Methods for capturing co2 from dilute co2 streams of varying humidity, including natural gas combine cycle exhaust streams and ambient air streams using kaust-7 based physisorbents
AssigneesSaudi Arabian Oil Company, King Abdullah University of Science and Technology
InventorsMohamed EDDAOUDI, Prashant BHATT, Aqil JAMAL
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Abstract
A method for capturing carbon dioxide (CO2) from a humid gas stream is provided. In certain embodiments, the gas stream is a humid natural gas combine cycle (NGCC) exhaust stream. In certain embodiments, the gas stream is a humid air stream. The humid gas stream comprises CO2 and oxygen (O2). In the method, the humid gas stream is contacted with a metal organic framework (MOF) material KAUST-7. The CO2 from the humid gas stream is captured with the KAUST-7 MOF material to generate a CO2-concentrated gas stream comprising approximately 1-30% of CO2.
Claims17
A method for capturing CO2 from a humid natural gas combine cycle (NGCC) exhaust stream, comprising:
- contacting the humid NGCC exhaust stream with a metal organic framework (MOF) material KAUST-7, wherein the humid NGCC exhaust stream comprises approximately 1 to 5% of CO2 and approximately 10-13% of O2;
- and
- capturing, with the MOF material KAUST-7, CO2 from the humid NGCC exhaust stream to generate a CO2-concentrated gas stream comprising approximately 10-30% of CO2,
- wherein the relative humidity of the humid NGCC exhaust stream is approximately 45-75% at 20-85° C.
A method for capturing CO2 from a humid air stream, comprising:
- contacting the humid air stream with a metal organic framework (MOF) material KAUST-7, wherein the humid air stream comprises approximately 400-1000 ppm of CO2 and approximately 20-25% of O2;
- and
- capturing, with the MOF material KAUST-7, CO2 from the humid air stream to generate a CO2-concentrated gas stream comprising approximately 1-30% of CO2,
- wherein the relative humidity of the humid air stream is approximately 5-75% at 0-55° C.
Dependencies are inferred from the claim text.