Modularized integrated smoke purification system and method for removing plurality of pollutants

Abstract

The invention discloses a modularized integrated smoke purification system and method for removing a plurality of pollutants. The system comprises an absorption tower, wherein a smoke inlet is arranged in the lower end of the absorption tower; the absorption tower is internally provided with a spraying device which is located above the smoke inlet and is used for spraying an absorbent, a first wet-type electric precipitation device located above the spraying device, and a second wet-type electric precipitation device located above the outer side of the absorption tower; and a smoke uniform distributor is arranged between the first wet-type electric precipitation device and the second wet-type electric precipitation device. The invention further discloses a method for carrying out smoke purification by using the system; the pollutants existing in an aerosol form, including SO2, NOX, superfine smoke dust, SO3 acid fog, mercury and the like in the smoke, can be intensively removed; gypsum rain is prevented and an environment is protected; and the smoke purification efficiency is improved.

Description

technical field [0001] The invention belongs to the field of flue gas purification, and in particular relates to a modularized integrated flue gas purification system for removing various pollutants and a method thereof. Background technique [0002] In recent years, with the improvement of people's living standards, the country has paid more and more attention to environmental protection. 2 , NO X In addition to taking effective control measures for dust and smoke, fine smoke, SO 3 The emission reduction of acid mist, mercury and other pollutants in the form of aerosols has been put on the agenda. The "National Environmental Protection "Twelfth Five-Year" Plan" was released. The plan pointed out that during the "Twelfth Five-Year Plan" period, ozone, PM 2.5 monitoring of pollutants. [0003] According to the latest "Emission Standards of Air Pollutants for Thermal Power Plants" promulgated and implemented by the state, the state will put forward higher requirements for ...

AI Technical Summary

Problems solved by technology

However, if the flow velocity of the flue gas at the demister exceeds the design value, the effect of the demister will be greatly reduced, or even fail. As the flue gas is brought into the chimney, the phenomenon of pure flue gas with pulp is formed. The clean flue gas with pulp at the outlet of the absorption tower is partially condensed to form liquid droplets during the discharge process. After the flue gas is discharged from the chimney mouth, it cannot be effectively lifted and diffused to the atmosphere. In the middle, the flue gas cannot dissipate quickly after canceling the GGH device, especially when the local temperature and air pressure are low or in the period of cloudy weather, the dust and liquid droplets carried in the flue gas gather near the chimney and fall to the ground to form "gypsum". "rain" or acid rain will pollute the power plant and its surrounding environment, and even corrode the equipment, seriously pollute the power plant and its surrounding environment, and cause corrosion to the equipment

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