Carbon dioxide scrubber for fuel and gas emissions
First Claim
1. A system of removing carbon dioxide (CO 2) from a gas stream produced in energy extracting systems comprising:
- a CO2 sorbent bed containing an amine/nitrile CO2 sorbent, wherein a major portion of the amine portion of said sorbent is formed from secondary amine groups, and at least one functional nitrile group;
a conduit for communicating a source of gas containing CO2 with said sorbent bed, a conduit for communicating said sorbent bed with an outlet, a regeneration device for evolving CO2 from said CO2 sorbent bed, and at least one valve disposed to control a flow of said gas into and out of said sorbent bed, wherein said gas stream is produced by burning of fossil fuels.
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Accused Products
Abstract
A system and method for controlling carbon dioxide (CO2) emissions emanating from a gas source includes a CO2 sorbent bed containing a regenerable sorbent. Exhaust gases flow through the CO2 sorbent bed before being released into the atmosphere. The CO2 sorbent bed traps CO2 contained within the exhaust gas to control the amount of CO2 finally exhausted to the atmosphere. At least two CO2 sorbent beds are used such that while one is absorbing CO2 from the gas stream another is being regenerated. The CO2 sorbent bed is regenerated to release the trapped CO2 for disposal or use in other processes. The CO2 sorbent beds are cycled between absorbing CO2 and regenerating to optimize absorption of CO2.
112 Citations
21 Claims
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1. A system of removing carbon dioxide (CO 2) from a gas stream produced in energy extracting systems comprising:
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a CO2 sorbent bed containing an amine/nitrile CO2 sorbent, wherein a major portion of the amine portion of said sorbent is formed from secondary amine groups, and at least one functional nitrile group;
a conduit for communicating a source of gas containing CO2 with said sorbent bed, a conduit for communicating said sorbent bed with an outlet, a regeneration device for evolving CO2 from said CO2 sorbent bed, and at least one valve disposed to control a flow of said gas into and out of said sorbent bed, wherein said gas stream is produced by burning of fossil fuels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 14)
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8. A system of removing carbon dioxide (CO2) from a gas stream produced in energy extracting systems comprising:
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a CO2 sorbent bed containing an amine/nitrile CO2 sorbent, wherein a major portion of the amine portion of said sorbent is formed from secondary amine groups and at least one functional nitrile group;
a conduit for communicating a source of gas containing CO2 with said sorbent bed, a conduit for communicating said sorbent bed with an outlet, a regeneration device for evolving CO2 from said CO2 sorbent bed, said regenerative device includes a steam source, said steam source emitting steam into said sorbent bed to drive absorbed CO2 from said sorbent bed; and
at least one valve disposed to control a flow of said gas into and out of said sorbent bed.
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11. A system of removing carbon dioxide (CO2) from a gas produced in energy extracting systems comprising:
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a CO2 sorbent bed containing an amine/nitrile CO2 sorbent, wherein a major portion of the amine portion of said sorbent is formed from secondary amine groups, and at least one functional nitrile group;
a conduit for communicating a source of gas containing CO2 with said sorbent bed, a conduit for communicating said sorbent bed with an outlet, a regeneration device for evolving CO2 from said CO2 sorbent bed, and at least one valve disposed to control a flow of said gas stream into and out of said sorbent bed, wherein said gas stream emanates from a natural gas well.
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12. A system of removing carbon dioxide (CO2) from a gas stream produced in energy extracting systems comprising:
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a CO2 sorbent bed containing an amine/nitrile CO2 sorbent, wherein a major portion of the amine portion of said sorbent is formed from secondary amine groups, and at least one functional nitrile group;
a conduit for communicating a source of gas containing CO2 with said sorbent bed, a conduit for communicating said sorbent bed with an outlet, a regeneration device for evolving CO2 from said CO2 sorbent bed, at least one valve disposed to control a flow of said gas into and out of said sorbent bed; and
a cooling system operably associated with said sorbent bed to maintain a predetermined temperature within said sorbent bed during absorption of said CO2.
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13. A system of removing carbon dioxide (CO2) from a gas stream produced in energy extracting systems comprising:
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a CO2 sorbent bed containing an amine/nitrile CO2 sorbent, wherein a major portion of the amine portion of said sorbent is formed from secondary amine groups, and at least one functional nitrile group;
a conduit for communicating a source of gas containing CO2 with said sorbent bed, a conduit for communicating said sorbent bed with an outlet, a regeneration device for evolving CO2 from said CO2 sorbent bed;
at least one valve disposed to control a flow of said gas into and out of said sorbent bed; and
a storage tank in operable communication with said sorbent bed and controlled by said at least one valve such that CO2 evolved from said sorbent bed is drawn into said storage tank.
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15. A method for removing carbon dioxide (CO2) from a gas containing CO2 extracted from an energy producing system, said method including the steps of:
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a. communicating a at least two CO2 sorbent beds containing an amine/nitrile CO2 sorbert, wherein a major portion of the amine portion of said sorbent is formed from secondary amine groups, and at least one functional nitrile group with the gas containing CO2by placing one of said two sorbert beds within the flow of gas until reaching the predetermined concentration of CO2;
b. absorbing CO2 contained within the gas with the sorbent bed;
c. concentrating said CO2 within said sorbent bed, and d. expelling said CO2 from said sorbent bed upon reaching a predetermined concentration level of CO2 by applying steam at a temperature above a predetermined temperature to release said CO2 from said sorbent bed. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification