QQ客服 官方微博 反馈留言

	玉米秸秆颗粒热解活化过程的热力学和动力学研究
	贾少刚 ; 王翠苹 ; 吕子安 ; 李定凯 ; JIA Shao-gang ; WANG Cui-ping ; LV Zi-an ; LI Ding-kai
	2010-06-08 ; 2010-06-08
关键词	热重分析 秸秆颗粒 热解 活化 thermogravimetry stalk pellets pyrolysis activation TQ424.1
其他题名	Research on Thermodynamics and Kinetics of Pyrolysis and Activation Processes of Corn Stalk Pellet
中文摘要	利用热重分析研究了玉米秸秆颗粒制备活性炭的热解和活化过程。热解采用氮气为保护气体,升温速率5 K/min,终温723 K,恒温时间30 min。热解过程主要发生在450~620 K之间,热解炭材微孔结构和机械强度良好。活化采用CO2为活化剂,升温速率10 K/min,终温1 073 K,恒温时间20 min,活化反应主要发生在950~1 070 K之间,得到的活性炭具有较大的比表面积(404.6 m2/g)和优良的吸附性能。通过对热解和活化过程的热重及差热变化综合分析,确定了两段热化学反应的活化能和频率因子,了解了热解和活化过程的热力学和动力学特性,为制备优质的生物质颗粒活性炭提供理论指导作用。; The processes of pyrolysis and activation of corn stalk pellets for the activated carbon production were studied by thermogravimetry.The pyrolysis conditions were: nitrogen as shield gas,temperature rate 5 K/min,final temperature 723 K and thermostatic time 30 min.The process of pyrolysis occured primarily between 450-620 K,the microcellular structure and mechanical strength of pyrolysis char were good.The activation conditions were: carbon dioxide as shield gas,temperature rate 10 K/min,final temperature 1 073 K and thermostatic time 20 min.The process of activation occured primarily between 950-1 070 K,the obtained activated carbon has high specific surface(404.6 m2/g) and excellent adsorption abilities.The activation energy and frequency factor parameters were determined by analysis of the thermogravimetric and differential thermal charac-teristics of the pyrolysis and activation processes.The thermodynamic and kinetic characteristics of pyrolysis and activation processes were concluded.It will provide theoretical guide to the production of better biomass activated carbon pellets.; 国家973计划资助(2006CB200305-5)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/50232]
专题	清华大学
推荐引用方式 GB/T 7714	贾少刚,王翠苹,吕子安,等. 玉米秸秆颗粒热解活化过程的热力学和动力学研究[J],2010, 2010.
APA	贾少刚.,王翠苹.,吕子安.,李定凯.,JIA Shao-gang.,...&LI Ding-kai.(2010).玉米秸秆颗粒热解活化过程的热力学和动力学研究..
MLA	贾少刚,et al."玉米秸秆颗粒热解活化过程的热力学和动力学研究".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。