Dual fuel pilot burner for a furnace

Patent · Tue Dec 16 04:00:00 EST 1986

OSTI ID:7136884

Vosper, R R

A dual fuel burner is described for a furnace adapted to use pulverized, solid fuel having a relatively low volatility as the primary fuel, the burner comprising: an elongated, tubular housing having upstream and downstream ends and a generally coaxially disposed ignition chamber terminating in a discharge opening at the downstream end of the housing; pulverized solid fuel carrying conduits surrounding the chamber, extending from the upstream end to the downstream end of the housing and terminating at conduit outlets surrounding the discharge opening. This allows the flowing of the pulverized solid fuel through the conduits and discharges it into the furnace in close proximity to the discharge opening of the chamber; means for directing a relatively high volatility fuel into the chamber; means for igniting the high volatility fuel in the chamber so that a pilot flame issues through the discharge opening into the furnace; first combustion air inlet means in fluid communication with the ignition chamber providing air for sustaining the pilot flame; and second combustion air inlet means communicating with the downstream end of the housing providing at least a portion of the air required for the combustion of the pulverized solid fuel in the furnace.

• Assignee: Coen Co., Inc., Burlingame, CA
• Patent Number(s): US 4628832
• OSTI ID: 7136884
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR FLOW
APERTURES
BURNERS
CHEMICAL REACTIONS
COMBUSTION
DESIGN
FLAME PROPAGATION
FLUID FLOW
FUEL SUBSTITUTION
FUELS
FURNACES
GAS FLOW
IGNITION SYSTEMS
INTAKE STRUCTURES
MECHANICAL STRUCTURES
NOZZLES
OPENINGS
OXIDATION
PULVERIZED FUELS
SOLID FUELS
THERMOCHEMICAL PROCESSES
VOLATILITY