Ship tail gas treatment system

Abstract

The invention relates to the field of ship tail gas emission control and relates to a ship tail gas treatment system. The ship tail gas treatment system comprises a tail gas waste heat recycling unitand a tail gas treatment unit; the tail gas waste heat recycling unit comprises a filter and an evaporator; the tail gas treatment unit comprises a washing agent reactor and a tail gas processor; thewashing agent reactor is connected with the evaporator; the tail gas processor comprises a shell which is provided with a flow-in hole and a flow-out hole; the flow-in hole is connected with the washing agent reactor and an oxygen supplying element; the shell is provided with a rotating shaft which is provided with a Tesla turbine rotating assembly; the Tesla turbine rotating assembly comprises aplurality of wafers; a photocatalyst layer is arranged on the outer side face of each wafer; a plurality of ultraviolet lamps are arranged in the shell; and the rotating shaft is provided with a driving mechanism driving the rotating shaft to rotate. The ship tail gas treatment system has the advantages that in the process of recycling the ship tail gas waste heat, sulfide and nitrated compound inship tail gas can be effectively recycled.

Description

technical field [0001] The invention belongs to the field of ship tail gas emission control and relates to a ship tail gas treatment system. Background technique [0002] Marine diesel engines are the power source for ships sailing at sea. At present, the power output of marine diesel engines for power output generally accounts for 30% to 45% of the total heat of fuel combustion, and the heat discharged from ship exhaust waste heat accounts for 55% to 70% of the total heat of combustion. The temperature is between 350°C and 410°C, so the waste heat of ship exhaust gas has a high recovery value. However, when the temperature of ship exhaust gas is lower than 125°C, the pollutants in ship exhaust gas, such as sulfide and nitrate, will form oxides with oxygen in the air, which will cause low-temperature acid corrosion to equipment. At this time, the temperature is generally lower than 150 °C ship exhaust gas is discharged into the evolution system, stopping the recovery of was...

AI Technical Summary

Problems solved by technology

Although this scheme can oxidize sulfide and nitrate, the exhaust gas flow rate of the ship is fast, and the active oxygen molecules excited by the first active oxygen generator and the second active oxygen generator cannot fully mix with sulfide and nitrate, and the photocatalyst The area is small, and the contact time of sulfide, nitrate and active oxygen molecules with the photocatalyst is short, which leads to a small probability of actual oxidation reaction and low work efficiency

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