中国电机工程学报2012，Vol.32Issue(35)：37-45,前插6,10.
生物质热解焦吸附模拟烟气中SO2和NO的实验研究
Experimental Study on Adsorption Characteristics of SO2 and NO Using Biomass-pyrolysis Chars
摘要
Abstract
Biomass-pyrolysis chars were prepared under rapid pyrolysis and slow pyrolysis at pyrolysis temperature (Tp) of 673-1073 K from five kinds of biomass named wheat straw, rice straw, cotton stalk, maize stalk and rice husk. The effects of biomass char particle size, pyrolysis temperature, pyrolysis rate, composition of the simulated flue gas, adsorption reaction temperature, and biomass type on adsorption characteristics of SO2 and NO by using biomass-pyrolysis chars were carried out experimentally in a fixed-bed reactor. The results indicate that adsorption efficiency and adsorption capacity of SO2 over biomass-pyrolysis chars increase with decreasing the particle size of biomass chars; however, the increasing tendency is decreased gradually. With the increase of pyrolysis temperature, adsorption efficiency and adsorption capacity of SO2 show a trend of increase first and decrease later. Individual adsorption efficiency and adsorption capacity of SO2 and NO over biomass-pyrolysis chars prepared under rapid pyrolysis is better than that prepared under slow pyrolysis. Adsorption capacity of SO2 and NO over biomass-pyrolysis chars decreases with increasing of adsorption reaction temperature. Adsorption ability of SO2 is significantly better than that of NO over biomass-pyrolysis chars. SO2 in a simulated flue gas can promote the effect of NO adsorption significantly. At the condition of simultaneous adsorption of SO2 and NO by using biomass char named WS-RP873, SO2 adsorption capacity decreases 22.3% and NO adsorption capacity increases 112% while comparing with individual adsorption of SO2 or NO. At Tp=873 K and rapid pyrolysis, the order of SO2 adsorption capacity over biomass-pyrolysis chars is confirmed as wheat straw char > maize stalk char > rice straw char > rice husk char > cotton stalk char, and the order of NO adsorption capacity is confirmed as wheat straw char > rice straw char > maize stalk char > rice husk char > cotton stalk char.关键词
生物质焦/吸附效率/吸附量/SO2/NOKey words
biomass char/ adsorption efficiency/ adsorption capacity/ SO2/ NO分类
资源环境引用本文复制引用
卢平,陆飞,树童,王秦超..生物质热解焦吸附模拟烟气中SO2和NO的实验研究[J].中国电机工程学报,2012,32(35):37-45,前插6,10.基金项目
国家自然科学基金(51076067) （51076067）
江苏省自然科学基金(BK2010081). （BK2010081）
