Method for integrally dismounting and installing furnace top system of blast furnace

Abstract

The invention relates to the maintenance field of iron smelting equipment and in particular relates to a method for integrally dismounting and installing a furnace top system of a blast furnace, comprising the steps of integral connection and reinforcement as well as integral dismounting and installation. The method is characterized in that a support frame (2) is erected on the ground at one sideof the blast furnace, a sliding girder (3) is fixed on the support frame (2), a sliding vehicle (4) is erected on the sliding girder (3), the top of the support frame (2) is provided with a hoist (5), a transportation vehicle (6) is placed on the ground beside the hoist (5), and then the furnace top system (1) of the blast furnace is slided to the hoist (5) by the sliding vehicle (4), descended to the ground by the hoist (5) and then slided and fixedly placed on the transportation vehicle (6) beside the hoist (5) by the sliding vehicle (4). The method can be used for rapidly dismounting or installing the furnace top system of the blast furnace to reduce the workload of on-line construction, and has the advantages of high safety and high construction efficiency.

Description

technical field [0001] The invention relates to the maintenance field of iron smelting equipment, in particular to an overall disassembly and installation method for a blast furnace top system (1). Background technique [0002] Blast furnace is the most widely used iron smelting equipment, large blast furnace especially 4000m 3 The above blast furnaces have a total weight of several thousand tons, and the roof system on the top is as high as more than 100 meters. When it needs to be dismantled or installed during overhaul or new construction, due to the high height and heavy weight, the construction is very difficult. What the prior art adopts is the conventional method of dismantling and installing parts by parts, and the parts are disassembled or assembled sequentially on the top of the furnace. There are many difficulties and risks in this method: 1. The online engineering volume is large: the demolition and installation engineering volume of the furnace top system is mo...

AI Technical Summary

Problems solved by technology

There are many difficulties and risks in this method: 1. The online engineering volume is large: the demolition and installation engineering volume of the furnace top system is more than 6000t

2. High-altitude operation, high risk, low efficiency: the furnace roof replacement position is in the range of +46.300m ~ +115.000m, with many uncertain factors and many potential safety hazards

3. There are many construction disciplines and cross operations: the disassembly and assembly of the furnace roof involves multiple disciplines such as steel structure, piping, equipment, electrical, and refractory materials.

4. Long construction period: Due to the large amount of work, low efficiency of high-altitude operations, and the large mutual influence of cross-operations, the construction period for disassembling and assembling the furnace roof is long, at least 8 months.

5. The construction plane is limited, and logistics organization is difficult: the dismantled large components need to be placed on the ground for disintegration, and the new furnace top components need to be assembled on site in advance, which has a great impact on the overhaul plane site and difficult logistics and transportation coordination

Therefore, the traditional decomposition method cannot meet the short-term construction period and safety needs of large-scale blast furnaces, and has become the biggest bottleneck for smelting enterprises to increase production capacity and increase profits

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