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Difference between revisions of "Fabric Filters"
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[[Category:Filtration]]{{Knoppen}} | [[Category:Filtration]]{{Knoppen}} | ||
[[File:Fabric_Filters_02.jpg|thumb|right|Fabric filter]] | [[File:Fabric_Filters_02.jpg|thumb|right|Fabric filter]] | ||
[[File:Fabric_Filters_01.jpg|thumb|right|Parts of Fabric filter]] | [[File:Fabric_Filters_01.jpg|thumb|right|Parts of Fabric filter]] | ||
Commonly known as baghouses, '''fabric filters''' use filtration to separate dust particulates from dusty gases. They are one of the most efficient and cost effective types of dust collectors available and can achieve a collection efficiency of more than 99% for very fine particulates. | Commonly known as [[baghouses]], '''fabric filters''' use filtration to separate dust particulates from dusty gases. They are one of the most efficient and cost effective types of dust collectors available and can achieve a collection efficiency of more than 99% for very fine particulates. | ||
Dust-laden gases enter the baghouse and pass through fabric bags that act as filters. The bags can be of woven or felted cotton, synthetic, or glass-fiber material in either a tube or envelope shape. | Dust-laden gases enter the baghouse and pass through fabric bags that act as filters. The bags can be of woven or felted cotton, synthetic, or glass-fiber material in either a tube or envelope shape. | ||
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==Types of Bag Cleaning== | ==Types of Bag Cleaning== | ||
Baghouses are characterized by their cleaning method. | Baghouses are characterized by their cleaning method. | ||
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===Shaking=== | ===Shaking=== | ||
A rod connects to the bag is powered by a motor that provides motion to remove the caked on particles. The speed and motion of the shaking depends on the design of the bag and composition of the particulate matter. Though, generally shaking is horizontal. The top of the bag is closed and the bottom is open. When shaken the dust collected on the inside of the bag is set free. During the cleaning process, no dirty gas flows through a bag while the bag is being cleaned. This redirection of air flow illustrates why baghouses must be compartmentalized. | A rod connects to the bag is powered by a motor that provides motion to remove the caked on particles. The speed and motion of the shaking depends on the design of the bag and composition of the particulate matter. Though, generally shaking is horizontal. The top of the bag is closed and the bottom is open. When shaken the dust collected on the inside of the bag is set free. During the cleaning process, no dirty gas flows through a bag while the bag is being cleaned. This redirection of air flow illustrates why baghouses must be compartmentalized. | ||
===Reverse Air=== | ===Reverse Air=== | ||
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==Fabric filters generally have the following parts== | ==Fabric filters generally have the following parts== | ||
# Clean plenum | |||
# Dusty plenum | |||
# Bag, cage, venturi assembly | |||
# Tubeplate | |||
# RAV/SCREW | |||
# Compressed air header | |||
# Blow pipe | |||
# Housing and hopper | |||