| 膜反应器对CO_2甲烷化反应性能的影响 |
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| 引用本文： | 樊君,胡晓云,尚红伟,吕磊,大矢晴彦.膜反应器对CO_2甲烷化反应性能的影响[J].石油化工,2002,31(6):417-421. |
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| 作者姓名： | 樊君 胡晓云 尚红伟 吕磊 大矢晴彦 |
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| 作者单位： | 1. 西北大学,化工系,陕西,西安,710069
2. 横浜国立大学,日本,横浜,240-8501 |
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| 摘 要： | 采用水蒸气选择渗透SiO2 复合膜及填充Ru/Al2 O3固定床催化剂 ,构成反应 -分离耦合的膜反应器 ,研究其对CO2 甲烷化反应性能的影响。相同反应条件下与管式固定床反应过程比较 ,膜反应器的转化率最大可提高 11%。通过对膜反应器数学模型的数值解析 ,考察渗透速率与反应速率之比等因素对平衡移动的影响 ,为无机膜的制备及膜反应器的设计提供依据。
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| 关 键 词： | CO2 甲烷化 膜反应器 无机膜 SiO2复合膜 膜催化 |
| 文章编号： | 1000-8144(2002)06-0417-05 |
| 修稿时间： | 2001年8月9日 |
Effects of Membrane Reactor on Reactivity of Methanation of Carbon Dioxide |
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| Abstract: | A reaction-separation coupled membrane reactor was used to study the methanation reaction of carbon dioxide with hydrogen.The experiments were carried out under the conditions of superficial space velocity 0.0323 ～0.132 s -1 ;molar ratio of H 2 to CO 2 in the feed gas,1～5;operating pressure,0.2 MPa absolute;temperature,473～723 K;and an effective membrane height of 7.0 cm formed by 10 0 g of Ru-catalyst and 45 0 g of alumina pellets packed in the annular region between two coaxial circular cylinders.The conversion of carbon dioxide with membrane reactor can be increased by a maximum of 11% over that of the fixed bed reactor.Through numerical analysis of the mathematical model of the membrane reactor,the effects of ratio γ H 2O of permeation rate to reaction rate on shift of chemical equilibrium was discussed.This will serve as a guide to the preparation of inorganic membrane and design of membrane reactor. |
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| Keywords: | carbon dioxide methanation membrane reactor inorganic membrane silica composite membrane membrane catalysis |
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