Fuel · 2021 · 49 citations · 45 references
EngineeringChemical EngineeringMechanical EngineeringCombustionComputational Fluid DynamicsReaction EngineeringBoiler SystemsCatalytic Reaction EngineeringCombustion AnalysisCombustion FundamentalsCombustion KineticsCombustion ProcessesBoiler CombustionBoiler OperationCfd SimulationDetailed Reaction MechanismsEmission ReductionEmissions ReductionNox Formation MechanismsSelective Non-catalytic Reduction
In this paper, a numerical study of flow, reactions and NOx emissions from a biomass boiler is presented. Detailed reaction mechanisms for the decomposition of tar species, combustion of hydrocarbons and formation of NOx are employed by adopting appropriate reaction sets from literature. The proposed mechanism is used to perform CFD simulations of a laboratory-scale biomass boiler, and temperature and species concentrations are compared with the experimental data. NOx formation and emissions are studied in detail and the contribution of different pathways for NOx formation are identified. Furthermore, the CFD model is used to study the application of Selective Non-Catalytic Reduction (SNCR) method in this boiler. The effects of height and flow rate of ammonia injection on the performance of SNCR method are studied. It is observed that the SNCR, can reduce up to 63% of NOx emissions.
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Modeling nitrogen chemistry in combustion
Peter Glarborg, James A. Miller, Branko Ruščić et al. · Progress in Energy and Combustion Science · 2018 · 1.9K citations · Full text