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首页> 外文期刊>Energy Conversion & Management >Pyrolysis study of waste cable hose with thermogravimetry/Fourier transform infrared/mass spectrometry analysis
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Pyrolysis study of waste cable hose with thermogravimetry/Fourier transform infrared/mass spectrometry analysis

机译：热重分析/傅里叶变换红外/质谱分析热解废旧电缆软管

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摘要

Pyrolysis is considered as a promising method to recycle waste rubber material for fuel or chemical feedstock. In the present study, pyrolysis of one kind of typical waste cable hose with major composition of flame-retardant ethylene-propylene-diene monomer (EPDM) rubber is studied in inert atmosphere. Thermogravimetric analysis (TGA), in situ Fourier transform infrared (FTIR) and online TGA-FTIR-mass spectra (MS) analyses are employed. The activation energy and reaction mechanism are obtained employing three popular model-free methods and one typical model-fining method. Results indicate that the pyrolysis of waste cable hose in inert atmosphere may be divided into three stages, wherein the aluminum hydroxide and magnesium hydroxide decompose at the first two stages and the decomposition of EPDM rubber and decabromodiphenyl ethane occurs in the third stage. The heating rate has little effect on the quantity of mass loss or conversion. The activation energy increases considerably in the first two stages, but remains almost constant in the third stage. The average values of the activation energy in the first, second and third stage are 130.81, 171.55 and 205.61 kJ/mol, respectively. It is also found that the 2-D diffusion model g (alpha) = (1-alpha)ln(1-alpha) + alpha may be the most suitable model to characterize the pyrolysis in the third stage and diffusion may be in charge of the pyrolysis in the third stage. Furthermore, volatile products including H2O, aliphatic compounds, CO2 and aromatic compounds mainly appear in the third stage. The specific gas species included in the aliphatic and aromatic compounds are presented. The maximum amount of the four volatile products in the order of most to least is aliphatic compounds > H2O or aromatic compounds > CO2. In particular, the maximum amount of aliphatic compounds outdistances that of the other three volatile products, which is extraordinarily useful for the recovery of waste cable hose for valuable gases either as fuel or chemical feedstock.
机译：热解被认为是回收废橡胶材料以用作燃料或化学原料的有前途的方法。在本研究中，研究了一种在惰性气氛下热解一种主要成分为阻燃乙烯-丙烯-二烯单体（EPDM）橡胶的典型废电缆。使用热重分析（TGA），原位傅立叶变换红外（FTIR）和在线TGA-FTIR质谱（MS）分析。活化能和反应机理是通过三种流行的无模型方法和一种典型的模型求精方法获得的。结果表明，废弃电缆软管在惰性气氛下的热解可分为三个阶段，其中氢氧化铝和氢氧化镁在前两个阶段分解，EPDM橡胶和十溴二苯乙烷的分解在第三阶段发生。加热速率对质量损失或转化的量影响很小。活化能在前两个阶段显着增加，但在第三阶段几乎保持恒定。在第一，第二和第三阶段中的活化能的平均值分别为130.81、171.55和205.61kJ / mol。还发现2-D扩散模型gα=（1-αln）ln（1-α）+α可能是表征第三阶段热解的最合适模型，扩散可能负责第三阶段的热解。此外，包括水，脂肪族化合物，二氧化碳和芳香族化合物在内的挥发性产物主要出现在第三阶段。提出了包括在脂族和芳族化合物中的特定气体种类。四种挥发性产物的最大量按最大顺序排列为脂族化合物> H2O或芳族化合物> CO2。特别是，脂族化合物的最大数量超过了其他三种挥发性产品的数量，这对于回收废电缆软管以回收作为燃料或化学原料的有价值气体特别有用。

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  • 来源
    《Energy Conversion & Management》 |2017年第12期|83-92|共10页
  • 作者

    Chen Ruiyu; Lu Shouxiang; Zhang Yang; Lo Siuming;

  • 作者单位

    Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China|Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230027, Anhui, Peoples R China|City Univ Hong Kong, Dept Civil & Architectural Engn, Kowloon 999077, Hong Kong, Peoples R China;

    Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230027, Anhui, Peoples R China;

    Nanjing Univ Sci & Technol, Sch Sci, Nanjing 210094, Jiangsu, Peoples R China;

    City Univ Hong Kong, Dept Civil & Architectural Engn, Kowloon 999077, Hong Kong, 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

    Pyrolysis; Waste cable hose; Recycling; EPDM rubber; Thermogravimetric analysis; TGA-FTIR-MS;

    机译：热解;废电缆软管;回收;EPDM橡胶;热重分析;TGA-FTIR-MS;

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