Marine heavy fuel oil purifying and heating system

Abstract

The invention discloses a marine heavy fuel oil purifying and heating system. The marine heavy fuel oil purifying and heating system comprises a heavy fuel oil hot-oil circulating and heating system and a heavy fuel oil purifying system connected with the heavy fuel oil hot-oil circulating and heating system through a pipeline; conduction oil circulates in the heavy fuel oil hot-oil circulating and heating system, and the heavy fuel oil hot-oil circulating and heating system comprises a boiler, a heavy fuel oil sediment tank, a heavy fuel oil daily tank, an oil-gas separator and a hot oil circulating pump, wherein a loop is formed by the boiler, the heavy fuel oil sediment tank, the heavy fuel oil daily tank, the oil-gas separator and the hot oil circulating pump; the heavy fuel oil purifying system comprises an oil separator heater and an oil separator, the oil separator heater is connected with the heavy fuel oil sediment tank through a pipeline, the input end of the oil separator is connected with the oil separator heater, and the output end of the oil separator is connected to the heavy fuel oil daily tank through a pipeline. Heavy fuel oil is heated to improve flowability and ensure transportation of the heavy fuel oil, and the heavy fuel oil is purified, so that working efficiency of a diesel engine set is improved, and service life of the diesel engine set is prolonged.

Description

technical field [0001] The invention relates to a marine fuel oil treatment system, in particular to a marine heavy fuel oil purification and heating system based on nano heat transfer oil. Background technique [0002] In recent years, international oil prices have remained high, which has had a great impact on the shipping industry. The proportion of fuel costs to the total cost has reached more than 50%. In order to reduce fuel costs, improve the economy of ship operation, and advocate the national policy of energy conservation and environmental protection, many shipping companies have started to use heavy fuel oil on marine diesel engines. Due to the shortcomings of heavy fuel oil density, high viscosity, complex composition and poor ignition performance, the mechanical load and thermal load of diesel engines increase. Therefore, when using heavy fuel oil as fuel, it is necessary to go through a heating and purification system to improve oil quality and combustion perfor...

AI Technical Summary

Problems solved by technology

[0019] 2. The heat transfer oil heating system is closed as a whole, and it is difficult to check the corrosion of the heat exchange unit inside even during ship repair

[0020] 3. There is a risk of fire

[0021] The most important of the three defects is the risk of fire

The Ministry of Labor of my country issued the "Organic Heat Carrier Furnace Safety Technology Supervision Regulations" in 1993, requiring manufacturers of heat transfer oil furnaces to have a boiler manufacturing license. Although the manufacture of heat transfer oil waste gas heaters is simpler than that of heat transfer oil furnaces, manufacturers must at least You should have a pressure vessel manufacturing license, but some manufacturers don't even have a pressure vessel manufacturing license, so it is easy to cause quality problems, such as: the welding quality of the heat exchange unit is unqualified, the structure is unreasonable, etc., resulting in leakage

Due to the high temperature of the heat transfer oil in the heat exchange unit, once it leaks, the heat transfer oil will directly contact the flame or sparks in the exhaust of the diesel engine, which will be ignited and cause a fire

[0023] (2) Deterioration of heat transfer oil

In addition, after the heat transfer oil has been used for many years, due to thermal decomposition and carbon polymerization to form coke, the inner diameter of the pipeline is reduced, resulting in a decrease in the flow rate of the heat transfer oil, and an increase in the resistance overcome by the circulating pump. In severe cases, the furnace tube will be blocked. On the other hand, large Molecular polymers increase the viscosity of the heat transfer oil, coke the furnace tube, and increase the thermal resistance to reduce the life of the heat exchange unit

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