华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (12): 44-48,69.

• 化学化工 • 上一篇    下一篇

微通道反应器内CO的选择性甲烷化净化

董新法 刘文跃 高军 林维明   

  1. 华南理工大学 化学与化工学院, 广东 广州 510640
  • 收稿日期:2008-11-05 修回日期:2009-02-19 出版日期:2009-12-25 发布日期:2009-12-25
  • 通信作者: 董新法(1964-),男,教授,主要从事氢能源及技术研究. E-mail:cexfdong@scut.edu.cn
  • 作者简介:董新法(1964-),男,教授,主要从事氢能源及技术研究.
  • 基金资助:

    国家自然科学基金资助项目(20576023);广东省自然科学基金资助项目(06025660)

Purification of CO via Selective Methanation Using Microchannel Reactor

Dong Xin-fa  Liu Wen-yue  Gao Jun  Lin Wei-ming   

  1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-11-05 Revised:2009-02-19 Online:2009-12-25 Published:2009-12-25
  • Contact: 董新法(1964-),男,教授,主要从事氢能源及技术研究. E-mail:cexfdong@scut.edu.cn
  • About author:董新法(1964-),男,教授,主要从事氢能源及技术研究.
  • Supported by:

    国家自然科学基金资助项目(20576023);广东省自然科学基金资助项目(06025660)

摘要: 为了有效去除富氢重整气体中少量的CO,将4Ni-2Ru/ZrO2 双金属催化剂均匀涂布到微通道反应器中,运用CO选择性甲烷化方法来净化CO.考察了焙烧温度、催化剂的涂布方法、CTAB/Zr摩尔比和空速对催化剂性能的影响.实验结果表明:CTAB/Zr的摩尔比为0.35、空速为14286h-1、每次涂布催化剂浆液后350  ℃下焙烧时,所制备的催化剂表现出良好的低温活性,反应温度为260  ℃时可将CO的出口含量降低到0.001 3%(体积分数);CTAB/Zr摩尔比为0.35、每次涂布浆液后350  ℃下焙烧的催化剂,适宜的空速范围为13000~20000h-1

关键词: CO净化, 选择性甲烷化, 富氢重整气, 微通道反应器

Abstract:

In order to effectively remove the small-quantity CO in hydrogen-rich reformed gas, 4Ni-2Ru/ZrO2 bimetallic catalyst was homogeneously coated on a microchannel reactor, and the method of selective methanation was used to purify CO. Then, the effects of calcination temperature, coating method, CTAB/Zr molar ratio and space velocity on the catalyst performance were investigated. Experimental results show that (1) when the calcination is performed at 350 ℃ after each slurry loading with a CTAB/Zr molar ratio of 0.35 and with a space velocity of 14286 h- 1, 4Ni-2Ru/ZrO2 catalyst is of excellent performance in low temperature, and the volume fraction of CO at the outlet reduces to 0. 0013 % at 260 ℃; and (2) a space velocity of 13000 -20000 h- 1 is suitable for the catalyst calcined at 350 ℃ after each slurry loading with a CTAB/Zr molar ratio of 0.35

Key words: CO purification, selective methanation, hydrogen-rich reformed gas, microchannel reactor