气体超声速凝结与旋流分离研究进展

超声速旋流分离技术是天然气加工处理领域的一大技术创新，它将膨胀降温、旋流式气/液分离、再压缩等处理过程集中在密闭紧凑装置中完成。本文总结了超声速旋流分离装置种类、原理及优缺点，并从理论分析、数值模拟、实验和现场应用等方面回顾了易凝气体低温凝结理论和超声速旋流分离技术研究现状和最新进展。大量实验及现场应用均表明超声速旋流分离装置具有结构紧凑轻巧、节能环保、安全可靠等优点，同时该技术的应用不断趋于多元化，从传统的脱水、脱重烃逐渐向脱酸气和天然气液化领域拓展，应用前景广阔，但在应用过程中也存在液滴二次蒸发与能量损失较大等问题。下一步研究工作可以从多组分混合物凝结过程的交互作用机制、凝结液滴的运动特性和碰撞聚并机理等方面入手，在此基础上探索提高凝结效率和降低能量损耗的方法，以促进超声速旋流分离技术多元化的工业应用。

A review on condensation and swirl separation of supersonic gas

Supersonic swirl separation technology is a major technological innovation in the field of natural gas processing and treatment. It combines expansion and cooling, gas/liquid swirl separation, recompression and other processing processes in a closed and compact device. The types, principles, advantages and disadvantages of supersonic swirl separator were summarized, and the research status and the latest progress of the theory of low temperature condensation of condensable gas and supersonic swirl separation technology were reviewed from the aspects of theoretical analysis, numerical simulation, experiment and field application. A large number of experiments and field applications show that the supersonic swirl separator has the advantages of compact and light structure, energy conservation and environmental protection, safety and reliability. At the same time, the application of the technology is becoming more and more diversified. It is gradually expanding from the traditional dehydration and heavy hydrocarbon removal to the field of deacidification and natural gas liquefaction, which has broad application prospects. However, there are also problems such as secondary evaporation and large energy loss in the application process. The next research work can start from the interaction mechanism of the multi-component mixture condensation process, the movement characteristics and the collision and coalescence mechanism of condensate droplets. On this basis, effective ways can be explored to improve the condensation efficiency and reduce the energy loss, so as to promote the industrial application of the supersonic swirl separation technology.