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The Optimization of a Coal Water Slurry Atomizer FREE

[+] Author Affiliations
T. C. Roesler, C. Wilkes

General Motors Corporation, Indianapolis, IN

Paper No. 89-GT-111, pp. V003T05A002; 7 pages
doi:10.1115/89-GT-111
From:
  • ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications
  • Toronto, Ontario, Canada, June 4–8, 1989
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7915-3
  • Copyright © 1989 by ASME

abstract

A coal water slurry (CWS) air assist atomizer has been optimized for use in a coal fueled gas turbine engine. The nozzle is a refinement of a successful atomizer originally designed to operate at an atomizing air/fuel ratio of 1:1 and a pressure ratio of 2:1. Several configurations of the nozzle have been tested at atmospheric pressure conditions and scaled fuel flow rate using a CWS with 50% solids loading. The configurations studied included changes in air/liquid ratio, airflow split between inner and outer airflow paths, and geometry of the flow path. The data show that the optimized atomizer design can produce Sauter mean diameter (SMD) droplets of less than 50 microns at pressure ratios less than 3:1. The data also show that the lower limit on SMD is approximately 25 microns for the CWS tested.

Copyright © 1989 by ASME
This article is only available in the PDF format.

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