Filter bag material recommendation in 2021
When you buy a dust collector, you want to buy a high efficiency, simple maintenance and repair, cheap bag filter, and the dust bag is called the heart of the bag filter, its good or bad to directly affect the bag filter dust removal efficiency, so when buying a bag filter, the choice of filter bag material is very important, should choose what material dust bag is better, today we will A brief introduction to.
Normal temperature type dust bag
The material of normal temperature class bag is generally synthetic fiber, natural fiber or glass fiber woven into cloth or felt, followed by rolling, burnt wool, shaped into bags, usually in the flue gas temperature below 120 ℃, the requirement of the filter media with acid resistance and durability of the case, often use polyester fleece and polyester needle felt.
1、Polyester needle punching felt
Polyester needle punching felt dust bag has the advantages of high void, good air permeability, high efficiency of dust collection, long service life, etc., because of its moderate level of temperature resistance, instantly up to 120 ℃, acid resistance, moderate alkali resistance, and has very good abrasion resistance, so it is a felt filter material in the use of a large number of varieties.
2、Anti-static polyester needle felt
Acid and alkali resistant. Abrasion resistance, corrosion resistance, good response, poor electrical conductivity. Heat resistance: 130 ℃, elongation at break (%): 20-50, breaking strength (g / d): 438. Melting point (℃): 238-240, melting point (℃): 255 a 260. Specific gravity: 1.38. Polyester anti-static needle felt smooth surface, good wear resistance, high strength, through the twisting of higher strength, better wear resistance, so that the fabric breathable performance, fast water leakage, cleaning Convenient.
3、Laminated polyester needle felts
Characteristics of laminated polyester needle felt: large air permeability, low resistance, good filtration efficiency, large dust capacity, high dust stripping rate, is the best filter media for bacteria removal and dust removal. Especially after polyester felt and PTFE laminated, it can be made into various filter bags, cartridges and filters, which not only can achieve near zero emission, but also because PTFE film is not sticky and the friction coefficient is small, so the powder cake will fall off automatically, which ensures the long-term stability of equipment resistance and gives full play to the superiority of bag filter, which is the ideal filter bag material.
4、Water and oil repellent polyester needled felts
Polyester needle punched felt water and oil repellent dust bag can effectively stop water and various oil and dirt from attaching and penetrating, compared with ordinary filter media, it not only has water and oil repellent property, but also has anti-caking and easy peeling property for dust. For dust entering the bag filter containing more water and oil as well as hygroscopic and moisture-prone dust, a water film may be generated on the dust surface to increase adhesion.
High temperature type dust bag
High temperature class is usually used when dealing with high temperature flue gas (<250℃), mainly graphitized glass fiber cloth is used; in some special cases, carbon fiber filter media is used, etc. In general, needle-punched felt is used for pulse-blowing bag filter, and woven cloth is used for compartmentalized reverse-blowing bag filter or mechanical vibrating bag filter.
1、Metas needle felt bag
Metas needle punching felt dust bag with high temperature resistance, high strength, acid and alkali corrosion resistance, wear resistance, folding resistance, etc., after different surface chemical treatment and finishing technology, but also has easy to clean dust, water and oil repellent, anti-static and other functions, and a series of products for 200 °C-300 °C.
2、FMS felt bag
FMS felt bag series products have high temperature resistance, high strength, acid and alkali corrosion resistance, wear resistance, folding resistance, etc. After different surface chemical treatment and finishing technology, Fluorometh bag also has easy to clean ash, water and oil repellent, anti-static, etc.; and there are series of products suitable for different temperature bands.
3、Glass fiber needle punching felt bag
Glass fiber needle punching felt dust bag is a reasonable structure, good performance of high temperature filter material. It not only has glass fiber fabric high temperature resistance, corrosion resistance, dimensional stability, elongation and shrinkage rate is very small, the advantages of high strength, and felt layer fiber bearing single fiber, three-dimensional microporous structure, high porosity, small gas filtration resistance, is a higher speed, high efficiency of high-temperature filtration materials.
Compared with other high temperature resistant chemical fiber felt, it has the special advantages of low price, low running resistance, high filtration precision and higher temperature resistance. Suitable for steel, metallurgy, carbon black, power generation, cement, chemical and other industries high temperature flue gas filtration.
4、PPS acid-resistant needle punching felt bag
Operating temperature 190 ℃, short working temperature 232 ℃, melting point 285 ℃, the limit of oxygen index 34 ~ 35. Oxygen content of 15% or less can be applied. PPS fiber has the strength of the integrity of the retention and inherent chemical resistance, can be in a harsh environment to maintain good filtration performance and achieve the ideal service life. In filtering coal-fired boilers, waste incinerators, power plant fly ash collection treatment and other pulse-cleaning dust collectors, PPS filter felts are the ideal filter material.
In summary, each filter media has its own advantages, only the right dust bag for the customer’s own working conditions is good, we recommend customers to buy according to their own working conditions and economic situation.
At present, Hengke’s self-developed “industrial dust removal composites” are widely used in industrial dust removal filter drums, industrial dust removal filter bags and other fields, with good fastness of the composite rate, reusable, good pulse dust removal effect and so on.
PTFE membrane technology has always been the core of Hengke’s business, playing an indispensable role in biopharmaceuticals, medical devices, food and beverage, semiconductor processes, communications and other cutting-edge fields, with porosity ranging from 0.1μm to 1μm, providing functional solutions for fine filtration, bacteria and virus removal, waterproof and breathable, and sound permeability. If you need, please contact us.