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How to choose filter media type?

2011-12-01 14:16:35

how can you choose the right filter media for you filter bag?Choosing the correct filter media for your dust collector bag filter is an extremely important and sometimes difficult process. U.S. Bag filter media is chosen based upon the type of application that they will be used for. When selecting a media, the following things must be taken into consideration. Keep in mind that bag filter performance is directly related to how well it can tolerate the environment in which it is being used, how efficiently it is able to remove dust particles from it's fabric, and it's ability to be cleaned by the dust collector. As a starting point, it is helpful to identify the type of filter media currently used in the application.

Dust Collector Filter Fabrics technical data

Bag Filters - Fabric Selection
	Polyprop.	Polyester	Acrylic	Fiber-glass	Nomex	Ryton	P 84	Teflon	Ceramic
Temperature	170 F	275 F	285 F	500 F	375 F	375 F	500 F	500 F	1600 F
Abrasion	Great	Great	Good	Fair	Great	Good	Fair	Good	Fair
Energy Absorption	Good	Great	Good	Fair	Good	Good	Good	Good	Fair
Filtration Properties	Good	Great	Good	Fair	Great	Great	Great	Fair	Fair
Moist Heat	Great	Poor	Great	Great	Good	Good	Good	Great	Great
Alkalines	Great	Fair	Fair	Fair	Good	Great	Fair	Great	Fair
Mineral Acids	Great	Fair	Good	Good	Fair	Great	Good	Great	Poor
Oxygen (10%+)	Great	Great	Great	Great	Great	Poor	Great	Great	Great

Polyester Felt Recommended continuous operation temperature: 275F Maximum (short time) operation temperature: 300F Supports combustion: Yes Biological resistance (bacteria, mildew): No Effect Resistance to alkalis:Fair Resistance to mineral acids: Fair+ Resistance to organic acids: Fair Resistance to oxidizing agents: Good Resistance to organic solvents: Good Available weights: 10 oz. - 22 oz.	Polypropylene Felt Recommended continuous operation temperature: 190F Maximum (short time) operation temperature: 210F Supports combustion: Yes Biological resistance (bacteria, mildew): Excellent Resistance to alkalis: Excellent Resistance to mineral acids: Excellent Resistance to organic acids: Excellent Resistance to oxidizing agents: Good Resistance to organic solvents: Excellent Available weights: 12 oz. - 18 oz
Combo Felt Recommended continuous operation temperature: 210F Maximum (short time) operation temperature: 225F Supports combustion: Yes Biological resistance (bacteria, mildew): Good Resistance to alkalis: Good Resistance to mineral acids: Good Resistance to organic acids: Good Resistance to oxidizing agents: Good Resistance to organic solvents: Good Available weights: 12 oz. - 18 oz. Dust Collector Filter High Temperature Materials	Conex / Nomex Felt (Aramid) Recommended continuous operation temperature: 400F Maximum (short time) operation temperature: 425F Supports combustion: No Biological resistance (bacteria, mildew): No Effect Resistance to alkalis: Good Resistance to mineral acids: Fair Resistance to organic acids: Fair+ Resistance to oxidizing agents: Poor Resistance to organic solvents: Good Available weights: 10 oz. - 22 oz.
P84 Felt Polyimide Recommended continuous operation temperature: 475F Maximum (short time) operation temperature: 500F Supports combustion: No Biological resistance (bacteria, mildew): No Effect Resistance to alkalis: Fair Resistance to mineral acids: Good+ Resistance to organic acids: Good+ Resistance to oxidizing agents: Good+ Resistance to organic solvents: Excellent Available weights: 14 oz. - 18 oz.	Ryton Felt / PPS Recommended continuous operation temperature: 375F Maximum (short time) operation temperature: 400F Supports combustion: No Biological resistance (bacteria, mildew): No Effect Resistance to alkalis: Excellent Resistance to mineral acids: Excellent Resistance to organic acids: Excellent Resistance to oxidizing agents: Fair Resistance to organic solvents: Excellent Available weights: 16 oz. - 18 oz. Dust Collector Filter Specialty Materials
Homopolymer Acrylic Felt Recommended continuous operation temperature: 250F Maximum (short time) operation temperature: 275F Supports combustion: Yes Biological resistance (bacteria, mildew): Good+ Resistance to alkalis: Fair Resistance to mineral acids: Good+ Resistance to organic acids: Excellent Resistance to oxidizing agents: Good Resistance to organic solvents: Good+ Available weights: 15 oz. - 18 oz.	Epitropic Felt Antistatic Recommended continuous operation temperature: 275F Maximum (short time) operation temperature: 300F Supports combustion: Yes Biological resistance (bacteria, mildew): No Effect Resistance to alkalis: Fair Resistance to mineral acids: Fair+ Resistance to organic acids: Fair Resistance to oxidizing agents: Good Resistance to organic solvents: Good Available weights: 14 oz. - 16 oz.