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Multi-boiler System Optimization in Integrated Steelworks Based on Decomposition and Coordination Method

Journal of Iron and Steel Research International 2015年第3期22卷 226-231页

作者： Guang-yu MA Wen-qiang SUN Wei-dong LI Zhu YE Jiu-ju CAI Institute of Thermal and Environmental Engineering Northeastern University Ansteel Research Institute of Iron and Steel Anshan Iron and Steel Group Corporation

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.

关键词： boiler self-owned power plant integrated steelworks decomposition and coordination method

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