EN
100% P84 Polyimide Filter Bag High Temperature Anti-corrosion Industrial Waste
Our 100% pure P84 polyimide filter bags are made of unique irregular cross-section fiber, which has incomparable fine dust capture ability compared with circular fiber filter materials. It stably operates at 240℃ continuously and withstands instantaneous 260℃ high temperature, featuring absolute zero hydrolysis performance, never powdering or deforming in long-term high-temperature and high-humidity flue gas environment. P84 fiber owns excellent chemical stability, resisting acid, alkali and oxidative corrosive flue gas, solving the aging and brittle failure problems of PPS and FMS filter bags in humid corrosive working conditions. The special fiber structure forms a dense three-dimensional filtration layer, achieving 99.99% ultra-high efficiency interception for 0.2μm ultra-fine dust. With stable air permeability and excellent dust release performance, it avoids dust embedding and bag clogging, maintaining long-term low-resistance operation. It is the preferred high-end filter material for waste incineration, power plant and chemical high-humidity and corrosive flue gas dust removal.
Description
Product Standard Parameters
Parameter Item |
Technical Specification |
Material |
100% Pure P84 (Polyimide) Needle Felt |
Fabric Weight |
500g/㎡ / 550g/㎡ / 600g/㎡ (Customizable) |
Filtration Precision |
0.2μm |
Filtration Efficiency |
99.98% ~ 99.99% |
Working Temperature |
Continuous: ≤240℃, Instant: 260℃ |
Core Performance |
Irregular cross-section fiber, ultra-high fine dust capture, zero hydrolysis, acid & alkali resistance, anti-aging |
Chemical Resistance |
Excellent resistance to acid, alkali, oxidation and high moisture flue gas, pH 2~12 |
Air Permeability |
1.6~3.2 L/m²/s (200Pa) |
Application Scenarios |
Waste incineration plant, power plant boiler, chemical high-humidity flue gas, metallurgy, asphalt mixing plant |
Post-treatment |
Singeing, calendering, high-temperature resistant treatment, optional PTFE membrane lamination |
Customization Service |
Custom diameter, length, bag mouth reinforcement and sewing process |
Key product selling points and advantages.
1. Unique Irregular Cross-section Fiber, Super Fine Dust Capture
EN：P84 adopts special irregular cross-section fiber structure, which greatly increases fiber specific surface area and dust contact area. It captures ultra-fine dust that ordinary circular fiber filter bags cannot intercept, realizing ultra-low emission effect.
2. Zero Hydrolysis Performance, No Powdering in High Humidity Flue Gas
EN：P84 polyimide material has inherent zero hydrolysis characteristics. It will not swell, pulverize or break in long-term saturated high-humidity flue gas, completely solving the fatal defect of PPS filter bag hydrolysis and powdering.
3. Stable High Temperature Resistance, No Thermal Deformation
EN：Supports 240℃ long-term stable operation and 260℃ instantaneous temperature resistance. The fiber structure is stable without shrinkage, embrittlement or strength attenuation under long-term high-temperature flue gas scouring.
4. Excellent Acid & Alkali Corrosion Resistance, Strong Anti-oxidation
EN：It has excellent chemical inertness for acidic, alkaline and oxidative flue gas in waste incineration and chemical industries. It effectively resists corrosive medium erosion and maintains intact filtration performance for a long time.
5. Dense Three-dimensional Filtration, Stable Low-resistance Operation
EN：The three-dimensional staggered fiber structure forms a uniform and dense filter layer, ensuring high filtration efficiency while maintaining stable air permeability. No dust embedding and no bag clogging, keeping low pressure drop operation all year round.
6. Super Long Service Life, Reduce Long-term Operation Cost
EN：Anti-aging, anti-fatigue and anti-corrosion performance are far better than PPS and FMS filter bags. The service life is 2-3 times that of ordinary high-temperature filter materials, greatly reducing replacement frequency and maintenance costs.
Explanation and answers regarding incomplete dust removal.
Q1：PPS filter bags are prone to hydrolysis and pulverization in high humidity flue gas of power plants and incinerators, leading to frequent damage?
EN Solution：PPS material has inherent hydrolysis defect, and it will gradually pulverize and fail in high-temperature and high-humidity flue gas within 6-12 months. Our P84 filter bag achieves true zero hydrolysis, never powdering or swelling in saturated humid environment. The fiber structure remains permanently intact, completely solving the problem of short service life caused by hydrolysis.
Q2：A large amount of ultra-fine dust in incineration flue gas penetrates ordinary high-temperature filter bags, causing exhaust smoke and unqualified emission?
EN Solution：Ordinary circular fiber filter bags have limited dust contact area and poor ultra-fine dust capture capacity. Our P84 irregular cross-section fiber increases dust holding area in all directions, accurately intercepting 0.2μm ultra-fine dust with 99.99% high efficiency. The exhaust gas is clean and meets ultra-low emission standards.
Q3：FMS and PPS filter bags age rapidly and cause serious dust leakage under acid-base corrosive flue gas conditions?
EN Solution：PPS and FMS materials have weak resistance to strong acid, alkali and oxidation flue gas, and are easy to embrittle and crack. Our P84 polyimide material has excellent chemical stability, resists various corrosive media erosion, and maintains stable filtration performance in harsh chemical flue gas environments.
Q4：Filter bags are easy to clog in high temperature and high humidity working conditions, resulting in continuously high equipment pressure difference?
EN Solution：Ordinary filter materials have rough fiber gaps where fine dust is easy to embed. P84 three-dimensional dense fiber structure realizes deep gradient filtration, dust is not easy to penetrate and accumulate. With excellent dust release performance, pulse cleaning is thorough, and the pressure difference is always stable.
Q5：Frequent filter bag replacement in high-temperature dust removal projects leads to high labor and material costs?
EN Solution：Our P84 filter bag integrates high temperature resistance, hydrolysis resistance and corrosion resistance, with far longer service life than PPS and FMS. It effectively reduces shutdown replacement times and spare parts procurement frequency, cutting overall long-term operating costs.
Q6：Full PTFE filter bags are too expensive for high-humidity ultra-low emission projects, while PPS cannot meet performance requirements?
EN Solution：P84 perfectly fills the performance and price gap between PPS and full PTFE. It has better hydrolysis and fine dust capture performance than PPS, and has obvious cost advantages compared with full PTFE. It is the best high-cost-performance choice for high-humidity corrosive ultra-low emission working conditions.
