The Study of Calcium Sulfate Decomposition by Experiments Under O2/CO2 Atmosphere
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 O2 concentration and SO2 concentration resulted from recycled flue gas.And CO2 concentration had the negative effect,which can be solved by changing O2 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.
Calcium Shlfate Decomposition Oxy-Fuel TGA
Y.Liu H.Zhou Y.H.Liu R.Stanger L.Elliot T.Wall K.F.Cen
The School of Science,HangZhou Dianzi University,HangZhou 310018,China State Key Laboratory of Clean Energy Utilization,HangZhou 310018,China Chemical Engineering,The University of Newcastle,Newcastle 2308,Australia
国际会议
The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)
哈尔滨
英文
228-232
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）