Method and apparatus for regenerating a moist absorption medium

Details Method and apparatus for regenerating a moist absorption medium Method and apparatus for regenerating a moist absorption medium

1997-06-13

1999-07-27

Bennett, Henry

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34473, F26B 2106

Patent

active

059269693

ABSTRACT:
A method and an apparatus for regenerating a moist adsorption medium in a multiple vessel drying system utilize a pulsed control of a purge gas outlet valve during a regeneration phase. Internal heaters are embedded in the desiccant beds. During the regeneration phase of a desiccant bed, the internal heater heats the desiccant to remove the moisture therefrom in the form of water vapor. After the water vapor builds up in the drying vessel for a certain period of time, the purge gas outlet valve is opened for a period of time just long enough to flush the built up water vapor from the vessel, and is then closed again. Accordingly, the amount of purge gas required is minimized, which leads to a higher quality purge, higher overall system drying efficiency, as well as reduced energy requirements.

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