摘要
N2O是一种既会破坏臭氧层又可以造成温室效应的大气污染物。化石燃料的燃烧是人类活动产生N2O的主要来源。煤炭燃烧特别是运行温度为850～950℃的流化床燃烧会排放大量的N2O。简要阐述了流化床燃烧过程中N2O的生成、分解机理和影响N2O生成量的各种因素，以及减少N2O排放量的技术措施，特别是介绍了流化床脱硝技术——选择性非催化还原（SNCR）过程中的N2O控制研究进展，并对各种控制排放技术前景进行了展望。
N2O is one of the air pollutants, and it contributes to global warming through the greenhouse gas effect and the stratospheric ozone depletion. The burning of fossil fuels is a major cause of N2O emission by human activities. Particu- larly, N2O formation is more in favor in circulating fluidized bed （CFB） boilers when the furnace temperature is about 850 to 950 ℃. The formation and decomposition of N2O are reviewed. Forthermore, various factors affecting the amount of N2O formation and measures to reduce N2O emissions are summarized, especially in SNCR.
出处
《工业锅炉》
2016年第1期16-20,25,共6页
Industrial Boilers
基金
国家自然科学基金(51276075)
关键词
N2O
流化床
排放控制
SNCR
N2O
circulating fluidized bed
emission control
SNCR
