熔融盐热解法回收塑料废弃物的价值

Conservation & Recycling Pub Date : 1987-01-01 DOI:10.1016/0361-3658(87)90064-6

Gerard E. Bertolini , Jacques Fontaine

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引用次数: 29

摘要

低温(420°-480°C)热解使气态组分降到最低，从而获得具有高经济价值的液体和固体组分;这些包括轻质油、芳烃、石蜡和单体。熔融盐具有优良的传热性能，是快速规律热解(反应动力学问题)的有趣介质;共晶已被选定。含氯塑料也几乎完全脱氯(使用在此过程中消耗的碱性盐)。给出了聚乙烯、聚丙烯、聚苯乙烯和聚氯乙烯的室内试验结果。考虑到实验的结论和可能的经济应用，讨论了与工业阶段有关的进一步发展。

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Value recovery from plastics waste by pyrolysis in molten salts

A low temperature (420°–480°C) of pyrolysis minimises the gaseous fraction, and allows liquid and solid fractions of high economic value to be obtained; these include light oils, aromatics, paraffin waxes and monomers.

Molten salts, with their excellent heat transfer properties, are interesting media for rapid and regular pyrolysis (problem of reaction kinetics); a eutectic has been selected. Chlorine-containing plastics are also dechlorinated almost completely (using basic salts, which are consumed in the process).

The results of laboratory tests on polyethylene, polypropylene, polystyrene and polyvinyl chloride are given.

Considering the conclusions of the experiments and the possible economic applications, further developments relating to an industrial stage are discussed.

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