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1
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NOx and SO2 Emission During OXY-Coal Combustion

100%
Moroń W., Czajka K., Ferens W., Babul K., Szydełko A., Rybak W.
Chemical and Process Engineering
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2013
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issue 3
2
Content available remote

Surface characterization of different particles arising as a result of coal combustion process in selected power plants from Central Poland using ToF-SIMS

100%
Grams J., Bawolak K.
Polish Journal of Chemical Technology
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2007
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vol. 9
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issue 4
77-80
EN
The aim of this work was the ToF-SIMS investigations of different particles arising as a result of a coal combustion process in selected power plants from Central Poland. The chemical composition and distribution of particular compounds on the studied surfaces were determined. Moreover, the ratio of the quantity of aromatic and aliphatic hydrocarbons adsorbed on the surface of the particles was estimated. A qualitative analysis of the studied samples demonstrated the presence of a big number of various compounds, including heavy metals such as Pb, Cd and As on the investigated surfaces. In the prevailing number sample components were distributed non-homogenously on the surface and the larger areas richer in a certain type of ions were observed.
3
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Iron-containing phases in fly ashes from different combustion systems

100%
Szumiata T., Gzik-Szumiata M., Brzózka K., Górka B., Gawroński M., Świetlik R., Trojanowska M.
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issue 1
151-154
EN
The investigations of iron-containing phases existing in fly ashes were performed using transmission Mössbauer spectrometry. The examined samples of fly ashes were collected from different coal combustion systems, that is, stoker-fired boiler in municipal heating plant and pulverized coal boiler in power plant. Several phases are identified in the samples: iron oxides, paramagnetic aluminosilicate glass with Fe3+ ions and Al2O4-type spinel with Fe2+ ions. It was pointed out that proportions of contents of phases strongly depend not only on the combustion temperature but also on the way of ash collection.
4
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Unburned carbon in the circulating fluidised bed boiler fly ash

100%
Kobyłecki R.
Chemical and Process Engineering
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2011
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vol. 32
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issue 4
255-266
EN
The paper describes the results of various actions and industrial tests conducted in order to decrease the content of unburned carbon in the fly ash of a circulating fluidised bed combustor (CFBC). Several attempts to improve the situation were made and the effects of several parameters on the unburned carbon content in the fly ash were investigated (e.g. bed temperature, cyclone separation efficiency, fuel particle size distribution, boiler hydrodynamics, grid design, and fuel data). Unfortunately, no satisfactory solution to these problems was found. Probably, apart from attrition and char fragmentation, additional factors also contributed to the formation of unburned carbon in the CFBC fly ash.
5
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Mineral Matter Transformation in OXY-Fuel Coal Combustion

100%
Nowak-Woźny D., Moroń W., Urbanek B., Rybak W.
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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.
6
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NOxand SO2Emission During OXY-Coal Combustion

100%
Moroń W., Czajka K., Ferens W., Babul K., Szydełko A., Rybak W.
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vol. 34
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issue 3
337-346
EN
The paper presents results of coal behaviour during combustion in oxy-fuel atmosphere. The experiment was performed using 3 meter long Entrained Flow Reactor and 1 meter long Drop Tube Reactor. Three hard coals and two lignites were analysed in order to investigate NOx, SO2 emission and fly ash burnout. The measurements were performed along and at the outlet of a combustion chamber for one- and two - stage combustion. In the second stage of the experiment, kinetic parameters for nitrogen evolution during combustion in oxy - fuel and air were calculated and the division of nitrogen into the volatile matter and the char was measured. The conducted experiment showed that emissions in oxy - fuel are lower than those in air.
7
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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
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2013
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issue 3
8
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Unburned carbon in the circulating fluidised bed boiler fly ash

88%
Kobyłecki R.
Chemical and Process Engineering
|
2011
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issue 4
9
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Numerical research of combustion with a minimum boiler load

88%
Hernik B., Zabłocki W., Hernik B., Zabłocki W.
Archives of Thermodynamics
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2020
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vol. 41
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issue 4
10
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Online Monitoring System of Air Distribution in Pulverized Coal-Fired Boiler Based on Numerical Modeling

75%
Madejski P., Żymełka P., Nabagło D., Janda T.
Archives of Thermodynamics
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2017
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issue 4
11
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Comparison of anthropogenic metal deposition rates with excess soil loading from coal, oil and gas industries in the Usa River Basin, NW Russia

75%
Walker T. R., Walker T. R.
Polish Polar Research
|
2005
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vol. 26
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issue 4
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