Selecting the right type of filtration system for your industrial application can be a little bit tricky. So, how do you know what type of filter is best for your system?
What Are Bag Filters?
Bag filters are commonly utilized in many different industrial sectors. This type of filter removes particulates from dirty liquid released by various industrial processes. These filters are created using long, cylindrical bags made of woven fabric. As contaminated matter passes through the fabric, unwanted particles like dirt, dust, and other solid contaminants are removed, leaving only clean air or water within the system. Periodically, these filters must be cleaned, typically by a pulse jet.
Bag Filter Pros
- High Capacity: Bag filters can capture a significant amount of contaminants before needing to be cleaned due to their size. This makes them an ideal option for applications dealing with high particulate volumes.
- Durability: Bag filters are made of durable material, which makes them ideal for use in applications involving the removal of heavy or coarse contaminants.
- Versatile: Due to their ability to capture contaminants in a range of different sizes, bag filters can be used in a wide range of applications.
- Low Maintenance: Because bag filters are both large and durable, and they need little maintenance aside from being cleaned occasionally.
- Cost-effective: Bag filters do not require a large investment up-front, making them a cost-effective option for industries with tight budgets.
Bag Filter Cons
- Space Requirements: One of the downsides of opting for a bag filter system is the amount of space required for the system itself. This type of filtration system can take up considerable space within a facility.
- Maintenance/Replacement: While maintenance requirements are relatively low for bag filters when cleaning or replacing a filter, the process can be challenging.
- Efficiency: Bag filters may not be as efficient as cartridge filters.
- Contaminant Sizes: Applications with small-sized contaminants may opt for a different filtration system, as bag filters can only remove larger contaminants.
What Are Cartridge Filters?
Cartridge filters are tubular filtration devices that are used in a variety of different industrial applications. The filter is made up of a cylindrical, pleated filter housed within a filter casing made of metal or plastic. Matter is directed through the filter media, where contaminants are captured. Cartridge filters are designed to capture small impurities and are pleated to increase the filtration surface area.
Cartridge Filter Pros
- Compact Size: Cartridge filters require much less room than other types of filters. This makes them a great choice for applications with limited space.
- Easy Maintenance: The maintenance of cartridge filters is uncomplicated, typically only requiring removing and rinsing the cartridges within the application before putting them back into the system.
- High Filtration Level: Cartridge filters can remove even the smallest particles and contaminants from media, which is ideal for applications requiring high purity or working with hazardous contaminants or materials.
- Flexible Media Options: Different cartridge media can be utilized for applications with specific needs, tailoring them to the application’s needs.
- Water Conservation: Unlike other cartridges, which may require backwashing, cartridge filters save on water costs by avoiding backwashing altogether.
Cartridge Filter Cons
- Cost: The up-front cost of installing a cartridge filtration system can be higher than other types of filters.
- Maintenance Costs: Cartridges will need to be replaced semi-regularly, which can add to maintenance costs.
- Flow Restriction Potential: When cartridges are not properly maintained, they can experience clogs, restricting media flow throughout the system.
- Particle Size Limits: Cartridge filters are ideal for applications dealing with contaminants of smaller sizes. Larger contaminants can clog cartridge filters quickly, requiring more maintenance and potentially impacting the flow of media within the application.
- Usage Constraints: Applications involving highly contaminated media may require more frequent maintenance, and flow rate impacts may be due to filter clogs.
Things to Remember When Selecting a Filter
- Application Requirements: One of the things to keep in mind when choosing a filter for your application is the flow rate requirements of your system. Applications with higher flow requirements may benefit from opting for a bag filtration system.
- Contaminant Size: A cartridge filter is ideal for applications that require the highest levels of purity or those working with hazardous materials. Systems that need to filter larger contaminants will typically be better off selecting a bag filtration system.
- Space Availability: Facilities with a large amount of space for a filtration system will be just fine when choosing either bag or cartridge filters. However, those with space limitations will likely want to select a cartridge filtration system.
- Budget: Applications with a tighter budget may opt for a more cost-effective filtration system, like a bag filter.
ESA For Your Filtration Needs
The experts here at ESA have a wealth of knowledge regarding industrial filtration systems that will work best for any type of industrial application. If you’re unsure what filter type is best for your application, call us today and let our trained experts help you.