Ship tail gas desulfurization and denitrification purification device

Abstract

The invention discloses a ship tail gas desulfurization and denitrification purification device, and relates to the field of tail gas treatment. The ship tail gas desulfurization and denitrification purification device comprises a purification device body internally provided with a cavity, a finned heat exchanger, a high-voltage corona discharge assembly, a spraying assembly, a plurality of activated carbon plates, a draught fan, a water tank and a liquid taking pump. Two ends of the purification device body are respectively provided with an air suction port and an air outlet which are communicated with the cavity; the finned heat exchanger is arranged at one end, close to the air suction port, in the cavity; the high-voltage corona discharge assembly is arranged at one end, close to the air outlet, in the cavity; the spraying assembly is arranged in the cavity and located between the finned heat exchanger and the high-voltage corona discharge assembly, multiple activated carbon platesare arranged in the cavity and located between the high-voltage corona discharge assembly and the air outlet, the air inlet of the draught fan is communicated with the air outlet, and the liquid taking pump is communicated with the water tank and the spraying assembly through pipelines. The ship tail gas desulfurization and denitrification purification device can be used for rapidly and efficiently treating ship tail gas.

Description

technical field [0001] The present application relates to the field of tail gas treatment, in particular, to a desulfurization and denitrification purification device for ship tail gas. Background technique [0002] Since ships use oil with high sulfur content, the diesel particulate matter, nitrogen oxides and sulfur oxides contained in the exhaust gas will seriously threaten human health and the environment. It is the third largest source of air pollution after corporate emissions, so it is urgent to increase the control of ship exhaust pollution. [0003] At home and abroad, a series of anti-pollution measures have been proposed for ship exhaust, such as the use of low-sulfur oil, the use of LNG fuel instead of existing fuel oil, and additional desulfurization equipment for ships. However, the current treatment measures for engine exhaust cannot be treated economically and efficiently. Pollutants, such as the use of low-sulfur oil will cause a sharp increase in ship oper...

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Problems solved by technology

[0003] At home and abroad, a series of anti-pollution measures have been proposed for ship exhaust, such as the use of low-sulfur oil, the use of LNG fuel instead of existing fuel oil, and additional desulfurization equipment for ships. However, the current treatment measures for engine exhaust cannot be treated economically and efficiently. Pollutants, such as the use of low-sulfur oil will cause a sharp increase in ship operating costs. The use of LNG fuel will cause leakage problems and require enough space to arrange huge fuel tanks, which will reduce transportation efficiency. There will be back pressure problems when installing ship desulfurization equipment. Changes in working conditions and the impact of seawater temperature on desulfurization efficiency. In addition, equipment such as ship exhaust gas cleaning systems is not only expensive (the price of the equipment itself varies from US$800,000 to US$2 million depending on the size of the ship’s engine displacement), Moreover, the volume is large, and the related supporting piping system is complicated, which takes up space on the ship. In addition, the installation cost is about 1 million to 2.4 million US dollars.

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