PTFE Coated Corrugated Packing is a specialized internals material engineered for high-temperature chemical applications. Comprising a corrugated substrate (often metal or plastic) with a PTFE coating, it combines structural efficiency with exceptional chemical and thermal resistance, addressing the unique challenges of harsh industrial processes.
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Key Performance Advantages
The packing’s corrugated design creates a high specific surface area, typically 150-350 m²/m³, which significantly enhances mass and heat transfer efficiency in columns. The PTFE coating, with its ultra-low surface energy and broad chemical resistance, acts as a barrier against strong acids, alkalis, solvents, and oxidizing agents. This coating also ensures the packing maintains dimensional stability even at temperatures up to 260°C (500°F), outperforming conventional materials like ceramic or uncoated metal in thermal cycling scenarios.Product Specifications and Application Fields
Available in standard and custom configurations, the packing is crafted using substrates such as 316L stainless steel or polypropylene, with PTFE coatings applied via sintering or plasma spraying for uniform adhesion. In chemical processing, it is widely used in distillation towers for alcohol production, acid purification systems, and high-temperature reaction columns. In pharmaceutical manufacturing, its inert nature meets strict purity requirements, while in petrochemical refineries, it handles corrosive gases and liquids in catalytic reforming units.FAQ:
Q1: What is the maximum continuous operating temperature of PTFE Coated Corrugated Packing?
A1: Up to 260°C (500°F) under normal conditions, with short-term tolerance reaching 300°C (572°F) in inert atmospheres.
Q2: Can this packing be used with strong oxidizing agents like nitric acid?
A2: Yes, the PTFE coating provides robust resistance to all concentrations of nitric acid, sulfuric acid, and other aggressive chemicals.
Q3: How does it compare to ceramic packing in high-temperature applications?
A3: It offers superior thermal shock resistance and lower weight, reducing column load, while PTFE’s inertness eliminates contamination risks compared to ceramic materials.
