双峰孔分布CN-18气态烃一段转化催化剂的工业试验

THE INDUSTRY PRE - OPERATION OF GAS HYDROCARBON STEAM REFORMING ON CN - 18 NICKEL CATALYST WITH DOUBLE HAMPED DISTRIBUTION IN PORE STRUCTURE

在20 000 t/a合成氨装置一段转化炉上,将CN-18型气态烃蒸汽一段转化催化剂装整炉,在操作压力为1.3 MPa,一段炉入口温度为400℃,出口温度为670℃,水碳比(摩尔比)为3.0的工况条件下运转一年后,测得其压力降为0.2 MPa。一段炉入炉温度比使用常用催化剂低40℃,出炉温度低20℃,可有效节约能量。该催化剂反应活性比常用催化剂高10％,出炉转化气中残余甲烷含量<10％,提高生产能力7.5％。催化剂反应活性衰减较慢,活性稳定。优于目前常用催化剂。

The CN - 18 nickel catalyst of gas hydrocarbon steam reforming is used for the industry pre - operation on the plant of steam reforming furnace with 20 000 t/a ammonia capability. Under the conditions: pressure 1.3MPa, furnace inlet temperature 4001, outlet temperature 670℃, mH2o :mC = 3.0, the pressure drop is 0. 2MPa after a year. The furnace inlet temperature is lower 20℃ than usual industrial catalyst, which can save energy. The reaction activity of CN - 18 catalyst is greater 10% than usual industrial catalyst, and the remains methane content in reforming gas is less than 10% , the production capacity raises by 7.5% .