物理场强化气液传质的研究进展

Research progress of enhancement of gas-liquid mass transfer by physical fields

分别简述了磁场、电场、电磁场、超声场和超重力场5种物理场的作用机理,综述了这些物理场在强化蒸发、精馏和气体吸收等气液传质过程中的研究进展,同时概述了物理场强化气液传质的热力学研究进展。分析表明,物理场强化气液传质在化工、环保和节能减排等领域具有广泛的应用前景,但目前的研究大多还处于实验阶段,其机理和各种因素对强化效果影响的研究还不够深入和完善。指出今后研究热点主要包括:继续探索物理场强化传质的作用机理,拓展其应用领域,并对过程中的瓶颈问题进行技术攻关;通过实验和热力学研究两种方法对不同种类物理场强化传质效果进行比较,以确定各种物理场的适用体系。

The action mechanisms of physical fields including magnetic field, electric field, electromagnetic field, ultrasonic field and high gravity are briefly introduced, respectively. Research progress of enhancement of gas-liquid mass transfer in evaporation, distillation and gas absorption by these physical fields is reviewed. The progress of thermodynamic study involved is also introduced. The enhancement by physical fields should have a wide application prospect in chemical industry, environmental protection, energy-saving and emission reduction. However, most of current studies are still in the experimental stage, and the researches on the influence of various factors on the enhancement and the mechanism involved are not deep enough. Exploring the enhancement mechanism, expanding the application areas, solving the bottleneck problem and comparing the enhancement effects of different physical fields by experiment and thermodynamic analysis to determine the applicability of each physical field should be the focus of future research.