National Repository of Grey Literature 7 records found  Search took 0.00 seconds. 
Vliv přídavku oxidu uhličitého ke zplyňovacímu médiu při atmosférickém zplyňování vodní parou ve fluidním loži křemenného písku a vápence
Jeremiáš, Michal ; Pohořelý, Michael ; Vosecký, Martin ; Skoblia, Sergej ; Kameníková, Petra ; Svoboda, Karel ; Punčochář, Miroslav
The aim of this project was to evaluate the effect of addition of CO2 to the gasification agent during allothermal steam fluidized bed gasification of biomass at constant temperature about 800 °C. Moreover, the effect of different fluidized bed materials such as silica sand and limestone together with the effect of temperature on producer gas composition was also examined. Experiments led to conclusions that CO2 added to the gasification agent was converted to CO to only very limited extent while CO2 dilution effect was relatively strong. The CO2 to CO conversion was exhanced by the use of limestone as the bed material. Limestone showed also strong catalytic activity towards reduction in tar content in the producer gas and higher production of H2, CO2 and CO in comparison with silica sand. Optimal temperature for in the bed-use of limestone in the gasification process was proposed to be around 850 °c under the given experimental conditions.
Allothermal Fluidized Bed Biomass Gasification-
Jeremiáš, Michal ; Pohořelý, Michael ; Vosecký, Martin ; Skoblia, Sergej ; Kameníková, Petra ; Svoboda, Karel ; Punčochář, Miroslav
The influence of reactor temperature and material of the fluidized bed on gas composition and yield was studied.
Biomass Gasification and Producer Gas Utilisation
Čermáková, J. ; Vosecký, Martin ; Skoblia, Sergej ; Pohořelý, Michael ; Hejdová, Petra
This article deals with biomass gasification and producer gas utilisation.
Leaching of Zn, Cd, Pb, a Cu from Penny-Cress (Thlaspi caerulescens) Used for Phytoremediation
Pohořelý, Michael ; Šyc, Michal ; Tlustoš, P. ; Habart, J. ; Punčochář, Miroslav
This work deals with decontamination technology – phytoextraction, which is used for decontamination of soil in-situ. Studied plant was penny-cress (Thlaspi caerulescens) that serves as hyperaccumulator of heavy metals.
Fuel Characteristics of Flax (Linum usitatissimum) Applied for Phytoremediation of Industrially Contaminated Sites
Šyc, Michal ; Pohořelý, Michael ; Toufarová, H. ; Žáčková, P. ; Punčochář, Miroslav
Expansion of energetic crops growing leads to the need of cultivation of soil that was not used so far. Flax as an energetic crop is possible to grow on insdustrially contaminated sites. Furthermore, heavy metals bioaccumulation ability of flax caused remediation of contaminated soils by moving them to phytomass. This phytoremediation method is called phytoextraction and it is one of the phytoremediation technologies. Fuel characteristics and usability of flax for selected heavy metals (Cu, Pb, Zn, Cd, Hg, Cr, Ni, As) phytoextraction are presented in short-paper.
Detailed Composition of the Low-Calorific Producer Gas from the Fluid-Bed Gasification of Biomass.
Pohořelý, Michael ; Vosecký, Martin ; Skoblia, Sergej ; Kameníková, Petra ; Punčochář, Miroslav ; Vošta, J. ; Svoboda, Karel
The gaseous product from gasification (producer gas) can be effectively utilized in a variety of ways including power generation, production of chemicals, fuels for transport and substitution of natural gas for heating. The gasification technology, needed gas composition and cleaning, tolerable contents of impurities, toxic compounds and heating value of the producer gas are determined usually by the end user of the gas.

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