Coal-fired asphalt plant

Patent · Tue Jan 27 04:00:00 EST 1987

OSTI ID:6760567

Brok, J D; May, J G

A coal-fired burner system is described for use with an asphalt plant having a rotary drum, the burner system comprising: means for pulverizing coal to particles of a predetermined size; exhaust means for creating an exhaust airflow through and out of the pulverizing means so that the particles of pulverized coal are entrained in the exhaust airflow and carried out of the pulverizing means; means for recovering pulverized coal particles from the exhaust airflow; means in communication with the coal recovery means for storing the pulverized coal particles recovered from the exhaust airflow; a burner having swirl vanes to provide a cyclonic flame pattern, mounted in one end of the rotary drum; means for providing a primary flow of air to enter the burner substantially tangentially; and means for introducing the pulverized coal particles from the coal particle storage mens into the primary airflow, whereby a mixture of air and coal is delivered into the burner.

• Assignee: Astec Inc., Chattanooga, TN
• Patent Number(s): US 4638747
• OSTI ID: 6760567
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300 -- Coal
Lignite
& Peat-- Preparation-- (1987-)
014000* -- Coal
Lignite
& Peat-- Combustion
AIR FLOW
ASPHALTS
BITUMENS
BURNERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL PREPARATION
COMBUSTION
COMMINUTION
ENERGY SOURCES
EXHAUST SYSTEMS
FLAME PROPAGATION
FLOW RATE
FLUID FLOW
FOSSIL FUELS
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
FUELS
GAS FLOW
IGNITION SYSTEMS
INDUSTRIAL PLANTS
MATERIALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
PARTICLE SIZE
PULVERIZED FUELS
PULVERIZERS
SIZE
TAR
THERMOCHEMICAL PROCESSES