燃料化学学报2012，Vol.40Issue(4)：390-396,7.
生物质焦的表征及其吸附烟气中汞的研究
Characterization of biomass char and its mercury adsorption performance
摘要
Abstract
Four biomass of rice straw (RS), rice husk (RH), wood chips (WC) and cotton straw (CS) were chosen to prepare biomass chars which characterized by nitrogen adsorption/desorption and Fourier transform infrared spectroscopy (FT-IR). The influence of biomass type and pyrolysis temperature on pore structure and surface chemical properties of the chars was investigated. Mercury adsorption experiments were carried out in a fixed-bed reactor. The results show that specific surface area, micro-pore volume and fractal dimension of the biomass chars increase firstly and then decrease with increase of the pyrolysis temperature. With the pyrolysis temperature increasing, both the quantity and sorts of the superficial functional groups on the biomass chars reduce and they are dependent greatly on the biomass sorts. Both the superficial functional groups and contents of RH600 and RS600 are more abundant than that of WC600 and CS600. It is not simply direct relationship among the mercury adsorption capacity, the micro-pore volume and the fractal dimension of the biomass chars. It is supposed that the oxygen contained functional group may have dominant effect on the mercury adsorption.关键词
生物质焦/孔结构/表面官能团/汞吸附Key words
biomass char/ pore structure/ surface functional groups/ mercury adsorption分类
资源环境引用本文复制引用
尹建军,段钰锋,王运军,王卉,冒咏秋,韦红旗..生物质焦的表征及其吸附烟气中汞的研究[J].燃料化学学报,2012,40(4):390-396,7.基金项目
国家自然科学基金(51076030) （51076030）
煤燃烧国家重点实验室开放基金(FSKLCC1002). （FSKLCC1002）
