吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (4): 1375-1380.doi: 10.13229/j.cnki.jdxbgxb201504050

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Effect of operation pressure on superheated steam fluidized bed drying

XIAO Zhi-feng1, LE Jian-bo1, WU Nan-xing1, LIU Xiang-dong2   

  1. 1.School of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China;
    2.College of Engineering, China Agricultural University, Beijing 100083, China
  • Received:2013-11-07 Online:2015-07-01 Published:2015-07-01

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Abstract: In superheated steam fluidized bed drying, the operation pressure significantly influences the heat and mass transfer and the steam-particle two-phase flow with nonlinear characteristics. Base on the two-dimensional unsteady model of drying process of rapeseeds, numerical simulation was carried out to investigate the influence of operation pressure on the kinetics of superheated steam fluidized bed drying. Under negative pressure, near atmospheric pressure and high pressure, the relationship between the operation pressure and maximum drying rate was quantitatively analyzed respectively. For superheated steam fluidized bed drying of granular products with the inlet steam temperature and flow rate, the values of the optimal operation pressure were obtained. Simulation results show that, with inlet steam temperature of 358 K, flow velocity of 2.5 m/s and particle diameter of 1.0 mm, the optimal pressure is 0.02 MPa; with inlet steam temperature of 403 K, flow velocity of 2.5 m/s and particle diameter of 1.0 mm, the optimal pressure is 0.1 MPa; with inlet steam temperature of 443 K, flow velocity of 2.0 m/s and particle diameter of 2.0 mm, the optimal pressure is 0.2 MPa.

Key words: agricultural engineering, optimum operating pressure, superheated steam fluidized bed drying, numerical simulation

CLC Number: 

  • S226.6
[1] 潘永康, 王喜忠, 刘相东. 现代干燥技术[M]. 2版.北京: 化学工业出版社, 2007.
[2] Kudra T, Mujumdar A S. Advanced Drying Technologies[M]. New York:Marcel Dekker Inc, 2002.
[3] Mujumdar A S. Superheated Steam Drying. Handbook of Industrial Drying[M].New York:Hemisphere Publishing Corporation, 1995.
[4] Picado A, Martínez J. Mathematical modeling of a continuous vibrating fluidized bed dryer for grain[J]. Drying Technology, 2012, 30(13): 1469-1481.
[5] 肖志锋. 过热蒸汽流化床干燥过程数值模拟及试验[D]. 北京: 中国农业大学, 2008. Xiao Zhi-feng. Numerical simulation and experimental study on fluidized bed drying process with superheated Steam[D]. Beijing: China Agricultural University, 2008.
[6] 宫英振, 牛海霞, 肖志锋, 等. 油菜籽过热蒸汽流化床常压干燥过程的数学模拟[J]. 农业工程学报, 2010, 26(4): 351-356. Gong Ying-zhen, Niu Hai-xia, Xiao Zhi-feng, et al. Simulation on rapeseed drying in superheated steam fluidized bed at atmosphere pressure[J]. Transactions of the CSAE, 2010, 26(4): 351-356.
[7] Shi Y C, Xiao Z F, Huang X L, et al. Numerical simulation on superheated steam fluidized bed drying: II. experiments and numerical simulation[J]. Drying Technology, 2011, 29(11): 1332-1342.
[8] Tatemoto Y, Yanoa S, Mawatarib Y, et al. Drying characteristics of porous material immersed in a bed of glass beads fuidized by superheated steam under reduced pressure[J]. Chemical Engineering Science, 2007, 62(1-2): 471-480.
[9] Elustondo D M, Mujumdar A S. Optimum operating conditions in drying foodstuffs with superheated steam[J]. Drying Technology, 2002, 20(2): 381-402.
[10] Urbicain M. Drying with superheated steam: maximum drying rate as a linear function of pressure[J]. Chemical Engineering Journal, 2002, 86: 69-74.
[11] Yang D Y, Wang Z H, Huang X L, et al. Numerical simulation on superheated steam fluidized bed drying: i. model construction[J]. Drying Technology,2011, 29(11): 1325-1331.
[12] Xiao Z F, Yang D Y, Yuan Y J, et al. Fractal pore network simulation on the drying process of porous media[J]. Drying Technology, 2008(6): 651-665.
[13] Gidaspow D, Bezburuah R, Ding J. Hydrodynamics of circulating fluidized beds, kinetic theory approach[C]∥Proceedings of the 7th Engineering Foundation Conference on Fluidization, Brisbane, Australia, 1992.
[14] 周力行. 湍流气粒两相流动和燃烧的理论与数值模拟[M]. 北京: 科学出版社, 1994.
[15] Sakamoto K, Katsuoka T. Model of through-flow drying for beds packed with tobacco cut-filler in a flow of air or superheated steam[J]. Food Science and Technology Research, 2012, 18(5): 623-629.
[16] 斯米特·E, 格里古尔·U. 国际单位制的水和水蒸汽性质[M]. 赵兆颐译. 北京: 水利电力出版社, 1983.
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