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填料塔是海上浮式生产系统中天然气预处理的重要设备,在海上油气田特殊环境下,填料塔内会存在较为严重的液体不均匀分布,降低填料塔的传质性能。通过调研国内外有关晃荡条件下填料塔内气液流场和传质性能的研究现状,分别从实验研究、数值模拟研究、机理模型法3个方面分析了国内外的研究进展:实验研究方面主要集中于国外,研究内容主要为晃荡条件对填料塔整体性质的影响,部分涉及流型的变化情况;数值模拟研究方面主要从宏观尺度研究晃荡条件对填料塔内气液流场的影响;机理模型法进行改进后首次用于分析海上条件对规整填料塔内液体分布的影响,为填料塔的研究提供了新的研究思路。结合工程实际,指出了晃荡条件下填料塔内运行性能研究方法的不足和今后的研究重点,可为浮式环境中填料塔的优化设计提供一定参考。
Packed tower is an important equipment for pretreatment of natural gas in offshore floating production system. Under the special circumstances of offshore oil and gas fields, there will be more serious non-uniform distribution of liquid in packed tower, which will reduce the mass transfer performance of packed tower. The research status of gas-liquid flow field and mass transfer performance in packed tower at home and abroad were investigated. The research progress at home and abroad were analyzed from three aspects: experimental study, numerical simulation and mechanism model respectively: Concentrating on foreign countries, the main contents of the study are the influence of sloshing conditions on the overall properties of packed towers, and the changes of flow regimes in part. In numerical simulation, the effects of sloshing conditions on the gas-liquid flow field in packed columns are studied macroscopically. The method is firstly used to analyze the influence of the sea conditions on the liquid distribution in the structured packed tower and provides a new research idea for the packed tower. In combination with engineering practice, the shortage of research methods on the performance of packed tower under sloshing conditions and the research emphasis in the future are pointed out, which can provide some reference for the optimal design of packed tower in floating environment.