| 摘要 |
<p>A vacuum swing adsorption apparatus 2 for separating a gas mixture includes a pipeline 6 along which the vacuum is able to be drawn. The apparatus is provided with a plurality of eductors 24, 26, 28 and 30 each connected to the pipeline 6 and in parallel with the other eductors, and with respective stop valves 48, 50 52 and 54. The stop valves 48, 50, 42 and 54 are arrangement and operable so as to select the number of eductors 24, 26 28 and 30 in communication with the pipeline 6. Thus is the degree of vacuum to which the apparatus 2 is subjected may be varied. <IMAGE></p> |
