Comparison of raschig ring with pall ring and step ring

New fillers such as pall rings and step rings significantly improve mass transfer efficiency and flux through improved structures (such as openings and adding inner fins), with lower pressure drops, but slightly higher costs.

Ceramic raschig rings still have advantages in corrosion resistance and cost, but have poor quality transfer performance.

Comparison of raschig ring and metal filler

Metal fillers (such as stainless steel orifice corrugated fillers) have high quality transfer efficiency and reduced pressure, but have poor corrosion resistance, high cost, and are prone to scaling.

Ceramic raschig rings are more suitable for highly corrosive and high-temperature scenarios.