Current situation and development prospects of metallurgical by-product gas utilization in China's steel industry |
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| Affiliation: | 1. State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing, Beijing, 100083, PR China;2. Chongqing Materials Research Institute Co., LTD, Chongqing, 400700, PR China;1. Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, 300, Taiwan;2. Department of Materials Science and Engineering, Feng Chia University, Taichung, 407, Taiwan;1. Khristianovich Institute of Theoretical and Applied Mechanics of SB RAS, 630090, Novosibirsk-90, Institutskaya Str. 4/1, Russian Federation;2. Voevodsky Institute of Chemical Kinetics and Combustion of SB RAS, 630090, Novosibirsk-90, Institutskaya Str. 3, Russian Federation;3. Novosibirsk State University, Novosibirsk-90, Pirogov Str. 2, 630090, Russian Federation;1. Department of Chemical Engineering, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka-shi, Fukuoka, 819-0395, Japan;2. Department of Materials and Life Science, Faculty of Science and Technology, Seikei University, 3-3-1 Kichijoji-kitamachi, Musashino-shi, Tokyo, 180-8633, Japan;3. Research Center for Synchrotron Light Applications, Kyushu University, 6-1 Kasuga-koen, Kasuga-shi, Fukuoka, 816-8580, Japan;1. Department of Chemical Engineering Materials Environment, SAPIENZA University of Rome, Via Eudossiana 18, 00184, Rome, Italy;2. Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province-College of Ecology & Environment, Hainan University, 570228, Haikou, China |
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| Abstract: | China's annual metallurgical by-product gas production exceeds 1400 billion Nm3, the calorific equivalent of ∼266 million tonnes of coal. The widely-studied blast furnace gas used in hydrogen-enriched carbonic oxide recycling oxygenate furnaces ensures carbon-reduction. Converter gas contains abundant heat resources, equivalent to ∼6.5 million tonnes of coal. Using high-temperature by-product gas online reforming methods to convert thermal energy into chemical energy and combining it with power generation and other industries imparts physical heat recovery exceeding 60%. China's annual coke oven gas (COG) production could support more than 100 million tonnes of direct reduced iron production, thus reducing CO2 emissions by more than 150 million tonnes (nearly 10% of China's steel industry CO2 emissions). We summarise the characteristics, availability, and steel-chemical co-production utilisation of three by-product gases, and discuss the application of COG in direct reduced iron production and development of metallurgical by-product gas utilisation for carbon reduction in China. |
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| Keywords: | Metallurgical by-product gas Steel-chemical co-production Direct reduced iron production Hydrogen metallurgy Carbon emission reduction BF" },{" #name" :" keyword" ," $" :{" id" :" kwrd0040" }," $$" :[{" #name" :" text" ," _" :" blast furnace BF-BOF" },{" #name" :" keyword" ," $" :{" id" :" kwrd0050" }," $$" :[{" #name" :" text" ," _" :" blast furnace-basic oxygen furnace BFG" },{" #name" :" keyword" ," $" :{" id" :" kwrd0060" }," $$" :[{" #name" :" text" ," _" :" blast furnace gas CCPP" },{" #name" :" keyword" ," $" :{" id" :" kwrd0070" }," $$" :[{" #name" :" text" ," _" :" gas–steam combined cycle power plants CCS" },{" #name" :" keyword" ," $" :{" id" :" kwrd0080" }," $$" :[{" #name" :" text" ," _" :" carbon capture and storage CCU" },{" #name" :" keyword" ," $" :{" id" :" kwrd0090" }," $$" :[{" #name" :" text" ," _" :" carbon capture and utilisation COG" },{" #name" :" keyword" ," $" :{" id" :" kwrd0100" }," $$" :[{" #name" :" text" ," _" :" coke oven gas DRI" },{" #name" :" keyword" ," $" :{" id" :" kwrd0110" }," $$" :[{" #name" :" text" ," _" :" direct reduced iron DRM" },{" #name" :" keyword" ," $" :{" id" :" kwrd0120" }," $$" :[{" #name" :" text" ," $$" :[{" #name" :" __text__" ," _" :" CH" },{" #name" :" inf" ," $" :{" loc" :" post" }," _" :" 4" },{" #name" :" __text__" ," _" :" dry reforming HyCROF" },{" #name" :" keyword" ," $" :{" id" :" kwrd0130" }," $$" :[{" #name" :" text" ," _" :" hydrogen-enriched carbonic oxide recycling oxygenate furnace LCA" },{" #name" :" keyword" ," $" :{" id" :" kwrd0140" }," $$" :[{" #name" :" text" ," _" :" Life Cycle Assessment LDG" },{" #name" :" keyword" ," $" :{" id" :" kwrd0150" }," $$" :[{" #name" :" text" ," _" :" converter gas NG" },{" #name" :" keyword" ," $" :{" id" :" kwrd0160" }," $$" :[{" #name" :" text" ," _" :" natural gas PSA" },{" #name" :" keyword" ," $" :{" id" :" kwrd0170" }," $$" :[{" #name" :" text" ," _" :" pressure swing adsorption STG" },{" #name" :" keyword" ," $" :{" id" :" kwrd0180" }," $$" :[{" #name" :" text" ," _" :" steam turbine generator TRT" },{" #name" :" keyword" ," $" :{" id" :" kwrd0190" }," $$" :[{" #name" :" text" ," _" :" Blast Furnace Top Gas Recovery Turbine Unit TSA" },{" #name" :" keyword" ," $" :{" id" :" kwrd0200" }," $$" :[{" #name" :" text" ," _" :" temperature swing adsorption TCE" },{" #name" :" keyword" ," $" :{" id" :" kwrd0210" }," $$" :[{" #name" :" text" ," _" :" tonne of standard coal equivalent TCS" },{" #name" :" keyword" ," $" :{" id" :" kwrd0220" }," $$" :[{" #name" :" text" ," _" :" tonne of crude steel VSA" },{" #name" :" keyword" ," $" :{" id" :" kwrd0230" }," $$" :[{" #name" :" text" ," _" :" vacuum swing adsorption |
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