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可变加工成本的计算是石化企业生产计划优化中的重要组成部分,与企业利润直接相关。根据炼油厂生产装置的特点,使用回归分析的方法得到可变加工成本各组成部分和加工量的非线性函数关系式,并由此推导出主要装置的单位可变加工成本函数,将其代入到生产计划的目标函数中,建立炼油厂生产计划的非线性优化模型。应用实例证明该模型与常数单位加工成本模型相比,可以有效地区分同类型加工装置加工成本的差异,调整物料分配,其结果更符合生产实际。
The calculation of variable processing costs is an important part of the optimization of production planning in petrochemical enterprises, which is directly related to the profit of enterprises. According to the characteristics of the refinery’s production plant, regression analysis is used to get the nonlinear function relationship between the components of the variable processing cost and the processing volume, and then deduces the unit variable cost function of the main unit, In the objective function of production plan, a nonlinear optimization model of refinery production plan is established. The application example proves that the model can effectively distinguish the processing cost of the same type processing device from the processing cost model of the constant unit, adjust the material distribution, and the result is more in line with the actual production.