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Automatic intelligent double cross limiting range combustion control method for heating furnace

A heating furnace and double-cross technology, applied in the field of heating furnace combustion control, can solve the problems such as temperature control response time and control accuracy that cannot be changed, and achieve the effects of solving control accuracy problems, stabilizing furnace pressure, and reducing oxidation burning loss

Active Publication Date: 2013-06-19
BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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  • Abstract
  • Description
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Problems solved by technology

It can achieve a stable rise or fall of temperature control, effectively using energy, but it cannot change the response time and control accuracy of temperature control

Method used

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  • Automatic intelligent double cross limiting range combustion control method for heating furnace
  • Automatic intelligent double cross limiting range combustion control method for heating furnace
  • Automatic intelligent double cross limiting range combustion control method for heating furnace

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Embodiment Construction

[0046] A set of automatic control method applied to the combustion process of heating furnace proposed by the present invention adopts a double-crossing limit control method combining air-fuel ratio self-correction, temperature self-learning, PI parameter self-learning and fuzzy control. The following is a specific The heating furnace is the whole process of automatic combustion control for the embodiment in detail. The heating furnace selected in this embodiment is a 2160 heat exchange, stepping, and mixed gas heating type heating furnace. The furnace uses high coke mixed gas as fuel, its normal calorific value: 9630kj / m3, and the reference ratio is 2.33:1 (air volume: gas volume). The heating furnace is divided into 6 heating sections, that is, the upper heating section, the lower heating section, the upper heating section, the lower heating section, the upper soaking section and the lower soaking section. The structural block diagram of the entire control method is as foll...

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Abstract

The invention discloses an automatic intelligent double cross limiting range combustion control method for a heating furnace, and belongs to the technical field of heating furnace combustion control. By combining temperature self-learning, fuzzy control and PI parameter self-learning, the intelligent double cross limiting range control in the combustion process of the heating furnace is realized,the problem of control accuracy of the combustion of the heating furnace is effectively solved, and a hot rolling production requirement is well met. The method has the advantages that: gas and air flow rates are reasonably, accurately and quickly regulated and controlled, the regulating function of a regulating valve is effectively realized, and the temperature of a hearth of the heating furnaceis reasonably and accurately controlled.

Description

technical field [0001] The invention belongs to the technical field of heating furnace combustion control, and in particular relates to an intelligent double-crossing limiting combustion automatic control method for a heating furnace, which is based on a combination of self-learning and fuzzy control for fully automatic control of heating furnace combustion. Background technique [0002] The heating furnace is an important part of the production control system of the rolling line, and it undertakes the important task of providing the billet with a suitable temperature for the rolling mill. Due to the complexity and hysteresis of the combustion process of the heating furnace and the limitations of the process equipment, the automatic control of the heating furnace has been in a state of low precision at present. The temperature control of the billet has been fluctuating greatly, the proportion of iron scale is relatively large, and it is easy to cause air pollution. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23N1/02
Inventor 王艳凯彭卫革刘志民郑州
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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