Thermally linked molecular sieve beds for CO2 removal
First Claim
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1. A carbon dioxide (CO2) removal system comprising:
- first and second sorbent beds, each of the sorbent beds having a molecular sieve sorbent for adsorbing or desorbing CO2;
wherein one of the sorbent beds adsorbs CO2, the other of the sorbent beds desorbs CO2, and the first and second sorbent beds are thermally connected to transfer heat exothermically generated by the sorbent bed adsorbing CO2 to the sorbent bed desorbing CO2.
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Abstract
A carbon dioxide (CO2) removal system includes a first sorbent bed and a second sorbent bed. Each of the first and second sorbent beds has a molecular sieve sorbent for adsorbing or desorbing CO2. One of the sorbent beds adsorbs CO2 and the other of the sorbent beds desorbs CO2. The first and second sorbent beds are thermally connected to transfer heat between the sorbent beds.
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Citations
21 Claims
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1. A carbon dioxide (CO2) removal system comprising:
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first and second sorbent beds, each of the sorbent beds having a molecular sieve sorbent for adsorbing or desorbing CO2; wherein one of the sorbent beds adsorbs CO2, the other of the sorbent beds desorbs CO2, and the first and second sorbent beds are thermally connected to transfer heat exothermically generated by the sorbent bed adsorbing CO2 to the sorbent bed desorbing CO2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for removing carbon dioxide (CO2) from a process air stream, the system comprising:
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a first sorbent bed having a first molecular sieve; a second sorbent bed having a second molecular sieve, wherein the second sorbent bed is thermally connected to the first sorbent bed; an inlet passage connectable to the first sorbent bed and the second sorbent bed; an inlet valve connected to the inlet passage and switchable between a first position and a second position; an outlet passage connectable to the first sorbent bed and the second sorbent bed; an outlet valve connected to the outlet passage and switchable between a first position and a second position; a carbon dioxide passage connectable to the first sorbent bed and the second sorbent bed; and a carbon dioxide valve connected to the carbon dioxide passage and switchable between a first position and a second position; wherein heat generated exothermically by adsorption of CO2 is transferred between the first sorbent bed and the second sorbent bed. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method for removing carbon dioxide (CO2) from a process air stream, the method comprising:
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supplying the process air stream to a first molecular sieve and a second molecular sieve to cause CO2 to be adsorbed and removed from the process air stream; reducing a pressure of one of the first and second molecular sieves to cause CO2 to be desorbed and removed from the first and second molecular sieves so that that one of the first and second molecular sieves is adsorbing and the other molecular sieve is desorbing; and transferring exothermically generated heat from the molecular sieve that is adsorbing to the molecular sieve that is desorbing. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification