Custom PTFE Pall Rings | Chemical-Resistant Random Tower Packing

Product Overview & Customization Options

PTFE (Polytetrafluoroethylene) Pall rings are high-efficiency random tower packings designed for aggressive chemical processing and high-temperature mass transfer applications. Featuring open-wall structures with internal bent fingers, they significantly increase available surface area, liquid-gas contact efficiency, and overall column throughput compared to traditional Raschig rings.

We supply standard and custom PTFE Pall rings manufactured to precise outer diameters, wall thicknesses, and interior blade geometries matching your column design requirements.

Key Product Features & Benefits

• High Mass Transfer Efficiency: Open cylindrical walls with inward-bent tabs facilitate uniform gas-liquid distribution and minimize channeling inside packed towers.

• Low Pressure Drop: The open area and internal void fraction reduce resistance to gas flow, lowering energy consumption and boosting tower capacity.

• Complete Corrosion Resistance: Inert to strong acids, alkalis, organic solvents, and halogen gases across a pH range of 0 to 14.

• Broad Temperature Tolerance: Retains structural stability and chemical resistance from -180°C to +260°C.

• Anti-Fouling & Low Friction: Non-stick fluoropolymer surface limits scaling, polymer buildup, and particulate adhesion for low-maintenance operation.

Technical Specifications & Custom Parameters

• Available Sizes: 16mm, 25mm, 38mm, 50mm, 76mm, or custom dimensions per technical drawings.

• Processing Methods: Precision machining, automatic lathe turning, and custom punch-forming.

• Material Grades: 100% Virgin PTFE for high chemical purity, or filled PTFE (glass fiber, carbon) for increased structural rigidity under heavy bed packing loads.

• Void Fraction: Typically > 90%, optimizing hydraulic performance and gas capacity.

Primary Applications

• Acid Gas Scrubbing: Scrubbing towers for $\text{HCl}$, $\text{HF}$, $\text{SO}_2$, and chlorine gas treatment.

• Chemical Distillation & Stripping: Solvent recovery, stripping units, and organic chemical separation columns.

• Absorption & Washing Towers: Corrosive gas absorption, tail-gas treatment, and air pollution control systems.

• Pharmaceutical & Fine Chemical Processing: High-purity gas-liquid contacting where metal contamination must be avoided.

Quality Control & Packaging

• 100% Visual & Dimensional Inspection: Checked for wall uniformness, tab integrity, burr-free edges, and outer diameter tolerances.

• Secure Bulk Packaging: Packed in reinforced bags or cartons to preserve structural geometry during international shipping and simplify tower loading.

Send us your required dimensions, packing volume, or drawings to receive a prompt technical review and price quote.