Pressure swing gas separation

Details Pressure swing gas separation Pressure swing gas separation

1989-11-13

1991-12-03

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 58, 55 62, 55 75, 55179, 55389, B01D 5304

Patent

active

050696882

ABSTRACT:
A pressure swing gas separator is operated with a pressure difference between its pressurized and depressurized states of less than 0.1 bar. The separator operates at a repetition frequency greater than one cycle per second and preferably between 50 and 200 cycles per second. The separator includes a bed (16, 108, 147) which preferably forms part of a resonant system. A drive for resonant system may be taken from a thermally driven gas resonance device (1, 101) or may be provided by an electrical actuator (140). Preferably the bed is covered by a diaphragm (109, 133, 141) which, as it oscillates, pressurizes and depressurizes the bed of adsorbent material. The diaphragm may cooperate with an annular valve seat (114) to provide a valve to control the entry of gas into the bed.

REFERENCES:
patent: 3121625 (1964-02-01), Broughton
patent: 3164454 (1965-01-01), Wilson
patent: 3236028 (1966-02-01), Rutan
patent: 4144037 (1979-03-01), Armond et al.
patent: 4194891 (1980-03-01), Earls et al.
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patent: 4406675 (1983-09-01), Dangieri et al.
patent: 4702903 (1987-10-01), Keefer
patent: 4801308 (1989-01-01), Keefer
C. L. Pritchard et al., "Design of an Oxygen Concentrator Using the Rapid Pressure-Swing Adsorption Principle", Chem. Eng. Res. Des. vol. 64, Nov. 1986, pp. 467-472.

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