摘要
本文以甲醇合成铜基催化剂硫化氢中毒本征失活动力学为基础,分析联醇合成塔催化剂失活。根据工厂生产操作数据,采用一维拟均相数学模型,反算出国产C207铜基催化剂的活性校正系数,并将其分解成为表面中毒催化剂效率因子、床高因子。表面中毒催化剂效率因子采用甲醇单组分模型的正交配置解求得,床高因子由工厂生产数据拟合成关联式。计算表明,在某一使用时间,床层的位置由上而下催化剂未中毒比半径增加,效率因子增大;在同一床层位置,随使用时间的增加,催化剂未中毒比半径减少,效率因子降低。
The deactivation of Catalyst in methanol synthesis converter has been analysed based on the intrinsic deactivation kinetics for hydrogen sulfide poisoning of methanol synthesis Cu-based catalyst. With the practical data collected from a plant, the activity correction factors for C207 catalyst uere calculated by using the one dimensional sumulated homogeneous model. Such a factor was divided into effectiveness factor of surface poisoned catalyst and bed height factor. The effectiveness factor of surface poisoned catalyst was solved by using orthogonal collocation method with single methanol component model; the expression for bed height factor was obtained from practical data. The results indicate that at a eration period of operation the non-poisoned specific radius of particle catalyst and effectiveness factor increase at the catalyst bed from top to bottom; and at the same height of catalyst bed the non-poisoned specific radius and effectiveness factor decrease with increasing of operation period.
关键词
甲醇
催化剂
效率因子
活性
Synthesis methanol process, Surface poisoned catalyst, Effectiveness factor, Activity correction factor
