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Method for determining coal injection quantity of blast furnace during operation process

A technology of operation process and coal injection volume, applied in blast furnaces, blast furnace details, furnaces, etc., can solve problems such as too strong subjective factors and poor practicability, and achieve the effect of avoiding subjectivity and reducing the difficulty of decision-making

Inactive Publication Date: 2016-07-06
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor practicability and too strong subjective factors are the defects of the current on-site coal injection quantity decision-making process

Method used

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  • Method for determining coal injection quantity of blast furnace during operation process
  • Method for determining coal injection quantity of blast furnace during operation process
  • Method for determining coal injection quantity of blast furnace during operation process

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings:

[0022] Support vector regression uses a nonlinear mapping to map the sample data set into a high-dimensional feature space, then constructs a fitting function, and solves a quadratic convex programming problem according to the principle of minimizing structural risk, and finds the optimal solution. Finally, the optimal fitting function is obtained. A data model is established through support vector regression, and based on historical data analysis, the optimal coal injection decision-making amount at the current moment is given.

[0023] The method of the invention is to use the sensor data information collected on site to establish a statistical model to make real-time decisions on the amount of coal injection during the operation of the blast furnace; read the historical data of the blast furnace operation, and process the abnormal points of the historical data; His...

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Abstract

The invention provides a method for determining the coal injection quantity of a blast furnace during the operation process. The method comprises the steps that data are read, and exceptional historical data points are processed; modeling is carried out on the processed data by a support vector regression method; optimal parameter values of an established model are determined by a cross validation method; effect evaluation is carried out on the model with selected parameters, and training of the model is ended if it is thought that a modeling error is within a corresponding threshold value; and the trained model is run actually on site, and the coal injection quantity at the moment is determined. By means of the scheme provided by the embodiment of the invention, the defect that a manual decision is subjective in the blast furnace coal injection process can be overcome, and the real-time coal injection quantity of the blast furnace is determined more accurately.

Description

technical field [0001] The invention relates to the field of blast furnace smelting automation control, in particular to a method for real-time decision-making of the amount of coal injection during the operation of blast furnace ironmaking. Background technique [0002] Blast furnace ironmaking is the process of reducing iron ore with coke. Blast furnace pulverized coal injection is the core means to replace coke and reduce smelting cost in blast furnace smelting process. At the same time, the injection of pulverized coal provides conditions for increasing the air temperature and oxygen-enriched injection. The pulverized coal is injected and burned in front of the tuyere to provide heat for the hearth, which is one of the means of adjusting the lower part of the blast furnace. In the blast furnace smelting process, coke is the main reducing charge, which is smelted from bituminous coal. Injecting pulverized coal into the blast furnace can supplement carbon, thereby saving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00
CPCC21B5/003C21B5/006
Inventor 华长春胡海洋李军朋李祥龙赵彦兵关新平
Owner YANSHAN UNIV