钛渣碳热氯化尾气的组成
Components of Off-gas Produced by a Carbothermal Chlorination of Titanium Slag
查看参考文献17篇
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文摘
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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/CO_2摩尔比值(q_(E_q)),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(q_(E_x), 0.2～0.3)和文献参考值(q_(R_e))进行了比较. 结果显示,q_(E_x)接近q_(R_e)但小于q_(E_q),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,q_(E_x)
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其他语种文摘
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Based on the thermodynamic calculation of carbothermal chlorination of titanium slag, the effects of carbon/TiO_2 ratio,chloride amount and temperature on equilibrium CO/CO_2 molar ratio (q_(E_q)) 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/CO_2 molar ratio (q_(E_q)) 0.2～ 0.3. The comparison of q_(E_x),q_(E_q) and reference data (q_(R_e) fruther indicated that q_(E_x) was close to q_(R_e) (about 0.5), but different from q_(E_q) (≥4.3), being consistent with anticipation of q_(E_x) for the combined fluidized bed. Based on phase analysis of slag, the difference between q_(E_x) and q_(E_q) 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 SiO_2. |
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来源
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过程工程学报
,2009,9(1):63-68 【核心库】
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关键词
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加碳氯化
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钛渣
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CO/CO_2平衡摩尔比
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热力学分析
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地址
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1.
中国科学院过程工程研究所, 中科院多相复杂系统重点实验室, 北京, 100190
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清华大学核能与新能源技术研究院, 北京, 100084
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1009-606X |
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学科
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化学工业 |
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文献收藏号
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CSCD:3564833
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