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Mineral Matter Transformation in OXY-Fuel Coal Combustion

100%
Nowak-Woźny D., Moroń W., Urbanek B., Rybak W.
Chemical and Process Engineering
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2013
|
vol. 34
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issue 3
393-401
EN
The paper presents the results of the mechanical, electrical, CCSEM and XRD measurements of hard coal, conducted in simulated conditions of sintering in atmospheres of O2/CO2,. The changes of the coal ash resistivity are correlated with the content of the oxides and with the sintering temperature determined by the mechanical test and Leitz method. The SEM-EDS analysis was conducted for deposits on the probe. The changes of the measured ash samples, observed during sintering process in O2/CO2 atmosphere, were discussed in the ash microstructure point of view.
2
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Mineral Matter Transformation in OXY-Fuel Coal Combustion

88%
Nowak-Woźny D., Moroń W., Urbanek B., Rybak W.
Chemical and Process Engineering
|
2013
|
issue 3
3
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Lab-Scale Investigations During Combustion of Agricultural Residues and Selected Polish Coals

75%
Kordylewski W. K., Mościcki K. J., Witkowski K. J.
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|
issue 2
4
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Lab-Scale Investigations During Combustion of Agricultural Residues and Selected Polish Coals

75%
Kordylewski W. K., Mościcki K. J., Witkowski K. J.
Chemical and Process Engineering
|
2014
|
vol. 35
|
issue 2
249-262
EN
Preliminary lab-scale investigations were conducted on slagging abatement in biomass-firing by fuel mixing. Three agriculture biomass fuels and olive cake were used in the experiments. Polish lignites and bituminous coals were examined as anti-sintering additives. The effects of chlorine release, potassium retention and ash sintering were examined by heating samples of biomass fuels and additives in the muffle oven and, next, firing them in the laboratory down-fired furnace at the temperature in the range of 800-1150ºC. The obtained slag samples were analysed on: chlorine and potassium content, sintering tendency and crystalline components. Among the examined coals lignite from Turów mine and bituminous coal from Bolesław Śmiały mine appeared to be the most effective in potassium retention in aluminosilicate and chlorine release from slag. Possibly the major factor of these coals which reduced ash sintering was relatively high content of kaolinite
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