Zavell, A. StephenJones, Josetta I.Turner, Frank G.
인용정보
피인용 횟수 :
53인용 특허 :
7
초록▼
Hydrocarbonaceous fuel, such as coal, oil or gas, is gasified to produce syngas comprising H2and CO, scrubbed free of particles, and saturated with water. The syngas is then treated in an acid gas removal unit as desired to remove any impurities in the syngas. After processing the syngas in the AGR,
Hydrocarbonaceous fuel, such as coal, oil or gas, is gasified to produce syngas comprising H2and CO, scrubbed free of particles, and saturated with water. The syngas is then treated in an acid gas removal unit as desired to remove any impurities in the syngas. After processing the syngas in the AGR, it is routed to a hydrocarbon synthesis reactor. In the hydrocarbon synthesis reactor, the bulk of the H2and CO in the syngas is converted to synthetic hydrocarbons, the makeup of which is generally dependent on the type catalyst used in the reactor. The unreacted gas, or tailgas, exiting the reactor, is sent to the gas turbine as fuel. Optionally, N2 or natural gas can be added to the tailgas prior to the combustion turbine. N2 may also optionally be mixed with the hydrocarbon synthesis reactor feed to help control the reaction temperature. After being combusted in the combustor of a gas turbine, the combustion products are expanded to produce power. The expanded combustion products are then sent to a heat recovery steam generator (HRSG) to produce steam that can also be expanded to produce power.
대표청구항▼
1. A process for simultaneously generating power and synthesizing liquid hydrocarbons, comprising: partially oxidizing a hydrocarbon feed by reacting said feed with an oxygen-rich gas, thereby generating a synthesis gas mixture comprising carbon monoxide and hydrogen; purifying the synthesis gas
1. A process for simultaneously generating power and synthesizing liquid hydrocarbons, comprising: partially oxidizing a hydrocarbon feed by reacting said feed with an oxygen-rich gas, thereby generating a synthesis gas mixture comprising carbon monoxide and hydrogen; purifying the synthesis gas mixture; reacting at least a portion of said synthesis gas mixture over a hydrocarbon synthesis catalyst to produce hydrocarbon liquids and residue gas; separating said hydrocarbon liquids from said residue gas; reacting said residue gas along with the remaining synthesis gas with an oxygen containing gas to produce combustion product gases; expanding said combustion product gases through a turbine to generate power and to make expanded combustion product gases; making steam by cooling said expanded combustion product gases in a heat recovery steam generator; and expanding the steam in a steam turbine to generate power. 2. The process of claim 1, further comprising separating air to produce a nitrogen-rich fraction and said oxygen-rich gas. 3. The process of claim 2, further comprising mixing at least a portion of said nitrogen-rich fraction with said residue gas before expanding said residue gas. 4. The process of claim 2, further comprising controlling the temperature of a reactor containing said hydrocarbon synthesis catalyst by mixing at least a portion of said nitrogen-rich fraction with said synthesis gas mixture. 5. The process of claim 1, further comprising increasing the ratio of hydrogen to carbon monoxide in said synthesis gas mixture. 6. The process of claim 5, wherein increasing said ratio comprises passing said synthesis gas mixture over a water-gas shift catalyst to convert water vapor and carbon monoxide to hydrogen and carbon dioxide. 7. The process of claim 5, wherein increasing said ratio comprises mixing said synthesis gas mixture with a hydrogen-rich gas. 8. The process of claim 7, wherein said hydrogen-rich gas comprises effluent from a steam reformer. 9. The process of claim 1, wherein said synthesis gas mixture further comprises sulfur oxides, and said process further comprises the step of removing said sulfur oxides from said synthesis gas mixture. 10. The process of claim 9, further comprising recovering elemental sulfur from said sulfur oxides. 11. The process of claim 1, further comprising burning at least a portion of said hydrocarbon liquids to generate additional power. 12. The process of claim 1, further comprising blending at least a portion of said hydrocarbon liquids with a heavy hydrocarbons fraction selected from the group consisting of vacuum distillation bottoms, gas oil hydrocracker bottoms, light oil hydrotreater bottoms, petroleum coke and mixtures thereof. 13. The process of claim 1, further comprising extracting hydrogen from said synthesis gas mixture. 14. The process of claim 13, further comprising returning at least a portion of said extracted hydrogen to a reactor containing said hydrocarbon synthesis catalyst. 15. The process of claim 1, wherein said hydrocarbon synthesis catalyst comprises a Fischer-Tropsch catalyst. 16. The process of claim 15, wherein said hydrocarbon liquids comprise gasoline. 17. The process of claim 15, wherein said hydrocarbon liquids comprise diesel fuel. 18. The process of claim 1, wherein said hydrocarbon synthesis catalyst comprises a methanol synthesis catalyst. 19. The process of claim 1, wherein said hydrocarbon feed comprises coke. 20. The process of claim 1, wherein said hydrocarbon feed comprises coal.
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