冶金烟气微孔陶瓷管膜研制及深度除尘应用的研究

摘要

This paper puts forward the new technology of making asymmetric ceramic composite film tube. First, materials including SiC and Al2O3 are fired into the porous ceramic substrate after static pressure molding. The asymmetric ceramic tube membrane is made by high temperature sintering after reaching the required film thickness by leaching pulp and drying for many times. The high temperature flue gas composite membrane filter can be applied to remove dust and gas in metallurgical processing. SEM and EDS are used to characterize the porous ceramics matrix and microporous composite membrane. The results show that they have good pore structure and physical properties. A set of cold model test devices for measuring dust filtration efficiency of asymmetric ceramic composite membrane is designed and reasonable parameters are determined through experiments.%提出了将SiC、Al2O3等原料等静压成型后烧制成多孔陶瓷基体，再通过多次浸浆、干燥达到所需膜厚度后，采用热喷涂制成非对称陶瓷复合膜管的新工艺技术。研发出能够处理高温烟气的微孔陶瓷管复合膜除尘器，应用到冶金高温烟气中进行深度除尘和净化。采用了SEM、EDS等手段对多孔陶瓷基体和微孔复合膜进行表征，结果表明其具有良好的微孔结构和物理性质。自行设计了一套测定过滤效率的冷态试验装置模型，并通过实验确定了合理的参数。