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首页> 外文期刊>Environmental Science & Technology >Preparation of Low Toxicity Pitches by Thermal Oxidative Condensation of Anthracene Oil
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Preparation of Low Toxicity Pitches by Thermal Oxidative Condensation of Anthracene Oil

机译：蒽油的热氧化冷凝法制备低毒沥青

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摘要

This article describes a novel industrial procedure for producing new pitches of low toxicity from anthracene oil, a byproduct of coal tar distillation. The procedure involves oxidative treatment in order to polymerize and condense the anthracene oil components followed by thermal treatment and distillation in order to obtain a pitch with the desired parameters. This sequence (oxidative treatment/thermal treatment/distillation) was repeated fourtimes under reaction conditions of increasing severity in four cycles of anthracene oil processing to obtain the four pitches. The pitches had similar characteristics to those of standard binder coal tar pitches (e.g., softening point and wetting capacity). Because of the inherent composition of the parent anthracene oil, the pitches were found to be totally free of solid particles, i.e., primary quinoline insolubles and metals. The gas chromatography and gas chromatography/ mass spectroscopy results revealed a consecutive decrease in toxicity with successive cycles of anthracene oil processing. Thus, the benzo[a]pyrene content decreased from 11.2 mg/g for the pitch in cycle one to 1.5 mg/g for the pitch with four processing cycles. The carcinogenicity of the pitches, evaluated on the basis of benzo[a]pyrene toxic equivalency factors, also followed the same tendency. The final carcinogenity values are nearly all lower than those of standard binder coal tar pitches.
机译：本文介绍了一种新的工业流程，该流程可从煤焦油蒸馏的副产品蒽油生产新的低毒沥青。该过程包括氧化处理，以使蒽油成分聚合和缩合，然后进行热处理和蒸馏，以获得具有所需参数的沥青。在蒽油加工的四个循环中，在强度增加的反应条件下，将该顺序（氧化处理/热处理/蒸馏）重复四次，得到四个沥青。沥青具有与标准粘结剂煤焦油沥青相似的特性（例如，软化点和润湿能力）。由于母体蒽油的固有组成，发现沥青完全不含固体颗粒，即主要的喹啉不溶物和金属。气相色谱和气相色谱/质谱分析结果表明，蒽油加工的连续循环会导致毒性连续降低。因此，在四个处理循环中，苯并[a] py的含量从第一周期沥青的11.2 mg / g降至1.5 mg / g。根据苯并[a] py毒性当量因子评估的沥青的致癌性也遵循相同的趋势。最终致癌性值几乎都低于标准粘结剂煤焦油沥青的致癌性值。

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  • 来源
    《Environmental Science & Technology》 |2009年第21期|8126-8132|共7页
  • 作者

    PATRICIA ALVAREZ; MARCOS GRANDA; JUAN SUTIL; RICARDO SANTAMARIA; CLARA BLANCO; ROSA MENENDEZ; JUAN JOSE FERNANDEZ; JOSE ANTONIO VINA;

  • 作者单位

    Instituto National del Carbon, CSIC, P.O. Box 73, 33080-Oviedo, Spain;

    Instituto National del Carbon, CSIC, P.O. Box 73, 33080-Oviedo, Spain;

    Instituto National del Carbon, CSIC, P.O. Box 73, 33080-Oviedo, Spain;

    Instituto National del Carbon, CSIC, P.O. Box 73, 33080-Oviedo, Spain;

    Instituto National del Carbon, CSIC, P.O. Box 73, 33080-Oviedo, Spain;

    Instituto National del Carbon, CSIC, P.O. Box 73, 33080-Oviedo, Spain;

    Industrial Quimica del Nalon, S.A., Avda, Galicia 31, 33005-Oviedo, Spain;

    Industrial Quimica del Nalon, S.A., Avda, Galicia 31, 33005-Oviedo, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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