Slurry atomizer for a coal-feeder and dryer used to provide coal at gasifier pressure

Patent · Tue Jul 27 04:00:00 EDT 1982

OSTI ID:6681825

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

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: Department Of Energy
• Patent Number(s): US 4341530
• OSTI ID: 6681825
• 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 PLANTS
DISPERSIONS
DRYERS
ENERGY SOURCES
ENHANCED RECOVERY
EVAPORATION
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FUEL FEEDING SYSTEMS
FUEL SLURRIES
FUEL SYSTEMS
FUELS
HEATING
HIGH PRESSURE
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
INJECTION
INTAKE
MATERIALS
MIXTURES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
RECOVERY
SHEAR
SLURRIES
STEAM INJECTION
SUPERHEATING
SUSPENSIONS
THERMAL RECOVERY
VENTURI TUBES
VORTEX FLOW
WATER