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US 11,456,474 B2Granted
Integrated power generation, carbon dioxide separation and downstream processing system and method
AssigneeBloom Energy Corporation
InventorsArne Ballantine, Jayakumar Krishnadass, Chockkalingam Karuppaiah
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Abstract
An integrated power generation and exhaust processing system includes a fuel cell system configured to generate power and to separate CO2 included in exhaust output from the fuel cell system, and an exhaust processing system configured to at least one of sequester or densify CO2 separated from the exhaust output from the fuel cell system.
Claims18
An integrated power generation and exhaust processing system comprising:
- a fuel cell system configured to generate power and to separate CO2 included in exhaust output from the fuel cell system;
- and
- an exhaust processing system configured to at least one of sequester or densify CO2 separated from the exhaust output from the fuel cell system,
- wherein the fuel cell system comprises a solid oxide fuel cell stack configured to generate the power, and a carbon dioxide separation device configured to separate the CO2 included in the exhaust output from the fuel cell system.
1 more element
A method of operating a fuel cell system, comprising:
- providing a fuel to a fuel cell system;
- operating the fuel cell system to generate power and a fuel exhaust stream;
- separating CO2 from the fuel exhaust stream using a carbon dioxide separation device to generate a CO2 containing exhaust and a purified exhaust;
- providing the separated CO2 containing exhaust to an exhaust processing system;
- at least one of sequestering or densifying CO2 in the CO2 containing exhaust using the exhaust processing system,
- condensing water from the CO2 containing exhaust;
- compressing the CO2 in the CO2 containing exhaust;
- and
- heating a fuel provided to the fuel cell system using heat generated from at least one of the condensing or the compressing.
6 more elements
A method of operating a fuel cell system, comprising:
- providing a fuel to a fuel cell system;
- operating the fuel cell system to generate power and a fuel exhaust stream;
- separating CO2 from the fuel exhaust stream using a carbon dioxide separation device to generate a CO2 containing exhaust and a purified exhaust;
- providing the separated CO2 containing exhaust and solid CaO to a NaOH containing solution, such that the CO2 gas reacts with the NaOH (l) to form Na2CO3 (l) and water, such that the CaO (s) reacts with the water to form Ca(OH)2 (l), and such that the Na2CO3 (l) and the Ca(OH)2 (l) react to precipitate solid CaCO3 and generate NaOH (l);
- and
- recycling the generated NaOH (l) to react with additional CO2 gas.
3 more elements
Dependencies are inferred from the claim text.