采用热重与红外光谱联用研究玉米秸秆热解  

Study of the Pyrolysis of Corn Stalk by Combining the Thermogravimetric Method with the Infrared Spectrum One

作　　者：徐砚[1] 朱群益[2] 宋绍国 

机构地区：[1]哈尔滨电力职业技术学院动力工程系,黑龙江哈尔滨150030 [2]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001 [3]黑龙江省火电第三工程公司,黑龙江哈尔滨150016

出　　处：《热能动力工程》2012年第1期126-129,142,共4页Journal of Engineering for Thermal Energy and Power

摘　　要：采用热重与红外光谱联用技术(TG—FTIR),在升温速率为20℃/min下,对玉米秸秆各部分(秸秆皮、秸秆瓤、叶子及苞叶)的热解产物及析出过程进行了实验研究。实验结果表明,玉米秸秆各部分的热解产物主要为CO2、CO、CH4、H2O,同时含有少量的丙酸类物质;秸秆皮和秸秆瓤热解气体的析出呈单峰形状,而叶子和苞叶热解气体的析出呈双峰形状;玉米秸秆各部分的热解最大失重率对应的热解温度约为360～371℃,相差较小;对玉米秸秆的同一部分,主要热解产物的最大失重率对应的热解温度基本相同。By using the thermogravimetric and Fourier Transform Infrared Spectroscopy combined technology(TG-FTIR),at a temperature rise speed of 20 ℃/min,experimentally studied were the pyrolytic products of various parts of the corn straw stalk(including straw stalk husk,straw stalk flesh,leaves and bracts) and their precipitation processes.The test results show that the pyrolytic products of various parts of the corn straw stalk are mainly CO2,CO,CH4 and H2O etc.and in the meantime,involve substances such as propionic acid and its kind in a small amount.The precipitation of the pyrolytic gases from straw stalk husk and flesh assumes a single-peak shape and those from the leaves and bracts take on a dual-peak shape.The pyrolytic temperature corresponding to the maximal weight loss rate resulting from the pyrolysis of various parts of the corn straw stalk is around 360-371℃,having a smallest difference.For a same part of the corn straw stalk,the pyrolytic temperatures corresponding to the maximal weight loss rate resulting from the main pyrolytic products are basically identical.

关 键 词：热重分析 傅里叶红外光谱 玉米秸秆 热解 

分 类 号：TK62[动力工程及工程热物理—生物能]