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A method for controlling the temperature of the top of the blast furnace by adjusting the upper and lower parts of the blast furnace under oxygen-enriched conditions

A furnace top temperature and furnace control technology, applied in the field of control, can solve the problems of long reaction time of furnace conditions, unstable furnace conditions, insufficient system, etc., and achieve the effects of improving reaction dynamism, optimizing furnace conditions, and avoiding abnormal furnace conditions.

Active Publication Date: 2020-09-22
SHANGHAI MEISHAN IRON & STEEL CO LTD
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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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  • A method for controlling the temperature of the top of the blast furnace by adjusting the upper and lower parts of the blast furnace under oxygen-enriched conditions

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Embodiment 1

[0023] Example 1: see figure 1 , a method for controlling the furnace top temperature by adjusting the upper and lower parts of a blast furnace under oxygen-enriched conditions, the method comprising the following steps:

[0024] Step 1. Real-time detection of furnace top temperature;

[0025] Divide the top of the blast furnace into several equidistant areas in the radial direction, and obtain the real-time data of the top temperature of each area through the temperature detection device installed in each area;

[0026] Step 2. Judgment and analysis of furnace condition;

[0027] Step 3, the upper and lower parts of the blast furnace are adjusted;

[0028] According to the judgment and analysis of the real-time furnace condition, when the furnace temperature is abnormal, start the adjustment;

[0029] Step 4. Real-time information feedback;

[0030] The change of the furnace top temperature in the above-mentioned area is judged in real time, and the second step is entered...

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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 furnace top temperature 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 for blast furnace ironmaking. Background technique [0002] Intensified blast furnace smelting is the main task for the development of ironmaking production in recent years. In order to achieve high quality, high output, low consumption and longevity, blast furnaces must carry out enhanced smelting. On the one hand, the smelting intensity must be increased, and on the other hand, the coke ratio must be reduced. At present, blast furnace strengthening smelting at home and abroad generally adopts technologies such as concentrate, high pressure operation, high air temperature, large injection, oxygen-enriched blast, etc., and realizes the improvement of various economic and technical indicato...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/00
CPCC21B5/006
Inventor 杨文光张宏岳鑫先
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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