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

Patent · Fri Jan 01 00:00:00 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 (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• 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

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