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exhaust systems

Why do factories use PP plastic air ducts for exhaust?

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There are many reasons why factories use polypropylene (PP) plastic air ducts for exhaust, including the following:

  1. Corrosion resistance: PP plastic has excellent corrosion resistance and can resist corrosion from various chemicals, including acidic and alkaline exhaust gases. This makes PP plastic ducts ideal for use in environments that handle corrosive exhaust gases, whereas metal ducts may corrode and cause damage in these situations.
  2. Lightweight and easy to process: PP plastic is a lightweight material that is easy to handle, install and process. This makes it relatively easy to design and customize duct systems to meet the specific needs of different plants.
  3. Long Life: PP plastic air ducts generally have a long service life because they are not susceptible to corrosion, rust, or corrosive exhaust fumes. This reduces maintenance and replacement costs.
  4. Good sealing: PP plastic air duct can provide reliable sealing performance to prevent exhaust gas from leaking into the surrounding environment. This is critical to ensuring a safe factory environment, preventing harmful gas leaks, and meeting environmental regulations.
  5. Reduced Noise Transmission: Compared to metal ducts, PP plastic ducts generally reduce noise transmission because they do not transmit sound vibrations.
  6. Low thermal conductivity: PP plastic does not conduct heat, which helps maintain the temperature of the exhaust gas within the duct, while metal air ducts may conduct heat and require additional insulation measures.
  7. Renewable and recyclable: PP plastic is a recyclable material, which helps reduce resource waste and complies with the principles of sustainability.
Furniture factory ventilation duct

The appropriate material and duct design needs to be selected based on the exhaust type, operating conditions and needs of the specific plant, but PP plastic duct is generally an affordable and reliable solution, especially for plants that need to deal with corrosive exhaust gases.

Under what circumstances can PP plastic air ducts be used for ventilation?

Situations where polypropylene (PP) plastic ducts can be used for ventilation generally include the following situations:

  1. Corrosive exhaust gases: PP plastic has high corrosion resistance to many chemicals and corrosive gases, making it suitable for situations where these exhaust gases are treated. This includes acidic exhaust gases, alkaline exhaust gases, organic solvents, etc.
  2. Chemical factories: PP plastic air ducts are often used in chemical factories because they can withstand corrosion from chemicals and ensure that exhaust emissions comply with environmental regulations.
  3. Laboratory: Laboratories usually need to discharge various chemical waste gases, including acidic and corrosive waste gases. PP plastic air duct can provide a safe and reliable exhaust exhaust system.
  4. Electroplating workshop: The waste gas generated in the electroplating workshop usually contains the vapor of acidic or alkaline chemical waste liquid, and PP plastic air ducts can be used to discharge these waste gases.
  5. Wastewater treatment: Wastewater treatment plants often deal with corrosive gases, such as chlorine, and waste gases containing chemicals. PP plastic air duct has good applications in these environments.
  6. Pickling and etching: During metal processing, pickling and etching operations usually produce acidic waste gases, and PP plastic air ducts can be used to discharge these waste gases.
  7. High-temperature environment: PP plastic has good tolerance to high temperatures, so it can be used when high-temperature exhaust gas needs to be discharged.
PP air ducts are widely used

Appropriate materials and duct design need to be selected based on specific exhaust gas type, temperature, pressure and other operating requirements. In addition, safety and environmental regulations are important considerations in selecting air duct materials. In any case, it is recommended to work with professional engineers and designers to ensure that the exhaust ventilation system meets relevant regulations and the specific needs of the plant.

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