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Tertiary polymer recycling study of polyethylene thermolysis as a first step to synthetic diesel fuel

机译：聚乙烯热解作为合成柴油第一步的三次聚合物回收研究

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High density polyethylene (HDPE) thermolysis and polyethylene derived oil hydrogenation were studied as two steps of a novel process to convert waste polyethylene (PE) into a hydrocarbon liquid suitable for use as diesel fuel. This report is focused on the thermolysis of PE. The effects of reaction conditions on reaction rate as well as on the physical and chemical properties of the products were examined. Thermolysis products consisted of liquids (PE oil), polymer residue and gas. The liquid product composition was 80-90 wt./100 straight chain alkanes and 1-alkenes. Semi-batch reactor thermolysis rates were found to be in good agreement with a theoretical model from the literature. The kinetics of formation of light C_6-C_(11), medium C_(12)-C_(16) and heavy C_(17)-C_(20) n-alkane and 1-alkene product fractions from HDPE thermolysis were determined in the temperature range of 400-440 deg C. Subsequent hydrogenation of the PE oil resulted in a diesel fuel with a high cetane index and low sulphur and aromatic content.
机译：高密度聚乙烯（HDPE）热解和聚乙烯衍生的油氢化研究是将废聚乙烯（PE）转化为适合用作柴油燃料的烃类液体的新工艺的两个步骤。该报告的重点是PE的热解。检查了反应条件对反应速率以及产物的物理和化学性质的影响。热解产物由液体（PE油），聚合物残留物和气体组成。液体产物组合物是80-90重量％/ 100个直链烷烃和1-烯烃。发现半间歇反应器的热解速率与文献中的理论模型非常吻合。在HDPE热解过程中确定了形成轻质C_6-C_（11），中质C_（12）-C_（16）和重质C_（17）-C_（20）正烷烃和1-烯烃产物馏分的动力学。温度范围为400-440摄氏度。PE油的后续氢化产生了十六烷值高，硫和芳烃含量低的柴油。

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