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US 8,784,532 B2Granted
Sorbent regeneration in a heated hollow-fiber assembly
AssigneePhillips 66 Company
InventorsImona C. Omole, George F. Schuette
Life of this patent
Estimating the term…
Abstract
Methods and apparatus relate to recovery of carbon dioxide and/or hydrogen sulfide from a gas mixture. Separating of the carbon dioxide, for example, from the gas mixture utilizes a liquid sorbent for the carbon dioxide. The liquid sorbent contacts the gas mixture for transfer of the carbon dioxide from the gas mixture to the liquid sorbent. The carbon dioxide then desorbs from the liquid sorbent using hollow-fiber contactors as a source of heat to liberate the carbon dioxide further separated by the hollow-fiber contactors from the liquid sorbent.
Claims17
A method, comprising:
- providing hollow-fiber contactors in a desorption unit where the hollow-fiber contactors are formed by spinning a composition doped with a conducting agent;
- passing a sorbent loaded with at least one of carbon dioxide and hydrogen sulfide along the hollow-fiber contactors of the desorption unit;
- and
- heating the sorbent by at least one of applying a voltage across the hollow-fiber contactors heated by electrical resistance and directing at least one of microwave and radiofrequency energy toward the hollow-fiber contactors which are heated upon absorbing the energy, wherein the heating of the sorbent through thermal contact with the hollow-fiber contactors which are heated results in absorbed gases including at least one of the carbon dioxide and the hydrogen sulfide being released from the sorbent and transferred across walls of the hollow-fiber contactors through pores of the hollow-fiber contactors to regenerate the sorbent.
1 more element
A method, comprising:
- passing a sorbent loaded with at least one of carbon dioxide and hydrogen sulfide along the hollow-fiber contactors of the desorption unit;
- and
- heating the sorbent by at least one of applying a voltage across the hollow-fiber contactors heated by electrical resistance and directing at least one of microwave and radiofrequency energy toward the hollow-fiber contactors which are heated upon absorbing the energy, wherein the heating of the sorbent through thermal contact with the hollow-fiber contactors which are heated results in absorbed gases including at least one of the carbon dioxide and the hydrogen sulfide being released from the sorbent and transferred across walls of the hollow-fiber contactors through pores of the hollow-fiber contactors to regenerate the sorbent;
- wherein current passes through a network of conductive material that is at least one of graphitic and metallic within the hollow-fiber contactors.
1 more element
A method, comprising:
- transferring carbon dioxide from a gas mixture to a liquid sorbent;
- transferring the carbon dioxide from the liquid sorbent into a sweep gas through a hollow-fiber contactor by heating the hollow-fiber contactors wherein the hollow-fiber contactors are formed by spinning a composition doped with a conducting agent and this step of transferring the carbon dioxide from the liquid sorbent into a sweep gas further includes providing a heat source in addition to phase separation;
- and
- condensing the sweep gas to separate the carbon dioxide transferred to the sweep gas;
- wherein current passes through a network of conductive material that is at least one of graphitic and metallic within the hollow-fiber contactors.
2 more elements
A method, comprising:
- transferring carbon dioxide from a gas mixture to a liquid sorbent;
- transferring the carbon dioxide from the liquid sorbent into a sweep gas through a hollow-fiber contactor by heating the hollow-fiber contactors wherein current passes through a network of conductive material that is at least one of graphitic and metallic within the hollow-fiber contactors and this step of transferring the carbon dioxide from the liquid sorbent into a sweep gas further includes providing a heat source in addition to phase separation;
- and
- condensing the sweep gas to separate the carbon dioxide transferred to the sweep gas.
1 more element
Dependencies are inferred from the claim text.