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Received July 18, 2002
Accepted September 24, 2002
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Plant-wide Optimal Byproduct Gas Distribution and Holder Level Control in the Iron and Steel Making Process
Department of Chemical Engineering, Pohang University of Science and Technology, San 31 Hyoja, Pohang, Kyungbuk 790-784, Korea 1School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31 Hyoja, Pohang, Kyungbuk 790-784, Korea
chan@postech.ac.kr
Korean Journal of Chemical Engineering, May 2003, 20(3), 429-435(7), 10.1007/BF02705542
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Abstract
A new plant-wide multiperiod optimization approach is proposed for optimal byproduct gas distribution to prevent unfavorable byproduct gas emission and equipment trip and simultaneously to maximize the efficiency of energy resource usage in the iron and steel making process. Compared with the previous approach, the proposed approach finds the optimal trade off among conflicting objectives such as holder level control, minimization of oil consumption and number of burner switching, and the maximization of generating electricity. To consider the different fuel load change operation according to the fuel types, both integer and continuous variables are used. Case studies were performed to verify the usefulness of the proposed approach, and the results show good performance in terms of the reduced number of burner switching which leads to the reduction of total cost and producing operation-easy solutions.
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References
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Fukuda K, Makino H, Suzuki Y, Ishida S, "Optimal Energy Distribution Control at the Steel Works," IFAC Simulation of Control Systems, Vienna, Austria, 337 (1986)
Hui CW, Natori Y, Comput. Chem. Eng., 20(S), 1577 (1996)
Iyer RR, Grossman IE, Comput. Chem. Eng., 21(8), 787 (1997)
Iyer RR, Grossmann IE, Comput. Chem. Eng., 22(7-8), 979 (1998)
Kim JH, Nan CH, Ind. Eng. Chem. Res., 40(8), 1928 (2001)
Lee HK, Kim SB, Lee ES, Lee IB, Korean J. Chem. Eng., 18(4), 422 (2001)
Singh A, Forbes JF, Vermeer PJ, Woo SS, J. Process Control, 10(1), 43 (2000)
Sinha GP, Chandrasekaran BS, Mitter N, Dutta G, Singh SB, Choudhury AR, Roy PN, Interfaces, 25, 6 (1995)
Yi HS, Han C, Korean J. Chem. Eng., 18(4), 442 (2001)
