Differences in reactivity and burnout of coal and lignite in oxy-fuel atmosphere

• Autorzy: Czajka K. , Moroń W. , Ferens W. , Razum K. , Rybak W.
• Języki publikacji: EN

Abstrakty

EN

The thermal reactivity of bituminous coal and lignite were measured under oxy-fuel and air environments using a thermogravimetric analyser (TGA) coupled with a differential scanning calorimeter (DSC), and a 1,5 meter long Drop Tube Furnace (DTF). The TGA/DSC analysis was carried out for heating rates lower than 1 deg/s, under non-isothermal conditions, at temperatures up to 900 °C. Heating rates higher than 104 deg/s were studied using a DTF maintained at 750 °C, 850 °C and 950 °C. The oxygen concentration, covering a wide and practical range, was varied in mixtures of O2/CO2 and O2/N2 in the range of 0 to 30 vol.% and 0 to 21 vol.%, respectively. Devolatilization experiments in the TGA revealed additional mass loss in a CO2 atmosphere, not observed in a N2 atmosphere, at temperatures higher than 720 °C for bituminous coal and 650 °C for lignite. Thermogravimetric results were not confirmed during test in the DTF. TGA experiments showed that the mass loss during oxidation was higher in air than in O2/CO2. Combustion tests performed using DTF indicated that replacing the nitrogen gas with carbon dioxide do not affect the burnout level.

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2013
• Tom: Vol. 33 nr 1
• Strony: 57--65
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Czajka K.

• Wroclaw University of Technology, Faculty of Mechanical and Power Engineering Energy Engineering and Technology Division Wybrzeze Wyspianskiego 27, 50 – 370 Wroclaw

autor

Moroń W.

• Wroclaw University of Technology, Faculty of Mechanical and Power Engineering Energy Engineering and Technology Division Wybrzeze Wyspianskiego 27, 50 – 370 Wroclaw

autor

Ferens W.

• Wroclaw University of Technology, Faculty of Mechanical and Power Engineering Energy Engineering and Technology Division Wybrzeze Wyspianskiego 27, 50 – 370 Wroclaw

autor

Razum K.

• Wroclaw University of Technology, Faculty of Mechanical and Power Engineering Energy Engineering and Technology Division Wybrzeze Wyspianskiego 27, 50 – 370 Wroclaw

autor

Rybak W.

• Wroclaw University of Technology, Faculty of Mechanical and Power Engineering Energy Engineering and Technology Division Wybrzeze Wyspianskiego 27, 50 – 370 Wroclaw

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