Pall Ring Plastic introduction
Pall ring plastic is made from heat resistant and chemical corrosion resistant plastics, including polyethylene (PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chloridized polyvinyl chloride (CPVC) and polyvinylidene fluoride (PVDF).
An advance on the Raschig Ring, the Pall Ring has similar cylindrical dimensions but has two rows of punched out holes, with fingers or webs turned into the centre of the cylinder, which significantly increases the performance of the packing, in terms of throughput, efficiency and pressure drop.
Pingxiang manufacturer of tower packings
can provide pall ring in a variety of plastic, such as PP, Polypropylene, PVC, PVDF, HDPE and Glass Filled Polypropylene etc.
It has features such as high free volume, low pressure drop, low mass-transfer unit height, high flooding point, uniform gas-liquid contact, small specific gravity, high mass transfer efficiency and so on, and the application temperature in media ranges from 60 to 150.
For these reasons it is widely used in the packing towers in petroleum industry, chemical industry, alkali-Chloride industry, coal gas industry and environmental protection, etc
Features of Pall ring plastic:
Pall ring Plastic are suited in low pressure drop, high capacity applications, and raschig rings has range of sizes allows the tower to operate at an optimum efficiency and throughput. With the character high degree of randomness, consistent ratio of free and blocked passages, independent of orientation, plastic pall ring also has large surface area, the volume ratio augments the rate of liquid film surface renewal to improve mass transfer. Plastic raschig rings’ internal cross-structure of diametrical spars make it mechanically robust and suitable for use in deep packed beds. Plastic pall ring could also promote highly efficient two-phase contact and distribution with a relatively high liquid hold-up promotes high absorption efficiencies, especially in cases where the reaction rates are slow, uninterrupted and consistent passages for gas and liquid flow.
Pall Ring Plastic size:
16mm（5/8"）, 25mm （1″） ,38mm（1.5″）,50mm（2″）,76mm（3″）
Capacity versus Pressure Drop
• Most suited in low pressure drop, high capacity applications;
• A range of sizes allows the tower to operate at an optimum
efficiency and throughput;
• High degree of randomness;
• Consistent ratio of free and blocked passages, independent
• Large surface area : volume ratio augments the rate of
liquid film surface renewal to improve mass transfer.
Application of pall ring plastic
Pall ring plastic is widely used in absorption, scrubbing, and stripping services, versatile alternative to metal pall ring, all kind of separation, constant decompress tower plants, compounding ammonia plant, decarbonization plant, separation of ethylbenzene, seperation of isooctane or methylbenzene.
pall ring Plastic is versatile, and plastic pall ring is an advance on the raschig ring. The plastic pall ring has similar cylindrical dimensions as plastic raschig ring, but it has two rows of punched out holes, with fingers or webs turned into the centre of the cylinder, which significantly increases the performance of the packing.