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Tips for Choosing the Best Fabric Filter Bags

Before you choose a filter bag to capture dust in your baghouse system, it is important that you consider things like size, moisture level, temperature and chemistry. Here is how to pick the best fabric filter bags.

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. Teflon is an example of a fabric filter that has chemical resistance properties when it comes to dry and wet heat degradation. Furthermore, it is excellent for cake dust release therefore ensuring that not much dust remains of the filter bags after cleaning.

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. Dust characteristic may vary from bulky, fine and coarse. There are also dust particles that are corrosive, hence, it is wise to choose filter bags that are constructed to support combustion and this may include; acrylic felt, epitropic felt, polyester and polypropylene.

The level of temperature in the baghouse system will also help you determine the kind of filter bag to purchase. The type of bag you choose will depend with the highest level of temperature it is capable of handling. If the temperatures are high, find a fabric that is heat resistant to prevent melting or damage. Fabrics that re great for high temperature filtration includes; felt polyamide and aramid.

It is recommendable to consider the moisture level to help you select the most appropriate bag for your filtration system needs. A good fabric that interacts well with various moisture conditions is polyester and this makes it utilized in baghouse systems for agriculture, and woodworking. Polyester absorbs energy during filtration and is resistant to various oxidizing agents, organic solvents and mineral acids.

Pick the right size of filter bag that will fit well in your unit’s dust collection system. The length of the filter bags matter because using a longer bag will result to an increase in filtering area and less number of dust collectors will be used. On the other hand, working with a short filter bag will not be effective because a small filter area is covered and the number of bags increased.

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. The company should have a vast selection of baghouse filter bags so it will be easy for you to choose the correct bag based on its application and your baghouse system.

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