Patent ID: 7947747

Claim:
A process for preparing an alcohol/ether mixture , an alcohol/hydrocarbon mixture and synthesizing ammonia, said process comprising: i) pre-heating a feed gas to 210° C. to 220° C.: wherein the feed gas contains 91% to 97% H 2 and N 2 . and 1% to 8% CO and CO 2 , CH 4 and Ar; ii) performing desulfurization to lower the sulfur content in the feed gas to less than 1 ppm; iii) reacting the feed gas with a catalyst for alcohol formation and conducting etherification at 210° C. to 290° C. to form an alcohol/ether mixture; iv) cooling the mixture to 70° C. to 90° C.; v) condensing the mixture into liquid, wherein an ether content of 5% to 30% is obtained; vi) separating the alcohol/ether mixture from the reacted gas, wherein the CO and CO 2 content in the reacted gas is 0.1% to 0.8% after alcohol formation and etherification; vii) preheating the reacted gas having 0.1% to 0.8% CO and CO 2 content to 180° C. to 210° C.; viii) reacting the reacted gas with an iron catalyst to form an alcohol/hydrocarbon mixture and methane at a temperature of 200° C. to 300° C.; ix) cooling the alcohol/hydrocarbon mixture to 35° C. to 90° C.; x) condensing the alcohol/hydrocarbon mixture and water vapour into liquid; xi) cooling the liquid to 5° C.; and xii) separating the remaining gas and liquid from the alcohol, hydrocarbon and water mixture, wherein the remaining gas comprises H 2 , N 2 , methane, and not more than 10 ppm of CO and CO 2 ; xiii) synthesizing ammonia from the remaining gas and condensing the ammonia into liquid ammonia; separating and collecting the liquid ammonia; and optionally, collecting any finally remaining gas to supplement the feed gas in a repeated cycle of the process; wherein the catalyst for the step of alcohol formation and etherification is a catalyst of the copper series comprising copper, zinc, aluminum and rare earth metals in an atomic ratio of Cu:Zn:Al=2 to 3:1:2 to 2.5, CeO 2 at 3% and active Al 2 O 3 ; and wherein the catalyst for the step of hydrocarbon formation and alcohol formation is a catalyst of the iron series, comprising 80% to 85% Fe 3 O 4 , 2% to 3.5% CaO, 0.8% to 2% K 2 O, 2.5% to 3.5% Al 2 O 3 , 0.5% to 2.5% CeO 2 and 3% to 4% Co 3 O 4 .