Korean Journal of Chemical Engineering, Vol.27, No.4, 1328-1332, 2010
Hydrodynamic characteristics of cold-bed circulating fluidized beds for the methanol to olefins process
The effects of the riser inlet velocity (2.2-3.9 m/s), seal-pot inlet velocity (2.4-7.1 Umf), aeration flow rate (2.5×10^(-7)-3.7×10^(-6) m3/s) in seal-pot, and solid inventory (0.15-0.2 kg) on the hydrodynamic characteristics of a 9 mm-ID×1.9 m-high cold-bed circulating fluidized bed for methanol to olefins (MTO) process were investigated. FCC (Engelhard; 82.4 μm) particles were used as bed particles. Most of the experimental flow regimes were observed in fast fluidization
and pneumatic transport regimes. The axial solid holdup in a riser increased with increasing solid mass flux and solid inventory. Solid mass flux increased proportionally until reaching a maximum value and then decreased with increasing seal-pot inlet velocity. The obtained hydrodynamic characteristics in the cold-bed circulating fluidized beds were compared with previous results.
[References]
Chen JQ, Bozzano A, Glover B, Fuglerud T, Kvisle S, Catal. Today , 106 (1-4), 103, 2005
Das M, Adhyay AB, Meikap BC, Saha RK, Chem. Eng. J. , 145 (2), 249, 2008
Gupta SK, Berruti F, Powder Technol. , 108 (1), 21, 2000
Bai D, Kato K, Powder Technol. , 101 (3), 183, 1999
Kwauk M, Fast Fluidization. Vol. 20, Advances in Chemical Engineering Series, San Diego, Academic Press, 1994
Grace JR, Avidan AA, Knowlton TM, Circulating fluidized beds. , London, Chapman and Hall, 1997
Berruti F, Chaouki J, Godfroy L, Pugsley TS, Patience GS, Can. J. Chem. Eng. , 73 , 569, 1995
Yerushalmi J, Cankurt NT, Powder Technol. , 24 , 187, 1979
Arena U, Cammarota A, Pistone L, in Circulating fluidized bed technology, P. Basu, Ed., Toronto, Pergamon Press, 119, 1986
Hartge EU, Li Y, Werther J, in Circulating fluidized bed technology, P. Basu, Ed., Toronto, Pergamon Press, 153, 1986
Azzi M, Turlier P, Large JF, in Circulating fluidized bed technology III, Basu P, Horio M, Hasatani M, Ed., Oxford, Pergamon Press, 189, 1991
Grassler T, Wirth KE, in Circulating fluidized bed technology VI, Werther J, Ed., Frankfurt, DECHEMA, 65, 1999
Froment GF, Bischoff KB, Chemical reactor analysis and design, , 2nd Ed., John Wiley, New York, 1990
Bos AN, Tromp PJ, Akse HN, Ind. Eng. Chem. Res. , 34 (11), 3808, 1995
Soundararajan S,Dalai AK, Berruti F, Fuel. , 80 , 1187, 2001
Wahabi SM, Conversion of methanol to light olefins on SAPO-34 kinetic modeling and reactor design. , Ph.D. Dissertation, Texas A&M, USA, 2003
Yousfi Y, Gau G, Chem. Eng. Sci. , 29 , 1939, 1974
Biswas J, Leung LE, Powder Technol. , 51 , 179, 1987
Namkung W, Kim SW, Kim SD, Chem. Eng. J. , 72 (3), 245, 1999
Kim SW, Solids recycle and heat transfer characteristics in a pressurized circulating fluidized bed system. , Ph.D. Thesis, KAIST, Daejeon, Korea, 2002
Brereton CMH, Fluid mechanics of high velocity fluidized beds. , Ph.D. Dissertation, University of British Columbia, Vancouver, Canada, 1987
Grace JR, Bi H, Golriz M, in Handbook of fluidization and fluid-particle systems, Yang WC Ed., New York, Marcel Dekker Inc.
Kim SW, Kim SD, Lee DH, Ind. Eng. Chem. Res. , 41 (20), 4949, 2002
Cho YJ, Hydrodynamics and heat transfer characteristics in a circulating fluidized bed. , Ph.D. Thesis, KAIST, Daejeon, Korea, 1994
Kim SW, Namkung W, Kim SD, Chem. Eng. Technol. , 24 (8), 843, 2001
[Cited By]
Kim SJ, Jang HG, Seo G, Korean Chemical Engineering Research , 51 (2), 181, 2013
Lee SU, Lee YJ, Kim JR, Jeong KE, Jeong SY, Journal of Industrial and Engineering Chemistry , 79 , 443, 2019
이전 논문 다음 논문
Result Search