The Study of Calcium Sulfate Decomposition by Experiments Under O2/CO2 Atmosphere

被引：0
|
作者：
Liu, Y. [1 ]
Zhou, H. [2 ]
Liu, Y. H. [3 ]
Stanger, R. [3 ]
Elliot, L. [3 ]
Wall, T. [3 ]
Cen, K. F. [2 ]
机构：
[1] HangZhou Dianzi Univ, Sch Sci, Hangzhou 310018, Zhejiang, Peoples R China
[2] State Key Lab Clean Energy Utilizat, Hangzhou 310018, Zhejiang, Peoples R China
[3] Univ Newcastle, Chem Engn, Newcastle, NSW 2308, Australia
来源：
CLEANER COMBUSTION AND SUSTAINABLE WORLD | 2012年
关键词：
Calcium Shlfate; Decomposition; Oxy-Fuel; TGA; REDUCTION;
D O I：
暂无
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：
Sulphur emission and the effect on ash properties' and boiler tube corrosion in oxy-fuel combustion have received increasing attention in the recent years. Early investigation about calcium based desulphurization in oxy-fuel, addressed the advantage to reduce the SO2 emission. This paper, the decomposition of calcium sulphate was characterized by thermogravimetric analyzer. The results showed that the decomposition inhibited by increasing O-2 concentration and SO2 concentration resulted from recycled flue gas. And CO2 concentration had the negative effect, which can be solved by changing O-2 concentration through appropriately adjusting recycled flue gas ratio. The kinetics mechanism of calcium sulfate-decomposition in oxy-fuel combustion was further analyzed. Compared with conventional atmosphere, the reaction activation energy was heightened in oxy-fuel conditions, and the difference increased with rising temperature. So it can further confirm the advantage of calcium utilization rate under high temperature in oxy-fuel condition.
引用
收藏
页码：228 / 232
页数：5
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