一氧化碳偶联合成草酸二甲酯催化剂中试研究  

Pilot test of the catalysts for synthesis of dimethyl oxalate by carbon monoxide coupling

作　　者：梁旭 苗杰[1] 赵立红 崔发科 张鲁湘 魏灵朝 蒋元力 LIANG Xu;MIAO Jie;ZHAO Li-hong;CUI Fa-ke;ZHANG Lu-xiang;WEI Ling-chao;JIANG Yuan-li(Research Institute of Henan Energy and Chemical Industry Group Limited Company,Zhengzhou 450046,China;School of Chemical Engineering and Energy,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]河南能源化工集团研究总院有限公司,河南郑州450046 [2]郑州大学化工与能源学院,河南郑州450001

出　　处：《天然气化工—C1化学与化工》2018年第6期80-83,共4页Natural Gas Chemical Industry

摘　　要：依托于现有的一个20万t/a煤基乙二醇工业装置及其公用工程,建设了一个百吨级草酸二甲酯(DMO)中试装置。采用自主研发生产的DM系列钯基催化剂,在工业原料条件下,分析了升温还原过程、催化剂床层压降及产物选择性,同时考察了进料CO与亚硝酸甲酯(MN)的物质的量比对DMO选择性的影响,总结了开车整体运行情况。结果表明,在工业条件下,DM系列催化剂经放大生产后用于百吨级中试生产,总体运行近1600h,原料MN转化率大于65%,DMO选择性大于98.5%,DMO时空产率达650g·L^(-1)·h^(-1),具有较好的耐久性和活性稳定性。A 100t/a dimethyl oxalate(DMO)pilot unit was built based on an existing 200kt/a coal-based ethylene glycol industrial plant and its utilities.The self-developed DM series palladium-based catalyst was used to analyze the temperature reduction process,catalyst bed pressure drop and product selectivity under industrial raw material conditions.The effect of the molar ratio of CO to methyl nitrite(MN)on the selectivity of DMO was also investigated.The overall operation of the test was summarized.Over the operation of near 1600h,MN conversion was more than 65%with the DMO selectivity of above 98.5%and the DMO space time yield of above 650g/(L·h).The catalyst has good durability and activity stability.

关 键 词：草酸二甲酯 一氧化碳偶联 中试 钯基催化剂 稳定性 

分 类 号：TQ225.242[化学工程—有机化工] TQ426