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Chemical and Catalytic Reactor Modeling by Milorad P. Duduković and Patrick L. Mills (Eds.)

By Milorad P. Duduković and Patrick L. Mills (Eds.)

content material: Trickling and pulsing transition in cocurrent downflow trickle-bed reactors with exact connection with large-scale columns / D.M. Dimenstein, S.P. Zimmerman, and K.M. Ng --
impact of the reactional procedure at the irrigation price in trickle-bed reactors / P. Ruiz, M. Crine, A. Germain, and G. L'Homme --
A comparability of present types for isothermal trickle-bed reactors : software to a version response process / P.L. generators and M.P. Duduković --
balance of trickle-bed reactors / C.H. Barkelew and B.S. Gambhir --
gasoline absorption with complicated chemical reactions : a normal computational scheme for expense calculations / P.A. Ramachandran --
Modeling of gas-liquid continuous-stirred tank reactors (CSTRs) / A.A. Shaikh and A. Varma --
The influence of fuel and liquid velocities and stable dimension on good suspension in a three-phase bubble column reactor / Barry W. Brian and Paul N. Dyer --
Bubble habit in a slurry bubble column reactor version / D.N. Smith, W. Fuchs, R.J. Lynn, D.H. Smith, and M. Hess --
A two-bubble classification version for churn turbulent bubble column slurry reactor / S. Joseph and Y.T. Shah --
Mathematical modeling of cross-flow, strong nation electrochemical reactors / P.G. Debenedetti, C.G. Vayenas, I. Yentekakis, and L.L. Hegedus --
Modeling of chemical vapor deposition reactors for the fabrication of microelectronic units / Klavs F. Jensen --
Multicomponent diffusion and response in porous catalysts / Henry W. Haynes, Jr. --
research of fixed-bed catalytic reactor types / S.I. Pereira Duarte and N.O. Lemcoff --
The optimum layout of a reactor for the hydrogenation of butyraldehyde to butanol / J.B. Cropley, L.M. Burgess, and R.A. Loke --
difficulties within the layout of the countercurrent moving-bed catalytic reactor : a geometrical process / Dimitry Altshuller --
Optimization in tubular reactor platforms / E.B. Nauman and Ramesh Mallikarjun --
secure layout of cooled tubular reactors for exothermic a number of first order reactions / K.R. Westerterp, K.J. Ptasinsky, and R.R.M. Overtoom --
balance of adiabatic reactors / C.H. Barkelew --
primary deactivation information from laboratory reactors / Eugene E. Petersen and Michael A. Pacheco --
Poisoning results in temperature-increased fixed-bed reactor operation : a comparability of experimental effects and version simulation / George J. Frycek and J.B. Butt --
Modeling of tubular nonisothermal nonadiabatic packed-bed reactors with catalyst poisoning / Qamardeep S. Bhatia and Vladimir Hlavacèk.

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Example text

G. t o mass and/or heat t r a n s f e r s across the l i q u i d f i l m . That i s the main reason why the hydrodynamics i n a t r i c k l e - b e d r e a c t o r may vary with the chemical system adopted and with the operating c o n d i t i o n s . By f i t t i n g the model of the apparent r e a c t i o n r a t e on the data reported i n the experimental s e c t i o n , we w i l l see how the parameter Ε (or L ) v a r i e s with the operating c o n d i t i o n s . COMPARISON WITH EXPERIMENTS In order t o f i t the proposed model of the bed s c a l e appa­ rent r e a c t i o n r a t e on the experimental r e s u l t s , we considered two parameters.

The randomnes of the process i s indeed accounted f o r by the p e r c o l a t i o n process. The f o l l o w i n g developments w i l l be r e s t r i c t e d t o laminar liquid flow with very low g a s - l i q u i d i n t e r a c t i o n s ; t h a t i s the flow regime p r e v a i l i n g with the operating c o n d i t i o n s adop­ ted i n the experimental work. 8 with some s i m p l i f i c a t i o n s , w i l l be presented f o r the modelling of the different processes controlling the apparent reaction rate a t the bed s c a l e .

This r e s u l t may be viewed as an upper bound on the t r i c k l e - b e d r e a c t o r conversion so that the comparison to a c t u a l experimental conversion i n d i c a t e s the r e l a t i v e degree of mass t r a n s f e r l i m i t a t i o n s . The assumption of complete c o n t a c t i n g (ricE 1) ^ estimation of mass t r a n s f e r c o e f f i c i e n t s f o r Equation 12 from a v a i l a b l e c o r r e l a t i o n s (16-18) r e s u l t s i n the c o n c l u s i o n that the process should be e n t i r e l y g a s - l i q u i d mass t r a n s f e r c o n t r o l l e d .

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