中国电机工程学报2012，Vol.32Issue(z1)：115-120,6.
棉杆热解过程中焦孔隙结构演变及分形特征
Investigation of the Forming Property and Fractal Dimension of Cotton Char Pore Structure During Biomass Pyrolysis
摘要
Abstract
The changes in pore structure characteristics of cotton stalk/char particles prepared by pyrolysis process were studied, the samples were characterized by N2 isothermal absorption method, and their data points were used to analyze the fractal properties of the obtained samples. The results indicate that pyrolysis temperature has a notable impact on the pore structure and morphology of biomass char. Pyrolysis temperature is found to influence the size and the shape of char particles. The Brunauer-Emmett Teller (BET) specific surface area SBET of cotton char undergoes a complex process during pyrolysis: firstly increase to a maximum value at 650 ℃, then decrease again. The change of fractal dimension D is similar to that of SBET, this shows there are some correlation between them. Fractal dimension D is better to describe pore structure characteristics.关键词
生物质/棉杆/热解/孔隙结构/分形维数Key words
biomass/ cotton stalk/ pyrolysis/ pore structure/ fractal dimension分类
能源科技引用本文复制引用
李开志,杨海平,陈应泉,陈汉平,王贤华..棉杆热解过程中焦孔隙结构演变及分形特征[J].中国电机工程学报,2012,32(z1):115-120,6.基金项目
国家自然科学基金项目(51021065,50930006) （51021065,50930006）
国家高技术研究发展计划(863计划)项目(012AA051803). （863计划）
