Aramid / Nomex Bag

Aramid/Nomex Bag is a premium high-temperature filter consumable specially engineered for high-humidity,hot-flue-gas industrial dust removal conditions.Made of high-quality meta-aramid(Nomex)needle-punched felt,this filter bag fills the performance gap between medium-temperature PPS bags and ultra-high-temperature fiberglass and PTFE bags.Featuring outstanding thermal stability,excellent hydrolysis resistance and mechanical toughness,it operates stably under continuous working temperatures of up to 220°C,with strong tolerance to humid,hot flue gas that easily causes hydrolysis and failure of ordinary filter materials.It is widely recognized as the most reliable solution for high-temperature and high-humidity dust removal scenarios such as industrial drying flue gas,kiln tail exhaust and boiler wet flue gas treatment.

Adopting professional aramid fiber needling and high-temperature setting technology,Nomex filter felt forms a uniform and dense three-dimensional filtration structure with stable pore distribution and excellent dust holding capacity.Following the outer-filtration principle,high-temperature dust-laden flue gas is intercepted on the outer surface of the bag,forming a stable dust cake,while clean air penetrates the fiber layer and enters the clean air chamber.During high-frequency pulse jet cleaning,the aramid fiber structure maintains excellent flexibility and mechanical fatigue resistance.It expands and vibrates evenly to completely peel off dust cake without fiber deformation or fatigue damage.Reinforced snap band bag mouth,high-temperature resistant sewing thread and thickened bag bottom enhance overall structural tightness,effectively preventing air leakage,bag falling and seam cracking under long-term high-temperature alternating load.

Aramid/Nomex filter bags support multiple optimized surface treatments to adapt to complex industrial working conditions.Conventional singeing and calendering processes smooth the fabric surface to prevent fine dust embedding and reduce system operating resistance.Professional waterproof,oil-proof and anti-condensation treatments effectively solve bag blinding and dust caking caused by high-humidity hot flue gas.Anti-static finishing is optional for dry,flammable powder dust environments to eliminate static risks.All products are strictly sized and calibrated to perfectly match standard filter cages and dust collector tube sheets,ensuring tight overall system sealing and stable long-term operation of baghouse equipment.

Compared with other mainstream filter materials,Nomex aramid bags have unique irreplaceable advantages in high-temperature and high-humidity scenarios.Different from PPS bags that are prone to oxidative hydrolysis and rapid aging in high-temperature humid flue gas,aramid fibers feature excellent hydrolysis resistance and thermal oxidation stability,greatly extending service life in wet hot working conditions.Compared with brittle fiberglass bags,Nomex material has superior toughness,friction resistance and pulse cleaning fatigue resistance,adapting to long-term high-frequency ash cleaning cycles.Although lower in temperature resistance than pure PTFE bags,it offers significantly better cost-effectiveness,making it the most balanced and cost-efficient choice for 160°C–220°C high-humidity flue gas environments.

Standard operating specifications ensure long-term stable performance of Nomex filter bags.The continuous working temperature ranges from 160°C to 220°C,with instantaneous temperature resistance up to 240°C.It excels in high-temperature and high-humidity flue gas,low-sulfur exhaust and drying process dust conditions.It is not recommended for strong acid,strong alkali and high-corrosive flue gas environments,which will cause gradual fiber degradation.During operation,avoid long-term over-temperature impact and excessive dew-point condensation.Regular inspection of fabric surface,sewing seams and sealing performance can effectively prevent local damage and ensure continuous and efficient dust removal efficiency.

Aramid/Nomex Bags are widely applied in cement kiln tail dust removal,industrial drying equipment flue gas treatment,thermal power plant humid flue gas purification,metallurgical process dust control,asphalt mixing plant dust removal and medium-high temperature industrial waste gas treatment projects.As a mature high-temperature and hydrolysis-resistant filtration solution,it balances thermal stability,mechanical durability and economic benefits,providing reliable long-term operation guarantee for high-humidity and high-temperature industrial baghouse dust removal systems.