碳二前加氢催化剂的应用.pdf

学兔兔 化 工 进 展 20l0年第29卷第1期 CHEMICAL INDUSTRY AND ENGINEERING PROGRESS ·l83· 碳二前加氢催化剂的应用 车春霞，谭都平，赵育榕，景喜林，梁 琨，常晓昕，颉 伟，贾慧青 (中国石油化工研究院兰州化工研究中心，甘肃 兰州730060) 摘 要：采用均匀设计方法，进行了碳二前加氢催化剂的制备，确定了催化剂的最佳配方和制备工艺。1000h工 业侧线对比评价结果表明，自制催化剂活性稍低于市售催化剂，选择性高于市售催化剂，两种催化剂总体性能相 当。X光电子能谱分析表明，自制催化剂钯银合金作用更为明显，x荧光光谱分析表明表面活性组分含量低于市 售催化剂。 关键词：碳二加氢；乙炔；前加氢；催化剂 中图分类号：TQ 426．94 文献标识码：A 文章编号：1000—66l3(2010)01—0183—04 Preparation and evaluation of C2 front—end hydrOgenatiOn catalyst CHE Chunxia，TANDuping，ZHA0 Yurong，JINGXilin，LIANG Kun，CHANGXiaoxin，XIE Wei， JIA Huiqing fLanzhou Center ofPetrochemical Research Institute，Pe~oChina Company Limited，Lanzhou 730060，Gansu，China) Abstract：Catalyst for C2 front—end hydrogenation was prepared via equality design methodology，and the composition and preparation technics were optimized．The prepared catalyst was compared with the commercially available catalyst in a simulating industry unit for 1 000 h．It was proved that the activity of the prepared catalyst is slightly lower than that of the commercial one，while the prepared catalyst has a better selectivity．XPS analysis revealed that the prepared catalyst has a stronger effect with Pd-Ag alloy， and XRF analysis illustrated that the prepared catalyst has a less active composition on the catalyst surface． Key words：C2 hydrogenation；acet) lene；front—end hydrogenation；catalyst 催化选择加氢脱除碳二 (C2)馏分中的乙炔在 工业中存在两种工艺流程，即前加氢和后加氢。所 c：H2(g)—Hc Hc cH2一H H2 c ；c： g) (2) 谓“前加氢”和 “后加氢”是指乙炔加氢反应器相 对脱甲烷塔位置而言，乙炔加氢反应器位于脱甲烷 塔之前为前加氢，之后为后加氢。