| 摘要 |
<p>A method and a system for operating a flue gas cleaning process, for cleaning high temperature flue gases in a filter, such as a ceramic filter, susceptible to damages at temperatures exceeding a characteristic Tmax for said filter. A flow of high temperature flue gases to be cleaned is, according to the invention, divided into a first and second flow of flue gases, the temperature of the second flow of flue gases is decreased whereafter the first and second flow of flue gases are recombined. The thus recombined flow of flue gases is led into the filter. The temperature of the second flow of flue gases is preferably decreased by passing the second flow over heat exchange surfaces. The ratio first flow to second flow of flue gases may be controlled by controlling the first or second flow of flue gases. The invention also relates to a power generation system and a pressurized fluidized bed combustion system utilizing the above system.</p> |
