Abstract
O 2 lancing is one of the industrial techniques for implementing oxygen-enhanced combustion (OEC), and can potentially result in stable combustion with reduced NO x emissions. The key technical challenge facing lancing (and OEC in general) is the significant cost of O 2 enrichment. The present work reports early results from a study of CH 4 OEC, in which the O 2 enrichment of air is implemented in situ using dense, high-temperature mixed-conducting solid-oxide membranes. We report on the preparation and characterization of these membranes, and on the fundamental combustion studies of the relevant reactive mixtures, including the effect of O 2 lancing on the NO x and CO emissions of fuel-lean and fuel-rich CH 4/air premixed flames.
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