Transformation of calcareous oil-shale circulating fluidized-bed combustion boiler ashes under wet conditions

被引：36
|
作者：
Liira, Martin [1 ]
Kirsimaee, Kalle [1 ]
Kuusik, Rein [2 ]
Motlep, Riho [1 ]
机构：
[1] Univ Tartu, Inst Ecol & Earth Sci, Dept Geol, EE-51014 Tartu, Estonia
[2] Tallinn Univ Technol, Lab Inorgan Mat, Fac Chem & Mat Technol, EE-19086 Tallinn, Estonia
来源：
FUEL | 2009年 / 88卷 / 04期
关键词：
Hydration; Kukersite; Oil shale; Ettringite; XRD; FBC ASH; HYDRATION; ETTRINGITE; CARBONATION; RESIDUES; BEHAVIOR; SORBENT; REUSE;
D O I：
10.1016/j.fuel.2008.08.012
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 hydration and transformation of Ca-rich kerogenous oil-shale (kukersite) ashes, formed in circulating fluidized bed (CFB) combustion furnaces, were investigated during a one-year experiment. During the first stages the process was characterized by rapid hydration of free lime hydration into portlandite and dissolution of anhydrite and periclase, whereas the formation of (crystalline) ettringite was somewhat delayed. During the final process, ettringite and portlandite that are unstable under atmospheric conditions were replaced by stable calcite and Ca-sulphate. (C) 2008 Elsevier Ltd. All rights reserved.
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页码：712 / 718
页数：7
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