CO_(2)/O_(2)气氛下旋风筒气固分离与换热的数值模拟  

Numerical simulation of gas-solid separation and heat transfer in cyclone under CO_(2)/O_(2)atmosphere

作　　者：王艺 梅书霞[1] 何峰 谢峻林 张超[3] 邓玉华[3] 刘长江 WANG Yi;MEI Shuxia;HE Feng;XIE Junlin;ZHANG Chao;DENG Yuhua;LIU Changjiang(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,Hubei Province,China;Department of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China;Sinoma Construction Co.,Ltd.,Beijing 100176,China;Guangxi FTZ See Torch Science and Technology Co.,Ltd.,Qinzhou 535000,Guangxi,China)

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070 [2]北京工业大学材料与制造学部,北京100124 [3]中材建设有限公司,北京100176 [4]广西自贸区见炬科技有限公司,广西钦州535000

出　　处：《化学工程》2025年第2期44-50,共7页Chemical Engineering(China)

摘　　要：基于干法水泥生产系统的富氧燃烧结合CO_(2)回掺工艺,对N_(2)/O_(2)和CO_(2)/O_(2)2种气氛下C1旋风预热器中的流场分别进行数值模拟研究,对比气流场分布情况、气固分离效率和气固换热效果。研究表明:2种工况下气流场基本一致,但CO_(2)/O_(2)气氛下流场中的整体速度更高,阻力损失也更大;N_(2)/O_(2)和CO_(2)/O_(2)工况下气固分离效率几乎不变,分别为93.45%和93.67%;CO_(2)/O_(2)工况下气固换热效果低于N_(2)/O_(2)工况,气固温差由58 K增至69 K。Based on oxygen-enriched combustion in dry cement production system combined with CO_(2)back mixing process,the flow field in C1 cyclone preheater under N_(2)/O_(2)and CO_(2)/O_(2)atmospheres was numerically simulated,and the distribution of flow field,gas-solid separation efficiency and gas-solid heat transfer effect were compared.The results show that the flow field under the two working conditions is basically the same,but the overall velocity and resistance loss in CO_(2)/O_(2)atmosphere are higher.Under N_(2)/O_(2)and CO_(2)/O_(2)conditions,the gas-solid separation efficiency is almost unchanged,which is 93.45%and 93.67%,respectively.The heat transfer effect under CO_(2)/O_(2)condition is lower than that under N_(2)/O_(2)condition,and the gas-solid temperature difference increases from 58 K to 69 K.

关 键 词：旋风预热器 数值模拟 CO_(2)/O_(2)气氛 气固分离 气固换热 

分 类 号：TQ172.6[化学工程—水泥工业]