• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>The Scientific World Journal >Evaluation of the Parameters and Conditions of Process in the Ethylbenzene Dehydrogenation with Application of Permselective Membranes to Enhance Styrene Yield
【2h】

Evaluation of the Parameters and Conditions of Process in the Ethylbenzene Dehydrogenation with Application of Permselective Membranes to Enhance Styrene Yield

机译：应用选择性渗透膜提高苯乙烯收率评价乙苯脱氢工艺参数和条件

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Styrene is an important monomer in the manufacture of thermoplastic. Most of it is produced by the catalytic dehydrogenation of ethylbenzene. In this process that depends on reversible reactions, the yield is usually limited by the establishment of thermodynamic equilibrium in the reactor. The styrene yield can be increased by using a hybrid process, with reaction and separation simultaneously. It is proposed using permselective composite membrane to remove hydrogen and thus suppress the reverse and secondary reactions. This paper describes the simulation of a dehydrogenation process carried out in a tubular fixed-bed reactor wrapped in a permselective composite membrane. A mathematical model was developed, incorporating the various mass transport mechanisms found in each of the membrane layers and in the catalytic fixed bed. The effects of the reactor feed conditions (temperature, steam-to-oil ratio, and the weight hourly space velocity), the fixed-bed geometry (length, diameter, and volume), and the membrane geometry (thickness of the layers) on the styrene yield were analyzed. These variables were used to determine experimental conditions that favour the production of styrene. The simulation showed that an increase of 40.98% in the styrene yield, compared to a conventional fixed-bed process, could be obtained by wrapping the reactor in a permselective composite membrane.
机译：苯乙烯是热塑性塑料生产中的重要单体。它的大部分是通过乙苯的催化脱氢生产的。在取决于可逆反应的该方法中，收率通常受到反应器中热力学平衡的建立的限制。通过使用混合方法，同时进行反应和分离，可以提高苯乙烯的收率。提出使用渗透选择性复合膜除去氢，从而抑制逆反应和二次反应。本文描述了在包裹有选择性渗透复合膜的管状固定床反应器中进行的脱氢过程的模拟。建立了数学模型，并结合了在每个膜层和催化固定床中发现的各种传质机理。反应器进料条件（温度，蒸汽/油比和重量时空速度），固定床几何形状（长度，直径和体积）和膜几何形状（层的厚度）的影响分析苯乙烯的收率。这些变量用于确定有利于苯乙烯生产的实验条件。模拟表明，通过将反应器包裹在全选择性复合膜中，与常规固定床工艺相比，苯乙烯的收率提高了40.98％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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