KR-20260062807-A - FUEL TREATMENT SYSTEM AND SHIP HAVING THE SAME

Abstract

A fuel processing system according to one embodiment of the present invention and a vessel including the same comprises a fuel supply unit that supplies fuel stored in a fuel tank to a demand point, a fuel discharge unit including a recovered fuel discharge unit that drains fuel remaining in the fuel supply unit and a residual fuel discharge unit that recovers residual fuel remaining in the demand point, and a purging control unit that controls purging for the fuel supply unit and the demand point, wherein the purging control unit discharges purging gas using the recovered fuel discharge unit and then discharges purging gas using the residual fuel discharge unit.

Inventors

• 추성한
• 박근준

Assignees

• 에이치디한국조선해양 주식회사
• 에이치디현대중공업 주식회사

Dates

Publication Date

20260507

Application Date

20250630

Priority Date

20241025

Claims (8)

1. A fuel supply unit that supplies fuel stored in a fuel tank to a demand center; A fuel discharge unit comprising a recovered fuel discharge unit for draining fuel remaining in the fuel supply unit and a residual fuel discharge unit for recovering residual fuel remaining in the demand unit; and It includes a purging control unit that controls purging for the fuel supply unit and the demand location; The above-mentioned purging control unit is, A fuel treatment system that discharges purging gas using the above-mentioned recovered fuel discharge section, and then discharges purging gas using the above-mentioned residual fuel discharge section.
2. In paragraph 1, The above-mentioned recovered fuel discharge unit is, The fuel remaining in the fuel supply unit is drained through the first discharge line connected to the above demand source, and The above residual fuel discharge unit is, Remaining fuel remaining at the demand source is recovered through a second discharge line branching off from upstream of the first discharge line, and The above-mentioned purging control unit is, A fuel treatment system that repeatedly discharges purging gas from the first discharge line, and alternately discharges purging gas to the first discharge line and the second discharge line.
3. In paragraph 2, The above-mentioned purging control unit is, In the general shutdown situation of the above-mentioned demand source, purging gas is discharged to the above-mentioned first discharge line, and A fuel processing system that alternately discharges purging gas to the first discharge line and the second discharge line in the event of an emergency stop situation at the above-mentioned demand source.
4. In paragraph 3, The above-mentioned purging control unit is, A fuel processing system that, in the event of an emergency stop at the above-mentioned demand site, alternately discharges purging gas to the first discharge line and the second discharge line when the initial 6 purging gas discharges, and repeatedly discharges purging gas only to the second discharge line when the purging gas discharges after the 6th discharge.
5. In paragraph 3, A fuel neutralization unit that mixes a fire prevention substance with fuel delivered from at least one of the first discharge line and the second discharge line to neutralize it; further comprising The above-mentioned first discharge line is, Includes a separator and a buffer tank, The above second discharge line is, A fuel processing system including a knockout drum and a recovery tank.
6. In paragraph 5, The above-mentioned purging control unit is, A fuel processing system that, in the event of an emergency stop at the above-mentioned demand site, allows fuel and purging gas to flow into the separator for only 3 out of the initial 6 purging gas discharges, and allows fuel and purging gas to flow into the knockout drum when purging gas is discharged after the 6th discharge.
7. In paragraph 3, The system further includes a purging gas supply unit connected to at least one point in the fuel supply unit and supplying purging gas to the demand location. A fuel processing system in which the purging gas is an inert gas including nitrogen or inert gas.
8. A vessel comprising the fuel processing system of any one of paragraphs 1 through 7.

Description

Fuel Treatment System and Ship Having the Same The present invention relates to a fuel processing system and a ship including the same. Air pollution is becoming severe worldwide and is causing climate change. Because pollutants emitted from ships have a significant impact on air quality, the International Maritime Organization (IMO), the European Union, and the United States are strengthening regulations on pollutants emitted from vessels to reduce air pollution. As regulations on greenhouse gas emissions from ships are gradually strengthened at key milestones by 2050, it is expected that it will be difficult to comply with pollution regulations using only existing engines and fuels. Therefore, with the application of strengthened regulations on greenhouse gas emissions from ships, the use of existing fossil fuels is expected to become difficult, making it urgent to identify alternative fuels capable of meeting future stricter regulations. As alternatives, non-fossil fuels such as ammonia (NH3), biofuels, solar energy, and wind energy are currently being considered. Among them, ammonia is a chemical that can be produced, stored, transported, and supplied, and ammonia-fueled ships are being developed. Conventional ammonia vessels store ammonia fuel in liquid form. Since ammonia has a boiling point lower than room temperature (at atmospheric pressure, -33°C), ammonia storage tanks must meet specific specifications to store it in liquid form. Additionally, because the inside of the tank must be kept at a low temperature to maintain the ammonia in a liquid state, the storage tank must be cooled, and a significant amount of energy is consumed during this cooling process. Furthermore, liquid ammonia storage tanks may generate evaporative gases, which can cause the internal pressure to rise and pose a risk of explosion. Additionally, if liquid ammonia leaks out of the tank, an explosion may occur, and there is a risk of casualties due to the toxicity of the ammonia. As such, existing ammonia vessels face issues regarding the storage of liquid ammonia fuel, engine supply of ammonia fuel, and the discharge of waste ammonia, including the need to improve equipment and operating costs, and in particular, the issue of ensuring absolute safety. FIG. 1 is a conceptual diagram of a fuel processing system according to a first embodiment of the present invention. FIG. 2 is a conceptual diagram of a fuel neutralization unit in a fuel processing system according to a first embodiment of the present invention. FIG. 3 is a conceptual diagram of a fuel processing system according to the 2-1 embodiment of the present invention. FIG. 4 is a conceptual diagram of a fuel processing system according to the second-2nd embodiment of the present invention. FIG. 5 is a conceptual diagram of a fuel processing system according to the second-third embodiment of the present invention. FIG. 6 is a conceptual diagram of a fuel processing system according to a third embodiment of the present invention. FIG. 7 is a side view of a ship according to a fourth embodiment of the present invention. FIG. 8 is a plan view of a ship according to a fourth embodiment of the present invention. FIG. 9 is an enlarged side view of the engine room portion of a ship according to the fourth embodiment of the present invention. The objects, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings. It should be noted that in assigning reference numerals to the components of each drawing in this specification, identical components are assigned the same number whenever possible, even if they are shown in different drawings. Furthermore, in describing the present invention, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions would unnecessarily obscure the essence of the invention. In the present invention, the (gas) fuel may be a substance having a boiling point lower than room temperature at atmospheric pressure and capable of being converted into energy. For example, the fuel may include, but is not limited to, toxic ammonia, liquefied petroleum gas, liquefied natural gas, ethane, etc. However, for convenience, the fuel will be described below as being limited to ammonia. In the drawings of the present invention, straight lines represent flow paths through which various fluids, such as fuel, refrigerant, heat transfer fluid, or purging gas, move, and can be interpreted as pipelines. Furthermore, in the present invention, pressure sensors (PT), temperature sensors (TT), flow sensors (FT), etc., may be installed at appropriate locations without limitation, and the measured values from each sensor may be used in various ways without limitation for the operation of the components described below. In addition, the present invention includes a vessel equipped with a fuel p