What is the advantage of pall ring tower packing?

Pall rings (Pall ring) is to open a window made of two layers of Raschig rings in the wall of the upper and lower layers staggered apertures. The window openings cut ring blade side wall connected to the mother, the other side of the ring bend, almost in the center of the docking ring, bending direction opposite upper and lower blade. Since opening, the ring inner and outer surfaces of communication and space, so that uniform distribution of liquid and gas, and therefore, the resistance, flux and mass transfer efficiency was significantly improved ring Bila Xi.

There are three main materials for pall ring packing: ceramic, metal, plastic and so on. Metal material: 304.316.316L. Carbon steel. 201.410 etc. Plastic materials: PP, RPP, CPVC, PVDF, PVC, PTFE, FEP, PFA, etc.

The advantages of plastic Pall ring packing: light weight, not fragile, heat-resistant, chemical-resistant, etc. Plastic PP Pall ring packing temperature tolerance range is 80℃; Plastic PVC Pall ring packing temperature tolerance range is 110℃; Plastic PTFE Pall ring packing temperature tolerance range is 220℃; PVDF Pall ring packing temperature tolerance The acceptance range is 150℃.

The advantages of ceramic pall ring packing: acid resistance, alkali resistance, heat resistance, good oxidation resistance and low price. Disadvantages: fragile, heavy, and inconvenient to install. Ceramic Pall ring packing is suitable for carbon dioxide degassing tower, acid mist purification tower, ozone contact reaction tower, etc.

Metal Pall ring packing has the advantages of moderate weight, not fragile, heat resistance, acid and alkali resistance, etc. Defects: Not resistant to strong acids and alkalis, and expensive. The temperature tolerance range of metal Pall ring packing is -196℃~800℃. The metal will melt into liquid at about 1000℃. This is the melting point temperature. The working temperature in the use of the packed tower should be lower than this temperature.

Pall ring as chemical tower packing is used widely , Chemshun can supply you wanted pall ring in different size and materials.