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Blast furnace cooling wall damage rapid leakage detection method

A technology for cooling walls and blast furnaces, applied to cooling devices and other directions, can solve the problems of long time-consuming leak detection, large amount of water, inconsistent leak detection methods, etc., and achieve the effect of improving operation rate, reducing production cost and ensuring safe production.

Inactive Publication Date: 2020-08-28
XINJIANG BAYI IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Bayi Iron and Steel Co., Ltd. has the following main problems in the leak detection technology for blast furnace stave damage: (1) The damage of blast furnace stave is not easy to detect, the leak detection takes a long time, and the amount of water leaking into the furnace is large
(2) The judgment and leak detection methods for blast furnace stave damage are not uniform

Method used

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Examples

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Effect test

Embodiment Construction

[0006] The present invention is further described in conjunction with embodiment.

[0007] 1) Judgment of the relationship between the liquid level of the expansion tank and the N2 pressure in the expansion tank:

[0008] (1) When the soft water closed circulation cooling system of the blast furnace is normal, the liquid level change of the expansion tank is consistent with the N2 pressure change in the expansion tank. (2) The soft water closed cycle cooling system of the blast furnace is abnormal. When the pipeline of the soft water system outside the furnace body leaks, or the stave wall and water pipes in the soft water system inside the furnace body are damaged, and water leaks into the furnace, the liquid level of the expansion tank is not stable. Hold, continue to drop, after the liquid level is normal, continue to drop. The N2 pressure in the expansion tank also fluctuates regularly with the liquid level of the expansion tank: when the liquid level drops, the N2 pressu...

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Abstract

The invention discloses a blast furnace cooling wall damage rapid leakage detection method. The method comprises the following steps that when a soft water system pipeline outside a furnace body leakswater, or a cooling wall body and a water pipe in a soft water system inside the furnace body are damaged and leak water into the furnace, the liquid level of an expansion tank cannot be stabilized and continuously drops, and when a blast furnace soft water closed circulating cooling system, the water quality index of the soft water in the period of time is detected, wherein the PH value index change trend decreases progressively; and when the cooling wall is damaged, coal gas can be detected in a degassing tank and the expansion tank of the soft water closed circulation cooling system, underthe normal production state of a blast furnace, the working condition of a flap flowmeter mounted on each soft water return pipeline of the cooling wall is observed, when water flows in cooling wallwater return pipe flap flowmeter has obvious bubble and white turbidity phenomena, it shows that the cooling wall water pipeline is abnormal, and longitudinal series connection cooling wall comprisingcooling water pipeline may be damaged.

Description

technical field [0001] The invention relates to a method for rapid leak detection of blast furnace cooling wall damage. Background technique [0002] The cooling stave is an important cooling equipment in blast furnace production. It works under high temperature and harsh conditions, and it is easy to cause cracking and water leakage due to high temperature alternating thermal stress. In order to avoid losses or even accidents caused by a large amount of water entering the blast furnace, it is necessary to quickly judge and detect the damage of the cooling wall for timely and proper treatment to ensure the safety and normal production of the blast furnace. At present, Bayi Iron and Steel Co., Ltd. has the following main problems in leak detection technology for blast furnace stave damage: (1) It is not easy to monitor and find the blast furnace stave damage, the leak detection takes a long time, and a large amount of water leaks into the furnace. (2) The methods for judging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/10
CPCC21B7/103
Inventor 周文胜郭庆华汤新彦
Owner XINJIANG BAYI IRON & STEEL
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