Slurry atomizer for a coal-feeder and dryer used to provide coal at gasifier pressure. [Patent application]

Patent · Wed Dec 05 04:00:00 EST 1979

OSTI ID:6997032

Loth, J L; Smith, W C; Friggens, G R

The present invention is directed to a coal-water slurry atomizer for use in a high-pressure dryer employed in a pumping system utilized to feed coal into a pressurized coal gasifier. The slurry atomizer is provided with a venturi, constant area slurry injection conduit, and a plurality of tangentially disposed steam injection ports. Superheated steam is injected into the atomizer through these ports to provide a vortical flow of the steam, which, in turn, shears slurry emerging from the slurry injection conduit. The droplets of slurry are rapidly dispersed in the dryer through the venturi where the water is vaporized from the slurry by the steam prior to deleterious heating of the coal.

• Assignee: Dept. of Energy
• Patent Number(s): None
• OSTI ID: 6997032
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ATOMIZATION
CARBONACEOUS MATERIALS
COAL
COAL GASIFICATION
DESIGN
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUEL FEEDING SYSTEMS
FUEL SLURRIES
FUEL SYSTEMS
FUELS
GASIFICATION
HYDROGEN COMPOUNDS
MATERIALS
MIXTURES
OXYGEN COMPOUNDS
SLURRIES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
WATER