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Full-Text Articles in Engineering
A Practical Model For A Dense- Bed Countercurrent Fcc Regenerator, Yongmin Zhang, Chunxi Lu
A Practical Model For A Dense- Bed Countercurrent Fcc Regenerator, Yongmin Zhang, Chunxi Lu
10th International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-10
In this study, a new practical countercurrent regenerator model for in-situ FCC operation optimization was proposed. A three-zone-and-two-phase gas model and a new two-CSTR-with-interchange model were used to give better descriptions on the gas and solids flow patterns, addressing the region-dependent mass transfer rates and the freeboard effect on catalyst regeneration. The model coupled mass and heat balances, hydrodynamics and reaction kinetics. The modeled results are in reasonable agreement with the commercial data from an industrial FCC regenerator under both partial and full CO combustion modes.
Study Of Calcination-Carbonation Of Calcium Carbonate In Different Fluidizing Mediums For Chemical Looping Gasification In Circulating Fluidized Beds, Prabir Basu, Bishnu Achayra, Animesh Dutta
Study Of Calcination-Carbonation Of Calcium Carbonate In Different Fluidizing Mediums For Chemical Looping Gasification In Circulating Fluidized Beds, Prabir Basu, Bishnu Achayra, Animesh Dutta
10th International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-10
Chemical looping gasification (CLG) of biomass in a circulating fluidized bed is an excellent option for production of separate streams of hydrogen rich and carbon dioxide rich gases. This process uses H2O (steam) instead of air or oxygen for gasification, and thereby produces high value nitrogen free product gas. An important feature of this process is in-process removal of carbon dioxide from the reaction site by CaO. This allows the reaction to move towards higher yield of hydrogen. Circulating fluidized bed (CFB) provides an ideal reactor configuration for such a looping reaction. A CFB based CLG unit operates somewhat similar …
The Influence Of Carbon Stripper Efficiency On Co2 Capture Rate In A Chemical-Looping Combustion Process For Solid Fuels, Marvin Kramp, Andreas Thon, Ernst-Ulrich Hartge, Stefan Heinrich, Joachim Werther
The Influence Of Carbon Stripper Efficiency On Co2 Capture Rate In A Chemical-Looping Combustion Process For Solid Fuels, Marvin Kramp, Andreas Thon, Ernst-Ulrich Hartge, Stefan Heinrich, Joachim Werther
10th International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-10
In the present work a Chemical-Looping Combustion process for solid fuels is simulated on the 100 MWth scale. The coal is gasified inside the fuel reactor by recirculated CO2 and H2O. A carbon stripper downstream of the fuel reactor is used to reduce the carryover of char from the fuel to the air reactor. The influence of the carbon stripper on the CO2 capture rate is investigated. The results demonstrate the significance of the carbon stripper in this process.
Understanding Standpipe Hydrodynamics Using Electrical Capacitance Tomography, Reddy Karri Dr, Changhua Qui, Robert Joachim S.B
Understanding Standpipe Hydrodynamics Using Electrical Capacitance Tomography, Reddy Karri Dr, Changhua Qui, Robert Joachim S.B
10th International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-10
Standpipes are often the bottleneck in a circulating fluidized bed processes. Understanding the pressure build and dissipation in a standpipe is critical in designing and operating a standpipe that can meet production needs. However, this critical component of a circulating fluidized bed (CFB) is often neglected in the design process which usually results in an underperforming unit operation. In an effort to better design new standpipe and to better optimize existing ones, electrical capacitance tomography (ECT) was evaluated in a 7-inch (18-cm) diameter standpipe to understand the gas-solid hydrodynamics in a standpipe with respect to circulation rates and aeration strategies.
Design Requirements For Pressurized Chemical Looping Reforming, Tobias Pröll, Hermann Hofbauer, K. Marx
Design Requirements For Pressurized Chemical Looping Reforming, Tobias Pröll, Hermann Hofbauer, K. Marx
10th International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-10
A key issue in chemical looping reforming is to operate the process under pressurized conditions. Applicability of dual fluidized bed systems, currently used in atmospheric chemical looping processes, is affected by pressure. Critical design issues were studied and experimentally verified by cold flow model experiments. It turns out that it is important to achieve sufficient global solids circulation and to keep the pressure difference between the reactors low enough for proper operation of the loop seals.
Conference Program, Engineering Conferences International
Conference Program, Engineering Conferences International
Functional Glasses: Properties And Applications for Energy and Information
No abstract provided.
Conference Program, Ted Knowlton
Conference Program, Ted Knowlton
10th International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-10
No abstract provided.
Reflections On Mathematical Models And Simulation Of Gas-Particle Flows, Sankaran Sundaresan
Reflections On Mathematical Models And Simulation Of Gas-Particle Flows, Sankaran Sundaresan
10th International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-10
No abstract provided.
Gas Tracer Study In A Non Mechanical L-Valve, Mohammad-Mahdi Yazdanpanah, Ali Hoteit, Ann Forret, Thierry Gauthier, Arnaud Delebarre
Gas Tracer Study In A Non Mechanical L-Valve, Mohammad-Mahdi Yazdanpanah, Ali Hoteit, Ann Forret, Thierry Gauthier, Arnaud Delebarre
10th International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-10
No abstract provided.
New System For The Continuous Removal Of Bio-Char From Bubbling Bed Pyrolyzers, Craig Mara, Lorenzo Ferrante, Franco Berruti, Cedric Briens
New System For The Continuous Removal Of Bio-Char From Bubbling Bed Pyrolyzers, Craig Mara, Lorenzo Ferrante, Franco Berruti, Cedric Briens
Bioenergy III: Present and New Perspectives on Biorefineries
No abstract provided.
Effects Of Biochar On Products Yields During Biomass Pyrolysis In A Bubbling Bed Reactor, Pietro Palmisano, Franco Berruti, Cedric Briens
Effects Of Biochar On Products Yields During Biomass Pyrolysis In A Bubbling Bed Reactor, Pietro Palmisano, Franco Berruti, Cedric Briens
Bioenergy III: Present and New Perspectives on Biorefineries
No abstract provided.
Fluidized Bed Pyrolysis Of Lignin In A Bubbling Bed Reactor, Pietro Palmisano, Valentina Lago, Franco Berruti, Cedric Briens
Fluidized Bed Pyrolysis Of Lignin In A Bubbling Bed Reactor, Pietro Palmisano, Valentina Lago, Franco Berruti, Cedric Briens
Bioenergy III: Present and New Perspectives on Biorefineries
No abstract provided.
Meat And Bone Meal Pyrolysis Study In A Laboratory-Scale Bubbling Fluidized Bed Reactor, Federico M. Berruti, Lorenzo Ferrante, Cedric Briens, Franco Berruti
Meat And Bone Meal Pyrolysis Study In A Laboratory-Scale Bubbling Fluidized Bed Reactor, Federico M. Berruti, Lorenzo Ferrante, Cedric Briens, Franco Berruti
Bioenergy III: Present and New Perspectives on Biorefineries
No abstract provided.