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Mathematical Modeling of the Energy Consumption and Carbon Emission for the Oxygen Blast Furnace with Top Gas Recycling
Author(s) -
Jin Peng,
Jiang Zeyi,
Bao Cheng,
Lu Yuanxiang,
Zhang Jianliang,
Zhang Xinxin
Publication year - 2016
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201500054
Subject(s) - blast furnace , blast furnace gas , greenhouse gas , combustion , coke , waste management , carbon fibers , energy consumption , environmental science , process engineering , chemistry , materials science , metallurgy , engineering , electrical engineering , organic chemistry , composite number , composite material , ecology , biology
The ironmaking process is the most significant source of CO 2 emission in the iron and steel industry, which generates large quantities of greenhouse gases. Recently, oxygen blast and top gas recycling have been applied to the blast furnace to improve the energy efficiency and reduce the pollution from the ironmaking process. However, as a new ironmaking technology, the oxygen blast furnace with top gas recycling (TGR‐OBF) is still under development. This paper focuses on the investigation of the energy consumption and carbon emission for the TGR‐OBF process by modeling the stack, the bosh, the combustion zone, and the gas recycling system. Effects of the key parameters in the TGR‐OBF process on the carbon consumption of reactions and the energy consumption of the system are investigated by orthogonal experiments. Our results indicate that the TGR‐OBF process has the advantages of reducing energy consumption and CO 2 emission. The low temperature and high reducing environment in the new furnace is favorable to lower the coke gasification and increase the reaction rate of iron oxide. The recycling of the top gas can significantly reduce CO 2 emission, and the main advantage comes when the stripped CO 2 is stored.