开工阶段影响CB-8催化剂金属功能的因素  

FACTORS EFFECTING ON CATALYTIC FUNCTION OF METAL IN REFORMING CATALYST DURING START-UP

作　　者：刘耀芳[1] 潘国庆[1] 杨九金[1] 

机构地区：[1]石油大学

出　　处：《石油炼制》1992年第9期1-5,共5页

摘　　要：模拟常用的工业开工条件处理CB-8铂铼重整催化剂,考察了温度、气相中氧含量、水含量及烃蒸气等因素对催化剂金属功能的影响规律。实验结果表明,干燥阶段(400℃以上)气相中缺氧可导致CB-8催化剂中铂晶聚集,干燥或还原阶段气相中存在的烃蒸气将在催化剂上生焦使之减活,严重时甚至完全失活。氧的存在对消除上述影响,维持催化剂的金属功能有重要作用。为了保证CB-8催化剂开工过程顺利进行,装置系统内的油气和还原氢中C_2以上烃类必须先清除干净,在干燥阶段气相中应保持一定的氧含量。Effects of temperature, oxygen and water vapor and hydrocarbon vapour contents in gas phase on the catalytic function of metal in reforming catalyst were investigated by treating Pt-Re catalyst CB-8 under conditions similar to those used in the start-up of commercial reforming units. The results indi- cated that the lack of oxgen in gas would lead to platinum sintering and the presence of hydrocarbon in gas would form coke on the catalyst during the drying or reduction stage, both resulting in Catalytic ac- tivity reduction, even completely deactivation of the catalyst. The presence of oxygen may protect the catalytic function of metal in the catalys from the above mentioned undesirable effects.

关 键 词：重整催化剂 开工 温度 氧含量 

分 类 号：TE624.492[石油与天然气工程—油气加工工程]