Furnace structure

Patent · Tue Feb 10 04:00:00 EST 1981

OSTI ID:6126542

Vatsky, J

A furnace structure has a particle separator for separating a mixture of a transport fluid and pulverized coal into a coarse coal fraction and a fine coal fraction, a furnace, a burner assembly for burning the pulverized coal, and a windbox for providing combustion supporting gas to the burner assembly. The burner assembly has separate, concentrically disposed elements to burn coarse and fine coal particles under different combustion conditions to reduce the production of nitrogen oxides from the combustion of coal as a fuel. The burner assembly further includes a control nozzle for maintaining a swirling motion in the combustion flame and a separate, axially-movable adjustable sleeve for regulating the quantity flow of turbulence-free combustion-supporting air.

• Assignee: Foster Wheeler Energy Corp
• Patent Number(s): US 4249470
• OSTI ID: 6126542
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR POLLUTION ABATEMENT
BURNERS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL FINES
COMBUSTION
DESIGN
FLUE GAS
FLUID FLOW
FURNACES
GASEOUS WASTES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
POLLUTION ABATEMENT
SIZE
SWIRL FLOW
THERMOCHEMICAL PROCESSES
WASTES