In response to the bottleneck of the distillation tower efficiency, a certain refinery used metal pall rings to replace traditional fillers to achieve a significant improvement in the purity of the top products (the specific data has not been disclosed, but the case shows that the output of the cleaning oil fraction after similar transformations doubled), and the pressure drop was reduced by 30%. This achievement stems from the revolutionary optimization of the gas-liquid mass transfer efficiency of Ball Ring's unique structural design.

Core technical advantages of metal pall ring

1. Structural innovation: three-dimensional mass transfer channel

Design of window holes and tongue: Two rows of interlaced rectangular window holes are opened on the ring wall, and the window leaves are bent inward to form a 30°~45°inclination tongue, which converts a single annular runner into a "ring wall-window leaf-ring core" three-dimensional network, with a specific surface area of 20%~30% higher than that of the Metal cascade-mini rings (such as the DN50 Ball quarter-on-month surface area reaches 105m²/m³).

Optimization of liquid distribution: The tongue guides the liquid to migrate to the center of the filler, eliminating the phenomenon of "edge enrichment-center liquid lean" of traditional filler, and the wetting rate increases to more than 92%, significantly reducing the wall flow effect.

2. The mass transfer efficiency leap

The turbulence effect is enhanced: the open-hole structure forces the gas-liquid phases to frequently turn, the contact frequency is increased by 25%, and the mass transfer coefficient is increased by about 30%.

Expanding operational elasticity: When the gas-liquid load fluctuates, the attenuation rate of mass transfer efficiency is 15% lower than that of the step ring, which is especially suitable for refinery fluctuations in operating conditions.

3. Pressure drop control

Low resistance flow channel: The porosity rate (30%~40%) and the void rate (≥90%) are optimized in coordination, and the pressure drop at the same gas speed is only 60%~70% of that of Lassi Ring.

The energy-saving effect is significant: After the renovation of the atmospheric pressure tower of a certain refinery, the maximum air speed increased from 1.2m/s to 1.5m/s, and the pressure drop decreased by 18%, and the fan energy consumption decreased by 20%.