Melting glass with port and melter burners for NO/sub x/ control

Patent · Tue Jul 08 04:00:00 EDT 1986

OSTI ID:5454560

Demarest, Jr, H M

A method is described for reducing NO/sub x/ emissions from a glassmaking furnace in which fuel is mixed with an amount of oxygen in excess of the stoichiometric amount required to effect complete combustion of the fuel to issue on O/sub 2/ rich primary flame into the melting chamber of the furnace to melt a glass charge held in the melting chamber and further, to provide a protective O/sub 2/ rich region above the molten glass charge, comprising the step of injecting additional fuel into the melting chamber at a location above the primary flame in such a manner as to provide a fuel rich region above the O/sub 2/ rich region and low overall excess oxygen in the melting chamber. The additional fuel is injected at a flow rate and in a volume sufficient to consume at least a portion of the excess oxygen and reduce the amount of NO/sub x/ present in the melting chamber, to thereby reduce NO/sub x/ emissions.

• Assignee: PPG Industries, Inc., Pittsburgh, PA
• Patent Number(s): US 4599100
• OSTI ID: 5454560
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
BURNERS
CHALCOGENIDES
COMBUSTION CHAMBERS
COMBUSTION CONTROL
CONTROL
ELEMENTS
FLAME PROPAGATION
FLOW RATE
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
FURNACES
GLASS
GLASS INDUSTRY
INDUSTRY
MELTING
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
POLLUTION ABATEMENT
QUANTITY RATIO