升温速率对小麦秸秆裂解的影响  

Influence of Heating Rate on Pyrolysis of Wheat Straw by Pyrolysis-gas Chromatography/Mass Spectroscopy

作　　者：黄强[1] 薛勇[1] 武海英[1] 欧佳[1] 

机构地区：[1]西南科技大学固体废物处理与资源化省部共建教育部重点实验室,分析测试中心,四川绵阳621010

出　　处：《麦类作物学报》2009年第2期346-350,共5页Journal of Triticeae Crops

基　　金：四川省教育厅重点科研项目(2006A101)

摘　　要：为给小麦秸秆通过生物质热解的资源化利用提供依据,应用裂解-气相色谱质谱(PY-GC/MS)分析技术,通过5150全自动快速裂解仪,对小麦秸秆在20、50和100℃/s速率下升温至900℃时的裂解产物的主要组分及其相对含量进行了分析,按照相对含量降序排列分别确认出前13种化合物。结果显示,在3种升温速率下裂解产物基本相同,主要是烃类含氧有机化合物(包括酚、酮、酐、酯、醛、醇、酸类)和少数不饱和烃类化合物,分别占已鉴定出的总产物的69.931%、72.853%和66.158%。裂解产物中含量最多的均为丁香酚及其同分异构体。随着升温速率的提高,各特征裂解产物的出峰时间明显提前,且不同升温速率下主要组分含量也有所变化。In order to provide information for the resources use of wheat straw pyrolysis, using 5150 fully automatic fast-cracking with gas chromatography-mass spectroscopy（PY-GC/MS）, the pyrolysis product of main component and the comparative content of the wheat straw were analysed under the condition of 20℃/s, 50℃/s, 100℃/s warming to 900℃. According to the relative content in descending order, 13 kinds of compounds were identified. The result showed that under various conditions, the products of main components were almost the same, which were mainly hydrocarbon oxygenated organic compounds （including phenol, ketones, anhydride, esters, aldehydes, alcohol, acid） and a few of unsaturated hydrocarbon compounds, acounted for 69. 931% ,72. 853% ,66. 158% of the total product already identified. The contents of eugenol and its isomers were most the pyrolysis. With the increase of the heating rate, the peak time of the characteristic product of the cracking occured early obviously. And under different heating rate, the main component content also changed. Through analysis of the characteristics of the wheat straw cracking, there were many kinds of important industrial chemicals, and also some toxic decomposition products.

关 键 词：小麦 秸秆 升温速率 热裂解 

分 类 号：S512.1[农业科学—作物学] S216