The annular centrifugal extractor (ACE) integrates mixing and separation. It has been widely used in many industrial fields because of its low residence time, compact structure, and high mass transfer efficiency. Most of the literature has focused on flow instabilities, flow visualization, and computational fluid dynamics simulations. More recently, research on hydrodynamic behavior and structural optimization has received widespread attention. With the development of ACE technology, applications have been broadened into several new areas. Hence, this paper reviews research progress regarding ACE in terms of hydrodynamic characteristics and the structural improvements. The latest applications covering hydrometallurgy, nuclear fuel reprocessing, bio-extraction, catalytic reaction, and wastewater treatment are presented. We also evaluate future work in droplet breakup and coalescence mechanisms, structural improvements specific to different process requirements, scaling-up methods, and stability and reliability after scaling-up.

环形离心提取器（ACE）集混合和分离于一体。因其停留时间短、结构紧凑、传质效率高等优点，在许多工业领域得到了广泛的应用。大多数文献都集中在流动不稳定性、流动可视化和计算流体动力学模拟上。最近，水动力行为和结构优化的研究受到了广泛关注。随着 ACE 技术的发展，应用已扩展到几个新的领域。因此，本文从水动力特性和结构改进方面回顾了ACE的研究进展。介绍了湿法冶金、核燃料后处理、生物提取、催化反应和废水处理等领域的最新应用。