
08/ 664,381
June 14, 1996
The present invention was made under DOE Small Business Innovation Research grant No. DE-FG 02-94ER81718 and relates to monolithic ceramic cross-flow filters and method of production. The Federal Government (U.S. Department of Energy) has rights pursuant to this contract.