Polyester Filament Yarn Dehumidification Systems

Polyethylene Terephthalate (PET) is a class of polymers produced from MEG and PET, with polyester yarn being a major product. About 40% of the world's polyester manufacturing is used for polyester yarn production. Polyester is widely used in the textile industry for filament yarn, polyester resin, and PET. It is used in various everyday items like insulation tapes, packing tapes, mattress sheets, draperies, curtains, conveyor belts, ropes, and tire fabrics. High-tenacity polyester yarns are also used in conveyor belts, ropes, and tire fabrics.

The dehumidification system

PET manufacturing uses a drying or dehumidification device using polyester filament yarns. This device includes a filter, drying device, electric heater, and dryer based on adsorption. The air is dried, heated, and stabilized before reaching the lowest dew factor stage. The presence of moisture in the air can cause issues such as corrosion, damage to equipment, product quality issues, and equipment malfunction. Adsorption drying is a popular and environmentally friendly method for air drying, using strong adsorbents like silica gel, activated alumina balls, and molecular sieves. These hygroscopic substances adsorb moisture from the moist air, requiring regeneration when water vapour is absorbed. Most air dryers work on adsorption and typically consist of two drying vessels. Molecular sieves are the most commonly used adsorbents for dehumidification in polyester fiber yarn manufacturing. Sorbead India, an international provider of adsorbents and desiccants, offers a wide range of molecular sieves in India, each with varying molecular methods, water adsorption potential, and regeneration temperature. Activated alumina is another effective desiccant, trapping moisture on its floor and not swelling or decreasing when immersed in water.



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