| L-S mass transfer in G-L-S countercurrent magnetically stabilized bed with amorphous alloy SRNA-4 catalyst |
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| 作者姓名： | Wei Li Baoning Zong Xiaofang Li Xiangkun Meng Jinli Zhang |
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| 作者单位： | [1]School of Chemical Engineering, Tianjin University, Tianjin 300072, China [2]Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划);中国石油化工总公司资助项目 |
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| 摘 要： | Liquid-solid （L-S） mass transfer coefficients （Ks） were characterized in a gas-liquid-solid （G-L-S） three-phase countercurrent magnetically stabilized bed （MSB） using amorphous alloy SRNA-4 as the solid phase. Effects of superficial liquid velocity, superficial gas velocity, magnetic field strength, liquid viscosity and surface tension were investigated. Experimental results indicated that the external magnetic field increased Ks in three-phase MSB, as compared to those in conventional G-L-S fluidized beds; that Ks increased with magnetic field strength, superficial gas and liquid velocities and decreased with liquid viscosity and surface tension; and that Ks showed uniform axial and radial distributions except for small increases close to the wall. Dimensionless correlations were established to estimate Ks of the G-L-S countercurrent MSB using SRNA-4 catalyst, with an average error of 3.6%.
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| 关 键 词： | 磁力稳定床 对流 液体-固体传质 非晶态合金 SRNA-4催化剂 |
| 修稿时间： | 2006-11-072007-01-21 |
L-S mass transfer in G-L-S countercurrent magnetically stabilized bed with amorphous alloy SRNA-4 catalyst |
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| Wei Li Baoning Zong Xiaofang Li Xiangkun Meng Jinli Zhang.L-S mass transfer in G-L-S countercurrent magnetically stabilized bed with amorphous alloy SRNA-4 catalyst[J].China Particuology,2007,5(1):116-120. |
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| Authors: | Wei Li Baoning Zong Xiaofang Li Xiangkun Meng Jinli Zhang |
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| Abstract: | Liquid-solid (L-S) mass transfer coefficients (Ks) were characterized in a gas-liquid-solid (G-L-S) three-phase countercurrent magnetically stabilized bed (MSB) using amorphous alloy SRNA-4 as the solid phase. Effects of superficial liquid velocity, superficial gas velocity, magnetic field strength, liquid viscosity and surface tension were investigated. Experimental results indicated that the external magnetic field increased Ks in three-phase MSB, as compared to those in conventional G-L-S fluidized beds; that Ks increased with magnetic field strength, superficial gas and liquid velocities and decreased with liquid viscosity and surface tension; and that Ks showed uniform axial and radial distributions except for small increases close to the wall. Dimensionless correlations were established to estimate Ks of the G-L-S countercurrent MSB using SRNA-4catalyst, with an average error of 3.6%. |
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| Keywords: | Magnetically stabilized bed Countercurrent Liquid-solid mass transfer SRNA-4 catalyst |
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