中文摘要：

针对海上平台的特点，提出了海上平台水合物分离器工作原理及结构设计，该装置无需要添加任何化学药物，高效地从天然气中分离出水和重烃类液体，同时具有节能环保，结构紧凑，占地面积小和分离效率高等优点。同时，基于严谨的多相流体动力学理论，采用计算流体力学（CFD）对水合物分离器内气液两相流进行了三维非稳态数值模拟。模拟计算结果表明，所采用的数学模型和数学模拟计算方法正确，可以预测并反映不同时刻分离器中气液两相体积比率的变化规律，从而更加系统深入地探讨了水合物分离器内气液两相的流动及分离特性，从两相流的角度对水合物分离器的结构优化提供了理论根据。

英文摘要：

According to the characteristics of offshore platforms, this paper in detail presents the operating principle and configuration design of the new offshore hydrate separator. This device can be used to separate hydrates and liquids form natural gas without using chemicals, and there are some benefits including energy conservation, environmental protection, compact structure, small floor space and high separating efficiency. At the same time, basing on the precise multiphase fluid dynamics theory and computational fluid dynamics （CFD）, the unsteady gas-liquid flows＇ key parameters that influence separation performance have been numerically simulated. Simulation results show that this mathematical model and numerical method are correct, and can forecast and reflect variable rule of gas-liquid phase volume fractions inside the new offshore hydrate separator at different time. And the results also can in-depth analysis the flow and separation characteristics of gas-liquid flows in the new hydrate separator. This paper provides the theoretical basic for structure optimization of new offshore hydrate separator from the perspective of gas-liquid flows.