The fractal dimension of calcined limestone and its sulfur-removal reactivity

被引：5

作者：

Luo, ZY

Yin, CG

Li, XT

Fang, MX

Gao, X

Zhou, JS

Ni, MJ

Cen, KF

机构：

[1] Inst. for Thermal Power Engineering, Zhejiang University, Hangzhou

来源：

ENERGY | 1997年 / 22卷 / 11期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/S0360-5442(97)00036-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A method based on fractal geometry is suggested to simulate the porous structure of calcined limestone, in which a model similar to the Menger sponge is employed for the porous calcine. The bulk fractal dimension is calculated on the basis of the experimentally obtained pore-size distribution density. The effects of various factors (such as particle size, calcination temperature and environment, etc.) on the porous structure (i.e. on its bulk fractal dimension) are studied. Combined with the results of sulfur-removal experiments and theoretical analysis, it is concluded that optimum utilization will be achieved when limestone is calcined to a structure with bulk fractal dimensions between 2.53 and 2.65. This fractal dimension is calculated under normal conditions and may provide an alternative ranking index for calcium-based sorbents. (C) 1997 Elsevier Science Ltd.

引用

页码：1051 / 1058

页数：8

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