- High temperature resistance
Filmedia chooses best alkali-free fiberglass raw material in China(Chengdu Shiyuan， Shandong Yihecheng ect). Temperature threshold of Alkali-free fiberglass is over 260 ℃which is much higher than regular fiberglass which is only 220 ℃. Fiberglass membrane filter material produced by alkali-free fiberglass filter material can be continuously operated from acid due point to 260 ℃. Fiberglass bulged membrane filter material can be baked in an oven at 280 ℃ for 2 hours without any change of the physical and chemical indicators and the color which is not available in other filter materials.
- Hightensile strength and folding resistance
Tensile strength of Fiberglass bulged membrane filter material is not destroyed by needle，which can be several times more than regular felt filter material. Due to its high strength, it can be processed into filter bags of 10 meters or even 12 meters. The filter bag does not shrink under high temperature, and almost keeps the original size, which does not affect the gap between the filter bag and the cage, and can ensures the cleaning effect. The elongation of the filter bag is less than 8%. During the filtration, the weight of the filter material and the dust does not elongate the bag, and the cyclical damage caused by the air pressure cleaning to the filter bag is also greatly reduced.
Fiberglass bulged membrane filter material is made of ultra-fine glass fiber with a diameter of 3.8-5.0μm as the raw material. The finer the diameter of the single fiber of the glass fiber, the better the folding resistance, and the longer the service life of the produced filter material.
We can concludethrough experiment that folding resistance of 5.0 μm fiberglass is 2.5 times stronger than 9 μm fiberglass (below); and 3.8 μm glass fiber 5 times stronger than that of 9 μm fiberglass. That is to say, from the perspective of folding resistance, the service life of the fiberglass with a diameter of 3.8μ and a diameter of 9μm can be very different.
- Oxidation resistant, corrosion resistant
At room temperature, Fiberglass bulged membrane filter material is resistant to organic and inorganic acid attack，and maintains good performance in weak alkali. After experimental testing and analysis, the acid resistance of the Fiberglass bulged membrane filter material developed by our company is many times stronger than regular fiberglass filter material.
iberglass bulged membrane filter material is not oxidized by oxygen or nitride, so it is not necessary to consider the high and low oxygen content in the dust collector. Therefore, the glass fiber has outstanding oxidation resistance and corrosion resistance, and the filter material is completely impregnated with PTFE emulsion. The PTFE emulsion impregnation can form a dense protective film on the surface, so the filter bag is less eroded during operation of the dust removal equipment.
- Waterproof
Our Fiberglass bulged membrane filter material adopts a unique process in the finish treatment method. It has excellent waterproof performance under normal temperature and high temperature condition, which is more conducive forthem to be used in cement working condition. The filter material has excellent water resistance, not only the waterproof level can reach 3.5 grades under normal temperature state , but also can reach 4 grades under the high temperature condition.
- Easy to clean, low resistance
The thickness of the filter material is about 0.9mm, only 1/3 of the felt filter material, and the texture is soft. While cleaning the dust, the filter material is serpentine shaking, and the dust is easy to be be peeled off. With low dusting pressure , less cleaning times, and prolonged cleaning cycle, It can effectively reduce the consumption of compressed air, maintenance amount and operating costs. Its substrate is a two-dimensional glass fiber bulk filter cloth. Due to its structural characteristics, the running resistance is more stable than three-dimensional filter material.
In addition, due to the special self-cleaning and hydrophobic properties of the PTFE (polytetrafluoroethylene) film, the membrane filter material is easy to be cleaned, and the dust does not penetrate into the filter material. Sothe flux of airflow can achievemaximum without increasing the running resistance.It is the ideal high temperature flue gas filter material, as shown below.
Due to the self-cleaning property of PTFE, the surface of the membrane is very smooth, non-sticky and hydrophobic. Dust does not adhere to the surface of the filter bag. The resistance and filtration efficiency is stable,and the cleaning cycle is longer. So it is not necessary to clean it very often. And the friction between the filter bag and the bag cage is reduced, and the filter bag breakage is also greatly weakened, so the filter bag has a longer service life, generally 4-6 years.
- High filtering Rating
The micropores on the surface of the Fiberglass bulged membrane filter material are small and uniform (0.10-2.0μm), which can separate all the dust of larger particle size than the micropores. Different from the deep filtration mechanism of ordinary filter material through powder layer filtration, the filter material is mainly surface filtered by a microporous film. The figure below is a schematic diagram of two different filtration mechanisms of common filter material and membrane filter material. According to the picture, the filtering mechanism of the filter material surface can almost intercept all the dust in the dust-containing gas stream, so this filter material has extremely high filtration efficiency.
In summary, the Fiberglass bulged membrane filter material is serpentine shaking while cleaning , the dust is easy to be peeled off. With lower dusting pressure , less cleaning times, and prolonged cleaning cycle, It can effectively reduce the consumption of compressed air, maintenance amount and operating costs. With ideal air flow distribution, proper designed cleaning system, pressure difference of Fiberglass bulged membrane filter material during operation can be very stable，and the system resistance increases very slowly after long-term operation.
The Surface filtration of Fiberglass bulged membrane filter material has the following characteristics:
Fine dust capture rate improved and dust emissions reduced
Filter bag cleaning ability improved, low resistance, low pressure difference
Durable, longer service life
Fan energy consumption reduced
Ventilation increased
Accumulation of dust reduced and blocking situation prevented