A ship chimney desulfurization modification process

Abstract

The invention discloses a ship chimney desulfurization modification process which comprises the following operation steps: dismantling an old chimney, prefabricating a new chimney block, hoisting a desulfurization tower and assembling the new chimney, namely dividing the old chimney into an old chimney reservation section and an old chimney dismantling section, and dismantling the old chimney dismantling section; dividing the new chimney block into a plurality of subsections to be prefabricated, each subsection being formed by folding a plurality of sheet bodies, hoisting the desulfurizing tower into one or more subsections to form the desulfurizing chimney block, and finally hoisting the desulfurizing chimney block and the remaining subsections onto a ship to be in butt joint with an oldchimney reserved section to be assembled into the new chimney. The ship chimney desulfurization modification process provided by the invention is reasonable in process flow, strong in operability, high in efficiency, low in modification cost and low in operation cost after modification.

Description

technical field [0001] The invention relates to a ship refitting process, in particular to a ship chimney desulfurization refitting process. Background technique [0002] With the continuous development of the international shipping industry, SO emissions from ship power plants X It has caused serious pollution to the marine and atmospheric environment. The International Maritime Organization (IMO) formally decided at the 70th session of the Marine Environmental Protection Committee (MEPC70) that starting from January 1, 2020, ships sailing around the world can only use sulfur content not exceeding 0.5 % of fuel oil, ships in operation around the world must meet this requirement to reduce sulfur dioxide (SOx) emissions in exhaust gas. [0003] In response to the "sulfur limit order" proposed by IMO, most of the industry currently adopts three ways to deal with it: [0004] The first is to use low-sulfur fuel oil, which is currently the simplest countermeasure. It requires ...

AI Technical Summary

Problems solved by technology

However, as a complex system, the desulfurization device, especially for a large-volume desulfurization device (such as a desulfurization device with multiple desulfurization towers), if it is directly installed outside the original chimney, on the one hand, it occupies a large amount of space on the deck of the ship. The engine room is generally set up below the chimney, and important equipment is installed in the engine room. A certain space needs to be reserved near the chimney for equipment maintenance. Therefore, the deck space near the chimney is limited, and the installation of a large-volume desulfurization device will make the space layout more crowded. On the other hand, due to the heavy weight of the desulfurization device, if it is directly installed outside the original chimney, it will also cause insufficient support for the desulfurization device by the chimney, which is likely to cause safety hazards; and it is protected and supported by supporting structures such as desulfurization cabins. Desulfurization unit, its operation steps are more complicated

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