| 摘要 |
A SOFC system for producing a refined carbon dioxide product, electrical power, and a compressed hydrogen product is presented. The system can include a hydrodesulfurization system, a steam reformer, a water-gas shift reactor system, a hydrogen purification system, a hydrogen compression and storage system, a pre-reformer, and a CO2 purification and liquidification system. |
| 主权项 |
1. A solid oxide fuel cell (SOFC) system useful for producing a refined carbon dioxide product, electrical power suitable for electrically-powered vehicles and a compressed hydrogen product suitable for hydrogen fuel cell vehicles using steam and a hydrocarbon fuel, the SOFC system comprising:
a hydrodesulfurization system that fluidly couples to a hydrogen compression and storage system and is operable to receive a hydrocarbon fuel; a steam reformer having catalytic reactor tubes and a reformer combustion chamber, where the catalytic reactor tubes fluidly couple to the hydrodesulfurization system and are operable to receive superheated steam and where the reformer combustion chamber thermally couples to the catalytic reactor tubes, fluidly couples to both an outlet of an anode side of a solid oxide fuel cell and an oxygen generation system and is operable to receive the hydrocarbon fuel; a water-gas shift reactor system that fluidly couples to the reformer catalytic reactor tubes and is operable to convert carbon monoxide into carbon dioxide and hydrogen; a hydrogen purification system that fluidly couples to the water-gas shift reactor system and is operable to produce a purified hydrogen gas; a hydrogen compression and storage system that fluidly couples to the hydrogen purification system and is operable to produce a compressed hydrogen product; a pre-reformer that fluidly couples to the outlet of the anode side of the solid oxide fuel cell and is operable to receive the hydrocarbon fuel and to produce a pre-reformer syngas product; the solid oxide fuel cell having the anode side and is operable to produce electrical power, where the anode side has an inlet that fluidly couples to both the pre-reformer, the pre-reformer followed by a sorbent bed for removing hydrogen sulfide, and a pressure-swing adsorber (PSA) off-gas conduit of the hydrogen purification system and is operable to produce an anode exhaust gas, the anode side operable to receive a methane-rich anode feed gas without a reformer, the methane-rich anode feed gas comprising the pre-reformer syngas product and an off-gas stream from the hydrogen purification system, where the off-gas stream comprises methane, carbon oxides, and inert gases, where the methane-rich anode feed gas comprises methane, carbon oxides, hydrogen, and water, the anode side further operable to reform, by a reforming catalyst in the solid oxide fuel cell, and electrochemically convert methane and water contained in the methane-rich anode feed gas into hydrogen and carbon oxides to generate the electrical power; the oxygen generation system that is operable to produce oxygen; and a CO2 purification and liquidification system that fluidly couples to the reformer combustion chamber and is operable to produce a refined carbon dioxide product, where the oxygen generation system of the SOFC system includes an electrolysis cell that electrically couples to the solid oxide fuel cell and is operable to receive water and electrical power and to produce electrolysis hydrogen and electrolysis oxygen and the hydrogen compression and storage system also fluidly couples to the oxygen generation system, where the SOFC system is operable to have water introduced therein; and where the SOFC system is operable such that electrical power passes to the oxygen generation system such that the oxygen generation system produces both an electrolysis oxygen and an electrolysis hydrogen separately; and the electrolysis hydrogen passes to the hydrogen compression and storage system. |
