公开(公告)号：US20140171716A1

公开(公告)日：2014-06-19

申请号：US13715785

申请日：2012-12-14

Applicant: UOP LLC

Inventor： Stanislav Milidovich ,  Ernest James Boehm ,  William J. Lechnick

IPC: C07C7/00

CPC classification number: C07C7/005 ,  B01D53/1406 ,  B01D53/1462 ,  B01D2252/20405 ,  B01D2252/20431 ,  B01D2252/20489 ,  B01D2256/245 ,  C07C7/11 ,  C10L3/103 ,  C10L3/104 ,  C10L2290/06 ,  C10L2290/12 ,  C10L2290/46 ,  C10L2290/48 ,  C10L2290/541 ,  Y02C10/06 ,  Y02P20/152 ,  C07C9/04

Abstract: A process includes contacting a feed stream of light hydrocarbons and an acid gas with a first solvent stream to produce a first methane-enriched overhead gas stream and a first stage solvent effluent bottoms stream including absorbed methane and absorbed acid gas. The process further includes flash separating the first stage solvent effluent bottoms stream to produce a vapor fraction including the acid gas and methane a gas-depleted liquid fraction of the first stage solvent effluent bottoms stream. The process further includes contacting the first methane-enriched overhead gas stream with a second solvent stream to produce a second methane-enriched overhead gas stream and a second stage solvent effluent bottoms stream including absorbed methane CO2. Still further, the process includes regenerating the second stage solvent effluent bottoms stream to produce a vapor fraction comprising the acid gas and a regenerated liquid fraction of the second stage solvent effluent bottoms stream.

Abstract translation: 一种方法包括使轻烃和酸性气体的进料流与第一溶剂流接触，以产生第一甲烷富集的塔顶气流和包含吸收的甲烷和被吸收的酸性气体的第一级溶剂流出物底部物流。 该方法还包括将第一阶段溶剂流出物底部料流快​​速分离以产生包含酸性气体和甲烷的蒸气馏分，这是第一级溶剂流出物底部料流的贫气液体馏分。 该方法还包括使第一富含甲烷的塔顶气流与第二溶剂流接触以产生第二甲烷富集的塔顶气流，以及包括吸收的甲烷CO 2的第二阶段溶剂流出物底部流。 此外，该方法包括再生第二阶段溶剂流出物底部流以产生包含酸性气体的蒸气馏分和第二阶段溶剂流出物底部料流的再生液体馏分。