purification installation of exhaust gas with a particle filter and an absorber for nitrogen oxides, and an implementation method of this installation

The invention relates to a purification of the exhaust gas system with a particle filter and an absorber for nitrogen oxides, and a method for implementation with a removal of nitrogen oxides operation, an operation of removing the sulfur absorber for nitrogen oxides, and a soot removal operation of the filter particules.Selon the invention, the absorber for nitrogen oxides is located upstream the particulate filter. For sulfur removal operation, one chooses a longer time than that for the removal of nitrogen oxides operation. At least a part of the operation for removing sulfur and soot removal operation are carried out as operations of combined regeneration, where the two refresh operations are performed directly one after the another or regeneration operation takes place intermittently over several intervals during regeneration.Utilisation another operation, for example for purifying automotive exhaust gas with a diesel engine.