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Material: PBT, PE, PP, PVC, CPVC, and PVDF is a high diameter equal openings ring packing, each aperture tongue has five leaves, each leaf tongue ring center point bending up and down two layer aperture opposite position shifted. PVC pall ring opening area generally accounts for about 30% of the total area of the annular wall. As the plastic pall ring packing in a lot of ring wall aperture, so that the packing column of gas and liquid can freely pass from the aperture, the gas and liquid distribution layer of filler greater than Raschig rings improvement, especially in the inner surface of the packing rings easily wetted by the liquid, so that the inner surface can be fully utilized. Therefore, the same material, the same specifications as Pall ring packing, compared with Raschig rings not only has a larger capacity and lower pressure drop, and the separation efficiency of the column has increased operating flexibility has also been increased. Usually at the same pressure drop, the more processing power Pall rings Raschig rings increased by more than 50%; in the same capacity, the pressure drop is only half PVC pall rings Raschig rings.

Polypropylene is the most current thermoplastic in the production of tower packings. Due to its good resistance to chemicals at temperature up to more than 100℃, polypropylene is superior to polyethylene in most fields.

The basic property of Polypropylene PP

Density: 920kg/m3
Types used: Operational temperature range:
Polypropylene LTHA: up to +110℃
Polypropylene glass-fiber reinforced: up to + 140℃
Polypropylene alkaliproof: up to +110℃
Several special types on request
Cold-resistant : to -10℃ (depending on the type)

Resistant to :acids like hydrochloric acid and sulfuric acid bases like caustic soda solution and caustic potash solution salt solutions like sodium chloride, ammonium chloride alcohols, ketones like methanol, ethanol, acetone org. acids like formic acid, acetic acid

Not resistant to: strong oxidizing agents like oleum halogens like fluorine, chlorine, bromine halogenated hydrocarbons aromatic hydrocarbons

As to the resistance, the respective concentrations and temperatures are to be observed.