| 摘要 |
2-adsorber systems of the VSA process have been found which, surprisingly, require only a slightly higher energy consumption in comparison with the 3-adsorber systems, but are considerably more favorable in terms of investment in the plant because of the small number of valves and adsorbers, and in particular adsorptive separation of a gas mixture (crude gas) in containers (adsorbers) filled with adsorbent, with the phase which is adsorbed less strongly, if at all, being obtained and the adsorbed gas content (adsorbate) being desorbed under reduced pressure, e.g. by means of a vacuum pump has been found. The process is characterized in that two adsorbers (A and B) are operated alternately so that the crude gas feed and also the desorption of the adsorbate, i.e. connection of the vacuum pump, is not stopped at any time during the separation process, separation of the crude gas partly taking place under reduced pressure when the maximum adsorption pressure has been reached.
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