摘要
通过立式旋风炉实验台研究以飞灰重溶的方法解决高温燃烧固硫问题的可行性 .实验发现 :影响高温固硫效率的主要因素是钙硫比和温度 .和循环流化床炉内燃烧固硫一样 ,随着钙硫比的增加 ,高温固硫效率提高 ,同时钙的利用率和锅炉燃烧效率下降 .与循环流化床炉内固硫不同 ,高温固硫的最佳燃烧温度范围在 1 30 0℃～ 1 40 0℃之间 ,这一窗口温度的存在是各种高温固硫机理联合作用的结果 .这一点和大多数文献报道的实验研究结果一致 ,实验研究同时发现 :飞灰主要组分 Al2 O3 ,Fe2 O3 和 Si O2 等都可以不同程度地提高高温固硫效率 ,但是它们的反应活性低于化学制剂 .
The high temperature combustion desulfurization possibility by fly ash remelting is study in vertical experiment cyclone furnace.It is founded that the experiments show that,Ca/S and temperature are main factors to control of the high temperature desulphurization.Similar with CFB combustion,the desulphurization efficiency is increasing with the increasing of Ca/S,while the utilization ratio of Ca and combustion efficiency is decreasing.The optimal temperature range of high temperature desulphurization is between 1 300 ℃ to 1 400 ℃ ,which differs from CFB combustion desulphurization.The formation of such temperature 'window' is the result of multi mechanisms that is matching with the other research.The main components of fly ash,such as Al 2O 3,Fe 2O 3 and SiO 2 can improve desulphurization.But reaction activities of them are lower than that of other chemical reagents.The physical and chemical features of S compound in the fly ash affect the desulphurization efficiency.
出处
《煤炭转化》
CAS
CSCD
北大核心
2003年第3期64-67,共4页
Coal Conversion
基金
国家重大基础研究基金资助项目 (2 0 0 0 2 63 0 9)
