摘要
为克服催化裂化反应—再生系统中微分代数方程求解的复杂性并提高稳态求解的收敛速度,加快系统整体模拟效率,本文采用GDEM加速稳态模型求解。本文基于基准假组分法建立了系统的稳态模型,根据装置的信息流图,通过序贯模块法进行整个系统的稳态模拟并给出模型求解策略和求解流程图。利用工业数据验证所建立模型的准确性和可靠性,通过3种不同的收敛算法考察本文模型对切断量初值的敏感性并比较3种算法下稳态模拟的计算速度及迭代次数。最后考察剂油比对油气产率及反应温度的影响,体现合理选择操作条件的重要性。
To overcome the differential-algebraic equations complexity solution of cracking reaction-regeneration system and improve the convergence rate of simulation, accelerate the efficiency of the overall system simulation, this paper uses GDEM solving steady-state model. A steady-state model of FCC reactor-regenerator system was established based on standard pseudo-component, according to information flow diagram of the device, simulated by sequential modular approach for the entire system and gives the steady-state simulation model solution strategies and processes. In this paper, industrial data is used to validate the modeling accuracy and reliability, in order to investigate the sensitivity of the amount initial of cutting variables, three different kinds of convergence algorithms were used, comparison of steady state simulation calculation speed and the number of iterations under three algorithms will be showed. Finally, illustrating production rate and reaction temperature were influenced by changing the size of catalyst to oil ratio, reflecting the importance of reasonably selection of the operating conditions.
出处
《计算机与应用化学》
CAS
CSCD
北大核心
2013年第12期1411-1416,共6页
Computers and Applied Chemistry
基金
国家高技术研究发展计划(863)资助项目(2007AA04Z191)
关键词
催化裂化
稳态模拟
基准假组分
GDEM
序贯模块法
FCC
steady state simulation
standard pseudo-component
GDEM
sequential modular approach
