Heat Transfer and Hydrodynamic Investigations of a Baffled Slurry Bubble Column

作     者：S. C. Saxena Z. D. Chen 

作者机构：Department of Chemical Engineering The University of Illinois at Chicago Box 4348 Chicago IL 60680 U.S.A. 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：1992年第1卷第3期

页      面：178-183页

核心收录：

学科分类：080701[工学-工程热物理] 080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

主　　题：heat transfer coefficient gas-phase holdup slurry bubble column. 

摘      要：Heat transfer and hydrodynamic investigations have been conducted in a 0.108 m internal diameter bubble column at ambient conditions. The column is equipped with seven 19mm diameter tubes arranged in an equilateral triangular pitch of 36.5 mm. A Monsanto synthetic heat transfer fluid, Therminol-66 having a viscosity of 39.8 cP at 303 K, is used as a liquid medium. Magnetite powders, average diameters 27.7 and 36.6 μm, in five concentrations up to 50 weight percent in the slurry, are used. As a gas phase, industrial grade nitrogen of purity 99.6 percent is employed. Gas holdup in different operating modes and regimes have been measured for the two- and three-phase systems over a superficial gas velocity range up to 0.20 m/s in the semi-batch mode. Heat transfer coefficients are measured at different tube locations in the bundle at different radial and vertical locations over a range of operating conditions. All these data are compared with the existing literature correlations and models. New correlations are proposed.