Patent ID: 7846413

Claim:
A process, comprising: (a) contacting steam, a hydrocarbon, and a reforming catalyst at a temperature of at least 550° C., said hydrocarbon being vaporizable at said temperature, to produce a first reformed gas containing hydrogen, carbon monoxide, steam and at least one vaporized hydrocarbon; (b) cooling the first reformed gas to a temperature of from 200° C. to 500° C.; (c) contacting the cooled first reformed gas with a water-gas shift catalyst to produce a first shift gas containing hydrogen, carbon dioxide, steam, and at least one vaporized hydrocarbon; (d) separating hydrogen from the first shift gas to produce a first hydrogen gas stream and a hydrogen-depleted gas containing carbon dioxide, steam, and at least 5 mol % on a dry basis of vaporized hydrocarbons; (e) contacting the hydrogen-depleted gas with a reforming catalyst at a temperature of at least 550° C. to produce a second reformed gas containing hydrogen, carbon monoxide, and steam; (f) cooling the second reformed gas to a temperature of from 200° C. to 500° C.; (g) contacting the cooled second reformed gas with a water-gas shift reaction catalyst to produce a second shift gas containing hydrogen and carbon dioxide; (h) separating the second shift gas into a second hydrogen gas stream and carbon dioxide stream.