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回转窑转速对废塑料热解产物特性的影响

DOI: 10.13334/j.0258-8013.pcsee.2014.23.016, PP. 3952-3958

Keywords: 废塑料,回转窑,转速,热解,产物特性

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Abstract:

在外热式回转窑热解实验台上,以废塑料聚丙烯(polypropylene,PP)、聚乙烯(polyethylene,PE)为实验物料,在不同转速下对热解产物的特性进行了实验研究。实验结果表明：从提高产油率角度来讲,该实验转速以4r/min为适宜,并且转速对PP和PE热解油的热值有一定的影响。转速对PP和PE的热解残炭的产率影响不大,转速对其热值影响比较大,在实验转速范围内PP的残炭热值最大增幅为31.5%,PE残炭的热值的最大增幅高达116.1%。PP和PE热解气的热值随转速的变化趋势与热解气中C3、C4和C5的烃类含量变化趋势相同。在一定转速范围内,增大转速有利于油的轻质化。转速对PP热解气成分的影响并不大,而转速对PE热解气中低碳成分和高碳成分的比例影响较大,在4r/min时低碳气体成分的含量最低,高碳气体成分的含量最高。

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