关键词: 石油, 蒸馏, 模拟, 经济

Abstract:

Atmospheric and vacuum units are one of the most important components of refining and chemical enterprises. Not only their energy consumption is related to the total energy consumption of the entire process, but also the yield and quality of sideline products have a significant impact on downstream processes. At present, there are relatively few researches on the influence of atmospheric and vacuum equipment on the net profit. This paper uses Aspen process simulation software and related components to simulate the tower equipment and heat exchange network. Based on the optimization of other process parameters, the influence of the ratio of heat taken in the middle section of the high temperature position of the atmospheric tower and the vacuum tower on the sideline product yield, heat exchanger maintenance and depreciation costs, circulating water costs and fuel oil costs is analyzed. The results show that the ratio of heat extraction in the middle of the high temperature position is positively correlated with heat exchanger maintenance and depreciation costs, but negatively correlated with light oil extraction rate, circulating water costs and fuel oil costs. Based on the above analysis results, it is determined that increasing the proportion of heat extraction from line-two's from 33.1% to 38.1%, and reducing the proportion of heat extraction from vacuum distilation column 3 from 40% to 35.4%, can further increase the net profit of refining and chemical enterprises by 146 million yuan per year. It provides a theoretical basis for enterprises to further improve production efficiency.

Key words: petroleum, distillation, simulation, economy