浮式液化天然气装置LNG预处理工艺大型分离设备研究进展

Research Development of Large Separation Devices in LNG Pretreatment for FLNG

分离设备是海上浮式生产系统上天然气预处理的重要设备,在海上油气田特殊环境下,分离设备在气液不均匀分布条件下会严重影响分离效率,使预处理工艺效率降低。通过调研有关晃荡条件下分离设备气液流动和传质性能的研究现状,分别对气液分离器、填料塔等典型设备和常用的净化工艺进行讨论分析,为提高浮式设备的分离效率提供新的研究思路。结合工程实际,指出晃荡条件下分离设备运行性能的现有问题和今后的研究重点,为浮式环境中分离器的选型和优化设计提供建议。

Separation devices are the key equipment in the liquefied natural gas（LNG）pretreatment process of the offshore floating production system,and the distributions in the devices could make large impacts on the separation efficiency,especially under the specific conditions in the offshore oil/gas field,which will decrease the efficiency of the pretreatment processes.We review the overseas and domestic research status about the gas-liquid flow and mass transfer performances under sloshing conditions,analyze the characteristics of the gas-liquid separator,packed column and the purification process,and provide some research approaches for improving the separation efficiency of the floating equipment.According to the practical project,the current problems and the future research emphases of the offshore separation equipment are pointed out,which could offer advices for the offshore separator selection and optimization.