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A fluidized bed reactor (FBR) is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. In this type of reactor, a fluid (gas or liquid) is passed through a solid granular material (usually a catalyst ) at high enough speeds to suspend the solid and cause it to behave as though it were a fluid.
Mechanically Fluidized Reactor (MFR): A mechanical stirrer is used to mobilize particles and achieve properties similar to that a well-mixed fluidized bed. It does not require fluidization gas. [7] Narrow fluidized beds (NFB): For this case, the ratio between the tube and the grain diameters is equal or less than around 10. The dynamics of the ...
In designing a circulating fluidized bed, with constant temperature distribution for either endothermic or exothermic reactions, in order to determine the appropriate design for cooling or heating of the circulating fluidized bed reactors, a good approximation of heat transfer rates are necessary for better control so that the reactor can ...
An annular fluidized bed (AFB) can have a wide range of applications due to its ability to be used in conjunction with other fluidized bed type. [2] The AFB is ideal for applications that require a fast and efficient heat and mass transfer with intense mixing. These applications can range from dryers, heat exchangers, heaters, coolers and reactors.
Ebullated bed reactors are a type of fluidized bed reactor that utilizes ebullition, or bubbling, to achieve appropriate distribution of reactants and catalysts.The ebullated-bed technology utilizes a three-phase reactor (liquid, vapor, and catalyst), and is most applicable for exothermic reactions and for feedstocks which are difficult to process in fixed-bed or plug flow reactors due to high ...
Fluidized bed combustion (FBC) is a combustion technology used to burn solid fuels. In its most basic form, fuel particles are suspended in a hot, bubbling fluidity bed of ash and other particulate materials ( sand , limestone etc.) through which jets of air are blown to provide the oxygen required for combustion or gasification.
Typically on the scale of 10-300 microns. One key advantage of using a fluidized bed reactor is the ability to achieve a highly uniform temperature in the reactor. The fluidized bed reactors are best for bio-catalysts or enzymes doped on solids since the solid are fluidized by the working fluid and there is no mechanical impact on the solids.
A bubble column reactor is a chemical reactor that belongs to the general class of multiphase reactors, which consists of three main categories: trickle bed reactor (fixed or packed bed), fluidized bed reactor, and bubble column reactor. [1]
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