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为了优化精馏装置的操作参数,提高工业生产过程中C_5+液体收率,提出了某石化企业基于50万t/a催化重整装置的设计方案。首先分别对催化连续重整工艺工程反应原理、工艺流程、操作参数进行详细介绍。对重整反应部分以机理建模的方法建立了反应部分的稳态模型,参照仿真结果对反应过程的稳态特性进行了分析,验证了模型与实际工况较吻合。对重整反应部分的优化问题进行了描述和分析,采用内点罚函数法和遗传算法的方式对该非线性规划问题进行了求解。同时分析操作压力、反应温度、氢油比对C_5+液体收率影响,确定最优的操作参数。模拟结果表明,参数优化有效且可行,对工业生产过程中相关参数的设定有重要的指导意义。
In order to optimize the operating parameters of distillation unit and increase the yield of liquid C_5 in industrial process, a design scheme of a petrochemical plant based on 500,000t / a catalytic reforming unit was proposed. First, the catalytic continuous reforming process engineering reaction principle, process flow, operating parameters are described in detail. The steady-state model of the reaction part was established by means of mechanistic modeling of the reforming reaction. The steady-state characteristics of the reaction process were analyzed with reference to the simulation results, which verified that the model was in good agreement with the actual working conditions. The optimization problem of the reforming reaction is described and analyzed. The interior penalty function method and the genetic algorithm are used to solve the nonlinear programming problem. At the same time, the influence of operating pressure, reaction temperature and hydrogen / oil ratio on the yield of C_5 liquid was analyzed to determine the optimal operating parameters. The simulation results show that the parameter optimization is effective and feasible, which has important guiding significance for the setting of relevant parameters in industrial production.