Study of a nuclear energy supplied steelmaking system for near-term application

Conventional steelmaking processes involve intensive fossil fuel consumption and CO2 emission. The system resulting from this study ties a steelmaking plant to a nuclear plant. The latter supplies the former all energy and feedstock with the exception of iron ore. The actual design takes on a multi-disciplinary approach: The nuclear plant employs a proven next-generation technology of fission reactor with 950 °C outlet temperature to produce electricity and heat. The plant construction saving and high efficiency keep the cogeneration cost down. The steelmaking plant employs conventional furnaces but substitutes hydrogen and oxygen for hydrocarbons as reactant and fuel. Water decomposition through an experimentally-demonstrated thermochemical process manufactures the feedstock gases required. Through essential safety features, particular a fully-passive nuclear safety, the design achieves physical proximity and yet operational independence of the two plants to facilitate inter-plant energy transmission. Calculated energy and material balance of the integrated system yields slightly over 1000 t steel per 1 MWt yr nuclear thermal energy. The steel cost is estimated competitive. The CO2 emission amounts to 1% of conventional processes. The sustainable performance, economical potential, robust safety, and use of verified technological bases attract near-term deployment of this nuclear steelmaking system.

[1]  Kaoru Onuki,et al.  A demonstration study on a closed-cycle hydrogen production by the thermochemical water-splitting iodine–sulfur process , 2004 .

[2]  Suyuan Yu,et al.  HTGR PROJECTS IN CHINA , 2007 .

[3]  Gerardo Trapaga,et al.  Mathematical modeling of a direct current electric arc: Part I. Analysis of the characteristics of a direct current arc , 2004 .

[4]  Tatsuro Kuwabara.  Progress of RH Refining Process in Japan , 1987 .

[5]  Shin-ichi Kondo,et al.  Analysis of Operating Conditions of Shaft Furnace for Reduction of Iron-Ore Pellet by Using a Mathematical Model , 1976 .

[6]  M. V. Ramana,et al.  Licensing small modular reactors , 2013 .

[7]  Kazuhiko Kunitomi,et al.  Aerodynamic Design, Model Test, and CFD Analysis for a Multistage Axial Helium Compressor , 2008 .

[8]  Kazuya Kunitomo,et al.  Reduction of Fine Iron Ore with Circulating Fluidized Bed , 2001 .

[9]  R. J. Fruehan,et al.  Development of a Decarburization and Slag Formation Model for the Electric Arc Furnace , 2008 .

[10]  Ryutaro Hino,et al.  Development of Sulfuric Acid Decomposer for Thermochemical Hydrogen Production IS Process , 2006 .

[11]  Yoshikazu Takahashi,et al.  Reduction Rates of Iron Oxide Pellet with Hydrogen at High Pressures , 1980 .

[12]  Li Ji,et al.  Energy use and carbon dioxide emissions from steel production in China , 2002 .

[13]  Kaoru Onuki,et al.  Equilibrium potential across cation exchange membrane in HI–I2–H2O solution , 2010 .

[14]  H. Y. Sohn,et al.  Suspension Reduction Technology for Ironmaking With Low CO2 Emission and Energy Requirement , 2009 .

[15]  U. S. Doe.  A Technology Roadmap for Generation IV Nuclear Energy Systems , 2002 .

[16]  Shigeaki Nakagawa,et al.  Achievement of Reactor-Outlet Coolant Temperature of 950°C in HTTR , 2004 .

[17]  Kazuhiro Sawa,et al.  Investigation of Irradiation Behavior of SiC-Coated Fuel Particle at Extended Burnup , 2003 .

[18]  Yukitaka Kato,et al.  Carbon Recycling for Reduction of Carbon Dioxide Emission from Iron-making Process , 2010 .

[19]  Tetsuo Nishihara,et al.  Development of High Temperature Isolation Valve for the HTTR Hydrogen Production System , 2004 .

[20]  Minoru Mizuno,et al.  Design Study of Nuclear Steelmaking System , 1983 .

[21]  Kazuhiko Kunitomi,et al.  Nuclear and Thermal Design for High Temperature Gas Cooled Reactor (GTHTR300C) Using MOX Fuel , 2007 .

[22]  國富 一彦,et al.  403. 高温ガス炉ガスタービン発電システム(GTHTR300)の磁気軸受支持ロータダイナミクス試験計画 , 2003 .

[23]  Guglielmo Lomonaco,et al.  HTGR reactor physics and fuel cycle studies , 2006 .

[24]  Kazuhiko Kunitomi,et al.  Overview of HTTR design features , 2004 .

[25]  Shunzo Fujiki.  On Application of Nuclear Energy to Iron Making Process , 1971 .

[26]  D. Ablitzer,et al.  Modelling a DR shaft operated with pure hydrogen using a physical-chemical and CFD approach , 2009, 0911.4949.

[27]  Kazuhiko Kunitomi,et al.  Safety Assessment of VHTR Hydrogen Production System against Fire, Explosion and Acute Toxicity , 2008 .

[28]  C. Brayner,et al.  Efficiency of the sulfur–iodine thermochemical water splitting process for hydrogen production based on ADS (accelerator driven system) , 2013 .

[29]  Ryutaro Hino,et al.  Nuclear hydrogen production handbook , 2011 .

[30]  一彦 國富,et al.  電力水素併産型高温ガス炉(GTHTR300C)の安全設計方針 , 2006 .

[31]  Isao Minatsuki,et al.  Cost and performance design approach for GTHTR300 power conversion system , 2003 .

[32]  K. Bergman,et al.  Twin cathode DC EAF concepts and results at Hylsa Mexico , 2001 .

[33]  Kazuhiko Kunitomi,et al.  JAEA'S VHTR FOR HYDROGEN AND ELECTRICITY COGENERATION : GTHTR300C , 2007 .

[34]  Kaoru Onuki,et al.  Effect of Sulfur Dioxide Partial Pressure and Reaction Temperature on the Product Composition of the Bunsen Reaction , 2010 .

[35]  Ernst Worrell,et al.  Energy efficiency and carbon dioxide emissions reduction opportunities in the US iron and steel sector , 2001 .