A method for controlling the atmosphere field of a heating furnace

A heating furnace and atmosphere technology, which is applied in the field of heating furnace atmosphere field regulation, heating furnace combustion detection and optimization control, can solve problems such as model training, achieve operation optimization, reduce temperature measurement errors, and prevent uneven product quality and finished products rate effect

Active Publication Date: 2011-12-28
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0009] The invention provides a method for controlling the atmosphere field of a heating furnace, which solves the problem that the existing combustion monitoring in the furnace relies on an empirical model. The problem with model retraining

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  • A method for controlling the atmosphere field of a heating furnace
  • A method for controlling the atmosphere field of a heating furnace
  • A method for controlling the atmosphere field of a heating furnace

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] An embodiment of the invention includes:

[0046] (1) Layout steps of testing equipment:

[0047]In a 1580 four-stage industrial heating furnace in a certain company, the preheating section, the first heating section, the second heating section, and the soaking section are all equipped with flame probes, and each section is equipped with 2 flame probes. Each flame probe is composed of Composed of a CCD camera and an optical lens barrel, each flame probe is connected to a video splitter, and the video splitter synthesizes 8 images taken by 8 flame probes into a flame image and outputs it to the computer;

[0048] The actual internal size of the monitored heating furnace is (length×width×height): 32810mm×11700mm×2200mm, and 8 flame detectors detect all grid areas. The pixels of each flame detector are set to 30×30, and the total pixels of 8 flame...

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Abstract

The invention discloses a method for regulating and controlling an air-flowing environment of a heating furnace, which belongs to the field of combustion monitoring and controlling, is applicable to detection and optimal control over combustion of a heating furnace and solves the problems that a mode is needed to be retrained when actual operation work conditions are deviated from preset conditions of the model or when parameters for supporting model operation are detected to be abnormal because an empirical mode is applied in the internal combustion monitoring of the traditional furnace. Themethod comprises the steps of equipment arrangement detection, image number processing and control. According to the method disclosed by the invention, a radioactive energy signal is extracted from flame image in different arranged sections of the heating furnace and is combined with air-flowing environments in the different sections for detecting and calculating reasonable air/combustion ratio, thus the oxidation and burn of steel and furnace tubes caused by the improper air-flowing environments in the heating furnace are reduced and the irregularity of quality of products in different batches is prevented. According to the method, proper air-flowing environments in the furnace can be created, temperature measuring errors are reduced and operation optimization, energy saving and emissionreduction of the heating furnace are realized.

Description

technical field [0001] The invention belongs to the field of combustion monitoring and control, in particular to a method for controlling the atmosphere field of a heating furnace, which is suitable for combustion detection and optimization control of the heating furnace. Background technique [0002] The energy consumption of the billet heating furnace in my country's steel industry accounts for more than half of the energy consumption of the entire steel rolling. Whether the heating furnace operates economically is directly related to the production cost of the enterprise. At present, the problems of low thermal efficiency in the online production of steel rolling heating furnace mainly include: large heat loss of heating furnace, low combustion control accuracy, fuel supply and air-fuel ratio are not in the best state, resulting in insufficient furnace temperature and billet discharge temperature. Higher requirements for process settings not only increase energy consumpti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23N1/02
Inventor 罗自学周怀春
Owner HUAZHONG UNIV OF SCI & TECH
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