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对3种典型生物质原料(针叶材落叶松、阔叶材鹅掌楸及草本植物玉米秸秆)热解油的基本理化性质和化学成分进行了对比研究。理化性质分析表明,3种热解油中玉米秸秆热解油的含水率最高(27.55%),但具有较高的pH值(3.55),较低的固体含量(0.12%,质量分数)及较小的运动黏度(4.93mm2/s)。化学成分分析表明,3种生物质原料热解油化学物质种类相似,均由酚类、酮类、醛类、酸类、糖类和酯类等含氧化合物组成,但相对含量存在一定差别,落叶松和鹅掌楸热解油中含有较多的酚类和酮类,而醇类、酯类物质含量较少,落叶松热解油中醚溶相(酸、醛、酮)和二氯甲烷溶相(酚类)含量最高(分别为23%,20%)。
The basic physical and chemical properties and chemical compositions of three typical biomass raw materials (softwood larch, broadleaf poplar and herbaceous corn stover) were compared. The physico-chemical analysis showed that the corn stover pyrolysis oil had the highest moisture content (27.55%) but higher pH value (3.55), lower solid content (0.12%, mass fraction) Small kinematic viscosity (4.93mm2 / s). The chemical composition analysis showed that the chemical substances of the pyrolysis oil of the three kinds of biomass raw materials are similar in type and consist of the oxygenated compounds such as phenols, ketones, aldehydes, acids, sugars and esters, but the relative contents are different. Larix and Liriodendron pyrolysis oil contains more phenols and ketones, while alcohols, esters less content, larch pyrolysis oil ether phase (acid, aldehyde, ketone) and dichloro Methane had the highest concentration of phenols (23% and 20%, respectively).