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Effect of pre-devulcanization and temperature on physical and chemical properties of waste tire pyrolytic oil residue

机译：预脱硫和温度对废轮胎热解油残渣理化特性的影响

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摘要

The effect of pre-devulcanization and temperature in waste tire pyrolysis are investigated on pyrolysis time, yield and properties of residual Heavy Fraction Pyrolytic Oil (HFPO). A comparative pyrolysis of usual Ground Tire Rubber (GTR) and a commercial devulcanized ground tire rubber, (known as Reclaim Rubber-RR) is performed in a static-bed batch reactor at 400-600 ℃ and the oil is distillated to light and heavy fractions. Chemical composition studies show higher amounts of aromatics in HFPO than light fraction. As a novel approach, a relationship between isotherm at max temperature and pyrolysis temperature is presented in this work. Pyrolysis time for RR is approximately half of GTR at same temperatures due to RR devulcanized nature. The solid yield is larger for GTR than RR and decreases by temperature. The liquid yield for RR is larger than GTR. Pyrolysis time and liquid yields of GTR and RR approach to each other at higher temperatures. Kinematic viscosity and flash point are larger for GTR oils in comparison with RR. FTIR shows by increasing temperature the ratio of alkanes/aromatic (I_(2952)/I_(1456)) decreased for HR and increased for HG. So it can be said that both oil contain similar functional groups at different concentrations depending on temperature. ~1H NMR and ~(13)C NMR spectra shows oils are a mixture of aromatics, alkanes, alkenes, alkynes and ethers or alcohols, which exist in different concentrations. Gel Permeation Chromatography (GPC) shows that pyrolysis of GTR produces oil which is heavier and broader in Mw distribution in comparison with pre-devulcanized sample (RR). Elemental analysis shows similar elemental composition of HFPOs.
机译：研究了废轮胎热解过程中的预脱硫和温度对热解时间，产率和残余重质馏分热解油（HFPO）性能的影响。在静态床间歇式反应器中于400-600℃进行常规地面轮胎橡胶（GTR）和市售脱硫地面轮胎橡胶（称为Reclaim Rubber-RR）的比较热解，并将油蒸馏为轻质和重质分数。化学成分研究表明，HFPO中的芳族化合物含量高于轻质组分。作为一种新颖的方法，本文提出了最高温度下的等温线与热解温度之间的关系。由于RR脱硫的性质，RR在相同温度下的热解时间约为GTR的一半。 GTR的固体收率大于RR，并且随温度降低。 RR的液体产率大于GTR。 GTR和RR的热解时间和液体产率在较高温度下彼此接近。与RR相比，GTR油的运动粘度和闪点更大。 FTIR显示，通过提高温度，HR的烷烃/芳烃比（I_（2952）/ I_（1456））降低，而HG升高。因此，可以说两种油根据温度在不同浓度下都包含相似的官能团。 〜1 H NMR和〜（13）C NMR光谱显示，油是芳族化合物，烷烃，烯烃，炔烃和醚或醇的混合物，它们以不同的浓度存在。凝胶渗透色谱法（GPC）显示，与预硫化样品（RR）相比，GTR的热解产生的油的Mw分布更重，更宽。元素分析显示HFPO的元素组成相似。

著录项

  • 来源
    《Fuel》 |2013年第10期|319-325|共7页
  • 作者

    Abbas Kebritchi; Hasan Firoozifar; Kayghobad Shams; Azam Jalali-Arani;

  • 作者单位

    Chemical Engineering Department, Isfahan University of Technology, P.O. Box 19368/55913, Isfahan, Iran;

    Research and Development Center, Pasargad Oil Company, Tehran, Iran;

    Chemical Engineering Department, Isfahan University of Technology, P.O. Box 19368/55913, Isfahan, Iran;

    Polymer Engineering and Color Science Department, Amirkabir University of Technology, Tehran, Iran;

  • 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

    Vacuum pyrolysis; Scrap tire; Static bed reactor; Pre-devulcanization; Pyrolytic oil residue;

    机译：真空热解;废轮胎;静态床反应器;预脱硫;热解渣油;

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