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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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Biochar Preparation of Various Types of Biomass
Břendová, R. ; Tlustoš, P. ; Száková, J. ; Habart, J. ; Pohořelý, Michael ; Punčochář, Miroslav
Soil contamination by risk elements is a serious problem. There are available remediation methods, using plants to remove these elements from soil. Plants for our experiments were grown on contaminated soil of Příbram area. Biomass of these plants was used to prepare biochar, which could be used then as a soil additive and due to its characteristics, can be able to immobilize risk elements in soil. The experiment was focused on the biochar preparation. There was observed the effect of the type of biomass and the final temperature on specific surface area and yield of biochar: properties limit its application as a soil additive. While the final temperature increased, the specific surface area increased and the yield of biochar decrease. The highest surface area was found at biochar from wood mixture.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22012121014260 - PDF
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Influence of Pyrolysis Temperature and Type of Ligno-Cellulose and Cellulose Biomass on Yield, Specific Surface Area and Mechanical Resistance of Active Coal
Pohořelý, Michael ; Břendová, K. ; Krček, M. ; Šyc, Michal ; Punčochář, Miroslav ; Száková, J. ; Tlustoš, P.
In the Czech Republic, there are many contaminated agricultural soils due to anthropogenic activity and geogenic origin. The contaminated biomass of plants grown on the contaminated soils needs to be appropriately disposed of to prevent the re-releace of heavy metals into the environment. One way of processing contaminated biomass is pyrolysis, where the heavy metals are concentrated in biochar (active coal). This can be applied to soil where it improves the physical properties. The aim of the work was to observe the effect of temperature and the type of biomass grown on contaminated soils from a locality Příbram on the specific surface area, yield and mechanic resistance of active coal.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22012112316131 - PDF
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