Production of purified synthesis gas H2 -rich gas, and by-product CO2 -rich gas

摘要: A raw synthesis gas feed stream, e.g., gaseous mixtures comprising H2 and CO containing impurities including CO2, S, COS, thereof (acid gas) CH4, optionally in admixture with a CO-rich stream produced subsequently the process, is introduced into water-gas shift reactor to produce CO2. Acid gases are then removed of purified by contacting process first liquid solvent absorbent such as methanol, N-methyl-pyrrolidone, or dimethyl ether polyethylene glycol. An -rich may be obtained removing from stream. This done physical absorption second an aqueous solution cuprous ammonium acetate. By regenerating solvent, aforesaid produced. The desorbed said acid regenerated for reuse techniques flashing plus reboiling stripping. Advantageously, used stripping portion either before after removal acid-gas, product gas. CO2 which during regeneration injected subterranean oil reservoir effect secondary tertiary recovery oil. Optionally, S mixture.