Chemical Engineering & Technology, Vol.42, No.6, 1199-1204, 2019
Hydrodynamic Characteristics in the Counter-Flow Total Spray Tray
The capacity of a column is limited by the distribution of gas and liquid, especially in case of large-diameter cross-flow trays. In order to solve the bottleneck, a new counter-flow tray named total spray tray (TST) was put forward. Taking air/water as medium, the hydrodynamic behavior, including the pressure drop, weeping, entrainment, and clear liquid height, was investigated, in comparison with the CTST, which had a higher capacity. Based on experimental data, the correlations of the TST pressure drop were established by regression analysis method. The experimental results show that the TST has a lower wet pressure drop and less weeping. More interestingly, its clear liquid height can be self-adjusting with the variation of the gas kinetic energy factor, which is beneficial to improving the capacity.