Oil-water hybrid ship power system and ship satisfying ship's nitrogen oxide emission ⅲ

Abstract

The invention belongs to the technical field of ships, and discloses an oil-water hybrid ship power system and a ship that satisfy the ship's nitrogen oxide emission III. Most of the devices or structures of the ship power system are arranged on the port side of the engine room, and are located far from the stern of the engine room The overall layout of the ship's power system is clean and beautiful, and the amount of pipeline materials can be greatly reduced, which greatly reduces the cost. While meeting the nitrogen oxide emission level III standard, it can also ensure a certain aesthetics. , compactness, economy and reliability; the ship uses oil-water mixture as fuel for the main engine. Compared with exhaust gas treatment methods such as selective catalytic reduction and exhaust gas recirculation, the ship's exhaust emission standards can not only meet nitrogen oxide emissions Class III standard, it also has the advantage of low fuel consumption, and the ship has low manufacturing cost and high sailing economy.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to an oil-water hybrid ship power system and a ship that satisfy the nitrogen oxide emission III of ships. Background technique [0002] At present, ships mainly use selective catalytic reduction, exhaust gas recirculation and other methods to reduce nitrogen oxide emissions; the exhaust gas recirculation method is mainly suitable for ships that burn low-sulfur fuel oil. If high-sulfur fuel oil is burned, a separate desulfurization scrubber needs to be added Tower, the economic cost will increase, and the equipment layout occupies a large space; the investment cost of the selective catalytic reduction method is large, and its investment cost is generally 5% of the ship construction cost; the reactor and the mixing pipe occupy a large space, the equipment layout is difficult, and the pipelines are intricate. It is necessary to strictly control the content of urea. If the urea is excess...

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Problems solved by technology

[0002] At present, ships mainly use methods such as selective catalytic reduction and exhaust gas recirculation to reduce the emission of nitrogen oxides; the exhaust gas recirculation method is mainly applicable to ships burning low-sulfur fuel oil. If high-sulfur fuel oil is burned, a separate sulfur removal scrubber is required. tower, the economic cost will increase, and the equipment layout takes up a lot of space; the selective catalytic reduction method has a large investment cost, and its investment cost is generally 5% of the ship construction cost; the reactor and the mixing tube take up a large space, the equipment layout is difficult, and the pipeline is intricate Miscellaneous; the content of urea needs to be strictly controlled. If the urea is excessive, although the conversion rate of nitrogen oxides can be improved, a large amount of ammonia will leak and pollute the environment.

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