Fuel oil system of ship

Abstract

The invention discloses a fuel oil system of a ship; the fuel oil system comprises a main engine, a low vulcanized oil cabin, a diesel oil cabin and a heavy oil cabin, wherein the main engine is connected with an oil supply unit by an oil line; the low vulcanized oil cabin, the diesel oil cabin and the heavy oil cabin are connected with the oil supply unit by an oil line; the oil supply unit comprises a low vulcanized oil cooler, an oil feed pump, a fuel oil heater, a fuel oil self-cleaning strainer, a fuel oil return cylinder and a fuel oil circulating pump; one end of the oil feed pump is connected with the fuel oil return cylinder; the other end of the oil feed pump is respectively connected with the low vulcanized oil cabin, the diesel oil cabin and the heavy oil cabin; a return circuit is arranged on the fuel oil return cylinder and is connected with the main engine; a return circuit is arranged on the fuel oil return cylinder and is sequentially connected with the fuel oil circulating pump, the fuel oil heater and the fuel oil self-cleaning strainer; the low vulcanized oil cooler is arranged between the fuel oil circulating pump and the fuel oil self-cleaning strainer; and necessary valves are arranged on the oil lines or pipelines. The low-sulfur fuel oil system of the ship of the invention has the advantages of being simple, free in oil line switching and stable in operating performances, meeting the requirements of various regulations and effectively reducing the operating cost; meanwhile, the service life of equipment is prolonged; and the fuel oil system has very good practical applicability and has very good economic benefits and social benefits.

Description

technical field [0001] The invention relates to a ship fuel oil system, in particular to a ship fuel oil system. Background technique [0002] At present, sulfur oxides are the main cause of acid rain, which can destroy plants and vegetation, and damage buildings. At the same time, sulfur oxide emissions also increase air pollution and cause respiratory diseases. Ship diesel engine emissions contain sulfur oxides. In order to reduce sulfur oxide emissions from ships, the MARPOL 73 / 78 Convention has restricted this as early as 2005: (1) Install a ship SOx exhaust gas purification system to reduce the SOx in the exhaust gas The emissions are reduced to 6.0g / kWh or below, even with the use of sulfur treatment devices. Due to the immature research and development of exhaust gas purification technology, the investment in sulfur treatment equipment is large and cumbersome, and general ships will not use it. (2) Limit the sulfur content of fuel oil used by ships. This measure is...

AI Technical Summary

Problems solved by technology

Due to the immature research and development of exhaust gas purification technology, the investment in sulfur treatment equipment is large and cumbersome, and general ships will not use it.

(2) Limit the sulfur content of fuel oil used by ships

This measure is currently regarded as the most effective and most direct measure to solve the problem of sulfur oxide emissions from ships. Therefore, various competent departments have made corresponding restrictions on the sulfur content of marine fuel oil.

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