钛渣碳热氯化尾气的组成

›› 2009, Vol. 9 ›› Issue (1): 63-68.

钛渣碳热氯化尾气的组成

熊绍锋袁章福徐聪徐聪

中国科学院过程工程研究所多相反应重点实验室中国科学院过程工程研究所多相反应重点实验室清华大学核能与新能源技术研究院

收稿日期:2008-10-24 修回日期:2008-12-19 出版日期:2009-02-20 发布日期:2009-02-20
通讯作者: 熊绍锋

Components of Off-gas Produced by a Carbothermal Chlorination of Titanium Slag

XIONG Shao-feng TYUAN Zhang-fu XU Cong XU Cong

State Key Laboratory of Multiphase & complex Systems, Institute of Process Engineering, Chinese Academy of Sciences Institute of Process Engineering, Chinese Academy of Science Institute of Nuclear and New Energy Technology, Tsinghua University

Received:2008-10-24 Revised:2008-12-19 Online:2009-02-20 Published:2009-02-20
Contact: XIONG Shao-feng

摘要/Abstract

摘要： 基于对钛渣碳热氯化反应的热力学计算，系统地分析了不同碳/矿比、氯气量和反应温度下氯化炉尾气中的平衡CO/CO2摩尔比值(qEq)，并与新型复合流化床作氯化反应器的钛渣碳热氯化实验值(qEx, 0.2~0.3)和文献参考值(qRe)进行了比较. 结果显示，qEx接近qRe但小于qEq，这与对沸腾氯化工艺的预期情况相符. 炉渣的物相分析结果表明，qEx

关键词: 加碳氯化, 钛渣, CO/CO2平衡摩尔比, 热力学分析

Abstract: Based on the thermodynamic calculation of carbothermal chlorination of titanium slag, the effects of carbon/TiO2 ratio, chloride amount and temperature on equilibrium CO/CO2 molar ratio (qEq) in off-gas released from chlorination reactor were investigated. The experiment was done using a novel combined fluidized bed as chlorination reactor to obtain the corresponding experimental CO/CO2 molar ratio (qEx) 0.2~0.3. The comparison of qEx, qEq and reference data (qRe) further indicated that qEx was close to qRe (about 0.5), but different from qEq (≥4.3), being consistent with anticipation of qEx for the combined fluidized bed. Based on phase analysis of slag, the difference between qEx and qEq was mainly attributed to short retention time (about 1 s) of materials in the bed, which led to non-equilibrium state for carbothermal chlorination of titanium slag, and carbothermal chlorination of oxide impurities contained in the slag, such as CaO, MgO and SiO2.

Key words: carbothermal chlorination, titanium slag, CO/CO2 molar ratio, thermodynamic analysis

中图分类号:

TQ051

熊绍锋袁章福徐聪徐聪. 钛渣碳热氯化尾气的组成[J]. , 2009, 9(1): 63-68.

XIONG Shao-feng TYUAN Zhang-fu XU Cong XU Cong. Components of Off-gas Produced by a Carbothermal Chlorination of Titanium Slag[J]. , 2009, 9(1): 63-68.

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