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
What Is P84 Polyimide Filter Bag?
Types of Filter Bags
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
- Custom Post-Treatment Types of P84 Dust Filter Bag
- Top Applications
- P84 Filter Bag VS Competitive High-Temp Filter Bags
| 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
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PTFE laminated P84 filter bag: The most popular model for MSW incineration. PTFE coating blocks ultrafine dust below 1μm, realizes surface dust peeling, reduces pulse cleaning frequency and extends service life by 30%.
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Water and oil repellent P84 filter bag: For high humidity biomass boiler flue gas, prevent dust caking and bag hardening caused by condensed water.
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Acid and alkali resistant P84 dust collector bag: Special acid neutralization finishing for sulfur-containing flue gas in lime kiln and asphalt plant production lines.
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Anti-static P84 filter bag: Added conductive carbon fiber, compliant with ATEX standard for carbon black plant explosive dust filtration.
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Heat-calendered P84 needle felt bag: Dense surface finishing for low-emission industrial dust emission standards below 10mg/Nm³.
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Silicone coated P84 filter sleeve: Anti-adhesion treatment for sticky aluminum smelter oxide dust.
✔ 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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P84 vs PPS filter bag: PPS fails at flue gas oxygen content over 12% and chlorine-rich conditions; P84 tolerates oxygen up to 21% and high chlorine flue gas, ideal for waste incineration
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P84 vs Aramid(Nomex) filter bag: Aramid max continuous temp only 204℃, poor alkali resistance; P84 bears 240℃ continuous heat and better alkaline corrosion resistance for cement kilns
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P84 vs Fiberglass filter bag: Fiberglass has brittle fibers, easy abrasion damage; P84 features strong tensile strength, no breakage under frequent pulse cleaning
Related Products
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.