Title: Method for filtering gas and cleaning of filter bags

Abstract: A process for removing solids from a stream of gas comprising passing a solids-laden gas through a woven fabric filter bag, which bag is installed with longitudinal slack, wherein, during filtration, the differential pressure across the bag causes the bag to expand outwardly. During clean-off, the exhaust valve of the apparatus is closed and, as the differential pressure across the bag approaches zero, the bag becomes slack and the solids deposited on the filter surface disengage therefrom and drop, by gravity flow, to a collection bin. The exhaust valve is then opened and the step of removing solids from the gas stream is resumed.

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Inventors: Frazier, Arthur E. (Elmore, OH, US)

Application Number: 516480
Filing Date: 1974-10-21
Publication_date: 1976-06-29
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Primary Class(es): 95/282 55/302, 55/341.2, 55/378, 55/528, 95/286
Other Classes:
US Patent Ref:

1508367	Sep, 1924	Matlock	55/96.
2276805	Mar, 1942	Tolma, Jr.	55/288.
3057137	Oct, 1962	Perlis et al.	55/303.
3520109	Jul, 1970	Caskey	55/97.

Other Refs: Other References: Teflon Fiber -- by Du Pont In Chem. Engr. 5/5/69.