EP4079622B1 - A method for switching the type of gases loaded on a ship - Google Patents

A method for switching the type of gases loaded on a ship Download PDF

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Publication number
EP4079622B1
EP4079622B1 EP20903202.8A EP20903202A EP4079622B1 EP 4079622 B1 EP4079622 B1 EP 4079622B1 EP 20903202 A EP20903202 A EP 20903202A EP 4079622 B1 EP4079622 B1 EP 4079622B1
Authority
EP
European Patent Office
Prior art keywords
tank
gas
carbon dioxide
water
ammonia
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20903202.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4079622A1 (en
EP4079622A4 (en
Inventor
Toshinori Ishida
Shinsuke Morimoto
Toshio Ogata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Shipbuilding Co Ltd
Original Assignee
Mitsubishi Shipbuilding Co Ltd
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Publication date
Application filed by Mitsubishi Shipbuilding Co Ltd filed Critical Mitsubishi Shipbuilding Co Ltd
Publication of EP4079622A1 publication Critical patent/EP4079622A1/en
Publication of EP4079622A4 publication Critical patent/EP4079622A4/en
Application granted granted Critical
Publication of EP4079622B1 publication Critical patent/EP4079622B1/en
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Anticipated expiration legal-status Critical

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/14—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed pressurised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/12—Heating; Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/043—Localisation of the removal point in the gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/046—Localisation of the filling point in the liquid
    • F17C2225/047—Localisation of the filling point in the liquid with a dip tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0121—Propulsion of the fluid by gravity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/044—Methods for emptying or filling by purging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/044—Avoiding pollution or contamination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/05—Improving chemical properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/01—Purifying the fluid
    • F17C2265/015—Purifying the fluid by separating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships

Definitions

  • the present disclosure relates to a ship.
  • a liquefied gas carrier or the like is provided with a liquefied gas storage tank.
  • a liquefied gas storage tank Such a tank may be filled with an inert gas and then the inert gas in the tank may be replaced with air or the like such that the liquefied gas remaining in the tank does not come into contact with oxygen when the tank is opened for maintenance or the like (see, for example, PTL 1).
  • the type of gas stored in the tank may be switched in the liquefied gas storage tank.
  • a problem may arise due to contact between the residual gas of a first gas stored in the tank before the switching and a second gas stored in the tank after the switching. Examples of the problem include solid generation resulting from a chemical reaction between the first gas and the second gas.
  • the first gas may be mixed with the second gas and the first gas may remain in the tank after the switching. Accordingly, in a case where the type of gas stored in the tank is switched, as in the case of the inert gas of PTL 1, the second gas needs to be loaded into the tank after the first gas in the tank is replaced with the inert gas.
  • the present disclosure has been made in view of the above, and an object of the present disclosure is to provide a ship in which the type of gas loaded into a tank can be switched with ease and speed.
  • a ship 1 of the embodiment of the present disclosure illustrated in Figs. 1 and 2 is capable of selectively carrying, for example, liquefied carbon dioxide and liquefied ammonia.
  • the ship 1 includes at least a hull 2, a tank 21, an upper supply line 32, a lower supply line 33 as a supply line, a discharge line 35, and a water tank 50.
  • the hull 2 has a pair of broadsides 3A and 3B, a ship bottom (not illustrated), and a deck 5, which form the outer shell of the hull 2.
  • the broadsides 3A and 3B are provided with a pair of broadside skins respectively forming the left and right broadsides.
  • the ship bottom (not illustrated) is provided with a ship bottom skin connecting the broadsides 3A and 3B.
  • the outer shell of the hull 2 has a U shape in a cross section orthogonal to a ship stern direction Da.
  • the deck 5 exemplified in this embodiment is a whole deck exposed to the outside.
  • an upper structure 7 having a living quarter is formed on the deck 5 on a stern 2b side.
  • a cargo loading section (hold) 8 is formed closer to a bow 2a side than the upper structure 7.
  • the cargo loading section 8 is recessed toward the ship bottom (not illustrated) below the deck 5 and is open upward.
  • a plurality of the tanks 21 are disposed in the cargo loading section 8. In this embodiment, for example, a total of seven tanks 21 are disposed in the cargo loading section 8.
  • the tank 21 is not limited in any manner in terms of layout and installation number in the cargo loading section 8.
  • each tank 21 has, for example, a cylindrical shape extending in the horizontal direction (specifically, ship stern direction) .
  • the tank 21 is not limited to a cylindrical tank and may be spherical.
  • the upper supply line 32 and the lower supply line 33 are provided in each tank 21.
  • the upper supply line 32 reaches the inside of the tank 21 from the outside of the tank 21.
  • An opening portion 32a opening to the upper portion in the tank 21 is formed at the tip of the upper supply line 32.
  • the upper portion in the tank means the region in the tank 21 that is on the side closer to the upper end of the tank 21 than the center of the tank 21 in the ship height direction (that is, the up-down direction of the tank 21).
  • the portion can be the top of the tank 21.
  • the upper supply line 32 is provided with an opening-closing valve 32v.
  • the discharge line 35 is branch-connected to the upper supply line 32.
  • the lower supply line 33 reaches the inside of the tank 21 from the outside of the tank 21.
  • An opening portion 33a opening to the lower portion in the tank 21 is formed at the tip of the lower supply line 33.
  • the lower portion in the tank 21 means the region in the tank 21 that is on the side closer to the lower end of the tank 21 than the center of the tank 21 in the ship height direction.
  • the portion can be the bottom portion of the tank 21.
  • the lower supply line 33 is provided with an opening-closing valve 33v.
  • the discharge line 35 discharges the gas stored in the tank 21 and containing at least one of ammonia and carbon dioxide to the outside of the tank 21.
  • One end side of the discharge line 35 branches from the upper supply line 32.
  • the discharge line 35 is provided with an opening-closing valve 35v.
  • the water tank 50 is provided in the hull 2 (see Fig. 1 ).
  • the water tank 50 may be, for example, a ballast tank provided in the hull 2.
  • Water W can be stored in the water tank 50.
  • the water W stored in the water tank 50 may be seawater.
  • the other end of the discharge line 35 is disposed in the water tank 50. As a result, the gas discharged from the tank 21 through the discharge line 35 is introduced into the water W in the water tank 50.
  • the water tank 50 exemplified in this embodiment is provided with a heating unit 52.
  • the heating unit 52 is configured to be capable of heating the water W in the water tank 50.
  • the component (carbon dioxide or ammonia) contained in the gas discharged from the tank may cause a chemical reaction via the water W and a substance resulting from the chemical reaction (for example, ammonium carbonate) may be dissolved in the water W in the water tank 50.
  • a substance resulting from the chemical reaction for example, ammonium carbonate
  • a separated gas discharge line 53 is connected to the water tank 50 exemplified in this embodiment.
  • the separated gas discharge line 53 the gas containing the above components separated by the heating unit 52 can be discharged to the outside of the ship.
  • Either liquefied carbon dioxide Lc or liquefied ammonia La is selectively loaded into the tank 21.
  • liquefied carbon dioxide loading into the tank 21 or liquefied ammonia loading into the tank 21 is performed as follows.
  • a pipe (not illustrated) for supplying the liquefied carbon dioxide Lc from an outboard liquefied carbon dioxide supply facility or the like is connected to the lower supply line 33.
  • the opening-closing valve 33v is opened, and the liquefied carbon dioxide Lc is sent from the outside of the ship into the lower supply line 33.
  • the liquefied carbon dioxide Lc is loaded into the tank 21 from the opening portion 33a.
  • carbon dioxide gas Gc resulting from partial vaporization of the liquefied carbon dioxide Lc is in the upper portion in the tank 21.
  • the liquefied carbon dioxide Lc may be loaded into the tank 21 through the upper supply line 32 with the opening-closing valve 32v open.
  • a pipe (not illustrated) for supplying the liquefied ammonia La from an outboard liquefied ammonia supply facility or the like is connected to the lower supply line 33.
  • the opening-closing valve 33v is opened, and the liquefied ammonia La is sent from the outside of the ship into the lower supply line 33.
  • the liquefied ammonia La is loaded into the tank 21 from the opening portion 33a.
  • ammonia gas Ga resulting from partial vaporization of the liquefied ammonia La is in the upper portion in the tank 21.
  • the liquefied ammonia La may be loaded into the tank 21 through the upper supply line 32 with the opening-closing valve 32v open.
  • the liquefied ammonia La in the tank 21 is discharged to an outboard liquefied ammonia recovery facility or the like.
  • the opening-closing valve 33v is opened and the liquefied ammonia La is suctioned out of the tank 21 through the lower supply line 33 by, for example, a cargo pump (not illustrated).
  • the liquefied ammonia La in the tank 21 is discharged to the outboard liquefied ammonia recovery facility or the like through the lower supply line 33.
  • the ammonia gas Ga remains in the tank 21 as illustrated in Fig. 4 .
  • the liquefied carbon dioxide Lc is supplied to the lower portion of the tank 21.
  • the opening-closing valve 33v is opened and the liquefied carbon dioxide Lc is sent into the lower supply line 33 from the outside of the ship.
  • the liquefied carbon dioxide Lc is loaded into the tank 21 from the opening portion 33a.
  • the liquefied carbon dioxide Lc is higher in specific gravity than the ammonia gas Ga in the tank 21. Accordingly, the liquefied carbon dioxide Lc sent into the tank 21 is stored in the lower portion of the tank 21.
  • the ammonia gas Ga is stored above the liquefied ammonia La in the tank 21.
  • the carbon dioxide gas Gc generated by the liquefied carbon dioxide Lc vaporizing also accumulates in the upper portion of the tank 21.
  • mixed gas Gm of the ammonia gas Ga and the carbon dioxide gas Gc is stored in the upper portion of the tank 21.
  • the opening-closing valve 35v provided on the discharge line 35 is opened.
  • the mixed gas Gm of the ammonia gas Ga and the carbon dioxide gas Gc in the upper portion of the tank 21 is pushed upward in the tank 21 as the amount of the liquefied carbon dioxide Lc in the tank 21 increases.
  • the mixed gas Gm flows into the upper supply line 32 from the opening portion 32a open in the upper portion in the tank 21.
  • the mixed gas Gm is introduced into the water W in the water tank 50 through the discharge line 35.
  • the ammonia gas Ga may be recovered, without being sent into the water tank 50, through the upper supply line 32 by an ammonia gas recovery facility or the like provided outside the ship.
  • the opening-closing valves 33v and 35v are closed when a predetermined amount of the liquefied carbon dioxide Lc is stored in the tank 21. As a result, the work of replacing the liquefied gas loaded into the tank 21 from the liquefied ammonia La to the liquefied carbon dioxide Lc is completed.
  • the liquefied carbon dioxide Lc in the tank 21 is discharged to an outboard liquefied carbon dioxide recovery facility or the like.
  • the opening-closing valve 33v is opened and the liquefied carbon dioxide Lc is suctioned out of the tank 21 through the lower supply line 33 by, for example, a cargo pump (not illustrated).
  • the liquefied carbon dioxide Lc in the tank 21 is discharged to the outboard liquefied carbon dioxide recovery facility or the like through the lower supply line 33.
  • the carbon dioxide gas Gc remains in the tank 21 as illustrated in Fig. 6 .
  • the liquefied ammonia La is supplied to the lower portion of the tank 21.
  • the opening-closing valve 33v is opened and the liquefied ammonia La is sent into the lower supply line 33 from the outside of the ship. Then, the liquefied ammonia La is loaded into the tank 21 from the opening portion 33a.
  • the liquefied ammonia La is higher in specific gravity than the carbon dioxide gas Gc in the tank 21. Accordingly, the liquefied ammonia La sent into the tank 21 is stored in the lower portion of the tank 21.
  • the carbon dioxide gas Gc is stored above the liquefied carbon dioxide Lc in the tank 21.
  • the ammonia gas Ga generated by the liquefied ammonia La vaporizing also accumulates in the upper portion of the tank 21. In other words, when the liquefied ammonia La is supplied into the tank 21, the mixed gas Gm of the carbon dioxide gas Gc and the ammonia gas Ga is stored in the upper portion of the tank 21.
  • the opening-closing valve 35v provided on the discharge line 35 is opened.
  • the mixed gas Gm of the carbon dioxide gas Gc and the ammonia gas Ga in the upper portion of the tank 21 is pushed upward in the tank 21 as the amount of the liquefied ammonia La in the tank 21 increases.
  • the mixed gas Gm flows into the upper supply line 32 from the opening portion 32a open in the upper portion in the tank 21.
  • the mixed gas Gm is introduced into the water W in the water tank 50 through the discharge line 35.
  • the carbon dioxide gas Gc may be recovered as it is by, for example, a carbon dioxide recovery facility provided outside the ship or may be released to the outside of the ship without being sent into the water tank 50.
  • the opening-closing valves 33v and 35v are closed when a predetermined amount of the liquefied carbon dioxide Lc is stored in the tank 21.
  • the liquefied gas loaded into the tank 21 can be replaced from the liquefied carbon dioxide Lc to the liquefied ammonia La.
  • the water W in the water tank 50 can be pyrolyzed by operating the heating unit 52.
  • the ammonium carbonate- or ammonium bicarbonate-dissolved water W is heated when the heating unit 52 is operated.
  • the water W in the water tank 50 is heated to, for example, 58°C or higher, the ammonium carbonate or ammonium bicarbonate is pyrolyzed into ammonia, carbon dioxide, and the water W.
  • These pyrolyzed ammonia and carbon dioxide are discharged to, for example, a treatment facility provided outside the ship through the separated gas discharge line 53 or the like.
  • the ship 1 of the above embodiment includes the tank 21 where one of the ammonia gas Ga and the carbon dioxide gas Gc remains (is stored), the lower supply line 33 supplying the other of the liquefied ammonia La and the liquefied carbon dioxide Lc into the tank 21, the discharge line 35 discharging the mixed gas of the ammonia gas Ga or the carbon dioxide gas Gc that remains in the tank 21 and the gas vaporized from the other of the liquefied ammonia La and the liquefied carbon dioxide Lc when the other of the liquefied ammonia La and the liquefied carbon dioxide Lc is supplied from the lower supply line 33, and the water tank 50 into which the mixed gas discharged from the discharge line 35 is introduced.
  • gas type switch can be performed even in a case where it is difficult to release the gas discharged from the tank 21 into the atmosphere.
  • the ship 1 of the above embodiment further includes the heating unit 52 heating the water W in the water tank 50 and the separated gas discharge line 53 discharging the gas separated from the water W by the heating unit 52 heating the water W.
  • the water W in the water tank 50 in which the product of a mixed gas-water chemical reaction is dissolved can be heated by the heating unit 52. Accordingly, the ammonium carbonate or ammonium bicarbonate dissolved in the water W can be pyrolyzed to separate the gas such as carbon dioxide gas and ammonia gas from the water W.
  • the gas separated from the water W in the water tank 50 can be discharged from the separated gas discharge line 53. Accordingly, the gas separated from the water W can be treated at an appropriate timing regardless of, for example, the situation of gas type switch.
  • the heating unit 52 may be provided in an outboard treatment facility or the like.
  • the water W in the water tank 50 is discharged to the outside of the ship with the component and product contained in the gas discharged from the discharge line 35 dissolved and is treated at the outboard treatment facility or the like.
  • the discharge line 35 is branch-connected to the upper supply line 32.
  • the discharge line 35 may be directly connected to the tank 21 with the upper supply line 32 omitted.
  • liquefied ammonia La or the liquefied carbon dioxide Lc is supplied into the tank 21 from the lower portion of the tank 21 by the lower supply line 33.
  • the liquefied ammonia La or the liquefied carbon dioxide Lc may be supplied into the tank 21 from, for example, the upper portion or center of the tank 21 instead of the lower portion.
  • the ship 1 described in the embodiment is, for example, grasped as follows.
  • the ship 1 in a case where the type of gas loaded into the tank 21 is switched, the other of ammonia and carbon dioxide is supplied through the supply line 33 into the tank 21 in which one of ammonia and carbon dioxide is stored. Then, the mixed gas of ammonia and carbon dioxide is discharged from the discharge line 35. The mixed gas discharged from the tank 21 is sent into the water tank 50 through the discharge line 35. As a result of contact between the mixed gas sent into the tank 21 and the water W, ammonium carbonate or ammonium bicarbonate as an example is generated as a product. This product dissolves in the water W by being introduced into the water tank 50.
  • the ship 1 according to a second aspect which is the ship 1 of (1), further includes a heating unit 52 heating the water W in the water tank 50; and a separated gas discharge line 53 discharging a gas separated from the water W by the heating unit 52 heating the water W.
  • the water W in the water tank 50 in which the product is dissolved can be heated. Accordingly, the ammonium carbonate or ammonium bicarbonate dissolved in the water W can be pyrolyzed to separate the gas such as carbon dioxide gas and ammonia gas from the water W. In addition, the gas separated from the water W in the water tank 50 can be discharged from the separated gas discharge line 53. Accordingly, the gas separated from the water W can be treated at an appropriate timing regardless of, for example, the situation of switching the type of gas in the tank 21.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
EP20903202.8A 2019-12-19 2020-09-08 A method for switching the type of gases loaded on a ship Active EP4079622B1 (en)

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JP2019228934A JP7377094B2 (ja) 2019-12-19 2019-12-19 船舶
PCT/JP2020/033961 WO2021124622A1 (ja) 2019-12-19 2020-09-08 船舶

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KR (1) KR20220093241A (zh)
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AU (1) AU2020409191B2 (zh)
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JP6934555B1 (ja) * 2020-08-25 2021-09-15 三菱造船株式会社 船舶
KR102584151B1 (ko) * 2021-07-19 2023-10-04 삼성중공업 주식회사 선박의 암모니아처리시스템
KR102538535B1 (ko) * 2021-07-27 2023-06-02 삼성중공업 주식회사 선박의 암모니아처리시스템
WO2023159266A1 (en) * 2022-02-22 2023-08-31 Tasrex Pty Ltd Shipping carbon dioxide emissions for processing and green ammonia for import/export

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DK4079622T3 (da) 2024-03-11
KR20220093241A (ko) 2022-07-05
CN114787029B (zh) 2024-02-20
JP2021095066A (ja) 2021-06-24
JP7377094B2 (ja) 2023-11-09
EP4079622A1 (en) 2022-10-26
CN114787029A (zh) 2022-07-22
EP4079622A4 (en) 2023-01-18
AU2020409191A1 (en) 2022-06-30
WO2021124622A1 (ja) 2021-06-24
AU2020409191B2 (en) 2024-05-16

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