Trickle-Bed Oxidation Reactors

Goto, Shunsaku; Levec, Janez; Smith, J. M.

doi:10.1080/03602457708081725

Cited by 58 publications

(22 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, a series of homogenous catalysts is used in order to decrease the load of organic compounds. Homogeneous catalysts show general more effective activities than heterogeneous oxidation catalysts [9,10,30], and several CWAO reactions based on homogeneous catalytic systems are known to exist [5]. Fig.…”

Section: Effect Of Homogenous Catalystsmentioning

confidence: 99%

Wet air oxidation of epoxy acrylate monomer industrial wastewater

Yang

Liu

Huang

et al. 2010

Journal of Hazardous Materials

View full text Add to dashboard Cite

Section: Effect Of Homogenous Catalystsmentioning

confidence: 99%

Wet air oxidation of epoxy acrylate monomer industrial wastewater

Yang

Liu

Huang

et al. 2010

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…Intraparticle diffusion effects are often significant. Effectiveness factors have been estimated by different authors (as reviewed by Goto et al, 1977) at : 0.5 to 0.8 for 3 by 3 mm pellets, 0.36 for 3.6-mm particles, and 0.7 to 0.9 for 0.5 to 0.8-mm particles. Therefore, the effect may be important in industrial practice.…”

Section: )mentioning

confidence: 99%

Trickle‐bed reactors: An experimental study of partial wetting effect

Ring

Missen

1989

AIChE Journal

View full text Add to dashboard Cite

The effect of partial external wetting of catalyst particles on conversion for hydrodesulfurization of dibenzothiophene in a white oil was studied in a 25-mm trickle-bed reactor at 10 MPa and 330-370°C with Mo/SiO, catalyst. The superficial liquid velocity (L,) was varied from 0.092 to 0.557 kg m-2 -s -I . Measurements of conversion were augmented by tracer, kinetics and solubility experiments. The objectives were to determine the parameters of a reactor model based on the multizone external wetting (MZEW) model for the overall effectiveness factor, qo, and to compare the measured and predicted values of vo. As the wetting efficiency, f, increases, t o also increases, but, even at the highest L , , catalyst wetting was not complete and consequently t o was lower than the value corresponding to f = 1. The MZEW model describes the experimental data better than the simpler two-zone model, based on a particular interpretation of f. The difference between the two models can be as high as 200%. Zbigniew E. Ring Ronald W. Missen Department of Chemical Engineering and Applied ChemistryUniversity of Toronto Toronto, Ontario, Canada M5S 1A4 IntroductionIncomplete wetting of catalyst particles by flowing liquid is an important factor in modeling the performance of short trickle-bed reactors, as used in pilot-plant studies for scale-up to commercial-size reactors. Two factors involved in this are the fractional coverage of the external surface by flowing liquid, and the geometry of the liquid distribution on the surface. We have previously (Ring and Missen, 1986) proposed a multizone model [termed here the multizone external wetting (MZEW) model] to account for the geometry in relating the overall effectiveness factor, qo. to the fractional coverage or wetting efficiency,J We presented a comparison of this model with the commonly-used two-zone (wetted and nonwetted regions) model (Sedricks and Kenney, 1973;DudukoviC, 1977;DudukoviC and Mills, 1978;Ramachandran and Smith, 1979), both in a simulated sense and in an actual sense with very limited data then available. The

show abstract

“…Further discussion on the interpretation of trickle bed reactor data is provided in some extensive reviews of the subject [94], [95].…”

Section: Intraparticle Limitationsmentioning

confidence: 99%