The process of commodity diesel fuel production in a refinery has been modelled by the use of the Generalized Net (GN) apparatus.GNs are extensions of Petri nets and of all 9x11 pergola their modifications and extensions.The model accounts for the orders of different grades of diesel fuel and the available amounts cyspera cream where to buy of the different diesel fuel components.It can be used for the synchronization and optimization of these processes.