Integral DOC catalyst for marine diesel engine tail gas purification and preparation process thereof

• Main Authors: WU WEIHONG, SONG HAO, ZHOU JINSONG, WANG YAOLIN, ZHAO HAOYING, LUO ZHONGYANG, ZHENG CHENGHANG, CEN KEFA, GAO XIANG, ZHU XINBO, WENG WEIGUO, NI MINGJIANG, ZHANG YONGXIN
• Format: Patent
• Language: Chinese; English
• Published: 21.09.2016
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to the technical field of marine diesel engine tail gas post-treatment, in particular to an integral DOC catalyst for marine diesel engine tail gas purification and a preparation process thereof. The integral DOC catalyst for marine diesel engine tail gas purification takes cordierite honeycomb ceramic as the carrier, in terms of 100% of the mass of the cordierite honeycomb ceramic, the active components loaded on the cordierite honeycomb ceramic carrier includes: greater than or equal to 3%wt of palladium, and greater than or equal to 6%wt of the sum of cerium oxide and zirconium oxide. The DOC catalyst can well adapt to the special work conditions of marine diesel engine tail gas treatment, and also can effectively improve the problems of catalyst poisoning, catalytic carrier channel blockage, and high sulfate content of the tail gas. 本发明涉及船舶柴油机尾气后处理技术领域，特别涉及种用于船舶柴油机尾气净化的整体式DOC催化剂及其制备工艺。种用于船舶柴油机尾气净化的整体式DOC催化剂，该催化剂以堇青石蜂窝陶瓷为载体，以堇青石蜂窝陶瓷的质量为100%计，负载在堇青石蜂窝陶瓷载体上的活性组分含量为：钯大于等于3%wt，氧化铈与氧化锆之和大于