Filter system for purifying gas or air streams

Details Filter system for purifying gas or air streams Filter system for purifying gas or air streams

1979-01-18

1981-04-21

Hart, Charles N.

Gas separation

With guide means effecting removal of constituent layer out...

At escape means for heavier constituent

55 79, B01D 5306, B01D 4632

Patent

active

042630282

ABSTRACT:
A filter system is provided for purifying a gas stream by means of flowable or tricklable contact filter material, wherein the stream flows through the filter material and the filter material forms a movable bed. The system contains a filter chamber through which the filter material can flow and which is provided with an inlet opening and an outlet opening for the filter material between which the filter material is conveyed by gravity. The filter system includes deflection means for deflecting the stream, after a first passage of the stream through the filter bed to charge the filter bed for a first time, to a position above where the stream first passed through the filter bed and for conducting the stream at least once again transversely through the filter bed above the first charge so that the filter bed is charged a second time. The filter chamber contains a first opening where the stream enters the filter bed for the first time and is aligned with the deflection means, and a second opening aligned with the deflection means and above the first opening. The second opening is located where the stream leaves the filter bed for the second time, with a partial quantity of the gas stream being able to pass directly through the filter bed from the first opening to the second opening without going through the deflection means. The distance between the upper edge of the first opening and the lower edge of the second opening is at least twice the thickness of the filter chamber.

REFERENCES:
patent: 1570869 (1926-01-01), Thomson et al.
patent: 1798307 (1931-03-01), Cooper
patent: 1912784 (1933-06-01), Miller et al.
patent: 2636575 (1953-04-01), Watson
patent: 3429103 (1969-02-01), Taylor
patent: 3607133 (1941-09-01), Hirao

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