Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1977-03-07
1980-08-19
Spitzer, Robert H.
Gas separation
Means within gas stream for conducting concentrate to collector
55 62, 55 74, B01D 5304
Patent
active
042182247
ABSTRACT:
A method for controlling the regeneration (desorbtion) of an absorbent material, i.e., an adsorbent bead or particle, for hydrocarbon vapors vented from confined spaces during periods of liquid fluctuations in the confined zone or for hydrocarbon vapors vented from within said zone which vapors are deliberately generated, or as a result of heating and cooling the confined spaces as a result of exposure to atmospheric temperature fluctuations of the confined space. The method is accomplished by providing a bed of absorbent material for said vapors in vapor communication with the vent of the confined space(s) as well as in communication with the opposite end of the fluid path through said bed to the ambient atmosphere, providing a pair of thermocouples and associated control mechanisms, one thermocouple at each end of said bed, and a valve controllable by each associated control mechanism for controlling the delivery of steam to the ambient atmosphere side of the bed, one thermocouple being calibrated to cause its associated control mechanism to open the valve controlling the steam to heat the air entering the bed from the ambient atmosphere when air is required to pass through the bed from the ambient atmosphere, the other thermocouple being calibrated to override the first thermocouple to control the steam valve when the temperature of the air and desorbed vapors reaches a predetermined temperature-the entire control system being inactive when no air or vapor is flowing.
REFERENCES:
patent: 3109486 (1963-11-01), Hansen
patent: 3338029 (1967-08-01), Warfield, Jr.
patent: 3468103 (1969-09-01), Hergt
patent: 3748829 (1973-07-01), Joyce et al.
patent: 3776283 (1973-12-01), Kramer et al.
patent: 3881894 (1975-05-01), Onufer
patent: 3897193 (1975-07-01), Kattan et al.
Baker G. R.
Spitzer Robert H.
The Dow Chemical Company
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