以非晶态合金催化剂SRNA-4为固相的气液固磁稳定床的界面传质研究

• TRANSPORT PHENOMENA & FLUID MECHANICS • 上一篇下一篇

以非晶态合金催化剂SRNA-4为固相的气液固磁稳定床的界面传质研究

李韡^a; 宗保宁^b; 李晓芳^a; 孟祥坤^b; 张金利^a

^a School of Chemical Engineering, Tianjin University, Tianjin 300072, China
^b Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-12-28 发布日期:2006-12-28
通讯作者: 李韡

Interphase mass transfer in G-L-S magnetically stabilized bed with amorphous alloy SRNA-4 catalyst

LI Wei^a; ZONG Baoning^b; LI Xiaofang^a; MENG Xiangkun^b; ZHANG Jinli^a

^a School of Chemical Engineering, Tianjin University, Tianjin 300072, China
^b Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China

Received:1900-01-01 Revised:1900-01-01 Online:2006-12-28 Published:2006-12-28
Contact: LI Wei

摘要/Abstract

摘要： Gas-liquid (G-L) and liquid-solid (L-S) mass transfer coefficients were characterized in a gas-liquid-solid (G-L-S) three-phase magnetically stabilized bed (MSB) using amorphous alloy SRNA-4 as the solid phase. Effects such as superficial liquid velocity, superficial gas velocity, magnetic strength, liquid viscosity, and particle size were investigated. Experimental results indicated that the G-L volumetric mass transfer coefficients (KLa) increased along with the magnetic strength, superficial gas and liquid velocities. Proper increase of liquid viscosity promoted KLa only in the range of lower liquid viscosity. The external magnetic field made L-S mass transfer coefficients (Ks) in the G-L-S MSB lower than those of conventional fluidized beds. Ks in the MSB almost kept constant as the su-perficial liquid velocity and superficial gas velocity increased and decreased with the liquid viscosity and surface tension, while increased with the particle size Ks showed uniform axial and radial distributions except of small de-creases close to the wall. Dimensionless correlations were established to estimate KLa and Ks of the MSB with SRNA-4 catalysts , which showed the average error of 5.4% and 2.5% respectively.

关键词: magnetically stabilized bed;gas-liquid mass transfer;liquid-solid mass transfer;SRNA-4 catalyst

Abstract: Gas-liquid (G-L) and liquid-solid (L-S) mass transfer coefficients were characterized in a gas-liquid-solid (G-L-S) three-phase magnetically stabilized bed (MSB) using amorphous alloy SRNA-4 as the solid phase. Effects such as superficial liquid velocity, superficial gas velocity, magnetic strength, liquid viscosity, and particle size were investigated. Experimental results indicated that the G-L volumetric mass transfer coefficients (KLa) increased along with the magnetic strength, superficial gas and liquid velocities. Proper increase of liquid viscosity promoted KLa only in the range of lower liquid viscosity. The external magnetic field made L-S mass transfer coefficients (Ks) in the G-L-S MSB lower than those of conventional fluidized beds. Ks in the MSB almost kept constant as the su-perficial liquid velocity and superficial gas velocity increased and decreased with the liquid viscosity and surface tension, while increased with the particle size Ks showed uniform axial and radial distributions except of small de-creases close to the wall. Dimensionless correlations were established to estimate KLa and Ks of the MSB with SRNA-4 catalysts , which showed the average error of 5.4% and 2.5% respectively.

Key words: magnetically stabilized bed, gas-liquid mass transfer, liquid-solid mass transfer, SRNA-4 catalyst

李韡, 宗保宁, 李晓芳, 孟祥坤, 张金利. 以非晶态合金催化剂SRNA-4为固相的气液固磁稳定床的界面传质研究[J]. , DOI: .

LI ,Wei, ,ZONG ,Baoning, ,LI ,Xiaofang, MENG ,Xiangkun, ZHANG ,Jinli. Interphase mass transfer in G-L-S magnetically stabilized bed with amorphous alloy SRNA-4 catalyst[J]. , DOI: .

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