Adsorbent fractionator with fail-safe automatic cycle control an

Details Adsorbent fractionator with fail-safe automatic cycle control an Adsorbent fractionator with fail-safe automatic cycle control an

1976-10-18

1978-11-28

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

55 33, 55 62, 55163, 55179, 55208, 55270, 55275, 55387, B01D 5304, B01D 5330

Patent

active

041273958

ABSTRACT:
An improved method and apparatus are provided for adsorbing water vapor from a mixture thereof with a second gas to reduce the water vapor concentration in the mixture to below a permissible maximum concentration, in which the advance of the leading edge of the moisture front in a sorbent bed is detected by sampling the gas sufficiently far from the end of the bed to prevent the moisture front from leaving the bed, using a gas sampling probe, so that when the moisture front reaches this point, the adsorption cycle is discontinued, and the bed regenerated; a failed or inoperative sensor or sensor circuit being detected by intoducing to the sensor wet air from the dryer inlet; in the absence of a response sensing the air as wet, an alarm is given, and optionally, the dryer can automatically be placed in a fixed-time cycle operation.

REFERENCES:
patent: 3218841 (1965-11-01), Lerner
patent: 3448561 (1969-06-01), Seibert et al.
patent: 3976450 (1976-08-01), Marcote et al.

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