YAO Xiuying¹，XU Bo^1,2，LIU Mengxi¹，LU Chunxi¹

(1.State Key Laboratory of Heavy Oil Processing, China University of Petroleum(Beijing), Beijing 102249，China;2.Dongfang Boiler Group Co., Ltd., Zigong 643001，China)

Abstract: In order to investigate the effect of heat pipes on gas-solid flow state in the fluidized bed heat exchanger with heat pipes, the Euler two-fluid model with the energy minimization multi-scale(EMMS)drag force model was employed to investigate turbulent fluidized bed with tilted heat pipes, which could realize the efficient heat transfer between two catalysts with similar physical properties by heat pipes.The results show that the validity of the model is verified by comparing with experimental data.Compared with the effect of heat pipe on the axial distribution of solids holdup, it is found that the heat pipe can reduce the bubble size and the particle entrained amount.The influence of heat pipe on solids holdup is mainly located at the end of heat pipe in the radial direction and in the axial direction where the heat pipe is located.And the solids holdup decreases gradually as the radial position is close to the baffle.The size of main heat transfer zone decreases with the increasing of axial height and increases with the increasing of superficial gas velocity.

Keywords: inclined heat pipe; turbulent fluidized bed; pipe surface; solids holdup

中图分类号：TE624                              文献标志码：A

文章编号：1008-5548(2022)01-0001-14

DOI:10.13732/j.issn.1008-5548.2022.01.001

收稿日期： 2021-07-30，修回日期：2021-08-26，在线出版时间：2021-11-09。

基金项目：国家自然科学基金项目，编号：21706280; U1862202; 91834303; 21961132026。

第一作者简介：姚秀颖(1985—)，女，讲师，博士，研究方向为多相流传递与反应。E-mail：xyyao2014@126.com。

通信作者简介：卢春喜(1962—)，男，教授，博士，博士生导师，研究方向为石油化工装备。E-mail：lcx725@sina.com。