| abstract |
The invention relates to a process and a system for the dry cleaning of waste gases containing pollutants of a combustion process by means of granular alkaline absorbents that absorb the pollutants of the waste gas. The invention also relates to a process and a system for feeding air to a combustion process and for the dry cleaning of waste gases containing pollutants of the combustion process by means of granular alkaline absorbents that absorb the pollutants of the waste gas. The direction of flow of the waste gases passed through the system is repeatedly changed, wherein in a first direction of flow the waste gases flow through first a first absorption region I, then a heating region and finally a second absorption region II, and, after switching over, the waste gases flow through first a second absorption region II, then the heating region (23) and finally a first absorption region I. |