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Influence of Oxygen Partial Pressure in the Combustion Atmosphere on the Efficiency, Emissions, and Distribution of Heavy Metals in the Fluidized Bed Incineration of Corn Straw
Durda, Tomáš ; Pohořelý, Michael ; Šyc, Michal ; Svoboda, Karel ; Kameníková, Petra ; Jeremiáš, Michal ; Punčochář, Miroslav
This experimental study is focused on the corn straw incineration in a bubbling fluidized-bed reactor. The aim of this study is to compare the influence of oxygen partial pressure in the combustion atmosphere (air, oxygen-enriched air, pure oxygen ‒ oxy-fuel process) on the efficiency of the combustion process, the emissions of undesirable pollutants (CO, NOx, SO2, N2O, and dust) and distribution of heavy metals between individual output streams (bed ash, cyclone ash, and fly ash). The efficiency of the combustion process is compared on the basis of chemical unburned carbon (concentration of CO in the exhaust gas) and mechanical unburned particles (content of carbon in the solid form).
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22014091514571 - PDF
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Combined Production of Electric Power and Heat via High Temperature Fuel Cells with Solid Electrolyte, Combined Production of Electric Power and Heat via High Temperature Fuel Cells with Solid Electrolyte
Pohořelý, Michael ; Svoboda, Karel ; Skoblia, S. ; Jeremiáš, Michal ; Šyc, Michal ; Kameníková, Petra ; Parschová, H. ; Cabáková, G. ; Šustr, V. ; Durda, Tomáš ; Beňo, Z. ; Punčochář, Miroslav
The aim of this paper is to introduce readers (listeners) to the basics of gasification process, high temperature fuel cells with solid electrolyte and particularly with the problems of high-temperature gas cleaning system of the producer gas from gasification of woody and agricultural biomass and/or alternative fuels (e.g. refuse derived fuel) to the level needed for its use in combined production of heat and electric power in high-temperature fuel cells with solid electrolyte (SOFC).
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22014033115070 - PDF
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Gasification of Ligno-Cellulosic Biomass in a Fluidized Bed of Sand and a Mixture of Sand with Dolomitic Limestone
Pohořelý, Michael ; Jeremiáš, Michal ; Beňo, Z. ; Skoblia, S. ; Kameníková, Petra ; Cabáková, G. ; Barger, A. ; Durda, Tomáš ; Šyc, Michal ; Punčochář, Miroslav ; Svoboda, Karel
The paper focuses on the assessment of using ligno-cellulosic biomass in a fluidized bed gasifier, available within a distance of 50 km, in units with capacity approximately 3 MWe. The main objective of the experiments was to evaluate the effect of partial replacement of inert bed material (sand) with a material catalytically active (dolomitic limestone) on the composition and purity of produced gas and the input fuel energy conversion into the energy chemically bound in the producer gas.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22013041513460 - PDF
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Fluidized-bed Incineration of Contaminated Biomass II
Pohořelý, Michael ; Šyc, Michal ; Krček, Martin ; Tošnarová, Markéta ; Durda, Tomáš ; Bludská, J. ; Svoboda, Karel ; Hartman, Miloslav ; Punčochář, Miroslav
In the report, it has been shown how to effectively burn pretreated cornstalks in the fluidized-bed reactor with a stationary bubbling bed in the presence of a significant proportion of potassium.
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Properties of Coal on Process Gasification in the Fluidized Bed Reactor
Durda, Tomáš ; Pohořelý, Michael ; Jeremiáš, Michal ; Skoblia, S. ; Beňo, Z. ; Janda, V. ; Šyc, Michal ; Punčochář, Miroslav ; Svoboda, Karel
Fuel is gasified by thermochemical conversion into producer gas using an appropriate medium at high temperature in a gasification generator. The aim of this study was to compare the suitability (reactivity) of selected types of coal in several fluid generators under the well defined conditions. Producer gas obtained by coal gasification was compared, especially, in terms of calorific value and yield of gas, cold gas efficiency, the yield of major and minor components of gas, tar yield and conversion fixed carbon into the generator gas.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22012112316120 - PDF
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