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Petroleum Coke as a Supplementary Fuel for Cyclone Boilers: Characteristics and Test Results

[+] Author Affiliations
David A. Tillman

Foster Wheeler Power Group, Inc., Clinton, NJ

Paper No. IJPGC2002-26157, pp. 821-832; 12 pages
doi:10.1115/IJPGC2002-26157
From:
  • 2002 International Joint Power Generation Conference
  • 2002 International Joint Power Generation Conference
  • Scottsdale, Arizona, USA, June 24–26, 2002
  • Conference Sponsors: Power Division
  • ISBN: 0-7918-3617-7 | eISBN: 0-7918-3601-0
  • Copyright © 2002 by ASME

abstract

Petroleum coke is periodically tested and used as a supplementary fuel for cyclone boilers. Its high heat content and low cost make it an attractive fuel for power generation. In cyclone boiler firing, it also has environmental advantages. While it is high in sulfur content, it can be used to reduce NOx emissions along with such trace metal emissions as mercury and arsenic. Successful firing of petroleum coke in cyclone boilers, however, requires considerable attention to fuel properties of the coal and the opportunity fuel including fuel structure and reactivity, and ash chemistries. This paper reviews selected properties of petroleum coke including traditional analyses plus structural characterization using 13 Carbon Nuclear Magnetic Resonance (NMR), drop tube reactor (DTR) characterization for kinetics and volatility evaluation, and thermogravimetric analysis (TGA) for char oxidation kinetics. The paper then summarizes results of petroleum coke firing at the Paradise Fossil Plant of TVA, and Bailly Generating Station of Northern Indiana Public Service Company (NIPSCO). Results presented include impacts of cofiring on boiler efficiency, NOx emissions, and the fate of selected trace metals including arsenic, mercury, nickel, and vanadium. It documents the overall benefits and issues associated with cofiring petroleum coke with coal in cyclone boilers as a significant opportunity fuel.

Copyright © 2002 by ASME
Topics: Fuels , Coke , Boilers , Petroleum

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