Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1979-01-02
1980-05-20
Prunner, Kathleen J.
Gas separation
Means within gas stream for conducting concentrate to collector
55 98, 55288, 55291, 55431, 55463, 55474, 55479, 55517, B01D 3700, B01D 4630, B01D 4642
Patent
active
042037360
ABSTRACT:
A shell and two perforated cylindrical walls are radially spaced about a common vertical axis so as to define three coaxial spaces. A gas to be purified of suspended particles is admitted to the annular first space between the shell and a filter bed of granular material in the second space between the two perforated walls, and a purified gas is withdrawn from the third space. To clean the filter bed, granular material is conveyed from the lowermost portion of the second space through a conduit to a separating device above the topmost portion of the filter bed by a stream of conveying gas, and the gas entrains most of the particles from the granular material while the latter returns to the second space by gravity. The particle-laden conveying gas is introduced tangentially into the top portion of the annular first space where it is mixed with a scavenging gas passed through the filter bed from the third to the first space. The gas mixture with the particles suspended therein descends in a spiral path through the first space, the particles are precipitated as in a cyclone, and gas and particles are withdrawn separately from the bottom of the first space.
REFERENCES:
patent: 2338807 (1944-01-01), Emery
patent: 2684870 (1954-07-01), Berg
patent: 2932498 (1960-04-01), Metcalfe et al.
patent: 4017278 (1977-04-01), Reese
patent: 4033117 (1977-07-01), Smith
patent: 4142873 (1979-03-01), Berz
Gimag Aktiengesellschaft
Prunner Kathleen J.
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