Coal burning arrangement. [method for producing hot, desulfurized, fly-ash-free flue gases]

Patent · Tue Oct 04 04:00:00 EDT 1977

OSTI ID:5325817

Wormser, A F

The process involves pyrolyzing pulverized coal to form char and volatiles, separating the char from the volatiles, burning the char in heat-transfer relationship with a stoichiometric excess of air, forming thereby ash and a mixture of gases, the excess of air being chosen to produce in the ash a temperature below the fusion temperature thereof, separating the mixture of gases from the ash, and thereafter burning the volatiles in the mixture of gases. Also, coal burning apparatus is described which comprises, in combination a spouted bed pyrolyzer, a fluidized bed combustor, a first cyclone, a second cyclone, and an afterburner, the pyrolyzer being connected to accept pulverized coal and to discharge char to the combustor and gaseous materials with entrained particulate material to the first cyclone, the first cyclone being connected to deliver gases to the afterburner, the combustor being connected to accept also a combustion supporting gas and to deliver to the second cyclone gaseous materials with entrained particulate material, and the second cyclone being connected to deliver gaseous material to the afterburner.

• Assignee: Wormser Engineering, Inc.
• Patent Number(s): US 4051791
• OSTI ID: 5325817
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
AGGLOMERATION
AIR POLLUTION ABATEMENT
AIR POLLUTION CONTROL
ASHES
BURNERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTORS
CONCENTRATORS
CYCLONE SEPARATORS
DECOMPOSITION
DESIGN
DESULFURIZATION
EFFICIENCY
ENERGY SOURCES
FLUE GAS
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
GASEOUS WASTES
INERTIAL SEPARATORS
OXIDATION
POLLUTION ABATEMENT
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
PYROLYSIS
RESIDUES
WASTES