The demand for PVC Pall rings has been steadily rising
Release time：2025-11-04
As industries accelerate their green transformation and environmental regulations advance, PVC Pall Rings are experiencing steady market growth as high-efficiency mass transfer packing across chemical and environmental sectors. Recent industry data shows that China's plastic Pall Ring market reached RMB 4.86 billion in 2024, with PVC material accounting for 29.4% of this total—approximately RMB 1.43 billion—making it the second most widely used material after polypropylene.
The widespread adoption of PVC Pall Rings stems from their unique structural design and material properties. Featuring a composite structure with rectangular windows and inwardly curved tabs, these rings maintain structural integrity while enabling smooth fluid and gas passage between internal and external spaces—effectively eliminating "dead zones" common in traditional packing. With a specific surface area of 72–274 m²/m³ and a mass transfer unit height 20–30% lower than that of traditional Raschig rings, PVC Pall Rings can reduce required packing height by 15–25% for the same separation efficiency, significantly lowering equipment costs.
In terms of performance, PVC material offers exceptional acid resistance and corrosion durability, making it suitable for ambient-temperature acidic processing environments. Its void fraction of 88–95% ensures lower gas flow resistance and reduced risk of flooding under high gas velocities. This balance of efficient mass transfer and low-flow resistance has led to its broad application in chlor-alkali drying and purification towers, synthetic ammonia decarbonization and desulfurization systems, as well as petroleum refining processes including atmospheric-vacuum units and ethylbenzene separation. Additionally, their symmetrical structure promotes uniform stacking, significantly enhancing clog resistance and reducing blockage rates in wastewater treatment and solid-laden exhaust gas applications—thereby lowering maintenance requirements.
From a market perspective, PVC Pall Ring production is primarily concentrated in East, North, and South China, with the eastern region accounting for 43.2% of total national capacity—closely aligned with the distribution of downstream chemical parks and environmental projects. As green manufacturing policies under the 14th Five-Year Plan continue to be implemented, and initiatives such as urban wastewater treatment upgrades and industrial park centralized treatment projects advance, environmental engineering has become a major end-user of PVC Pall Rings, representing 41.3% of total demand. Emerging applications, including exhaust gas treatment in lithium battery industrial parks, are also creating new growth opportunities.
Industry analysis indicates that China’s plastic Pall Ring market is expected to exceed RMB 5.2 billion by 2025. PVC Pall Rings, with their cost efficiency and scenario adaptability, are projected to steadily increase their market share. Looking ahead, advancements in material modification technologies and smart manufacturing will be key industry priorities. Through optimized production processes and product structures, manufacturers will further enhance PVC Pall Rings’ suitability for corrosive conditions and high-precision separation tasks—supporting industrial energy conservation, emission reduction, and sustainable transformation.
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