The main benefit of fabric filter bags is to capture and remove air borne dust thus ensuring clean air. The following are some things that you should contemplate when choosing a baghouse filter bag.
The first step is to determine whether the filter bags you are considering can withstand the chemical make up in the dust particles. It’s chemistry with the gas stream can be highly active/acidic, hence, you want a filter bag that will be able to resist and withstand the dust particles that are chemically active. For example, if your system has chemically active particles, consider choosing Teflon fiber which can be used in sever conditions due to its resistance to moist and dry heat degradation. Also, Teflon is great because it ensure dust cake release when the filter bags are cleaned.
Before you purchase a fabric filter for your system, it is important to know the size of dust particles that you are looking to filter. Determine if your dust is bulky, fine or abrasive as the density will greatly impact the type of dust collector you select. If you are dealing with toxic, corrosive or comestible dust particles, filter bags with fiber such as polyester, acrylic, and polypropylene are ideal since they support combustion.
When selecting your filter bags, you need to contemplate the temperature in the baghouse. If the temperatures in the baghouse system are very high, then you need to choose filter bags that are able to withstand it. Finding the right fabric filter bag based on your inlet temperature is crucial because fabrics that cannot withstand high temperatures may be damaged when the temperature rises. Therefore, instead of using thermoplastic, consider fabrics such as felt polyamide and aramid.
Similarly, the moisture level is an important variable that will help you find the right type of fabric for your application. Polyester is used in most baghouse systems like agriculture and woodworking because it can operate in ambient conditions. Besides, it has energy absorption properties and resists most organic solvents, mineral acids and oxidizing agents.
Pick the right size of filter bag that will fit well in your unit’s dust collection system. A long filter bag may be effective in ensuring that you use few dust collectors and it will be able to cover a large filtering area. But on the other hand, when the filter bag is too short, there will be reduced efficiency, increase in number of dust filter bags and reduced filtering area.
Make sure that your brand of filter bags is from a company that is highly recognized for manufacturing the best baghouse filter bags for your application. When making your purchase, ensure that the seller provides you with a variety of fabric filter bags so you can choose the most suitable for your application.