Analysis of the influence of fuel types and burners characteristics on pulverised biomass combustion
2017
Repić, Branislav | Erić, Aleksandar | Grubor, Borislav | Dakić, Dragoljub | Živković, Goran
Pulverized fuel firing is one of the wide modes of fuel utilization. For successful combustion of pulverized fuel it is necessary to ensure adequate conditions by the appropriate choice of burners and furnace characteristics. Combustion of pulverized fuel with swirl burners utilizing the swirl effects is very significant and widely used. Swirl flows are used extensively because of their favourable influence on stabilization and intensification of the combustion process and reduction of NOx emission. Optimal operating conditions of pulverized fuel combustion depend on burner characteristics and fuel properties. In the paper are presented the results of investigation of influence that constructive and operating parameters of burner's characteristics and fuel properties exert on pulverized fuel combustion. Investigation of combustion of several types of fuels (biomass and coal) in swirl burner models and prototypes were performed. Influence of the following parameters was investigated: constructive parameters of burners (type, quarl), burner's operating parameters (velocity, temperature and quantity of air, swirl number, excess air, concentration of pulverized fuel), and fuel properties (type, quality, moisture, ash, volatile and combustible matters contents, pulverized fuel grinding fineness etc.).
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