Study on Oxygen-Enriched Combustion Characteristics and Operation Optimization of Blast Furnace Gas Boiler
In order to effectively improve the heat efficiency of blast furnace gas boiler,tak-ing the 496 t/h blast furnace gas boiler of a steel enterprise as the research object,EBSILON numerical simulation software was used to simulate the blast furnace gas boiler system under different working conditions and different oxygen enrichment conditions.The results show that when the oxygen volumetric concentration is 35％ ,the thermal efficiency of the boiler under three working conditions is increased by 1.39％ ,1.24％ and 1.24％ ,respectively,compared with that of ordinary air combustion.The adiabatic combustion temperature was increased by 174 K,175 K and 177 K respectively.The best operation scheme of the fan under three working conditions is obtained,and the annual electricity cost saved by the fan under three working conditions are 10,257,446 yuan,6,876,715 yuan and 3,265,479 yuan respectively.The annual fuel saving costs were 12,187,350 yuan,9,716,490 yuan and 7,579,530 yuan respectively,which has a good economy.The annual carbon dioxide emis-sions can be reduced by 1.0 164 × 107 m 3,8.106 × 106 m and 6.321 × 106 m3 respectively,which has a good emission reduction effect.The implementation of oxygen-enriched combus-tion technology is conducive to reducing the emission of NOx and reducing the cost of denitri-fication.
blast furnace gas boileroxygen-enriched combustioneconomy
万方数据
维普
