微通道反应器内CO的选择性甲烷化净化  

Purification of CO via Selective Methanation Using Microchannel Reactor

作　　者：董新法[1] 刘文跃[1] 高军[1] 林维明[1] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2009年第12期44-48,69,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：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4 Ni-2Ru/ZrO_2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)。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

关 键 词：CO净化 选择性甲烷化 富氢重整气 微通道反应器 

分 类 号：TQ426.8[化学工程]