Ammonia fuel powered container ship
Patent Information
- Application Number
- CN202521543114.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-22
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-07-22
AI Technical Summary
[0005]本实用新型的目的在于解决现有的集装箱船无法同时兼顾载货量大且满足氨气排放要求的技术问题
[0020]该氨燃料动力的集装箱船的内部沿其长度方向设置有机舱和货舱，而氨燃料动力系统位于机舱和货舱之间，并且，其沿集装箱船的宽度方向布设，以使氨燃料动力系统整体仅占据集装箱船整个船体一段较为窄小的空间，在很大程度上确保集装箱船的载货空间；同时，氨燃料动力系统能有效防止氨气聚集在集装箱船，使集装箱船在自然通风条件下能达到氨气排放要求，避免氨气在船上集聚，安全性得到很大提升。
Smart Images
Figure CN224715168U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of container ship technology, and in particular to an ammonia-fueled container ship. Background Technology
[0002] Container ships are cargo ships that carry standard containers, shortening loading and unloading time, reducing cargo damage and discrepancies, and improving operational efficiency. Currently, the International Maritime Organization (IMO) has set carbon emission reduction targets, and governments worldwide have issued carbon reduction laws; gradually achieving net-zero carbon dioxide emissions is an international consensus. Existing container ships use traditional carbon (C)-based fuels, which produce large amounts of carbon dioxide (CO2) gas upon combustion, making it impossible to meet the IMO's carbon emission reduction targets.
[0003] Ammonia can be liquefied at -33°C or 9 atmospheres, and is an inexpensive nitrogen-based compound that can be stored in ordinary liquefied petroleum gas (LPG) cylinders. Its combustion produces only water vapor (H₂O) and nitrogen (N₂), making it a novel carbon-free fuel. However, ammonia is a colorless, toxic gas with a pungent, irritating odor. As a marine fuel, its toxicity must be mitigated. Currently, common container ships, if designed to accommodate a large number of containers in their cargo holds and on deck, often suffer from insufficient natural ventilation to meet ammonia emission requirements, leading to ammonia accumulation and posing a threat to crew lives. Conversely, if natural ventilation in the cargo holds and on deck meets ammonia emission requirements, the space available for stacking containers is significantly limited.
[0004] Therefore, there is an urgent need for a container ship that can solve the above problems. Utility Model Content
[0005] The purpose of this invention is to solve the technical problem that existing container ships cannot simultaneously accommodate large cargo capacity and meet ammonia emission requirements.
[0006] To solve the above-mentioned technical problems, this utility model provides an ammonia-fueled container ship, which adopts the following technical solution:
[0007] The ammonia-fueled container ship includes an engine room and a cargo hold disposed along the length of the container ship, and an ammonia-fueled power system for preventing ammonia from accumulating inside the container ship, the ammonia-fueled power system being located between the engine room and the cargo hold and disposed along the width of the container ship.
[0008] Optionally, the length of the ammonia fuel power system is adapted to the width of the container ship, wherein the width of the ammonia fuel power system is less than the length of the ammonia fuel power system.
[0009] Optionally, the ammonia fuel power system includes an ammonia fuel tank located below the deck of the container ship and having an ammonia fuel tank, and a first refueling station, a residual liquid tank, an isolation compartment, a fuel connection compartment, a fuel preparation compartment, a second refueling station, and a bilge water tank located on the deck and arranged sequentially along the length of the container ship.
[0010] Ammonia gas generated from the first refueling station, the residual liquid tank, the fuel connection room, the fuel preparation room, the second refueling station, and the bilge water tank all flows into the isolation room. Ammonia water generated from the first refueling station and the second refueling station flows into the residual liquid tank, and ammonia water generated from the fuel connection room and the fuel preparation room flows into the bilge water tank.
[0011] Optionally, the isolation compartment includes an upper partition and a lower partition. The lower partition is provided with a plurality of first air vents and a plurality of second air vents. The first air vents are connected to exhaust pipes that pass through the upper partition to allow ammonia gas to be directly discharged outside the container ship. Each exhaust pipe is equipped with a fan at its outlet end. The second air vents are connected to vent pipes that communicate with the upper partition. The sidewall of the upper partition is provided with air holes.
[0012] The first refueling station, the fuel connection room, the fuel preparation room, and the second refueling station are each connected to the corresponding first air outlet, and the residual liquid tank and the bilge water tank are each connected to the corresponding second air outlet.
[0013] Optionally, the top of the upper compartment is provided with a vent mast that communicates with the outside of the container ship, and the fuel connection room has a connection unit. The ammonia fuel tank is connected to the vent mast through the connection unit so that the ammonia gas in the ammonia fuel tank can be discharged outside the container ship through the vent mast.
[0014] Optionally, the first refueling station, the fuel connection room, the fuel preparation room, and the second refueling station are all equipped with a water mist system and a gas detection device.
[0015] Optionally, both the first refueling station and the second refueling station are connected to the ammonia fuel tank, so that external ammonia fuel can be refueled into the ammonia fuel tank through the first refueling station and the second refueling station.
[0016] Optionally, the fuel preparation room is equipped with an ammonia fuel supply device, which is connected to the ammonia fuel tank via the pipe connection unit.
[0017] Optionally, both the first refueling station and the second refueling station are adjacent to a buffer room.
[0018] Optionally, an auxiliary equipment room is provided between the residual liquid tank and the isolation room.
[0019] Compared with the prior art, the ammonia-fueled container ship provided by this utility model has the following main advantages:
[0020] The interior of this ammonia-fueled container ship is arranged with engine room and cargo hold along its length, while the ammonia-fueled propulsion system is located between the engine room and cargo hold. Furthermore, it is arranged along the width of the container ship, so that the ammonia-fueled propulsion system occupies only a relatively narrow section of the entire hull, which largely ensures the cargo space of the container ship. At the same time, the ammonia-fueled propulsion system can effectively prevent ammonia gas from accumulating on the container ship, allowing the container ship to meet ammonia emission requirements under natural ventilation conditions, avoiding ammonia accumulation on the ship, and greatly improving safety. Attached Figure Description
[0021] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:
[0022] Figure 1 This is a schematic diagram of the arrangement of the ammonia fuel power system of a container ship on the deck in one embodiment of the present invention;
[0023] Figure 2 yes Figure 1 A longitudinal section diagram of a container ship;
[0024] Figure 3 yes Figure 1 Schematic diagram of the longitudinal section of the central isolation room.
[0025] The labels in the attached diagram are as follows:
[0026] 100. Container ship; 101. Deck;
[0027] 10. Engine room; 20. Cargo hold; 30. Ammonia fuel power system; 31. First refueling station; 311. First air duct; 32. Residual liquid tank; 321. Fifth air duct; 33. Isolation compartment; 331. Upper compartment; 332. Lower compartment; 333. First air outlet; 334. Second air outlet; 335. Exhaust pipe; 336. Fan; 337. Vent pipe; 338. Vent mast; 34. Fuel connection room; 341. Second air duct; 342. Connection unit; 35. Fuel preparation room; 351. Third air duct; 36. Second refueling station; 361. Fourth air duct; 37. Bulch water tank; 371. Sixth air duct; 38. Ammonia fuel tank; 381. Ammonia fuel tank; 39. Water mist system; 310. Gas detection device; 320. Buffer room; 330. Auxiliary equipment room. Detailed Implementation
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.
[0029] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.
[0030] In the description, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.
[0031] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0032] It should be noted that the length direction of the ammonia-fueled container ship 100 mentioned in this specification is defined as the direction of the distance between the bow and stern of the container ship 100, and the width direction is defined as the direction of the distance between the two sides of the container ship 100.
[0033] This utility model embodiment provides an ammonia-fueled container ship 100, such as... Figure 1 and Figure 2As shown, the ammonia-fueled container ship 100 includes an engine room 10 and a cargo hold 20 located inside the container ship 100. The engine room 10 and cargo hold 20 can be arranged along the length of the container ship 100, with the engine room 10 located at the stern and the cargo hold 20 located on the side closer to the bow. An ammonia-fueled propulsion system 30 can be installed between the engine room 10 and the cargo hold 20. Part of the ammonia-fueled propulsion system 30 can be located below the deck 101 of the container ship 100, and another part can be located below the deck 101. The ammonia-fueled propulsion system 30 can be arranged along the width of the container ship 100, so that the ammonia-fueled propulsion system 30 is concentrated in a relatively small area in the middle section of the container ship 100, thus occupying only a small space in the container ship 100. Furthermore, the ammonia-fueled propulsion system 30 can prevent ammonia gas from accumulating inside the container ship 100, allowing the container ship 100 to meet ammonia emission requirements even under natural ventilation conditions.
[0034] In summary, compared with existing technologies, this ammonia-fueled container ship 100 has at least the following beneficial effects:
[0035] The interior of the ammonia-fueled container ship 100 is provided with an engine room 10 and a cargo hold 20 along its length, while the ammonia-fueled power system 30 is located between the engine room 10 and the cargo hold 20. Furthermore, it is arranged along the width of the container ship 100 so that the ammonia-fueled power system 30 occupies only a small space in the middle section of the container ship 100, which largely ensures the cargo space of the container ship 100. At the same time, the ammonia-fueled power system 30 can effectively prevent ammonia gas from accumulating on the container ship 100, enabling the container ship 100 to meet ammonia emission requirements under natural ventilation conditions, avoiding ammonia gas accumulation on the ship, and greatly improving safety.
[0036] To enable those skilled in the art to better understand the present invention, the following will be described in conjunction with the appendix. Figures 1 to 3 The technical solutions in the embodiments of this utility model will be clearly and completely described.
[0037] In some embodiments, such as Figure 2 As shown, the length of the ammonia fuel power system 30 can be adapted to the width of the container ship 100, and the width of the ammonia fuel power system 30 can be less than the length of the ammonia fuel power system 30, so that the ammonia fuel power system 30 is concentrated in a small space in the middle section of the container ship 100, ensuring that the container ship 100 has enough cargo space to accommodate more containers.
[0038] Understandably, ship hulls are typically long and narrow, meaning the length of the container ship 100 is much greater than its width. Based on this, the ammonia fuel propulsion system 30 is arranged along the width of the container ship 100, making its overall length approximately equal to the width of the container ship 100. This allows the ammonia fuel propulsion system 30 to utilize the space in the width direction of the container ship 100 as much as possible. Conversely, the width of the ammonia fuel propulsion system 30 is set to be less than its length, intersecting the length of the container ship 100. Therefore, the ammonia fuel propulsion system 30 occupies only a small portion of the space in the length direction of the container ship 100, freeing up more space to accommodate containers.
[0039] In some embodiments, such as Figure 1 and Figure 2 As shown, the ammonia fuel propulsion system 30 includes an ammonia fuel tank 38 located below the deck 101, and a first refueling station 31, a residual liquid tank 32, a segregation chamber 33, a fuel connection chamber 34, a fuel preparation chamber 35, a second refueling station 36, and a bilge water tank 37, all located on the deck 101. The ammonia fuel tank 38 may have an ammonia fuel tank 381, and the ammonia fuel in the ammonia fuel tank 381 can serve as the power source for the container ship 100. The first refueling station 31, residual liquid tank 32, segregation chamber 33, fuel connection chamber 34, fuel preparation chamber 35, second refueling station 36, and bilge water tank 37 can be arranged sequentially along the length of the container ship 100, either from left to right or from right to left, depending on the actual design of the container ship 100, and are not restricted here.
[0040] Ammonia generated from the first bunkering station 31, residual liquid tank 32, fuel connection room 34, fuel preparation room 35, second bunkering station 36, and bilge water tank 37 can all flow into the isolation compartment 33 to prevent ammonia generated in the aforementioned compartments from being unable to be discharged or flowing to other locations within the container ship 100. Ammonia water generated from the first bunkering station 31 and the second bunkering station 36 can all flow into the residual liquid tank 32, and ammonia water generated from the fuel connection room 34 and the fuel preparation room 35 can all flow into the bilge water tank 37. That is, both the residual liquid tank 32 and the bilge water tank 37 can collect ammonia water to prevent ammonia water from flowing freely on the container ship 100 and causing ammonia contamination.
[0041] In some embodiments, such as Figure 3As shown, the isolation chamber 33 includes an upper partition 331 and a lower partition 332. The lower partition 332 may be provided with several first air vents 333 and several second air vents 334. The first air vents 333 may be connected to an exhaust pipe 335 that passes through the upper partition 331 to allow ammonia gas to be directly discharged outside the container ship 100. Specifically, the exhaust pipe 335 passes through the upper partition 331 from the lower partition 332, and the exhaust pipe 335 is relatively closed to the upper partition 331. The air outlet of the exhaust pipe 335 extends from the top of the upper partition 331, so that ammonia gas is discharged from the lower partition 332 through the exhaust pipe 335 and then from the air outlet outside the top of the upper partition 331 to the container ship 100. Each exhaust pipe 335 may be equipped with a fan 336 at its outlet to extract the ammonia gas inside the exhaust pipe 335 to the outside of the container ship 100. The second air vent 334 can be connected to a vent pipe 337 that communicates with the upper partition 331. The side wall of the upper partition 331 can be provided with air holes (not shown in the figure) to discharge the ammonia gas flowing into the second air vent 334 to the upper partition 331 through the vent pipe 337, and then discharge it to the outside of the container ship 100 through the air holes of the upper partition 331.
[0042] The first refueling station 31, fuel connection room 34, fuel preparation room 35, and second refueling station 36 can be connected to their respective first air vents 333, and the residual liquid tank 32 and bilge water tank 37 can be connected to their respective second air vents 334. Specifically, the first refueling station 31 is connected to one of its first air vents 333 via a first air duct 311, the fuel connection room 34 is connected to one of its first air vents 333 via a second air duct 341, the fuel preparation room 35 is connected to one of its first air vents 333 via a third air duct 351, the second refueling station 36 is connected to one of its first air vents 333 via a fourth air duct 361, the residual liquid tank 32 is connected to one of its second air vents 334 via a fifth air duct 321, and the bilge water tank 37 is connected to one of its second air vents 334 via a sixth air duct 371.
[0043] In some embodiments, such as Figure 3 As shown, a vent mast 338 communicating with the outside of the container ship 100 may be installed on the top of the upper compartment 331. A pressure relief valve may be installed on the vent mast 338. A connection unit 342 may be integrated into the top of the fuel connection compartment 34. The ammonia fuel tank 381 may be connected to the vent mast 338 through the connection unit 342, so that when the pressure of ammonia in the ammonia fuel tank 38 exceeds the set value of the pressure relief valve, the pressure relief valve will open, and the vent mast 338 can discharge ammonia outside the container ship 100.
[0044] In some embodiments, such as Figure 2As shown, a water mist system 39 and a gas detection device 310 can be installed in the first refueling station 31, the fuel connection room 34, the fuel preparation room 35, and the second refueling station 36. The water mist system 39 can combine ammonia gas with water to form ammonia water, thus liquefying the ammonia gas. The gas detection device 310 can detect whether there is an ammonia leak in the compartment it is in.
[0045] Understandably, if the gas detection device 310 of the first refueling station 31 detects an ammonia leak, the gas detection device 310 will issue a warning signal and provide feedback, triggering the water mist system 39 to work, causing the ammonia to combine with water to form ammonia water, which is then collected and transported to the residual liquid tank 32 for storage. The second refueling station 36 operates similarly to the first refueling station 31, and will not be described in detail here.
[0046] If the gas detection device 310 in the fuel connection room 34 detects an ammonia leak, it will issue a warning signal and trigger the water mist system 39 to work, causing the ammonia to combine with water to form ammonia water, which will then be collected and transported to the bilge water tank 37 for storage. The same applies to the fuel preparation room 35 as to the fuel connection room 34, and will not be described further here.
[0047] In some embodiments, both the first refueling station 31 and the second refueling station 36 can be connected to the ammonia fuel tank 38 so that external ammonia fuel (refueling ammonia fuel at the dock) can be refueled into the ammonia fuel tank 381 through the first refueling station 31 and the second refueling station 36.
[0048] In some embodiments, such as Figure 2 As shown, the fuel preparation room 35 may have an ammonia fuel supply device. The ammonia fuel supply device can be connected to the ammonia fuel tank 381 through the pipe unit 342 so that the ammonia fuel supply device can obtain ammonia fuel from the ammonia fuel tank 381 and deliver it to the ammonia fuel host to provide it with a power source.
[0049] In some embodiments, such as Figure 2 As shown, both the first refueling station 31 and the second refueling station 36 are adjacent to a buffer room 320. Personnel can enter the ammonia fuel tank 38 from the buffer room 320 to inspect and maintain the ammonia fuel tank 381. A platform is also provided between the buffer room 320 and the ammonia fuel tank 38, where personnel can rest.
[0050] In some embodiments, such as Figure 2As shown, an auxiliary equipment room 330 may be provided between the residual liquid tank 32 and the isolation chamber 33. Personnel can enter the top of the partition 331 above the isolation chamber 33 from the auxiliary equipment room 330 to maintain and repair the fans 336 on each exhaust pipe 335; conversely, they can return to the auxiliary equipment room 330 from the top of the partition 331 above the isolation chamber 33 and then leave through the escape door of the auxiliary equipment room 330, which serves as an emergency refuge and provides safety.
[0051] To better understand how the container ship 100 of this utility model achieves the required ammonia emissions under natural ventilation conditions, the working principle and overall process of the ammonia treatment system 30 of the ammonia fuel power system are briefly described below:
[0052] Ammonia fuel is supplied from the dock to the ammonia fuel tank 381 via the first refueling station 31 and the second refueling station 36. If a gas detection device 310 detects a leak during refueling, it will trigger the water mist system 39 to work, causing the ammonia gas to combine with water to form ammonia water, which is then collected and directly transported to the residual liquid tank 32 for storage. The residual ammonia gas in the first refueling station 31 and the second refueling station 36 is discharged directly outside the container ship 100 through the first air duct 311 and the fourth air duct 361, respectively. The residual ammonia gas in the residual liquid tank 32 is discharged through the fifth air duct 321 to the upper partition 331 of the isolation compartment 33, and then flows out of the container ship 100 through the vents of the upper partition 331.
[0053] The pump tower of ammonia fuel tank 381 transfers the ammonia fuel stored in the tank to the connection unit 342 in the fuel connection room 34. From there, the fuel is transported through the pipelines of connection unit 342 to the fuel supply station in the fuel preparation room 35, where it supplies ammonia fuel to the ammonia fuel engine. If the gas detection device 310 in the fuel tank connection room detects a leak during the aforementioned transfer process, it will trigger the water mist system 39 to operate, causing ammonia gas to combine with water to form ammonia water, which is then collected and directly transported to the bilge water tank 37 for storage. Residual ammonia gas in the fuel preparation room 35 is directly discharged outside the container ship 100 through the third air duct 351, and residual ammonia gas in the fuel connection room 34 is directly discharged outside the container ship 100 through the second air duct 341. Residual ammonia gas in the bilge water tank 37 is discharged through the sixth air duct 371 to the upper partition 331 of the isolation compartment 33, and then flows outside the container ship 100 through the vents of the upper partition 331.
[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.
Claims
1. A container ship powered by ammonia fuel, characterized in that, The container ship includes an engine room and a cargo hold located along its length, as well as an ammonia-fueled propulsion system for preventing ammonia buildup within the ship. The ammonia-fueled propulsion system is located between the engine room and the cargo hold and is arranged along the width of the container ship.
2. The container ship according to claim 1, characterized in that, The length of the ammonia fuel power system is adapted to the width of the container ship, and the width of the ammonia fuel power system is less than the length of the ammonia fuel power system.
3. The container ship according to claim 2, characterized in that, The ammonia fuel power system includes an ammonia fuel tank located below the deck of the container ship and having an ammonia fuel tank, and a first refueling station, a residual liquid tank, an isolation room, a fuel connection room, a fuel preparation room, a second refueling station, and a bilge water tank located on the deck and arranged sequentially along the length of the container ship. Ammonia gas generated from the first refueling station, the residual liquid tank, the fuel connection room, the fuel preparation room, the second refueling station, and the bilge water tank all flows into the isolation room. Ammonia water generated from the first refueling station and the second refueling station flows into the residual liquid tank, and ammonia water generated from the fuel connection room and the fuel preparation room flows into the bilge water tank.
4. The container ship according to claim 3, characterized in that, The isolation compartment includes an upper partition and a lower partition. The lower partition is provided with a number of first air vents and a number of second air vents. The first air vents are connected to exhaust pipes that pass through the upper partition to allow ammonia gas to be directly discharged outside the container ship. Each exhaust pipe is equipped with a fan at its outlet. The second air vents are connected to vent pipes that communicate with the upper partition. The sidewalls of the upper partition are provided with air holes. The first refueling station, the fuel connection room, the fuel preparation room, and the second refueling station are each connected to the corresponding first air outlet, and the residual liquid tank and the bilge water tank are each connected to the corresponding second air outlet.
5. The container ship according to claim 4, characterized in that, The top of the upper compartment is provided with a vent mast that communicates with the outside of the container ship. The fuel connection room has a connection unit. The ammonia fuel tank is connected to the vent mast through the connection unit so that the ammonia gas in the ammonia fuel tank can be discharged outside the container ship through the vent mast.
6. The container ship according to claim 3, characterized in that, The first refueling station, the fuel connection room, the fuel preparation room, and the second refueling station are all equipped with water mist systems and gas detection devices.
7. The container ship according to claim 3, characterized in that, Both the first refueling station and the second refueling station are connected to the ammonia fuel tank, so that external ammonia fuel can be refueled into the ammonia fuel tank through the first refueling station and the second refueling station.
8. The container ship according to claim 5, characterized in that, The fuel preparation room is equipped with an ammonia fuel supply device, which is connected to the ammonia fuel tank via the pipe connection unit.
9. The container ship according to claim 3, characterized in that, Both the first refueling station and the second refueling station are adjacent to a buffer room.
10. The container ship according to claim 3, characterized in that, An auxiliary equipment room is provided between the residual liquid tank and the isolation room.