黏胶废液对福建无烟煤水蒸气催化气化的动力学和补偿效应  

Kinetics and compensation effects during steam gasification of Fujian anthracite using viscose liquor as catalyst

作　　者：林驹[1] 张济宇[1] 钟雪晴[1] 

机构地区：[1]福州大学化学工程技术研究所,福建福州350002

出　　处：《燃料化学学报》2009年第4期398-404,共7页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(20376014);福建省科技厅重点资助项目(HG99-01)

摘　　要：采用黏胶废液为催化剂，对福建尤溪无烟粉煤在常压热分析仪中的水蒸气催化气化动力学进行了研究。在850℃～950℃测定了黏胶废液催化剂添加量（NaOH浓度为计算基准）从0～12％时的碳转化率随气化时间的变化，表明黏胶废液具有提高碳转化率和气化速率的作用，同时确定了该黏胶废液催化剂的加载饱和浓度。基此得出的尤溪无烟粉煤水蒸气催化气化反应动力学符合缩芯模型，并给出相应的动力学参数。进而分析表明，该催化气化过程存在明显的补偿效应，最后给出黏胶废液对尤溪无烟粉煤水蒸气催化气化包括补偿效应的动力学方程。Catalytic steam gasification kinetics of Fujian Youxi anthracite using viscose liquor as catalyst was investigated in an isothermal thermo-gravimetric analyzer under ambient pressure. Coal conversions versus reaction time with different viscose liquor concentrations （0 - 12% NaOH ） were measured at the temperature range from 850 ℃ to 950 ℃. The research shows that the viscose liquor can greatly improve the gasification rate and carbon conversion. The Loading Saturation Level （LSL） of the viscose liquor within the experimental conditions was also determined. The catalytic steam gasification reaction can be well fitted by a shrinking-core model （SCM） and the reaction rate constants are obtained. The kinetic analysis indicates that the catalytic gasification exhibits a prominent compensation effect between the activation energy and the pre-exponential factor. The kinetic equation including the compensation effects for the catalytic steam gasification of Fujian Youxi anthracite using viscose liquor as catalyst is presented.

关 键 词：水蒸气催化气化 黏胶废液 动力学参数 补偿效应 

分 类 号：TQ54[化学工程—煤化学工程]