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Документ Heat Integration of ammonia cooling unit in to the purification process of fats and oils(2007) Tovazhnyanskyy, Leonid; Kapustenko, Petro; Ulyev, Leonid; Boldyrev, Stanislav; Garev, AndreyThe majority of the enterprises of the food processing industry in Ukraine use the technological processes with refrigerating cycles. Basically it is ammonia refrigeration units. In most of such refrigeration units energy of the ammonia overheat after compression is not used and discharged to the environment through cooling system. After some modernization this energy can be utilized for heating of technological streams. It can be achieved by detailed inspection of technological streams system and heat integration of the ammonia unit into a heating system of the enterprise. In this work inspection of fining and deodorization process of vegetable oils has been conducted and the opportunity of heat integration of an existing ammonia refrigeration unit into technological process is considered. There are two options for using of heat from cooling and condensation of ammonia: without additional compression of ammonia; with additional compression of ammonia stream. In this paper both options are considered and comparison is given.Документ Total Site Integration of Light Hydrocarbons Separation Process(The Italian Association of Chemical Engineering, 2016) Ulyev, Leonid; Vasilyev, Mihail; Maatouk, Abbas; Duic, Neven; Khusanov, AlisherUkraine is the largest consumer of hydrocarbons per unit of production in Europe (Ukraine policy review, 2006). The most important point is a reduction of energy consumption in chemical and metallurgical industries as a biggest consumer. This paper deals with energy savings potential of light hydrocarbons separation process. Energy consumption of light hydrocarbons separation process processes typical of Eastern European countries were analysed. Process Integration (PI) was used to perform a preliminary analysis of different units and fulfil the retrofit project of Total Site Integration (TSI). A new heat exchanger network (HEN) were developed and the equipment was calculated with use of the Pinch principles. A complex method was developed and applied to integrate several units at the enterprise site demonstrating the possibility to use heat pumps. Heat pump integration increases heat recovery and offers a solution in order to increase energy savings and project profitability. The heat transfer area and number of heat exchangers for a retrofitted heat exchanger network have been identified. The estimated payback period for integration Heat Pump of Gas Separation Enterprise is about 127 days and the pathways of plant modernization have been also proposed.