NO Reduction over Biomass Char in the Combustion Process

被引:54
作者
Dong, Li [1 ]
Gao, Shiqiu [1 ]
Xu, Guangwen [1 ]
机构
[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
基金
中国国家自然科学基金;
关键词
PULVERIZED-COAL COMBUSTION; NITRIC-OXIDE REDUCTION; NITROGEN-OXIDES; CARBON; EMISSION; COCOMBUSTION; STRAW; SO2;
D O I
10.1021/ef900913p
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
In the biomass combustion process, fuel N in biomass call be oxidized into NOx, causing acid rain and photochemical smog. Some Measures should be taken to control NOx emissions from biomass combustion. In this paper, NO reduction over rice husk char in the combustion process was studied in it fixed-bed reactor to optimize the biomass combustion process. The results showed that biomass char was more active in the presence of oxygen to reduce NO than it was in the Inert atmosphere. With file increase of oxygen, more NO can be reduced by biomass char. From 973 to 1173 K, NO reduction over rice husk char increased with increasing temperature, Whereas the difference between NO reduction with and without oxygen decreased with increasing temperature. Moreover, the presence of CO and SO2 in the combustion process was shown to enhance NO reduction over biomass char to different degrees. Therefore, it is in effective way to reduce NO from biomass combustion by emphasizing NO reduction over biomass char.
引用
收藏
页码:446 / 450
页数:5
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