Plastic Pall Ring is a kind of high-efficiency packing widely used in gas-liquid contact equipment such as distillation towers. Its design optimization and material properties enable it to perform well in medium and low temperature distillation processes in the fields of chemical industry, environmental protection, etc.

一、Structural design and working principle of plastic pall ring

The plastic pall ring improves the structure of the traditional raschig ring, opens a multi-layer rectangular window on the side walls, and bends the window blades to the center to form a tongue.

Three core advantages of plastic pall ring design:

1. Increase specific surface area: The window and tongue structure greatly increase the internal surface utilization of the filler, and the gas-liquid contact area increases by about 30%-50%.

2. Optimize fluid distribution: The uniformly distributed pores reduce groove and wall flow phenomena, and the gas forms more stable turbulence as it passes through the filler layer.

3. Reduce pressure drop: The open-pore structure reduces gas resistance by 20%-40%, and is suitable for large-flux distillation systems.

二、 pall ring application case

Ethanol distillation: A distillery uses Φ38mm PP pall ring, which has a 60% increase in processing volume and a 22% reduction in energy consumption.

Hydrochloric acid purification: Chemical companies use CPVC pall rings and operate continuously at 110℃ for 3 years without corrosion.

Vacuum distillation: The pharmaceutical industry uses PVDF pall ring to achieve a vacuum degree of -0.098MPa, and the product purity reaches 99.5%.