Importance

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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.

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First Claim