重质颗粒流态化研究现状与展望  

Current status and prospects of research on fluidization characteristics of high-density particles

作　　者：李舒月 王欢[1,2] 周少强 毛志宏 张永民 王军武[1] 吴秀花 LI Shuyue;WANG Huan;ZHOU Shaoqiang;MAO Zhihong;ZHANG Yongmin;WANG Junwu;WU Xiuhua(State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China;CNNC No.7 Research and Design Institute Co.,Ltd.,Taiyuan 030012,Shanxi,China)

机构地区：[1]中国石油大学(北京)重质油全国重点实验室,北京102249 [2]中核第七研究设计院有限公司,山西太原030012

出　　处：《化工学报》2025年第2期466-483,共18页CIESC Journal

基　　金：国家自然科学基金项目(22308377);中国石油大学(北京)拔尖人才启动基金项目(2462023BJRC004);中核集团青年英才项目(KY202212);中核铀纯化转化工程技术研究中心开放基金项目(ZHQY.1.KY202310.JS.001)。

摘　　要：流化床技术在工业中应用广泛,其中天然铀转化、直接还原炼铁、化学链燃烧等工业过程中使用的是颗粒密度在4.0 g/cm^(3)以上的重质颗粒,而传统化工、能源行业广泛使用的则是密度较小的轻质流化床颗粒。综述了重质颗粒流态化技术在工业中的应用情况,梳理了目前重质颗粒流态化基础的研究进展。已有的实验测量和数值模拟研究均表明重质颗粒的流态化行为与低密度颗粒存在显著差异,且针对低密度颗粒的一些研究规律并不能完全适用于重质颗粒流化床。当前,对重质颗粒的流态化基础研究尚不充分,特别是在流域转变、传热传质特性、颗粒混合分级特性、反应过程强化技术等研究方面,与传统低密度颗粒流态化的基础研究相比,存在巨大的基础研究空白。最后结合相关工业过程的需要,重点讨论了近期应重点补充的重质颗粒流态化基础研究的内容。Fluidized bed technology is widely used in industry.Industrial processes such as natural uranium conversion,direct reduction ironmaking,and chemical chain combustion use heavy particles with a particle density of more than 4.0 g/cm^(3).However,in traditional chemical and energy industries,lightweight fluidized bed particles with smaller density are widely used.This article reviews the application background of high-density particle fluidization technology in some industries,which particle densities are beyond 4.0 g/cm^(3),and explores the impact of high-density particle fluidization quality on system performance.Subsequently,the article reviews the research progress in high-density particle fluidization,highlighting that both experimental measurements and numerical simulations indicate significant differences in the fluidization behavior between high-density and low-density particles.However,existing studies on the fluidization characteristics of high-density particles remain insufficient,particularly regarding the flow characteristics and differences compared to low-density particles.Finally,combined with the needs of related industrial processes,this article focuses on the basic research content of heavy particle fluidization that should be supplemented in the near future.

关 键 词：流化床 天然铀转化 核化工 重质颗粒 流态化 数值模拟 

分 类 号：TQ051.1[化学工程] TQ031