Boiler smoke exhaust purification equipment

Abstract

The invention belongs to the technical field of boiler smoke exhaust purification equipment, and particularly discloses a boiler smoke exhaust purification system. The boiler smoke exhaust purification equipment comprises a dust removal chamber and a desulfurization and denitrification chamber, wherein the upper part of the dust removal chamber and the upper part of the desulfurization and denitrification chamber communicate with each other through a smoke exhaust passage, the middle part of the dust removal chamber and the middle part of the desulfurization and denitrification chamber communicate with each other through an overflowing passage, a water supplementing pipe is arranged at the upper part of the dust removal chamber so as to keep the liquid level in the dust removal chamber atthe position of an overflowing passage opening, moreover, the liquid level in the desulfurization and denitrification chamber is kept not higher than the position of the overflowing passage opening, and an alkali supplementing liquid pipe is arranged at the upper part of the desulfurization and denitrification chamber. According to the boiler smoke exhaust purification system, dust removal and desulfurization and denitrification are carried out in a separated mode, therefore, the situations that an alkali liquor is wasted due to dust pollution to the alkali liquor and the precipitation is difficult to treat are avoided; dust deposits are independently removed through the dust removal chamber, a reaction precipitate is independently discharged through the desulfurization and denitrificationchamber, and different discharged products are separately treated, so that the effects of high-efficiency treatment and secondary pollution prevention are achieved.

Description

technical field [0001] The invention belongs to the technical field of boiler exhaust gas purification equipment, and in particular relates to a boiler exhaust gas purification system capable of separating and treating smoke dust, desulfurization and denitrification. Background technique [0002] Smoke and sulfur dioxide emitted by industrial boilers are one of the largest sources of air pollution. Common flue gas desulfurization and dust removal devices for coal-fired boilers include spray type, Venturi tube type, impact purification type, etc. In order to improve the efficiency of dust removal, people usually use them in series or refit them, but often make the floor area or The production cost is greatly increased. The more common desulfurization and dust collectors used for boiler exhaust are generally wet desulfurization and dust collectors. The advantage of wet dedusting is that it is easy to maintain, and can achieve dust removal and desulfurization (denitrification...

AI Technical Summary

Problems solved by technology

The turbulent flow dedusting and desulfurization equipment with this structure mixes the dust particles contained in the soot, lye, and sulfur-containing and nitrogen-containing airflow. The dust particles are easy to adhere to the reaction layer, causing silting and clogging, which affects the continuous operation of the equipment, and requires regular cleaning. The spherical layer increases the workload and maintenance cost. After continuous use, in the desulfurization and dust collector, the contact between the gas and the desulfurization slurry is not good enough, so the ideal desulfurization and dust removal effect cannot be achieved.

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