CFD Hydrodynamics Analysis of Syngas Flow in Slurry Bubble Column

Document Type: Research Paper

Author

Central Mining Institute (GIG) Department of Energy Saving and Air Protection

Abstract

In this paper, a CFD model of syngas flow in slurry bubble column was developed. The model is based on an Eulerian-Eulerian approach and includes three phases: slurry of solid particles suspended in paraffin oil and syngas bubbles. Numerical calculations carried out for catalyst particles, bubble coalescence and breakup included bubble-fluid drag force and interfacial area effects. Also, the effects of solid particles existing in liquid phase were described.

Keywords


Full Text

[1]          B.Tabiś, R. Grzywacz,  “Numerical and technological properties of bubble column bioreactors for aerobic processes”. Computers and Chemical Engineering 35, 212-219, 2011 DOI: 10.1002/aic.690280302.

[2]          W.D Deckwer, E. Alper, “Katalytische Suspensions‐Reaktoren“, Chem. Ing. Tech. 52, 219–228,1980.

[3]          P.Ramachandran, R. Chaudhari, “Three-phase Catalytic Reactors. Gordon and Breach“ NewYork, NY. 1983. 

[4]          Y.T.Shah, S.Joseph, D.N.Smith, J.A.Ruether, “Two-bubble class model for churn turbulent bubble-column reactor”. Ind. Eng.Chem.Process Des. Dev. 24, 1985, 1096–1104.

[5]          N.Rados, M.H. Al-Dahhan, M.P Dudukovic, “Dynamic modeling of slurry bubble column reactors”. Ind.Eng.Chem.Res. 44, 6086–6094, 2005.

[6]          M.Henze M., G. Leslie, C. P.,Gujer, W.Marais, T. Matsuo, “A general model for single-sludge wastewater treatment systems.” Water Research, 21, 405–515,1987.

[7]          R.Krishna, J. Swart, J. Ellenberger, G.B. Martina, C.Maretto,  “Gas holdup in slurry bubble columns: effect of column diameter and slurry concentrations“. AIChEJ  43, 311–316, 1996.

[8]          K.Ekambara, J.B. Joshi, “CFD simulation of mixing and dispersion in bubble columns.” Chem. Eng. Res. Des. 81, 987–1002, 2003.

[9]          S.Schluter, A.Steiff, P.M. Weinspach,   “Modelling and simulation of bubble column reactors.” Chem.Eng.Process. 31, 97–117, 1992.

[10]       A.Troshko, F. Zdravistch, ”CFD modeling of slurry bubble column reactors for Fisher–Tropsch synthesis”, Chemical Engineering Science 64 (2009) 892 – 903.

[11]       P.Chen, J. Sanyal, M.P.Dudukovic, “Numerical simulation of bubble columns flows: effect of different breakup and coalescence closures.” Chemical Engineering Science 60, 1085–1101, 2005.

[12]       R.Krishna, J.Ellenberger, ”Gas hold up in bubble column reactors operating in the churn-turbulent flow regime”. AIChEJ 42, 2627–2634,1997.

[13]       Q.Nana,  K.Zhang, Y. Yong, “CFD Simulation of Hydrodynamics in Bubble Columns with Perforated Plate Distributor.” International Conference Materials for Renewable Energy and Environment (ICMREE) 3, 703-707,2013.DOI: 10.1109/ICMREE.2013.6893774

[14]       P.Klug, A.Vogelpohl A, “ Bubble formation at sieve plates-effects on gas hold  up in bubble columns.” Ger. Chem. Engng 9, 93-101,1986.

[15]       P.Chen, M.P. Dudukovic, J. Sanyal, “Three-dimensional simulation of bubble column flows with bubble coalescence and breakup.” Fluid Mechanics and Transport Phenomena 51 (3), 696–712, 2005.

[16]       P.Mills, “The Fischer–Tropsch synthesis in slurry bubble column reactors: analysis of reactor performance using the axial dispersion model”. Fuel Energy 77,1997.

[17]       S.Saxena,” Bubble column reactors and Fischer–Tropsch synthesis. Catalysis Reviews—Science and Engineering 37 (2), 227–309,1995.”

[18]       A.Wodołażski, P.Mocek, I.Gil, E.Jędrysik, “Gas dynamics of stack-type microreactors with various filling shape.” Przem. Chem. 92, 3, 374,2013.

[19]       A.Wodołażski, “Modeling of the methanol synthesis in plate microreactor. Electrical Review. 1, 76, 2014. DOI:10.12915/pe..01.18.

[20]       J.Hinze,” Turbulence,” McGraw-Hill Book Co., NY, 1975

[21]       M.Ishii and N.Zuber,” Drag coefficient and relative velocity in bubbly, droplet or particulate flows” A/ChE J., 1979, vol. 25, pp. 843-55.

[22]       A.Cockx, Z. Do-Quang, M. Roustan, ”Use of computational fluid dynamics for simulating hydrodynamics and mass transfer in industrial ozonation towers.” Chem. Engng Sci. 54, 5085–5090,1999.

[23]       Weibin S., Yang N., Yang X., “A kinetic inlet model for CFD simulation of large-scale bubble columns Chemical Engineering Science 158 (2017) 108 – 116, 2017.

[24]       A. Wodołażski , “Modelling of slurry hydrodynamics with two-blade impeller in tank reactor “. Maintenance and Reliability. 16 (4), 533–536, 2014.

[25]       N. Rados, M.H. Al-Dahhan, M.P. Dudukovic. “Modeling of the Fischer– Tropsch synthesis in slurry bubble column reactors.” Catal. Today 79, 211–218, 2003.