Pulse-Jet Filter Bags

As always, we focus on ensuring the maximum performance of your filter system.

• Our application technology allows for individual consideration of the customer's filtration process.

• Required emission values

• Required service life

• A selection of the best filter medium and filter bags

Filter bag designs at glance:

• Sturdy filter bag head: featuring snap ring, cord, ring or cut edge head design: separate or integrated top, head mounting piece with reinforcements and grounding wire

• Hose designed for improved stability, with stiffening rings for cageless constructions

• High quality seam designed for lowest emissions: Sewn, welded, with additional PTFE seam seal

• Floor construction for mechanical robustness and extended service life: With reinforced floor covering, double-layered bottom

Design Options & Filter Media for All Industries

We offer numerous filter media such as Polypropylene, Acrylic, Polyester, Aramid, PPS, P84, Fiberglass and many other options and finishes such as high efficiency ePTFE membrane to meet the needs of every industry.

Types of Dust Collector Filter Bags

The type of filter bag you’ll need to operate your dust collector at maximum effectiveness and efficiency will depend on the type of machine you have and the specific operating conditions. See below for more information on what filter bag is best for your application.

Polyester

Normal maximum continuous operating temperature is 275°F. Polyester felts offer very good resistance to chemicals, abrasion, and dry heat degradation. They offer excellent dimensional stability and are the most common type of filter bag used today. Polyester are good for dry heat applications and are superior to other synthetics with the exception of Nomex® (Aramid) and Teflon® in this regard. Polyester is not a good choice for moist heat and subject to hydrolytic degradation under certain circumstances. Polyester offers good resistance to most mineral and organic acids except high concentration of nitric, sulfuric, and carbolic acids. It has good resistance to weak alkali  and moderate resistance to strong alkali at low temperature. Polyester also has good resistance to most oxidizing agents and excellent to most organic solvents. It is not recommended for some phenolic compounds. Not recommend for high concentration of strong alkali at high temperatures.

Polypropylene

Normal maximum continuous operating temperature is 170°F. Polypropylene felt is used for general applications where chemical and moisture attacks other fibers. Polypropylene offer high strength, excellent resistance to most acids and alkali. Smoothness of fibers allow good cake release and resistance to blinding. Moisture absorption is virtually non-existent. This fabric media has very good resistance to both mineral and organic acids and generally good resistance to alkali with the exception of sodium and potassium hydroxide above 200°F. Good resistance to most reducing agents. Polypropylene also has fair resistance to most organic solvents with the exception of ketones, esters, and chlorinated hydrocarbons.

Acrylic (Homopolymer Acrylic Felt)

Normal maximum continuous operating temperature is 275°F. General applications include: Dryers, Electric furnace, Aluminum reduction and Primary or secondary smelting. The chemical resistance is satisfactory to most mineral and organic acids. Superior to polyamide and polyesters in this regards. Acrylic resistance to alkali is inferior to most fibers except natural protein fibers such as silk and wool. Acrylic has fair resistance to most oxidizing agents and is superior to polyamide  and protein fibers in this respect. It has excellent resistance to most common organic solvents. Overall Acrylic has good acid resistance, high resistance to hydrolysis. Not available in all fabric forms and is more costly than polyester or polypropylene. Good temperature resistance.

 

High Temperature Filter Media Choices

Aramid (Nomex®)

Normal maximum continuous operating temperature is 375°F. General applications for Aramid felt include: Highly abrasive dust applications, Electric arc furnaces, High temperature dryers, Cupolas, and chemical applications where high temperatures exist. Aramid offers a good resistance to alkalies under most condition. Most mineral oxides cause degradation and partial decomposition. Aramid withstands common organic solvents very well. Some phenolic compounds cause solubility.

Fiberglass

Normal continuous operating temperature is 500°F. General applications include: Cement kilns, High temperature dryers, Carbon black reactors, Power plants, and Electric furnaces. Fiberglass has excellent resistance to most acids, but is attacked by hydrofluoric acid. Not recommended where bases and salts such as chlorides, bromides, and cyanides are present. This media has poor flex abrasion qualities and requires a 20 vertical wire minimum support cage when used in tubular bag form.

P84® (Polyimide)

Normal maximum continuous operating temperature is 500°F. Common applications for this felt include: smelters, dryers, coal-fired boilers, incinerators, kilns, and calciners. P-84 is nonflammable and not hydroscopic. This felt offers extended bag life in low pH applications and helps reduce differential pressure across the baghouse. The felt operates well in high temperature applications, against acid attacks and is resistant to flex abrasion. Alkaline should be avoided at high temperatures when using this media.

PPS (Polyphenylene Sulfide)

(Commonly known brands: Ryton® or Procon®) Normal maximum continuous operating temperature is 375°F. Common applications include: Coal-fired boilers, Incinerators, Fluidized bed systems, cement mills, oil and gas firings, asphalt plants and Pulverized coal injection systems. Ryton® has excellent resistance to both acids and alkalis. The media also has the ability to operate effectively on applications with O₂ content up to 9%. Ryton® works well in high moisture content applications and where dew point crossings are common. This media is suited for applications where emissions standards are tight.

Teflon® (PTFE fiber)

Normal maximum continuous operating temperature is 500°F. Generally used for severe chemical environments at high temperatures. Common applications include coal-fired power plants, cement production, and steel foundries. Chemical resistance is excellent and abrasion resistance is generally superior to protein fibers, but not as good as most synthetics. Teflon® has an extreme high cost and is typically used after everything else has failed. Teflon® is available in both a woven and a felt finished product. This media has poor flex abrasion qualities and requires a 20 vertical wire minimum support cage when used in tubular bag form.

Basalt (Basalt fiber) Dust Filter Bag

Basalt fiber &P84 needle punched felt

Weight:900gsm, 950gsm, 1000gsm

 

Finish Treatment:

Singed, calendered, heat set, Teflon treatment 

 

Size: 

diameter 100mm, 125mm, 130mm, 150mm, 180mm, 250mm ect. 

Any length is available. Special size is customizable.

 

Process Method: sewing 

 

Advantages:

a) stable size, good strength 

b) lower price than other high temperature resistance chemical fiber 

c ) High temperature resistance 

 

Required information:

Since every filter has its own characteristics and parameters, when we chose filter material for dust collector filter bags, we have to know the following parameters: temperature, humid, dust diameter, gas chemical properties, dust abrasive, filter's mechanical parameters. 

Generally, Our dust collector filter bags are widely used in industrial waste gas filtration, useful dust, high temperature gas filters.

Our filter bag factory provides you good solution according to dust characteristics, help you chose good filter material to achieve best filtering effective.

Application:

Widely used in the field of steel and iron, on-ferrous melting,chemical, building material, electric power etc.

Basalt high temperature resistant filtration material
Construction	Needle felt
material	Basalt
Srim support	Yes
Felt Area Weight	900g/sqm +/-5%
Thickness	2.6-2.8 mm
Mean Air Permeability	10-15 m3/m2/min@12.7mmH2O
Breaking Strength-MD	1800N/5cm
Breaking Strength-CMD	1800N/5cm
Breaking Elongation(N/5cm)-MD	8%
Breaking Elongation(N/5cm)-CMD	<8%
Dry Shrinkage MD（260℃）	＜1%
Dry Shrinkage CMD（260℃）	＜1%
Operating Temperatures	≤300 Degree deg C
Recommended Maximum Continuous	300 Degreedeg C
Recommended Maximum Surge	350 deg C
Finish	calendaring, Teflon treatment, heat setting