Pulse purge regenerative gas dryer

Details Pulse purge regenerative gas dryer Pulse purge regenerative gas dryer

2006-02-21

2006-02-21

Lu, Jiping (Department: 3749)

Drying and gas or vapor contact with solids

Process

With contacting of material treated with solid or liquid agent

C034S343000, C034S473000, C095S098000, C095S122000, C095S123000

Reexamination Certificate

active

07000332

ABSTRACT:
A gas drying apparatus is provided having at least two desiccant-containing towers which alternately receive moisture-saturated air from an inlet to be dried during a drying phase, and then receive dry air during a regeneration phase to regenerate the desiccant which had previously adsorbed moisture from saturated air during the drying phase. The apparatus diverts a portion of dry air flowing along one of two flow paths including a first flow path having a heater and a pulse purge regeneration control valve for selectively enabling delivery of heated dry air to the tower being regenerated, and a second flow path which bypasses the first flow path and includes a bypass valve for selectively permitting delivery of unheated dry air to the tower being generated so as to cool the desiccant therein. A temperature sensing arrangement is provided for monitoring and maintaining the internal temperature of heated dry air delivered into the tower being regenerated.

REFERENCES:
patent: 4738692 (1988-04-01), Fresch et al.
patent: 5485686 (1996-01-01), Sears, Jr.
patent: 6729039 (2004-05-01), Crawford

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