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Effect of volatile reactions on oil production and composition in thermal and catalytic pyrolysis of polyethylene

机译：挥发反应对聚乙烯热催化热解中油生产和组成的影响

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摘要

The volatiles generated from the pyrolysis of waste plastics undergo chemical reactions before being catalyzed to produce the plastic-derived oil. To reveal the relation between the oil properties and the volatile reactions, thermal and catalytic pyrolysis of polyethylene - a main component in waste plastics - were studied at volatilization temperatures of 300-600 degrees C with a volatilization time of 17.7-53.0 s in a two-stage reactor. The yield and composition of the oil in both thermal and catalytic reactions were investigated. It was found that in thermal pyrolysis, a high volatilization temperature favors the cracking of volatiles, resulting in the decline of carbon chain length and the decrease of the oil yield. Extension of the volatilization time favors the formation of light oil at a volatilization temperature above 400 degrees C, but produce more long-chain fractions at a volatilization temperature of 300 degrees C. The carbon number distribution of the oil after catalysis is independent on the conditions for volatile reactions, but the yields of the oil and each fraction after catalysis are higher at a lower volatilization temperature and shorter volatilization time. The long-chain alkenes in the volatiles is responsible for the formation of the coke deposited on catalyst.
机译：从废塑料的热解产生的挥发物在催化之前经历化学反应，以产生塑料衍生的油。为了揭示油性质与挥发性反应之间的关系，聚乙烯的热和催化热解 - 在300-600摄氏度的挥发温度下研究了废塑料中的主要成分，在两组中的挥发时间为17.7-53.0 -stage反应器。研究了热和催化反应中的油的产量和组成。发现，在热热解中，高挥发温度有利于挥发物的破裂，导致碳链长度的下降和油产量的降低。促进挥发时间的促进促进在400摄氏度高于400℃的挥发温度下的轻油，但在300℃的挥发温度下产生更多的长链级分。催化后油的碳数分布是独立于条件的对于挥发性反应，但催化在催化温度下较低挥发温度和较短的挥发时间后，油的产率和每馏分的产率较高。挥发物中的长链烯烃负责在催化剂上沉积的焦炭形成。

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  • 来源
    《Fuel》 |2020年第jul1期|117308.1-117308.8|共8页
  • 作者

    Chen Zezhou; Zhang Xurui; Che Lei; Peng Huanghu; Zhu Shouxin; Yang Fan; Zhang Xu;

  • 作者单位

    Huzhou Univ Coll Engn Huzhou 313000 Peoples R China;

    Univ British Columbia Dept Chem & Biol Engn Vancouver BC V6T 1Z4 Canada;

    Huzhou Univ Coll Engn Huzhou 313000 Peoples R China;

    Huzhou Univ Coll Engn Huzhou 313000 Peoples R China;

    Huzhou Univ Coll Engn Huzhou 313000 Peoples R China;

    Huzhou Univ Coll Engn Huzhou 313000 Peoples R China;

    Huzhou Univ Coll Engn Huzhou 313000 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Plastic-to-oil; Pyrolysis; Volatile reactions; Carbon number distribution; HY zeolite;

    机译：塑料 - 油;热解;挥发性反应;碳数分布;Hy沸石;

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