Pall Ring

Plastic Tower Packing (PallRing,Int.Saddles & Tell

Plastic Pall Ring is versatile. This product was advanced on the basis of Plastic Raschig Ring, and compared with it, both of them have similar cylindrical dimensions but the Plastic Pall Ring 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.

Available in MOC : Polypropylene , PPH etc.

• 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

A variety of different sizes of products provide the ability to optimize capacity and efficiency based on different application requirements, and the application temperature in media ranges from 60oC to 150oC (Depends up on MOC temp range change)

Hold-up and Two-phase Contact Promotes highly efficient two-phase contact and distribution; 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. Versatility Open, cross-linked design provides a highly efficient used of the ring’s surface area; Robust to variations in liquid and vapour distribution. Mechanical Strength Its internal cross-structure of diametrical spars make it mechanically robust and suitable for use in deep packed beds. Materials: Plastic tower packings are made of 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). Technical Data of standard available size Polypropylene Pall Ring: Size (mm) Surface area (m2/m3) Void volume (m3/m3) Bulk number (n/m3) Package density (kg/m3) F factor (m-1) 25 mm 209 98 53500 82 239 38 mm 117 95 15800 54 220 50 mm 100 93 6500 56 127 76 mm 73 90 1980 58 94 *Note: The above data sub to the material PP. TYPICAL PROPERTIES OF POLYPROPYLENE PHYSICAL   Property Homopolymer Density (lb/in3), (g/cm3)  0.0333, 0.9053 Water Absorption, 24 hrs (%) < 0.01 MECHANICAL   Tensile Strength (psi) 4,800 Tensile Modulus (psi) 195,000 Tensile Elongation at Yield (%) 12 Flexural Strength (psi) 7,000 Flexural Modulus (psi) 180,000 Compressive Strength (psi) 7,000 Compressive Modulus (psi) - Hardness, Rockwell 92 IZOD Notched Impact (ft-lb/in) 1.9 THERMAL   Coefficient of Linear Thermal Expansion (x 10-5 in./in./oF) 6.2 Heat Deflection Temp (oF/oC), at 66 psi, at 264 psi 210/99, 125/52 Melting Temp (oF/oC) 327/164 Max Operating Temp (oF/oC) 180/82 Thermal Conductivity (BTU-in/ft2-hr-oF), (x 10-4 cal/cm-sec-oC) 0.76-0.813, 2.6-2.83 Flammability Rating HB ELECTRICAL   Dielectric Strength (V/mil) short time, 1/8 inch thick 500-660 Dielectric Constant at 1 kHz 2.25 Dissipation Factor at 1 kHz 0.0005-0.0018 Volume Resistivity (ohm-cm) at 50% RH 8.5 x 1014 Arc Resistance (sec) 160