Sulfation and reactivation characteristics of nine limestones

被引：145

作者：

Laursen, K ^{[1
]}

Duo, W ^{[1
]}

Grace, JR ^{[1
]}

Lim, J ^{[1
]}

机构：

[1] Univ British Columbia, Dept Chem & Bio Resource Engn, Vancouver, BC V6T 1Z4, Canada

来源：

FUEL | 2000年 / 79卷 / 02期

关键词：

limestone; sulfation; hydration;

D O I：

10.1016/S0016-2361(99)00147-7

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The sulfation and steam hydration reactivation characteristics of nine limestones were evaluated based on laboratory sulfation and hydration rests and scanning electron microscope analyses. The calcium utilization and the sulfation pattern of the limestones were found to depend on the morphology and microstructure of the calcined limestones. Three sulfation patterns were observed in the limestones: unreacted core, uniformly sulfated and network. The steam hydration behavior of the sulfated limestones was dependent on the sulfation pattern. Unreacted core particles appeared to be easier to reactivate, thereby giving higher overall calcium utilization, compared to network-sulfated particles. Uniformly sulfated particles did not react upon hydration and could not be reactivated with steam at 250 or 450 degrees C. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：153 / 163

页数：11

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