Gas separation: processes – Filtering – With cleaning of filter
Patent
1992-04-13
1994-08-16
Hart, Charles
Gas separation: processes
Filtering
With cleaning of filter
55304, 55320, 55497, 55521, B01D 4604
Patent
active
053383397
ABSTRACT:
An apparatus and process are provided for removing particles from an air stream by filtration, particularly wood particles which have been treated with a resinous material, and which therefore are somewhat sticky. The apparatus is a filter system in which an air stream carrying the resinated particulates is directed upwardly through a set of filter elements which are arranged in a generally sawtooth pattern. The filter elements include a relatively large mesh screen to which the sticky particulates adhere and form of a filtering layer on the mesh in situ. As the filtering layer grows, its porosity is continually reduced, until it reaches a minimum acceptable level, at which time the filter elements are vibrated to cause a portion of the filtering layer to fall away, leaving a portion of the layer adhering to the filter element. In this way, continuous, high-efficiency filtering of a sticky particulate from an air stream is achieved.
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Hart Charles
Louisiana-Pacific Corporation
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