Nature protection technologies

1.1.2.2.4. Concentric combustion

Part 1. AIR PROTECTION FROM POWER INDUSTRY EMISSIONS

1.1. Nitrogen oxide emission reduction

1.1.2. Technological methods for reduction of nitrogen oxide formation in boilers at combustion of different types of organic fuel

1.1.2.2. Modernization of the furnace process

1.1.2.2.4. Concentric combustion

Kotler V.R., Open JSC “VTI”

This method also intends creation in the furnace of a zone with a lack of oxidizer, in which nitrogen-containing components don’t convert into NO, but into the molecular nitrogen. In this zone partial conversion of the formed NO into N2 is possible. Reducing zone in this diagram is provided by a change of construction of direct-flow burners, already mentioned in it. 1.1.2.2.1.