The optimization of light gas recovery process with condensation method

As for the problem in storage and sale process of oil products, part of light hydrocarbons composition will easily evaporate into the atmosphere, resulting in a waste of resources and environmental hazards. Chemical process simulation software Aspen Plus is used to simulate the condensation process of 3 light gas samples of S1, S2 and S3, and optimization analysis for light gas recovery processes with condensation method is performed. The results show that 3 hydrocarbon components in great difference can reach the national emission standards when condensing temperature reaches －110 ℃. The light gas recovery process with condensation method should be arranged in four stages, the temperatures should be set to 4 ℃, －40 ℃, －80 ℃ and －110 ℃ respectively, which can not only ensure the light gas recovery rate and emission concentration meet national standards, but also control the energy consumption for light gas recovery at a relatively low level.