An oil refinery production optimization

This paper describes the structure of a complex oil refinery and its optimization model. The refinery has six distillation stages and ability to produce eleven products which can be sold on the market. Revenues are made by product trading. The production of oil refinery is optimized during one year period by taking into account the price of market products. The plants whose profitability will be considered are H₂ and CLAUS. Profitability of unit construction is evaluated over a period of 25 years. The refinery uses a crude oil obtained from its own sources (fields) or the oil purchased on the market. This oil has a price and it is assumed that the marginal cost of oil price in the market is equal to marginal cost of production from its own resources. Refinery elements, distillation stages and all characteristic parameters are described and included in the mathematical model. Mathematical model is made from elements and connected to overall model where multiple scenarios and simulations are made for finding the best solution.