农作物秸秆快速热解生物油主要成分分析

Analysis of Main Components in Fast Pyrolysis Bio-oil from Crop Straws

采用自行研发的真空快速热解反应平台对棉秆、玉米秸秆和稻草秆进行了快速热解,并用气质联用(GC-MS)分析法分别对3种秸秆快速热解液相产物的化学组分进行了测定。实验结果表明:棉秆、玉米秸秆和稻草秆3种热解油中酚类GC含量分别为24.34%、21.21%和17.22%,酸类GC含量分别为14.78%、13.95%和16.69%;不同种类秸秆其热解液化产物在组分及含量上存在一定差别,但其成分均以苯酚类、醛类、酮类、有机酸类等化合物为主,且含量差异不大,其中玉米秸秆和棉秆各类化合物含量差异相对较小,因此,生产中可以将成分类似却不同种类的原料混合热解。

The platform of self-developed vacuum fast pyrolysis system was used for fast pryrolysis reaction of corn straw, rice straws and cotton straws. GC-MS was used to analyze the products of three different kinds of feedstock. The results show that the content of phenol in cotton stalk, corn straw and straw stem are 24.34 %, 21.21% and 17.22 %, and the content of acid are 14.78 % , 13.95 % and 16.69 % , respectively. The hio-oils from different kinds of straw have certain differences in compounds and contents, but main components are base on phenols, aldehydes, ketones and organic acids etc. The content is similar, and especially the differences between corn straw and cotton stalk are the smallest. Therefore, the different types of materials which have similar components can be mixed in practical product.