...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Kinetic study of steam catalytic cracking of naphtha on a Fe/ZSM-5 catalyst
【24h】

Kinetic study of steam catalytic cracking of naphtha on a Fe/ZSM-5 catalyst

机译：Fe / ZSM-5催化剂上石脑油蒸汽催化裂化的动力学研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new six-lump kinetic model is proposed to describe the naphtha steam catalytic cracking on a Fe/ZSM-5 catalyst. The kinetic model contains 20 kinetic parameters and one for catalyst deactivation. The catalyst deactivation model was described by an exponential function depending on time-on-stream. Rate constants of the kinetic model were estimated by the least square regression analysis of the experimental data, obtained in a fixed bed reactor at temperatures of 620, 650 and 680 ℃. Pre-exponential factors and apparent activation energies were then calculated according to the Arrhenius equation. The simulated results illustrate that the six-lump kinetic model can well predict the product yields of naphtha steam catalytic cracking. Ethylene yield increases with the reaction temperature, while the yields of propylene and overall light olefins pass through maxima. The predicted results indicate that steam catalytic cracking of naphtha is better to be conducted at high temperature and short residence time of feedstock.
机译：提出了一个新的六集总动力学模型来描述在Fe / ZSM-5催化剂上石脑油蒸汽催化裂化。动力学模型包含20个动力学参数和一个催化剂失活参数。催化剂失活模型由取决于运行时间的指数函数描述。通过在固定床反应器中在620、650和680℃下获得的实验数据的最小二乘回归分析来估计动力学模型的速率常数。然后根据Arrhenius方程计算出指数前因子和表观活化能。仿真结果表明，六团块动力学模型可以很好地预测石脑油蒸汽催化裂化的产物收率。乙烯的产率随反应温度而增加，而丙烯和全部轻质烯烃的产率最大。预测结果表明，石脑油的蒸汽催化裂化最好在高温下和短的原料停留时间下进行。

著录项

  • 来源
    《Fuel》 |2013年第7期|432-438|共7页
  • 作者

    Mehdi Sedighi; Kamyar Keyvanloo; Jafar Towfighi;

  • 作者单位

    Department of Chemical Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Iran;

    Department of Chemical Engineering, Brigham Young University, Provo, UT 84602, United States;

    Department of Chemical Engineering, Tarbiat Modares University, P.O. Box 14115-143, 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

    Kinetic modeling; Lump; Naphtha steam catalytic cracking;

    机译：动力学建模;块;石脑油蒸汽催化裂化;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号