Study on ultra-low emission technology of biomass grate furnace
The current pollutant emission control measures for biomass grate furnaces were summarized,the advantages and disadvanta-ges of each measure were analyzed,and the control concept of"standard first,comprehensive treatment"was put forward.Based on the reaction mechanism,the original emission was controlled from the perspective of combustion adjustment.Optimize the transformation to achieve removal capacity,dynamic control to achieve the ultimate goal,and reduce the transformation and operation costs as much as possible on the basis of achieving desulphurization and denitrification standards.Through practical project application,the results showed that biomass grate furnace can finally achieve ultra-low emission operation of desulfurization and denitration through combustion optimization,logic optimization,denitration system transformation,and desulfurization system transformation,that was SO2≤35 mg/m3,NOx ≤50 mg/m3.At the same time,this method can effectively reduce the original emission and improve the boiler efficiency.After the optimization of combustion control logic,the original generation of NOx was reduced by about 50～70 mg/m3,and the original generation of SO2 was reduced by about 5～10 mg/m3.The CO content in the furnace was reduced from 8 000～11 000 mg/m3 to 1 000～4 000 mg/m3.
万方数据
维普
