Large-scale synthesis of artificial zeolite from coal fly ash with a small charge of alkaline solution
Large-scale synthesis of artificial zeolite from coal fly ash with a small charge of alkaline solution
复制标题
粉煤灰少量碱性溶液大规模合成人造沸石
DOI：
10.1016/j.fuel.2005.02.026
复制
发表时间：
2005
期刊：
影响因子：
7.4
通讯作者：
Y. Tani
中科院分区：
文献类型：
--
作者：
R. Moriyama;S. Takeda;M. Onozaki;Yukuo Katayama;K. Shiota;Tomoya Fukuda;Hiroaki Sugihara;Y. Tani
介绍了一种将粉煤灰转化为人造沸石的新工艺。该工艺由高温操作和操作期间的除水组成。通过实验确定了最佳工艺条件为：NaOH用量2.5-3.5mol/dm ~ 3，液固比0.88- 1.10dm ~ 3/kg，NaOH投加量2.2 ~ 3.9mol/kg-CFA。从中试装置获得的沸石具有比从测试单元获得的沸石更高的阳离子可交换容量，并且与使用常规方法制备的沸石相当。
A new process for converting coal fly ash to an artificial zeolite is described. The process is comprised of a high-temperature operation and water removal during the operation. Suitable operation parameters of the process were investigated using a test unit, and the optimal conditions were found to be 2.5–3.5mol/dm3of NaOH and 0.88–1.10dm3/kg of liquid/solid, sodium hydroxide charge from 2.2 to 3.9mol/kg-CFA. The zeolites obtained from a pilot plant had a higher cation exchangeable capacity than those from the test unit and were comparable to zeolites prepared using a conventional method.