Design of Biomass Layer Combustion Boiler with Low Nitrogen and Energy Saving and Its Thermal Performance
In order to improve the energy-saving and environmental protection level of biomass layer combustion boilers,a structural design with a large arc furnace arch and large furnace volume is proposed based on the high volatile chemical characteristics of biomass briquetted fuel.At the same time,the precise zoning control technology is used to control the combustion in the preheating zone,main combustion zone,and burnout zone.The thermal performance test is conducted on the boiler designed and developed.The test results show that the mass concentration of NOx benchmark emission is controlled to 89.27 mg/m3.Compared with the traditional biomass combustion boilers with low nitrogen,the NOx emission concentration is reduced by 20％.The thermal efficiency of boiler based on the effluent temperature conversion and fuel correction is 86.69％,and the energy-saving thermal efficiency index of the boiler reaches the secondary energy efficiency level specified by national standard.
biomasslayer combustion boilerlow nitrogenenergy-savingprecise zoning control technologythermal performance
NETL
NSTL
万方数据
