APPARATUS AND METHOD FOR REMOVING PARTICULATE DEPOSITS FROM HIGH TEMPERATURE FILTERS

The combustion (50) of a fuel-air mixture (52,54) is used to provide a high-temperature and high-pressure pulse of gaseous combustion products (64,66,68) for the back-flush cleaning of ceramic filter elements (22,24,26) contained in a barrier filter system (18) and utilized to separate particulates...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAISHI, CURTIS V, HOLCOMBE, NORMAN T, MICHELI, PAUL L
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TRANSPORTING
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Beschreibung
Zusammenfassung:	The combustion (50) of a fuel-air mixture (52,54) is used to provide a high-temperature and high-pressure pulse of gaseous combustion products (64,66,68) for the back-flush cleaning of ceramic filter elements (22,24,26) contained in a barrier filter system (18) and utilized to separate particulates from particulate-laden process gases at high temperature and high pressure. The volume of gaseous combustion products (64,66,68) provided by the combustion (50) of the fuel-air mixture (52,54) is preferably divided into a plurality of streams (64,66,68) each passing through a sonic orifice (70) and conveyed to the open end (28) of each filter element as a high pressure pulse which passes through the filter elements (22,24,26) and dislodges dust cake supported on a surface of the filter element.