公开(公告)号：US20230241548A1

公开(公告)日：2023-08-03

申请号：US18103318

申请日：2023-01-30

Applicant: MARATHON PETROLEUM COMPANY LP

Inventor： William L. Holland ,  Todd M. Becker

IPC: B01D53/14 ,  C01B32/50 ,  C01B32/40 ,  B01D53/04 ,  B01D53/18

CPC classification number: B01D53/1462 ,  C01B32/50 ,  C01B32/40 ,  B01D53/1425 ,  B01D53/04 ,  B01D53/1418 ,  B01D53/18 ,  C01B2210/0003 ,  C01B2210/0015 ,  B01D2253/1124 ,  B01D2257/304 ,  B01D2252/204

Abstract: Systems and methods for preventing formation of carbonyl sulfide in the production of sweet gas using an amine-lean aqueous solution and metal oxide adsorbent material. In embodiments, a method may include producing, via an amine absorption column supplied with a raw gas stream that includes fractions of hydrogen sulfide (H2S), carbon dioxide (CO2), and carbon monoxide (CO), (1) a sweet gas stream that includes the fractions of the CO and (2) an amine-rich aqueous solution that includes the H2S and CO2. The method may include heating the amine-rich aqueous solution to produce a heated amine-rich aqueous solution. The method may include producing, via an amine regenerator supplied with the heated amine-rich aqueous solution (1) an acid gas stream that includes the H2S and CO2 and (2) an amine-lean aqueous solution. The method may include producing, via adsorption in a metal oxide adsorbent vessel, an effluent stream that includes the CO2.