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| This high-performance medium and high-temperature filter material, made from Polyphenylene Sulfide fiber as the core material through needle-punching technology, is specially designed for sulfur-containing flue gas and weak acid and weak alkali working conditions. | |||||||||
Alternative Name and Product Introduction
Also called Polyphenylene Sulfide Filter Bags and High-Temp Chemical Resistant Filter Bags, these industrial filtration solutions are engineered for the most demanding high-temperature, corrosive environments. Constructed from 100% PPS needle felt, the bags combine exceptional thermal stability with superior chemical resistance, making them indispensable in industries where conventional filters fail prematurely.
Designed to operate continuously at 190°C (374°F) with short-term tolerance up to 200°C (392°F), these filter bags excel in acidic, alkaline, and moist high-temperature environments. Their unique molecular structure resists hydrolysis and oxidation, ensuring reliable performance in applications like coal-fired boilers and waste incineration.
Core Features
Temperature Resistance: Maintains integrity at continuous operating temperatures up to 190°C, outperforming polyester (135°C) and acrylic (140°C) alternatives.
Chemical Resistance: Resists strong acids (pH 2–4), alkalis (pH 10–12), and organic solvents, including sulfur dioxide and chlorine gas exposure.
Filtration Efficiency: Pleated configurations offer twice the filter area of standard bags, achieving >99.9% efficiency for 0.3–10μm particles.
Mechanical Durability: Tear strength of 250N/5cm and abrasion resistance suitable for high-velocity dust streams in power generation facilities.
Dew Point Tolerance: Performs reliably during dew point crossings, avoiding moisture-induced blinding common in other high-temp filters.
Long Service Life: 18–24 month average lifespan in coal-fired boilers, reducing maintenance frequency and downtime.
Low Energy Consumption: Pleated design reduces air-to-cloth ratio by 30%, lowering fan energy requirements compared to standard bags.
Typical Application Scenarios
PPS Filter Bags are critical in high-temperature industrial processes with chemical exposure:
Power Generation: Captures fly ash in coal-fired boilers, withstanding sulfuric acid condensation from flue gas desulfurization systems.
Waste Incineration: Filters acidic particulates from municipal solid waste (MSW) and hazardous waste incinerators operating at 160–190°C.
Cement Production: Controls kiln exhaust dust in clinker manufacturing, resisting alkaline dust and high temperatures.
Metal Smelting: Manages fumes from aluminum and copper smelting, withstanding corrosive metal oxides and high process temperatures.
Product Advantages (Compared with Competitors)
These PPS filter bags outperform competing high-temp materials:
Cost-Effectiveness: 30% lower total cost of ownership than PTFE filters over a 5-year lifespan, despite higher upfront cost.
Chemical Versatility: Handles both acidic and alkaline environments, eliminating the need for material switching in variable processes.
Operational Reliability: 95% fewer unplanned shutdowns compared to glass fiber bags in similar applications.
Regulatory Compliance: Meets EPA MACT standards for hazardous air pollutant (HAP) control in industrial emissions.
Customization Process
Our specialized customization ensures optimal performance in extreme conditions:
Process Analysis: Engineers evaluate flue gas composition, temperature cycles, and dust characteristics to recommend PPS thickness (800–1200g/m²).
Design Engineering: Customizes pleated or standard configurations, with diameters 150–300mm and lengths 2000–6000mm for specific baghouse models.
Membrane Options: Offers optional ePTFE membrane lamination for enhanced fine particle capture (<1μm) in sensitive applications.
Testing Protocol: Samples undergo 500 thermal cycles (20°C to 190°C) and chemical immersion testing to validate performance.
Production and Quality Control: Manufactured in ISO 9001 facilities with 100% pressure testing to ensure seam integrity at operating temperatures.
