CO2 Capture from Flue Gas by Phase Transitional Absorption
Project No.: FG26-05NT42488


Basic Illustration of the Phase Transitional Absorption Process.

Basic Illustration of the
Phase Transitional Absorption Process.

Hampton University researched a novel carbon dioxide (CO2) absorption concept, phase transitional absorption, that utilizes a two-part proprietary absorbent consisting of an activated agent dissolved in a solvent. Phase separation of the activated agent from the chemical solvent occurs during CO2 absorption and physical separation of the two phases exiting the absorber reduces the volume of process liquid requiring thermal regeneration. This unique aspect of phase transitional absorption also decreases the amount of energy (i.e., steam) required to liberate the CO2. If the proper liquid phases are selected, the absorption rate of CO2 may also be enhanced. Following regeneration, the activated agent and solvent are mixed and recycled back to the CO2 absorber vessel. Researchers will investigate the effects of liquid phase ratios, temperature, agitation speed, CO2 partial pressure, liquid holdup, and the gas-liquid interface.

Related Papers and Publications:


  • For further information on this project, contact the NETL Project Manager, I. Andrew Aurelio.