SIMULATE THE FLOW IN MONOLITH REACTORS USING CFD
Abstract
The objective of this research work is to simulate the flow in monolith reactors using computational fluid dynamics for both single channel and monolith bed. It proposes a co-current down flow monolith reactor system to investigate the flow distribution characteristics in a 2 inch monolith reactor equipped with selected types of distributors and operated in the Taylor flow regime. The effects of liquid distributor type and the liquid and gas velocities within the desired flow regime of Taylor flow on the flow distribution have also been investigated and provided. The existing single tube model for the Taylor flow regime has modified by integrating the hydrodynamics and kinetics to predict the performance of monolith reactor. The analysis on both single channel and monolith bed has been done and compared with the experimental data provided.References
Heibel, K. Achim; Jamison, A Joshua; Woehl,
Pierre; Kapteijn, Freek; Moulijn and A. Jacob,
Industrial and Engineering Chemistry
Research 43, No. 16 (2004) 4848.
Liu Hui, Zhao Jundong, Li. Chengyue andJi.
Shengfu, Catalysis Today, 105 (2004) 401.
J.M. Van Baten and R. Krishna, Chemical
Engineering Science 59 (2004) 2535.
J.M. Van Baten and R. Krishna, Chemical
Engineering Science 60 (2005) 1117.
P.J.M. Lebens, F. Kapteijn, S.T. Sie and J.A.
Moulijn, Chemical Engineering Science 54,
No. 10 (1999) 1359.
P.J.M. Lebens, M.M. Stork, F. Kapteijn, S.T.
Sie and J.A. Moulijn, Chemical Engineering
Science 54, No. 13-14 (1999) 2381.
PJM. Lebens, J.J. Heiszwolf, F. Kapteijn,
S.T. Sie and J.A. Moulijn, Chemical
Engineering Science 54, No. 21 (1999) 5119.
P.J.M. Lebens R. Van der Meijden, R.K.
Edvinsson, F. Kapteijn S.T. Sie and J.A.
Moulijn, Chemical Engineering Science 52,
No. 21-22 (1997) 3893.
M.H. Al-Dahhan , A. Kemoun, A.R.
Cartolano, S. Roy, R. Dobson and J.
Williams, “Measuring gas–liquid distribution
in a pilot scale monolith reactor via an
Industrial Tomography Scanner (ITS),â€
Chemical Engineering Journal, 2006.
R. Natividad, J. Cruz-Olivares, R.P. Fishwick,
J. Wood and J.M. Winterbottom, Fuel 86
(2007) 1304.
S. Roy, “Phase Distribution and Performance
Studies of Gas-Liquid Monolith Reactor,â€
Ph.D Thesis, Department of Chemical
Engineering, Washington University in St.
Louis, Missouri, USA (2006).