公开(公告)号：US20040172967A1

公开(公告)日：2004-09-09

申请号：US10791089

申请日：2004-03-02

Applicant: ABB Lummus Global Inc.

Inventor： Sanjiv Patel ,  Jorge H. Foglietta

IPC: F25J003/00

CPC classification number: F25J3/0233 ,  C10L3/10 ,  F25J3/0209 ,  F25J3/0238 ,  F25J2200/04 ,  F25J2200/70 ,  F25J2200/76 ,  F25J2200/78 ,  F25J2200/90 ,  F25J2230/60 ,  F25J2245/02 ,  F25J2270/04

Abstract: A process and apparatus to increase the recovery of ethane, propane, and heavier compounds from a hydrocarbon gas stream is provided. The process can be configured to recover ethane and heavier compounds or propane and heavier compounds, depending upon the market conditions. The process utilizes an additional reflux stream to the absorber column that is lean in ethane and propane compared to the deethanizer overhead. The additional reflux stream is taken as a side stream of the residue gas stream that is cooled, condensed, and then fed at the top of the absorber to enhanced C3null recovery. The additional lean reflux stream can also be taken as a side stream of the first vapor stream from the cold separator.

Abstract translation: 提供了从烃气流中增加乙烷，丙烷和较重化合物的回收的方法和装置。 该方法可以配置为回收乙烷和较重的化合物或丙烷和较重的化合物，具体取决于市场情况。 与脱甲烷塔顶馏出物相比，该方法利用与乙烷和丙烷相比较稀的吸收塔的附加回流。 将附加回流物流作为残留气流的侧流，将其冷却，冷凝，然后在吸收塔的顶部进料，以增强C3 +回收率。 附加的贫回流物流也可以作为来自冷分离器的第一蒸气流的侧流。