what is filter bags？
Filter bags are also commonly referred to as dust collector filter bags、dust filter bag、baghouse filter bags，As the filter element, the filter bag is a key part of the filtration process, filter bag quality determine the filter efficiency for the end user. our own high technology filter cloth,with patent structure ring mouth and manfactured by the professional production equipment can meet the application of various fields.
dust collector filter bags
baghouse filter bags
Two factors effect the choice of filter bags:
1、Temperature: As the main component of dust collector, it is very important whether selected filter bag adapt to the flue gas temperature . Such as, the heat resistance of filter material exceeds the flue gas temperature too much, which will cause the waste of high temperature filter material as well as big investment in equipment. If it is lower than that of flue gas, it is possible to cause the burning of bag.
So how to select the filter material according to the flue gas temperature? It can be divided into the following according to the temperature:
normal temperature filter material: below 130 degrees Celsius,
medium temperature filter material 130~180,
high temperature filter material 180~280.
2、flue gas composition: It includes the content of dust, specific gravity, particle size, viscosity or not, the water content in the flue gas and other parameters. All of these decide the way of cleaning, filter bag material treatment,filtration velocity. Usually, if the dust is dense, sticky and light, we usually choose pulse bag house and pulse bag filter. In addition, the filtration velocity is control more than 1.2m /min, sometimes 1m /min. As well as, the Filter material treatment is generally membrane, water and oil repellent, anti - static, oriented anti adhesive treatment.
filterbag burned by high temperature inside the hooper
filter bags damaged by the spark
Polyester Filter Bag
Good resistance to oxidation,is the cheapest filter media in the bag filter filtration field.Applicable to mine,limestone,cement,iron and steel industries...
Polypropylene Filter Bag
Restricted resistance to oxidation ,but excellent resistance to Hydrolysis ,Acids and Alkalis.Applicable to food ,fertilizer ,electroplating ,flour ,sugar and pesticide industries...
PPS Filter Bag
excellent resistance to acids
and alkalis.Applicable to the
working conditions with low oxidation gas from coal-fired boiler,waste incineration,metal smelting...
Aramid Filter Bag
Fire and High temperature resistant.applicable non-ferrous metal production,ceramic,glass industries,Kilin in cement factories and blast furnace in steel factory...
Acrylic Filter Bag
Dust bag with excellent chemical resistance and resistance to hydrolysis.Applicable to detergent,waste incineration,asphalt,spray dryer,coal mill and power plant industries...
FMS Filter Bag
FMS filter media can against high temperature resistant.Good at anti-acid and alkali.Anti-abrasion ,anti-breaking,easily deducting,water and oil proof.It also with high strength...
PTFE Filter Bag
Excellent resistance to all chemical influences.Applicable to the working condition with high corrosive gas and high temperature,such as chemical industry,waste incineration industry and non-ferrous metal production...
Basalt Filter Bag
stable size, good strength，lower price than other high temperature resistance chemical fiber，when you meet the high temperature plant, we have to find the right material for it, basalt maybe the the good one to choose...
P84 Filter Bag
Excellent resistance to high peak emperature.Applicable to the working condition with corrosive gas,such as chemical ,metal smelting,waste incineration industties ,cement kiln and coal-fired boiler...
Envelope Filter Bags
We can make the envelope filter bag with different material like polyester, aramid, pps and othere,and the most popular material is the polyester felt .Polyester filter bag widely used in mine, limestone, cement, iron and steel industries,alumina delivery,and pharmacy industry...
Reverse Air Bags
In a reverse air bag house, the dirty air flows from the inside-to-outside, so that the dust collects on the inside of the filter bag. The filter bags are tubular, open at the bottom and connected to a tube sheet. They are supported from the top through a spring or J-bolt suspension system...
Fiberglass Filter Bag
Glass fiber filter cloth is made of the fiberglass yarn,with special treatment like graphite,silicon,ptfe dipping, against acid treatment and other chemical treatment. it is an ideal high temperature resist filter cloth . Used in industrial dust clean area,bag house, air pollution and valuable dust recycling...
Dust Separation Procedure
Different dust separation procedures require different weights and air permeability values for filter media.
- The more effective the cleaning process, the more compact and heavier the filter medium can be.
- The higher the emission control standards, the heavier the filter medium should be.
Tops：If these factors are well considered in advance, running cost like electricity for the fan or pressured-air for the cleaning pulses can be saved later on in a great amount.
Dust Separation Procedure
Shaking- and reverse air
Low pressure cleaning
Filter bags material character:
|Resistance of Synthetic Fiber to the Influence of Chemicals and to Temperatures|
|Filter Type||Continuous Temperature||Peak Temperature||Resistance to Hydrolysis||Resistance to Acids||Resiatance to Alkalis||Resistance to Oxidation||PH Value||Application||Remark|
|PP||90℃||95℃||Excellent||Excellent||Excellent||Restricted||1-14||Applicable to food, flour, sugar, fertilizer, electroplating and pesticide industries||Restricted resistance to oxidation, but excellent resistance to hydrolysis|
|Co-Acrylic||115℃||120℃||good||moderate||moderate||good||6-13||Applicable to dergent industry and coal powder collection||Good resistance to hydrolysis|
|Co-Acrylic||125℃||140℃||good||good||moderate||good||3-11||Applicable to detergent, waste incineration, asphalt, spray dryer, coal mill and power plant industries||Good resistance to hydrolysis|
|Polyester||150℃||150℃||Restricted||moderate||Restricted||good||4-12||Applicable to mine, limestone, cement, iron and steel induestries,alumina delivery, electrolytic aluminium, non-ferrous metal production, wood processing, food processing and pharmacy industry.||Good resistacne to oxidation, while limited resistance to acids and alkalis. Serive life will be affected by water content under high temperature|
|PPS||190℃||200℃||Excellent||Excellent||Excellent||moderate||1-14||Applicable to the working conditions with low oxidation gas from coal-fired boiler, waste incineration, metal smelting and chemical industries||Moderate resistance to oxidation, but excellebnt resistance to acids and alkalis.|
|M-Aramide||200℃||220℃||moderate||moderate||moderate||moderate||5-9||licable tp asphalt, non-ferrous metal production, ceramic, glass industries, Kilin in cement factories and blast furnace in steel factory||Moderate resistance to oxidation. Characteristics will be influenced by water content under high temperature.|
|Polyimide||240℃||260℃||good||moderate||moderate||good||3-13||Applicable to the working condition with corrosive gas, such as chemical, metal smelting, waste incineration industries, cement kiln and coal-fired boiler||Excellent resistance to high peak temperature|
|PTEE||250℃||280℃||Excellent||Excellent||Excellent||Excellent||1-14||Applicable to the working condition with high corrosive gas and high temperature, such as chemical industry, coal-fired boiler, waste incineration industry and non-ferrous metal production||Excellent resistance to all chemical influences.|
filter bag Related parts:
filter bag venturi
filter bag cage
filter bag sewing sewing thread
filter bag snap band
filter bag snap band strip
filter bag pulse valve
Engaged in creating a clean and fresh environment for people, Sffiltech is specialized in filter bags. As one of the best manufacturers and suppliers, we can assure you the best quality and stable performance of our custom products. Please rest assured to buy.