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采用无机陶瓷纤维制备气固分离膜,利用短长径比的纤维在支撑体上制备过滤膜层,对膜层的过滤阻力、滤后空气含尘量以及反吹再生性能等进行测试。经对比发现,采用长径比为8~14的硅酸铝纤维制成的过滤膜性能最佳。在1 m/min的过滤风速下该膜层的初始阻力为108 Pa,经0.6 MPa的气压循环反吹300次后的平衡阻力为145 Pa,滤后空气含尘量为195μg/m~3。对0.03~0.06 MPa的反吹压力清灰后的平衡阻力进行了测试,0.06 MPa的反吹压力下平衡阻力为146 Pa,与0.6 MPa反吹后的平衡阻力相仿,所以反吹压力≥0.06 MPa时即可达到最佳反吹效果。
The inorganic-ceramic fiber was used to prepare the gas-solid separation membrane. The fiber with short length-diameter ratio was used to prepare the filter membrane on the support. The filtration resistance, the dust content after filtration and the backflush regeneration were tested. The comparison shows that the filter membrane made of aluminum silicate fiber with an aspect ratio of 8-14 has the best performance. The initial resistance of the film at a filtration velocity of 1 m / min was 108 Pa, the equilibrium resistance was 145 Pa after 300 cycles of air blowback at 0.6 MPa, and the air dust content after filtration was 195 μg / m3. The equilibrium resistance after cleaning at 0.03 ~ 0.06 MPa was tested. The equilibrium resistance at backpressure pressure of 0.06 MPa was 146 Pa, which was similar to that after 0.6 MPa backflushing, so the backflush pressure was ≥0.06 MPa When you can achieve the best anti-blowing effect.