OTM-Based Oxycombustion for CO2 Recovery
Project Number: FC26-01NT41147 & FC26-07NT43088
Praxair Advanced Boiler.
Praxair, Inc. will conduct two projects to develop and demonstrate
the integration of a novel, ceramic oxygen transport membrane (OTM)
with the combustion process to enhance boiler efficiency. The economics
of oxy-combustion processes are currently limited by the parasitic
power required for oxygen (O2) production using cryogenic
air separation units (ASU). OTMs can be integrated such that there is
minimal need for air compression and the parasitic power consumption
required for O2 production is reduced by 70 to 80 percent as compared to a cryogenic ASU.
Praxair will design, construct, and operate a bench-scale OTM at the
University of Utah to evaluate performance in a coal-based power
system, conduct manufacturing process development at their OTM pilot
manufacturing facility, and evaluate OTM performance improvements in
single- and multi-tube OTM reactors. These reactors will be based on
initial analysis that will identify the optimal design for the most
promising OTM materials for a laboratory-scale boiler simulator.
Integration of OTM technology to support oxy-combustion will significantly reduce the complexity of CO2 capture by providing a highly-concentrated, sequestration-ready stream of CO2
without costly cryogenic ASU operation. This technology will result in
a much lower volume of flue gas and, therefore, higher thermal
efficiency, lower cost of electricity, and lower emissions compared to
Related Papers and Publications:
- For further information on this project, contact the NETL Project Manager, Steven Richardson.