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

Patent · Fri Jan 01 04:00:00 EST 1982

OSTI ID:864278

Loth, John L ^[1]; Smith, William C ^[1]; Friggens, Gary R ^[1]

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1. Morgantown, WV

The present invention is directed to a coal-water slurry atomizer for use 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.

• Research Organization: National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4341530
• OSTI ID: 864278
• Country of Publication: United States
• Language: English

Related Subjects

/48/239/414/
atomizer
coal
coal gas
coal gasifier
coal-feeder
coal-water
coal-water slurry
conduit
constant
deleterious
directed
dispersed
disposed
droplets
dryer
emerging
employed
feed
feed coal
flow
gasifier
heated steam
heating
high-pressure
injected
injection
plurality
ports
pressure
pressurized
prior
provide
provided
pumping
rapidly
shears
slurry
slurry atomizer
steam
steam injection
superheated
superheated steam
tangentially
utilized
vaporized
venturi
vortical
vortical flow
water
water slurry