[an error occurred while processing this directive]
 
化学反应工程与工艺
研究论文 最新目录| 下期目录| 过刊浏览| 高级检索 |
鼓泡流化床内高钛渣氯化过程模拟
 邹汪阳1,顾素敏2,陈恒志1
1.重庆大学化学化工学院,重庆 400044
2.中科院山西煤炭化学研究所煤高效低碳利用全国重点实验室,山西 太原 030001
Simulation of Chlorination of High-Titanium Slag in a Bubbling Fluidized Bed
ZOU Wangyang1, GU Sumin2, CHEN Hengzhi1
1. College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;
2. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Science, Taiyuan 030001, China
全文: PDF (0 KB)   HTML (1 KB) 
输出: BibTeX | EndNote (RIS)      背景资料
文章导读  
摘要 本研究建立了高钛渣氯化反应的未反应缩核动力学模型(SCM),并在小型鼓泡流化床中获得了动力学参数。将SCM与双流体模型(TFM)耦合建立了TFM-SCM模型,模拟研究了鼓泡流化床中的高钛渣氯化反应过程,模型预测与实验结果吻合较好。模拟结果显示:反应器出口的TiO2转化率随氯气浓度和反应温度的升高而增加;反应温度是影响氯化反应的关键因素,当反应温度为1 223 K时,TiO2的转化率可达98%;当氯化反应速率较小时,气泡是影响氯化反应的另一个重要因素。提高反应温度能明显提高流化床中乳相的反应速率,但对气泡相的氯化反应速率影响较小。氯化反应速率在床层中心区域较低,在近壁区域较大。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
邹汪阳
顾素敏
陈恒志
关键词 高钛渣鼓泡流化床氯化反应双流体模型未反应缩核    
Abstract: In this work, the shrinking unreacted core reaction kinetic model (SCM) for chlorination reaction of high-titanium slag was built and then its kinetic parameters were obtained through regressing experimental data in a small scale bubbling fluidized bed. A TFM-SCM model was established by coupling SCM with a two fluid model (TFM) to simulate the chlorination process of high titanium slag in a bubbling fluidized bed. The model predictions were in good agreement with experimental results. The simulation results showed that the conversion of TiO2 in the reactor increased with the increase of reaction temperature and chlorine concentration in the feed gas. Reaction temperature was the key factor that affected chlorination reaction of high-titanium slag and the conversion of TiO2 could reach 98% when reaction temperature was 1 223 K. Bubbles were another important factor that influenced chlorination process as chlorination rate was small. Increasing reaction temperature could significantly promote the reaction rate in the emulsion phase, but had a minor effect in the bubble phase. The reaction rate was smaller in the central region, but larger near the wall region.
Key wordshigh-titanium slag    bubbling fluidized bed    chlorination    two fluid model    shrinking unreacted core   
收稿日期: 2022-06-08     
PACS:    
基金资助:国家自然科学基金项目(51374261)。
作者简介: 邹汪阳(1998—)男,硕士研究生;陈恒志(1969—),男,教授,通讯联系人。E-mail: hzhchen@cqu.edu.cn。
引用本文:   
邹汪阳,顾素敏,陈恒志. 鼓泡流化床内高钛渣氯化过程模拟[J]. 化学反应工程与工艺, 2023, 39(5): 405-415.
ZOU Wangyang,GU Sumin,CHEN Hengzhi. Simulation of Chlorination of High-Titanium Slag in a Bubbling Fluidized Bed[J]. Chemical Reaction Engineering and Technology, 2023, 39(5): 405-415.
?

版权所有 © 《化学反应工程与工艺》编辑部
地址:浙江省杭州市浙江大学化工系内 邮编: 310027
电话:0571-87952503 E-mail: cret1985@zju.edu.cn