Blast Furnace Burden Optimization Method and System Based on Pattern Recognition and Expert System

Abstract

The invention relates to blast furnace process control, in particular to a blast furnace burden distribution optimization method based on mode recognition and an expert system as well as a corresponding system. The method comprises the following steps: firstly, establishing a condition case base: establishing the mode recognition of air distribution state in a blast furnace, the mode recognition of furnace profile variation state and the mode recognition of furnace condition state of the blast furnace, secondly, establishing a burden distribution case base: establishing a burden distribution case base, thirdly, establishing a burden distribution mode optimization matching base; selecting one burden distribution matrix with matched conditions, fourthly, judging whether the burden distribution matrix is reasonable for current furnace condition burden distribution measures, utilizing the burden distribution matrix if the burden distribution matrix is reasonable, or adjusting the burden distribution matrix till the burden distribution matrix is reasonable, and fifthly, ensuring that a communication industrial computer transmits the matrix to a furnace top PLC (Programmable Logic Controller) and a PLC below a groove, and ensuring that the two PLCs carry out burden distribution control, so as to accomplish blast furnace burden distribution. The method and the system reduce the fuel ratio of the blast furnace, and greatly improve the production efficiency and the productivity of the blast furnace.

Description

technical field [0001] The invention belongs to the technical field of blast furnace process control, and relates to a process control for guiding and optimizing a large-scale blast furnace with a relatively complete computer system, in particular to a blast furnace material distribution optimization method and system based on pattern recognition and an expert system. Background technique [0002] The blast furnace is a multi-variable, large-lag, nonlinear high-temperature chemical reactor with a huge volume (3000-5800m 3 ), this is a giant, the inside of the blast furnace is filled with high-temperature, high-pressure CO-rich gas, and the amount of gas generated by the blast furnace per minute is as high as 7000-10000m 3 / min, because there are many factors affecting the blast furnace, once the operation of the blast furnace is abnormal, it often causes huge losses to production. In the prior art, the blast furnace material distribution is controlled. [0003] Blast furnac...

AI Technical Summary

Problems solved by technology

[0007] The existing technology has problems such as low learning and maintenance ability of the rule base of the blast furnace operation expert system, simplification of the operation guidance and explanation mechanism, and poor integration performance, which limits the speed and quality of the development of the material distribution control expert system, and restricts the blast furnace production efficiency and capacity.

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