Washing tower suitable for desulfurization of ship waste gas

Abstract

The invention discloses a washing tower suitable for desulfurization of ship waste gas, wherein a baffle plate is horizontally arranged right above an upper port of a waste gas inlet and is fixedly connected with the waste gas inlet through a fixing strip; a first gas collecting hopper covers the upper part of the baffle plate and is of a funnel-shaped structure with a downward opening; a group ofwashing liquid through holes which are communicated up and down are formed in the outer side of the first gas collecting hopper in the circumferential direction; a swinging gas collecting barrel witha downward opening is arranged above the second gas collecting hopper and can rock in the tower body, so that a region between the swinging gas collecting barrel and the second gas collecting hopperis a secondary reaction region; and second nozzles are densely distributed on the inner top surface of the swinging gas collecting barrel. The swing gas collecting barrel in the secondary reaction region effectively utilizes the shaking of the ship, the shaking of the swing gas collecting barrel is aggravated by a spring group, and the shaking is creatively used for further uniformly dispersing the waste gas and the washing liquid, so that the efficiency and the effect of removing sulfur from the waste gas are more effectively improved.

Description

technical field [0001] The invention belongs to the field of ships, in particular to a washing tower suitable for desulfurization of ship waste gas. Background technique [0002] In order to reduce the impact of sulfur dioxide in ship exhaust on the atmospheric environment, the sulfur content of global marine fuel oil should not exceed 0.5%, and the European Emission Control Area (ECA) should not exceed 0.1%. At present, there are three measures to fulfill IMO's requirements for sulfur emissions: use of low-sulfur fuel oil, use of liquefied natural gas (LNG), and ship exhaust gas desulfurization technology (device). In terms of ship exhaust gas desulfurization technology, the main technologies that are in pilot scale or have been applied on actual ships at home and abroad include: seawater method, fresh water + sodium hydroxide method, hybrid system and magnesium-based-seawater method, etc. The ship exhaust gas desulfurization system is roughly composed of the core scrubber...

AI Technical Summary

Problems solved by technology

The scrubbing tower used in this technology is usually relatively simple. Regardless of whether the exhaust gas enters from the bottom or the side, the concentration of the exhaust gas is usually relatively high at the center of the tower body, and the concentration at the surrounding is relatively low, which fails to solve the problem of uneven air distribution, resulting in desulfurization. The effect is not good; at the same time, the existing technology does not fully consider the impact of ship shaking on the desulfurization effect, which will also lead to poor desulfurization effect

In addition, there is also a washing tower device that adopts the principle of rotating spray, and has a built-in multi-stage fan. Although it can improve the desulfurization effect, the structure is relatively complicated, and it is inconvenient to maintain once the fan is damaged.

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