Product Overview
E‑glass needle felt is manufactured by needle‑punched composite of glass fiber and high‑temperature glass fiber. It features high temperature resistance, high mechanical strength, corrosion resistance, wear resistance and flex‑resistance. It can operate continuously at 240℃ and withstand peak temperature up to 300℃ for short‑term service. Widely used for high‑temperature flue‑gas filtration in steel, cement, power, non‑ferrous metal, waste incineration, asphalt concrete mixing and chemical industries. Compatible with pulse‑jet and high‑speed reverse‑air cleaning systems, it is one of the most widely adopted filter media for high‑temperature baghouses.
Working Principle
After dust-laden flue gas enters the dust collector box, solid dust particles are intercepted and attached to the outer surface of the filter bags. Clean gas penetrates the filter media and flows into the interior of the bags, then discharges steadily through the air outlet. Equipped with internal professional cages, the filter bags are effectively prevented from collapsing and deforming under negative pressure. Cooperating with the pulse dust cleaning system, dust cakes accumulated on the bag surface can be quickly removed to regenerate the filter bags, ensuring long-term stable operation with low and consistent pressure drop.
Core Product Advantages
1
Gradient Depth Filtration Structure: The filter media forms a 3D loose and porous fibrous structure with a loose-to-dense gradient from the inner layer to the outer layer, intercepting coarse and fine dust hierarchically. It delivers high dirt holding capacity and effectively avoids bag clogging.
2
Stable Operating Performance: Uniform filtration accuracy ensures low and stable system pressure drop. Excellent pulse cleaning performance greatly reduces equipment operation and maintenance frequency and costs.
3
Strong Working Condition Adaptability: A full range of filter materials including polyester, PPS, Nomex, P84 and PTFE are optional to adapt to normal-temperature, medium-temperature, high-temperature and acid-base corrosive flue gas environments.
4
Durable Exquisite Craftsmanship: Sewn with high-temperature resistant PTFE special sewing threads, the filter bag opening is tight with uniform and dense stitches, avoiding cracking and thread falling, perfectly adapting to high-frequency pulse cleaning working conditions.
5
Excellent Regeneration & Dust Cleaning Performance: The filter media features superior air permeability, enabling thorough dust cake peeling without hard clogging, which significantly extends the overall service life of the filter bags.
Common Filter Material Selection (Customizable)
1
PE Polyester Needle Felt: Universal normal-temperature material with excellent wear resistance and cost performance. Suitable for woodworking, sand and stone and conventional dust working conditions. Max continuous temperature: ≤135℃.
2
PPS Polyphenylene Sulfide: Features acid and alkali resistance and excellent hydrolysis resistance. Ideal for corrosive flue gas from coal-fired boilers and waste incineration plants. Max continuous temperature: ≤180℃.
3
Nomex Aramid: Medium and high-temperature wear-resistant material, widely used in asphalt mixing stations and drying kilns. Max continuous temperature: ≤200℃.
4
P84 Polyimide: High-end high-temperature filter material with special profiled fiber structure and strong fine dust capture capacity. Suitable for cement kiln tail and high-temperature metallurgical working conditions. Max continuous temperature: ≤240℃.
5
PTFE Polytetrafluoroethylene: Ultra-strong corrosion resistance, high temperature resistance and hydrolysis resistance, applicable for harsh working conditions with strong corrosion and high humidity flue gas. Max continuous temperature: ≤260℃.
Dust Filter Bag Parameter Table
Product Specifications & Processing Technology
Common Weight: 500g/㎡, 550g/㎡, 600g/㎡, 750g/㎡, 850g/㎡
Standard Sizes: Diameter 127mm / 133mm / 152mm / 160mm, customizable arbitrary length
Bag Top Types: Snap band, flange top, cuff top (compatible with mainstream imported and domestic dust collectors)
Optional Post-Treatments: Singeing & calendering, heat setting, water & oil repellent, PTFE membrane lamination, anti-static, acid & alkali resistant treatment
Application Scenarios
Compatible with pulse-jet dust collectors, chamber pulse dust collectors, off-line cleaning dust collectors and all kinds of baghouse dust removal equipment. Widely used for flue gas and dust treatment in cement, building materials, metallurgy, chemical industry, biomass power generation, waste incineration, asphalt mixing, mining and gravel industries.
Warm Reminder
This product is a special filter bag for gas-solid dust removal, exclusively used for air and flue gas dust filtration. It cannot replace liquid filter bags for water treatment, oil filtration and other fluid working conditions. All sizes, materials and processes can be customized according to customer equipment parameters and actual working conditions, supporting non-standard customization and bulk OEM orders.
