Burner with suppressed NOx generation

Patent · Tue Sep 28 04:00:00 EDT 1982

OSTI ID:6728290

Nagai, K

A swirl burner of the two-stage combustion type with suppressed NOx generation which is so arranged that combustion air supplied into the burner is divided into primary and secondary combustion air, and the primary combustion air subjected to a powerful swirling motion by a primary combustion air nozzle having a frustum-conical shape and swirling vanes is supplied into a primary combustion chamber for drawing only primary combustion gas thereinto, while the secondary air is directed, in the form of a rectilinear flow, into a furnace through secondary combustion air nozzles provided around the primary combustion chamber, with oil and gas for fuel being supplied into the primary combustion chamber through a fuel injector nozzle. Part of the fuel is burned in the primary combustion chamber, while the remainder of the fuel is sequentially mixed with the secondary combustion air for combustion in the furnace.

• Assignee: Chugairo Kogyo Kaisha LtD. (Japan)
• Patent Number(s): US 4351632
• OSTI ID: 6728290
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR
BURNERS
CHALCOGENIDES
COMBUSTION CHAMBERS
DESIGN
FLUID FLOW
FLUIDS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GASES
INHIBITION
NITROGEN COMPOUNDS
NITROGEN OXIDES
NOZZLES
OXIDES
OXYGEN COMPOUNDS
VANES
VORTEX FLOW