欢迎访问《生物质化学工程》,

生物质化学工程 ›› 2014, Vol. 48 ›› Issue (6): 36-43.doi: 10.3969/j.issn.1673-5854.2014.06.007

• 研究报告 • 上一篇    下一篇

热解温度对生物质和煤成焦特性的影响

米翠丽1, 樊孝华1, 魏刚1, 马登卿1, 张利孟2, 王学斌2   

  1. 1. 国家电网 河北省电力公司;电力科学研究院, 河北 石家庄 050021;
    2. 西安交通大学 能源与动力工程学院;热流科学与工程教育部重点实验室, 陕西 西安 710049
  • 收稿日期:2014-03-13 出版日期:2014-11-30 发布日期:2014-12-10
  • 通讯作者: 王学斌(1984-), 男, 讲师, 博士, 研究方向:固体燃料的高效清洁利用;E-mail:wxb005@mail.xjtu.edu.cn. E-mail:wxb005@mail.xjtu.edu.cn
  • 作者简介:米翠丽(1982-), 女, 河北石家庄人, 高级工程师, 博士, 研究方向:电站锅炉污染防治;E-mail:micuili1982@163.com

Effect of Pyrolysis Temperature on Characteristics of Biomass Char and Coal Char

MI Cui-li1, FAN Xiao-hua1, WEI Gang1, MA Deng-qing1, ZHANG Li-meng2, WANG Xue-bin2   

  1. 1. State Grid Hebei Electric Power Corporation; Hebei Electric Power Research Institute, Shijiazhuang 050021, China;
    2. School of Energy and Power Engineering, Xi'an Jiaotong University, Key Laboratory of Thermo-fluid Science and Engineering, Xi'an 710049, China
  • Received:2014-03-13 Online:2014-11-30 Published:2014-12-10

摘要: 以麦秆、橡树木屑和华亭烟煤为原料,研究热解产物的理化特性并讨论燃料种类和热解温度对其的影响.采用BET、SEM-EDS、XRD和TGA对其进行分析表征.结果表明:在600~1 000 ℃的温度范围内,煤焦的比表面积和孔隙容积随热解温度增加而增大,而木屑焦的变化不明显,麦秆焦在800 ℃时比表面积和孔隙容积最大,更高温度则发生烧结;焦样中C元素含量随热解温度升高而增加,而H元素和O元素随之降低,麦秆焦的着火特性优于木屑焦和煤焦.木屑焦和煤焦的着火特性随热解温度升高而变差,而麦秆焦在800 ℃具有最佳的着火特性.

关键词: 生物质, 煤, 焦炭, 热解, 特性

Abstract: The effects of fuel type and pyrolysis temperature on the physicochemical properties of coal char (C-char) and biomass char were investigated with straw,oak sawdust,and Huating bituminous coal as raw materials.BET,SEM-EDS,XRD,and TGA were used to analyze the coke specimens.Results show that the BET surface area and porous volume of C-char increase as the pyrolysis temperature increases,whereas those of wood char (W-char) insignificantly change,from 600 to 1 000 ℃.Straw char (S-char) has the largest surface area and pore volume at 800 ℃ as sintering occurs at higher temperatures.As the pyrolysis temperature increases,the C content of char increases and its H and O contents decrease.The ignition characteristic of S-char is superior to those of W-char and C-char.The ignition characteristics of Wood-char and C-char decrease with the increase of pyrolysis temperature.Straw-char exhibits the best ignition characteristic at 800 ℃.

Key words: biomass, char, pyrolysis, surface area, element distribution, reactivity

中图分类号: