| abstract |
The invention discloses a biomass low-nitrogen combustion boiler with enhanced air intake by swirl flow. The boiler is provided with a tertiary air inlet, a primary flow air inlet is located under the grate, and a secondary swirling air inlet and a secondary swirling air inlet are respectively arranged on the rear arch and the front arch. The tertiary swirl air inlet and the secondary swirl air duct are provided with baffles to control the airflow direction and axial swirl blades to adjust the swirl intensity. The invention delays the mixing of air and fuel through the action of the secondary swirling air and the third swirling air, reduces the temperature of the main combustion zone and the exhaust gas temperature, thereby suppressing the generation of thermal NOx and fuel NOx, and has the advantages of simple structure, easy operation Convenience and NOx emission reduction features. |