Exergoeconomic analysis for crude oil gathering and transportation system in matrix pattern

Abstract

Based on exergoeconomic theory, the energy consumption situation for a typical oil transfer station in eastern China is evaluated. According to the analysis of the distribution for logistics and exergy flow, the crude oil gathering and transportation system is divided into two subsystems: pipe network and oil transfer station. The unit exergoeconomic costs for each component exergy flow are calculated by computing method in matrix pattern, of which the pressure exergy and thermal exergy at the end of the process are 812.58 yuan/GJ and 1575.24 yuan/GJ, respectively. Simultaneously, exergoeconomic evaluation indicators such as exergy cost growth coefficient, relative cost difference, and exergoeconomic coefficient are calculated, which can conclude the weak link of technical system is heating furnace equipment. The growth value of its exergy cost growth coefficient is 14.988, the relative cost difference is 94.503, and the exergoeconomic coefficient is 9.046, so it has great potential for energy saving. Exergoeconomic analysis method can provide a scientific and effective method or basis during the energy‐saving reconstruction for oil gathering and transportation system.

Energy and Thermo-Economic Analysis of Crude Oil Gathering Station and Hydrocarbon Transport

“…These results are close to the analysis of energy and exergy collection stations and transportation systems for crude oil delivery in the Zhao II Daqing oil field conducted by Kou and Yang 2012, where the percentage of exergy lost in the gathering process is 29.29%, treatment and water injection is 30.69%, and hydrocarbon transport was 27.28% of exergy is lost in the form of heat and pressure [17]. Meanwhile, Cheng et al, [18] analyzed the economic exergy at a gathering station and transportation station in East China, where 579.11 yuan/GJ was the economic value of exergy lost in the form of pressure and 1,243.39 yuan/GJ was the cost of exergy heat lost [18,19].…”