| Issue |
Korean Journal of Chemical Engineering,
Vol.27, No.4, 1328-1332, 2010
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]
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.