Metal fiber filters for hot gas applications in the petrochemical industry Description: The legislation on particulate emission to the atmosphere is getting tighter year by year. Typical emission levels for high efficiency cyclones are close to 50 - 100 mg/Nm 3 . To meet the current and future limits, other technologies of separation are required. ElectroStatic Precipitators (ESP) fit the criteria. However, this technology is very complex and very expensive. Cleanable sintered metal fiber filters offer an economical solution. The development of metal fiber filter media such as Bekipor ® contributed to an increased quality level through higher filter efficiency and a longer on-stream life. The standard available alloys are AISI316 and Inconel ® 601 used for high temperatures (up to 360°C/650°F and 560°C/1040°F respectively), but other alloys are available. The fine filter pore size guarantees filter efficiencies of 99.99%, resulting in emission levels below 10mg/Nm 3 . Furthermore, this high-efficiency filter protects the turbo expander from erosion, reduces maintenance require- ments of the expander and protects the waste heat boiler from fouling. A highly porous structure, which is a characteristic of a sintered metal fiber media, offers high permeability and low pressure drop, even at high filtration velocities. This results in a low capital expenditure and low running costs. The Bekiflow ® HG filter system can also be used on the vent gas from catalyst storage hoppers and separation of catalyst fines during conveying operations. BEKIFLOW HG Bekipor ® and Bekiflow ® are registered trademarks of N.V. Bekaert S.A. Inconel ® is a registered trademark of Special Metals Corporation.
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Metal fiber filters for hot gas applications in
the petrochemical industry
Description:
The legislation on particulate emission to the atmosphere is getting tighteryear by year. Typical emission levels for high efficiency cyclones are close to50 - 100 mg/Nm3. To meet the current and future limits, other technologiesof separation are required.
ElectroStatic Precipitators (ESP) fit the criteria.However, this technology is very complex andvery expensive.
Cleanable sintered metal fiber filters offer an economical solution. The development of metalfiber filter media such as Bekipor® contributed toan increased quality level through higher filterefficiency and a longer on-stream life. The standard available alloys areAISI316 and Inconel® 601 used for high temperatures (up to 360°C/650°Fand 560°C/1040°F respectively), but other alloys are available.
The fine filter pore size guarantees filter efficiencies of 99.99%, resulting in emission levels below 10mg/Nm3. Furthermore, this high-efficiency filterprotects the turbo expander from erosion, reduces maintenance require-ments of the expander and protects the waste heat boiler from fouling.
A highly porous structure, which is a characteristic of a sintered metal fibermedia, offers high permeability and low pressure drop, even at high filtrationvelocities. This results in a low capital expenditure and low running costs.
The Bekiflow® HG filter system can also be used on the vent gas from catalyst storage hoppers and separation of catalyst fines during conveyingoperations.
BEKIFLOW HG
Bekipor® and Bekiflow® are registered trademarks of N.V. Bekaert S.A.Inconel® is a registered trademark of Special Metals Corporation.
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PSFIBERHGAPP Rev 0 0803 1.5M
For more information:Mott Corporation84 Spring LaneFarmington, CT 06032-3159
Tel: 860-747-6333 or 800-289-6688Fax: 860-747-6739E-mail: [email protected]
www.mottcorp.comISO 9001 CERTIFIED
mott corporationTh ink o f the poss ib i l i t i e s ™
DustLoadedGas
CleanGas
Cake build-up
Filtration Cycle
Back pulse
Cleaning Cycle
DustCake
PressurizedCleaningGas
Surface filtration: On line cleaned through back pulse
Technical and financial comparison
Specific features and benefits• No clogging• No Delta P fluctuations• Long on-stream life• Straight-forward technology
Filtermedia
Purpose• To meet emission standards• To protect downstream equipment• Particle filtration during
conveying operations
Cyclones Bekiflow® ESP
Emission(mg/Nm3)
Relativecosts
1
10
100
FCC-CCR-DEHYDROGENATIONconfiguration
STEAM CRACKERconfiguration
Filter vessel
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