A Review of Techniques for the Process Intensification of Fluidized Bed Reactors

摘要/Abstract

摘要： Fluidized beds enable good solids mixing,high rates of heat and mass transfer,and large throughputs,but there remain issues related to fluidization quality and scale-up.In this work I review modification techniques for fluidized beds from the perspective of the principles of process intensification(PI),that is,effective bubbling suppression and elutriation control.These techniques are further refined into(1)design factors,e.g.modifying the bed configuration,or the application of internal and external forces,and(2)operational factors,including altering the particle properties(e.g.size,density,surface area)and fluidizing gas properties(e.g.density,viscosity,or velocity).As far as two proposed PI principles are concerned,our review suggests that it ought to be possible to gain improvements of between 2 and 4 times over conventional fluidized bed designs by the application of these techniques.

关键词: process intensification, fluidization, fluidized bed reactor

Abstract: Fluidized beds enable good solids mixing,high rates of heat and mass transfer,and large throughputs,but there remain issues related to fluidization quality and scale-up.In this work I review modification techniques for fluidized beds from the perspective of the principles of process intensification(PI),that is,effective bubbling suppression and elutriation control.These techniques are further refined into(1)design factors,e.g.modifying the bed configuration,or the application of internal and external forces,and(2)operational factors,including altering the particle properties(e.g.size,density,surface area)and fluidizing gas properties(e.g.density,viscosity,or velocity).As far as two proposed PI principles are concerned,our review suggests that it ought to be possible to gain improvements of between 2 and 4 times over conventional fluidized bed designs by the application of these techniques.

Key words: process intensification, fluidization, fluidized bed reactor

张维. A Review of Techniques for the Process Intensification of Fluidized Bed Reactors[J]. CIESC Journal, 2009, 17(4): 688-702.

ZHANG Wei. A Review of Techniques for the Process Intensification of Fluidized Bed Reactors[J]. , 2009, 17(4): 688-702.

参考文献

1 Kunii,D.,Levenspiel,O.,Fluidization Engineering,John Wiley&Sons,US(1969).
2 Davidson,J.F.,Harrison,D.,Fluidization,Academic Press,US (1971).
3 Kwauk,M.,Fluidization:Idealized and Bubbleless,with Applications,Ellis Horwood,New York(1992).
4 Molerus,O.,“Interpretation of Geldart's type A,B,C and D powders by taking into account interparticle cohesion forces”,Powder Technol.,33,81-87(1982).
5 Baeyens,J.,Geldart,D.,Wu,S.Y.,“Elutriation of fines from gas fluidized beds of Geldart A-type powders-effect of adding superfines”,Powder Technol.,71,71-80(1992).
6 Steeneken,P.A.M.,Woortman,A.J.J.,Gerritsen,A.H.,Poort,H., “The influence of flow conditioners on some mechanical properties of potato starch powder”,Powder Technol.,47,239-246(1986).
7 Seville,J.P.K.,Clift,R.,“The effect of thin liquid layers on fluidization characteristics”,Powder Technol.,37,117-129(1984).
8 Piepers,H.W.,Cottaar,E.J.E.,Verkooijen,A.H.M.,Rietema,K., “Effect of pressure and type of gas on particle-particle interaction and the consequences for gas-solid fluidization behavior”,Powder Technol.,37,55-70Å1984).
9 Bohle,W.,van Swaaj,W.P.M.,Fluidization,Davidson,J.F.,Keairns, D.L.,eds.,Cambridge University Press,UK,167(1978).
10 Botterill,J.S.M.,Desai,M.,“Limited factors in gas-fluidized bed heat transfer”,Powder Technol.,6,231-238(1972).
11 Chitester,D.C.,Kornosky,R.M.,Fan,L.S.,Danko,J.,“Characteristics of fluidization at high pressure”,Chem.Eng.Sci.,39,253-261 (1984).
12 Cui,H.,Chaouki,J.,“Effects of temperature on the local two-phase flow structure in bubbling and turbulent fluidized beds of FCC particles”,Chem.Eng.Sci.,59,3413-3422(2004).
13 Sunol,A.K.,Kosky,J.,Murphy,M.,Hansen,E.,Jones,J.,Mierau, B.,Sunol,S.,“Supercritical fluid aided encapsulation of particles in a fluidized bed environment”,In:Proc.5th Meeting on Supercritical Fluids,Nice(1998).
14 Liu,D.J.,Kwauk,M.S.,Li,H.Z.,“Aggregative and particulate fluidization—The two extremes of a continuous spectrum”,Chem.Eng. Sci.,51,4045-4063(1996).
15 Vogt,C.,Schreiber,R.,Brunner,G.,Werther,J.,“Fluid dynamics of the supercritical fluidized bed”,Powder Technol.,158,102-114 (2005).
16 Niu,F.,Subramaniam,B.,“Particle fluidization with supercritical carbon dioxide:Experiments and theory”,Ind.Eng.Chem.Res.,46, 3153-3156(2007).
Geldart,D.,“The design of distributor for gas-fluidized beds”, Powder Technol.,42,67-78(1986).
18 Massimilla,L.,Volpicelli,G.,Raso,G.,“A study on pulsating gas fluidization of beds of particles”,Chem.Eng.Prog.Symp.Ser.,62, 63-70Å1966).
19 Wong,H.W.,Baird,M.H.I.,“Fluidization in a pulsed gas flow”, Chem.Eng.J.,2,104-113(1971).
20 van den Bleek,C.M.,Coppens,M.O.,Schouten,J.C.,“Application of chaos analysis to multiphase reactors”,Chem.Eng.Sci.,57, 4763-4778(2002).
21 Zhu,S.,Lee,S.W.,“Co-combustion performance of poultry wastes and natural gas in the advanced swirling fluidized bed combustor (SFBC)”,Waste Management,25,511-518(2005).
22 Zhou,L.X.,Li,Y.,Chen,T.,Xu,Y.,“Studies on the effect of swirl numbers on strongly swirling turbulent gas-particle flows using a phase-Doppler particle anemometer”,Powder Technol.,112,79-86 (2000).
23 Yang,G.,Nieh,S.,“On the suspension layers in the freeboard of vortexing fluidized beds”,Powder Technol.,57,171-179(1989).
24 Nieh,S.,Yang,G.,Zhu,A.Q.,Zhao,C.S.,“Measurement of gas-particle flows and elutriation of an 18 inch i.d.cold vortex fluidized-bed combustion model”,Powder Technol.,69,139-146 (1992).
25 Lee,J.K.,Lee,K.H.,Jang,J.G.,Shin,Y.S.,Chun,H.S.,“Effect of parameters on performance of two-stage swirl-flow fluidized bed coal combustors”,J.Chem.Eng.Jpn.,24,70Å-70Å(1991).
26 Lee,J.K.,Hu,C.G.,Shin,Y.S.,Chun,H.S.,“Combustion characteristics of a two-stage swirl-flow fluidized bed combustor”,Can.J. Chem.Eng.,68,824-830(1990).
27 Lin,C.,Teng,J.,Chyang,C.,“Evaluation of the combustion efficiency and emission of pollutants by coal particles in a vortexing fluidized bed”,Combust.Flame,110,163-172(1997).
28 Nieh,S.,Yang,G.,“Particle flow pattern in the freeboard of a vortexing fluidized bed”,Powder Technol.,50,121-131(1987).
29 Baxerres,J.L.,Haewsung,S.,Gilbert,H.,“‘Whiring Bed':A new technique for gas fluidization of large particles”,Lebensm.Wiss. Technol.,10,191-197(1977).
30 Ouyang,F.,Levenspiel,O.,“Spiral distributor for fluidized beds”, Ind.Eng.Chem.Process Des.Dev.,25,504-507(1986).
31 Olowson,P.A.,“Influence of pressure and fluidization velocity on the hydrodynamics of a fluidized bed containing horizontal tubes”, Chem.Eng.Sci.,49,2437-2446(1994).
32 Mojtahedi,W.,“Effect of an immersed tub-tank in a gas fluidized bed”,Int.J.Heat Mass Transfer,30(6),1095-1101(1987).
33 Yates,J.G.,Ruiz-Martinez,R.S.,Cheesman,D.J.,“Prediction of bubble size in a fluidized bed containing horizontal tubes”,Chem. Eng.Sci.,45,1105-1111(1990).
34 Overcashier,R.H.,Todd,D.B.,Olney,R.B.,“Some effects of baffles on a fluidized system”,AIChE.J.,5,54-60(1959).
35 Tweddle,T.A.,Capes,C.E.,Osberg,G.L.,“Effect of screen packing on entrainment from fluidized beds”,Ind.Eng.Chem.Process Des. Dev.,9,85-88(1970Å.
36 Dutta,S.,Suciu,G.D.,“An experimental study of the effectiveness of baffles and internals in breaking bubbles in fluid beds”,J.Chem. Eng.Jpn.,25,345-348(1992).
37 Pydisetty,Y.,Krishnaiah,K.,Varma,Y.B.G.,“Axial dispersion of solids in spiral fluidized beds”,Powder Technol.,59,1-9(1989).
38 Saunders,J.H.,Chao,B.T.,Soo,S.L.,“Performance of a device for entrainment reduction and smoother operation of a fluidized bed”, Powder Technol.,35,233-239(1983).
39 Callen,A.,Moghtaderi,B.,Galvin,K.P.,“Use of parallel inclined plates to control elutriation from a gas fluidized bed”,Chem.Eng. Sci.,62,356-370Å2007).
40 Kim,Y.T.,Song,B.H.,Kim,S.D.,“Entrainment of solids in an internally circulating fluidized bed with draft tube”,Chem.Eng.J.,66, 105-110(1997).
41 Mukadi,L.,Lavallee,R.J.,Legros,R.,Guy,C.,“Development of an internally circulating fluidized bed combustor for treatment of industrial solid wastes”,In:Proc.14th Int.Conf.FBC,ASME, 627-632(1997).
42 Milne,B.J.,Behie,L.A.,Berruti,F.,“Recycling of waste plastics by ultrapyrolysis using an internally circulating fluidized bed reactor”,J. Anal.Appl.Pyrolysis,51,157-166(1999).
43 Benali,M.,Guy,C.,Chaouki,J.,“Thermal treatment of divided solids by gas-contact process”,Chem.Eng.Proc.,31,277-284(1992).
44 Lovett,S.,Berruti,F.,Behie,L.A.,“Ultrapyrolytic upgrading of plastic wastes and plastics/heavy oil mixtures to valuable light gas products”,Ind.Eng.Chem.Res.,36,4436-4444(1997).
45 Lee,J.M.,Kim,Y.J.,Kim,S.D.,“Catalytic coal gasification in an internally circulating fluidized bed reactor with draft tube”,Appl. Therm.Eng.,18,1013-1024(1998).
46 Berggren,J.C.,Bjerle,I.,Eklund,H.,Karlsson,H.,Svensson,O., “Application of chemical and physical operations in a circulating fluidized bed system”,Chem.Eng.Sci.,35,446-455(1980).
47 Kim,Y.J.,Lee,J.M.,Kim,S.D.,“Coal gasification characteristics in an internally circulating fluidized bed with draught tube”,Fuel,76, 1067-1073(1997).
48 Song,B.H.,Kim,Y.T.,Kim,S.D.,“Circulation of solids and gas bypassing in an internally circulating fluidized bed with a draft tube”, Chem.Eng.J.,68,115-122(1997).
49 Mleczko,L.,Marschall,K.J.,“Performance of an internally circulating fluidized-bed reactor for the catalytic oxidative coupling of methane”,Can.J.Chem.Eng,75,610-619(1997).
50 Mutsers,S.M.P.,Rietema,K.,“Gas-solids fluidization in a centrifugal field.The effect of gravity upon bed expansion”,Powder Technol.,18,249-256(1977).
51 Chen,Y.M.,“Fundamentals of a centrifugal fluidized bed”,AIChE J.,33,722-728(1987).
52 Kao,J.,Pfeffer,R.,Tardos,G.I.,“On partial fluidization in rotating fluidized beds”,AIChE J.,33,858-861(1987).
53 Levy,E.K.,Shakespeare,W.J.,Tabatabae-Raissi,A.,Chen,J.C., “Particle elutriation from centrifugal fluidized beds”,In:72nd Annual AIChE Meeting,San Francisco,CA(1979).
54 Saunders,J.H.,“Particle entrainment from rotating fluidized beds”, Powders Technol.,47,211-217(1986).
55 Qian,G.,Bagyi,I.,Burdick,I.W.,Pfeffer,R.,Shaw,H.,Stevens,J.G., “Gas-solid fluidization in a centrifugal field”,AIChE J.,47(5), 1022-1034(2001).
56 Watano,S.,Imada,Y.,Hamada,K.,Wakamatsu,Y.,Tanabe,Y.,Dave, R.N.,Pfeffer,R.,“Microgranulation of fine powders by a novel rotating fluidized bed granulator”,Powder Technol.,131,250-255 (2003).
57 Wong,W.Y.,Nasserzadeh,V.,Swithenbank,J.,“Experimental investigation into the incineration of sludges in a novel rotating fluidized bed”,J.Hazard.Mater.,73,143-160(2000).
58 Matsuda,S.,Hatano,H.,Kuramoto,K.,Tsutsumi,A.,“Fluidization of ultrafine particles with high G”,J.Chem.Eng.Jpn.,34,121-125 (2001).
59 Matsuda,S.,Hatano,H.,Muramoto,T.,Tsutsumi,A.,“Modeling for size reduction of agglomerates in nanoparticle fluidization”,AIChE J.,50,2763-2771(2004).
60 Quevedo,J.,Pfeffer,R.,Shen,Y.,Dave,R.,Nakamura,H.,Watano, S.,“Fluidization of nanoagglomerates in a rotating fluidized bed”, AIChE J.,52,2401-2412(2006).
61 Kuipers,N.J.M.,Stamhuis,E.J.,Beenackers,A.A.C.M.,“Fluidization of potato starch in a stirred vibrating fluidized bed”,Chem.Eng. Sci.,51,2727-2732(1996).
62 Suzuki,K.,Fujigami,A.,“Characteristics of vibro-fluidized bed for drying of wetted agglomerated particles”,J.Chem.Eng.Jpn.,13(6), 495-498(1980).
63 Nam,C.H.,Pfeffer,R.,Dave,R.N.,Sundaresan,S.,“Aerated vibrofluidization of silica nanoparticles”,AIChE J.,50,1776-1785 (2004).
64 Wang,Y.,Wang,T.J.,Yang,Y.,Jin,Y.,“Resonance characteristics of a vibrated fluidized bed with a high bed hold-up”,Powder Technol., 127,196-202(2002).
65 Morse,R.D.,“Sonic energy in granular solid fluidization”,Ind.Eng. Chem.,47,1170Å1175(1955).
66 Montz,K.W.,Beddow,J.K.,“Adhesion and removal of particulate contaminants in a high-decibel acoustic field”,Powder Technol.,55, 133-140(1988).
67 Chirone,R.,Massimilla,L.,Russo,S.,“Bubble-free fluidization of a cohesive powder in an acoustic field”,Chem.Eng.Sci.,48,41-52 (1993).
68 Chirone,R.,Massimilla,L.,“Sound-assisted aeration of beds of cohesive solids”,Chem.Eng.Sci.,49,1185-1194(1994).
69 Russo,P.,Chirone,R.,Massimilla,L.,Russo,S.,“The influence of the frequency of acoustic waves on sound-assisted fluidization of beds of fine particles”,Powder Technol.,82,219-230(1995).
70ÅXu,C.,Cheng,Y.,Zhu,J.,“Fluidization of fine particles in a sound field and identification of group C/A particles using acoustic waves”, Powder Technol.,161,227-234(2006).
71 Herrera,C.A.,Levy,E.K.,ochs,J.,“Characteristics of acoustic standing waves in fluidized beds”,AIChE J.,48,503-513(2002).
72 Zhu,C.,Liu,G.,Yu,Q.,Pfeffer,R.,Dave,R.N.,Nam,C.H.,“Sound assisted fluidization of nanoparticle agglomerates”,Powder Technol., 141,119-123(2004).
73 Levy,E.K.,Shnitzer,I.,Masaki,T.,Salmento,J.,“Effect of acoustic field on bubbling a gas fluidize bed”,Powder Technol.,90,53-57 (1997).
74 Herrera,C.A.,Levy,E.K.,“Bubbling characteristics of sound-assisted fluidized beds”,Powder Technol.,119,229-240(2001).
75 Agbim,J.A.,Nienow,A.W.,Rowe,P.N.,“Inter-particles forces that suppress bubbling in gas fluidized beds”,Chem.Eng.Sci.,26, 1293-1294(1971).
76 Ciborowski,J.,Wlodarski,A.,“On eletrostatic effects in fluidized beds”,Chem.Eng.Sci.,17,23-32(1962).
77 Wang,J.S.,Colver,G.M.,“Elutriation control and charge measurement of fines in a gas fluidized bed with AC and DC electric field”, Powder Technol.,135,169-180(2003).
78 Johnson,T.W.,Melcher,J.R.,“Electromechanics of electrofluidized beds”,Ind.Eng.Chem.Fund.,14,146-153(1975).
79 Colver,G.M.,“An inter-particles force model for AC-DC electric fields”,Powder Technol.,112,126-136(2000).
80 Kleijin van Willigen,F.,van Ommen,J.R.,van Turnhout,J.,van den Bleek,C.M.,“Bubble size reduction in electric-field-enhanced fluidized beds”,J.Electrostat.,63,943-948(2005).
81 Kleijin van Willigen,F.,van Ommen,J.R.,van Turnhout,J.,van den Bleek,C.M.,“Bubble size reduction in a fluidized bed by electric fields”,Int.J.Chem.React.Eng.,1,A21(2003).
82 Rosenweig,R.E.,“Fluidization:Hydrodynamic stabilization with a magnetic field”,Science,204,57-60(1979).
83 Rosensweig,R.E.,“Magnetic stabilization of the state of uniform fluidization”,Ind.Eng.Chem.Fundam.,18,260-2691(1979).
84 Steven,J.G.,Siegell,J.H.,Rosensweig,R.E.,Mikus,T.,Lee,W.K., “Magnetically stabilized fluidized beds with time-varying magnetic fields”,Powder Technol.,56,119-128(1988).
85 Penchev,I.P.,Hristov,J.Y.,“Behavior of fluidized beds of ferromagnetic particles in an axial magnetic field”,Powder Technol.,61, 103-118(1990).
86 Arnaldos,J.,Casal,J.,Lucas,A.,Puigjaner,L.,“Magnetically stabilized fluidization:Modeling and application to mixtures”,Powder Technol.,44,57-62(1985).
87 Liu,Y.A.,Hamby,R.K.,Colberg,R.D.,“Fundamental and practical developments of magnetofluidized bed:A review”,Powder Technol., 64,3-41(1991).
88 Wu,W.Y.,Navada,A.,Saxena,S.C.,“Hydrodynamics characteristics of a magnetically stabilized air fluidized bed of an admixture of magnetic and non-magnetic particles”,Powder Technol,90,39-46 (1997).
89 Wu,W.Y.,Smith,K.L.,Saxena,S.C.,“Rheology of a magnetically stabilized bed consisting of mixtures of magnetic and non-magnetic particles”,Powder Technol.,91,181-187(1997).
90 Zhu,Q.,Li,H.,“Study on magnetic fluidization of group C powders”,Powder Technol.,86,179-185(1996).
91 Lu,X.,Li,H.,“Fluidization of CaCO₃ and Fe₂O₃ particles mixtures in a transverse rotating magnetic field”,Powder Technol.,107, 66-78(2000).
92 Yu,Q.,Dave,R.,Zhu,C.,Quevedo,J.,Pfeffer,R.,“Enhanced fluidization of nanoparticles in an oscillating magnetic field”,AIChE J., 51,1971-1979(2005).
93 Jaraiz-M,E.,Levenspiel,O.,Fitzgerald,T.J.,“The uses of magnetic fields in the processing of solids”,Chem.Eng.Sci.,38,107-114 (1983).
94 Li,Y.,Zhao,C.,Wu,X.,Lu,D.,Han,S.,“Aggregation experiments on fine fly ash particles in uniform magnetic field”,Powder Technol., 174,93-103(2007).
95 Ivanov,D.G.,Shumkov,S.K.,“Investigation of the heterogeneity of a fluidized bed of catalyst for the syntheses of ammonia in an electromagnetic field”,Int.Chem.Eng.,15,557-560(1975).
96 Zrunchev,I.A.,Popova,T.F.,“Ammonia synthesis in a magnetically fluidized powdery catalyst bed under a low pressure”,Powder Technol.,64,175-181(1991).
97 Wank,J.R.,George,S.M.,Weimer,A.W.,“Vibro-fluidization of fine boron nitride powder at low pressure”,Powder Technol.,121, 195-204(2001).
98 Noda,K.,Mawatari,Y.,Uchida,S.,“Flow patterns of fine particles in a vibrated fluidized bed under atmospheric or reduced pressure”, Powder Technol.,99,11-14(1998).
99 Quintanilla,M.A.S.,Valverde,J.M.,Castellanos,A.,Lepek,D., Pfeffer,R.,Dave,R.N.,“Nanofluidization as affected by vibration and electrostatic field”,Chem.Eng.Sci.,63,5559-5569(2008)
100 Wang,X.S.,Rhodes,M.J.,“Pulsed fluidization—A DEM study of a fascinating phenomenon”,Powder Technol.,19,142-149(2005).
101 Wang,X.S.,Rhodes,M.J.,“Using pulsed flow to overcome defluidization”,Chem.Eng.Sci.,60,5177-5181(2005).
102 Gui,N.,Fan,J.,“Numerical simulation of pulsed fluidized bed withimmersed tubes using DEM-LES coupling method”,Chem.Eng.Sci., 64,2590-2598(2008).
103 Zhang,W.,“A numerical study of solid suspension layers in a swirl fluidized bed reactor”,Int.J.Chem.React.Eng.,7,A15(2009).
104 Rong,D.,Mikami,T.,Horio,M.,“Particles and bubble movements around tubes immersed in fluidized beds-a numerical study”,Chem. Eng.Sci.,54,5737-5754(1999).
105 Rong,D.,Horio,M.,“Behavior of particles and bubbles around immersed tubes in a fluidized bed at high temperature and pressure:A DEM simulation”,Int.J.Multiphase Flow,27,89-105(2001).
106 Gui,N.,Fan,J.,Luo,K.,“DEM-LES study of 3-D bubbling fluidized bed with immersed tubes”,Chem.Eng.Sci.,63,3654-3663 (2008).
107 Marschall,K.J.,Meleczko,L.,“CFD modeling of an internally circulating fluidized bed reactor”,Chem.Eng.Sci.,54,2085-2093 (1999).
108 Tatemoto,Y.,Niwa,Y.,Takeshita,T.,“Circulation of particles in a vibrated bed with an inner tube”,Powder Technol.,192,279-286 (2009).
109 Zhu,C.,Lin,C.H.,Lin,G.H.,Qian,G.H.,Pfeffer,P.,“Modeling of the pressure drop and flow field in a rotating fluidized bed”,Chem. Eng.Comm.,190,1132-1154(2003).
110 Ahmadzadeh,A.,Arastoopour,H.,“Three-dimensional numerical simulation of a horizontal rotating fluidized bed”,Powder Technol., 183,410-416(2008).
111 Nakamura,H.,Watano,S.,“Numerical modeling of particles fluidization behavior in a rotating fluidized bed”,Powder Technol.,171, 106-117(2007).
112 Nakamura,H.,Tokuda,T.,Iwasaki,T.,Watano,S.,“Numerical analysis of particle mixing in a rotating fluidized bed”,Chem.Eng. Sci.,62,3043-3056(2007).
113 Limtrakul,S.,Rotjanavijit,W.,Vatanatham,T.,“Lagrangian modeling and simulation of effect of vibration on cohesive particle movement in a fluidized bed”,Chem.Eng.Sci.,62,232-245(2007).
114 Tatemoto,Y.,Mawatari,Y.,Yasukawa,T.,Noda,K.,“Numerical simulation of particle motion in vibrated fluidized bed”,Chem.Eng. Sci.,59,437-447(2004).
115 Kleijn van Willigen,F.,Demirbas,B.,Deen,N.G.,Kuipers,J.A.M., van Ommen,J.R.,“Discrete particle simulations of an electric-field enhanced fluidized bed”,Powder Technol.,183,196-206(2008).

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