Research and application of a high-precision composite filter material with corrosion and erosion resistance
In response to the short service life,poor resistance to dust erosion,and non-compliance with dust emission standards of conventional glass fiber composite felt or polytetrafluorovinyl(PTFE)needle-punched felt coated products during the ultra-low emission transformation of iron and steel coking,a high-precision composite filter material with corrosion and erosion resistance was developed based on the characteristics of the on-site working conditions.The physical properties,temperature resistance,wear resistance,chemical corrosion resistance,and dynamic filtration performance of the high-precision composite filter material were tested and analyzed.The research results show that the high-precision composite filter material can withstand the high temperature of 230℃ or above for a long time,with a short-term service temperature of 260℃.Its temperature resistance and chemical corrosion resistance are close to those of conventional PTFE needle-punched felt coated filter material.The wear resistance and VDI filtration performance of high-precision composite filter material under high wind speed conditions are better than those of conventional PTFE needle-punched felt coated filter material.Under working conditions,it can achieve ultra-low emission and stable operation.
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