Polyester corrugated packing is a specialized structured packing material designed for low-temperature chemical applications. Composed of high-purity polyester, its corrugated geometry ensures efficient mass transfer, chemical stability, and resistance to extreme cold, making it ideal for cryogenic processes in industries like petrochemicals and gas processing.
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Material Properties and Structural Design
Polyester corrugated packing’s performance stems from optimized material properties and structural design. The base material, a high-molecular-weight polyester resin, exhibits exceptional low-temperature tolerance, maintaining structural integrity even at -70°C. Its chemical inertness resists corrosive media such as acids, alkalis, and organic solvents common in cryogenic systems. Structurally, uniform 30°-45° corrugation angles, 65-85% porosity, and 150-250 m²/m³ specific surface area maximize mass transfer efficiency while minimizing pressure drop, critical for low-temperature separation columns.
Q1: What is the maximum operating temperature for polyester corrugated packing?
A1: It operates safely down to -70°C, verified in cryogenic test conditions with long-term stability.
Q2: How does it compare to metal or ceramic packing in low-temperature applications?
A2: Polyester offers lighter weight, lower thermal conductivity (reducing heat loss), and better corrosion resistance than metal, and is more cost-effective than ceramic, balancing performance and affordability.
Q3: What maintenance is required for optimal performance?
A3: Minimal maintenance—periodic inspection for physical damage and cleaning with compatible solvents ensures 5-8 years of reliable service.
