Ship flue gas treatment device

Abstract

The invention discloses a ship flue gas treatment device which comprises a tank body, an ozone supply device, a seawater supply device and an alkali liquor supply device, wherein a primary oxidation chamber, a primary absorption chamber, a secondary oxidation chamber and a secondary absorption chamber are sequentially arranged in the tank body from bottom to top, the primary oxidation chamber is connected with a flue gas outlet pipe of a ship, the primary oxidation chamber is connected with the primary absorption chamber, the primary absorption chamber is connected with the secondary oxidationchamber, and the secondary oxidation chamber is connected with the secondary absorption chamber; the ozone supply device is connected with the primary oxidation chamber and the secondary oxidation chamber; the seawater supply device is connected with the primary absorption chamber; and the alkali liquor supply device is connected with the secondary absorption chamber. Through two times of oxidation absorption, oxidation and absorption of sulfur oxides and nitrogen oxides can be effectively guaranteed, the situation that part of sulfur oxides and nitrogen oxides are not absorbed and are directly discharged due to low oxidation efficiency or absorption efficiency is avoided, and efficient treatment of ship flue gas is further guaranteed.

Description

technical field [0001] The invention relates to the technical field of ship flue gas treatment, in particular to a ship flue gas treatment device. Background technique [0002] At present, there are many mature flue gas treatment technologies for coal-fired power plants, metallurgy and chemical industries on land, while the flue gas treatment technologies for ships are still in their infancy. The vast majority of ships use high-power diesel engines as the main power plant, and they generally use heavy residual oil as fuel. Although the diesel engine has the advantages of high thermal efficiency and good economy, its exhaust gas contains nitrogen oxides (NO x ), sulfur oxides (SO x ), particulate matter (PM) and other harmful pollutants have caused serious harm to the atmospheric environment and human health. [0003] In the existing ship flue gas treatment technology, the tail gas treatment process for ships is complicated, such as: for the NO X , using catalytic reducti...

AI Technical Summary

Problems solved by technology

Although the diesel engine has the advantages of high thermal efficiency and good economy, its exhaust gas contains nitrogen oxides (NO x ), sulfur oxides (SO x ), particulate matter (PM) and other harmful pollutants have caused serious harm to the atmospheric environment and human health

[0003] In the existing ship flue gas treatment technology, the tail gas treatment process for ships is complicated, such as: for the NO X , using catalytic reduction technology (lean NO X Catalytic reduction, selective catalytic reduction of NO X , NO X Adsorption reduction catalysis), etc.; for SO emissions from ship flue gas 2 , using limestone-gypsum method, etc.

In the exhaust gas treatment process of ships, there are disadvantages such as the need to use a large amount of catalytic reducing agent and desulfurizer, the number of equipment is large and large, and the construction and operation costs are high.

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