Gas separation – With nonliquid cleaning means for separating media – Cohesive filter media cleaning
Patent
1990-08-29
1991-05-07
Hart, Charles
Gas separation
With nonliquid cleaning means for separating media
Cohesive filter media cleaning
55523, B01D 4604
Patent
active
050133411
ABSTRACT:
In accordance with the present invention, there is provided a filter housing comprising a plurality of open-ended parallel hollow gas permeable filter elements for separating particulate material from a high-temperature gas. The filter housing comprises at least a pair of cross sectional support plates having apertures therethrough, for dividing the filter housing into at least three sections and for supporting the filter elements. The support plates divide the filter housing into a first end section having an inlet for dirty gas, a second end section in connection with a discharge port for separated particulate material, and an intermediate filtration chamber section therebetween. The filter elements are arranged in the intermediate filtration chamber extending from the first support plate to the second support plate. The end portions of the filter elements are affixed to the apertures through the support plates. Inlet openings of the filter elements are arranged in communication with the first end section of the filter housing, for introducing dirty gas into the filtration elements. Outlet openings of the filter elements are in communication with the second end section, for discharging separated particulate material from the filter elements. A clean gas outlet conduit is in communication with the clean gas space in the intermediate filtration chamber, for discharging clean gas from the filter housing. It is an important feature of the present invention that means are provided inside said filter housing for supplying a reverse flow pressure pulse of high energy gas into said filtration chamber, for cleaning the porous filter medium. The reverse-flow pressure pulse can be supplied through a relatively small pipe connected to a compressor.
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Isaksson Juhani
Russell Dave B.
A. Ahlstrom Corporation
Hart Charles
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