Flue gas purification device capable of efficiently desulfurizing and denitrifying and implementation method of flue gas purification device

Abstract

The invention discloses a flue gas purification device capable of efficiently desulfurizing and denitrifyingand an implementation method of the device, and belongs to the technical field of flue gas purification. The flue gas purification device comprises a denitrification tank body, a mixing preliminary reaction device is arranged at the bottom end of the denitrification tank body, a secondary mixing assembly is arranged in the denitrification tank body above the mixing preliminary reaction device, and the top end of the denitration tank body is connected with the catalytic reactor through a flow guide pipeline. According to the flue gas purification device capable of efficiently desulfurizing and denitrifying and the implementation method of the device, the influence on the gas quality is avoided, and due to the inverted conical arrangement, impurities can conveniently fall off under the action of gravity, the cleaning efficiency is improved, the mixing uniformity is ensured, the denitrifying time is saved, denitrifying is effectively performed, the denitrifying effect is effectively ensured, the desulfurizing effect is improved, and the resource waste is reduced; precipitation and solidification are prevented, the reaction quality is guaranteed, the dispersion uniformity is improved, the reaction uniformity is guaranteed, the desulfurization speed is increased, an adsorption fiber layer adsorbs water and impurities, and the quality of filtered gas is guaranteed.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to an efficient desulfurization and denitrification flue gas purification device and an implementation method thereof. Background technique [0002] The main pollutants of coke oven flue gas are SO2, NOx and so on. SO2 and NOx not only endanger human health, but also seriously pollute the environment. Flue gas desulfurization, in FGD technology, can be divided into the following five methods according to the type of desulfurizer: calcium method based on CaCO3, MgO The magnesium method based on Na2SO3, the sodium method based on Na2SO3, the ammonia method based on NH3, and the organic alkali method based on organic alkali. The alkaline substance reacts to remove SO2 from the flue gas. The most commonly used alkaline materials for flue gas degassing are limestone, quicklime and slaked lime. Limestone is abundant and relatively cheap, and both quicklime and slaked lime...

AI Technical Summary

Problems solved by technology

The ratio between sulphite and sulphate depends on the process conditions, in some processes, all sulphite is converted to sulphate, in existing plants, the gas is desulphurized by limestone water, in the process of desulphurization Generally, only one layer of spray is set up, and the gas can be sprayed with limestone water once, so that the desulfurization effect is not good, and a large amount of demisting cannot be performed, and the emission standard cannot be met.

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