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首页> 外文期刊>Fuel >Chemical characteristics of oil-like products from hydrous pyrolysis of scrap tires at temperatures from 150 to 400 ℃
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Chemical characteristics of oil-like products from hydrous pyrolysis of scrap tires at temperatures from 150 to 400 ℃

机译:150至400℃温度下废轮胎的水热解油状产品的化学特性。

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摘要

Scrap tire waste consists of organic matter that is often commonly disposed in landfills, ultimately causing an environmental problem. Different pyrolysis techniques have been used to convert biomass into potential fuel products. Pyrolysis is considered a useful method for recycling scrap tires. These hydrous pyrolysis experiments were conducted to test the effects of water on product composition and yield from scrap tire rubber. The chemical compound compositions of the alteration products from two different pyrolysis conditions have been determined by gas chromatography-mass spectrometry. Two sets of experiments were conducted at temperatures ranging from 150 to 400 ℃ with contact periods of 48 h. The reaction mixtures of the first set included only shredded scrap tire rubber and water, whereas the second set also contained oxalic acid to provide excess hydrogen to enhance reduction of rubber pyrol-ysate. The yields of the total alteration products increased with temperature both in the presence and absence of oxalic acid, and were higher with oxalic acid. Hydrocarbon concentrations increased in the temperature range of 250-350 ℃ for both experiment sets and decreased noticeably at 400 ℃ due to cracking processes. The products confirm that alteration of scrap tire rubber in aqueous medium occurs rapidly and efficiently under reductive pyrolysis conditions above 150 ℃. At temperatures above 350 ℃ cracking of organic products was the dominant reaction, and polycyclic aromatic hydrocarbons (PAHs) were the major products.
机译:废轮胎废料通常由有机物组成,这些有机物通常在垃圾填埋场处置,最终导致环境问题。已经使用不同的热解技术将生物质转化成潜在的燃料产品。热解被认为是回收废轮胎的有用方法。进行这些含水热解实验以测试水对废轮胎橡胶的产品组成和收率的影响。通过气相色谱-质谱法已经确定了来自两种不同热解条件的改变产物的化合物组成。在150至400℃的温度下进行了两组实验,接触时间为48小时。第一组的反应混合物仅包括切碎的废轮胎橡胶和水,而第二组的反应混合物还包含草酸以提供过量的氢气以增强橡胶吡咯-裂解物的还原。在存在和不存在草酸的情况下,总改变产物的产率均随温度升高,而在草酸中则更高。在两个实验组中,烃浓度在250-350℃的温度范围内都会增加,而在400℃时,由于裂解过程会显着降低。产品证实,在150℃以上的还原热解条件下,废轮胎橡胶在水性介质中的变化迅速而有效。在高于350℃的温度下,有机产物的裂解是主要反应,多环芳烃(PAHs)是主要产物。

著录项

  • 来源
    《Fuel》 |2013年第5期|578-584|共7页
  • 作者单位

    Chair of Green Energy Research and Plant Protection Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11457, Saudi Arabia,College of Earth, Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA,Department of Earth and Environmental Sciences, Faculty of Sciences, Sana'a University, Sana'a, Yemen;

    Chair of Green Energy Research and Plant Protection Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11457, Saudi Arabia;

    College of Earth, Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA;

    Chair of Green Energy Research and Plant Protection Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11457, Saudi Arabia;

    Chair of Green Energy Research and Plant Protection Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11457, Saudi Arabia,Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA;

  • 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

    hydrous pyrolysis; waste tire; tire pyrolysis; hydrocarbons; UCM;

    机译:含水热解废轮胎轮胎热解碳氢化合物联合会;

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