University of Kentucky Research Foundation

Reynolds A Frimpong

Kunlei Liu

Xin Gao

Ayokunle Omosebi

Kun Liu

An apparatus for removing an acid gas from a feed gas stream includes an absorber and an electrochemical regenerator. The absorber is adapted for separating the acid gas from the feed gas feed stream using a lean carbon capture solvent. The electrochemical regenerator is connected to the absorber and adapted for (a) regenerating the carbon capture solvent and (b) generating hydrogen gas. A method for removing acid gas from a feed gas stream includes steps of separating, delivering, releasing, generating and returning.

Electrochemical apparatus for acid gas removal and hydrogen generation

A process for recovery of COfrom a post-combustion gas includes pre-concentrating a COcomponent of the post-combustion flue gas by passing the post-combustion gas through a CO-selective membrane module to provide a CO-enriched permeate stream and a CO-lean reject stream. Next, in a COabsorber, both the CO-enriched permeate stream and COlean reject stream, fed to separate feed locations on the COabsorber, are contacted with a scrubbing solvent to absorb COand provide a carbon-rich scrubbing solvent. Finally, absorbed COis stripped from the carbon-rich scrubbing solvent by a two-stage COstripping system. The CO-selective membrane may be a high flux, low pressure drop, low COselectivity membrane. The two stage stripping system includes a primary COstripping column for stripping COfrom the carbon-rich scrubbing solvent exiting the COabsorber, and a secondary COstripping column for stripping COfrom a carbon-lean scrubbing solvent exiting the primary COstripping column. Apparatus for COremoval from post-combustion gases in a pulverized coal power plant incorporating the described processes are described.

Growing community of inventors

Lexington, KY, United States of America

Reynolds A Frimpong