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Blast furnace hot-blast stove combustion automatic control method based on example inference

A case-based reasoning, hot blast stove technology, applied in combustion methods, blast furnaces, controlled combustion, etc., can solve problems such as low automatic adjustment efficiency

Inactive Publication Date: 2005-10-05
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

It can be said that this fuzzy control method is only a simple imitation of manual operation, and there is a process of exploration and trial for the adjustment of air-fuel ratio, so the efficiency of automatic adjustment is not high

Method used

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  • Blast furnace hot-blast stove combustion automatic control method based on example inference
  • Blast furnace hot-blast stove combustion automatic control method based on example inference
  • Blast furnace hot-blast stove combustion automatic control method based on example inference

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Embodiment Construction

[0033] The example-based reasoning that the present invention proposes is based on the blast furnace hot-blast stove combustion automatic control method and is described in detail as follows in conjunction with accompanying drawing and embodiment:

[0034]The automatic combustion control of blast furnace hot blast stove proposed by the present invention is based on a kind of example reasoning method combined with rule reasoning. The following takes a specific blast furnace hot blast stove as an example to describe the process of its automatic combustion control. The selected ones in this embodiment The main parameters of blast furnace hot blast stove are: blast furnace volume 230M 3 , equipped with 3 hot blast stoves, adopting the combustion system of 2 combustion and 1 delivery; the hot blast stove is top-fired, all the fuel used is blast furnace gas, the combustion time is 110 minutes, and the upper limit of the exhaust gas temperature at the end of combustion is 450 °C.

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Abstract

This invention relates to blast furnace air-stove automatic control method based on example reasoning. At first assure the best skip area of air-stove, and prescribe a technique parameter contained in the example and relating to the burning procedure, and then extract several successful adjusting examples to be the basic examples of the database during the line-functioning phase; according the real time technique parameter during the functioning procedure, calculate the speed or variable amount of the temperature raising of the arch, if it is lower than the rising speed value or more than the allowable falling range, adjust the air burning ratio combining with the example reasoning method to speed up the temperature rising and restrain the arch temperature falling; this invention does not depend on the mathematic model of furnace air-stove, does not detect the residue amount, and confirm the output of controlling decision according to example reasoning to realize the automatic control of the furnace air-stove.

Description

technical field [0001] The invention belongs to the technical field of automatic combustion control of blast furnace hot blast stoves, and in particular relates to an intelligent control method for ironmaking blast furnace hot blast stove combustion based on case reasoning. Background technique [0002] The blast furnace hot blast stove is an important equipment in the blast furnace ironmaking production, and it undertakes the key role of transferring the heat generated by burning gas to the blast furnace blast. In the production process of blast furnace ironmaking, the combustion control of the blast furnace hot blast stove is a very important part. It not only ensures that the outlet hot blast temperature of the blast furnace hot blast stove reaches the value required by the process, but also ensures the full combustion of the gas and the effective heat. use. [0003] The existing automatic control methods of blast furnace hot blast stove combustion mainly fall into two c...

Claims

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Application Information

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IPC IPC(8): C21B9/00F23N1/00
CPCY02P10/20
Inventor 孙进生吴建华刘利平许小强侯国强
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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