Annular movable tile kiln flue gas dedusting and desulfurizing apparatuses and methods thereof

Abstract

The invention discloses various annular movable tile kiln flue gas dedusting and desulfurizing apparatuses. The principle of the apparatuses is characterized in that flue gas in a flue gas discharge zone goes through at least one filter screen under the drainage action of a closed drainage cover to filter out particulate foreign materials in the flue gas; and the flue gas filtered by the filter screen reacts with a NaOH solution sprayed by at least one row of nozzles under the drainage action of the closed drainage cover, a reacted gas is discharged to air under the action of an exhaust fan or an axial flow fan, a reacted mixed liquid flows to a regeneration pool provided with a Ca(OH)2 solution, a Na2SO3 solution and a NaHSO3 solution in the mixed liquid flowing to the regeneration pool further reacts with the Ca(OH)2 in the regeneration pool to afresh generate a NaOH solution, and the NaOH solution afresh generated in the regeneration pool is pumped to the nozzles through a water pump and undergoes a next reaction. The apparatuses have the advantages of good sulfur removal effect, reactant recycling and resource saving.

Description

technical field [0001] The invention relates to a dust removal and desulfurization device, in particular to a ring-type mobile brick kiln flue gas dust removal and desulfurization device and method. Background technique [0002] The biggest feature of the circular mobile kiln brick and tile kiln is that the brick body does not move while the kiln body moves in a rotating manner. The kiln body runs along a circular track and is divided into drying section, preheating section, roasting section and heat preservation section from front to back. , Cooling section, the total length is about l20m ~ 160m. The billet separating machine carried by the mobile trolley runs in the same direction as the kiln body, and the billets are stacked at the same time. The rotating and moving kiln body moves forward on the track at a speed of 70m / d~l20m / d, the front end "eats" the brick adobe, and the rear end "spits out" the finished brick, and completes drying-preheating-roasting-cooling- —The ...

AI Technical Summary

Problems solved by technology

The rotating and moving kiln body moves forward on the track at a speed of 70m / d~l20m / d, the front end "eats" the brick adobe, and the rear end "spits out" the finished brick, and completes drying-preheating-roasting-cooling- —The whole process of brick production. This kind of circular mobile brick kiln has a large output and high efficiency. It is very popular in the market at present. The desulfurizer and desulfurization tower on the power plant or boiler are used for flue gas treatment. Since the water circulation system and desulfurization tower of the existing desulfurizer are installed separately, the site covers a large area, and the installation is time-consuming, requiring a lot of manpower and material resources. , the equipment cost is high, and the maintenance is difficult, which is not conducive to popularization and use. Therefore, there is an urgent need for a simple, practical, and low-cost brick kiln flue gas dedusting and desulfurization device that matches it.

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