| 摘要 |
PCT No. PCT/EP91/01548 Sec. 371 Date Apr. 16, 1992 Sec. 102(e) Date Apr. 16, 1992 PCT Filed Aug. 14, 1991 PCT Pub. No. WO92/03211 PCT Pub. Date Mar. 5, 1992.Combustion waste gases of coal dust comprising SO2 and fly ash are completely and dry desulphurized by very quickly heating up the fly ash to a high temperature which, however, is below the sintering temperature of the fly ash, and cooling the combustion waste gases to a temperature, the distance of which to the water dew point is relatively small and is below 25 DEG C. Thereby, SO2 is bound into the ash, so that the combustion waste gases become free of SO2. (FIG. |
