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Conventional Dust Collector Filter Bags

By GSE

The Dust Collector Filter Bag is the most important component of an Industrial Bag House. These bags form the permeable filtration barrier that arrests the unwanted dust particles and allows the clean air to pass through it. These bags are suspended from the “tube sheet” or the “mounting plate” of the bag house which separates the dusty side from the clean side. These bags are made using different industrial textiles, which have to be carefully selected to suit the application. These industrial textiles are ‘nonwoven needlefelt’ material manufactured on a needle-loom. They provide an optimum permeability suited for low emissions, while working on depth filtration technology. The following aspects of the bag play a direct role in the overall emission efficiency of the bag house and life of the bag - Dimensional Accuracy of the Bag, Stitching Quality and Sewing Thread, Use of correct textile (media) for a particular application, Quality of the textile itself (surface finish/air permeability/tensile strength, etc). The VAYUFIL range of filter bags from GSE fulfils the above criteria and promises an effective solution to its customers.

Specifications

Media	Temperature	Acid Resistance	Alkali Resistance	Hydrolysis Resistance	Remarks	Applications
Polyester	Cont: 140° C Peak: 150° C	Good	Fair	Fair	Dry conditions upto 150° C. High Alkaline content is a problem	Cement, Iron & Steel, Pigments, Shot Blasting, Powder Coating, Asbestos, Wood, Plastics, Rock Crushing etc
Polypropylene	Cont: 90° C Peak: 100° C	Excellent	Excellent	Excellent	Moist Conditions upto 90° C. Hygroscopic dusts at low temperature with increased chemical attack	Detergents, Fodder, Milk Powder, Fertilizers, Sugar, Flour, Chemical Industry
Acrylic(Homopolymer)	Cont: 130° C Peak: 140° C	Good	Good	Excellent	Moist Conditions upto 130° C. Used an alternative to Polyester for better resistance to alkaline and hydrolysis	Aphalt Mixing, Gypsum, Spray Dryers, Cement, Lime, paint
Mixed Felt	Cont: 140° C Peak: 150° C	Good	Fair	Good	Blend of Polyester and Acrylic for cost effectiveness. Mixed Felt has some natural antistatic properties	Aphalt Mixing, Gypsum, Spray Dryers, Cement, Lime, paint
PPS Polyphenylsulphide(Ryton)	Cont: 180° C Peak: 190° C	Excellent	Excellent	Excellent	Applications with gas temperatures upto 180deg C with increased chemical attack	Coal Fired boilers, Chemical Industry, Gypsum
Aramid (Nomex)	Cont: 200° C Peak: 220° C	Fair	Good	Fair	Dry & Hot conditions, above dew point upto 200° C	Iron Smelters, Ashpalt Mixing Plants, Wood Fired Boilers, Ceramics, Lime
Polyimide P84	Cont: 250° C Peak: 260° C	Good	Fair	Fair	Dry & Hot Conditions, above dew point upto 250° C. The unique multilobar fibre structure provides for low emissions	Waste Incinerators, Cement Kilns, Chemical Industry, Coal Fired Boilers
Polytetrafluorethylene PTFE (Teflon)	Cont: 260° C Peak: 280° C	Excellent	Excellent	Excellent	Hot Conditions upto 260° C with increased chemical attack. Very strong material and withstands a high surge temperature	Coal & Oil Fired Boilers, Calciners, Incinerators, Smelters
Woven Glass Fibre	Cont: 260° C Peak: 290° C	Good	Fair	Fair	Hot conditions upto 260° C. Used as a cost-effective alternative to PTFE	Coal & Oil Fired Boilers, Cement Kilns, Incinerators, Ceramics etc.