Effect of MnSO4 on the Removal of SO2 by Manganese-Modified Activated Coke

被引:52
作者
Yang, Lin [1 ]
Jiang, Xia [1 ]
Yang, Zhi-Shan [1 ]
Jiang, Wen-Ju [1 ,2 ]
机构
[1] Sichuan Univ, Coll Architecture & Environm, Chengdu 610065, Peoples R China
[2] Natl Engn Res Ctr Flue Gas Desulfurizat, Chengdu 610065, Peoples R China
基金
中国国家自然科学基金;
关键词
SULFUR-DIOXIDE; FLUE-GAS; THERMAL REGENERATION; CATALYTIC REMOVAL; CARBON-FIBERS; ADSORPTION; DESULFURIZATION; TEMPERATURE; OXIDATION; SURFACE;
D O I
10.1021/ie503729a
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
In this study, the effect of manganese sulfate (MnSO4) on desulfurization capacity was investigated through carrying out consecutive desulfurizationregeneration cycles of MnO2-blended activated coke (Mn/AC). It was observed that MnSO4 was produced on the surface of Mn/AC during the desulfurization process, and the amount of MnSO4 accumulated on Mn/AC first increased significantly and then became relatively stable. In addition, the desulfurization results of MnSO4-impregnated Mn/AC indicate that Mn2+ from MnSO4 could form new liquid-phase catalysis, which existed with the solid-phase catalysis (blended MnO2) simultaneously in the desulfurization system. However, an excessive amount of MnSO4 over the surface of activated coke can block the access of SO2 to the pore network, hampering the activity of the solid-phase catalyst and, consequently, resulting in a decrease of desulfurization capacity
引用
收藏
页码:1689 / 1696
页数:8
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