Post-Combustion

A Low-Cost, High-Capacity Regenerable Sorbent for CO2 Capture From Existing Coal-Fired Power Plants
Project No.: DE-FE0007580

TDA Research, Inc is developing a low cost, high capacity CO2 adsorbent and demonstrating its technical and economic viability for post-combustion CO2 capture for existing pulverized coal-fired power plants. TDA is using an advanced physical adsorbent to selectively remove CO2 from flue gas. The sorbent exhibits a much higher affinity to adsorb CO2 than N2, H2O or O2, enabling effective CO2 separation from the flue gas. The sorbent binds CO2 more strongly than common adsorbents, providing the chemical potential needed to remove the CO2, however, because CO2 does not form a true covalent bond with the surface sites, regeneration can be carried out with only a small energy input. The heat input to regenerate the sorbent is only 4.9 kcal per mol of CO2, which is much lower than that for chemical absorbents or amine based solvents.

 Schematic representation of temperatures and pressures associated with the TDA capture process. 
Schematic representation of temperatures and pressures 
associated with the TDA capture process.

Related Papers and Publications:

Contacts:

  • For further information on this project, contact the NETL Project Manager, Andrew O’Palko.
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