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在喷动流化床中进行了900℃下樟子松锯末的气化试验,利用凝胶渗透色谱结合二极管阵列检测器(GPC-PDA)以及气质联用分析技术,对不同氧气比下气化所得焦油的性质进行了分析.结果表明:在较高的生物质气化温度下,只增大氧气比能使焦油的产率降低,但并不能使全部焦油裂解,且不会改变气化焦油的相对分子质量及其分布,焦油中主要化合物的结构特征也没有改变,改变的是不同化合物的相对含量;气化焦油具有芳香特性,结构主要以带和不带支链的芳香烃化合物以及含氧的极性小分子化合物为主.
Gasification of Pinus sylvestris var. Mongolica at 900 ℃ was carried out in a spouted fluidized bed. Gas chromatography was performed using gel permeation chromatography coupled with a diode array detector (GPC-PDA) and gas chromatography-mass spectrometry (GC-MS) The results show that only increasing the oxygen ratio can lower the yield of tar at higher biomass gasification temperatures, but it does not result in the complete tar cracking and does not change the gasification tar Relative molecular mass and its distribution, the structural characteristics of the main compounds in the tar have not changed, the change is the relative content of different compounds; gasified tar has aromatic properties, the structure mainly with and without branched aromatic compounds and containing Oxygen-based small molecule compounds.