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Modelling of Fluidized Bed Reactors
International Journal of Chemical Reactor Engineering, 2003The fluidized bed reactor has a lot of advantages: excellent gas-solid contacting, no hot spots even with highly exothermal reactions, good gas-to-particle and bed-to-wall heat transfer and the ease of solids handling which is particularly important if the catalyst is quickly ageing.
Joachim Werther, Ernst-Ulrich Hartge
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Siliconizing in a Fluidized Bed Reactor
Key Engineering Materials, 2013Fluidized bed technology has been used for surface engineering applications in the deposition of hard and/or corrosion resistant layers e.g. aluminizing, chromizing, nitriding, carburizing, boronizing. In the present paper we used fluidized bed technology (FBT) to deposit silicide coatings on steels.
Konstantinos Anthymidis +3 more
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Applications of Fluidized Bed Reactors in Biocatalysis
ChemBioChemThe main objective of this article is to review previous contributions on the applications of fluidized bed reactors (FBR) in biocatalysis. FBR combines the properties of a stirred tank reactor and a continuous tubular reactor, making it an efficient system for carrying out enzymatic reactions with immobilized enzymes.
Nadia Guajardo +3 more
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2012
The name “fluidized bed reactors” (FBR) is a generic term and encompasses a variety of engineering systems including chemical reactors, combustors, gasifiers, calcifiers, driers, etc. The common characteristic of the FBR class of engineering systems is the presence of the solid particles that are carried by the fluid and exist in a fluidized state. The
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The name “fluidized bed reactors” (FBR) is a generic term and encompasses a variety of engineering systems including chemical reactors, combustors, gasifiers, calcifiers, driers, etc. The common characteristic of the FBR class of engineering systems is the presence of the solid particles that are carried by the fluid and exist in a fluidized state. The
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Circulating fluidized-bed reactors
Chemical Engineering Science, 1997Abstract This paper develops a flow and contacting model to represent a CFB. Best estimates of contacting efficiencies are presented for the turbulent, fast fluidized, and pneumatic transport regimes of the CFB. Material balances are presented, ending up with conversion equations for first-order solid-catalyzed gas-phase reactions. Four examples show
Daizo Kunii, Octave Levenspiel
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Biological Sulfide Oxidation in a Fluidized Bed Reactor
Environmental Technology, 2001Feasibility of a laboratory scale fluidized bed process for biological sulfide oxidation to elemental sulfur and the formation of well-settleable sulfur sludge is demonstrated. Sulfide oxidation strongly depends upon oxygen concentration, sulfide loading rate and upflow velocity. At reactor dissolved oxygen concentrations (DOr) higher than 0.1 mg l(-1),
A P, Annachhatre, S, Suktrakoolvait
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Design of a fluidized bed reactor for microencapsulated urease
Applied Biochemistry and Biotechnology, 1984A fluidized bed reactor was designed, constructed, and tested for handling microencapsulated urease. The working volume of the reactor was 10 mL, with a minimum fluidization velocity of 7.7 × 10−5 m/s. An even suspension of the microcapsules was obtained at fluid velocities between 1.5 × 10 4 and 6.0 × 10−4 m/s without breakage of the shear-sensitive ...
R. J. Neufeld +2 more
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2008
In this chapter the characteristics of fluidized gas–solid suspensions are described, and the basic designs of fluidized bed reactors are sketched. Several modeling approaches that have been applied to described these units are outlined.
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In this chapter the characteristics of fluidized gas–solid suspensions are described, and the basic designs of fluidized bed reactors are sketched. Several modeling approaches that have been applied to described these units are outlined.
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Gas mixing in a turbulent fluidized bed reactor
The Canadian Journal of Chemical Engineering, 2000AbstractA series of experiments has been conducted to study mixing and hydrodynamic behaviour of a downward facing sparger in a turbulent fluidized bed reactor. Using pressure measurement techniques, two flow discharge modes were identified around the sparger by injecting a gas tracer into the bed.
Rahmat Sotudeh‐Gharebaagh +1 more
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Modeling Fluidized Bed Reactors
Catalysis Reviews, 1978Abstract Xodeling fluidized bed reactors may be described on the one hand as a never-endizrg study aesigaed to keep minds busy and revoluriona n aavtUes at a Low ebb o r on the orher hand as a task to make stmng men weep. Be thac as lt may, we are now very near solutions of reasonable finality.
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