Blast furnace slag flushing steam white elimination system

Abstract

The invention relates to the field of steel plant smoke plume white elimination, in particular to blast furnace slag flushing steam white elimination system which comprises a slag flushing steam collection pipe section, a slag flushing steam condenser and a slag flushing steam discharge chimney; the slag flushing steam collection pipe section is used for collecting slag flushing steam; the slag flushing steam condenser is connected with the slag flushing steam collection pipe section and introducing a cold medium to condense the slag flushing steam introduced by the slag flushing steam collection pipe section; and the slag flushing steam discharge chimney is connected with a slag flushing steam outlet of the slag flushing steam condenser and is used for introducing a mixed hot gas to be mixed with the slag flushing steam and discharging the mixed gas. For the blast furnace slag flushing steam white elimination system, by utilizing blast furnace wall cooling water to cool the slag flushing steam and utilizing a hot air furnace smoke to be mixed with the slag flushing steam which is not cooled to form unsaturated smoke, the technical problem that white smoke plume is eliminated in the water slag flushing treatment technology by adopting a water quenching method is solved, and the environmental protection problem is solved.

Description

technical field [0001] The invention relates to the field of whitening of smoke plume in iron and steel plants, in particular to a blast furnace slag flushing steam whitening system. Background technique [0002] A large amount of high-temperature slag is produced after blast furnace ironmaking in iron and steel plants. Most of them are cooled by water quenching through slag washing water. When the slag washing water cools high-temperature slag, a large amount of water vapor will be generated. The water vapor is discharged to the atmosphere through the chimney, which not only wastes A lot of heat, and produce a lot of white fog, causing pollution to the environment. In the process of blast furnace slag treatment with slag washing water, 40% of the heat of the slag is taken away in the form of water vapor. Due to the huge heat of the slag washing water vapor, it causes thermal pollution to the environment and affects the appearance of the steel plant. In addition, blast furn...

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Problems solved by technology

[0004] The present invention is a slag flushing steam whitening system, the main purpose of which is to overcome the deficiencies and shortcomings of the prior art. The blast furnace wall cooling water is used to cool the slag flushing steam and the hot blast furnace flue gas is used to mix the uncooled slag flushing steam. The formation of unsaturated flue gas solves the technical problem of eliminating the white plume in the water-washing slag treatment process using the water quenching method, and solves the environmental protection problem

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