公开(公告)号：US12172896B2

公开(公告)日：2024-12-24

申请号：US17594190

申请日：2020-04-22

Applicant: HALDOR TOPSØE A/S

Inventor： Steffen Spangsberg Christensen ,  Arunabh Sahai

IPC: C01B3/40 ,  B01D53/00 ,  B01D53/047 ,  B01D53/14 ,  B01D53/22 ,  B01J19/24 ,  B01J21/04 ,  B01J23/06 ,  C01B3/48 ,  C01B3/50 ,  C01B3/52 ,  C01B3/56 ,  F25J3/06

Abstract: A plant and process for producing a hydrogen rich gas are provided, said process comprising the steps of: reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O; shifting said synthesis gas in a shift configuration including a high temperature shift step; removal of CO2 upstream hydrogen purification unit, such as a pressure swing adsorption unit (PSA), and recycling off-gas from hydrogen purification unit and mix it with natural gas upstream prereformer feed preheater, prereformer, reformer feed preheater or ATR or shift as feed for the process.