%0 Journal Article
%T Influence of MnO2 on efficiency of sulfur-fixing for CaO in coal powder combustion<br>MnO2对煤粉中CaO固硫效率影响机理
%A Zhang Shengqin
%A Xie Bing
%A <br>张生芹
%A 谢兵
%J 环境工程学报
%D 2012
%I 
%X The effects of calcium-based sulfur catchers on sulfur-fixing were investigated by thermodynamics calculation and experiment methods when n(CaO)/n(S) ratio was equal to 2.0. The results indicate that efficiency of sulfur-fixing for CaO is the maximum. Moreover, the influences of MnO2 on sulfur-fixing of CaO were studied. The results indicate that addition of MnO2 can improve the efficiency of sulfur-fixing for CaO, and efficiency of CaO added with 1% MnO2 is the best. This is because that MnO2 can gradually decompose to Mn2O3 and Mn3O4. The oxides of manganese can catalyze the reaction of sulfur-fixing. Mn3O4 can react with SO2 to form MnSO4 and then improve efficiency of sulfur-fixing for calcium-based sulfur catchers.
%K coal powder
%K sulfur fixing
%K CaO
%K MnO2
%K thermodynamics<br>煤粉
%K 固硫
%K CaO
%K MnO2
%K 热力学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=37D4B66310E46B8362F31AD22EF06B55&yid=99E9153A83D4CB11&vid=B31275AF3241DB2D&iid=708DD6B15D2464E8&sid=3235A6941B4A640A&eid=E15BC6C12A07D09D&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=15