(218e) Oxy-Coal Combustion Using Oxygen Transport Membranes

Praxair, Inc. has developed an Oxygen Transport Membrane (OTM) technology that facilitates separation of oxygen from air through use of an oxygen partial pressure difference across the membrane. This membrane has been placed on a ceramic tube support for the purpose of in-situ oxygen generation in combustion devices. The efficacy of the OTM approach has been previously demonstrated for the firing of natural gas and CO/H2 mixtures by Praxair, Inc., and Praxair has teamed with the University of Utah to determine the viability of OTM operation with coal.

The University of Utah (UofU) has completed construction and shakedown of a bench-scale OTM coal reactor. This presentation will discuss the development of this reactor and present the results of initial testing with both gaseous and solid fuels.