Gas separation: processes – With control responsive to sensed condition – Concentration sensed
Reexamination Certificate
2006-12-19
2006-12-19
Hopkins, Robert A. (Department: 1724)
Gas separation: processes
With control responsive to sensed condition
Concentration sensed
C095S090000, C095S287000, C095S900000, C096S109000, C096S131000, C096S135000, C055S340000, C055S410000, C055S417000, C055S467000, C055S473000, C055S485000
Reexamination Certificate
active
07150778
ABSTRACT:
The present invention is a system and method for improving the useful life of sorbent beds, such as activated carbon filter beds. It is known that breakthrough in carbon filter beds first occurs at the low gas velocity regions of the filter bed, i.e., at the filter's edges. A recirculation jacket filter system diverts already filtered air from the downstream side of the filter bed toward the peripheral region of the upstream side of the filter bed so that contaminants near the filter's edges are reduced and filter life is improved.
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Betten Carl A.
Dauber Lyle D.
Peterson David R.
Reid D. Michael
Thoner Thomas S.
Biffoni Ulysses John
Hopkins Robert A.
The United States of America as represented by the Secretary of
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