PREPARATION OF CERAMIC MEMBRANE FILTERS,FROM WASTE FLY ASH,SUITABLE FOR HOT GAS CLEANING |
| |
| Institution: | 1. Institute of Chemistry, Komi Science Centre, Ural Division, Russian Academy of Sciences, Syktyvkar, Russian Federation;2. ITMO University, St. Petersburg, Russian Federation;3. Institute of Automation and Control Processes, Far Eastern Division, Russian Academy of Sciences, Vladivostok, Russian Federation;4. Syktyvkar Forest Institute, Syktyvkar, Russian Federation |
| |
| Abstract: | The preparation and performance of ceramic membrane filters made from fly ash from coal-fired power stations were investigated. The porous and crack-free ceramic composite membrane was prepared by dip-coating a stainless steel mesh in a slurry of fly ash. Membrane properties investigated included pore structure, permeability and mechanical strength. The ash membrane filter shows great potential for the filtration and microfiltration of high-temperature gas-particulate streams, and re-uses waste fly ash composed of multiple oxides with a wide size distribution. The median pore size of the tested membrane was 2.3μm and the differential pressure gradient was 0.9 kPa l−1min−1, which is comparable to fabric filters currently in use in some New South Wales power stations. The high mechanical strength of the membrane was caused by fusion of the glassy material in the fly ash. Since the membrane consists of metal and ceramic composities, it also shows good flexibility. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
