SFFILTECH 300 to 600g nomex aramid filter bag for asphalt cement chemical industry
The aramid filter bag is made of 100% polyester raw material. According to the characteristics of working conditions and usage requirements, different production equipment and manufacturing processes are adopted. Mix aramid fibers with different denier numbers through needle punching, and then undergo singeing, heat setting, and rolling to produce aramid felt with high filtration performance. Then, sew a traditional aramid filter bag using aramid felt.
What is aramid filter bag
Aramid filter bags utilize high-strength aramid fibers, known for their heat resistance and chemical durability. These industrial filtration components, integral to dust collectors and environmental equipment, excel in high-temperature filtration applications and flue gas treatment. Designed for industrial use, they contribute to efficient particle removal in diverse industrial applications. The aramid fiber's chemical resistance ensures longevity, making it a reliable choice for demanding environments. These filter bags play a crucial role in enhancing air quality, exemplifying exceptional filter media performance and embodying key features such as industrial strength, environmental protection, and versatility in combating pollutants.
Two factors effect the choice of filter bags
Dust Separation Procedure
Different dust separation procedures require different weights and air permeability values for filter media.
Rules:
- 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.
Topsa: 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.
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Dust Separation Procedure |
（g/m2） |
Air Permeability |
|
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mm/s @200Pa |
l/(dm²min) @200Pa |
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Intermittent Shaking |
300-350 |
667-1000 |
400-600 |
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Shaking- and reverse air |
350-450 |
417-667 |
250-400 |
|
Low pressure cleaning |
400-500 |
250-583 |
150-35 |
|
Pulse Jet |
500-650 |
83-250 |
90-150 |
Filter bags material character
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Resistance of synthetic fiber to the influence of chemicals and to temperatures |
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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. |
Specification
|
Construction |
Needle punch felt |
|
Fiber Composition |
aramid |
|
Scrim Composition |
aramid |
|
Felt Area Weight |
300--600g/m2(±5%) |
|
Thickness |
1.8-1.9mm |
|
Mean Air Permeability |
10-15 m3/m2/min@12.7mmH2O |
|
Breaking Strength-MD(warp) |
800 N / 5cm |
|
Breaking Strength-CMD(weft) |
1200 N / 5cm |
|
Breaking Elongation( N/5cm)-MD(warp) |
25% |
|
Breaking Elongation( N/5cm)-CMD(weft) |
45% |
|
Dry Shrinkage MD(230℃(warp) |
＜1 % |
|
Dry Shrinkage CMD(230℃(weft) |
＜1 % |
|
Operating Temperatures |
<200 deg C |
|
Recommended Maximum Surge |
240 deg C |
|
Finish |
Heat set, singed, calendared W/O Repellent |
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Diameter (mm) |
Length (mm) |
Weight (g/㎡) |
|
120, 130, 133, 155, 180, 200, 250, 292, 300 |
1000, 1500, 2000, 2400, 25000, 2480, 2800, 3000, 3200, 3600, 4000, 4400, 5000, 6000, 8000 |
300, 350, 400, 450, 500, 550, 600 |
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Most commonly used dimensions |
133mm*1500mm, 133mm*2000mm, 133mm*2500mm |
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Most commonly used weight |
500g, 550g |
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We can customize diameter, length, weight and material for you |
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Application
Aramid is widely used in high temperature environment due to its heat resistance, flame retardancy and chemical stability. Its performance has been fully proved in asphalt mixing, cement kiln head, grate cooler, chemical industry, smelting and other industries.
