URS Group, in collaboration with the University of Texas and Trimeric Corporation, will investigate the use of concentrated piperazine (PZ) as a solvent for absorbing CO2 from coal-fired power plant flue gas while employing a novel, high-temperature, two-stage flash regeneration design. The project objectives are to quantify and validate the robustness of concentrated PZ in an integrated absorption/stripping system with solvent regeneration at 150°C; optimize the equipment design and energy performance of the two-stage flash system; and identify and resolve other potential operational and design issues including process control, corrosion, foaming, and solids precipitation. The project results will be used to evaluate the technical and economic feasibility of a full-scale implementation of this process. Previous evaluations of concentrated PZ have indicated greater than 90% capture with significant progress toward the Department of Energy’s (DOE’s) cost of electricity goal. This project continues the development of the PZ-based CO2absorption process through field tests at the University of Texas’ Separations Research Program plant and DOE's National Carbon Capture Center.
Presentations_plp
- Evaluation of Piperazine with Advanced Flash Regeneration for CO2 Capture from Coal-Fired Flue Gas[PDF] (August 2017)
Presented by Gary Rochelle, University of Texas at Austin, 2017 NETL CO2 Capture Technology Project Review Meeting, Pittsburgh, PA
- Evaluation of Piperazine with Advanced Flash Regeneration for CO2 Capture from Coal-Fired Flue Gas[PDF] (August 2016)
Presented by Gary Rochelle, University of Texas at Austin, 2016 NETL CO2 Capture Technology Project Review Meeting, Pittsburgh, PA
- Pilot Plant Testing of Piperazine with High T Regeneration [PDF] (June 2015)
Presented by Katherine Dombrowski, AECOM, 2015 NETL CO2 Capture Technology Meeting, Pittsburgh, PA
- Pilot Plant Testing of Piperazine with High T Regeneration [PDF] (July 2014)
Presented by Gary Rochelle, University of Texas at Austin, 2014 NETL CO2 Capture Technology Meeting, Pittsburgh, PA
- Pilot Plant Testing of Piperazine with High T Regeneration [PDF] (July 2013)
Presented by Gary Rochelle, University of Texas at Austin, 2013 NETL CO2 Capture Technology Meeting, Pittsburgh, PA
- Pilot Plant Testing of Piperazine with High T Regeneration [PDF] (July 2012)
Presented by Gary Rochelle, University of Texas at Austin, 2012 NETL CO2 Capture Technology Meeting, Pittsburgh, PA
- Evaluation of Concentrated Piperazine for CO2 Capture from Coal-Fired Flue Gas Fact Sheet [PDF] (Oct 2011)
- Evaluation of Concentrated Piperazine for CO2 Capture from Coal-Fired Flue Gas [PDF] (Aug 2011)
Presented by Andrew Sexton, Trimeric Corporation, 2011 NETL CO2 Capture Technology Meeting, Pittsburgh, PA
- Evaluation of Concentrated Piperazine for CO2 Capture from Coal-Fired Flue Gas [PDF] (Sept 2010)
Presented by URS Corporation, 2010 Annual NETL CO2 Capture Technology R&D Meeting, Pittsburgh, PA
- CO2 Capture Technology Status Sheet
Principal Investigator
Katherine Dombrowski
katherine.dombrowski@URScorp.com
Project Benefits
This project focuses on mitigating capture cost and performance impacts using a concentrated PZ solvent. Concentrated PZ offers higher working capacity, thermal stability, and stripper pressure; faster CO2absorption; and less oxidative degradation to decrease compressor requirements as well as capital and operating costs. Specifically, this project will involve bench-scale process testing followed by scale up to the 0.5 MWe scale.
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