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Full-Text Articles in Chemical Engineering
Treatment Of Voc Emissions In A Gas-Solid Fluidized Bioreactor, Kyla Clarke, Gordon A. Hill, Todd S. Pugsley
Treatment Of Voc Emissions In A Gas-Solid Fluidized Bioreactor, Kyla Clarke, Gordon A. Hill, Todd S. Pugsley
The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
A fluidized bioreactor, with a bed of moist sawdust and glass spheres, successfully treated ethanol-contaminated air. The maximum elimination capacity was 75 g m-3sawdust h-1 for the fluidized bed compared to 225 g m-3sawdust h-1 for a packed bed (essentially a biofilter).
Modeling Mercury Capture By Powdered Activated Carbon In A Fluidized Bed Reactor, Fabrizio Scala, Riccardo Chirone, Amedeo Lancia
Modeling Mercury Capture By Powdered Activated Carbon In A Fluidized Bed Reactor, Fabrizio Scala, Riccardo Chirone, Amedeo Lancia
The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
A steady state model of mercury capture on activated carbon in a bubbling fluidized bed of inert material is presented. The model takes into account the fluidized bed fluid-dynamics, the presence of both free and adhered carbon in the reactor as well as mass transfer limitations and mercury adsorption equilibrium. The activated carbon adsorption parameters and the relative amount of free versus adhered carbon in the reactor have been estimated with purposely designed experiments. Model results are compared with results from mercury capture experiments conducted with commercial powdered activated carbon at 100°C in a lab-scale pyrex fluidized bed of inert …
Study Of Methanol To Formaldehyde Reaction In Fluidized Bed Reactor, Jamshid Khorshidi, Mansour Kalbasi
Study Of Methanol To Formaldehyde Reaction In Fluidized Bed Reactor, Jamshid Khorshidi, Mansour Kalbasi
The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
Formaldehyde, as a valuable compound, has been widely used in chemical processes and is usually produced through the catalytic oxidization of methanol in a fixed bed reactor. In the present work, this reaction has been studied in a fluidized bed reactor. For this purpose, a stainless steel fluidized bed reactor , which has the capability of controlling the temperature and flow rate of the streams, has been employed. The effects of different operating variables on the performance of the above-mentioned reactor are studied. The results are compared with the two and three phase models.
2-D Simulation Of The Catalytic Dechlorination Of P-Chlorophenol In A Magnetically Stabilized Fluidized Bed, Joaquín Pinto-Espinoza, Damian Reyes-Jaquez, Adriana Martínez-Prado, Carlos F. Cruz-Fierro
2-D Simulation Of The Catalytic Dechlorination Of P-Chlorophenol In A Magnetically Stabilized Fluidized Bed, Joaquín Pinto-Espinoza, Damian Reyes-Jaquez, Adriana Martínez-Prado, Carlos F. Cruz-Fierro
The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
This study adopted the fundamentals of the catalytic dechlorination of p-chlorophenol in a MSFB column, technology developed by Graham (1). A CFD-DPM approach is used to simulate the catalytic process. The code is validated by comparison with the experimental results, considering the p-chlorophenol removal and the particle catalyst deactivation.
Photocatalytic Degradation Of Toluene By Nano-Tio2 In A Fluidized Bed, Xiaoping Zhang, Cong Liao
Photocatalytic Degradation Of Toluene By Nano-Tio2 In A Fluidized Bed, Xiaoping Zhang, Cong Liao
The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
The mixed gas of toluene and air was used as treated gas, self-made fluidized bed and ultraviolet lamp and TiO2/silica gel prepared in laboratory used as photo reactor and light source and photo-catalyst respectively to degrade toluene in the treated gas. The effects of operating parameters including initial concentration, operating gas velocity, ultraviolet light intensity and bed layer height on degradation rate of toluene have been probed into in this research. The results showed that degradation rate of toluene was independent of initial concentration (20～55mg/m3) but decreased with higher initial concentration; the degradation rate of toluene increased with gas velocity …
Time Scale Analysis Of A Fluidized-Bed Catalytic Reactor Based On A Generalized Dynamic Model, Andres Mahecha-Botero, John R. Grace, Said S.E.H. Elnashaie, C. Jim Lim
Time Scale Analysis Of A Fluidized-Bed Catalytic Reactor Based On A Generalized Dynamic Model, Andres Mahecha-Botero, John R. Grace, Said S.E.H. Elnashaie, C. Jim Lim
The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
A fluidized-bed reactor model is implemented to simulate a Maleic Anhydride (MA) reactor with special emphasis on its dynamic behaviour. The dynamic model is general enough that it can treat a wide range of catalytic systems, subject to mass and energy balances within the phases. The model represents multiple phases and regions (low-density phase, high-density phase, freeboard region) and can account for heat and mass axial and radial anisotropic dispersion, change in molar/volumetric flow due to reaction, temperature and pressure profiles, hydrodynamic regime variation, catalyst deactivation, energy options, and multiple membranes of various geometries for introduction/extraction of any compound. The …
Waste Edible Oil Fluid Catalytic Cracking In A Downer Reactor, Xiaoping Tang, Fei Wei
Waste Edible Oil Fluid Catalytic Cracking In A Downer Reactor, Xiaoping Tang, Fei Wei
The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
The waste edible oil fluid catalytic cracking process (FCC), an environment friendly process to produce clean fuel (such as gasoline, diesel) and high-value chemical materials (such as propylene), was studied in an small hot model of downer reactor under the temperature 500 ℃, the pressure 1.1×105Pa , the resident time 1 second, the ratio of catalyst to oil 12 , and MA-83 as the catalyst. Compared with other processes, the waste edible oil FCC process can realize the waster utilizing and adjust the product distribution according to the market demand, while with a convenient pretreatment to the raw materials. The …