Methods for applying microchannels to separate methane using liquid absorbents, especially ionic liquid absorbents from a mixture comprising methane and nitrogen
First Claim
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1. A method for separating gaseous components comprising the steps of:
- contacting a gaseous mixture including methane with an ionic liquid by flowing the gaseous mixture and the ionic liquid through a microchannel;
absorbing at least a portion of the methane of the gaseous mixture by the ionic liquid, thereby creating a resultant mixture including a resultant gas and the ionic liquid;
directing the resultant gas away from the ionic liquid; and
desorbing at least a portion of the methane from the ionic liquid by changing the temperature of the ionic liquid.
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Abstract
Methods of using microchannel separation systems including absorbents to improve thermal efficiency and reduce parasitic power loss. Energy is typically added to desorb methane and then energy or heat is removed to absorb methane using a working solution. The working solution or absorbent may comprise an ionic liquid, or other fluids that demonstrate a difference in affinity between methane and nitrogen in a solution.
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Citations
22 Claims
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1. A method for separating gaseous components comprising the steps of:
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contacting a gaseous mixture including methane with an ionic liquid by flowing the gaseous mixture and the ionic liquid through a microchannel; absorbing at least a portion of the methane of the gaseous mixture by the ionic liquid, thereby creating a resultant mixture including a resultant gas and the ionic liquid; directing the resultant gas away from the ionic liquid; and desorbing at least a portion of the methane from the ionic liquid by changing the temperature of the ionic liquid. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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5. The method of claim further comprising the step of changing the temperature of the ionic liquid prior to the step of absorbing at least a portion of the methane.
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22. The method of claim wherein the gaseous mixture includes carbon dioxide.
Specification