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What is the filtration efficiency of high-temperature resistant filter bags

October 08,2023

high-temperature dust bag is a filter material specifically used for high-temperature gas dust collection, usually made of high-temperature and corrosion-resistant fiber materials, capable of working in high-temperature, high-pressure, and corrosive gas environments. The filtration efficiency of high-temperature dust collection bags is influenced by various factors. Let's take a look below.

Filter bag material

The filtration efficiency of high-temperature resistant filter bags is related to their bag material. Generally speaking, the commonly used materials for high-temperature dust removal bags include glass fiber, polyester fiber, PTFE, etc. Among them, PTFE material has excellent dust removal performance due to its special non viscous surface, high temperature resistance, and chemical inertness.

Filter bag structure

The structure of high-temperature resistant filter bags can also affect their filtration efficiency. There are currently two main types of high-temperature resistant fabric bag structures on the market, one is needle felt structure and the other is hot melt adhesive structure. The high-temperature resistant fabric bag with needle punched felt structure has a high filtration efficiency of over 99.9%, while the high-temperature resistant fabric bag with hot melt adhesive structure generally has a lower filtration efficiency.

Gas flow rate

Gas flow rate is one of the important factors affecting the filtration efficiency of high-temperature dust collection bags. When the gas flow rate is too high, the particulate matter on the surface of the filter material is easily carried away, reducing the filtration efficiency of the high-temperature dust collection bag. Therefore, when selecting high-temperature resistant filter bags, it is necessary to consider the factors of gas flow rate.

Filter equipment

The filtration efficiency of high-temperature resistant filter bags is also affected by the filter equipment.

Generally speaking, the performance and design of filter equipment have a significant impact on filtration efficiency. When the design of the equipment is unreasonable or the performance is poor, it can lead to a decrease in the filtration efficiency of high-temperature resistant filter bags.

Overall, the filtration efficiency of high-temperature resistant filter bags can usually reach over 99.9%, and the specific filtration efficiency needs to be determined based on the actual working environment and equipment conditions.

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