催裂化装置常规再生操作参数软测量  

Soft measurement of operating parameters of conventional catalyst regeneration in FCCU

作　　者：刘祁跃[1,2] 吕文祥[1] 黄德先[1,2] 贺文敏[3] 张金柱[3] 

机构地区：[1]清华大学自动化系,北京100084 [2]清华信息科学与技术国家实验室,北京100084 [3]中石化沧州石化分公司,河北沧州061000

出　　处：《计算机与应用化学》2009年第8期975-978,共4页Computers and Applied Chemistry

基　　金：国家高技术研究发展计划(863)(2007AA04Z193);国家自然科学基金(60574072);国家重点基础研究发展计划(973)(2002CB3122002)

摘　　要：针对催裂化生产中,为节能降耗和提高生产能力将再生器从完全再生转换为常规再生后,重要操作参数的在线估计更为困难这一问题,联合利用再生器机理分析动态模型和外置CO焚烧炉热量平衡,采用基于机理分析的在线实时工艺计算技术和动态模型观测技术相结合的方式,实现了催裂化装置再生器不可测变量的动态软测量。通过内外校正迭代,得到了符合精度的出口烟气成分。对于复杂经验公式,采用智能优化算法进行参数寻优,避免陷入局部极小,得到符合现场工况的可行公式。适当假设条件并选择关键变量,建立动态模型,保证了整个软测量的精度。本方案为该重要生产过程的安全生产和节能降耗提供了帮助,在实际生产装置上已得到成功应用。To solve the problem that the on-line estimation of operating parameters becomes more complicated when converting complete catalyst regeneration into conventional catalyst regeneration in FCCU, a new solution composed of regeneration＇s dynamical mechanism model and heat balance of CO incinerator is developed. Using on-line real-time computing technique based on mechanism analysis and the dynamical model technique, the dynamical soft measurement of immeasurable variables in FCCU is realized. The proper gas composition is obtained by the iteration and correction in and out of the regenerator. Particle swarm optimization （PSO） is used to search for the correct parameters of empirical formula, successfully solving local minimum problems. Based on some reasonable assumption, the dynamical model is built to make sure the precision is qualified. This solution contributes to the safe production and energy-saving, and has been successfully applied to the actual production devises.

关 键 词：软测量 常规再生 迭代校正 动态建模 微粒群优化 

分 类 号：TQ015.9[化学工程] TP391.9[自动化与计算机技术—计算机应用技术]