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Things to Keep in Mind When Choosing a Baghouse Filter Bag

The main benefit of fabric filter bags is to capture and remove air borne dust thus ensuring clean air. Here is how to pick the best fabric filter bags.

Chemistry is critical factor in selecting the right filter bag to match your specific needs. 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. It is also used in boilers and carbon black plants due to its low friction properties which enable it to effectively release dust cake.

The most important consideration when choosing a baghouse filter is the dust properties and particles being filtered. The nature of dust particles to be filtered may vary as some are fine particulate, abrasive of even bulky. Also, keep in mind that the fabric filter bags should support combustion if you are filtering explosive material.

Temperature is another important consideration when selecting the right filter bags. 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. Aramid and felt polyamide are fabrics that are designed to work well in very high inlet temperature.

In addition, the moisture level in your system may affect the type of baghouse filters you choose. Due to its strong characteristics, polyester fabric is used in chemical, agriculture and woodworking applications as it interacts well with moisture. 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.

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