烧结程度对CaO固硫反应转化率及动力学参数的影响

作     者：武增华 寇鹏 杨海波 陈昌和 WU Zeng hua 1,2 , KOU Peng 1,2 , YANG Hai bo 1,2 , CHEN Chang he 3 (1. Department of Chemistry, Tsinghua University, Beijing 100084, China;2. Shenzhen Student Academy, Tsinghua University, Shenzhen 518000, China;3. State Key Labora

作者机构：清华大学化学系 清华大学热能系北京100084 

出 版 物：《燃料化学学报》 (Journal of Fuel Chemistry and Technology)

年 卷 期：2001年第29卷第3期

页      面：273-276页

核心收录：

学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：国家重点基础研究专项基金 (G19990 2 2 2 0 5 1) 清华大学基础研究基金 (JC19990 5 1)&& 

主　　题：烧结 固硫反应 动力学 煤 燃烧 氧化钙 转化率 固硫剂 环境保护 活化能 

摘      要：The conversion and kinetic parameters of desulfurizors of CaO of different particle agglomeration degree are investigated with themogravimetric method (TG). The results showed that the CaO particle agglomeration degree increases when CaO calcined temperature or time increases. The dusulfurizors that have higher particle agglomeration degree have low conversion in the desulfurization reaction. The kinetic behavior of desulfurization can be explained by a grain model. The activity energies of suface reaction (E a) and of product layer diffusion (E p) were determined by using the grain model. The overall rates of desulfurization are controlled initially by surface chemical reaction, and then shift to product layer diffusion control. The activity energy of surface reaction (E a) enhances when the CaO particle agglomeration degree increases.