A5035528714- Combustion and Detonation Processes
- Risk and Safety Analysis
- Thermochemical Biomass Conversion Processes
- Spectroscopy and Laser Applications
- Energetic Materials and Combustion
- Fire dynamics and safety research
- Catalysts for Methane Reforming
- Advanced Combustion Engine Technologies
- Thermal and Kinetic Analysis
- Chemical Thermodynamics and Molecular Structure
- Atmospheric Ozone and Climate
- Environmental and Industrial Safety
- Thermodynamic properties of mixtures
- Iron and Steelmaking Processes
- Graphite, nuclear technology, radiation studies
- Cyclone Separators and Fluid Dynamics
- Combustion and flame dynamics
- Heat transfer and supercritical fluids
- Laser Design and Applications
- Atmospheric chemistry and aerosols
- Engineering and Material Science Research
- Atmospheric and Environmental Gas Dynamics
- Process Optimization and Integration
- Subcritical and Supercritical Water Processes
- Water Quality Monitoring and Analysis
VSB - Technical University of Ostrava
2015-2024
Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry
2009-2013
Université de Lille
2009
Centre National de la Recherche Scientifique
2009
The process of gasification is well-known; however, to this day, the applications such facilities, especially off-grid small-scale units for direct electricity and char production, are scarce. In study, an fixed bed downdraft unit studied from gaseous/solid product character perspective. This represents a possible solution emerging call sustainable decentralised energy sources. Softwood chips were utilised in their conversion into synthetic gas (direct supply) solid biochar was observed...
This study examines a solid recovered fuel gasification process in the context of regional, clean energy supply from an affordable source. The examination this approach was performed under various equivalence ratios and load regimes. A unique cross/updraft reactor with fixed (sliding) bed over circular grate tangential media intake utilised. technology is perspective waste-to-energy waste-to-materials production. investigated parameters included producer gas quality purity, overall...
Article Safety Evaluation of Catalytic Synthesis Off-Gases through Explosion Pressure Determination Jakub Čespiva 1,*, Jan Skřínský 1, Thangavel Sangeetha 2,3, and David Kupka 1 Energy Research Centre, Centre for Environmental Technologies, VSB—Technical University Ostrava, 17. listopadu 2172/15, 708 00 Czech Republic 2 Department Refrigerating, Air-Conditioning Engineering, National Taipei Technology, 10608, Taiwan 3 Center Conservation New Generation Residential, Commercial, Industrial...
Biomass is a renewable energy source with great potential worldwide and in the European Union. However, valorization necessary to turn many types of waste biomass into tradable commodity that has replace coal power plants without significant modifications firing systems. Mild pyrolysis, also known as torrefaction, thermal process low-quality could be suitable for such purpose. In this work, typical Spruce-Pine-Fir residues from sawmill were tested terms explosion flame propagation...
In order to utilise energy-rich solid waste, its liquid conversion into valuable hydrocarbon (HC) chains is one of the ways followed worldwide decrease oil processing and waste landfilling at same time.The unique fixed bed updraft gasification reactor with an oscillating circular grate, situated in VŠB -Technical University Ostrava, Czech Republic, can generate up 90 m 3 •h-1 CO H 2 -rich synthetic gas.Such mixture suitable for gas Fischer-Tropsch Micro Catalyst Bed (F-T MCB) unit, where...
Brewers’ Spent Grain is a by-product of the brewing process, with potential applications for energy purposes. This paper presents results an investigation aiming at valorization this residue by torrefaction, making product two purposes: solid fuel that could be used generation heat brewery and colouring agent replace malt production dark beers. Decreased consumption such purposes would have positive influence on sustainability brewing. Torrefaction was performed temperatures ranging between...
Explosions of hybrid mixtures are an interesting theoretical and experimental problem in explosion sciences, because they combine the physicochemical properties flammable gases dusts. A mixture is composed at least two substances or more states. The influence common presence gas on explosiveness parameters combustible dust itself proven. In this study, we present effect higher initiation temperatures, different initial sources with energies, volume chambers explosions arising from use...
Fourier-transform microwave and millimeter-wave spectra of the iodomethyl radical, CH(2)I, have been observed in ground vibronic state frequency ranges 17-38 GHz 200-610 GHz, respectively. The pi-electron radical was produced either by iodine abstraction from diiodomethane (CH(2)I(2)) or hydrogen iodomethane (CH(3)I). Seventy-three hyperfine resolved lines owing to two nuclei detected region, including K(a) = 0 (ortho species) 1 (para species). No splitting due could be for para species,...
This paper describes a series of experiments performed to study the explosion characteristics propanol isomer (1-propanol and 2-propanol)–air binary mixtures. The were conducted in two different experimental arrangements—a 0.02 m3 oil-heated spherical vessel 1.00 electro-heated vessel—for equivalence ratios between 0.3 1.7, initial temperatures 50, 100, 150 °C. More than pressure–time curves recorded. effects temperature test volume on various characteristics, such as maximum pressure, rate...
Abstract Aqueous solutions of alcohols are considerable interest for a wide range scientists and technologists. Simple dimensionless experimental formulae based on rational reciprocal polynomial functions proposed correlation the flashpoint data binary mixtures two components. The obtained from experiments predictions. main results derived approximated values model verification by comparing predicted with studied mixtures. Potential application concerns assessment fire explosion hazards,...
The distribution of pollutants in two urban scale models (point emission source and street canyon with extensive transport) was investigated by means CO 2 laser photoacoustic spectroscopy the region atmospheric window (9–10 μm). experimental results physical modeling are a good agreement numerical calculations performed frame computational fluid dynamic (CFD) modeling. Methanol, ethanol, ozone (examples light pollutants), as well sulfur hexafluoride 1,2 dichlorethane heavy were selected on...
Corrosion is typical of the damage that occurs in ageing pressure vessels and pipelines used industrial processes as a result reactive products inside or harsh environmental conditions on outside. Motivation for this article to summarize cases, causes, consequences, prevention terms models prediction explosion from BLEVEs. The contribution deals with real scenarios accidents associated transport storage pressurized facilities corrosive flammable chemicals. While LPG, propane, butane BLEVEs...
Coke oven gas is highly rated as a valuable by-product of coal carbonization to produce coke in the steel industry. For assessment process hazards and safe design equipment handling gas, knowledge safety parameters, such maximum pressure, rate pressure riseand burning velocity, required. In this work, explosion behavior gas/air mixtures studied. Experimental tests are carried out 1 m3 closed chamber adopted for tests.
Carbon resource utilisation is one of the many options to reduce carbon emissions and create additional value from ecological economic points view. The e.g. process or residue gases carried out through different technological steps, including various technologies convert carbon-rich high value-added products in form hydrocarbon (HC) compounds. Several types gas iron, steel coke industries containing elements such as H2, CH4 CO are valuable feedstock for systems. In this study, possibility...
A small amount of flammable gas mixed with dust can cause a large explosion serious consequences. In this study, tests hybrid mixtures were performed in an chamber volume 0.02 m3. Spitzer et al. (2023) presented the first ever test methane as component and specific cornstarch sample, investigating practicality whole procedure, dispersion results variation between apparatuses. The research mentioned above, was focused on ignition source, accuracy pressures, mixing procedure. All tested...
Gas/vapor cloud explosions and fires are responsible for most of the largest property loss events worldwide in hydrocarbon industry. Motivation this article is to summarize explosion pressure caused by corrosive gases/vapors terms mathematical modeling. Presented based on real scenarios accidents associated with transport storage facilities flammable chemicals. While pure chemicals well described literature, information about toxic substances rather scarce. This work aims at studying...