CN-122003364-A - Ship provided with electric propulsion system based on gas turbine and waste heat recovery

Abstract

A ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to an embodiment of the present invention includes a stern area (C) that is provided with a gas turbine (142) disposed in an engine room (141) and that generates electric power by combustion of a first fuel supplied from a second fuel tank (143) or a second fuel supplied from cargo tanks (TK 1-TK 4) and supplies the generated electric power to an electric propulsion motor, a second fuel tank (143) disposed in an empty space on an upper side of the engine room (141) and having an upper end exposed to an Upper Deck (UD) and that supplies the first fuel to the gas turbine (142), and a waste heat recovery system (150) that converts waste heat of exhaust gas from the gas turbine (142) into electric power and supplies the electric power to the electric propulsion motor.

Inventors

• WU SHIZHEN
• LI XIANGMIN
• Quan Yijun
• HUANG ZHONGGUI
• JIANG JINJUN
• Shen Zaihui
• LI YUXIN
• PU XINYONG

Assignees

• 韩华海洋株式会社

Dates

Publication Date

20260508

Application Date

20240408

Priority Date

20230905

Claims (20)

1. 1. A ship provided with an electric propulsion system based on a gas turbine and waste heat recovery, comprising a stern area, The stern area includes: A gas turbine arranged in the engine room, generating electric power by combustion of the first fuel supplied from the second fuel tank or the second fuel supplied from the cargo tank and supplying the generated electric power to the electric propulsion motor; The second fuel compartment is arranged in a free space at the upper side of the engine room and has an upper end exposed to an upper deck for supplying the first fuel to the gas turbine, and And a waste heat recovery system that converts waste heat of the exhaust gas from the gas turbine into electric power and supplies the electric power to the electric propulsion motor.
2. 2. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 1, characterized in that, Further comprises: cargo area, cargo tank arranged with liquefied natural gas storage and transportation, and The ship comprises a ship bow area, wherein the ship bow area comprises a living area, a ship bow warehouse and a first isolation empty cabin with a specific structure, the living area is positioned in front of the ship bow direction of the cargo area, the living area is arranged at a preset height from an upper deck of the ship bow and comprises a cockpit, the ship bow warehouse is arranged at the lower part of the upper deck, and the first isolation empty cabin with the specific structure is arranged between the cargo area and the living area and between the first isolation empty cabin and the ship bow warehouse.
3. 3. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 2, characterized in that, The waste heat recovery system is a supercritical carbon dioxide power generation system.
4. 4. A ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 3, The supercritical carbon dioxide power generation system is arranged on the stern side of the engine housing.
5. 5. The ship equipped with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 4, wherein, The supercritical carbon dioxide power generation system is arranged by overhead columns spaced at a predetermined height from a low deck.
6. 6. The ship equipped with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 4, wherein, The supercritical carbon dioxide power generation system includes: a heater disposed at the engine housing or the chimney to recover waste heat of exhaust gas discharged from the gas turbine to heat carbon dioxide; A turbine that rotates and generates electricity by the supercritical carbon dioxide heated by the heater; a compressor for compressing carbon dioxide; A heat exchanger for exchanging heat between the carbon dioxide recovered from the turbine and the carbon dioxide supplied from the compressor to the heater; a precooler for cooling the carbon dioxide passing through the heat exchanger from the turbine and supplying the cooled carbon dioxide to the compressor, and And a preheater for heat-exchanging and heating the exhaust gas passing through the heater with the carbon dioxide supplied from the compressor to the heater by bypassing the heat exchanger.
7. 7. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 2, characterized in that, The first fuel is ammonia gas and the second fuel is boil-off gas of liquefied natural gas generated from the cargo tank or natural gas of forced gasification liquefied natural gas.
8. 8. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 7, The cargo tank is a thin film tank.
9. 9. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 2, characterized in that, The upper surface of the second fuel tank or the upper surface defined as the second fuel tank is formed so as to conform to the height and shape of the trap deck of the cargo tank.
10. 10. The ship equipped with an electric propulsion system based on gas turbine and waste heat recovery according to claim 9, Further comprises: A fuel preparation chamber provided with an ammonia supply system for supplying ammonia gas to the gas turbine, and And a cargo oil tank compressor chamber provided with a liquefied natural gas supply system for supplying the gas turbine with a vaporized gas of liquefied natural gas or a natural gas for forcibly gasifying the liquefied natural gas.
11. 11. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 10, characterized in that, The fuel preparation chamber is disposed in an upper portion of the second fuel compartment and the cargo oil compartment compressor chamber is disposed in an upper portion of a containment deck of the cargo area.
12. 12. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 10, characterized in that, The fuel preparation chamber and the cargo tank compressor chamber are all arranged in an upper portion of the second fuel tank.
13. 13. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 10, characterized in that, The fuel preparation chamber and the cargo tank compressor chamber are all disposed above a trap deck of the cargo area.
14. 14. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 10, characterized in that, The fuel preparation chamber and the cargo tank compressor chamber are arranged separately to the port and starboard, respectively, or Is arranged offset to one of the port and starboard areas.
15. 15. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 2, characterized in that, A dual fuel generator is additionally arranged in the engine compartment, A first fuel tank for supplying fuel to the dual fuel generator is arranged below the upper deck of the bow area.
16. 16. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 15, characterized in that, A dual fuel auxiliary boiler for generating steam required in the ship is additionally arranged in the stern area.
17. 17. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 16, characterized in that, The dual fuel auxiliary boiler is arranged on a first deck, The gas turbine is arranged on a second deck, The dual fuel generator is arranged on a third deck.
18. 18. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 16, characterized in that, The dual fuel auxiliary boiler is arranged on the starboard side, The gas turbine is arranged on the port side, The dual fuel generator is arranged on the starboard side.
19. 19. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 16, characterized in that, The dual fuel auxiliary boiler is arranged on the port side, The gas turbine is arranged on the starboard side, The dual fuel generator is arranged on the port side.
20. 20. The ship provided with an electric propulsion system based on a gas turbine and waste heat recovery according to claim 16, characterized in that, The boil-off gas generated from the cargo tank is burned by an idle mode of the gas turbine, a gas burner mode of the dual fuel auxiliary boiler, or the dual fuel generator.

Description

Ship provided with electric propulsion system based on gas turbine and waste heat recovery Technical Field An embodiment of the present invention relates to a residential area bow arrangement structure of a ship for improving space utilization by arranging residential areas to a bow area, and another embodiment of the present invention relates to a ship having the same residential area bow arrangement structure for improving space utilization of a bow and a stern by arranging residential areas of a Liquefied Natural Gas (LNG) carrier to a bow area, and another embodiment of the present invention relates to a ship having an electric propulsion system based on a gas turbine and waste heat recovery for improving efficiency of a gas turbine. Background Recently, attention has been paid to ammonia NH3 that does not generate carbon dioxide in order to comply with greenhouse gases (GHC: greenhouse gas) of International maritime organization (IMO: international Maritime Organization) and IMO 2050 prescribed for carbon dioxide emission reduction. In particular, electric power is generated from a gas turbine using ammonia as a gas, and development of an electric propulsion ship using the same is being demanded. Also, in the case of applying an ammonia gas turbine in an electrically propelled ship, an engine using, as Fuel, liquefied natural gas (LNG: LIQUEFIED NATURAL GAS) or the like, as compared with conventional diesel Oil (Heavy Fuel Oil (HFO: heav Fuel Oil), light diesel Oil for a ship (MGO: MARINE GAS Oil), heavy diesel Oil for a ship (MDO: MARINE DIESEL Oil), or light diesel Oil for a low sulfur ship (LSMGO: low Sulphur MARINE GAS Oil), the sailing efficiency and safety of the ship can be maintained due to the reduction of the volume occupied inside the ship, and in constructing the ship, in order to comply with the regulations of IMO international maritime life safety convention (SOLAS: international Convention for THE SAFETY of LIFE AT SEA), rearrangement of a ship cabin or the like including a Fuel tank, a Fuel supply system, and a living area can be applied in consideration of this. Therefore, there is a need for a technique of improving space utilization of the bow and the stern and improving efficiency of the gas turbine by rearranging living areas disposed on the stern side of the cargo space of the LNG carrier while securing structural safety. Disclosure of Invention Technical problem The technical problem to be achieved by the concept of the present invention is to provide a ship having an electric propulsion system based on a gas turbine and waste heat recovery, which is capable of improving space efficiency by arranging living areas to a bow area and improving space efficiency on a containment deck by a ship having the same living area bow arrangement, and which is capable of improving efficiency of the gas turbine by burning ammonia and LNG and generating electric power by the gas turbine and recovering waste heat of the gas turbine. Technical proposal In order to achieve the above object, an embodiment of the present invention provides a ship provided with an electric propulsion system based on a gas turbine and waste heat recovery, including a stern area including a gas turbine arranged in an engine room to generate electric power and supply the electric power to an electric propulsion motor by combustion of a first fuel supplied from a second fuel tank or a second fuel supplied from a cargo oil tank, the second fuel tank being arranged in an empty space on an upper side of the engine room and having an upper end exposed to an upper deck to supply the first fuel to the gas turbine, and a waste heat recovery system to convert waste heat of waste gas from the gas turbine into electric power and supply the electric power to the electric propulsion motor. The LNG storage and transportation system further comprises a cargo area in which cargo tanks for storing and transporting LNG are arranged, and a bow area including a living area, a bow warehouse and a first isolation space of a specific structure, wherein the living area is positioned in front of the cargo area in the bow direction, is arranged at a predetermined height from an upper deck of the bow and includes a cockpit, the bow warehouse is arranged at a lower portion of the upper deck, and the first isolation space of a specific structure is arranged between the cargo area and the living area and the bow warehouse. At this time, the waste heat recovery system may be a supercritical carbon dioxide power generation system. And, the supercritical carbon dioxide power generation system may be disposed on a stern side of the engine case. In more detail, the supercritical carbon dioxide power generation system may be arranged spaced at a predetermined height from a low deck (sunken deck) by means of overhead columns. And the supercritical carbon dioxide power generation system may include a heater disposed at the engine housing or chimney to recover