ADSORPTION PROCESS FOR RECOVERING EASY-TO-REGENERATE CONDENSIBLE COMPONENTS FROM A MULTICOMPONENT GAS STREAM

摘要

The present invention relates to an improved cyclic adsorption process for recovering easy-to-regenerate condensible components from a multi-component gas stream. After contact with the inlet gas stream the adsorbent bed or beds containing easy and difficult-to-regenerate components are regenerated by contact with a lean regeneration gas stream. The resulting rich regeneration gas stream is contacted with a liquid stream consisting primarily of easy-to-regenerate components so that a major portion of the difficult-to-regenerate components contained therein are absorbed and removed by the liquid stream. The remaining rich regeneration gas stream is cooled so that easy-to-regenerate components and additional difficult-to-regenerate components contained therein are condensed thereby producing the liquid stream comprised primarily of easy-to-regenerate components used to contact the rich regeneration gas stream and a lean regeneration gas stream of a minimum difficult-to-regenerate component content. The lean regeneration gas stream is heated and recirculated in a closed circuit into contact with the bed or beds being regenerated thereby causing a maximum quantity of the difficult-to-regenerate components to be removed from the bed or beds and maximum bed easy-to-regenerate component adsorption capacity to be realized.