Pall Rings in Column

When the liquid is spilled onto the packing, some flow along the outer wall, some flow through the small window to the inner wall, and some flow along the blade to the center. In this way, the dispersion of the liquid increases, and the utilization rate of the inner surface of the packing is improved. The mass transfer efficiency increases with the increase of the two-phase contact area. The blade retains the original wall surface, and adds a new surface of the incision, so its specific surface area is larger than the opening window.

Stainless steel Pall ring has a variety of specifications, the commonly used specifications in the packing tower are 6mm/10mm/13mm/25mm/50mm, etc., which is widely used in the separation tower, absorption tower, carbon dioxide degassing tower, acid fog purification tower, ozone contact reaction tower and other packing towers. It is a kind of open-hole ring type packing with equal height and diameter, which opens a window hole with an internal protruding tongue blade on the ring wall, and the area of the opening hole accounts for about 30% of the total area of the ring wall.

Without increasing the surface area of the packing, the gas-liquid two-phase flow in the packing layer is greatly improved, and the fluid dynamics and mass transfer performance of the packing are improved.