Novel ship waste gas washing and desulfurizing device

Abstract

The invention discloses a novel ship waste gas washing and desulfurizing deviceinvention, and relates to the technical field of marine diesel engine tail gas treatment. The device comprises a desulfurization tower, a cooling spraying layer, a main spraying layer and a rotational flow plate demister are sequentially arranged in the desulfurization tower from bottom to top, the device further comprises a grid structure, a plurality of floating balls and two annular flow guide plates, which are arranged in the desulfurization tower, the grid structure is arranged between the cooling spraying layer and the main spraying layer, a plurality of isolated small accommodating cavities are formed between the grid structure and the desulfurization tower, the floating balls are respectively arranged inthe small accommodating cavities, and the two annular flow guide plates are fixed on the inner wall of the desulfurization tower. The ship waste gas washing and desulfurizing device has the advantages of low blocking possibility and easy washing of the floating balls in the accommodating cavities, high working condition adaptability, low investment, low operation and maintenance cost and the like, the wet desulphurization efficiency can be remarkably improved, and the side wall effect of airflow is avoided by arranging the annular flow guide plates to make sulfur oxide and washing liquid fully mixed and reacted.

Description

technical field [0001] The invention relates to the technical field of marine diesel engine tail gas treatment, in particular to a marine exhaust gas washing and desulfurization device. Background technique [0002] The marine transportation industry is an important field in the development of modern society and economy. With the increase of world trade volume, the tonnage and number of ships have risen sharply. Marine diesel engines are a key source of power in the transportation of modern world trade. In order to reduce the transportation cost of ships, low-quality fuel oil with high sulfur content is usually used as fuel, and engine exhaust contains a large amount of SO 2 , nitrogen oxides and particulate matter and other pollutants, the ship's SO 2 Emissions have clear limit standards. The use of low-sulfur fuel oil and the installation of exhaust gas desulfurization devices are the main technical measures to meet the emission standards for ship exhaust sulfur emissio...

AI Technical Summary

Problems solved by technology

In the desulfurization reaction stage of this invention, the waste gas is simply passed into the washing liquid, the reaction is not sufficient, and the desulfurization effect is not good; the waste gas of the invention enters the reaction solution and is discharged out of the tower without passing through the demisting device, so it is easy to carry out Washing droplets, due to insufficient reaction, will also contain unreacted sulfur oxides, causing contamination and severe corrosion of external devices; this invention does not consider the side wall effect during the spray cooling process, and part of the gas is discharged from the tower without cooling In addition, the temperature of the gas discharged from the desulfurization tower is higher

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