Application of the modified pinch-analysis method for optimization of installation structure of primary oil refining

The optimum structure of installation of primary oil refining is capable to create pre-conditions for rational use of energy resources at the modern enterprise. Besides, such structure considerably increases efficiency of use of the heat - exchange equipment. Undoubtedly it is an important event from energy saving on processing of oil products enterprise. Obviously correctly chosen method of the analysis is a guarantee of accurate and right results under the set initial conditions. For certain, all from known methods of the analysis of structures have their advantages, shortcomings and peculiarities. In this article it is offered to connect a pinch-analysis method with an net exergy method. Such modification allows to use advantages of each of them to achieve the best results. Fulfilled calculation of parametrical sensitivity of function with three variables didn't reveal high parametrical dependence of the given cash and power expenditures on the set initial parameters - a temperature pressure, entrance temperature of raw materials and number of heat - exchange devices in installation of primary oil refining. The general form of record of objective function of search of optimum structure of primary oil refining installation is presented. Such objective function allows to analyze in common the process of functioning the system of any technical structure. Dependences of the given expenses in monetary and power units on set initial parameters are revealed. Optimum values of objective functions and their size in extreme points of values area are defined. The modified method of the pinchanalysis allows to compare technical and economic indicators to the power results received after the analysis of structure of primary oil refining installation.