关键词: LNG接收站, 蒸发气, 模拟计算

Abstract: In the design and construction of the LNG receiving terminal, the accuracy of BOG (boil-off gas) generation calculation will directly affect the equipment investment and the stability of daily operation.In order to improve the accuracy of BOG generation calculation, taking a project for example, based on the traditional method of BOG calculation, introduced the computer simulation software——Aspen Hysys, selected the Peng-Robinson equation of state, simulated the receiving terminal process, obtained the maximum amount of BOG generation.Through comparison with traditional static design calculation, finding the shortage of traditional static design calculation, the results show that the simulated calculation of BOG generation by Hysys is more accurately reflect the actual situation of LNG receiving station.This method is suitable for the preliminary design and detailed design stage of the LNG terminal, traditional static design calculation can be used to roughly calculate for the feasibility study stage of the LNG terminal.

Key words: LNG receiving terminal, boil-off gas, simulated calculation