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Computer modularized control technology for oxygen consumption in electric arc furnace

A computer module, modular control technology, applied in the field of steelmaking, to reduce electrode consumption and smelting power consumption, and improve metal yield

Inactive Publication Date: 2002-12-18
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: through the electric arc furnace computer control technology, solve the problem of oxygen balance injection in the electric arc furnace, improve the metal yield, reduce electrode consumption, and reduce smelting power consumption

Method used

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  • Computer modularized control technology for oxygen consumption in electric arc furnace
  • Computer modularized control technology for oxygen consumption in electric arc furnace
  • Computer modularized control technology for oxygen consumption in electric arc furnace

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Embodiment Construction

[0025] A computerized modular control technology for electric arc furnaces. According to the characteristics of oxygen use in each position of the electric arc furnace, various oxygen use methods are divided into modules for modular control. The modules include a total oxygen module, an oxygen combustion boosting module, and a furnace door Oxygen blowing module, electric furnace eccentric furnace bottom--EBT oxygen blowing module, secondary combustion module, cluster oxygen lance module and carbon injection module; control the supply of oxygen or other media in the production process by adjusting the flow and pressure of oxygen or other media ; In the control method, PID control in the negative feedback control method is adopted. figure 1 It is the configuration diagram of the computer module control system of the electric arc furnace.

[0026] The total oxygen module control is to set the oxygen pressure of the oxygen main pipe according to the production needs. When the tota...

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Abstract

The present invention relates to a computer modular control technique for oxygen consumption of electric arc furnace. It is characterized by that various oxygen consumption modes are divided into several modules: total oxygen module, oxygen combustion fluxing module, furnace door oxygen-blowing module, electric furnace ecentric furnace-bottom-EBT oxygen-blowing module, secondary combustion module, bunched ouxygen gun module and carbon-jetting module. Said invention utilzies the regulation of flow rate and pressure of oxygen gas and other medium, controls their supply method, adopts PID control and combines it with computer time-sharing control technique of oxygen consumption to reduce oxygen consumption by 10-20%, raise metal yield rate by 1-2%, reduce electrode consumption by 0.3-0.5 kg / t and reduce electric consumption by 35-50 k wt / t.

Description

Technical field: [0001] The invention belongs to the field of steelmaking, and is particularly suitable for the oxygen and fuel control of electric arc furnace steelmaking. Background technique: [0002] At present, the electric arc furnace using the oxygen injection technology generally controls the injection of oxygen into the electric arc furnace manually, and the amount of oxygen injection has not undergone strict chemical balance and material balance calculations. The actual use effect is that the oxygen consumption is too large, the CO content in the furnace gas is high, the electrode and the conductive cross arm are severely oxidized, and the metal yield is low. Invention content: [0003] The technical problem to be solved by the present invention is: through the computer control technology of the electric arc furnace, the problem of balanced oxygen injection in the electric arc furnace is solved, the metal yield is improved, the electrode consumption is reduced, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B3/28G05B17/00
Inventor 朱荣李桂海王勤朴刘艳敏王广连仇永全刘钦学刘广会李晓强
Owner UNIV OF SCI & TECH BEIJING
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