碳二馏分加氢催化剂PEC-261的性能评价  

Performance evaluation of PEC-261 catalyst for hydrogenation of C2 fraction

作　　者：谭都平 张峰 车春霞 杨博 李保江[2] 张生芳 彭远嘱 TAN Du-ping;ZHANG Feng;CHE Chun-xia;YANG Bo;LI Bao-jiang;ZHANG Sheng-fang;PENG Yuan-zhu(Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,China;Petrochemical Plant of Lanzhou Petrochemical Company,PetroChina,Lanzhou 730060,China)

机构地区：[1]中国石油石油化工研究院兰州化工研究中心,甘肃兰州730060 [2]中国石油兰州石化公司石油化工厂,甘肃兰州730060

出　　处：《石化技术与应用》2023年第2期104-107,共4页Petrochemical Technology & Application

基　　金：中国石油天然气股份有限公司资助项目(项目编号:LH-17-07-49-01)。

摘　　要：对碳二后加氢催化剂PEC-261,根据单段和两段加氢工艺,在乙炔体积分数为0.60%~1.50%,体积空速为3000 h^(-1)的工况下,于工业侧线评价装置中进行长周期性能评价。结果表明:高体积分数CO物料的碳二加氢,其乙烯选择性最低为70%,明显高于常规单段碳二加氢的选择性(-20%);采用两段加氢,可达到较长运行周期和较高选择性的双重效果;单段加氢运行期间反应器出口乙炔体积分数低于2×10^(-6),乙烯总选择性达到90%以上,1000 h长周期运行期间,反应器入口温度仅提高5℃,达到工业装置要求;在原料中有高体积分数CO时,PEC-261催化剂可以满足长周期运行的要求。Under the condition with the acetylene volume fraction of 0.60%-1.50%and the space velocity of 3000 h^(-1),the long-period performance evaluation based on the single-stage and two-stage hydrogenation process on the industrial siding evaluation device was carried out on PEC-261,a tail-end C2 hydrogenation catalyst.The results showed that during the C2 hydrogenation with high CO volume fraction,the lowest selectivity of ethylene was 70%,which was much higher than that of conventional single-stage C2 hydrogenation(-20%).The long operation period and high selectivity could be achieved by two-stage hydrogenation.During the operation of single-stage C2 hydrogenation,the volume fraction of acetylene at the outlet of the reactor was less than 2×10^(-6),and the overall selectivity of ethylene was more than 90%.During the 1000 h long-period operation,the inlet temperature of the reactor increased only 5℃,which met the requirements of industrial plant.The PEC-261 catalyst could meet the requirements of long-term operation when there was high CO volume fraction in the feed stock.

关 键 词：碳二加氢 CO 催化剂 乙烯选择性 乙炔 性能评价 

分 类 号：TQ426.95[化学工程]