P84 filter bag
P84 (polymide) dust collector filter media displays excellent stability under dry high heat temperatures, has great filtration properties, and performs well even under elevated levels of moisture content.
▶Fiber/Core Material:P84(Polyimide powder)
▶Pros:Excellent stability in applications with high dry heat temperatures, mineral acids, and alkaline.
▶Cons:Must oversize bag for shrinkage that can occur in temperatures above 450 Degrees F.
▶Applications:Waste-to-Energy,Coal Fired Boilers,Incinerators
P84 (polymide) dust collector filter media displays excellent stability under dry high heat temperatures, has great filtration properties, and performs well even under elevated levels of moisture content. These are some of the reasons P84 is one of the more expensive filter medias used in pulse jet baghouse dust collectors. Industries that use P84 filter media range from waste to energy, power, and cement.
P84 filter bag specifications
Artical Name | P84/M-Fiberglass Filter Felt |
P84 Filter Felt | |
Material | Fiber | P84/M-Fiberglass | P84 fiber |
Scrim | Glass fiber | PTFE | |
Weight | g/m³ | 850±20 | 550 |
Thickness | mm | 3.1±0.2 | 2.0±0.2 |
Air Permeability | m³/㎡.min.200pa | 20-35 | 14-18 |
Breaking Strength(N/5cm) | Warp | ≥2500 | ≥850 |
Weft | ≥2800 | ≥1000 | |
Elongation@50N(%) | Warp | ≤10 | ≤25 |
Weft | ≤10 | ≤50 | |
Service Temperature(℃) | Continuous℃ | ≤260 | ≤240 |
Instant℃ | 280 | 260 | |
Finishing | Heat setting PTFE Coating |
Singeing,Calendaring | |
Note:▶Max. operating temperature: 240℃/464℉; Ultimate temperature: 260℃/500℉ |
Post-processing methods & advantages
PTFE Membrane: Applying a PTFE membrane will allow you to lengthen the life of your bag since the membrane acts as the filter cake. It would allow for very little dust to stick to the bag itself. As the dust stays on the surface of the membrane and does not get entrained into the fibers of the bag, this allows your filter to last twice as long. Other benefits include reduced wear and tear, savings on maintenance costs, reduced energy costs, and more.
Singe: A pre-treatment process that is achieved by passing the filter material over an open flame, removing any straggly surface fibers. The result is a uniform surface area that improves cake release.
Glazed: A pre-treatment process achieved by a high pressure pressing of the fiber at elevated temperatures. The fibers are fused to the body of the filter medium that improves mechanical stability.
APPLICATION OF P84 DUST FILTER BAG
▶Boiler
▶Incinerators
▶Cement plants
▶Drying oven
▶Metallurgical plant
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