Ship flue gas desulfurization and denitration device and technology

Abstract

The invention provides a ship flue gas desulfurization and denitration device and technology. The device provided by the invention comprises a spraying tower and a flue connected with the spraying tower, wherein the flue is provided with a flue gas inlet, an ozone injector and a first spraying nozzle in sequence along the movement direction of flue gas; a rectification porous plate, a second spraying nozzle, a third spraying nozzle, a flue gas cooler, a defogging layer and a gas outlet of the spraying tower are arranged in a main body space of the spraying tower in the axial direction along the movement direction of the flue gas; the bottom of the spraying tower is a reversed cone, and a wastewater outlet of the spraying tower is arranged at the center of the reversed cone. According to the device provided by the invention, an ozone oxidization technology and a spraying and absorption technology are combined to treat ship flue gas; low-valence nitrogen oxide and sulfur dioxide are oxidized by utilizing ozone, so that pollutants are efficiently removed by subsequent three times of circulating spraying and absorption. The technology is reasonable and the device occupies a small area;the ship flue gas desulfurization and denitration device and technology are very convenient in the aspect of construction or reconstruction on ships, and the construction cost is low.

Description

technical field [0001] The invention relates to the field of atmospheric environment protection, in particular to a ship flue gas desulfurization and denitrification device and process. Background technique [0002] With the development of the shipping industry, the exhaust pollution of ship engines is increasing day by day. The pollutants emitted include nitrogen oxides (NOx), sulfur oxides (SOx), carbon monoxide (CO), hydrocarbons (HC) and particulate matter (PM ), etc., and has the characteristics of large fluidity, large diffusion, and long duration. According to the statistics of the International Maritime Organization (IMO) in 2014, SOx and NOx emitted by ships accounted for about 13% and 15% of the global total emissions, respectively. Statistics from the Motor Vehicle Emission Monitoring Center of the Ministry of Environmental Protection of China show that in 2013, SO2 emissions from ships accounted for about 8.4% of the country's total emissions, and NOx emissions ...

AI Technical Summary

Problems solved by technology

Therefore, there is still a lack of a ship flue gas denitration treatment system that can meet the emission requirements, occupy a small area, have high efficiency, simple maintenance, and adapt to the special natural environment on the sea.

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