Method and apparatus for post-combustion of sewage sludge ash produced in sewage sludge single-incineration plant

摘要

The sewage sludge single-incineration process is a sewage sludge ash in a sewage sludge single-incineration plant - the sewage sludge ash still contains a sufficiently low amount of unburned carbon powder, at maximum, so that the obtained sewage sludge ash can be easily used for phosphorus extraction - It is intended to provide a solution that allows The solution is to treat sewage sludge ash produced in a sewage sludge single-incineration process in a rotary kiln 3 using a hot gas or flue gas stream, having a low oxygen content, in particular an oxygen content of 6 to 10% by volume oxygen. Post-combustion method - wherein the sewage sludge ash exiting the rotary kiln 3 is discharged from the combustion incineration chamber 11 of the incinerator 2a associated with the rotary kiln 3 or associated with the rotary kiln 3 . A gas or flue gas stream is removed from the power plant and, if necessary, conditioned to the low oxygen content required for post-combustion, this sufficiently hot gas or flue gas stream may be used to oxidize or Post-combustion is achieved by