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Advances in Fiber Technology for High-Performance FiltrationJeffrey S. Dugan and Edward C. Homonoff Fiber Innovation Technology, Inc.
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bag house filtration unitCoal power plant process diagram, featuring exhaust gas filtration
soot hot air H2O SOx NOx Hg Cl-, Br-, F-, I- bag filters clean airto stack soot hot air bag H2O filters SOx NOx Hg Cl-, Br-, F-, I-
Typical Baghouse Fabricneedlepunched nonwoven – 16 oz./yd2 tightly needled to control permeability optional scrim for dimensional stability optional expanded PTFE laminate to limit penetration
Typical Baghouse Fiberschemical resistance cost/lb Teflon® good resistance pH 1-14 $28-32 P84 ® poor acid resistance $13-15 Kermel ® poor acid resistance $12-14 Nomex ® poor acid resistance $10-12 Glass v. poor acid resistance low
Problems: cost availability filtration efficiency
Solution: PPS √ cost √ ? availability ? filtration efficiency(polyphenylene sulfide) √ cost √ ? availability ? filtration efficiency
S Polyphenylene sulfide
PPS Properties high tenacity low shrinkage flame resistancethermoplasticity
PPS Wet Heat Resistance160º C autoclave (6.5 kg/cm3) 100 PPS 80 % strength retention PET meta-aramid 60 24 48 72 96 120 144 days exposed
PPS Chemical Resistance48% Sulfuric Acid 100 PPS meta-aramid 80 % strength retention 60 15 30 45 60 75 90 days exposed
Shaped Cross Sections 4DG™
Bicomponent Fibers PPS sheath PET core
Bicomponent Fibers PPS PET
Bicomponent Fibers 3 denier 0.19 denier
Solution: PPS √ cost √ availability √ filtration efficiency √(polyphenylene sulfide) √ cost √ availability √ filtration efficiency √ healthy lungs
(yes, this is the last slide)Fiber Innovation Technology, Inc. (yes, this is the last slide)
Fiber Innovation Technology, Inc.
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