Use of a Predictive Model for the Impact of Cofiring Coal/Biomass Blends on Slagging and Fouling Propensity
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作者:
Plaza, Piotr
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Cardiff Univ, Sch Engn, Ctr Res Energy Waste & Environm, Cardiff CF24 3AA, S Glam, WalesCardiff Univ, Sch Engn, Ctr Res Energy Waste & Environm, Cardiff CF24 3AA, S Glam, Wales
Plaza, Piotr
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Griffiths, Anthony J.
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Cardiff Univ, Sch Engn, Ctr Res Energy Waste & Environm, Cardiff CF24 3AA, S Glam, WalesCardiff Univ, Sch Engn, Ctr Res Energy Waste & Environm, Cardiff CF24 3AA, S Glam, Wales
Griffiths, Anthony J.
[1
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Syred, Nick
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Cardiff Univ, Sch Engn, Ctr Res Energy Waste & Environm, Cardiff CF24 3AA, S Glam, WalesCardiff Univ, Sch Engn, Ctr Res Energy Waste & Environm, Cardiff CF24 3AA, S Glam, Wales
Syred, Nick
[1
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Rees-Gralton, Thomas
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Cardiff Univ, Sch Engn, Ctr Res Energy Waste & Environm, Cardiff CF24 3AA, S Glam, WalesCardiff Univ, Sch Engn, Ctr Res Energy Waste & Environm, Cardiff CF24 3AA, S Glam, Wales
Rees-Gralton, Thomas
[1
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[1] Cardiff Univ, Sch Engn, Ctr Res Energy Waste & Environm, Cardiff CF24 3AA, S Glam, Wales
The paper describes an investigation of slagging and Fouling effects when cofiring coal/biomass blends by using a Predictive model for large utility boilers. This model is based on the use a zone computational method to determine the midsection temperature profile throughout a boiler. coupled with a thermo-chemical model, to define and assess the risk of elevated slagging and fouling levels during cofiring of solid fuels. The application of this prediction tool was made for a 618 MW thermal wall-fired pulverized coal boiler, cofired with a typical medium volatile bituminous coal and two substitute fuels, sewage sludge and sawdust. Associated changes in boiler efficiency as well as various heat transfer and thermodynamic parameters of the system were analyzed with slagging and fouling effects for different cofiring ratios. The results of the modeling revealed that, for increased cofiring of sewage sludge, an elevated risk of slagging and high-temperature fouling occurred, in complete contrast to the effects occurring with the utilization of sawdust as a Substitute fuel.
机构:
Boston Univ, Dept Mech Engn, Boston, MA 02215 USA
Boston Univ, Div Mat Sci & Engn, Boston, MA 02215 USABoston Univ, Dept Mech Engn, Boston, MA 02215 USA
Goldfarb, Jillian L.
Ceylan, Selim
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Ondokuz Mayis Univ, Fac Engn, Dept Chem Engn, TR-55139 Kurupelit, Samsun, TurkeyBoston Univ, Dept Mech Engn, Boston, MA 02215 USA
机构:
Univ New South Wales, Sch Econ, Sydney, NSW, Australia
Northwestern Univ, Dept Econ, Evanston, IL USAUniv New South Wales, Sch Econ, Sydney, NSW, Australia
Eftimoski, Martin
Ross, Shawn A.
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Macquarie Univ, Big Hist Inst, Dept Modern Hist Polit & Int Relat, Sydney, NSW 2109, Australia
Macquarie Univ, Dept Ancient Hist, W6A 510, Sydney, NSW 2109, AustraliaUniv New South Wales, Sch Econ, Sydney, NSW, Australia
Ross, Shawn A.
Sobotkova, Adela
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Macquarie Univ, Dept Ancient Hist, W6A 510, Sydney, NSW 2109, AustraliaUniv New South Wales, Sch Econ, Sydney, NSW, Australia