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

Abstract

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.

Inventors:
 [1];  [1];  [1]
  1. (Morgantown, WV)
Issue Date:
Research Org.:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
OSTI Identifier:
864278
Patent Number(s):
4341530
Assignee:
United States of America as represented by Department of Energy (Washington, DC) NETL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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/

Citation Formats

Loth, John L., Smith, William C., and Friggens, Gary R. Slurry atomizer for a coal-feeder and dryer used to provide coal at gasifier pressure. United States: N. p., 1982. Web.
Loth, John L., Smith, William C., & Friggens, Gary R. Slurry atomizer for a coal-feeder and dryer used to provide coal at gasifier pressure. United States.
Loth, John L., Smith, William C., and Friggens, Gary R. Fri . "Slurry atomizer for a coal-feeder and dryer used to provide coal at gasifier pressure". United States. https://www.osti.gov/servlets/purl/864278.
@article{osti_864278,
title = {Slurry atomizer for a coal-feeder and dryer used to provide coal at gasifier pressure},
author = {Loth, John L. and Smith, William C. and Friggens, Gary R.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

Patent:

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