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Needle felt filter bag high temperature filter bag boiler dust bag dust filter bag

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Commodity name： Needle felt filter bag high temperature filter bag boiler dust bag dust filter bag

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Product description

Normal temperature dust filter bag

Material	Gram weight	Thickness	Working temperature	Instantaneous temperature	Acid resistance	Alkali resistance
Polyester needle felt	500-600G	1.8-2MM	130℃	150°C	General	General
Polyester (anti-static)	500-600G	1.8-2MM	130℃	150°C	General	General
Three-proof polyester needle felt	500-600G	1.8-2MM	130℃	150°C	General	General
Acrylic needle felt	500-600G	1.8-2MM	125℃	150°C	General	Excellent

Medium temperature dust removal filter bag

Material	Gram weight	Thickness	Working temperature	Instantaneous temperature	Acid resistance	Alkali resistance
Yellow medium temperature	680G	1.8-2MM	150℃	160℃	General	General
PPS needle felt	500-600G	1.8-2MM	160°C	190°C	Excellent	General
Aramid needle felt	500-600G	1.8-2MM	204℃	210℃	General	Wear resistance
Flomex needle felt	900-1000G	2MM	220℃	260℃	General	General

High temperature dust filter bag

Material	Gram weight	Thickness	Working temperature	Instantaneous temperature	Acid resistance	Alkali resistance
Glass fiber needle felt	900-1000G	2-2.2MM	260°C	280°C	General	-
PTFE needle felt	750-800G	1.8-2MM	260°C	280°C	Excellent	Excellent
P84 needle felt	500-600G	1.8-2MM	240℃	260℃	Excellent	Excellent
Basalt Needle Felt	900-1000G	2-2.2MM	280℃	300°C	General	-

Dust filter bags are typically made from a variety of materials, each chosen based on the specific requirements of the filtration process. One common material is polyester. Polyester - made filter bags are known for their durability and resistance to chemicals. They can withstand relatively high temperatures and are cost - effective, making them suitable for many general - purpose industrial applications. Another material is fiberglass. Fiberglass filter bags are highly resistant to heat, which makes them ideal for processes that involve high - temperature flue gases, such as in power plants or cement factories. The construction of a dust filter bag usually consists of a cylindrical shape with a sealed bottom and an open top. The fabric is carefully woven or felted to ensure a proper pore structure. The pores are small enough to trap dust particles while allowing air to pass through relatively easily.

The filtration process of a dust filter bag is based on several principles. As the dusty air enters the bag, the larger dust particles are initially trapped on the outer surface of the bag due to impaction. These particles collide with the fabric surface and are unable to follow the air stream around the fibers. As the air continues to flow through the bag, smaller particles are captured through a process called interception. The particles come into contact with the fibers as they try to follow the tortuous path of the air through the pores. Additionally, some very fine particles may be captured through diffusion. This occurs when the particles move randomly due to Brownian motion and eventually come into contact with the fibers.

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Needle felt filter bag high temperature filter bag boiler dust bag dust filter bag

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