To maintain the quality and integrity of your industrial processes, filter bags play a significant role. They trap contaminants and impurities, preventing them from entering your systems and causing damage in a variety of industrial processes. However, the efficiency of filter bags depends on choosing the right fabric for the equipment. The right bag ensures maximum filtration of polluted particles and prolongs the life of your industrial outputs and productions. Here is a look at some factors you should consider when selecting a filter bag.
1. Match Filter Bags with Particles
Bag filtration is widely used to filter visible debris to microscopic impurities in large volumes of liquids. The filter bags should have the smallest particle size capacity to capture contaminants such as adhesives, chemicals, coil coatings, paints, oils, and pigments. To ensure maximum effectiveness and longevity, it is important to select the right filter bag, including the type and size of particles to be filtered. Whether you need a high-quality filter bag with a 3-inch diameter or a 25-inch diameter, professional filtration experts can customize any filter bag to meet the demands of the ever-changing manufacturing and filtration world.
2. Select Suitable Media Materials
There are different types of filter media for general and deep filtration in food processing, petrochemicals, or other industries. Needle felts are filter bags designed with fibers in a dense filter medium and are used for gentle filtration. Woven monofilament meshes with a specified pore size are recommended for industrial applications requiring precise filtering of unwanted particles. Melt-blown filter bags are used in sensitive manufacturing, food processing, and beverage operations where high filtration efficiency is needed.
3. Evaluate Flow Rate Needs
Industrial filter bags are made from different materials such as polyester, polypropylene, nylon, or Nomex, depending on their application. Based on their composition, their flow rates for solids, gases, or liquids are determined. Liquids with high viscosity require large filter bags with a high filter area. For solid contaminants, filter bags made from thick materials provide better filtration than those made for particle sizes. However, a bag that is too thick can reduce the flow rate.
4. Check Housing Compatibility
Before choosing a filter bag, you should consider an important factor: the filter housing. The most common filter housing materials are stainless steel, carbon steel, aluminum, exotic alloys, and plastic. They keep the filter bags in their specified place, so you should choose a material that is compatible with the particle type and conditions of industrial operation. Filter housing materials also protect filter bags from corrosion, high temperature, and pressure, and they are best suited for all purposes.
5. Monitor Pressure Requirements
Another factor to consider is the pressure of industrial filter bags. Filter bags work within a specified pressure limit, and exceeding this maximum operating pressure can damage the bags and your systems. Hence, it is crucial to monitor the pressure differential for efficient filtration. If you notice the differential pressure crosses 15 PSID, you should replace the bag immediately. Otherwise, it can cause damage, downtime, or costly repairs.