中国电机工程学报2011，Vol.31Issue(8)：38-44,7.
生物燃料再燃脱硝特性实验研究
Experimental Study on Characteristics of Nitrogen Oxides Reduction by Biofuel Reburning
摘要
Abstract
The experimental studies on the rebuming with sawdust, rice husk and dry sludge have been performed on a 93 kW pulverized coal single-burner furnace. The influences of biofuel type, biofuel carrier gas and rebuming ratio on the nitric oxide (NO) reduction efficiency were investigated and analyzed. Detailed in-furnace measurements for O2, NO, CH4, HCN and NH3 concentration distributions in the reburn zone were also accomplished. The experimental results show that the maximum NO reduction efficiency of 68% by the sawdust rebuming, 58% by the rice husk rebuming, and 45% by the dry sludge rebuming can be achieved under the experimental conditions. At least 10% increasing of the NO reduction efficiency can be obtained when the biofuel carrier air is replaced by the recycled flue gas. The results of in-furnace measurements reveal that the major nitrogen-containing intermediates in the reburn zone is HCN with the sawdust and rice husk rebuming, and is NH3 with the dry sludge rebuming. The concentration distributions of O2, CH4, HCN and NH3 are greatly related with the profiles of NO concentration in the reburn zone. These key gaseous species play a crucial role to nitrogen oxides reduction.关键词
生物燃料/氮氧化物/再燃/单角炉/NO还原率分类
能源科技引用本文复制引用
苏胜,何金亮,向军,胡松,孙路石..生物燃料再燃脱硝特性实验研究[J].中国电机工程学报,2011,31(8):38-44,7.基金项目
国家自然科学基金项目(50806025). （50806025）
