A ship power system with clean emissions

Abstract

A clean emission ship power system, including an ammonia liquefaction system, an ammonia transport system and an ammonia fuel main engine. The exhaust pipe of the ammonia fuel main engine is connected to a flue gas mixer. The tail gas emitted by the ammonia fuel main engine enters the flue gas mixer. , the flue gas mixer is connected to the SCR reactor, and the ammonia fuel host is also connected to an ammonia fuel supply system. The ammonia fuel supply system is equipped with a liquid ammonia fuel storage tank. The liquid ammonia fuel storage tank is equipped with a liquid ammonia low-pressure pump. The liquid ammonia low-pressure pump pumps out the liquid ammonia through the liquid ammonia daily tank, the liquid ammonia increase pump, and the first valve. , liquid ammonia heater, liquid ammonia supply buffer tank, which is delivered to the ammonia fuel host. The present invention provides a system that uses ammonia as ship power fuel. Since ammonia itself does not contain sulfur and carbon elements, its combustion products are only nitrogen and water, which are the main components of air. The exhaust gas does not contain sulfur oxides and carbon dioxide, which is extremely Clean and environmentally friendly properties.

Description

technical field [0001] The invention relates to the fields of ship construction and ship design, in particular to a ship power system with clean fuel and clean discharge. Background technique [0002] Conventional fuel-powered ships, the exhaust gas contains a large amount of carbon dioxide, sulfur oxides, nitrogen oxides, etc. The discharge of the above gases will cause serious greenhouse gas effects, photochemical smog, acid rain and other pollution, endangering the global climate and human health. . The IMO International Maritime Organization has formulated corresponding emission control regulations for the above-mentioned ship exhaust emissions to reduce the pollution emissions in the ship exhaust. [0003] Regarding CO2 emissions: [0004] The current global warming phenomenon is intensifying, leading to frequent occurrence of extreme weather phenomena and natural disasters around the world. The main culprit is the emission of greenhouse gases represented by CO2. In ...

AI Technical Summary

Problems solved by technology

Liquid ammonia is volatile and toxic. Due to the continuous penetration of external heat into the liquid ammonia fuel storage tank, the liquid ammonia will continue to volatilize. The volatilized ammonia gas will accumulate in the fuel storage tank, which will cause the pressure of the storage tank to rise. If the ammonia volatilization is not handled in time gas, it will lead to safety valve take-off accident, and even damage to the structure of liquid ammonia fuel storage tank

[0012] In summary, ammonia fuel is used as a marine power fuel, and its combustion products do not contain sulfur oxides and carbon dioxide, which is very environmentally friendly. However, the exhaust gas of the ammonia fuel engine developed by MAN still produces nitrogen oxides

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