Preparation of porous ceramic membrane for gas-solid separation

Membranes for gas-solid separation were prepared by using short fibres as starting materials. A suitable viscosity and solid content for the coating suspension were determined to be 66-75 mPa.s and 10-12.5%, respectively. The observation by scanning electron microscopy shows that the short fibres cover the entire surface of the support uniformly. The filter resistance and the value of the fine particulate matter (VFPM2.5) were studied. The baseline filter resistance of the membrane (288.1 Pa) was lower than that of the membrane prepared by using alumina powder (366 Pa). The value of the fine particulate matter (VFPM2.5) was 60 mu g/m(3), which meets the emission standard of GB3095-2012 (35-75 mu g/m(3)). These results demonstrated that the membrane prepared with short fibres shows higher filter efficiency and better regeneration performance.