: In recent decades, due to declining energy resources and increasing energy costs, energy saving is one of the main programs of industrial units, especially refineries and petrochemical units. Because high energy consumption, in addition to imposing heavy costs, increases environmental pollutants. Numerous solutions to optimize energy consumption in various industries have been proposed so far, one of the most effective and widely used is the heat integration of the network of heat exchangers. In this method, with the help of pinch technology, the network of heat exchangers can be modified in terms of energy consumption. In this study, the propylene production unit from propane (OLEFLEX) was selected for the study. After examining the currents and determining the amount of heat exchanged, the unit was modified based on pinch technology, which resulted in a 23% and 24% reduction in hot and cold utilities. The heat transfer area also decreased by 4%. This technology covers only the heat exchanger network and avoids optimizing other equipment such as the compressor (used in the Vapor recompression system), which is one of the disadvantages of this method. To this end, modifying the pinch method to consider other equipment, leads to greater economic savings and reduced energy consumption in the process. In this research, a new model of modifications made in the design method of pinch heat exchanger network was presented, which is able to consider Vapor recompression and flashing systems within the heat exchanger network, such as the use of two systems of Vapor recompression and flashing Instead of Utilities usage or to reduce their use was reviewed. After designing the new heat exchanger networks, Vapor recompression and flashing systems between process flows were used to upgrade the pinch technology and the results were compared economically. Keywords: Pinch technology, Reduce utility usage, Vapor recompression system, Flashing system, Heat pump, Energy consumptio