Boiler smoke exhaust purification system

Abstract

The invention discloses a boiler smoke exhaust purification system, which includes a dust removal chamber and a desulfurization and denitrification chamber. The upper part between the dust removal chamber and the desulfurization and denitrification chamber communicates through a smoke exhaust channel, and the middle between the dust removal chamber and the desulfurization and denitrification chamber communicates through an overflow channel; and the upper part of the dust removal chamber is provided with a water supplying pipe, the liquid level in the dust removal chamber is maintained to be located on the position of an overflow channel opening, the liquid level in the desulfurization and denitrification chamber is maintained to be not higher than the position of the overflow channel opening, and the upper part of the desulfurization and denitrification chamber is provided with a lye supplying pipe. According to the boiler smoke exhaust purification system, dust removal and desulfurization and denitrification are conducted separately, and the problems that lye waste due to the fact that dust contaminates lye and precipitation is difficult to handle can be solved; and dust depositions are cleared independently through the dust removal chamber, the desulfurization and denitrification chamber is used for discharging reactive sediments independently, and different effluents are handled correspondingly, so that the action of efficient handling and secondary pollution prevention is 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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