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| Multi-boiler System Optimization in Integrated Steelworks Based on Decomposition and Coordination Method |
| Guang-yu MA1,2,Wen-qiang SUN1,Wei-dong LI2,Zhu YE1,Jiu-ju CAI1 |
1. Institute of Thermal and Environmental Engineering, Northeastern University, Shenyang 110819, Liaoning,China
2. Ansteel Research Institute of Iron and Steel, Anshan Iron and Steel Group Corporation, Anshan 114009, Liaoning, China |
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Abstract As for the existing problems of boilers in integrated steelworks, the multi-boiler system could be quantitatively optimized with the decomposition and coordination method. Then, case studies were carried out based on the data of an integrated steelworks. Two groups of actual production records were contrastively analyzed, and the calculation results from the optimized program of these two groups indicated that for groups 1 and 2, the costs fall by 5.06% and 3.79% and the fuel consumptions decrease by 2.72% and 1.45%, respectively, compared with the actual data. To analyze the cost and fuel consumption change under the same condition of total load demand, assigned fuel consumption and water temperature, five sets of data were selected for further analysis. It was shown that the total cost and fuel consumption of the optimized program could fall by 3.5% and 1.6% respectively, compared with the actual production records. The optimal allocation significantly contributed to energy conservation and cost reduction. The effects of the system energy conservation cannot be realized by single equipment energy conservation. They were complementary to each other, and should be put on the same stage.
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Received: 23 July 2013
Published: 06 March 2015
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| Fund:Project guided by science and technology in Inner Mongolia Autonomous Region |
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Corresponding Authors:
Wen-qiang SUN
E-mail: neu20031542@163.com
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2015, Vol. 22 
