Optimization of the process of heating an oil and gas condensate mixture by light naphtha vapor in heat – exchanger condenser 10E04

The constant growth in the cost of energy carriers leads to finding the ways to reduce production costs and efficient use of energy resources by optimizing the technological regimes of oil refineries. Based on the current state of the resource base and the country's growing needs for oil and gas resources, the introduction of modern technologies for maintaining and intensifying the production and processing of oil and gas, the priority is to increase the energy efficiency of the fuel and energy complex. In this aspect, scientific research aimed at the efficient use of the heat of process flows in the stage of thermal preparation of local hydrocarbon raw materials for distillation, the development of new, energy and resource-saving technologies for the production of petroleum products, the optimization of the technological regimes of oil refineries in order to increase their thermal efficiency and reduce the cost of manufacture of petroleum products, the synthesis of technological schemes with a rational number of apparatus for the thermal preparation of raw materials for distillation is of great importance. Based on this, a mathematical model has been developed for the process of thermal preparation of an oil and gas condensate mixture for distillation, which makes it possible to determine the energetically optimal heat exchange surface of the apparatus. Аs a system of equations, the objective function of the optimality criterion is formulated – the specific technological prime cost of the heated oil and gas condensate mixture, which includes changes in the power consumption for its pumping and depreciation deductions for heat exchange equipment depending on parameters the process. On the grounds of investigation of the influence of technological parameters – temperature, composition, and consumption of raw materials in the pipe, as well as steam pressure in the annulus on the efficiency of heat transfer in an industrial heat exchanger, the optimal operating conditions for the heat exchanger 10E-04 at the Bukhara Oil Refinery have been identified: Finter = 219 m2, Cp = 0.010825 USD/kg, A = 0.010825 USD/kg, Cst = 0.02165 USD/kg, and t = 107.3°C, with a specified throughput of Grm = 105 508.3 kg/h.

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