Automatic control system for changing combustion rhythm of hot blast furnace along with blast temperature of high furnace

A hot blast stove and blast temperature technology, which is applied to blast furnace details, blast furnaces, blast furnace parts, etc., can solve problems such as automatic combustion of hot blast stoves, dynamic control of hot blast stove combustion rhythm, etc.

Inactive Publication Date: 2013-01-23
BEIJING SHOUGANG AUTOMATION INFORMATION TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The system needs to solve two problems, 1. The problem of automatic combustion of the hot blast stove; 2. The problem of dynamic control of the combustion rhythm of the hot blast stove

Method used

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  • Automatic control system for changing combustion rhythm of hot blast furnace along with blast temperature of high furnace
  • Automatic control system for changing combustion rhythm of hot blast furnace along with blast temperature of high furnace
  • Automatic control system for changing combustion rhythm of hot blast furnace along with blast temperature of high furnace

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Embodiment Construction

[0043] The present invention proposes a control system for changing the combustion rhythm of a hot blast stove based on the operation change of the blast furnace air temperature, which applies an expert system and fuzzy control theory. The detailed description is as follows in conjunction with drawings and examples:

[0044] The main parameters of the blast furnace hot blast stove selected in this embodiment are:

[0045] Blast furnace volume: 5500m 3

[0046] Number of hot blast stove: 4

[0047] Combustion system: two burns and two free

[0048] Hot blast stove type: top combustion type

[0049] Fuel type: blast furnace gas

[0050] Burning cycle: 120 min

[0051] The highest value of exhaust gas temperature: 450℃

[0052] The system can be divided into two stages: the determination stage of the optimal combustion parameters before combustion and the control stage of the normal combustion process. The flow chart of the overall control is as figure 1 Shown.

[0053] (1) Blast furnace air ...

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Abstract

The invention relates to an automatic control system for changing the combustion rhythm of a hot blast furnace along with the blast temperature of a high furnace, belonging to the technical field of automatic control on a hot blast furnace of a high furnace. The automatic control system is composed of an air/coal gas regulating valve, a PLC (programmable logic controller), an industrial control computer and intelligent control software, wherein the air/coal gas regulating valve is used for controlling the flow of air or coal gas; the PLC is used for collecting pressure and flow information of coal gas and air, realizing logic linkage and protection and simultaneously outputting a given valve position to control the action of the regulating valve; the industrial control computer is used as a hardware carrier of the intelligent control software, and is used for acquiring coal gas pressure, air pressure, coal gas flow, air flow, coal gas regulating valve signals and air regulating valve signals from the PLC, calculating the appropriate valve position through the intelligent control software and transmitting the valve position to the PLC; and the intelligent control software is the core of the automatic control system, and is used for realizing the automatic control on the combustion process in the situation that the external conditions are changed. The automatic control system has the advantage that the problems on the automatic combustion of a hot blast furnace and the dynamic control on the combustion rhythm of the hot blast furnace are solved.

Description

Technical field [0001] The invention belongs to the technical field of automatic control of blast furnace hot blast stoves, and particularly relates to an automatic control system for changing the combustion rhythm of the hot blast stove based on the operation change of blast furnace air temperature. Background technique [0002] The hot blast furnace is an important part of the blast furnace smelting system, and it undertakes the important task of providing hot blast to the blast furnace. Due to the complexity of the combustion process and the limitations of process equipment, automatic combustion of hot blast stoves has always been a research focus. Especially after the mathematical model and artificial intelligence theory have been widely used, the automatic combustion of hot blast stoves has successively appeared a fuzzy control system based on the optimal air-fuel ratio, a combustion control system based on an expert system, a self-organizing fuzzy control system based on re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B9/00C21B5/00
Inventor 周检平张贺顺王晓朋任立军王洪庚苏殿昌霍吉祥陈军王有良张铁志甄昆泰黄俊杰刘原
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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