Thermodynamic analysis of the hydrocarbons processing plants fuel supply systems efficiency

Hydrocarbon processing plants (HPP) are the key elements of the fuel and energy complex of the Russian Federation. At the same time, they are characterized by the increased energy consumption of the production and have a negative impact on the environment. The energy and resource saving technologies implementation necessity at the industry enterprises is declared at the state level and is a complex scientific problem. HPP energy efficiency improvement high potential is concentrated in the fuel systems modernization. The paper presents the fuel system analysis results, besides the fuel system relationships with the facility process system, its energy complex and external power supply systems were established. The energy consumption mix analysis of the HPP main production facilities for all types of fuel was carried out. Internal generation hydrocarbon fuel, namely refinery gas and mazut were established to be mainly applied as fuel. Refinery fuel gas of the internal generation was found out to have a variable blend composition. HPP fuel efficiency thermodynamic analysis was conducted to determine the fuel exergy absolute and specific consumption. Moreover, the HPP fuel systems efficiency improvement most promising areas were identified. On the basis of the conducted studies, a block scheme of the internal power supply source combined with the combustible secondary energy resources (SER) utilization system was developed. The feasibility study of the proposed scheme application expediency was conducted.