A series of pulverized semi-coke combustion experiments were carried out to investigate the characteristics of fuel-N transformation and the effect of operating conditions in a circulating fluidized bed (CFB) and a down-fire combustor (DFC) on fuel-N transformation. The fuel-N transformation takes place in two stages: first, the fuel-N in pulverized semi-coke is partly converted to N2 and NH3
Low environmental impact. As for temperatures inside the furnace, while a regular boiler reaches 1,400-1,500°C, temperatures inside a CFB are in the low range of 800-900°C, thus inhibiting the generation of thermal nitrogen oxides (NOx whose production is dependent on combustion temperature).
After the boiler low-nitrogen transformation is completed, the emissions of nitrogen oxides and particulate matter have been significantly reduced, and the emission reduction effect is very obvious." On January 13, Li, Director of Engineering Department of Beichen Phoenix Sea Shopping Park Jian gave a detailed introduction to the reporter about the changes before and after the boiler renovation.
Boiler circulation systems: natural circulation and forced
Sep 01, 2020 · By adopting limestone desulphurization and low nitrogen combustion in furnace, selective non-catalytic reduction (SNCR) technology outside furnace and the integrated desulfurization and dust removal process of flue gas circulating fluidized bed (CFB-FGD), the unit realizes the technical route of ultra-low emission, and has good investment and operation economy, which can adapt to the …
Circulating fluidized bed(CFB) boiler working principle
Circulating Fluidized Bed (CFB) Boilers
Circulating fluidized bed(CFB) boiler working principle,How does the
Apr 01, 2021 · Low nitrogen retrofit plan for natural gas boilers Gas boiler flue gas NOx is produced due to the high temperature of gas combustion, which ensures that the center temperature of the furnace flame is lowered and the formation of NOx is suppressed under the condition that the combustion status of the furnace does not change much.
The larger problem of a power plant 1 000 MW boiler in the low nitrogen burner after the transformation of the load and unloading process in the main reheat steam temperature fluctuationsby optimizing the intermediate point of superheat and burner swing angleadjusting the main reheat steam temperature difference amplitudechanging fuel wind