CO合成草酸二乙酯设备材料的选择试验

Experimentation for Selection Material of Equipment for Preparation of Diethyl Oxalate by CO Coupling- Regeneration Reaction

本文为一氧化碳气相偶联合成草酸二乙酯设备进行了选材试验。将 7种金属矩形材料 :30 6、31 4L、31 6L、锆 (Zr)、Ti(2 )、Ti(1 0 )、1Cr1 8Ni9Ti和一种非金属材料矩形PE(高密度聚乙烯 )悬挂于再生反应器的液体混合物中进行模试试验。悬挂时间为1 5 0 0h ,并测量了腐蚀速度 ,得知 31 4L的腐蚀速度最大 ,其它依次为 30 6L、31 6L、Ti(1 0 )、1Cr1 8Ni9Ti、锆 (Zr)、Ti(2 ) ,PE最小 ;1Cr1 8Ni9Ti为合适的设备材料。

This paper discussed the material of equipment which was used to prepare diethyl oxalate by CO coupling\|regeneration reaction with the method of weight.The seven kinds of metal material,such as 306,314L,316L,Zr,Ti(2),Ti(10),1Cr18Ni9Ti and one kind nonmetal material(PE)have been hung in the liquid compound in the regeneration reactor for 1500hours.The experiment indicative that the corrosion rate of the 306 is the biggest,in the after is 316L,Ti(10),1Cr18Ni9Ti,zincorium(Zr),Ti(2),that of PE is lest;1Cr18Ni9Ti is the better material of equipment.