高钛渣沸腾氯化速度的数值模拟  

Numerical simulation of fluidized chlorination velocity of high titanium slag

作　　者：曹丽 朱奎松 谢聪 王军 赵英涛 孙常清 程相利 Cao Li;Zhu Kuisong;Xie Cong;Wang Jun;Zhao Yingtao;Sun Changqing;Cheng Xiangli(Vanadium and Titanium Resource Comprehensive Utilization Key Laboratory of Sichuan Province,Panzhihua 617000,Sichuan,China;College of Vanadium and Titanium,Panzhihua University,Panzhihua 617000,Sichuan,China)

机构地区：[1]钒钛资源综合利用四川省重点实验室,四川攀枝花617000 [2]攀枝花学院钒钛学院,四川攀枝花617000

出　　处：《钢铁钒钛》2024年第5期26-34,共9页Iron Steel Vanadium Titanium

基　　金：四川省应用基础研究项目(2021YJ0548);四川省钒钛材料工程技术研究中心开放课题(2023FTGC09);绿色催化四川省高校重点实验室开放基金(LZJ2304)。

摘　　要：基于高钛渣和氯气物性参数,采用经典初始流化速度公式计算了高钛渣沸腾氯化的初始流化速度,并结合欧拉双流体模型建立了高钛渣沸腾氯化气固两相流的数学模型并开展数值计算,最后以数值模拟结果为依据对高钛渣沸腾氯化表观操作气速进行了预测。研究结果表明:以欧拉双流体模型结合Grace公式得到初始流化速度能够准确模拟出高钛渣氯化过程的气固两相流特征;依据沸腾氯化床层中高钛渣颗粒体积分数、床层截面速度和压力分布规律,确定高钛渣沸腾氯化的最佳表观操作气速为Grace计算公式得到的初始流化速度值的1.5倍。Based on the physical parameters of high titanium slag and chlorine gas,the initial fluidization velocity of fluidized chlorination of high titanium slag was calculated by using the classical initial fluidization velocity formula.And the mathematical model of gas-solid two-phase flow of fluidized chlorination of high titanium slag was established by combining Euler two-fluid model.Finally,based on the numerical simulation results,the superficial gas velocity of fluidized chlorination of high titanium slag was predicted.The results show that the initial fluidization velocity obtained by Euler two-fluid model combined with Grace formula can accurately simulate the gas-solid two-phase flow characteristics of high titanium slag chlorination process.According to the volume fraction of high titanium slag particles in the fluidized chlorination bed,the velocity and pressure distribution of the cross section of the bed,the optimal superficial gas velocity for the fluidized chlorination of high titanium slag was determined to be 1.5 times the initial fluidization velocity obtained by Grace’s calculation formula.

关 键 词：高钛渣 沸腾氯化 数值模拟 表观操作气速 气固两相流 

分 类 号：TF823[冶金工程—有色金属冶金] TP391.9[自动化与计算机技术—计算机应用技术]