Metal smelting tail gas recovery treatment system and treatment method thereof

Abstract

The invention discloses a metal smelting tail gas recovery treatment system and a treatment method thereof, and relates to the field of smelting tail gas treatment. The metal smelting tail gas recovery treatment system comprises a spraying box, a gas mixing cylinder is integrally formed on one side of the bottom of the spraying box, a plurality of branch insertion pipes are connected to an annular pipe at the bottom of the gas mixing cylinder in a branching mode and obliquely penetrate to the bottom of the gas mixing cylinder, and air blowing heads are arranged at the ends of the branch insertion pipes; the system has the beneficial effects that an alkaline absorbent at the bottom of the gas mixing cylinder is pumped through a water pump and supplied to spray heads arranged at the upper ends of a first channel, a second channel and a third channel for spraying, so that the alkaline absorbent and tail gas are subjected to contact reaction, an S-shaped channel formed by the first channel, the second channel and the third channel is used for circulation, the flow distance of the tail gas in the gas mixing cylinder is improved, the spraying time is prolonged, and the occupied area required by equipment is greatly reduced while the sulfur dioxide absorption effect is ensured.

Description

technical field [0001] The invention relates to the field of smelting tail gas treatment, in particular to a metal smelting tail gas recovery and treatment system and a treatment method thereof. Background technique [0002] In the process of smelting sulfide minerals, a large amount of tail gas will be discharged. These tail gases contain flue gas containing sulfur dioxide. If the tail gas is discharged directly, it will cause serious environmental pollution. Therefore, it is usually necessary to desulfurize the tail gas. When treating sulfur dioxide, the sulfur dioxide is usually treated with alkaline absorbents such as lime slurry, limestone slurry, magnesium hydroxide slurry, ammonia water, and sodium hydroxide, and the tail gas is passed into the reaction tank storing the alkaline absorbent to achieve the purpose of treating the exhaust gas. Removal of sulfur dioxide contained in. [0003] In order to ensure the absorption efficiency of sulfur dioxide in the tail gas, ...

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Problems solved by technology

[0003] In order to ensure the absorption efficiency of sulfur dioxide in the tail gas, the existing tail gas treatment equipment needs to ensure sufficient contact reaction between the sulfur dioxide and the alkaline absorbent. General effect

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