A method for dismantling and replacing the Y-type downcomer of a blast furnace

A replacement method and blast furnace technology, which is applied in the direction of dust collector, energy efficiency improvement, process efficiency improvement, etc., can solve the problems of difficulty in hoisting when the Y-shaped downcomer of blast furnace is removed and replaced, so as to reduce the difficulty of hoisting and improve work efficiency. The effect of reducing security risks

Active Publication Date: 2022-07-08
SHANGHAI BAOYE CONSTR INDAL FURNACE ENG TECH +1
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Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for removing and replacing the Y-shaped downcomer of a blast furnace, which has the advantage of being able to solve the problem of difficult hoisting when removing and replacing the Y-shaped downcomer of a blast furnace

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  • A method for dismantling and replacing the Y-type downcomer of a blast furnace
  • A method for dismantling and replacing the Y-type downcomer of a blast furnace
  • A method for dismantling and replacing the Y-type downcomer of a blast furnace

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Embodiment Construction

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The blast furnace downcomer is the main part of the blast furnace ironmaking crude gas system, 1000m 3 The following blast furnace descending pipes usually use Y-shaped descending pipes 1, and the interior of the Y-shaped descending pipes 1 is provided with internal refractory materials. The forked end of the Y-shaped descending pipe 1 is connected to the blast furnace 3, and the end of the Y-shaped descending pipe 1 away from the blast furnace 3 is connected to the gravity dust collector 2, which is used for dedusting and purifying the crude gas produced by the blast furnace 3 during ironmaking. .

[0032] refer to Figure 2 to Figure 4 , which is a method for dismantling and replacing a Y-shaped descending pipe of a blast furnace disclosed in the present invention, comprising a Y-shaped descending pipe 1, a first hoisting device and a second hoisting...

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Abstract

The invention relates to a method for dismantling and replacing a Y-shaped descending pipe of a blast furnace. The Y-shaped descending pipe comprises a first disassembling part, a second disassembling part and a third disassembling part, the first disassembling part and the second disassembling part are arranged oppositely, and the first disassembling part One end of the disassembly part and one end of the second disassembly part are respectively connected with the third disassembly part; the disassembly and replacement process is as follows: both the first hoisting equipment and the second hoisting equipment are connected with the Y-shaped descending pipe-remove the first disassembly part-remove the second disassembly Part-removal of the third disassembly part-installation of a new Y-shaped descending pipe; thus, by dismantling the Y-shaped descending pipe in sections, the internal refractory material is avoided to be chiseled, the work efficiency is improved, and the hoisting difficulty is reduced; at the same time, the first The hoisting equipment and the second hoisting equipment are hoisted at the same time, which improves the stability of the Y-shaped descending pipe during the dismantling process; the overall installation process of the Y-shaped descending pipe is adopted to reduce the number of aerial butt welding and safety risks.

Description

technical field [0001] The invention relates to the technical field of dismantling and replacing a Y-shaped descending pipe of a blast furnace, in particular to a method for dismantling and replacing a Y-shaped descending pipe of a blast furnace. Background technique [0002] At present, the blast furnace downcomer is the main part of the blast furnace ironmaking crude gas system. The function of the blast furnace downcomer is to dedust and purify the crude gas generated during the blast furnace ironmaking process through a gravity dust collector. The removal and replacement of the blast furnace downcomer is the focus of the blast furnace overhaul project. ,difficulty. [0003] 1000m 3 The following blast furnace descending pipes usually use Y-shaped descending pipes, which are inclined and arranged at an inclination angle of more than 40°, and internal refractory materials are added inside the Y-shaped descending pipes. [0004] However, the weight of the blast furnace Y-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/22
CPCC21B7/22Y02W30/50
Inventor 郭元奎程子东王兵团吴运恒
Owner SHANGHAI BAOYE CONSTR INDAL FURNACE ENG TECH
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