The dust filter bag is the heart of the dust collector. The selection of the filter bag is very important. It directly affects the dust removal effect of the dust collector. The fabric and design of the dust filter bag should be as efficient as possible, easy to remove dust and durable. The selection of filter bags should be selected from the following aspects: temperature, humidity and chemical properties of the gas; particle size; dust concentration; filtration wind speed; dust cleaning methods and other factors.
The bag filter generally selects the filter bag according to the nature of the dusty gas, the nature of the dust and the cleaning method of the dust collector. The following principles should be followed when selecting:
① The performance of the filter bag should meet the general conditions and special requirements of the production conditions and dust removal process.
②Under the above premise, filter bags with long service life should be selected as much as possible, because long service life can not only save operating costs, but also meet the requirements of long-term gas discharge.
③ When selecting a filter bag, a comprehensive comparison of various filter materials should be made, and a so-called “good” filter bag should not be used to adapt to various working conditions.
④In gas properties, dust properties and dust cleaning methods, the main influencing factors should be grasped to select filter bags, such as high temperature gas, corrosive gas, flammable dust, etc.