PPS + PTFE Composite Filter Bags
PPS + PTFE Composite Filter Bags are advanced high-performance filtration materials engineered by combining Polyphenylene Sulfide (PPS) fibers with Polytetrafluoroethylene (PTFE) fibers. This composite structure delivers exceptional chemical resistance, excellent filtration efficiency, outstanding abrasion resistance, and long service life under demanding industrial operating conditions.
These filter bags are widely used in coal-fired power plants, waste incineration facilities, steel manufacturing, cement production, chemical processing, and other industries requiring reliable high-temperature and corrosive gas filtration.
Key Benefits: Superior chemical resistance, excellent hydrolysis resistance, ultra-low emissions, outstanding abrasion resistance, and lower operating costs compared with pure PTFE filter bags.
Technical Specifications
| Item | Specification |
|---|---|
| Material Composition | PPS + PTFE Composite Fiber Structure |
| Continuous Operating Temperature | 200–240°C |
| Peak Temperature Resistance | 280–300°C |
| Chemical Resistance | Excellent (pH 0–14) |
| Hydrolysis Resistance | Excellent |
| Mechanical Strength | ≥1200 N/5cm |
| Abrasion Resistance | More than 3× Higher Than Fiberglass |
| PM2.5 Collection Efficiency | ≥99.9% |
| PTFE Membrane Efficiency | Up to 99.99% |
| Emission Concentration | <5 mg/m³ |
| Initial Pressure Drop | ≤800 Pa |
| Typical Structure | 50/50 PPS+PTFE or 80/20 PPS+PTFE |
| Expected Service Life | 3–5 Years |
Main Advantages
Excellent High-Temperature Resistance
Suitable for coal-fired power plants, waste incineration facilities, steel production lines, and other high-temperature filtration applications.
Outstanding Chemical Resistance
PTFE provides exceptional resistance to sulfur compounds, acidic gases, nitrogen oxides, and corrosive industrial chemicals.
Ultra-Low Emission Performance
PTFE membrane technology enables near-zero particulate emissions while maintaining stable operating pressure.
Excellent Wear Resistance
PPS improves abrasion resistance while PTFE scrim enhances flexibility and structural durability.
Long Service Life
Typical operating life ranges from 3–5 years under properly controlled industrial operating conditions.
Excellent Cost Performance
Provides comparable filtration performance to pure PTFE while reducing total investment by approximately 30%.
Limitations & Considerations
- Not recommended for high oxygen environments above 16% oxygen content at elevated temperatures
- More expensive than standard PPS, polyester, acrylic, and fiberglass filter media
- Overall durability depends heavily on PTFE scrim and manufacturing quality
- Pure PTFE remains the preferred solution for the most severe corrosive gas environments
- Potential micro-cracking may occur under extreme cryogenic conditions, although this is rarely encountered in industrial applications
Typical Industrial Applications
Coal-Fired Power Plants
Boiler dust collection and high-temperature flue gas filtration systems.
Waste Incineration Plants
Municipal and hazardous waste combustion systems requiring strict emission compliance.
Steel Industry
Blast furnace gas purification, sintering plants, and steelmaking exhaust filtration.
Chemical Industry
Corrosive gas filtration and chemical process exhaust treatment systems.
Cement Industry
Cement kiln exhaust systems, clinker coolers, and grinding mill dust collection.
Asphalt Mixing Plants
High-temperature exhaust gas filtration with moderate chemical corrosion.
PPS + PTFE Composite Filter Bags are one of the most balanced high-performance filtration solutions available today. They combine excellent corrosion resistance, abrasion resistance, filtration efficiency, and long service life while maintaining a significantly lower investment cost than pure PTFE filter bags, making them an ideal choice for power generation, waste incineration, steel production, and chemical processing industries.
