The grid region in a fluidized bed reactor

Behie, Leo A.; Kehoe, Peter

doi:10.1002/aic.690190536

Cited by 75 publications

(46 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This was also assumed in the model previously developed by our group 12 and is a suitable assumption when the reaction is not very fast. 19 Therefore, in order to describe both models, their various parts (gas and solid flow) will be discussed in some detail, and the resulting equations shown later. Two reactions have been simulated for both reactors (TZFBR and ICFBR): propane dehydrogenation and oxidation of n-butane to maleic anhydride.…”

Section: Mathematical Reactor Modelmentioning

confidence: 99%

Modeling of fluidized bed reactors with two reaction zones

et al. 2006

View full text Add to dashboard Cite

Section: Mathematical Reactor Modelmentioning

confidence: 99%

Modeling of fluidized bed reactors with two reaction zones

et al. 2006

View full text Add to dashboard Cite

“…In this case (that is, gas-solid fluidization), the flow dynamics responsible for the existence of the distributor region are well understood. They are attributed to stirring effects of high-momentum gas jets issuing forth from the orifices of the distributor, as originally pointed out by Behie and Kehoe (1973). Any analogy between liquid-solid fluidized beds and gas-solid fluidized beds is not valid, since the fluidizing medium in the latter case is a gas that has a negligible density as compared to the density of the solid phase present in the bed.…”

Section: Introductionmentioning

confidence: 92%

Distributor effects in liquid fluidized beds of low‐density particles

1991

Self Cite

View full text Add to dashboard Cite

The effect offlow nonuniformities existing near the distributor of a liquid fluidized bed containing very low-density particles (p, = 1.05 g/mL) has been investigated experimentally. Immobilized enzyme or cell bioreactors operated as liquid fluidized beds often employ low-density particles as the support matrix containing the immobilized biocatalyst. With poorly designed multihole distributors, dead zones can be created which seriously undermine the performance of the bioreactor due to the lack of nutrients. Design guidelines are provided for distributors to minimize the inlet flow disturbances, and hence eliminate potential distributor region problems. As a result, the dispersion model, which is normally used for design purposes, can then be applied.

show abstract

“…C2H4+H2 > C2H6 (1) The physical properties of the catalyst are shown in Table 1. The reaction was performed in the presence of the large amount of inert gas N2.…”

Section: Methodsmentioning

confidence: 99%

Hydrogenation of ethylene in two dimensional gas-solid fluidised bed with perforated plate.

Toei

Oichi

Hayashi

et al. 1977

J. Chem. Eng. Japan

View full text Add to dashboard Cite

A fairly rapid chemical reaction, i.e., hydrogenation of ethylene by palladium catalyst, was carried out at a room temperature in a two dimensional fluidised bed with a perforated plate distributor.The results were considerably affected by the behaviour of the bed near its bottom.The measured hydrogen conversion was compared with that predicted by the so-called "coalescence model". Consistency of the experimental and calculated results was fairly good. The significance of various parameters included in the model was also investigated. The parameters examined were the gas interchange coefficients, the volume fraction of particles in the bubble, and the gas flow rate as bubbles.In conclusion, it was pointed out that the deviation of gas flow rate as bubbles from that predicted by the two phase theory at the bottom of bed aflFected significantly the conversion of a rapid chemical reaction.

show abstract

The grid region in a fluidized bed reactor

Cited by 75 publications

References 1 publication

Modeling of fluidized bed reactors with two reaction zones

Modeling of fluidized bed reactors with two reaction zones

Distributor effects in liquid fluidized beds of low‐density particles

Hydrogenation of ethylene in two dimensional gas-solid fluidised bed with perforated plate.

Contact Info

Product

Resources

About