Integrated device for dust removal, desulfurization and denitrification of ship waste gas and ship

Abstract

The integrated device comprises a metal DPF dust removal unit, a first air-cooled heat exchanger, a second air-cooled heat exchanger, an SCR denitration unit, an induced draft fan and a desulfurization unit; an outlet of the metal DPF dust removal unit is connected with an inlet of the first air-cooled heat exchanger, and an outlet of the second air-cooled heat exchanger is connected with an outlet of the second air-cooled heat exchanger; an outlet of the first air-cooled heat exchanger is connected with an inlet of the SCR denitration unit, an outlet of the SCR denitration unit is connected with an inlet of the induced draft fan, an outlet of the induced draft fan is connected with an inlet of the second air-cooled heat exchanger, and an outlet of the second air-cooled heat exchanger is connected with an inlet of the desulfurization unit. According to the invention, under the condition that the diesel engine ship uses light diesel oil, heavy diesel oil, shale oil and fuel oil, sulfur dioxide, nitrogen oxide and particulate matters in tail gas can be integrally treated, and the problems of black smoke generated by exhaust of the ship and excessive emission of pollutants are solved.

Description

technical field [0001] The invention relates to ship waste gas dust removal, desulfurization and denitrification treatment, in particular to an integrated device for ship waste gas dust removal, desulfurization and denitrification and a ship. Background technique [0002] Since marine engines are mainly diesel engines, the fuels used are light diesel oil, heavy diesel oil, shale oil, and fuel oil. Compared with other motor vehicle exhaust gases, SO 2 (sulfur dioxide), NO x (nitrogen oxides) and particulate matter (black smoke) have higher concentrations, which are more harmful to human body and environment. [0003] In the prior art, the exhaust gas post-treatment method (EGC) is generally adopted, that is, by installing an exhaust gas treatment device, the SO in the ship exhaust gas 2 (Sulfur dioxide) is mostly removed to achieve the effect of emission reduction. However, in the case of ships using light diesel oil, heavy diesel oil, shale oil, and fuel oil, the flue gas...

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Problems solved by technology

[0004] In order to solve the problems in the prior art, the object of the present invention is to provide an integrated device and ship for dust removal, desulfurization and denitrification of ship exhaust gas. The present invention can realize the use of light diesel oil, heavy diesel oil, shale oil, fuel In the case of oil, the SO in the exhaust gas 2 (sulfur dioxide), NO x (Nitrogen oxides) and particulate matter (black smoke) are treated in an integrated manner to solve the problems of black smoke from ship exhaust and excessive discharge of pollutants

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