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Kinetics of Shenhua coal liquefaction catalyzed by SO_4~(2=)/ZrO_2 solid acid

机译：SO_4〜（2 =）/ ZrO_2固体酸催化神华煤液化动力学

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摘要

Based on the structural inhomogeneities of coal and intermediate products of coal liquefaction, a new kinetic model was advanced to simulate the Shenhua coal liquefaction catalyzed by SO_4~(2=)/ZrO_2 solid acid catalyst using kinetic lump method. It was found that coal was hydrocracked to preasphaltene, asphal-tene, oil and gas directly, and preasphaltene and asphaltene were further hydrocracked into oil and gas products in coal liquefaction. Certain regressive reactions existed in the process. The liquefaction conversions calculated from the model agreed well with the experimental data for Shenhua coal liquefaction catalyzed by SO_4~(2=)/ZrO_2 solid acid at the range of experimental conditions, and the activation energies were 69-136 kJ mol~(-1). There existed obvious regressive reactions at higher liquefaction temperatures. However, besides the regressive transformation of oil and gas to asphaltene at 450 ℃ liquefaction, there also existed condensation processes of preasphaltene and asphaltene to coke.
机译：基于煤和液化中间产物的结构不均匀性，建立了新的动力学模型，以动力学团块法模拟了SO_4〜（2 =）/ ZrO_2固体酸催化剂催化的神华煤液化。发现将煤直接加氢裂化为沥青质，沥青质，石油和天然气，并在煤液化中将沥青质和沥青质进一步加氢裂化为油气产品。在该过程中存在某些回归反应。该模型计算得到的液化转化率与固体条件下SO_4〜（2 =）/ ZrO_2固酸催化的神华煤液化实验数据吻合较好，活化能为69-136 kJ mol〜（-1）。 ）。在较高的液化温度下存在明显的回归反应。但是，除了在450℃的液化作用下，油气逐渐转化为沥青质外，还存在前沥青质和沥青质向焦炭的缩合过程。

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  • 来源
    《Fuel》 |2010年第1期|67-72|共6页
  • 作者

    Hengfu Shui; Zhixiong Chen; Zhicai Wang; Dexiang Zhang;

  • 作者单位

    School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization, Anhui University of Technology, Maanshan 243002, Anhui Province, China;

    School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization, Anhui University of Technology, Maanshan 243002, Anhui Province, China;

    School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization, Anhui University of Technology, Maanshan 243002, Anhui Province, China;

    College of Resource and Environmental Engineering, East China University of Science and Technology, 200273 Shanghai, 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

    coal liquefaction; SO_4~(2=)/ZrO_2 catalyst; kinetics;

    机译：煤液化;SO_4〜（2 =）/ ZrO_2催化剂;动力学;

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