METHOD AND DEVICE FOR REHEATING DESULPHURATED COMBUSTION GAS

摘要

Method for reheating desulphurated combustion gas from a combustion process during which an air amount larger than that which is required for the combustion is heated by means of one or a plurality of heat exchangers by the combustion gas before adding the hot air in excess to the cooled and purified combustion gas. The device for implementing such method comprises at least one heat exchanger (1) arranged on the combustion gas side before the desulphuration unit (5) and a conduit (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).