SIDERITE DECOMPOSITION IN RETORTING ATMOSPHERES

被引:28
作者
HURST, HJ
LEVY, JH
PATTERSON, JH
机构
[1] CSIRO Division of Coal and Energy Technology, Lucas Heights Research Laboratories, Menai, NSW 2234
关键词
OIL SHALE; THERMOGRAVIMETRIC ANALYSIS; RETORTING;
D O I
10.1016/0016-2361(93)90097-L
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
This work extends the characterization of siderites found in Tertiary Australian oil shales by investigating their decomposition in atmospheres resembling retorting conditions. The decomposition of mineral siderite samples and selected oil shale samples with high siderite contents, representing the four types of siderites most commonly found, were studied by thermogravimetry in controlled carbon dioxide nitrogen-water vapour atmospheres. The decomposition temperature of each of the siderite types increased with increasing partial pressure of carbon dioxide, and decreased with increasing partial pressure of water vapour. Both effects were non-linear: larger temperature changes were observed at lower partial pressures. This study makes it possible to predict the amount of siderite decomposition under typical retorting conditions and the consequences for both the retorting and combustion stages during oil shale processing.
引用
收藏
页码:885 / 890
页数:6
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