Systems and methods for storing ammonia
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- アンモニア アーエス
- Filing Date
- 2024-02-14
- Publication Date
- 2026-06-16
Smart Images
Figure 2026519429000001_ABST
Abstract
Claims
1. A system (200,200') for safely storing ammonia below the surface of the Earth, An underground storage tank (300,300') for the storage of liquid ammonia, A safety system (400, 400') connected to the storage tank (300, 300') to control leakage from the storage tank (300, 300') and to enable the transfer of liquid ammonia into and out of the storage tank (300, 300'), A reliquefaction system (410, 410') is configured to receive boiling ammonia gas from the liquid ammonia in the storage tanks (300, 300') and liquefy it, and to send the liquefied ammonia back to the storage tanks (300, 300'), A recovery tank (420, 420') is configured to recover the liquid ammonia leaked from the safety system (400, 400') and to send the leaked liquid ammonia to the storage tank (300, 300'), A scrubber (430, 430') is configured to treat ammonia gas leaking from the aforementioned safety system (400, 400') and to send the treated gas into the atmosphere or the sea through a carbon filter, A water tank (440, 440') is connected to the scrubber (430, 430') and configured to receive contaminated water, A pre-external cooling system (450, 450') is configured to operate to pre-cool the storage tanks (300, 300') and the recovery tanks (420, 420'), A liquid ammonia transfer system (460, 460') configured to transfer liquid ammonia into and from the storage tank (300, 300'), A safety system (400, 400') equipped with, Equipped with, The reliquefaction system (410, 410') is configured to cool the storage tank (300, 300') and the recovery tank (420, 420') as a result of the liquefaction of ammonia gas. System (200, 200').
2. The system (200, 200') according to claim 1, wherein the storage tank (300, 300') is configured to withstand an internal pressure of at least 2 bar, or at least 3 bar, or at least 4 bar, or at least 5 bar, or at least 10 bar.
3. The system (200, 200') according to claim 2, wherein the reliquefaction and recovery tanks (420, 420') are configured to withstand internal pressure.
4. The aforementioned storage tank (300, 300') is 1,000 m ３ 40,000m ３ A system (200, 200') according to any of the preceding claims, having a storage capacity between 200, 200'.
5. The storage tank (300, 300') comprises walls (301, 301'), a floor (302, 302'), and a roof (303, 303'), wherein the walls (301, 301') and / or the floor (302, 302') are made of concrete, and the roof (303, 303') is made of steel, the system (200, 200') according to any of the preceding claims.
6. The system (200, 200') according to claim 5, wherein the roof (303, 303') of the storage tank (300, 300') is covered with soil.
7. The roof (303, 303') is welded or bolted to the wall (301, 301') and / or the floor (302, 302') in the system (200, 200') according to claim 5 or 6.
8. The aforementioned system (200, 200') is A first fluid communication conduit that fluidly connects to the reliquefaction system (410, 410') and the recovery tank (420, 420'), A second fluid communication conduit that fluidly connects to the recovery tank (420, 420') and the storage tank (300, 300'), Furthermore, The reliquefaction system (410, 410') is configured to cool the first fluid conduit and the second fluid conduit as a result of the liquefaction of ammonia gas. The system (200, 200') according to any of the preceding claims.
9. The system (200, 200') according to claim 8, wherein the reliquefaction system (410, 410') is configured to cool the first fluid conduit and the second fluid conduit such that the internal temperature of the first fluid conduit and the second fluid conduit is between -10 and -35°C, or approximately -20°C.
10. The water tank (440, 440') is 100m ３ 15,000m ３ A system (200, 200') according to any of the preceding claims, having a capacity between .
11. The system (200, 200') according to any of the preceding claims, further comprising a chimney (431, 431') connected to the scrubber (430, 430') to enable the release of the treated gas into the atmosphere.
12. The system (200, 200') according to any of the preceding claims, wherein the reliquefaction system (410, 410') is configured to cool the storage tank (300, 300') such that the internal temperature of the storage tank (300, 300') is between -5 and -50°C, or between -30 and -40°C.
13. The reliquefaction system (410, 410') is configured to cool the recovery tank (420, 420') such that the internal temperature of the recovery tank (420, 420') is between -10 and -35°C, or approximately -20°C, according to any of the preceding claims (200, 200').
14. The system (200, 200') according to any of the preceding claims, wherein the auxiliary external cooling system (450, 450') comprises at least one freezing pipe (451, 451') located underground in sufficient proximity to the storage tank (300, 300') such that during use the internal temperature of the storage tank (300, 300') is between -5 and -40°C or between -30 and -40°C.
15. The system (200, 200') according to claim 14, wherein the at least one freezing pipe (451, 451') is located underground within a range of 2 to 10 m, 4 to 8 m, or approximately 5 m from the storage tank (300, 300').
16. The system (200, 200') according to claim 14 or 15, wherein the at least one freezing pipe (451, 451') is located underground in sufficient proximity to the recovery tank (420, 420') so that during use the recovery tank (420, 420') the internal temperature of the recovery tank (420, 420') is between -10 and -35°C, or approximately -20°C.
17. The system (200, 200') according to claim 16, wherein the at least one freezing pipe (451, 451') is located underground within a range of 2 to 10 m, 4 to 8 m, or approximately 5 m from the recovery tank (420, 420').
18. The system according to claim 14 or 15, comprising a plurality of freezing pipes as the at least one freezing pipe (451, 451').
19. The system (200, 200') according to any one of claims 14 to 18, further comprising a removable cooling unit (452, 452') configured to connect to the at least one freezing pipe (451, 451') for cooling the at least one freezing pipe (451, 451').
20. A method for safely storing ammonia underground, A step of providing a system (200, 200') according to any one of claims 1 to 19, The steps include supplying a certain amount of liquid ammonia to the storage tank (300, 300'), The liquid ammonia in the storage tank (300, 300') receives the boiled ammonia gas and liquefies it, and the liquefied ammonia is sent to the storage tank (300, 300'), and The storage tank (300, 300') and the recovery tank (420, 420') are cooled as a result of the liquefaction of ammonia gas, The steps include operating the aforementioned reliquefaction system (410, 410'), A method that includes this.
21. The steps include: recovering the liquid ammonia leaked from the safety system (400, 400') into the recovery tank (420, 420'), and sending the leaked liquid ammonia to the storage tank (300, 300'); The method of claim 20, further comprising:
22. The steps include treating the ammonia gas leaking from the safety system (400, 400') in a scrubber (430, 430'), and sending the treated gas into the atmosphere or the sea through a carbon filter, The steps include recovering contaminated water from the scrubbers (430, 430') into the water tanks (440, 440'), The method of claim 20 or 21, further comprising the above.
23. The method according to any one of claims 20 to 22, further comprising the step of operating the auxiliary external cooling system (450, 450') to cool the storage tank (300, 300') and the recovery tank (420, 420').
24. The method according to any one of claims 20 to 23, further comprising the step of transferring liquid ammonia into or from the storage tank (300, 300') using the liquid ammonia transfer system (460, 460').