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METHOD AND BURNER FOR STAGED COMBUSTION AND DEVICE PROVIDED WITH ONE OR MORE BURNERS OF THIS TYPE
METHOD AND BURNER FOR STAGED COMBUSTION AND DEVICE PROVIDED WITH ONE OR MORE BURNERS OF THIS TYPE
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机译:一种或多种这种燃烧器的分级燃烧和装置的方法和燃烧器
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摘要
With a method and burner (10) for staged combustion of a fuel in gaseous form, three distinct streams of, respectively, a premixed mixture of fuel and combustion air, pure combustion air and pure fuel are introduced into a combustion space (16) at different radial positions (70; 80; 90), viewed from the axis of the burner. As a result thereof, several combustion zones (O; C; D) and mixing zones (A; B; C) can be distinguished in the combustion space (16). The combustion conditions in these zones are such that in each case such a substoichiometric amount of either fuel or oxygen is present locally or such a dilution of the combustion gases with flue gases is present that combustion takes place at low temperature and thus the emission of harmful nitrogen oxides is limited.
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