Research progress of gas-liquid mass transfer enhancement in high gravity field

Gas-liquid mass transfer processes are widely used in chemical industry. Studies of gas-liquid mass transfer enhancement have vital significance in many aspects, including shortened process, reduced equipment size, lower investment, lower operating cost, etc. High gravity (also called Higee) technology with a core device of rotating packed bed (RPB) is one of the effective technologies for mass transfer enhancement. Based on research and development in 30 years, significant progress has been made in high gravity process intensification technology in fundamental and application researches, especially in these processes limited by mixing or mass transfer rate. According to rotor structure, such as block packing rotary rotor, two rotating disks rotor, rotating and static disk combined rotor, research progress and theoretical achievements about mass transfer intensification in RPBs are reviewed. The topics of future development of gas-liquid mass transfer enhancement are also suggested.