MECHANISM AND TECHNICAL ANALYSIS OF CARBON MONOXIDE EMISSION REDUCTION IN SINTERING PEOCESS
As the environmental protection form of steel industry is severe and people's requirements for environmental quality are improved,sintering has become the most polluting process in Chinas iron and steel industry,which is dominated by long-process technology.In the face of urgent environmental control,there is a huge pressure to reduce emissions.After other sintering pollutants are effectively treated,the emission reduction of sintering flue gas CO has become the focus of sintering flue gas pollutant treatment.Based on the research and analysis of the mechanism of CO generation in sintering flue gas,combined with the existing sintering emission reduction technologies at home and abroad,this paper summarized and analyzed the source control,process control and end treatment of sintering production.The results show that the core element of source emission reduction is to reduce the fuel ratio,and to reduce the solid fuel ratio by injecting hydrogen-containing medium gas and increasing the thickness of sintering bed.The process control needs to consider the dynamic control factors that affect the combustion reaction of fuel to improve the combustion degree of fuel,and the conversion rate of CO to CO2 can be improved by steam injection,oxygen-enriched combustion and fuel particle size optimization.At the end of the treatment,it is necessary to explore the CO conversion and absorption technology suitable for sintering complex flue gas conditions,and to seek water-resistant,S-resistant and low-cost catalysts.
sintering flue gasCOcombustion mechanismemission reduction technologyenergy saving and consumption reduction
万方数据
维普
