煤与生物质(稻秸秆)共热解反过程及协同性研究  

Co-pyrolysisi reaction and interaction effects of coal-biomass(corn stalk) blends

作　　者：郭凯[1] 李伟振[1] 王立群[1] 宋旭[1] 

机构地区：[1]江苏大学能源与动力学院,江苏镇江212013

出　　处：《郑州轻工业学院学报（自然科学版）》2008年第5期77-80,88,共5页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：江苏省科技攻关项目(BE2004304)

摘　　要：利用综合热分析仪,对煤(烟煤、无烟煤)与稻秸秆按不同比例混合及各自单独热解反应进行了热解实验.结果表明:生物质与煤的热解过程可简化看作是在较低温度段(400℃以下)热解以生物质为主;在高温段(600～850℃)热解以煤为主.生物质对煤的热解过程有促进作用,随着生物质掺混比例的上升,煤的热解高峰区的温度向低温区移动.但是促进程度随着生物质的量的增加而减小,并且对烟煤的促进作用要比对无烟煤的作用明显.对无烟煤与稻秸秆(质量比3:2)的混合物按升温速率分别为10℃/min和20℃/min的热解过程作了对比实验,得出升温速率加快会造成混合物热解反应所需的温度升高和热解产物余量增加的结论.The pyrolysis characteristic of coal（ lignite or hard coal） mixed with corn stalk in different proportions was studied with a thermogravimentric analyzer. The results show the pyrolysis of mixture is mainly acted by corn stalk in low temperature （ below 400 ℃ ）, and so do it by coal in high temperature （ 600-800 ℃ ） ;The corn stalk can do favor to the pyrolysis process of coal by reducing the temperature of coal＇s pyrolysis, but this effect would be mitigated by the corn stalk＇s increase. Furthermore the phenomenon of lignite is clearer than that of hard coal. The compared trial in different heating rates（ as 10 ℃/min and 20℃/min） was done to speculate the effect on the co-pyrolysis, and found that both the temperature of the co-pyrolysis and the remanders of the pyrolysis increased.

关 键 词：煤 生物质 稻秸秆 热重分析 协同性 

分 类 号：TK6[动力工程及工程热物理—生物能] TK121