Granted Patent
B2
US 12,528,044 · App. 18/060,092 · Granted Jan 20, 2026
Methods for capturing CO
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Abstract
A method for capturing carbon dioxide (CO 2 ) 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 CO 2 and oxygen (O 2 ). In the method, the humid gas stream is contacted with a metal organic framework (MOF) material KAUST-7. The CO 2 from the humid gas stream is captured with the KAUST-7 MOF material to generate a CO 2 -concentrated gas stream comprising approximately 1-30% of CO 2 .
Claims (11)
1 . A method for capturing CO 2 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 CO 2 and approximately 10-13% of O 2 ; and
capturing, with the MOF material KAUST-7, CO 2 from the humid NGCC exhaust stream to generate a CO 2 -concentrated gas stream comprising approximately 10-30% of CO 2 ,
wherein the relative humidity of the humid NGCC exhaust stream is approximately 45-75% at 20-85° C.
2 . The method of claim 1 , wherein the relative humidity of the humid NGCC exhaust stream is approximately 50-70% at 20-85° C.
3 . The method of claim 1 , wherein the relative humidity of the humid NGCC exhaust stream is approximately 55-65% at 20-85° C.
4 . The method of claim 1 , wherein the balance of the humid NGCC exhaust stream is N 2 .
5 . The method of claim 1 , wherein the CO 2 is captured with the MOF material KAUST-7 at a temperature in the range of approximately 20-85° C. and a pressure in the range of approximately 1-5 bar.
6 . The method of claim 1 , wherein the MOF material KAUST-7 is in the form of pellets, laminates, or other structured forms.
7 . The method of claim 1 , wherein the MOF material KAUST-7 is pretreated at a temperature in the range of approximately 60-150° C. under dynamic vacuum or dry inert gas to remove any previously adsorbed molecules.
8 . The method of claim 1 , wherein the MOF material KAUST-7 comprises an organic binder or an inorganic binder.
Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 30, 2022
From: JAMAL, AQIL
To: SAUDI ARABIAN OIL COMPANY
Reel/Frame 061920/0549 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 30, 2022
From: EDDAOUDI, MOHAMED; BHATT, PRASHANT
To: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
Reel/Frame 061920/0717 →
Continuity (1)
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