Method for the catalytic removal of carbon dioxide and sulphur dioxide from exhaust gases

1. Method for the catalytic removal of sulphur dioxide and carbon dioxide from waste gases in a reactor charged with an activated carbon catalyst, characterised by the following steps:

saturating the activated carbon with SO 2 ,

saturating or partially saturating the waste gases with water,

introducing the exhaust gases into the reactor,

catalytically converting the SO 2 into H 2 SO 4 and, in parallel with this, catalytically converting CO 2 into C and O 2 and into sulphur-carbon compounds on the same catalyst,

washing out the catalyst and discharging the H 2 SO 4 as a liquid and the C as a solid or/and bound to sulphur compounds.

2. Method according to claim 1 , characterised in that the ratio of SO 2 and CO 2 in the waste gases is between 0.25 and 0.58 mol/mol.

3. Method according to claim 1 , characterised in that the inlet temperature of the waste gases lies between the ambient temperature and 150° C.

4. Method according to claim 1 , characterised in that the O 2 content of the waste gases is at least 5% by volume.

5. The method according to claim 1 , characterised in that the O 2 content is more than 8 times greater than the SO 2 content.

6. Method according to claim 1 , characterised in that the waste gases are saturated with water by quenching.

7. Method according to claim 1 , characterised in that softened or demineralised water is used to wash out the catalyst.

8. Method according to claim 1 , characterised in that the catalyst is washed out in co-current flow with or in counterflow to the waste gases.

9. Method according to claim 1 , characterised in that the SO 2 purifying factor of the catalyst is between 0.4 and 0.6.