| Title |
Development of Nano Ceramic Filter for the Removal of Ultra Fine Particles |
| Authors |
김종원(Jong-Won Kim) ; 안영철(Young-Chull Ahn) ; 이병권(Byeong-Kwon Yi) ; 정현재(Hyeon-Jae Jeong) |
| Keywords |
이중층 필터 ; 압력손실 ; 효율 ; 열전도도 ; 투습성 Double layer filter ; Pressure drop ; Efficiency ; Thermal Conductivity ; Water vapor permeability |
| Abstract |
Airborne particulate matters have two modes of size distributions of coarse mode and fine mode. The coarse mode which is formed by break down mechanism of large particles has a peak around the 100㎛, and the fine mode formed by condensation and build up mechanism of evaporated vapors has a peak at several ㎛. The coarse mode particles can be removed easily by conventional collecting equipments such as a cyclone, an electrostatic precipitator, and a filter, however the fine mode particles can not be collected easily. Usually the fine mode particles are generated in the high temperature conditions especially through boilers and incinerators, so the high efficient and temperature filter is essential for the filtration. In this study, a nano ceramic filter for the removal of fine particles in the high temperature is developed and tested for several characteristics. The nano ceramic filter has double layer of micro and nano structure and the pressure drop and the filtration efficiency for 0.31㎛ at 3㎝/s are 15.45mmAq, and 96.75%, respectively. The thermal conductivity is 0.038W/m?K, and the coefficient of water vapor permeability is 3.63g/㎡?h?㎜Hg. It is considered that the sensible heat exchange rate is very poor because the low thermal conductivity but it has high potential to exchange latent heat. |