P84 Filter Bags
P84 filter bags are a flame-retardant, thermally stable fiber filtration material. Under continuous exposure to 240°C, P84 polyimide fiber retains its mechanical integrity, with a maximum operating temperature of 260°C.
- Excellent High-Temperature Resistance
- Outstanding Chemical Stability
- High Filtration Efficiency
- Good Oxidation Resistance
- Easy to Clean and Maintain
Industry-Leading P84 Filter Bag Manufacturer
As a leading manufacturer of high-temperature filtration solutions, DARKO produces premium P84 filter bags engineered with polyimide fibers to deliver exceptional 260°C continuous heat resistance and 99.99% filtration efficiency. Our P84 bags are the ideal choice for extreme applications in cement kilns, waste incineration plants, and chemical processing facilities across 30+ countries, offering superior flame retardancy, acid resistance (pH 1-12), and 50% longer service life compared to conventional fiberglass bags.
Reliable Material Transportation Solutions
Ultimate chemical resistance (handles all acids/alkalis) with 260°C continuous operation.
Cost-effective workhorse for temperatures below 130°C with 99.5% efficiency.
Excellent oxidation resistance at 190°C, ideal for coal-fired power plant FGD systems.
- Technical Specifications
- Key Advantages
- Top Applications
| Parameter | Value | Unit | Remarks |
|---|---|---|---|
| Product Code | P84-A550 SG | – | Scrim-supported construction |
| Material Composition | |||
| – Fiber | 100% P84 | – | Polyimide fiber |
| – Scrim (Reinforcement) | 100% PTFE | – | Spun-yarn scrim backing |
| Physical Properties | |||
| – Weight | 550 | g/m² | Medium-weight felt |
| – Thickness | 2.3 | mm | Standard thickness |
| – Density | 0.24 | g/cm³ | Low density for better airflow |
| – Air Permeability | 170 | L/dm²/min | High airflow capacity |
| Mechanical Strength | |||
| – Tensile Strength (MD) | 800 | N/5cm | Machine direction |
| – Tensile Strength (CD) | 1000 | N/5cm | Cross direction (stronger) |
| – Elongation @50N | 0.03 | – | Both directions |
| – Burst Strength | 261 | N/cm² | Puncture resistance |
| Temperature Resistance | |||
| – Continuous Operation | 240 | °C | Long-term use |
| – Peak Operation | 260 | °C | Short-term exposure |
| – Hot Shrinkage | ≤2% | – | At max operating temp |
| Chemical Resistance | Rating | Scale | (1=Excellent, 4=Poor) |
| – Acid Resistance | 2 (Good) | – | |
| – Alkali Resistance | 3 (Fair) | – | |
| – Hydrolysis Resistance | 2 (Good) | – | |
| – Oxidation Resistance | 2 (Good) | – | |
| – Organic Solvent Resistance | 2 (Good) | – | |
| – Abrasion Resistance | 2 (Good) | – | |
| Post-Treatment | Heat setting, singeing | – | Enhanced stability |
✅ Extreme Heat Resistance – 260°C continuous, 300°C (572°F) peak (2X longer lifespan than fiberglass)
✅ Natural Chemical Resistance – Withstands pH 1-12, ideal for high-SOx/NOx flue gas
✅ 3D Filtration Mechanism – Irregular fiber structure traps PM2.5 at 99.99% efficiency
✅ Self-Cleaning Surface – Non-smooth fiber morphology reduces dust buildup, cutting pulse-jet energy use by 30%
✅ Oxidation & Hydrolysis Resistance – Stable in high-oxygen (O₂>8%) and humid (above dew point) environments
✔ Cement Industry – Kiln exhaust (250-280°C high-SOx gas)
✔ Waste Incineration – Filters dioxins, HCl, SOx in toxic flue gas
✔ Petrochemical – FCC unit regeneration gas dust removal
✔ Steel & Metallurgy – Sintering plant/coking furnace high-temp gas cleaning
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Why Choose the P84 Filter Bag?
- High Performance: The P84 filter bag offers excellent filtration efficiency, ensuring gas emissions meet environmental standards.
- Durability: Its outstanding high-temperature and chemical resistance make it perform well under harsh conditions.
- Cost-Effectiveness: Reduces maintenance and replacement frequency, saving operational costs and enhancing overall economic benefits.
- Versatility: Suitable for multiple industries and applications, providing high flexibility.
Maintenance and Care
- Regular Inspections: It is recommended to check the filter bag status monthly and replace worn or damaged bags promptly.
- Cleaning Frequency: Depending on actual usage, regular cleaning is advised to maintain optimal filter performance.
- Maintenance Records: Establish maintenance records for the equipment and filter bags to track performance changes for future management.
The P84 filter bag is a high-efficiency, durable filtration solution suitable for various industrial applications. Its advanced design and technology can effectively enhance production efficiency and improve working environments. If you would like to learn more about the product or obtain technical support, please feel free to contact us.
Under normal use and maintenance, the lifespan of the P84 filter bag is typically 2-4 years, depending on the working environment and type of dust.
The P84 filter bag can be cleaned using high-pressure air or, in special cases, chemical cleaning agents, ensuring no damage to the bag material.
The P84 filter bag is suitable for various industrial dust collectors, pulse bag filters, and other gas filtration equipment.