| CaO-超细高岭土复合固硫剂固硫动力学研究 |
| |
| 引用本文： | 刘金权,武增华,王立新. CaO-超细高岭土复合固硫剂固硫动力学研究[J]. 燃料化学学报, 2004, 32(4): 424-428 |
| |
| 作者姓名： | 刘金权 武增华 王立新 |
| |
| 作者单位： | 1. Department of Chemistry, Tsinghua University, Beijing 100084, China; 2. Shenzhen Graduate School of Tsinghua University, Shenzhen 518055, China; 3. Shenzhen Baoan Science and Technology Office, Shenzhen 518101, China |
| |
| 基金项目： | 国家重点基础研究发展规划项目(G1999022051)。~~ |
| |
| 摘 要： | 利用高岭土的加工产品超细高岭土，制备了CaO-超细高岭土复合固硫剂，用热分析法研究其固硫性能和特征，并用等效粒子模型对该固硫剂固硫反应的动力学过程进行模拟和计算，得到了固硫反应的动力学参数。研究表明，CaO-超细高岭土复合固硫剂有着较好的固硫率，特别是高于1?000?℃时在固硫反应后期的产物层扩散控制阶段呈现很好的固硫率增长，1 009 ℃下固硫率较CaO提高达26％。
|
| 关 键 词： | 复合固硫剂 CaO-超细高岭土 固硫反应 动力学 |
| 文章编号： | 0253-2409(2004)04-0424-05 |
| 收稿时间： | 2003-08-28 |
| 修稿时间： | 2003-08-28 |
Sulfur fixing and kinetics of CaO-kaolin complex reagent |
| |
| LIU Jin-quan. Sulfur fixing and kinetics of CaO-kaolin complex reagent[J]. Journal of Fuel Chemistry and Technology, 2004, 32(4): 424-428 |
| |
| Authors: | LIU Jin-quan |
| |
| Affiliation: | LIU Jin-quan~ |
| |
| Abstract: | Kaolin is a low-cost and abundant resource in nature. Its product, superfine kaolin, was used as additive to prepare CaO-kaolin complex sulfur fixing reagent. The sulfur fixing efficiency of CaO-kaolin is studied by thermogravimetric technique. The results are compared to that of CaO. The conversion of CaO in CaO-kaolin is improved much more than that of pure CaO by 26% when reacting at 100 9 ℃. The grain model of reaction kinetics is used to describe the sulfur fixing process of CaO-kaolin. Because of increasing synchronously, the kinetic data of activation energy Ea and the gene k0 can't reflect the activity of sulfur fixing reaction. Reaction velocity k, diffusion coefficient DS of CaO and CaO-kaolin at different temperatures show that CaO-kaolin has better reaction performance because kaolin greatly improves the diffusion coefficient DS. |
| |
| Keywords: | complex reagent CaO-kaolin sulfur fixing kinetics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《燃料化学学报》浏览原始摘要信息 |
|
点击此处可从《燃料化学学报》下载全文 |
