Blast furnace cooling system transformation method

A cooling system and blast furnace technology, which is applied in the field of iron-making blast furnace cooling, can solve the problems of small heat load, fluctuating water supply in the cooling system, and inability to adjust the cooling intensity, and achieves the effect of improving the overall service life and being convenient and quick.

Active Publication Date: 2016-08-10
鞍钢集团工程技术有限公司
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Problems solved by technology

In the currently used tandem blast furnace cooling system, if a certain section of cooling equipment suddenly leaks, it will cause large fluctuations in the water supply of the entire cooling system; In the actual situation where the heat load in the above areas is large and the fluctuations are large, the current cooling system adopts a unified cooling method, and it is impossible to adjust the cooling intensity locally

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  • Blast furnace cooling system transformation method
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Embodiment Construction

[0018] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0019] Such as figure 1 As shown, a blast furnace cooling system modification method according to the present invention, the original blast furnace cooling system is composed of a water pump station, a degassing tank and a water supply and drainage pipe network, and the inner wall of the blast furnace shell is installed with multiple cooling walls along the circumference and height of the blast furnace 3. Among them, the cooling stave 3 installed along the blast furnace height is divided into furnace bottom, furnace hearth, bosh, furnace waist and furnace body cooling stave; each cooling stave 3 is provided with at least one cooling water flow channel 13, and the cooling water flow channel 13 is two The ends are respectively connected to the water supply branch pipe 9 and the drainage branch pipe 10 (such as figure 2 Shown); the cooling water pa...

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Abstract

The invention relates to a blast furnace cooling system transformation method. The method comprises the following steps: 1) a blast furnace lower section cooling system is designed; 2) a furnace cylinder and a furnace bottom cooling wall water supply/drainage pipe network are connected to form the blast furnace lower section cooling system; 3) a furnace bosh, a furnace waist and a furnace body cooling wall water supply/drainage pipe network are connected to form a blast furnace upper section cooling system; and 4) an upper section water supply/drainage main pipe of the blast furnace upper section cooling system is connected with a lower section water supply/drainage main pipe of the blast furnace lower section cooling system; and when one cooling system is broken down to be incapable of satisfying the use requirements, the other cooling system replenishes cooling water into the system or replaces to finish the cooling operation. The method can finish transformation of a blast furnace cooling system under the condition of not influencing normal production of a blast furnace, realizes segmented cooling below the furnace cylinder and above the furnace bosh, satisfies actual requirements of adjusting the cooling water quantity at different parts and controlling the thermal load at all the parts in the operation of the blast furnace, guarantees continuous production of the blast furnace, and prolongs the whole service life of the blast furnace.

Description

technical field [0001] The invention relates to the technical field of ironmaking blast furnace cooling, in particular to a method for transforming a blast furnace cooling system. Background technique [0002] Compared with other ironmaking methods, blast furnace ironmaking has incomparable advantages such as large output, high productivity and low cost, so the blast furnace ironmaking process is generally used in ironmaking at present. It is obvious that only by prolonging the life of the blast furnace can the purpose of saving costs and increasing productivity be achieved. Practice has proved that the longevity of the blast furnace must be grasped from the design. The existing conventional blast furnace cooling design generally adopts the "constant flow" cooling method, that is, the amount of cooling water obtained by each cooling element in each part of the blast furnace is equal, and the furnace body cooling system of this type of blast furnace usually uses a string to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/10
CPCC21B7/10
Inventor 张维巍赵波李霞刘晓青张帅
Owner 鞍钢集团工程技术有限公司
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