公开(公告)号：DE2840126A1

公开(公告)日：1980-03-27

申请号：DE2840126

申请日：1978-09-15

Applicant: BASF AG

Inventor： DEYCK FRANS VAN ,  HENS VICTOR ,  NEUBAUER GERALD DIPL CHEM DR

IPC: B01D53/047 ,  C01B2/30

Abstract: Purification of synthesis gas produced by steam reforming of hydrocarbons (esp.CH4) is carried out by scrubbing to remove most of the CO2, compressing, and removing residual CO2, hydrocarbons and H2O by contact with an adsorbent (e.g. mol. sieve) in adsorbers operating alternately in adsorption and regeneration phases. The improvement comprises passing part of the synthesis gas to a storage tank and recycling the stored gas into the synthesis gas circuit so as to maintain constant operating parameters in the downstream gas sepn. equipment. The stored gas can be used to restore the pressure in the absorbers after decompression in the regeneration phase, so that the purified gas leaving the adsorption unit remains constant in vol. and compsn.