Main Applications of Plastic Fillers

Plastic packing materials, with their advantages of broad corrosion resistance, low cost, and light weight, are widely used in chemical, environmental protection, and water treatment fields, typically operating at temperatures below 100℃.

Chemical Field

Organic Solvent Distillation and Recovery: Resistant to most organic solvents, no metal ion contamination; PP/PVDF is used for systems involving alcohols, ketones, esters, and aromatics.

Distillation and Absorption of Corrosive Acids such as Hydrochloric Acid: Resistant to hydrochloric acid corrosion; PP/PE is the standard choice for HCl absorption towers.

Fluoropolymer Treatment: PVDF's excellent fluoride resistance makes it the only packing material choice for fluoride-containing media.

Environmental Protection and Tail Gas Treatment

Wet Desulfurization (Flue Gas Desulfurization): Resistant to chloride ions and impact; PP/PE is used in spray towers and scrubbing towers.

VOCs Scrubbing: Resistant to organic solvents, lightweight and safe. PP/PVC packing is used in packed scrubbing towers.

Acid mist purification towers: resistant to HCl, H₂SO₄ acid mists; PP/PVC is a common choice.

Water treatment

Cooling towers: lightweight, high porosity, low pressure drop; PP/PVC water spray packing is the absolute mainstream.

Degassing towers: water corrosion resistant, low cost; used to remove dissolved gases such as CO₂ and O₂.

Biofilters: large specific surface area, good biocompatibility; PP/PE is used as a biofilm carrier.

Summary

Plastic packing is mainly used for: distillation absorption of corrosive acids such as hydrochloric acid, organic solvent systems, wet desulfurization, acid mist purification, cooling towers, and water treatment degassing. PP is the most common, while PVDF is used in high-temperature corrosive conditions. Within the applicable temperature range, plastic is the most cost-effective choice.