Method and apparatus for filtering gas with a moving granular filter bed

Patent · Tue Dec 18 00:00:00 EST 2007

OSTI ID:921088

Brown, Robert C ^[1]; Wistrom, Corey ^[1]; Smeenk, Jerod L ^[1]

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1. Ames, IA

A method and apparatus for filtering gas (58) with a moving granular filter bed (48) involves moving a mass of particulate filter material (48) downwardly through a filter compartment (35); tangentially introducing gas into the compartment (54) to move in a cyclonic path downwardly around the moving filter material (48); diverting the cyclonic path (58) to a vertical path (62) to cause the gas to directly interface with the particulate filter material (48); thence causing the gas to move upwardly through the filter material (48) through a screened partition (24, 32) into a static upper compartment (22) of a filter compartment for exodus (56) of the gas which has passed through the particulate filter material (48).

• Research Organization: Ames Laboratory (AMES), Ames, IA
• Sponsoring Organization: USDOE
• DOE Contract Number: FG26-99FT40588
• Assignee: Iowa State University Research Foundation, Inc. (Ames, IA)
• Patent Number(s): 7,309,384
• Application Number: 10/487,130
• OSTI ID: 921088
• Country of Publication: United States
• Language: English