Regeneration of particle filters comprises burning fuel under oxygen deficiency in first combustion chamber, and introducing gas produced to second chamber where air current is produced flowing in direction counter to direction of gas flow

摘要

Regeneration comprises burning fuel (17) under oxygen deficient conditions in a first combustion chamber (2). The gas (45) leaves the first combustion chamber and enters a second in one direction. An air current (40) is produced in the second combustion chamber in a direction towards the outlet (37) for the hot gas from the second combustion chamber. This second direction runs counter to first direction.