Method and apparatus of gas-coal combustion in steam boilers. [With gas assist]

Patent · Tue Jul 01 04:00:00 EDT 1986

OSTI ID:5514128

Green, A E.S.; Green, B A.S.

A method is described for combustion of coal-fluid mixture with combustible gas-air mixture in a combustion device comprising the sequential steps of: (A) introducing a hollow sheath of coal-fluid mixture into a chamber in a combustion device while simultaneously spirally swirling the sheath in a predetermined direction and maintaining the sheath in an organic relationship; and (B) introducing a spirally swirling and organized combustible gas-air mixture internally within the hollow sheath with the motion of the combustible gas-air mixture being in the same swirling direction as the predetermined direction of the coal-fluid mixture to minimize any general mixing of the combustible gas-air mixture with the coal-fluid mixture and to promote volatilization and enhance the more complete combustion of the coal-fluid mixture by the combustible gas-air mixture to produce a flame by inwardly igniting the gas-air mixture within the hollow sheath of coal-fluid mixture.

• Assignee: Univ. of Florida, Gainesville, FL
• Patent Number(s): US 4597342
• OSTI ID: 5514128
• 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 FLOW
BOILERS
BURNERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION CHAMBERS
DISPERSIONS
ENERGY SOURCES
EVAPORATION
FLAME PROPAGATION
FLUID FLOW
FOSSIL FUELS
FUEL SLURRIES
FUEL-AIR RATIO
FUELS
GAS FLOW
IGNITION
MATERIALS
MIXING
MIXTURES
OPERATION
OXIDATION
PHASE TRANSFORMATIONS
SLURRIES
STEAM GENERATORS
SUSPENSIONS
THERMOCHEMICAL PROCESSES
VAPOR GENERATORS
VORTEX FLOW