| 简介 |
A process for the preparation of hydrocar-bon products comprising the steps of (a) providing a syn-thesis gas comprising hydrogen, carbon monoxide and car-bon dioxide; (b) reacting the synthesis gas to an oxygenate mixture comprising methanol and dimethyl ether in pres-ence of one or more catalysts which together catalyse a re-action of hydrogen and carbon monoxide to oxygenates at a pressure of at least 4 MPa; (c) withdrawing from step (b) the oxygenate mixture comprising amounts of methanol, dimethyl ether, carbon dioxide and water together with un-reacted synthesis gas and introducing the entire amount of the oxygenate mixture without further treatment into a cat-alytic oxygenate conversion step (d); (d) reacting the oxy-genate mixture in presence of a catalyst being active in the conversion of oxygenates to higher hydrocarbons; (e) with-drawing an effluent from step (d) and separating the efflu-ent into a tail gas, a liquid hydrocarbon phase containing the higher hydrocarbons produced in step.(d) and a liquid aqueous phase, wherein the pressure employed in steps (c) to (e) is substantially the same as employed in step (b). |
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