新型管式搅拌反应器的气液传质特性  

Gas-liquid mass transfer characteristics of a new tubular stirred reactor

作　　者：李天赐 赵秋月 朱帅[1,2] 郑明昭 张廷安 LI Tianci;ZHAO Qiuyue;ZHU Shuai;ZHENG Mingzhao;ZHANG Tingan(School of Metallurgy,Northeastern University,Shenyang 110819,China;Key Laboratory of Ecological Metallurgy of Polymetallic Symbiotic Ores of Ministry of Education,Shenyang 110819,China;Chinalco Southeast Materials Institute(Fujian)Technology Co.,Ltd.,Fuzhou 350015,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]多金属共生矿生态化冶金教育部重点实验室,辽宁沈阳110819 [3]中铝东南材料院(福建)科技有限公司,福建福州350015

出　　处：《中国有色冶金》2024年第1期105-111,共7页China Nonferrous Metallurgy

基　　金：国家自然科学基金项目“低阶煤多相解离与界面重构资源化利用基础研究”(U21A20321)。

摘　　要：多相体系的混合与传质性能直接影响多相反应过程,团队开发了从搅拌桨叶端出气的新型管式搅拌反应器。采用稳态亚硫酸盐法(FSM)研究反应器的气液传质性能,考察了通气流量Q、搅拌弗劳德数Fr和液含量ε对体积传质系数k_(L)a的影响。结果表明:增大Q和Fr可以有效提高k_(L)a;新型搅拌桨从桨叶端进气方式可以增强k_(L)a,相较传统反应器最大增强约2倍。反应器的气液传质性能在ε=0.5、Fr=0.054、Q=1.6 m^(3)·h^(-1)时最高,此时k_(L)a=0.032 4 s^(-1)。依据试验数据建立了关于k_(L)a的无量纲关联式,误差基本在25%以内,对后续反应器的改进和应用具有参考意义。The mixing and mass transfer performance of the multiphase system directly affects the multiphase reaction process. The team developed a new type of tubular stirred reactor that discharges gas from the impeller end. The steady-state sulfite method(FSM) was used to study the gas-liquid mass transfer performance of the reactor. The effects of ventilation flow rate Q, stirring Froude number Fr and liquid content on the volumetric mass transfer coefficient k_(L)a were investigated. The results show that increasing Q and Fr can effectively improve k_(L)a. The new inlet mode can enhance k_(L)a, which is about 2 times higher than that of the traditional reactor. The gas-liquid mass transfer performance of the reactor is highest at ε=0.5, Fr=0.054, Q=1.6 m^(3)·h^(-1), with k_(L)a=0.032 4 s^(-1). Based on the experimental data, a dimensionless correlation for k_(L)a was established, and the error was basically within 25%, which has reference significance for improvement and application of the subsequent reactor.

关 键 词：多相反应器 曝气 弗劳德数 气液系统 气液传质 冶金设备 

分 类 号：TF351[冶金工程—冶金机械及自动化]