Polyimide Filter Bag
Polyimide Needle Felt Filter Cloth, often referred to by the brand name P84, is a high-temperature resistant filtration material made from polyimide fibers.
Product Details
A Polyimide Filter Bag, also known as a P84 filter bag, is a type of filter bag used for industrial dust collection and air filtration. It is made from polyimide fibers, which provide the material with characteristics suitable for high-temperature applications. Here are some key points about Polyimide Filter Bags:
- High-Temperature Resistance: Polyimide filter bags are capable of withstanding high temperatures, often being able to operate continuously at temperatures below 260 °C (500 °F).
- Good Chemical Resistance: These filter bags offer resistance to a wide range of chemicals, making them suitable for use in environments with corrosive gases or chemicals.
- Effective Particle Collection: Polyimide filter bags can effectively collect micro particles, optimizing air quality with a small pressure difference.
- Applications: They are commonly used in industries such as metallurgy, cement production, waste incineration, and chemical processing where high-temperature flue gases need to be filtered.
- Durability: The material’s durability makes it an economical choice for long-term use in dust collection systems.
- Air Permeability: Polyimide filter bags have good air permeability, which helps maintain efficient airflow through the filtration system.
- Variants: There are different variants of polyimide filter bags available, which might be combined with other materials like PTFE (polytetrafluoroethylene) to enhance specific properties like acid resistance or to improve filtration efficiency.
These filter bags are an essential component for maintaining air quality and protecting equipment in industrial settings with challenging environmental conditions.
| Technical Parameters | ||||||
| Gram Weight (g/m²) | Thickness(mm) | Air Perm (m³/m².min) | Breaking Strength(N/20X5cm) | Elongation at Break(%) | ||
| Warp Direction | Weft Direction | Warp Direction | Weft Direction | |||
| 550 | 2.5 | 8-12 | ≥900 | ≥1200 | ≤25 | ≤40 |
| Continuous Temperature(°C) | Instantaneous Temperature(°C) | Acid Resistance | Alkali Resistance | Abrasion Resistance | Hydrolytic Stability | Post-Processing Method |
| 240 | 280 | Excellent | Good | Good | good | Singeing or Calendering or PTFE Soak or Heat Setting or Laminating |
The features of Polyimide Filter Bags, which are also known as P84 filter bags, include:
- High-Temperature Performance: Polyimide filter bags can withstand continuous operating temperatures up to 260 °C (500 °F), making them suitable for high-temperature industrial applications.
- Chemical Resistance: These filter bags are resistant to a wide range of chemicals, which allows them to be used in environments with acidic or alkaline gases and other corrosive compounds.
- Efficient Filtration: They are capable of capturing fine particulate matter effectively, ensuring clean air output and compliance with emission standards.
- Good Air Permeability: The fabric allows for adequate airflow through the filter, which helps to maintain the efficiency of the dust collection system while reducing the pressure drop across the filter.
- Durability: Polyimide fibers are known for their strength and stability, providing a long service life for the filter bags under proper operating conditions.
- Energy Efficiency: Due to their good air permeability and efficient filtration, these filter bags can contribute to lower energy consumption in the dust collection system.
- Customization: Polyimide filter bags can be tailored to meet specific industrial requirements, including size, shape, and construction design, to fit various types of dust collectors.
- Low Shrinkage Rate: Polyimide fibers exhibit a low shrinkage rate at elevated temperatures, which helps maintain the shape and integrity of the filter bags over time.
- Thermal Stability: The material retains its physical properties over a wide temperature range, providing consistent filtration performance.
- Versatility: These filter bags can be used in various industries, including power generation, cement manufacturing, incineration plants, and metal processing.
These features make Polyimide Filter Bags a preferred choice for industrial filtration applications where high temperatures and harsh chemical environments are present.