Desulfurization and denitrification treatment system and method for discharged flue gas in iron and steel smelting production

Abstract

The invention relates to a desulfurization and denitrification treatment system and method for discharged flue gas in iron and steel smelting production. The system comprises a sleeving frame, a locking bolt, a liquid outlet frame group, an intermittent conveying unit, a spray head unit, two connecting rods and retention units, wherein the side wall of the sleeving frame is connected with the locking bolt in a threaded fit mode; the liquid outlet frame group is installed at the middle part of the sleeving frame, and the lower end of the liquid outlet frame group is connected with the intermittent conveying unit; the lower end of the intermittent conveying unit is connected with the sprayer unit; the two connecting rods are installed at the left end and the right end of the sleeving frame;and the retention units are evenly arranged between and connected with the two connecting rods from top to bottom. According to the invention, the treatment system and method can solve the problems that traditional spraying is generally of a single-nozzle design, most of sprayed mist-like desulfurization and denitrification agents are concentrated at one place and difficult to react with rising flue gas in a large range, and the mist-like desulfurization and denitrification agents are possibly discharged and diffused by the flue gas with huge impact force when being in contact with the risingflue gas, and the like.

Description

Technical field [0001] The invention relates to the technical field of desulfurization and denitrification treatment, in particular to a desulfurization and denitrification treatment system and a treatment method for flue gas exhausted from steel smelting production. Background technique [0002] At present, the rapid development of industrialization inevitably produces a large amount of industrial waste gas. These will not only affect the normal production of the factory, but also cause serious pollution to the environment and cause harm to the human body. Therefore, it is necessary to The flue gas is desulfurized and denitrified. The traditional treatment method usually puts the nozzle in the chimney, and performs the flue gas treatment by atomization and direct injection. However, this method often causes larger problems in actual operation: [0003] The traditional spray is usually designed with a single nozzle, and the sprayed mist desulfurization and denitrification agent is ...

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Problems solved by technology

[0005] The invention can solve the problem that the traditional nozzle is usually designed with a single nozzle, and the sprayed mist desulfurization and denitrification agents are mostly concentrated in one place, which makes it difficult to react to the rising flue gas in a wide range, resulting in the direct discharge of part of the unreacted flue gas , and when the mist desulfurization and denitrification agent is in contact with the rising flue gas, it may be discharged and diffused by the flue gas with a huge impact force, thereby reducing the reaction time and effect between the two.

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