| 摘要 |
<p>A quantity of air more important than that which is required for the combustion is heated by means of one or a plurality of heat exchangers by the combustion gas and the excess of hot air is added to the cooled and purified combustion gas. The device comprises at least one heat exchanger (1) provided on the combustion gas side before the desulphuration unit (5) and a line (12) supplying part of the air heated in the heat exchanger (1) to the purified combustion gas at a location (11) situated after the desulphuration unit (5). </p> |
