| 摘要 |
The present invention relates to an improved cyclic process for recovering condensible components from a gas stream utilizing a plurality of stationary absorbent beds. By the present invention, during a first part of each cycle the gas stream is passed through a first bed so that condensible components are absorbed therefrom, the first part of each cycle being equal to the time required for the residue gas from the first bed to reach a condensible component content of a predetermined level. A second bed is simultaneously cooled with a cooling gas stream which is confined within a closed circuit so that the second bed is prevented from becoming preloaded with condensible components during the cooling thereof. During the remainder of each cycle the gas stream is passed serially through the first and second beds so that additional condensible components are absorbed on the first bed and condensible components contained in the residue gas from the first bed are absorbed on the second bed. A third bed is heated and stripped during each cycle with a regeneration gas stream and condensible components are recovered from the regeneration gas stream.
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