Bag filter roll media is made of multi-material. Three layers of filter media is hot melted by imported automatic welder. The first layer is coarse fiber filter cotton to arrest the major dust in air, thinner layer is the fiber filter paper to arrest the smaller dust, the outside layer as the strengthen protection layer.The material adapts to demands of multilayers of filter material and gradient filtration and prolongs the life-span of the product. The product can be widely used in initial and medium bag filters
What is Bag Filter?
A bag filter is an air pollution controlling industrial equipment, used prominently in a steam boiler house assembly. It is used to control the levels of sulfur dioxide and others.There are different types of bag filters such as shakers, reverse air and pulse jet type, with pulse jet type being the most promising one of outstanding results.A pulse jet type bag filter consists of a four-sided hollow metallic body which is conical at the downside. Also, a vertical squirrel cage type arrangement is there for supporting and holding the filter bags. These squirrel type cages are covered by filter bag material. After covering these cages with filter bags, it appears as a pipe like geometry downside of this cage is blind while the other side is open for the flue gases exit and pressurized air inlet.
Efficiency
Thanks to the shape of the bags and the way the device operates, bag filters allow you to keep your work environment clean and free of contaminants efficiently.
01
Application versatility
The structure of the filter bags is modular and adaptable. As a result, the sizing and shape of the filter can be adapted to the production layout and the characteristics of the line, offering an extremely versatile solution.
02
Easy maintenance
Automated cleaning systems make filter maintenance easy, reducing the time and costs involved.
03
Energy saving
Reduced resistance to the flow of air passing through the sleeves requires less energy for the overall operation of the system.
04
Reduced water management costs
Bag filters only require connection to the hydraulic circuit for the fire extinguishing system they are equipped with. Not only does this contribute to a more sustainable management of water resources, but it also results in reduced operating costs for the company.
05
Our Factory
Established in the year of 2002 and having almost 18 years of experiences in developing and manufacturing sustainable clean air solutions, and also has an excellent team of professional engineers in researching ,designing, constructing clean room equipments and hvac projects.
Our Product
80℃ pre-filters,medium & hepa filters,high-temp resistant 250℃ & 350℃ ,gaseous pollutant chemical filters,gaseous pollutant chemical filter materials.Clean work bench & laminar flow for level 100,ffu(fan filter unit),air showers,pass boxes and biosafety cabinets.
Our Certifications
Entitled to"shenzhen high-tech enterprise certification " no.Sz2016419,through iso9001 environmental quality management certification, sgs environmental certification, claimed intellectual property rights, 3 national patents.
Our Serve
Currently has the departments of r&d , production , sales ,packaging , after-sale service that could make sure to provide the clients an one-stop reliable factory for the clean room.After years of dedicating in this field of air clean , xiangnan high-tech has won the trust and recognition of the customers from all ove the world.
What is the principle of baghouse filter? When the dust-containing gas passes through the filter media, the dust is stopped on its surface and the clean air is discharged through the gaps of the filter media, which is the basic principle of air filtration technology for cloth bag dust collectors.
At present, the main types of air filtration are fiber filtration, membrane filtration (lamination or film) and dust layer filtration, all three of which can achieve the purpose of separating solid particles from aerosols, but their separation mechanisms are different.
The structure of cloth bag dust collector is mainly composed of: Upper, middle and lower parts, dust cleaning system and dust discharge mechanism. The performance of the bag filter is good or bad is in addition to the correct choice of bag material, the dust cleaning system plays an important decisive role for the bag filter.
The technical characteristics of the bag filter are that the dust removal efficiency is up to 99%, the number of dust concentration in the gas at the outlet of the dust collector is within 10 mg/m2, there is this high resolution for fine dust of submicron particle size, the processing range is wide, it is used for dust removal from the flue gas of industrial furnaces, reducing the emission of air pollution, it is not sensitive to the characteristics of dust,
Bag filter is not affected by dust and resistance, it uses glass fiber, p84 and other high temperature resistant filter media and ptfe when it can be carried out above 200℃, simple structure, easy maintenance, and lower cost than electric dust collector at the same dust removal efficiency.
Polypropylene felt bags
Are probably the most common type in use. They provide good to excellent chemical resistance to mineral acids, organic acids, alkalis, organic solvents, and micro organisms at temperatures up to 200f, at a very reasonable cost.
01
Polyester
Polyester is a suitable and low-cost material. It is a suitable material for dry temperature dust removal applications. Its applications include industries like food and wood manufacturing.
02
Aramid
Aramid fibers are an excellent example of heat-resistant and strong synthetic fibers. Based on these properties, aramid filters are suitable for high-temperature applications. This temperature property makes it suitable for heavy material industries with continuous processing. These fibers have the capability to operate at around 400 fahrenheit. Aramid fibers are suitable for use in cement, metalworking, and casting industries.
03
Fiber glass
Fiberglass is an emerging and new material. It has the capability to operate at much higher temperatures. Fiberglass has applications in chemical and mineral industries.
04
Type of Bag Filter
1. Polyester bag filters
Polyester bag filters are known for their excellent chemical resistance and high-temperature tolerance. They are suitable for a wide range of applications, including water treatment, pharmaceuticals, and food processing. Polyester bag filters offer good filtration efficiency and can effectively capture solid contaminants.
2. Polypropylene bag filters
Polypropylene bag filters are commonly used in applications where chemical compatibility and high dirt-holding capacity are required. They have excellent resistance to acids, alkalis, and organic solvents, making them ideal for chemical processing, oil and gas, and wastewater treatment industries.
3. Nylon bag filters
Nylon bag filters are known for their high strength, durability, and abrasion resistance. They are commonly used in applications where fine filtration is required, such as paint and coatings, electronics, and automotive manufacturing. Nylon bag filters offer excellent particle retention and can effectively remove small contaminants.
4. Ptfe bag filters
Ptfe bag filters are highly resistant to chemicals, heat, and moisture. They are suitable for applications involving aggressive chemicals, high-temperature gases, and corrosive environments. Ptfe bag filters are commonly used in industries such as pharmaceuticals, chemicals, and metal processing.
5. Fibreglass bag filters
Fibreglass bag filters are known for their high-temperature resistance and excellent dimensional stability. They are commonly used in high-temperature applications, such as incineration, power generation, and cement production. Fibreglass bag filters offer superior filtration efficiency and can withstand extreme operating conditions.
Each type of bag filter has its own advantages and limitations, and the choice depends on the specific requirements of your industrial processes. Factors such as temperature, chemical compatibility, particle size, and filtration efficiency should be taken into consideration when selecting the right bag filter. Now that we have a better understanding of the different types of bag filters, let's delve into understanding different filtration requirements.
Dust collection source
Choosing the appropriate bag filter requires an understanding of the major sources of dust formation. The filtration effectiveness and filter media are affected by dust particle shape, size, and abrasiveness. Dust formation in industrial settings is greatly influenced by a pneumatic conveying system, which is usually used for bulk material transportation. Thus, using bag filters in a pneumatic conveying system is essential to maintain air quality and equipment integrity that effectively removes and captures particles from the atmosphere. Apart from that, crushers, bunker tops, vibratory screens, and mills like industrial equipment generate dust.
Air volume for your industry
Various elements such as facility size, dust-producing activities, and regulatory requirements affect the air volume or airflow rate in the industry. This will influence the selection of a bag filter that is suitable for your industry. It is measured in m ³/h or nm ³/h.
Filter fabric
Effective filtration depends on selecting the right filter fabric considering its durability, resistance to chemical corrosion or abrasion, efficiency and dust release. Some popular examples of bag filter fabric are polypropylene, polyester, nylon, ptfe, acrylic and fibreglass. Consider the fabric with robust temperature and chemical resistance for your specific industrial application.
Dust type
The performance of filtration is impacted by the wide variations in dust properties. It can contain everything from coarse particles like metal shavings or wood chips to small particles like silica dust. When choosing the right filter media for creating filtration systems, it is essential to know the composition and size distribution of dust. Selecting the ideal dust collector is made easier by researching product kind, emitted particle type, and bag filter type. Moreover, you must learn the micron rating of every particle type to find the right bag filter for our industrial application.
Temperature and moisture resistance
Make sure to choose a bag filter that can tolerate different temperatures and moisture levels as per your specific industry requirements. Hence, it is crucial to choose heat-resistant fibres that are needed for high-temperature operations like metal smelting or cement kilns. Moreover, the filter should be waterproof or moisture-resistant when used in a damp or humid environment. Polyester has excellent absorption capacity and resistance to oxidation, which makes it a good synthetic material for bag filters. Make sure to inspect the bag filter before installing it to ensure its optimum operational capability.
Exhaust fan type
What type of exhaust fan you install in your industrial facility has a major impact on the effectiveness and performance of a bag filter system. Consider the fan size, airflow capacity, static pressure, and energy usage before selecting the exhaust fan. When the bag filter and exhaust fan have proper operational coordination, it will ensure the best airflow and pressure conditions for efficient dust collection. The exhaust fan is in charge of moving dust-laden air from dust sources to the bag filter. So, it needs to be designed properly to produce the required airflow and maintain the design air volume.
Pressure and loss of pressure
In order to ensure the bag filter system operates effectively, it is essential to know the pressure needs and pressure loss characteristics of the system. Check for ductwork resistance in the facility and how the equipment layout impacts the pressure drop. If you want to minimise the pressure drop, make sure the facility has consistent airflow and energy efficiency. Moreover, the static pressure value of the micro fan and its installation position before and after the bag filter should be considered.
Industry specific requirements
It’s essential to ensure you comply with your industry-specific air pollution regulations to ensure the bag filter operates effectively.
Chemical processing
Liquids are filtered in the chemical manufacturing processes to remove impurities, ensure product quality, and protect equipment.
Food and beverage processing
Water, juices, oils, and syrups pass through filters to remove particles, bacteria, and other contaminants that can affect the taste and quality of the end product.
Oil and gas production
Bag filters are used in the oil and gas industry to remove impurities and solid particles from the drilling mud, fracking fluids, and other liquids used in the extraction and processing of oil and gas.
Pharmaceutical manufacturing
Filtration is a critical step in the creation of sterile pharmaceutical products, including bulk drugs and liquid oral suspensions.
Paints and coatings
Particulates from paint and coatings need to be filtered out to ensure consistent quality and reduce defects in the finished products.
Water management
Bag filters are used in municipal and industrial water treatment facilities to remove suspended solids from the water before it enters the treatment process. Bag filters can also be used to remove impurities from wastewater before it is discharged into the environment.
Metal working
Fluids used in the metalworking process like coolant, oil, and water can be filtered for reuse or recycling.
Automotive
As an industry that combines metalworking, painting, casting, and other processes, there are multiple applications for liquid filtration in the automotive industry.
Bag filter is a common water treatment equipment, similar in nature to precision filter, I believe that everyone will use it more or less in daily life, but as we all know, in many cases, when people use bag filter still can't follow the instructions.
1. Pay attention to replace the filter bag.
If the pressure difference is found to exceed the normal range during inspection, the filter bag should be replaced in time. When replacing the filter bag, please pay attention to the following items.
(1) Before installing the filter bag, please soak it in the pre-wetting solution for a few minutes, because its clear water is not very good.
(2) When installing, please be sure to refer to the installation manual to avoid mistakes as much as possible.
2. When operating the bag filter, please follow the steps below.
(1) When pressure is found at the outlet, close the output valve in time. If you don't pay attention to this, it will bring very bad consequences.
(2) When opening the exhaust valve, be sure to check whether the pipe connection is correct. If you ignore this point, when filtering some harmful substances, it will cause harm to relevant personnel and pollute the surrounding environment.
(3) It is also important to check the pressure gauge.
3. Test the filtration quality.
Once there is a problem with the filtration quality, it means that there is a problem with a certain part of the equipment. At this time, it is also important to stop the operation and check.
After achieving the above operations, the use of bag filters is no longer a problem. People will get a lot out of it and use it for better production. If you do not pay attention during use, the damage may be serious. Therefore, some matters should be paid attention to during use, to avoid damage and other problems as much as possible, and to prolong its service life.
Through 18 years of focusing on air purification equipments , Shenzhen Xiangnan High-temp has been the leading supplier of the big companies such as Foxconn, LG , BYD , Oppo, Huawei etc for supplying the air clean systems. our Dr. engineers has almost 25 years of experience in the field of air filter so we have the ability to manufacture high quality air filters and clean room enquipments on the international markets, aways satisfying various of any designing demands from the clients.
