Gas separation: processes – With control responsive to sensed condition – Concentration sensed
Patent
1997-04-14
1998-12-29
Smith, Duane S.
Gas separation: processes
With control responsive to sensed condition
Concentration sensed
55DIG34, 95 25, 95 96, 95148, 96 11, 96130, 96417, B01D 5304
Patent
active
058534555
ABSTRACT:
A method is provided for efficiently controlling the operation of a vapor recovery system including a first reaction vessel and first bed of adsorbent, a second reaction vessel and second bed of adsorbent and a vacuum pump for selectively regenerating those beds of adsorbent. The method includes the step of adsorbing vapor from an air-volatile liquid vapor mixture on the first bed of adsorbent in the first reaction vessel, measuring a total amount of the vapor adsorbed by the first bed of adsorbent, comparing the total amount of vapor adsorbed on the first bed of adsorbent to a first predetermined value which is a percentage of the first bed adsorbance capacity and regenerating the first bed of adsorbent and adsorbing the vapor from the air-volatile liquid vapor mixture on the second bed of adsorbent in the second reaction vessel upon reaching the first predetermined value. The method also includes the steps of measuring a total amount of the vapor adsorbed by the second bed of adsorbent, comparing the total amount of vapor adsorbed on the second bed of adsorbent to a second predetermined value that is a percentage of the second bed's adsorbance capacity and regenerating the second bed of adsorbent and adsorbing the vapor from the air-volatile liquid vapor mixture on the first bed in the first reaction vessel upon reaching the second predetermined value. A volatile liquid vapor recovery system incorporating the new control system is also provided.
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Jordan Technologies, Inc.
Smith Duane S.
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