公开(公告)号：US20190152777A1

公开(公告)日：2019-05-23

申请号：US16300330

申请日：2017-06-14

Applicant: Haldor Topsøe A/S

Inventor： Christian Henrik Speth ,  Annette E. Krøll Jensen

IPC: C01B3/02 ,  B01D53/14

Abstract: In a method for the reduction of methanol emission from an ammonia plant, a chilled methanol-containing feed gas is fed to a methanol absorber, carbon dioxide is separated from the gas phase leaving the methanol absorber, the methanol-containing gas is fed to a final separator, and the chilled, methanol-free process condensate from the final separator is used to wash out the methanol in a scrubbing column. By cooling the streams to the column and inserting a number of individual wash trays in the column, a practically quantitative removal of methanol is possible.

公开(公告)号：US20190039886A1

公开(公告)日：2019-02-07

申请号：US16074515

申请日：2017-02-02

Applicant: HALDOR TOPSØE A/S

Inventor： Annette E. Krøll Jensen ,  Per Juul Dahl ,  Niels Christian Schjødt

IPC: C01B3/02 ,  C01B3/48 ,  C01C1/04 ,  B01J23/06

Abstract: A process for producing an ammonia synthesis gas, said process including the steps of: reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH4, CO, CO2 , H2 and H2O; and shifting said synthesis gas in a high temperature shift step over a promoted zinc-aluminum oxide based high temperature shift catalyst, wherein the steam/carbon ratio in the reforming step is less than 2.6.