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US 8,940,261 B2Granted
Contaminant-tolerant solvent and stripping chemical and process for using same for carbon capture from combustion gases
AssigneeUniversity of Kentucky Research Foundation
InventorsKunlei Liu, James Kyle Neathery, Joseph Eugene Remias
Life of this patent
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Abstract
A contaminant-tolerant hybrid scrubbing solvent is provided for post-combustion CO2 capture and removal, the scrubbing solvent including an amine and a low fraction of ammonia. A stripping carrier having a low latent energy is included for solvent regeneration. In one embodiment, the amine is MEA and the stripping chemical having low latent energy is pentane or an isomer thereof. Processes and apparatus for CO2 removal from post-combustion gases and for solvent regeneration are described.
Claims7
A process for removal of CO2 from a post-combustion gas, including:
- a scrubbing step comprising contacting said post-combustion gas with a scrubbing solvent comprising an amine and up to 3 wt % of ammonia to absorb CO2 and provide a carbon-rich scrubbing solvent;
- and
- a stripping step comprising contacting said carbon-rich scrubbing solvent with a stripping carrier having a low latent heat energy to provide a carbon-lean scrubbing solvent;
- wherein the stripping carrier is one of n-pentane, iso-pentane, or n-hexane.
1 more element
Dependencies are inferred from the claim text.