Commonly used medium efficiency filters are generally high temperature resistant synthetic fiber filter cotton and high temperature resistant glass fiber filter cotton. Medium-effect filter A chemical cotton is now more common in life because it is very powerful. It can be used in high temperature environments in addition to the dust-proof characteristics of other filter cotton. In high temperature places, it is necessary to use such a kind of filter cotton.
For the medium-efficiency filter, the performance advantage of the medium-efficiency filter is also very clear to us, but no matter what the substance is, there will always be a lot of things that we need to pay attention to when using it, so here It is necessary to talk about the problems that high temperature filter cotton needs to pay attention to when using it.
The high temperature resistant synthetic fiber filter cotton is characterized by small wind resistance, good gas permeability, stable performance and strong chemical resistance. Stable performance, long-term use at 220 ° C high temperature without aging, and good dimensional stability, heat shrinkage rate of about 1% at 250 ° C, short-term exposure to 300 ° C high school will not shrink, embrittlement, soften Or melt, only begin to decompose at 370 ° C or higher, and start carbonization at around 400 ° C. High temperature resistant synthetic fiber filter cotton has good flame retardant performance, does not self-ignite, does not support combustion, has self-extinguishing property, burns insoluble drops, produces a small amount of smoke, naturally carbonizes, no fiber breakage caused by glass fiber, and fiber loss. It can effectively remove dust and resist chemical corrosion of harmful smoke, and filter tar, soot, dust and other particles generated in high-temperature drying room to prevent damage to the surface paint quality.
High temperature resistant glass fiber filter cotton is characterized by stable performance, long-term use at 240 ° C without aging, and dimensional stability, heat shrinkage rate of only 0.1% at 250 ° C, short-term exposure to 300 ° C high temperature Will not shrink, embrittlement, soften or melt, only begin to soften above 500 °C. Good flame retardant performance (never burn), up to Class A flame retardant GB, fire insoluble drops, no carbon, no shrinkage, no deformation. Good chemical resistance, strong moisture resistance, low moisture absorption and long service life. However, it should be noted that gloves should be worn during the installation to prevent the glass fiber from sticking into the hand; it should not be pulled hard because the glass fiber is brittle and easy to break.
The application of medium efficiency filter is very wide. High temperature environment such as cement plant, lime plant, chemical plant, thermal power plant asphalt plant, paint factory and electric arc furnace, oil boiler, incinerator high flue and hot air filtration are required. By the way, the medium-efficiency filter can effectively remove dust and resist the chemical attack of harmful smoke.
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