Heat Transfer in a Liquid-Solid Circulating Fluidized Bed Reactor with Low Surface Tension Media

作     者：H.R.Jin H.Lim D.H.Lim Y.Kang Ki-Won Jun 

作者机构：Chemical Engineering Chungnam National University Daejeon Korea Korea Chemical Technology Division Korea Research Institute of Chemical Technology 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2013年第21卷第8期

页      面：844-849页

核心收录：

学科分类：0710[理学-生物学] 080706[工学-化工过程机械] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070304[理学-物理化学(含∶化学物理)] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：Supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) GTL Technology Development Consortium (Korean National Oil Corp., Korea Gas Corp., Daelim Industrial Co. and Hyundai Engineering Co.) under "Energy Efficiency & Resources Programs" of the Ministry of Knowledge Economy, Republic of Korea 

主　　题：heat transfer coefficient liquid-solid circulating fluidized bed liquid surface tension solid circulation rate particle size 

摘      要：Heat transfer characteristics between the immersed heater and the bed content were studied in the riser of a liquid-solid circulating fluidized bed, whose diameter and height were 0.102 m (ID) and 2.5 m, respectively. Effects of liquid velocity, particle size, surface tension of liquid phase and solid circulation rate on the overall heat transfer coefficient were examined. The heat transfer coefficient increased with increasing particle size or solid circulation rate due to the higher potential of particles to contact with the heater surface and promote turbulence near the heater surface. The value of heat transfer coefficient increased gradually with increase in the surface tension of liquid phase, due to the slight increase of solid holdup. The heat transfer coefficient increased with the liquid velocity even in the higher range, due to the solid circulation prevented the decrease in solid holdup, in contrast to that in the conventional liquid-solid fluidized beds. The values of heat transfer coefficient were well correlated in terms of dimensionless groups as well as operating variables.