COAL PARTICLE FLOW PATTERNS FOR O{sub 2} ENRICHED, LOW NO{sub x} BURNERS

Curtis, Jennifer Sinclair

Purdue University (United States)

关键词: Combustion;    Burners;    Flames;    01 Coal, Lignite, And Peat;    Particulates;   

DOI  :  10.2172/825268
RP-ID  :  NONE
RP-ID  :  FG26-00NT40816
RP-ID  :  825268

美国|英语

来源: UNT Digital Library

【 摘 要 】

This year we focused on investigating the effect of particulate fines in both the hot flow and cold flow studies. This report summarizes the results of those studies in the hot flow and cold flow geometries. In the hot flow studies, increasing the fines content in the pulverized coal enhances combustion stability producing attached flames that were otherwise detached. NO{sub x} emissions are reduced by up to 50% through flame attachment. For always-attached flames, increasing the fraction of fines had little impact on total NO emissions. In the cold flow studies we found that the presence of the fine particles enhanced the velocity fluctuations of the coarse particles. The presence of coarse particles, however, did not affect the motion of the fine particles.