燃料化学学报2017，Vol.45Issue(8)：924-931,8.
再燃温度对稻壳焦理化结构演变的影响
Effect of reburning temperature on physico-chemical characteristics evolution of rice husk char
摘要
Abstract
Different kinds of rice husk (RH) char were prepared in an entrained flow reactor under reburning conditions.The physico-chemical properties of pyrolyzed RH chars were characterized by scanning electron microscopy-energy dispersive spectrometer (SEM-EDS),specific surface area and pore size analyzer,X-ray diffraction (XRD) and Fourier transform infra-red (FT-IR) spectroscopy,respectively.The effects of temperature on evolution of physico-chemical structures of RH chars were discussed.The results indicate that the specific surface area and pore volume of RH chars increase significantly from 850 to 1 150 ℃.The order of release of alkaline and alkaline earth metals (AAEMs) bound in RH is Na ＞ Ca ＞ Mg ＞ K.With increasing reaction temperature,release fractions of AAEMs generally increase firstly and then being stable,and the chlorine release fraction increases gradually.AAEMs in RH chars are mainly in the form of silicate and sulfate.The surface oxygen-containing functional groups in RH chars decrease significantly with increasing temperature.关键词
再燃/稻壳/稻壳焦/温度/理化特性/碱(土)金属Key words
reburning/rice husk/rice husk char/temperature/physico-chemical characteristics/alkaline and alkaline earth metals分类
能源科技引用本文复制引用
史加腾,尹欣怡,卢平,胡昔鸣..再燃温度对稻壳焦理化结构演变的影响[J].燃料化学学报,2017,45(8):924-931,8.基金项目
The project was supported by the National Natural Science Foundation of China (51476079),Jiangsu Province Prospective Cooperation Research Project of China (BY2015001-01),Jiangsu Province Major Project of University Natural Science Research of China (15KJA610002).国家自然科学基金(51476079),江苏省前瞻性联合研究项目(BY2015001-01)和江苏省高校自然科学研究重大项目(15KJA610002)资助 （51476079）
