关键词: 混油 , 成品油 , 管网 , 优化设计 , MATLAB , 遗传算法

Abstract: Considered that the mixed oil would be produced in the batch transportation of the product oil pipeline, the highest revenue in the life cycle as the objective function, the diameter and the wall thickness as the decision variables, a product pipeline network optimization model was set up. The calculation formula based on diffusion theory and empirical formula were used to calculate mixed oil quantity. And the genetic algorithm was used to solve the model. The results show that the design of mixed oil costs account for 3% to 10%, and it’s related to the factors as the transportation batches per year, the number of species transported in each batch and the cost on management of oil mixture per unit volume. Generally mixed oil loss can’t be ignored, and the weight coefficient method can be used for a variety of design options. Using different formulation often got different result, so in practical engineering projects the closest formulation can be chosen to calculate.v

Key words: Mixed oil, Product oil, Pipeline network, Optimal design,  MATLAB , Genetic algorithm