2025 - Sustainable Industrial Processing Summit
SIPS2025 Volume 11. Intl. Symp on Iron and Steel, Non-ferrous, Metals, Bioextraction, Molten and Recycling

Editors:F. Kongoli, P. Assis, R. Alvarenga, J.A. de Castro, B. Deo, W.F. Santos Jr., S.L. de Andrade, GS. Mahobia, T. Usui, J. Antrekowitsch, A. Charitos, C. Oosterhof, M. Stelter, Z. Wang, A. Dmitriev, M.C. Gomez Marroquin, Y. Gordon, M. Naimanbayev, S. Prakash, V. Tsepelev
Publisher:Flogen Star OUTREACH
Publication Year:2025
Pages:298 pages
ISBN:978-1-998384-58-7 (CD)
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
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    FUNDAMENTAL STUDIES ON SELECTIVE REMOVAL METHODS OF HYDROGEN FROM GAS CARBURIZATION FURNACE OF SOLID STEEL AND COKE OVEN GAS IN IRON- AND STEEL-MAKING PLANT

    Tateo Usui1; Tomoyuki Mizukoshi2; Yujiro Yokoyama3; Hideaki Hoshino3; Itsuo Ishigami4; Hirokazu Konishi5;
    1OSAKA UNIVERSITY, Ibaraki, Japan; 2SEIBU METAL HEAT TREATMENT INDUSTRY COOPERATIVE ASSOCIATION, Osaka, Japan; 3IZUMI CENTER, OSAKA RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY, Izumi, Japan; 4OSAKA PREFECRURE FEDERATION OF SMALL BUSINESS ASSOCIATIONS, Osaka, Japan; 5NATIONAL INSTITUTE OF TECHNOLOGY (KOSEN), SUZUKA COLLEGE, Suzuka, Japan;
    Type of Paper: Plenary
    Id Paper: 229
    Topic: 2

    Abstract:

    Gas carburizing of solid steel is carried out by using a large amount of hydrocarbon in order to keep the furnace atmosphere as long as constant, because carbon from hydrocarbon is consumed for carburization of the steel surface and hydrogen remains in the furnace. In the present study, selective removal methods of H2 were surveyed and fundamental experiment was done by using Proton Conductor SrZr1-xYxO3-a , which was prepared by spark plasma sintering method; hydrogen gas was separated from wet simulated coke oven gas atmosphere at high temperature successfully. At the same time, reported method to selectively remove H2 was also applied to bench scale furnace for gas carburizing of solid steel by using gas filter module made of poli-imido fiber tube. The control of the furnace atmosphere was very important to keep it constant, which was also studied numerically as well as experimentally. Finally, selective removal of H2 from the furnace was verified experimentally and the flow rate of so-called “carrier gas” (hydrocarbons) could be reduced more than 75 % under the conditions of the same quality of steel surface by the carburization treatment. As a result, exhaust gas volume could also be reduced and the burnt exhaust gas, namely, CO2 emission was minimized.

    Keywords:

    CO2; Carbon; Coke; Combustion; Furnace; Gas; Hydrogen; Industry; Measurement; Process; Steel; Sustainability; Technology; Temperature; CN

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    Usui T, Mizukoshi T, Yokoyama Y, Hoshino H, Ishigami I, Konishi H. (2024). FUNDAMENTAL STUDIES ON SELECTIVE REMOVAL METHODS OF HYDROGEN FROM GAS CARBURIZATION FURNACE OF SOLID STEEL AND COKE OVEN GAS IN IRON- AND STEEL-MAKING PLANT. In F. Kongoli, P. Assis, R. Alvarenga, J.A. de Castro, B. Deo, W.F. Santos Jr., S.L. de Andrade, GS. Mahobia, T. Usui, J. Antrekowitsch, A. Charitos, C. Oosterhof, M. Stelter, Z. Wang, A. Dmitriev, M.C. Gomez Marroquin, Y. Gordon, M. Naimanbayev, S. Prakash, V. Tsepelev (Eds.), Sustainable Industrial Processing Summit Volume 11 Intl. Symp on Iron and Steel, Non-ferrous, Metals, Bioextraction, Molten and Recycling (pp. 121-130). Montreal, Canada: FLOGEN Star Outreach