1. Key Features of Copper Pall Rings

Material: Copper Pall Rings are made of copper or copper alloys, offering excellent thermal conductivity and corrosion resistance in certain environments.

Structure: Similar to other Pall Rings, they feature an open-ring design with inward-bent flaps, enhancing gas-liquid contact and reducing pressure drop.

Advantages:

High Efficiency: The structure improves mass transfer and separation efficiency in stripping columns.

Thermal Stability: Copper's high thermal conductivity makes it suitable for heat-sensitive or temperature-dependent processes.

Corrosion Resistance: Copper resists corrosion in non-oxidizing and mildly acidic/alkaline environments, though it may not be ideal for highly corrosive media (e.g., strong acids).

2. Applications in Stripping Columns

Stripping of Volatile Components: Effective for removing light hydrocarbons, CO₂, or VOCs from liquids.

Wastewater Treatment: Used in stripping columns to remove organic contaminants or odorous compounds.

Petrochemical and Chemical Processing: Suitable for refinery operations, gas purification, and solvent recovery.

3. Comparison with Other Materials

vs. Stainless Steel Pall Rings:

Corrosion Resistance: Stainless steel (SS304, SS316) is more resistant to oxidizing acids and chlorides than copper.

Cost: Copper Pall Rings may be more expensive than stainless steel but offer better thermal conductivity.

vs. Ceramic Pall Rings:

Mechanical Strength: Copper is more durable than ceramic, which is brittle.

Temperature Tolerance: Ceramic is better for high-temperature applications (> 500°C), while copper is limited to lower temperatures (~200–300°C).

vs. Plastic Pall Rings:

Chemical Resistance: Plastic (e.g., PP, PVC) is more resistant to strong acids/bases, while copper may corrode in such environments.

Thermal Conductivity: Copper is far superior, making it better for heat-exchange applications.