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24.1 Introduction
Industrial oxygen has been used to enhance combus-
tion in the glass industry for several decades. Most of
these installations utilized supplemental oxygen/fuel
(oxy/fuel) burners, premixed oxygen enrichment of the
combustion air, or undershot lancing of oxygen to the
port or burner. Supplemental oxy/fuel is the practice
of installing one or more oxy/fuel burners into an air/
fuel furnace. Premixed oxygen enrichment is the prac-
tice of introducing oxygen into the combustion air to a
level of up to 27% total contained oxygen (i.e., 6% oxy-
gen enrichment). The amount of oxygen enrichment is
limited by material compatibility i ...