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基于TG-FTIR分析的稻壳热解特性实验
  • ISSN号:2095-5553
  • 期刊名称:《中国农机化学报》
  • 时间:0
  • 分类:TK6[动力工程及工程热物理—生物能]
  • 作者机构:东北电力大学能源与动力工程学院,吉林吉林132012
  • 相关基金:东北电力大学博士科研启动基金(BSJXM-201309)
中文摘要:

在热重分析仪上研究稻壳不同升温速率(20℃/min,40℃/min,100℃/min)下的热解过程,并运用热重—红外光谱联用技术(TG-FTIR)对稻壳热解过程中气相产物随温度变化的释放规律进行实验研究。结果表明:升温速率越高,热解反应的温度区间越大,热解过程各阶段的起始和终止温度均向高温侧移动;当升温速率为20℃/min时,热解最充分,挥发分析出量最多;热解气态产物主要为CO+2、CO、CH+4和H+2O等小分子气体,不同热解阶段气体析出量差别很大,这与DTG曲线变化规律相吻合。热解不同产物的析出特性由稻壳内部官能团重组、断裂引起。运用Coats-Redfern法对稻壳热解行为进行动力学分析,结果表明升温速率增加,热解活化能逐渐减小,有利于热解的进行,其表观活化能在70~95kJ/mol范围内变化。

英文摘要:

The pyrolysis process of rice husk was studied in a thermo gravimetric analysis instrument under the different heating rate(20℃/min,40℃/min,100℃/min),and the on line TG-FTIR technology was used to analyze the release of gas products varies with temperature.The results show that the higher the heating rate was,the greater the temperature range of pyrolysis reaction,each stage of beginning and ending temperature pyrolysis process were moving to the high temperature side.When the heating rate of20℃/min,pyrolysis fullest,most volatile measure analysis.Pyrolysis gas products mainly for CO_2,CO,CH_4 and H_2O and other small molecule gas,different stages of pyrolysis gas evolution volume difference is very big,this in conformity with the DTG curve change rule.Pyrolysis products of different precipitation characteristics caused by rice husk internal functional group restructuring and fracture.Using the Coats-Redfern method has carried on the dynamic analysis of rice husk pyrolysis behavior,the results show that the higher the heating rate was,the thermal decomposition activation energy decreases,it is advantage to the pyrolysis,the apparent activation energy changed in 70~95kJ/mol.

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期刊信息
  • 《中国农机化学报》
  • 北大核心期刊(2011版)
  • 主管单位:中华人民共和国农业部
  • 主办单位:农业部南京农业机械化研究所
  • 主编:曹曙明
  • 地址:南京市玄武区中山门外柳营100号
  • 邮编:210014
  • 邮箱:jcam@vip.163.com
  • 电话:025-84346270 84346271传
  • 国际标准刊号:ISSN:2095-5553
  • 国内统一刊号:ISSN:32-1837/S
  • 邮发代号:28-116
  • 获奖情况:
  • 国内外数据库收录:
  • 中国北大核心期刊(2008版),中国北大核心期刊(2011版)
  • 被引量:2361