Anti-explosion white-reducing device and method for blast furnace granulation tower

Abstract

The invention discloses an anti-explosion white-reducing device and method for a blast furnace granulation tower, and belongs to the technical field of blast furnace granulation tower explosion prevention and slag flushing water dead steam white-eliminating in the iron and steel industry. The device aims to solve the problem of the abnormal deslagging state, prevent explosion hidden danger caused by instant increase of internal pressure of the granulation tower, reduce the content of water vapor discharged by dead steam, and achieve the white reducing effect. The device comprises the granulation tower 3, a dead steam discharge pipeline 6, a dead steam discharge pipeline outlet 8 and a dead steam discharge pipeline fixing frame 9. The upper part of the granulation tower 3 is connected with the dead steam discharge pipeline 6, the dead steam discharge pipeline 6 is led to the furnace top of a blast furnace 1 along a casting house canopy 7, the dead steam discharge pipeline outlet 8 is connected with the other end of the dead steam discharge pipeline 6, and the dead steam discharge pipeline 6 is fixedly connected with a structural framework of the furnace top of the blast furnace 1 through the dead steam discharge pipeline fixing frame 9. The anti-explosion white-reducing device and method have the advantages that explosion of the granulation tower is prevented, smooth high-altitude discharge of dead steam is guaranteed, it is ensured that slag flushing dead steam is prevented from overflowing through an accident pressure relief opening in the top, and heat is dissipated along the way through the dead steam discharge pipeline.

Description

technical field [0001] The invention belongs to the technical field of blast furnace granulation tower explosion protection and slag flushing water exhaustion whitening elimination technology in the iron and steel industry, and in particular relates to an explosion-proof whitening reduction system for blast furnace granulation towers. Background technique [0002] In the production process of blast furnace ironmaking, a large amount of molten slag will be produced, and the temperature of the molten slag is generally 1400-1600°C. Due to the high temperature, how to safely cool down the molten slag is particularly critical. [0003] At present, domestic blast furnaces mainly use granulation tower equipment for slag cooling treatment. High-temperature slag enters the granulation tower through the slag ditch, and is cooled by circulating slag washing water to convert liquid blast furnace slag into solid granular slag. During the slag granulation process, the slag will release a ...

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Problems solved by technology

[0004] Abnormal slag discharge state, if the internal pressure of the granulation tower is not released in time, an explosion will occur, seriously affecting the operation safety and smooth production

At the same time, a large amount of saturated exhaust steam generated during the slag flushing process will cause corrosion to the casthouse shed and furnace equipment, affect the line of sight of furnace production stations, and cause potential safety hazards

Due to the high temperature (80-90°C) and saturated state of exhaust steam, "white plume" will be produced, which will pollute the environment and cause waste of water resources

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