中国电机工程学报Issue(32)：21-28,8.
基于常压热重分析仪的煤焦-水蒸气加压反应动力学数据求解
Solution of Coal Char-steam Pressurized Kinetic Parameters Based on Atmospheric Thermo Gravimetric Analyzer
赵庆 1王晓亮 1陶舒畅1
作者信息
- 1. 中国东方电气集团有限公司中央研究院，四川省 成都市 611731
- 折叠
摘要
Abstract
According to the conclusions in literatures that the gasification rate is sensitive to reactive gas partial pressure, not total pressure, a convenient method to get pressurized kinetic parameters through atmospheric thermo gravimetric analyzer (TGA) experiments was investigated. NETZSCH STA449F3 simultaneous thermal analyzer was used to carry out char-steam atmospheric TGA experiments (steam partial pressure pH2O was 0.016~0.053 MPa) on four different types of coals. After processing the raw experiment data, relationships between reaction rate, temperature and pH2O were acquired, and expressed in the form of nth rate equation and Langmuir-Hinshelwood (LH) rate equation. The expressions were validated by experiments where pH2O was 0.057~0.063 MPa. The results show that the relative error between theoretical and experiment decreases with the increase of pH2O. LH rate equation can describe the effect of pH2O more accurately than nth rate equation in real applications. The effect of pH2O on reaction rate decreases when pH2O increases. The effect of temperature on reactivity of char-steam reaction is larger than that of pH2O. The effect of coal type will beat that of temperature while the range of temperature is narrow. The orders of chemical reactivity of coals at different temperatures and partial pressures are not completely consistent, and therefore cannot be generalized from a specific condition.关键词
煤焦-水蒸气反应/压力/热重分析仪/n 级速率方程/LH速率方程Key words
char-steam reaction/pressure/thermo gravimetric analyzer (TGA)/nth rate equation/Langmuir-Hinshelwood (LH) rate equation分类
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赵庆,王晓亮,陶舒畅..基于常压热重分析仪的煤焦-水蒸气加压反应动力学数据求解[J].中国电机工程学报,2013,(32):21-28,8.
