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棉秆催化热解的TG-MS分析
引用本文:吕博,刘建国,杨鲁斌,姜秀民.棉秆催化热解的TG-MS分析[J].安徽农业科学,2013(26):10785-10787.
作者姓名:吕博  刘建国  杨鲁斌  姜秀民
作者单位:上海交通大学机械与动力工程学院;热能工程研究所;
基金项目:国家自然科学基金(50906051)
摘    要:目的]利用热重-质谱联用(TG-MS)技术,分析了棉秆在催化条件下的热解过程.方法]采用活化热解区与消极热解区法、热解特性指数法,比较了CaO、MgO对棉秆热解的影响,通过质谱分析研究了CaO、MgO对棉秆热解过程中焦油组分析出的影响.结果]CaO、MgO对棉秆的活化区和消极区均有催化作用,且CaO、MgO对棉秆的挥发分析出特性具有改善作用;棉秆热解产生的焦油组分主要为苯、甲苯、苯酚,CaO、MgO的加入使焦油组分的析出温度范围变窄、离子强度下降.结论]该研究为棉杆的催化热解研究提供了科学参考.

关 键 词:生物质  催化热解  热重分析  质谱分析

Catalytic Pyrolysis of Cotton Stalk with TG-MS Analyzer
Institution:LV Bo(Institute of Thermal Energy Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240)
Abstract:Objective] Catalytic pyrolysis characteristics of cotton stalk were studied with TG-MS analyzer.Method] By using the active and passive zone as well as pyrolysis index,the influences of CaO and MgO on the pyrolysis characteristics and the tar evolution during the heating processes were discussed.Result] CoO and MgO had catalytic effects on both the active and passive pyrolysis zone of cotton stalk; CaO and MgO promoted the precipitation of the volatiles ; the mass spectrometry analysis showed that the main components of tar were benzene,toluene and phenol; CaO and MgO narrowed the temperature range of the tar precipitation and reduced the peak values of the tar components.Conclusion] The research could provide scientific references for the catalytic pyrolysis of cotton stalk in future.
Keywords:Biomass  Catalytic pyrolysis  Thermogravimetric analysis  Mass spectrometry analysis
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