High Temperature Filter Bags
Is your application operating at a high temperature over 275 degrees Fahrenheit? If so, there are many dust collector
filter bag options to choose from. Outlined below is your guide to high temperature dust collector filter bags. We've broken down characteristics and properties of the top five most common filter media options.
Aramid
Aramid filter media, otherwise known by the brand name Nomex©, can handle up to a maximum continuous operating temperature of 400 degrees Fahrenheit. The main advantage of Aramid is how well Aramid can withstand high heat. In fact, Aramid media is commonly used in household oven mittens. Aramid is not ideal for applications looking for acid resistance.
Aramid filter media is commonly used in asphalt plants and rock plants where there is high heat but are no chemical issues. You can typically distinguish an Aramid filter bag by its color. It is usually yellow and can have brown speckles which is caused by singeing.
| Characteristics |
Rating |
| Relative Cost |
$$$ |
| Max Continuous Operating Temperature |
400 Degrees F. |
| Abrasion |
Good |
| Energy Absorpsion |
Good |
| Filtration Properties |
Excellent |
| Moist Heat |
Good |
| Alkaline |
Good |
| Mineral Acids |
Fair |
| Oxygen (15%+) |
Excellent |
| Pros |
Cons |
| Provides great resistance to highly abrasive dust applications. |
Mineral oxides can cause deterioration or partial decomposition over time. |
| Applications |
| Cement |
| Cupolas |
| High Temp Dryers |
Fiberglass
Fiberglass
filter media has been the leading industry standard for dust collection applications where high temperatures above 500 degrees Fahrenheit are present.
Fiberglass filter media is composed of a dense structure of fine fiberglass filaments. You’ll see Fiberglass used in industries such as energy,
chemicals, and minerals.
It is cost efficient when compared to similar high heat filter medias and is the most common choice for situations where heat is above 400 degrees Fahrenheit. Fiberglass can have a lot of variation in color, and depending on the application, can have different types of treatment (i.e. silicon, carbon).
| Characteristic |
Rating |
| Relative Cost |
$$$$ |
| Max Continuous Operating Temperature |
500 Degrees F. |
| Abrasion |
Fair |
| Energy Absorption |
Fair |
| Filtration Properties |
Fair |
| Moist Heat |
Excellent |
| Alkaline |
Fair |
| Mineral Acids |
Poor |
| Oxygen (15%+) |
Excellent |
| Pros |
Cons |
| Performs excellent in high temperature applications up to 500 Degrees Fahrenheit. |
Sensitive bag to cage fit. Has poor flex abrasion qualities and would require a cage with 20 vertical wires for minimum support. |
| Applications |
| Power Plants |
| Cement Kilns |
| Carbon Black Reactors |
PPS
PPS, also otherwise known by the proprietary name Ryton© or Procon© is commonly used in dust collection applications that require excellent resistance to acids and alkaline. Out of all the options for high temperature filter medias, PPS has the lowest tolerance to heat in comparison with others but handles chemicals better. PPS can be used in applications with maximum continuous operating temperatures of 375 degrees Fahrenheit. PPS filter bag media is commonly used in carbon black,
chemicals,
cement, asphalt, coal fired boilers, and incinerator applications.
| Characteristic |
Rating |
| Relative Cost |
$$$$$ |
| Max Continuous Operating Temperature |
375 Degrees F. |
| Abrasion |
Good |
| Energy Absorption |
Good |
| Filtration Properties |
Good |
| Moist Heat |
Good |
| Alkaline |
Excellent |
| Mineral Acids |
Excellent |
| Oxygen (15%+) |
Poor |
| Pros |
Cons |
| Excellent resistance to acids and alkaline |
Sensitive bag to cage fit. |
| Applications |
| Asphalt Plants |
| Cement Mills |
| Incinerators |
P84
P84 (polymide)
dust collector filter media is used in operating conditions of a maximum 500 degrees Fahrenheit. P84 performs well under dry high heat temperatures and can even withstand some elevated levels of moisture. P84 has a slightly better resistance to acids than PPS. This is a proprietary fabric that is imported from Germany to all manufacturers. For these reasons, P84 is one of the more expensive filter medias used in pulse jet baghouse dust collectors. P84 filter can be seen in used in waste to energy, power, lime kilns, smelting, glass and ceramic, and cement applications.
| Characteristic |
Rating |
| Relative Cost |
$$$$$$ |
| Max Continuous Operating Temperature |
500 Degrees F. |
| Abrasion |
Fair |
| Energy Absorption |
Good |
| Filtration Properties |
Excellent |
| Moist Heat |
Good |
| Alkaline |
Fair |
| Mineral Acids |
Good |
| Oxygen (15%+) |
Excellent |
| Pros |
Cons |
| Excellent stability in applications with high dry heat temperatures, mineral acids, and alkaline. |
Must oversize bag for shrinkage that can occur in temperatures above 450 Degrees F. |
| Applications |
| Waste-to-Energy |
| Coal Fired Boilers |
| Incinerators |
PTFE
PTFE, otherwise known as Teflon, is one of the most expensive
dust collector filter medias used in pulse jet
baghouse dust collectors. PTFE is considered a premium filter media because it can deliver superior dust cake release, withstand high heat temperatures of up to 500 degrees Fahrenheit, resist acids and moist heat. Cement, steel foundries, coal fired power plants, carbon black, steel and energy applications are just a few example of industries that use PTFE. PTFE is alfso known by its proprietary names Gore-Tex© and Tetratex©.
| Characteristic |
Rating |
| Relative Cost |
$$$$$$$ |
| Max Continuous Operating Temperature |
500 Degrees F. |
| Abrasion |
Good |
| Energy Absorption |
Good |
| Filtration Properties |
Fair |
| Moist Heat |
Excellent |
| Alkaline |
Excellent |
| Mineral Acids |
Excellent |
| Oxygen (15%+) |
Excellent |
| Pros |
Cons |
| Teflon delivers superior dust cake release and high filtration efficiency in high heat applications that demand high resistance to acids and moist heat. |
Must oversize bag for shrinkage that can occur in temperatures above 450 Degrees F. |
| Applications |
| Steel Foundries |
| Coal Fired Power Plants |
| Carbon Black Plants |
Do you need more information after reading this guide to high temperature dust collector filter bags? If you need help, one of our account managers can help find the right fit for you. Contact us at 888-221-0312, email info@usairfiltraton.com or request a consultation here.
Dust Collector Filter Bag Resources
In search of additional dust collection resources to help you? Get a free download of our How to Select the Right Filter Bag eBook below. It’s a full guide organized into key topics such as
dust properties,
filter bag finishes,
air to cloth ratio,
filter bag construction, and more.
