Heat of compression pulse purge gas dryer

Gas separation: processes – Solid sorption – Inorganic gas or liquid particle sorbed

Reexamination Certificate

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Details

C096S126000

Reexamination Certificate

active

11102376

ABSTRACT:
A heat of compression gas drying apparatus includes an air inlet fed by a source of compressed moisture laden air, an air outlet and first and second desiccant-containing towers for processing air flowing therethrough. A portion of cooled dried air delivered to the air outlet is selectively diverted to either a pathway having a heater so that heated dried air may be delivered to a tower having its desiccant regenerated, or to a separate pathway so that cooled dried air is delivered to the regenerating tower. In each case, a purge isolation valve is controlled to deliver and hold pressurized dried air in the regenerating tower after which the dried air in the regenerating tower is purged to atmosphere by pulsing an exhaust valve arrangement connected to the regenerating tower.

REFERENCES:
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patent: 4919695 (1990-04-01), Trepaud
patent: 5037458 (1991-08-01), Trepaud
patent: 5681370 (1997-10-01), McMahon
patent: 5925169 (1999-07-01), Vertriest
patent: 6171377 (2001-01-01), Henderson
patent: 6375722 (2002-04-01), Henderson et al.
patent: 6767390 (2004-07-01), Battershell et al.
patent: 7000332 (2006-02-01), Fresch et al.

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