METHODS AND SYSTEMS FOR PURIFYING CARBON DIOXIDE

原文（中国語）

A method may include passing a feed stream including carbon dioxide, water and one or more impurities over a first lean adsorbent bed to produce a dehydrated stream depleted in water and a first rich adsorbent bed enriched in water. The method may also include passing the dehydrated stream over a second lean adsorbent bed to produce a carbon dioxide product stream depleted in the one or more impurities and a second rich adsorbent bed enriched in the one or more impurities. The method may further include passing a first regeneration gas stream over the first rich adsorbent bed to produce a first spent regeneration gas stream enriched in water; and combining the first spent regeneration gas stream or a stream derived from the first spent regeneration gas stream with the feed stream.