IP Library › Patent Application 19046432
Patent Application
App. No. 19/046,432

FUEL CELL EXHAUST GAS PROCESSING

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Quick Facts
Patent No.
US None
App. No.
19/046,432
Abstract

A solid oxide fuel cell may receive a natural gas feedstock. The fuel cell may include process the natural gas feedstock to generate electrical energy. Exhaust gases, generated as a byproduct of processing the natural gas feedstock to generate the electrical energy, may include water vapor, carbon dioxide, hydrogen, carbon monoxide, and nitrogen. Amounts of the water vapor and the carbon dioxide are higher relative to amounts of the hydrogen, the carbon monoxide, and the nitrogen. A fuel cell exhaust gas processing system may process the exhaust gases to produce treated exhaust gases. Amounts of hydrogen and carbon monoxide are higher relative to amounts of water vapor, carbon dioxide, and nitrogen included in the treated exhaust gases.

Claims (97)

1 . A system, comprising:

a solid oxide fuel cell configured to:

receive a natural gas feedstock, and

process the natural gas feedstock to generate electrical energy,

wherein exhaust gases, generated as a byproduct of processing the natural gas feedstock to generate the electrical energy, includes water vapor, carbon dioxide, hydrogen, carbon monoxide, and nitrogen, and

wherein amounts of the water vapor and the carbon dioxide are higher relative to amounts of the hydrogen, the carbon monoxide, and the nitrogen;

a cooling device configured to:

receive the exhaust gases,

cool the exhaust gases to produce cooled exhaust gases,

wherein cooling the exhaust gases condenses a portion of the water vapor in the exhaust gases, and

output the cooled exhaust gases;

a compression device configured to:

receive the cooled exhaust gases,

compress the cooled exhaust gases to produce compressed exhaust gases, and output the compressed exhaust gases; and

a carbon capture device configured to:

receive the compressed exhaust gases,

capture a portion of carbon dioxide from the compressed exhaust gases to produce treated exhaust gases, and

output the treated exhaust gases,

wherein amounts of the hydrogen and the carbon monoxide are higher relative to amounts of the water vapor, the carbon dioxide, and the nitrogen.

2 . The system of claim 1 , further comprising:

a fischer-tropsch reactor device configured to:

receive the compressed exhaust gases and process the compressed exhaust gases to generate liquid hydrocarbons.

3 . The system of claim 1 , further comprising:

a water gas shift device configured to:

receive the compressed exhaust gases,

process the compressed exhaust gases to produce hydrogen-enriched gases, and

output the hydrogen-enriched gases; and

a pressure swing adsorption device configured to:

receive the hydrogen-enriched gases and process the hydrogen-enriched gases to generate hydrogen.

4 . The system of claim 3 , further comprising:

an ammonia converter device configured to:

receive the hydrogen and react the hydrogen with nitrogen to generate ammonia.

5 . The system of claim 1 , further comprising:

a methanol synthesis device configured to:

receive the treated exhaust gases and process the treated exhaust gases to generate methanol.

6 . The system of claim 1 , further comprising:

a dry methane reformer device configured to:

receive the compressed exhaust gases,

process the exhaust gases to produce reformed exhaust gases, and

output the reformed exhaust gases;

a carbon capture device configured to:

receive the reformed exhaust gases,

capture a portion of the carbon dioxide from the reformed exhaust gases to produce treated reformed exhaust gases, and

output the treated reformed exhaust gases; and

at least one of:

a fischer-tropsch reactor device configured to:

receive the treated reformed exhaust gases and process the treated reformed exhaust gases to generate liquid hydrocarbons, or

a pressure swing adsorption device configured to:

receive the treated reformed exhaust gases and process the treated reformed exhaust gases to generate carbon monoxide and hydrogen.

7 . The system of claim 1 , wherein a hydrogen-to-carbon ratio of the hydrogen and carbon monoxide, included in the treated exhaust gases, is approximately 2:1.

8 . A method, comprising:

receiving, by a solid oxide fuel cell, a natural gas feedstock,

processing, by the solid oxide fuel cell, the natural gas feedstock to generate electrical energy,

wherein exhaust gases, generated as a byproduct of processing the natural gas feedstock to generate the electrical energy, includes water vapor, carbon dioxide, hydrogen, carbon monoxide, and nitrogen, and

wherein amounts of the water vapor and the carbon dioxide are higher relative to amounts of the hydrogen, the carbon monoxide, and the nitrogen;

cooling, by a cooling device, the exhaust gases to condense a portion of the water vapor in the exhaust gases to produce cooled exhaust gases,

compressing, by a compression device, the cooled exhaust gases to produce compressed exhaust gases;

capturing, by a carbon capture device, a portion of carbon dioxide from the compressed exhaust gases to produce treated exhaust gases,

wherein amounts of the hydrogen and the carbon monoxide are higher relative to amounts of the water vapor, the carbon dioxide, and the nitrogen.

9 . The method of claim 8 , further comprising:

processing, by a fischer-tropsch reactor device, the treated exhaust gases to generate liquid hydrocarbons.

10 . The method of claim 8 , further comprising:

processing, by a water gas-shift device, the treated exhaust gases to produce hydrogen-enriched gases; and

processing, by a pressure swing adsorption device, the hydrogen-enriched gases to generate hydrogen.

11 . The method of claim 10 , further comprising:

reacting, by an ammonia converter device, the hydrogen with nitrogen to generate ammonia.

12 . The method of claim 8 , further comprising:

processing, by a methanol synthesis device, the treated exhaust gases to generate methanol.

13 . The method of claim 8 , further comprising:

processing, by a dry methane reformer device, the compressed exhaust gases to produce reformed exhaust gases;

processing, by a carbon capture device, the reformed exhaust gases to capture a portion of the carbon dioxide from the reformed exhaust gases to produce treated reformed exhaust gases; and

processing, by a pressure swing adsorption device, the treated reformed exhaust gases to generate carbon monoxide and hydrogen.

14 . The method of claim 8 , wherein a hydrogen-to-carbon ratio of the hydrogen and carbon monoxide, included in the treated exhaust gases, is approximately 2:1.

15 . A non-transitory computer-readable medium storing a set of instructions, the set of instructions comprising:

one or more instructions that, when executed by one or more processors of a device, cause the device to:

cause a solid oxide fuel cell to receive a natural gas feedstock, and process the natural gas feedstock to generate electrical energy,

wherein exhaust gases, generated as a byproduct of processing the natural gas feedstock to generate the electrical energy, includes water vapor, carbon dioxide, hydrogen, carbon monoxide, and nitrogen, and

wherein amounts of the water vapor and the carbon dioxide are higher relative to amounts of the hydrogen, the carbon monoxide, and the nitrogen;

cause a cooling device to receive the exhaust gases, cool the exhaust gases to condense a portion of the water vapor in the exhaust gases to produce cooled exhaust gases, and output the cooled exhaust gases;

cause a compression device to receive the cooled exhaust gases, compress the cooled exhaust gases to produce compressed exhaust gases, and output the compressed exhaust gases; and

cause a carbon capture device to receive the compressed exhaust gases, capture a portion of carbon dioxide from the compressed exhaust gases to produce treated exhaust gases, and output the treated exhaust gases,

wherein amounts of the hydrogen and the carbon monoxide are higher relative to amounts of the water vapor, the carbon dioxide, and the nitrogen.

16 . The non-transitory computer-readable medium of claim 15 , wherein the one or more instructions that, when executed by the one or more processors of the device, further cause the device to:

cause a fischer-tropsch reactor device to receive the compressed exhaust gases and process the compressed exhaust gases to generate liquid hydrocarbons.

17 . The non-transitory computer-readable medium of claim 15 , wherein the one or more instructions that, when executed by the one or more processors of the device, further cause the device to:

cause a water gas shift device to receive the compressed exhaust gases, process the compressed exhaust gases to produce hydrogen-enriched gases, and output the hydrogen-enriched gases; and

cause a pressure swing adsorption device to receive the hydrogen-enriched gases and process the hydrogen-enriched gases to generate hydrogen.

18 . The non-transitory computer-readable medium of claim 17 , wherein the one or more instructions that, when executed by the one or more processors of the device, further cause the device to:

cause an ammonia converter device to receive the hydrogen and react the hydrogen with nitrogen to generate ammonia.

19 . The non-transitory computer-readable medium of claim 15 , wherein the one or more instructions that, when executed by the one or more processors of the device, further cause the device to:

cause a methanol synthesis device to receive the treated exhaust gases and process the treated exhaust gases to generate methanol.

20 . The non-transitory computer-readable medium of claim 15 , wherein the one or more instructions that, when executed by the one or more processors of the device, further cause the device to:

cause a dry methane reformer device to receive the compressed exhaust gases, process the exhaust gases to produce reformed exhaust gases, and output the reformed exhaust gases;

cause a carbon capture device to receive the reformed exhaust gases, capture a portion of the carbon dioxide from the reformed exhaust gases to produce treated reformed exhaust gases, and output the treated reformed exhaust gases; and

cause at least one of:

a fischer-tropsch reactor device to receive the treated reformed exhaust gases and process the treated reformed exhaust gases to generate liquid hydrocarbons, or

a pressure swing adsorption device to receive the treated reformed exhaust gases and process the treated reformed exhaust gases to generate carbon monoxide and hydrogen.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 5, 2025
From: WINGO, ROBERT R.; MCCANN, JAMES P.; GIRGIS, ALBERT T.; STARCK, MICHAEL F.
To: EQT CORPORATION
Reel/Frame 071027/0199 →