PPS Needle-Punched Felt

PPS Needle-Punched Felt Overview

PPS Needle-Punched Felt is a high-performance filtration media engineered for high-temperature, chemically aggressive, and moisture-rich flue-gas environments. It is ideal for continuous operation up to 190 °C and provides excellent resistance to acidic gases, alkali, hydrolysis, and fine dust particulates.

Best suited for:

  • Coal-fired boilers
  • Cement kilns and clinker coolers
  • Waste-to-Energy (WtE) plants
  • Biomass combustion systems
  • Chemical and petrochemical plants
  • Metallurgical and smelting operations

Key selection criteria:

  • Process temperature curve (continuous vs peak)
  • SO₂ / SO₃ concentration and acid dew-point considerations
  • Moisture load and condensation risk
  • Dust abrasiveness and particle characteristics
  • Required air-to-cloth ratio
  • Expected bag life and maintenance intervals

Omela Advantage:

  • Lower and more stable differential pressure
  • Longer filter-bag service life
  • Reliable emissions control under variable operating conditions

Key Performance Benefits of PPS Needle-Punched Felt

01
Excellent Hydrolysis & Moisture Resistance

Ensures long-term durability even in humid flue-gas environments or applications where condensation may occur.

02
Strong Chemical Resistance (Acids, Solvents, Oxidants)

Ideal for industrial exhaust streams containing acidic, alkaline, or corrosive components.

03
Stable Dust-Holding Capacity & Permeability

The engineered non-woven structure maintains consistent filtration efficiency and extends filter-bag life under heavy dust loading.

04
Compatible with Advanced Surface Treatments & Membranes

Can be upgraded with PTFE dipping or membrane lamination for ultra-low emissions, oil/water repellency, or anti-static performance.

05
Suitable for Mid-Temperature Industrial Applications

Typical continuous working temperature up to ~130 °C, with short-term thermal tolerance up to ~140 °C.

06
Flexible Supply Options: Rolls or Finished Filter Bags

Available as roll goods for further fabrication or as fully finished filter bags tailored to customer requirements.

Polypropylene Needle-Punched Felt Specifications

Technical Properties of PPS Needle-Punched Felt
Air Permeability (L/m²·s) 200–300
Tensile Strength (N/5 cm) Warp ≥1100
Weft ≥1500
Tensile Elongation (%) Warp ≤15
Weft ≤20
Heat Shrinkage (%) Warp ≤1.5
Weft ≤1.0
Temperature (°C/°F) Continuous: 190 / 374
Instant: 220 / 428
Anti-acid Good
Anti-alkali Excellent
Anti-abrasion Excellent
Hydrolysis Stability Middle

INDUSTRIAL
APPLICATIONS

PPS Needle-Punched Felt is a high-performance, chemically resistant filter media designed for hot, corrosive flue-gas environments. It offers stable permeability, low pressure drop, and long service life in demanding dust collection systems, making it ideal for power generation, cement production, waste-to-energy, and metallurgical processes.

Coal & Biomass-Fired Boilers

Coal & Biomass-Fired Boilers

PPS felt is widely used in boiler baghouses handling high-sulfur, high-moisture flue gas. Typical applications include coal-fired power plants, circulating fluidized bed (CFB) boilers, and biomass combustion systems where acid dew point and corrosion risk are critical.

Cement, Lime & Mineral Processing

Cement, Lime & Mineral Processing

In cement kilns, clinker coolers, lime and mineral processing lines, PPS Needle-Punched Felt maintains dimensional stability and filtration efficiency under high dust loading, temperature fluctuations, and chemically aggressive exhaust gas streams.

Waste-to-Energy & Incineration

Waste-to-Energy & Incineration

Thanks to its excellent resistance to acid gases and condensate, PPS felt is an ideal choice for waste-to-energy plants, municipal solid-waste incineration, and hazardous-waste furnaces, where flue-gas chemistry and moisture levels vary widely.

Engineering Support & Customization

Engineering card image

Pre-Project Technical Evaluation

Before selecting PPS felt, Omela performs a detailed assessment of:

  • Operating temperature window (continuous and peak)
  • Moisture level, acid dew point, and condensation risk
  • Chemical composition of the gas stream (SO₂/SO₃, acids, alkalis)
  • Dust loading, particle size, and abrasiveness
  • Required filtration efficiency and air-to-cloth ratio
  • Compatibility with existing filter housings and bag cages
Engineering card image

Custom Engineering Solutions

Omela offers tailored PPS Needle-Punched Felt configurations, including:

  • Selection of felt weight, thickness, and permeability
  • Optional scrim reinforcement for higher mechanical strength
  • Custom surface treatments (singed, calendared, PTFE coating or membrane lamination)
  • Optimization for dust collection, flue-gas filtration, or mixed-phase applications
  • Custom bag designs: top/bottom configurations, sewing vs. welded seams, and cage fit
  • Engineering support to match PPS felt with existing or new filtration systems
Engineering card image

Quality Assurance & Testing

Each batch of PPS Needle-Punched Felt undergoes strict quality control, including:

  • Air permeability and pressure-drop verification
  • Tensile strength, elongation, and Mullen burst testing
  • Heat-shrinkage and dimensional stability tests at operating temperature
  • Chemical compatibility checks in acidic and alkaline environments
  • Visual inspection for surface uniformity, defects, and coating integrity
LET’S WORK TOGETHER

Why Choose Omela Filtration?

Choosing the right filtration supplier affects everything from system stability to maintenance downtime. At Omela Filtration, we combine reliable materials, controlled production, and years of industry experience to support dust and liquid filtration needs across different plants and applications.

We use consistent-grade filter media, sewing thread and metals sourced from qualified suppliers. Each batch is checked for weight, thickness, air permeability and tensile strength to keep performance steady across shipments.

Our facility is equipped with modern sewing lines, hot-welding machines and automated inspection tools. This keeps production efficient and helps us meet tight delivery schedules, even on custom orders.

Our engineers and technicians have long experience with dust collectors, liquid systems and industry-specific conditions. They help you match materials to temperature, chemistry and air-to-cloth ratios to avoid unnecessary failures.

From sampling to documentation and shipping, our team responds quickly and keeps information clear. Customers in cement, asphalt, power and water-treatment plants rely on our service to resolve problems without delay.

From the first technical discussion to installation and long-term maintenance, our team stays involved at every stage. We analyze your operating conditions, adjust product designs when needed, and ensure the final filtration setup works reliably in real plant environments. After delivery, our service team continues to provide guidance and troubleshooting support, helping you keep your system stable and downtime low.


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Frequest Asked Questions

1. What operating temperature is recommended for PPS Needle-Punched Felt?
2. Is PPS suitable for high-moisture or acidic flue-gas environments?
3. What factors should be evaluated before choosing PPS felt for a filtration system?
4. Can PPS Needle-Punched Felt be customized for specific applications?
5. What surface treatments are available for PPS felt?
6. What industries typically use PPS Needle-Punched Felt?
5/5 - (3 votes)

Trusted by Industries
Worldwide

With 20+ years of experience and 1000+ global clients, we deliver stable filtration performance and dependable dust-collector operation.