Link for citation:  Levitin R.E., Tsytselskaya V.A. Efficiency of using breathing valves at theoretically high pressures of their operation. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 1, рр.187-195. In Rus.

The relevance. The article highlights the problem of losses of oil and oil products during the production of tank batteries, that existences affect economic and environmental aspects of the sustainable use of resources. To reduce hydrocarbon emissions, enterprises are currently using various technological means. The achieved effect of the application of existing and developing methods to combat losses can be determined by applying specialized calculation methods, which, due to the use of various assumptions in the calculations by the authors, the presence of errors of measuring instruments during experimental studies are imperfect. Therefore, at the moment, the possibility of a reliable assessment of the effectiveness of methods for reducing losses is one of the main tasks for establishing really achievable emissions during the operation of tank farms and the correct choice of using technological means of their equipment. The main aim of the research is to determine the effectiveness of reducing emissions by excessive pressure storage as the effective way. The object: vertical steel tank with a nominal volume of 10000 m³, the structure of which is able to withstand various loads, and breathing valves with the ability of setting a wide pressure range, including pressure range more than the calculated one of currently installed on vertical steel tanks. Methods: analytical methods of molecular-kinetic theory. Results. The article describes the results of the authors' researches indicating that the setting of the breathing valves on a greater excessive pressure of activation leads to a more complex dependence of losses of the vapor-air mixture depending on large and small breaths in the vertical steel tank. It is estimated that theoretically high actuation pressures of breathing valves can be observed increasing losses from produced «small» breaths by 7,25 times, that highlights the necessaty of invention of technologies and methods that can exclude emissions of the vapor-air mixture.