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Fig. 5 Combustion emission and technical emission of each process
which the combustion emission of sintering, ironmaking, and boiler power generation are the most, and this is the reason for the relatively large amount of CO 2
emissions in these three processes. Apparently, ironmaking process has the most
technical emission, which are 3.5 times as much as the combustion emission of this
process. This is the reason why ironmaking process has the most CO 2 emissions.
According to the date from Fig. 5, the combustion emission ratio is 54.12%, which
indicates that the enterprise should pay primary attention to the optimization of the
energy consumption system to reduce the CO 2 emissions. The technical emission
ratio is 45.88%, and most of which are from ironmaking process.
Analysis of Carbon Emissions from EAF Process
EAF steelmaking is the trend of development of iron and steel enterprises. The
CO 2 emission intensity of the electric furnace steelmaking process of the enterprise
is 12.75 kg/t, which is far lower than the 60.84 kg/t of its converter steelmaking
process.
The electricity used in the case enterprise is purchased electricity, self-powered
electricity and waste heat and energy power generation. Waste heat and energy power