Method for regulating and controlling temperature of furnace top through upper part and lower part of blast furnace under oxygen-enriched condition

Abstract

The invention relates to a method for regulating and controlling a temperature of a furnace top through the upper part and the lower part of a blast furnace under the oxygen-enriched condition. The method is characterized by comprising the following steps of step 1, real-time detection of the temperature of the furnace top: dividing the furnace top of the blast furnace into a plurality of regionswith an equal interval in a radial direction, and acquiring real-time data of the temperature of the furnace top in each region through a temperature detection device installed in each region; step 2,judgement analysis of the furnace condition; step 3, regulation with the upper part and the lower part of the blast furnace: according to judgement analysis on the real-time furnace condition, when the furnace temperature is abnormal, starting regulation; and step 4, real-time information feedback: judging a change of the temperature of the furnace top in each region in real time, entering the step 2, and forming a system of regulating the temperature of the furnace top in real time.

Description

technical field [0001] The invention relates to a control method, in particular to a method for controlling the temperature of a top of a blast furnace by adjusting the upper and lower parts of a blast furnace under oxygen-enriched conditions, and belongs to the technical field of oxygen-enriched injection in blast furnace ironmaking. Background technique [0002] Intensified smelting of blast furnaces is the main task of the development of ironmaking production in recent years. In order to achieve high quality, high yield, low consumption and long life of blast furnaces, intensive smelting must be carried out. On the one hand, the smelting intensity must be increased, and on the other hand, the coke ratio must be reduced. At present, technologies such as concentrated materials, high-pressure operation, high blast temperature, large injection, and oxygen-enriched blast are commonly used in the intensive smelting of blast furnaces at home and abroad, and various economic and t...

AI Technical Summary

Problems solved by technology

[0006] The present invention is aimed at the technical problems existing in the prior art, and provides a method for controlling the temperature of the top of the blast furnace through the adjustment of the upper and lower parts of the blast furnace under oxygen-enriched conditions. The time is long and the furnace condition is unstable. The present invention fully exerts the synergistic effect of the upper and lower adjustments, and provides a method for controlling the temperature of the top of the blast furnace through the adjustment of the upper and lower parts of the blast furnace under oxygen-enriched conditions.

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