PPS + PTFE Composite Filter Bags
PPS + PTFE Composite Filter Bags are high-performance industrial filtration materials that combine the excellent chemical resistance of PTFE with the cost-effective durability and abrasion resistance of PPS. This composite structure is widely used in high-temperature and corrosive flue gas filtration applications.
The combination of PPS and PTFE provides outstanding resistance to acidic gases, hydrolysis, high dust loading, and demanding industrial operating conditions while offering a lower investment cost than pure PTFE filter bags.
Key Benefits: Excellent chemical resistance, high filtration efficiency, superior abrasion resistance, long service life, and a cost-effective alternative to pure PTFE filter bags.
Product Properties
| Item | Specification |
|---|---|
| Material Composition | PPS + PTFE Composite Structure |
| Continuous Operating Temperature | 200°C–240°C |
| Peak Temperature Resistance | 280°C–300°C |
| Chemical Resistance | Excellent (pH 0–14) |
| Hydrolysis Resistance | Excellent |
| Mechanical Strength | ≥1200 N/5cm |
| Abrasion Resistance | Excellent |
| Filtration Efficiency | PM2.5 ≥99.9% |
| Membrane Efficiency | Up to 99.99% |
| Initial Pressure Drop | ≤800 Pa |
| Typical Structure | 50% PPS + 50% PTFE or 80% PPS + 20% PTFE |
| Expected Service Life | 3–5 Years |
Main Advantages
Excellent High-Temperature Resistance
Suitable for coal-fired power plants, waste incineration systems, steelmaking facilities, and other high-temperature applications.
Outstanding Chemical Resistance
Provides excellent resistance to acidic gases, sulfur compounds, nitrogen oxides, and corrosive chemical environments.
High Filtration Efficiency
PTFE membrane treatment enables ultra-low emissions and extends pulse cleaning intervals by 30–50%.
Excellent Wear Resistance
PPS improves abrasion resistance while PTFE scrim enhances flexibility and structural stability.
Long Service Life
Typical service life ranges from 3–5 years under properly controlled operating conditions.
Excellent Cost Performance
Can reduce overall cost by approximately 30% compared with pure PTFE filter bags while maintaining excellent filtration performance.
Limitations & Considerations
- Not recommended for high oxygen environments exceeding 16% oxygen content above 200°C
- Higher cost than standard PPS, fiberglass, and polyester filter bags
- Overall performance depends heavily on PTFE scrim quality
- Potential material stress under extremely low-temperature conditions
- Pure PTFE filter bags remain the preferred solution for the most severe chemical environments
Typical Industrial Applications
Coal-Fired Power Plants
Boiler dust collection and high-temperature flue gas filtration systems.
Waste Incineration Plants
Suitable for systems requiring compliance with stringent emission regulations.
Steel Industry
Blast furnace gas purification, sintering plants, and dust collection systems.
Chemical Industry
Corrosive gas filtration and chemical process exhaust treatment.
Cement Industry
Kiln exhaust systems, clinker coolers, and grinding mill dust collection.
Asphalt Mixing Plants
High-temperature and corrosive exhaust gas treatment systems.
PPS + PTFE Composite Filter Bags are an excellent choice for industrial applications requiring both high-temperature resistance and strong chemical corrosion resistance. They provide a balanced solution between performance and cost, making them one of the most widely selected filter media for power generation, waste incineration, steel production, and chemical processing industries.
