Process and an arrangement for reducing nox emissions

Details Process and an arrangement for reducing nox emissions Process and an arrangement for reducing nox emissions

B - Operations, Transporting

01

D

B01D 53/34 (2006.01) B01D 53/56 (2006.01) B01D 53/74 (2006.01) B01J 19/24 (2006.01)

Patent

CA 2069218

The invention relates to a process for reducing NO x emission in the thermal reaction (combustion) of nitrogen- containing fuels or in the reduction of waste gases or vapors containing nitrogen oxides by a multistage reaction in which, in a first stage, all the nitrogen oxides present or spontaneously formed are reduced in a substoichiometric fuel-to-oxygen ratio and, in a following second stage or in following further stages, are after-reacted until all the oxidizable reaction components have been completely reac- ted. To accelerate the reaction, the reactants are addi- tionally activated in at least one of the reaction stages by activation regenerators which statically mix the reac- tants with one another and contribute towards the equaliza- tion of heat flow. A furnace internally comprising a regenerator wall with throughflow openings is provided for carrying out the process.

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