摘要
选用3种不同丝径的FeCrAl纤维丝,通过配毡、铺毡、烧结和压制等过程制备出3种不同孔径的FeCrAl纤维毡,分析了孔径对过滤效率,初阻力和容尘量的影响。发现孔径越大,初阻力变小,容尘量增加,过滤效率降低。部分参数参考VDI3926标准对3种纤维毡进行了脉冲清灰测试,在面速为0.06m/s,粉尘浓度为2g/m^3,反吹压差为3500Pa时,丝径为22μm的样品3表现出最好的清灰效果,样品增重达12.31g,形成滤饼后的效率高达98.5%,30次人工老化共耗时近3h,寿命最长。
Three kinds of Fe Cr Al fibers with different pore sizes were prepared by design, fabrication, sintering and repression. The pore size, resistance and capacity were tested. The results show that the initial resistance and efficiency is reduced, while the capacity is increased with the increase of pore size. The pulse-jet cleaning of fibers were operated based on VDI3926 standard at different face velocity and cleaning pressure. The result indicates sample 3 with 22 μm fiber diameter have the longest cleaning lifespan. The four stages of the standard VDI3926 are completed in the face velocity of 0.06 m/s, the dust concentration of 2 g/m^3 and pressure drop prior to pulse-jet cleaning is 3500 Pa. The sample increment weighing reaches 12.31 g, the average efficiency is as high as 98.5% and consumed time is 3 h after 30 times artificial aging. The fiber with 22 μm diameter shows the longest lifespan.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2017年第11期3204-3207,共4页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China(51134003)
National Science and Technology Support Standard(2012BAC02B05)
Shaanxi Science and Technology Co-ordination(2012K72B03-01-04)
关键词
孔径
效率
阻力
脉冲清灰
寿命
pore size
efficiency
resistance
pulse cleaning
lifespan
