Download e-book for iPad: Fluidized-Bed Reactors: Processes and Operating Conditions by John G. Yates, Paola Lettieri

By John G. Yates, Paola Lettieri

ISBN-10: 3319395912

ISBN-13: 9783319395913

The fluidized-bed reactor is the center-piece of business fluidization techniques. This publication makes a speciality of the layout and operation of fluidized beds in lots of various commercial methods, emphasizing the reason for selecting fluidized beds for every specific procedure. The ebook begins with a short background of fluidization from its inception within the 1940’s. The authors current either the fluid dynamics of gas-solid fluidized beds and the vast experimental experiences of working structures and so they set them within the context of working methods that use fluid-bed reactors.
Chemical engineering scholars and postdocs in addition to practising engineers will locate nice curiosity during this publication.

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Additional resources for Fluidized-Bed Reactors: Processes and Operating Conditions

Example text

Shamiri et al. (2011) developed a novel two-phase model for propylene polymerization in a fluidized bed but at the time of publication no experimental validation had been obtained. Despite the considerable body of published work in this area it remains questionable whether two- and three-phase models of the kind described above are capable of giving an adequate description of polyolefin reactors. The Unipol and other similar reactors are known to operate in the turbulent regime where gas bubbles are at best ill-defined and may well be absent altogether as definite entities.

1987) describe a method for producing an attrition-resistant catalyst suitable for use in the DuPont Circulating Fluidized-bed process. Thus vanadium pentoxide (100 g) is stirred into a mixture of isobutanol (1L) and benzyl alcohol (150 g) and refluxed for 12 h. 85 % phosphoric acid (150 g) is slowly added and again refluxed for 12 h. 5H2O, is then cooled, filtered, dried and milled to give particles of 1–2 µm which are then slurried with freshly prepared polysilicic acid hydrogel to give a final solid composition containing 10 % silica.

2001). A common method of reducing the build-up of electrostatic charges in fluidized beds is to humidify the fluidizing gas but owing to the poisoning effect of water on the organometallic catalysts this cannot be used in the present case. Various techniques for dissipating electrostatic charges have been proposed by the operating companies and the patent literature contains many examples including the use of special wall coatings (Fulks et al. 1989) and static agents (Goode et al. 1989). 2 Some Individual Processes 29 conductivity of the particles (Fischer et al.

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Fluidized-Bed Reactors: Processes and Operating Conditions by John G. Yates, Paola Lettieri


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