HYDRODYNAMIC CHARACTERISTICS AND PERFORMANCE OF THE NEW 'TONGUE VALVE TRAY'.

The present work was undertaken to assess the characteristics of the new 'Tongue Valve Tray' in comparison with the Glitsch type tray. Results indicated that the pressure drop of the dry tongue valve tray is slightly lower than that of the Glitsch type. The holdup could be stabilised, especially at higher gas velocities, with rearrangement of the valves to counteract the effect of liquid splashing out of the tray. The liquid mixing was higher for the tongue valve tray than for the Glitsch type. Despite the adversary dispersion effects, the real mass transfer coefficient for the former tray was still higher. The holdup as well as the coefficient of longitudinal mixing were correlated. Furthermore, a relation was obtained for calculating the real mass transfer coefficient in which the driving force was corrected to take into account the back mixing in the liquid phase.

HYDRODYNAMIC CHARACTERISTICS AND PERFORMANCE OF THE NEW 'TONGUE VALVE TRAY'. Academic Article