Dust Filter Bag - Types of dust filter bag

Now a day’s dust filter bag is required mainly by all the manufacturing plants. Dust filter bag is employed to purify pollutants from the factory atmosphere. Dust filter bag is also available in fabric with special surface coating and finishes.

                1- Plain – It is natural finish. It is a typical purpose matter

                2-Singed-It is finished by exposing media to open flame to burn off any loose fibers. Dust            filer bag improves dust layer formation.

3-Glazed- It is accomplished by running media over the hot roller which melts fibers and results                in a smooth eggshell finish. Dust filter bag also improves the dust layer release.

4- Acrylic Coated- Air permeable acrylic surface coated polyester for moist situations.

5- Flame retardant- Dust filter bag is not flame -proof. But it guarantees a self extinguishing feature that is applied when sparks are involved during grinding process.

6-Teflon Membrane- Membrane of dust filer bag delivers a remarkably smooth high-efficiency finish.

7-Fiber glass- Dust Filter Bag made from fiber glass is high temperature and chemical resilient woven fabric.

                8-Dust filter bag is spark proof.

                9-Dust filter bag is anti adhesive.

                10-Dust filter bag is micro porous. It is also anti acid and other special finishes.

Types of dust filter bag-

A- Fiber Glass Dust Filter Bag

The dust filter bag is manufactured from glass fiber woven fabric that is special treat. This product has good heat resistance ability and utilized at 260 degree centigrade for a long time. It is ideal heat-resistant purification matter and has good stable size with good chemical repellent power, anti water, anti humidity and outstanding dust peeling features. The purification efficiency of this kind of dust filter bag is more than 99.5 percent. Now a day the glass fiber is generally used in cement, carbon black, electric power and metallurgical industries for eliminating dust in the condition of high temperature.

B-High Temperature Filer Bags-

If collector gas stream is from 150 degree centigrade to 260 degree centigrade. In this scenario high temperature dust filter bag typed dust filter bag is implemented. Dust filter bag of this type is made of effective media on high temperature, which is mostly suitable with any gas stream. Dust filer bag of this class can be used in temperature between 150 and 260 degree centigrade in combination with strong acid or alkaline mixture. Dust filter bag of this type is made of Nomex, Ryton, Teflon and fiber glass.

C- Ptfe Membrane Lamination Filter Bags-          

Dust filter bag of this category present PTFE membrane laminated filter bags to avoid the disadvantage of regular depth filtration media. In normal media they felt fabrics at ac a media for the built up of a dust layer. Which in turn capture even more and finer substances of dust? The dust filter bag is washed continuously to eliminate some of the dust layer and then start the process all over again.

PTFE membrane lamination on this dust filter bag works surface filtration. Where the filtration is performed by a micro porous PTFE membrane which is laminated to a process well-suited filter media. The support media delivers in this dust filter bag the physical strength to fabric whereas filtration is done by the membrane. This phenomenon is termed surface filtration. This form of dust filter bag offers benefits as follows-

                1- Consistently low pressure drop throughout the life of the filter bag.

                2-Lower outlet emissions.

                3-may take process upset more easily and thus minimizes downtime.

4-Generally the life is double than a common filter bag if all other issues in the bag house remain same.

5-Lower operation and maintenance cost.

6-Great product recovery.

D-Pulse Jet Filer Bags-

This kind of dust filter bag is manufactured with sophisticated non woven felt. This is the  material which brings high overall performance and strength. This type of dust filer bag is applied for flying dust filtration in the industries.

E- Shaker / Reverse Dust Filer Bags-

Dust filer bag of this variety is produced from woven fabrics (for example spun and filament)     and non woven felt medias and employed in manufacturing plants for filtration purpose.