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Optimization method of blending rate of coal for coking based on modified differential evolution algorithm

An evolutionary algorithm and improved differential technology, applied in coking ovens, calculations, special data processing applications, etc., can solve problems such as small-scale optimization problems, and achieve the effects of accelerating convergence speed, improving search efficiency, and improving solution quality

Active Publication Date: 2015-06-10
SHANXI TAIGANG STAINLESS STEEL CO LTD
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Problems solved by technology

However, traditional optimization methods require the objective function and constraints to be continuous and differentiable, and are prone to fall into local optimal solutions, and the scale of the optimization problem to be solved is relatively small.

Method used

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  • Optimization method of blending rate of coal for coking based on modified differential evolution algorithm
  • Optimization method of blending rate of coal for coking based on modified differential evolution algorithm
  • Optimization method of blending rate of coal for coking based on modified differential evolution algorithm

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Embodiment Construction

[0028] There are four types of coal in the coking plant: fat coal, coking coal, lean coal and 1 / 3 coking coal. Among them, the available fat coals are: Malan, Zhenchengdi, Xinzhi, and Guangyuan. The coal blending ratios are expressed as: x 1 , x 2 , x 3 , x 4 , the prices (yuan / ton) are: 1324.79, 1324.77, 1305.28, 1249.54 respectively; available coking coals include: Tunlan, Huajin, Liukuang, and medium ash, and their coal blending ratios are expressed as: x 5 , x 6 , x 7 , x 8 , and their prices (yuan / ton) are: 1408.45, 1384.24, 1291.34, 1240.25; available lean coals are: Dongqu, Wuyang, and their coal blending ratios are expressed as: x 9 , x 10 , the prices (yuan / ton) are: 1064.66, 1082.31 respectively; available 1 / 3 coking coal is: Zhaocheng, and its coal blending ratio is expressed as: x 11 , the price (yuan / ton) is 1147.3, then the coal blending cost can be expressed as: (c i Indicates the cost of a single type of coal) (1)

[0029] The sum of the single coal ...

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Abstract

The invention relates to the field of coal blending, particularly to an optimization method of a blending rate of coal for coking based on the modified differential evolution algorithm. The optimization method is combined with the requirements of the technology of coal blending for coking, an optimization model of a coal blending ratio, which uses the mass of blended coal and the mass of coke as constraint conditions and uses coal blending cost as an objective function, is established according to the non-linear relationship between single coal and blending coal, and between blending coal and coke, and the mass index of each single coal. The optimization method further provides a modified differential evolution algorithm so as to perform optimization solution on the model. The optimization method disclosed by the invention is reliable and stable, is high in calculating precision, and is fast in convergence. Through the adoption of the optimization method, the problem that the accuracy of the blending rate confirmed by manual work in the prior art during coal blending for coking is not high is effectively solved, so that when the demands of users for the mass of coke are guaranteed, the coal blending cost is reduced to the maximum extent.

Description

technical field [0001] The invention relates to the field of coal blending, in particular to a coking coal blending ratio optimization method based on an improved differential evolution algorithm. Background technique [0002] In the production of iron and steel industry, with the enlargement of blast furnace and the development of injection technology, the requirements for the quality of blast furnace coke are becoming more and more stringent. The quality of coke is directly related to the smooth operation of blast furnace and the quality of its products. However, there are many types of raw materials used in coking, the quality is uneven, and the inventory size is different, and the quality data of the coke corresponding to the coal entering the furnace can only be obtained after a few days, which obviously lags behind. The composition of the coal blending ratio is very unfavorable for ensuring stable coke quality; in addition, relying on the experience of coal blending ex...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00C10B57/04
Inventor 赵小彦马灵锦李小龙吴波任建中
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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