| 摘要 |
A process for the production of carbon dioxide in concentrated form and electricity from a hydrocarbon feedstock said process comprising the steps of: a) introducing an air feed stream comprising air and optionally steam and a fuel feed stream comprising methane and optionally hydrogen and/or steam to an autothermal reactor unit (ATR) for the production of synthesis gas wherein (i) the temperature of the fuel feed stream is in the range 350 to 7000 C; and (ii) the molar ratio of oxygen contained in the air feed stream to carbon (in hydrocarbons) in the fuel feed stream is from 0.45:1 to 0.85:1, preferably 0.6:1 to 0.7:1; b) withdrawing a synthesis gas stream comprising methane, hydrogen, carbon monoxide, carbon dioxide, nitrogen and optionally steam from the ATR and heat exchanging the synthesis gas stream with a water stream for the production of steam and subsequently heat exchanging the synthesis gas stream with at least one process stream selected from the group consisting of a hydrocarbon feedstock, a pre-reformer feed stream, the fuel feed stream, a hydrogen stream, boiler feed water, the air feed stream, and steam for the production of superheated steam; c) if necessary, introducing steam to the synthesis gas stream before passing at least a portion of the synthesis gas stream to a shift converter unit where the synthesis gas reacts with steam to generate additional carbon dioxide and hydrogen; d) withdrawing a shift converted gas stream from the shift converter unit and heat exchanging the shift converted gas stream with at least one process stream selected from the group consisting of a hydrocarbon feedstock, a pre-reformer feed stream, the fuel feed stream, a hydrogen stream, boiler feed water, the air feed stream, water for the production of steam, and steam for the production of superheated steam; e) passing the shift converted gas stream to a carbon dioxide separation unit for the separation of a concentrated carbon dioxide stream from a hydrogen stream comprising hydrogen and nitrogen; f) combusting at least part of the hydrogen stream in a gas turbine wherein the gas turbine drives an electric generator thereby producing electricity and wherein combustion of the hydrogen stream generates an exhaust gas.
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