| 摘要 |
<p>A process for increasing the hydrogen content of a synthesis gas is described comprising the steps of; (i) mixing a raw synthesis gas comprising hydrogen, carbon monoxide, carbon dioxide and steam with a recycle stream containing methanol, and optionally additional steam, to form a gas mixture having a steam : carbon monoxide molar ratio =1.5:1, (ii)feeding the gas mixture to one or more fixed beds of a particulate copper catalyst over which both the water-gas shift reaction and methanol synthesis reaction occur thereby forming a shifted gas mixture containing methanol and an increased hydrogen content, (iii)cooling the shifted gas mixture to form a condensate containing methanol and a dry shifted gas mixture, and (iv)recycling at least a portion of the condensate to step (i). The dry shifted gas mixture may be used to generate power as part of an Integrated Gasification Combined Cycle process or alternatively used in Coal-To Liquids (Methanol and FT) or synthetic natural gas processes.</p> |
