Activated carbon type exhaust gas denitration device and method of ship

Abstract

The invention provides an activated carbon type exhaust gas denitration device of a ship. The device comprises a waste gas turbocharger 2, a smoke three-way valve 3, a PM removing device 4, a smoke cooler 5, an NO oxygenizer 5, a reactor 9, an activated carbon conveying control unit 23 and a temperature control unit 16. Compared with an existing ship denitration device, the device is simple in system composition; activated carbon is used as an adsorbent and a reducing agent; the activated carbon is high in adsorbing capacity and reducing capacity, so that the size of the reactor of a denitration system is far less than the size of a reactor of an existing urea based ship SCR (Selective Catalytic Reduction) denitration system; and the existing ship SCR denitration system basically adopts NH3, prepared through a urea water solution, as the reducing agent, the urea water solution easily forms urea crystals on the surfaces of a mixer and a catalyst to cause the reduction of working performances of the denitration system, while for the device, the consumed material is only the activated carbon, so that the advantages are obvious.

Description

technical field [0001] The invention relates to a tail gas denitrification device and method, in particular to a ship tail gas denitrification device and method based on an activated carbon method, and belongs to the field of ship diesel engine emission control. Background technique [0002] The marine diesel engine has the advantages of high single-machine power, high fuel economy, and unit power CO 2 Low emissions and other advantages, so diesel engines are widely used in the field of marine transportation. Marine diesel engines will produce a large amount of NO in the working process. NO is a toxic air pollutant, which poses a great threat to the environment and human health. The International Maritime Organization (IMO) has always had strict restrictions on ship exhaust emissions. Among them, the Tier III emission guidelines of the MARPOL Convention were officially implemented on January 1, 2016, posing greater challenges to the NOx emission control of marine diesel eng...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a tail gas denitrification device based on the activated carbon method in order to solve the defects of the original SCR technology such as large floor space, high reaction temperature and high economic cost; the present invention also provides a tail gas denitrification device based on the activated carbon method. Denitrification method

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