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Showing 1 to 16 of 16 for “"Circulating fluidized bed"”.
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Nitrogen oxide emissions from circulating fluidized bed combustion
… has been carried out on a pilot scale circulating fluidized bed combustor of cross-section 0.15 x 0.15 m and height 7.3 m. Coals of various ranks, including anthracite, bituminous, sub-bituminous and lignite, as well as one petroleum coke, were used in the study. Gas emissions in the …
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Gas phase hydrodynamics inside a circulating fluidized bed
Circulating Fluidized Beds (CFB's) offer many advantages over traditional pulverized coal burners in the power generation industry. They operate at lower temperatures, have better environmental emissions and better fuel flexibility. The motion of solids inside a CFB has been studied extensively …
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Evaporating cross flow spray jets in gas-solid circulating fluidized bed
… found in many industrial applications, including fluidized catalytic cracking in petroleum refinery process, and wet scrubbing process. This dissertation study is aimed to understand the gas-solid-liquid three-phase flow structure, phase interactions and transport in a gas-solid circulating …
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Particle-wall shear stress measurements within the standpipe of a circulating fluidized bed
… standpipes are essential to the operation of circulating fluidized bed systems (CFB), their hydrodynamics are poorly understood, and are often unpredictable in displaying effects such as hysteresis which could be due to forces such as particle-wall shear stress.;In this research the …
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Heat transfer by particle convection at the wall of a circulating fluidized-bed
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Numerical modeling of cold flow and hot gas desulfurization in a circulating fluidized bed
… coal gas using zinc oxide as the sorbent in a circulating fluidized bed and in the process identifying the parameters that affect the performance of the sulfidation reactor. Two different gas-solid reaction models, the unreacted shrinking core (USC) and the grain model were applied to take into …
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Experimental simulation of the hydrodynamics of dissimilar solids in a pressurized circulating fluidized bed
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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An experimental investigation of particle and gas convection heat transfer in a circulating fluidized bed
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Modelling and Multi-objective Optimization of Continuous Protein Recovery in Liquid-Solid Circulating Fluidized Bed (LSCFB)
In recent years, liquid-solid circulating fluidized beds (LSCFBs) are being applied as a reactor system in a number of new applications. This study focused on the modelling and multi-objective optimization of LSCFB system for continuous protein recovery process. A mathematical model was developed …
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Separation of small particles due to density differences in a CFB riser system
… and do not effectively recover fine particles. A circulating fluidized bed riser system was developed as an exploratory system for dry separation by density that will eliminate many problems associated with wet separation. The system sends an air-solid mixture through a vertical riser. The flow …
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Evaporating crossflow sprays in gas-solid flows
… In this study, in addition to a laboratory scale circulating fluidized bed to provide a continuous gas-solid flows, a laser/lamp-light assisted visualization and image analysis system and a computer aided temperature measurement system have been developed which enables measurement of spray …
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Process design, dynamics, and techno-economic analysis of a sustainable coal, wind, and small modular nuclear reactor hybrid energy system
… The coal system will use a pressurized circulating fluidized bed system, which can utilize both coal and biomass as a carbon feedstock. This system also employs a high temperature steam co-electrolysis unit for the utilization of carbon dioxide emissions for the production of synthetic …
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Gas fluidization of nanoparticles
… from a loud speaker (acoustic assistance) and in-bed magnets that were excited by an external oscillating magnetic field (magnetic assistance). Thirdly, exploratory experimental research on the use of nanoparticle agglomerates as a granular filtration media for airborne fine particles is …
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Numerical Simulation of Liquid-Solid Circulating Fluidized Beds
Liquid-solid circulating fluidized bed (LSCFB) reactors are obtaining extensive attraction in the extraction process of functional proteins from industrial broth. A typical LSCFB is comprised of a riser, a downcomer, a liquid-solid separator, a top solids-return pipe and a bottom solids-return pipe. …
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Snižování obsahu spalitelných látek v úletovém popelu
Práca pojednáva o vzniku, využití, výhodách a nevýhodách fluidnej vrstvy. Ďalej popisuje závod Elektrárne Vojany SE a.s., proces výroby a použitú technológiu cirkulačných fluidných kotlov s ich prevádzkovými nedostatkami. Práca zhŕňa návrhy riešenia nedostatkov podané Technologickou univerzitou v …