The height-to-diameter ratio of this packing is approximately half that of a pall ring. One end is designed with a conical flange structure, which changes the contact mode from linear to point contact during packing, thereby reducing gas flow resistance and increasing porosity (85%-97%), and enhancing flux and mass transfer efficiency. The material difference affects the internal structure: the metal step ring adopts a tongue-shaped design that bends towards the blade shape, while the plastic and ceramic materials are divided into cross-shaped or grid-shaped internal ribs. By optimizing gas-liquid distribution and pressure drop control, its mass transfer efficiency is improved by 20%-50% compared to traditional packings, and it is suitable for applications such as absorption towers, desulfurization towers, and scrubbing towers.

The height-to-diameter ratio of the step ring is only half that of the pall ring, and a conical flange is added at one end of the ring, which reduces the resistance of gas passing through the bed layer and increases the flux. The strength of the filler is also higher. Due to its structural characteristics, the fillers in the bed layer mostly have point contact with each other. This not only increases the void fraction and reduces the pressure drop, but also forms a collection or dispersion point for the liquid to flow along the surface of the filler, promoting the renewal of the liquid film surface and the mixing of the liquid. This makes the gas-liquid distribution uniform, increases the gas-liquid contact surface and improves the mass transfer efficiency. It is generally made of plastic, ceramic or metal. The materials are different, and the structures are also different. The inner rib structure of the metal step ring is the same as that of the pall ring, with the tongue pieces bent in a blade-like shape; the inner rib structure of the plastic and ceramic step ring is similar to that of the plastic pall ring, and there are also cross-shaped and square-shaped types.

• Plastic Cascade Ring

• Metal Cascade Ring

• Ceramic Cascade Ring