Dry Regenerable Sorbents
Project No.: FC26-07NT43089
Schematic of RTI’s Dry Carbonate Process
(click image to enlarge)
Research Triangle Institute (RTI) International completed two projects, NT43089 and NT40923, to investigate the use of sodium carbonate (Na2CO3 or soda ash) as an inexpensive, dry, and regenerable sorbent for carbon dioxide (CO2) capture in the Dry Carbonate Process. In this process, Na2CO3 reacts with CO2 and water to form sodium bicarbonate at the temperature of the flue gas exhaust; the sorbent is then regenerated at modest temperatures (~120°C) to yield a concentrated stream of CO2 for sequestration or other use. The regenerated sorbent is recycled to the absorption step for subsequent CO2 capture. See schematic of RTI’s Dry Carbonate Process.
Related Papers and Publications:
- Carbon Dioxide Capture From Flue Gas Using Dry Regenerable Sorbents (NT40923) Final Fact Sheet [PDF-386KB] (Mar 2011)
- Update on RTI's Dry Carbonate Process: Carbon Dioxide Capture from Power Plant Flue Gas [PDF-708KB] (May 2009)
Presented by RTI International, 8th Annual Conference on Carbon Capture and Sequestration, Pittsburgh, PA
- Carbon Dioxide Capture from Flue Gas Using Dry Regenerable Sorbents [PDF-4.1MB] (Jan 2009) Final Report
- The Dry Carbonate Process: Carbon Dioxide Recovery from Power Plant Flue Gas [PDF-1.1MB] (Mar 2009)
Presented by RTI International, Annual NETL CO2 Capture Technology for Existing Plants R&D Meeting, Pittsburgh, PA
- The Dry Carbonate Process: Carbon Dioxide Recovery from Power Plant Flue Gas [PDF-840KB] (May 2008)
Presented at the 7th Annual Conference on Carbon Capture and Sequestration, Pittsburgh, PA.
- The Dry Carbonate Sorbent Technology for CO2 Removal from Flue Gas of Existing Coal-Fired Power Plants [PDF-475KB] (Aug 2008)
Technical paper presented at the Power Plant Air Pollutant Control "Mega" Symposium, Baltimore, MD
- Development of a Dry Sorbent-Based Post Combustion CO2 Capture Technology for Retrofit in Existing Power Plants Fact Sheet [PDF] (Apr 2008)
- Carbon Dioxide Capture from Flue Gas Using Dry Regenerable Sorbents [PDF-906KB] (Nov 2004) Topical Report.
- CO2 Capture Technology Status Sheet
- For further information on this project, contact the NETL Project Manager, José D. Figueroa.