| 石灰石脱硫的加压热重分析试验 |
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| 引用本文： | 刘前鑫 刘柏辉. 石灰石脱硫的加压热重分析试验[J]. 东南大学学报(自然科学版), 1997, 27(2): 1-7 |
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| 作者姓名： | 刘前鑫 刘柏辉 |
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| 作者单位： | 东南大学热能研究所 |
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| 摘 要： | 对徐州３种石灰石和南京一种白云进行脱硫加压热重试验，分析了石灰石脱硫反应的机理，当ＣＯ２分压低于ＣａＣＯ２平衡分解压力时，ＣａＣＯ２将发生分解，此时的硫化瓜发生在ＣａＯ和ＳＯ２之间；当Ｃ粉压高于ＣａＣｏ２平衡分解压力时，ＣａＣＯ３将不发生分解，直接与ＳＯ２发生硫化反应，得到了压力、石灰石品种、温度和ＳＯ２浓度等对钙利用率的影响规律，同时计算了石灰石脱硫的反应动力学参数。
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| 关 键 词： | 石灰石 脱硫 热重分析法 流化床 燃烧 二氧化硫 |
Thermogravimetric Experiments on Sulphur Absorption of Limestone under Pressurized Condition |
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| Liu Qianxin Liu Baihui. Thermogravimetric Experiments on Sulphur Absorption of Limestone under Pressurized Condition[J]. Journal of Southeast University(Natural Science Edition), 1997, 27(2): 1-7 |
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| Authors: | Liu Qianxin Liu Baihui |
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| Abstract: | The sulphur absorption capacities of three limestones from Xuzhou City and one dolomite from Nanjing City were determined by means of a pressurized thermogravimetric apparatus. The mechanism of sulfation reaction of limestone are analyzed. CaCO 3 will calcine at CO 2 partial pressure below the thermodynamic equilibrium pressure, then, CaO reacts with SO 2. When CO 2 partial pressure is higher than the thermodynamic equilibrium pressure, CaCO 3 does not calcine, it reacts with SO 2 directly. The effects of pressure, limestone kind, temperature and concentration of SO 2 on the sorbent conversion rate are investigated. Besides, the values of kinetics paramters are calculated. |
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| Keywords: | limestone sulfation thermogravimetry pressure |
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