Sintering Tendency of Some Ash in Correlation with Electric Resistivity and Phase Equilibrium Calculations

• Autorzy: Nowak-Woźny D. , Moroń W. , Hrycaj G. , Rybak W.
• Języki publikacji: EN

Abstrakty

EN

In order to prevent operational problems arising from ash deposition, through comprehension of the phenomena taking place within the furnace, appropriate sampling and characterization of the deposits are necessary. One of the most common approaches for the assessment of operational problems related to ash deposition is based on determining the fusion behavior of ash by measurement of its sintering temperature. In this paper are presented the results of mechanical, thermal and electrical measurements of the ash samples prepared from brown and bituminous coal, some sewage sludge and biomass. The sintering tendency of the ashes was based on the chemical analysis, Ash Fusion Test data and Equilibrium Phase Diagrams. The sintering temperature is here determined by the change in the resistivity of ash while heated at a constant rate. On the basis of these experiments results, it was made the correlation between the ashes sintering temperature and electrical resistivity of the samples. It was observed the significant changes of the electrical resistivity during the heating process. To explain the electrical characteristics of the sample, some thermodynamic calculation was made and the equilibrium phase was determined. The characteristic resistivity changes were correlated with the equilibrium phases formed during heating process.

Słowa kluczowe

EN

electrical measurements; electric resistivity

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2010
• Tom: Vol. 30 nr 3
• Strony: 177--191
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Nowak-Woźny D.

autor

Moroń W.

autor

Hrycaj G.

autor

Rybak W.

• Wrocław University of Technology, Institute of Heat Engineering and Fluid Mechanics,

Bibliografia

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