EP4194329A1 - Schwimmkörper, verfahren zum laden von verflüssigtem kohlendioxid und verfahren zum entladen von verflüssigtem kohlendioxid - Google Patents

Schwimmkörper, verfahren zum laden von verflüssigtem kohlendioxid und verfahren zum entladen von verflüssigtem kohlendioxid Download PDF

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Publication number
EP4194329A1
EP4194329A1 EP21886353.8A EP21886353A EP4194329A1 EP 4194329 A1 EP4194329 A1 EP 4194329A1 EP 21886353 A EP21886353 A EP 21886353A EP 4194329 A1 EP4194329 A1 EP 4194329A1
Authority
EP
European Patent Office
Prior art keywords
tank
carbon dioxide
pipe
liquefied carbon
loading
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.)
Pending
Application number
EP21886353.8A
Other languages
English (en)
French (fr)
Other versions
EP4194329A4 (de
Inventor
Kazuya Abe
Shinsuke Morimoto
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Shipbuilding Co Ltd filed Critical Mitsubishi Shipbuilding Co Ltd
Publication of EP4194329A1 publication Critical patent/EP4194329A1/de
Publication of EP4194329A4 publication Critical patent/EP4194329A4/de
Pending legal-status Critical Current

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    • 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
    • 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
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • 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
    • F17C2201/01—Shape
    • F17C2201/0128—Shape spherical or elliptical
    • 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
    • F17C2201/0147—Shape complex
    • F17C2201/0157—Polygonal
    • 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
    • F17C2201/052—Size large (>1000 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
    • F17C2205/0138—Two or more vessels characterised by the presence of fluid connection between vessels bundled in series
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • 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
    • 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
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0192—Three-phase, e.g. CO2 at triple point
    • 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
    • F17C2223/046—Localisation of the removal point in the liquid
    • F17C2223/047—Localisation of the removal 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
    • 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
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0171—Arrangement
    • F17C2227/0178—Arrangement in the vessel
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • F17C2260/026—Improving properties related to fluid or fluid transfer by calculation
    • 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
    • F17C2260/03—Dealing with losses
    • F17C2260/031—Dealing with losses due to heat transfer
    • F17C2260/032—Avoiding freezing or defrosting
    • 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
    • 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
    • F17C2270/011—Barges
    • F17C2270/0113—Barges floating

Definitions

  • the present disclosure relates to a floating structure, a method for loading liquefied carbon dioxide, and a method for unloading liquefied carbon dioxide.
  • the fuel tank disclosed in PTL 1 discloses a configuration including a loading pipe (pipeline) for loading a liquefied gas (liquefied natural gas (LNG)) into the fuel tank.
  • a loading pipe pipeline
  • LNG liquefied natural gas
  • the pressure of the liquefied carbon dioxide at the lower end of the loading pipe or the unloading pipe that opens in the tank corresponds to the tank operating pressure.
  • the pipe top at the highest position in the loading pipe or the unloading pipe is positioned above the highest liquid level in the tank.
  • the pressure of the liquefied carbon dioxide at the pipe top is lower than the pressure of the liquefied carbon dioxide at the lower end of the pipe by the amount corresponding to the head pressure due to the height difference between the liquid surface of the liquefied carbon dioxide in the tank and the pipe top. That is, in the loading pipe or the unloading pipe, the pressure of the liquefied carbon dioxide at the pipe top is lower than the pressure of the liquefied carbon dioxide in the tank.
  • the pressure at the triple point where the gas phase, the liquid phase, and the solid phase coexist is higher than the triple point pressure of LNG or LPG, and the difference from the tank operating pressure during operation is small.
  • the pressure of the liquefied carbon dioxide may become equal to or less than the triple point pressure at the pipe top where the pressure of the liquefied carbon dioxide is the lowest, and the flash evaporation of the liquefied carbon dioxide may occur.
  • the present disclosure is made in order to solve the above problems, and an object thereof is to provide a floating structure, a method for loading liquefied carbon dioxide, and a method for unloading liquefied carbon dioxide that can suppress the formation of dry ice in a pipe and smoothly perform loading and unloading work of liquefied carbon dioxide.
  • the floating structure includes a floating main structure, a tank, and a loading pipe.
  • the tank is disposed in the floating main structure.
  • the tank is capable of storing liquefied carbon dioxide.
  • the loading pipe discharges liquefied carbon dioxide supplied from an outside into the tank.
  • the loading pipe includes a first loading pipe and a second loading pipe.
  • the first loading pipe is disposed outside the tank.
  • the first loading pipe has a first inner diameter.
  • the second loading pipe has one end connected to the first loading pipe, and the other end open inside the tank.
  • the second loading pipe has a second inner diameter smaller than the first inner diameter.
  • the floating structure includes a floating main structure, a plurality of tanks, an unloading pipe, and a transfer pipe.
  • the tank is disposed in the floating main structure.
  • the tank is capable of storing liquefied carbon dioxide.
  • the unloading pipe is provided in each of the plurality of tanks.
  • the unloading pipe delivers liquefied carbon dioxide in the tank to an outside of the floating main structure.
  • the transfer pipe is disposed to straddle between the first tank and the second tank.
  • the transfer pipe allows an inside of the first tank and an inside of the second tank to communicate with each other.
  • the transfer pipe includes a first transfer pipe and a second transfer pipe.
  • the first transfer pipe is disposed on a first tank side.
  • the transfer pipe has a first inner diameter.
  • the second transfer pipe has one end connected to the first transfer pipe, and the other end open inside the second tank.
  • the second transfer pipe has a second inner diameter smaller than the first inner diameter.
  • a method for loading liquefied carbon dioxide according to the present disclosure is a method for loading liquefied carbon dioxide in the floating structure described above.
  • the method for loading liquefied carbon dioxide includes: a step of loading liquefied carbon dioxide into the tank from the first loading pipe through the second loading pipe; and a step of loading liquefied carbon dioxide into the tank from the first loading pipe through the third loading pipe when a liquid level of liquefied carbon dioxide in the tank reaches a predetermined liquid level.
  • a method for unloading liquefied carbon dioxide according to the present disclosure is a method for unloading liquefied carbon dioxide in the floating structure described above.
  • the method for unloading liquefied carbon dioxide includes: a step of transferring liquefied carbon dioxide in the first tank from the first transfer pipe into the second tank through the second transfer pipe by pressurizing the inside of the first tank; a step of transferring liquefied carbon dioxide in the first tank from the first transfer pipe into the second tank through the third transfer pipe when a liquid level of liquefied carbon dioxide in the second tank reaches a predetermined liquid level; and a step of delivering the liquefied carbon dioxide in the second tank to an outside of the second tank by the unloading pipe.
  • the method for loading liquefied carbon dioxide, and the method for unloading liquefied carbon dioxide according to the present disclosure it is possible to suppress the formation of dry ice in the pipe and smoothly perform the loading and unloading work.
  • a ship 1 which is a floating structure carries liquefied carbon dioxide.
  • the ship 1 includes at least a hull 2 as a floating main structure and a tank facility 10A.
  • the hull 2 has a pair of sides 3A and 3B, a bottom (not shown), and an upper deck 5, which form an outer shell thereof.
  • the sides 3A and 3B each have a pair of side shell platings which form the left and right sides.
  • the bottom (not shown) has a bottom shell plating connecting the sides 3A and 3B to each other. Due to the pair of sides 3A and 3B and the bottom (not shown), the outer shell of the hull 2 has a U-shape in a cross section orthogonal to a stem-stern direction Da.
  • the upper deck 5 shown in this embodiment is a continuous deck exposed to the outside.
  • a superstructure 7 having an accommodation space is formed on the upper deck 5 on a stern 2b side.
  • a cargo tank storage compartment (hold) 8 is formed on a stem 2a side of the superstructure 7.
  • the cargo tank storage compartment 8 is recessed toward the bottom below the upper deck 5, and is open upward.
  • a plurality of tank facilities 10A are disposed in the cargo tank storage compartment 8 along the stem-stern direction Da.
  • two tank facilities 10A are disposed at intervals in the stem-stern direction Da.
  • the tank facility 10A includes at least a tank 11, a loading pipe 20A, and an unloading pipe 30.
  • the tank 11 is disposed on the hull 2.
  • the tank 11 has, for example, a cylindrical shape extending in the horizontal direction.
  • the tank 11 accommodates a liquefied carbon dioxide L inside thereof.
  • the tank main body includes a tubular portion 12 and an end spherical portion 13.
  • the tubular portion 12 extends in the horizontal direction as a longitudinal direction Dx.
  • the tubular portion 12 is formed in a cylindrical shape having a circular cross-sectional shape orthogonal to the longitudinal direction Dx.
  • the end spherical portions 13 are respectively disposed at both end portions of the tubular portion 12 in the longitudinal direction Dx.
  • Each of the end spherical portions 13 has a hemispherical shape and blocks the openings at both ends of the tubular portion 12 in the longitudinal direction Dx.
  • the tank 11 is not limited to a cylindrical shape, and the tank 11 may have a spherical shape, a square shape, or the like.
  • the loading pipe 20A loads the liquefied carbon dioxide L supplied from the outside of the ship, such as an on-land liquefied carbon dioxide supply facility, into the tank 11.
  • the loading pipe 20A includes a first loading pipe 21 and a second loading pipe 22.
  • the first loading pipe 21 is detachably connected to a supply pipe (not shown) to which liquefied carbon dioxide is supplied from the liquefied carbon dioxide supply facility or the like on the outside of the ship.
  • the first loading pipe 21 is disposed outside the tank 11.
  • the first loading pipe 21 in this embodiment extends in the horizontal direction above the tank 11 in a vertical direction Dv.
  • the first loading pipe 21 has a first inner diameter D1.
  • One end 22a (in other words, the upper end in the vertical direction Dv) of the second loading pipe 22 is connected to the first loading pipe 21.
  • the second loading pipe 22 penetrates the top of the tank 11 and extends from the outside to the inside of the tank 11.
  • the second loading pipe 22 extends in the vertical direction Dv inside the tank 11.
  • the other end 22b (in other words, the lower end in the vertical direction Dv) of the second loading pipe 22 is open downward in the lower portion of the tank 11.
  • the second loading pipe 22 has a second inner diameter D2 that is smaller than the first inner diameter D1.
  • the second loading pipe 22 has the second inner diameter D2 over the entire length thereof.
  • only a constant length on the other end 22b side may be formed by the second inner diameter D2, and the one end 22a side may be formed by the same first inner diameter D1 as the first loading pipe 21.
  • the unloading pipe 30 delivers the liquefied carbon dioxide L in the tank 11 to the outside of the ship such as an on-land liquefied carbon dioxide supply facility.
  • the unloading pipe 30 penetrates the top of the tank 11 from the outside of the tank 11 and extends to the inside of the tank 11.
  • the tip portion of the unloading pipe 30 is disposed in the lower portion inside the tank 11.
  • a pump 31 is provided at the tip portion of the unloading pipe 30.
  • the pump 31 sucks in the liquefied carbon dioxide L in the tank 11.
  • the unloading pipe 30 delivers the liquefied carbon dioxide L sucked by the pump 31 to the outside of the tank 11 (the outside of the ship).
  • the liquefied carbon dioxide L is loaded into the tank 11 from the first loading pipe 21 through the second loading pipe 22.
  • the second inner diameter D2 of the second loading pipe 22 is smaller than the first inner diameter D1 of the first loading pipe 21. Therefore, a pressure loss ⁇ P in the second loading pipe 22 is greater than that in the first loading pipe 21.
  • a pressure P L of the liquefied carbon dioxide L at the pipe top of the loading pipe 20A is expressed by the following equation (1).
  • P L P T ⁇ ⁇ g h 2 ⁇ h 1 / 1000 + ⁇ P
  • the pressure (P L ) of the liquefied carbon dioxide L at the pipe top of the loading pipe 20A is increased by the amount of the pressure loss ⁇ P. Since the pressure of the liquefied carbon dioxide L at the pipe top of the loading pipe 20A is increased, it is possible to suppress the approach of the pressure of the liquefied carbon dioxide L to the triple point pressure. As a result, the solidification of the liquefied carbon dioxide L and the formation of dry ice in the loading pipe 20A are suppressed. As a result, in a case where the liquefied carbon dioxide L is accommodated in the tank 11, it is possible to suppress the formation of dry ice in the loading pipe 20A and smoothly perform the loading work.
  • the second embodiment of the floating structure and the method for loading liquefied carbon dioxide according to the present disclosure will be described.
  • the second embodiment described below is different from the first embodiment only in the configuration including a third loading pipe 23, and thus the same parts as those in the first embodiment will be given the same reference numerals, and the redundant description will be omitted.
  • a tank facility 10B includes at least the tank 11, a loading pipe 20B, and the unloading pipe 30.
  • the loading pipe 20B loads the liquefied carbon dioxide L supplied from the outside of the ship, such as an on-land liquefied carbon dioxide supply facility, into the tank 11.
  • the loading pipe 20B includes the first loading pipe 21, the second loading pipe 22, and the third loading pipe 23.
  • the first loading pipe 21 is detachably connected to a supply pipe (not shown) to which liquefied carbon dioxide is supplied from the liquefied carbon dioxide supply facility or the like on the outside of the ship.
  • the first loading pipe 21 is disposed outside the tank 11. Similar to the first embodiment, the first loading pipe 21 extends in the horizontal direction above the tank 11 in the vertical direction Dv.
  • the first loading pipe 21 has a first inner diameter D1.
  • One end 22a (in other words, the upper end in the vertical direction Dv) of the second loading pipe 22 is connected to the first loading pipe 21.
  • the second loading pipe 22 penetrates the top of the tank 11 and extends from the outside to the inside of the tank 11.
  • the second loading pipe 22 extends in the vertical direction Dv inside the tank 11.
  • the other end 22b (in other words, the upper end in the vertical direction Dv) of the second loading pipe 22 is open downward in the lower portion of the tank 11.
  • the second loading pipe 22 has a second inner diameter D2 that is smaller than the first inner diameter D1.
  • a base 23a (in other words, the upper end in the vertical direction Dv) of the third loading pipe 23 is connected to the first loading pipe 21.
  • the third loading pipe 23 penetrates the top of the tank 11 and extends from the outside to the inside of the tank 11.
  • the third loading pipe 23 extends in the vertical direction Dv inside the tank 11.
  • a tip 23b (in other words, the lower end in the vertical direction Dv) of the third loading pipe 23 is open downward in the lower portion of the tank 11.
  • the third loading pipe 23 has a third inner diameter D3 that is greater than the second inner diameter D2.
  • the third inner diameter D3 may be the same as the first inner diameter D1 of the first loading pipe 21.
  • An opening-closing valve 24 is provided in the second loading pipe 22.
  • the opening-closing valve 24 opens and closes the second loading pipe 22.
  • the opening-closing valve 25 is provided in the third loading pipe 23.
  • the opening-closing valve 25 opens and closes the third loading pipe 23.
  • a method S1 for loading liquefied carbon dioxide includes a step S2 of loading the liquefied carbon dioxide L through the second loading pipe 22; and a step S3 of loading the liquefied carbon dioxide L through the third loading pipe 23.
  • the opening-closing valve 24 is opened and the opening-closing valve 25 is closed.
  • the first loading pipe 21 and the second loading pipe 22 are in a state of being communicated with each other.
  • the liquefied carbon dioxide L supplied from the outside of the ship is fed from the first loading pipe 21 into the tank 11 through the second loading pipe 22.
  • the second inner diameter D2 of the second loading pipe 22 is smaller than the first inner diameter D1 of the first loading pipe 21. Therefore, the pressure loss ⁇ P in the second loading pipe 22 becomes large, and the liquefied carbon dioxide L is loaded while suppressing the formation of dry ice in the loading pipe 20A.
  • the process is shifted to the step S3 of loading the liquefied carbon dioxide L through the third loading pipe 23.
  • the opening-closing valve 24 is closed and the opening-closing valve 25 is opened.
  • the first loading pipe 21 and the third loading pipe 23 are in a state of being communicated with each other.
  • the differential pressure between the liquefied carbon dioxide L in the tank 11 and the pipe top of the loading pipe 20B becomes smaller. As a result, the liquefied carbon dioxide L is unlikely to solidify at the pipe top of the loading pipe 20B.
  • the liquefied carbon dioxide L supplied from the outside of the ship can be fed from the first loading pipe 21 into the tank 11 through the third loading pipe 23.
  • the third inner diameter D3 of the third loading pipe 23 is greater than the second inner diameter D2 of the second loading pipe 22. Therefore, compared to the step S2, the flow rate of the liquefied carbon dioxide L supplied into the tank 11 through the third loading pipe 23 can be increased.
  • the liquefied carbon dioxide L is loaded from the first loading pipe 21 into the tank 11 through the second loading pipe 22. Since the second inner diameter D2 of the second loading pipe 22 is smaller than the first inner diameter D1 of the first loading pipe 21, the pressure loss ⁇ P formed in the second loading pipe 22 increases the pressure of the liquefied carbon dioxide L at the pipe top of the loading pipe 20B. As a result, it is possible to suppress the solidification of the liquefied carbon dioxide L in the loading pipe 20B and the formation of dry ice. As a result, in a case where the liquefied carbon dioxide L is accommodated in the tank 11, it is possible to suppress the formation of dry ice in the loading pipe 20B and smoothly perform the loading work.
  • the liquefied carbon dioxide L in the tank 11 rises and reaches the specified liquid level, the liquefied carbon dioxide L is loaded into the tank 11 through the third loading pipe 23. As a result, the liquefied carbon dioxide L can be loaded in a short period of time.
  • the tank facility 10C includes at least a plurality of tanks 11, a loading pipe 20C, the unloading pipe 30, and a transfer pipe 40C.
  • the loading pipe 20C loads the liquefied carbon dioxide L supplied from the outside of the ship, such as an on-land liquefied carbon dioxide supply facility, into the tank 11.
  • the loading pipes 20C of the third embodiment are provided one by one in each of the plurality of tanks 11.
  • the unloading pipe 30 delivers the liquefied carbon dioxide L in each of the tanks 11 to the outside of the ship such as an on-land liquefied carbon dioxide supply facility.
  • the unloading pipe 30 penetrates the top of the tank 11 from the outside of the tank 11 and extends to the inside of the tank 11.
  • the tip portion of the unloading pipe 30 is disposed in the lower portion inside the tank 11.
  • the pump 31 is provided at the tip portion of the unloading pipe 30.
  • the pump 31 sucks in the liquefied carbon dioxide L in the tank 11.
  • the unloading pipe 30 delivers the liquefied carbon dioxide L sucked by the pump 31 to the outside of the tank 11 (the outside of the ship).
  • the unloading pipes 30 of the third embodiment are provided one by one in each of the plurality of tanks 11.
  • the unloading pipes 30 of the third embodiment are provided one by one in each of the plurality of tanks 11.
  • a case where two tanks 11, a first tank 11P and a second tank 11Q are provided as the plurality of tanks 11 will be described as an example.
  • the transfer pipe 40C is disposed to straddle between the first tank 11P and the second tank 11Q.
  • the inside of the first tank 11P and the inside of the second tank 11Q communicate with each other through the transfer pipe 40C.
  • the transfer pipe 40C makes it possible to transfer the liquefied carbon dioxide L from the first tank 11P to the second tank 11Q.
  • the transfer pipe 40C includes a first transfer pipe 41 and a second transfer pipe 42.
  • the first transfer pipe 41 is disposed on the first tank 11P side.
  • a first end 41a of the first transfer pipe 41 is inserted into the first tank 11P and is open downward in the lower portion of the first tank 11P.
  • the first transfer pipe 41 extends upward from the first end 41a and reaches the outside of the first tank 11P.
  • An intermediate portion 41b disposed on the outside of both the first tank 11P and the second tank 11Q in the first transfer pipe 41 extends in the horizontal direction above the first tank 11P and the second tank 11Q.
  • the first transfer pipe 41 has a first inner diameter D11.
  • the second transfer pipe 42 penetrates the top of the second tank 11Q and extends from the outside to the inside of the second tank 11Q.
  • the second transfer pipe 42 extends in the vertical direction Dv in the second tank 11Q.
  • the other end 42b of the second transfer pipe 42 is open downward in the lower portion of the second tank 11Q.
  • the second transfer pipe 42 has a second inner diameter D12 that is smaller than the first inner diameter D11.
  • the second transfer pipe 42 has the second inner diameter D12 over the entire length thereof. In the second transfer pipe 42, only a constant length on the other end 42b side may be formed by the second inner diameter D12, and the one end 42a side may be formed by the same first inner diameter D11 as the first transfer pipe 41.
  • An opening-closing valve 45 is provided in the transfer pipe 40C.
  • the opening-closing valve 45 opens and closes the transfer pipe 40C.
  • the opening-closing valve 45 is normally closed.
  • each tank 11 (first tank 11P, second tank 11Q)
  • the pump 31 provided in the unloading pipe 30 is operated in each tank 11. Then, the liquefied carbon dioxide L in the tank 11 is sucked by the pump 31, and is delivered to the outside of the ship through the unloading pipe 30.
  • the opening-closing valve 45 is opened. Then, the inside of the first tank 11P and the inside of the second tank 11Q communicate with each other through the transfer pipe 40C.
  • a pressurizing gas Gp for example, boil-off gas
  • a pressurizing gas pipe not shown. Then, the pressure of the gas phase in the first tank 11P is increased, and the liquefied carbon dioxide L in the first tank 11P is pressurized.
  • the liquefied carbon dioxide L in the first tank 11P is fed into the second tank 11Q through the transfer pipe 40C (first transfer pipe 41, second transfer pipe 42).
  • the liquefied carbon dioxide L transferred from the first tank 11P into the second tank 11Q is delivered to the outside of the ship through the unloading pipe 30 by the pump 31 provided in the unloading pipe 30 of the second tank 11Q.
  • the liquefied carbon dioxide L is transferred from the first tank 11P to the second tank 11Q through the second transfer pipe 42 from the first transfer pipe 41.
  • the liquefied carbon dioxide L transferred to the second tank 11Q is delivered to the outside through the unloading pipe 30 of the second tank 11Q. In this manner, even when the unloading work cannot be performed in the unloading pipe 30 of the first tank 11P, the liquefied carbon dioxide L in the first tank 11P can be unloaded on the outside through the second tank 11Q.
  • the pressure loss ⁇ P of the second transfer pipe 42 is greater than that of the first transfer pipe 41, and the pressure of the liquefied carbon dioxide L flowing through the transfer pipe 40C can be increased by the amount corresponding to the pressure loss ⁇ P. Therefore, the pressure of the liquefied carbon dioxide L at the pipe top of the transfer pipe 40C is increased, and it is possible to suppress the approach of the pressure of the liquefied carbon dioxide L to the triple point pressure. As a result, the solidification of the liquefied carbon dioxide L and the formation of dry ice in the transfer pipe 40C are suppressed.
  • the fourth embodiment of the floating structure and the method for unloading liquefied carbon dioxide according to the present disclosure will be described.
  • the fourth embodiment described below is different from the third embodiment only in the configuration including a third transfer pipe 43, and thus the same parts as those in the third embodiment will be given the same reference numerals, and the redundant description will be omitted.
  • the tank facility 10D includes at least the plurality of tanks 11, the plurality of loading pipes 20C, the plurality of unloading pipes 30, and a transfer pipe 40D. Even in the fourth embodiment, a case where there are two tanks 11 (first tank 11P, second tank 11Q) will be described as an example.
  • the transfer pipe 40D is disposed to straddle between the first tank 11P and the second tank 11Q.
  • the transfer pipe 40D transfers the liquefied carbon dioxide L from the first tank 11P to the second tank 11Q.
  • the transfer pipe 40D includes the first transfer pipe 41, the second transfer pipe 42, and the third transfer pipe 43.
  • the first transfer pipe 41 is disposed on the first tank 11P side. A first end 41a of the first transfer pipe 41 is inserted into the first tank 11P and is open downward in the lower portion of the first tank 11P. The intermediate portion 41b disposed on the outside of both the first tank 11P and the second tank 11Q in the first transfer pipe 41 extends in the horizontal direction above the first tank 11P and the second tank 11Q.
  • the first transfer pipe 41 has a first inner diameter D11.
  • the one end 42a (in other words, the upper end in the vertical direction Dv) of the second transfer pipe 42 is connected to the first transfer pipe 41.
  • the second transfer pipe 42 penetrates the top of the second tank 11Q and extends from the outside to the inside of the second tank 11Q.
  • the second transfer pipe 42 extends in the vertical direction Dv in the second tank 11Q.
  • the other end 42b of the second transfer pipe 42 is open downward in the lower portion of the second tank 11Q.
  • the second transfer pipe 42 has a second inner diameter D12 that is smaller than the first inner diameter D11.
  • a base 43a (in other words, the upper end in the vertical direction Dv) of the third transfer pipe 43 is connected to the first transfer pipe 41.
  • the third transfer pipe 43 penetrates the top of the second tank 11Q and extends from the outside to the inside of the second tank 11Q.
  • the third transfer pipe 43 extends in the vertical direction Dv in the second tank 11Q.
  • a tip 43b (in other words, the lower end in the vertical direction Dv) of the third transfer pipe 43 is open downward in the lower portion of the tank 11.
  • the third transfer pipe 43 has a third inner diameter D13 that is greater than the second inner diameter D2.
  • the third inner diameter D13 may be the same as the first inner diameter D11 of the first transfer pipe 41.
  • An opening-closing valve 46 is provided in the second transfer pipe 42.
  • the opening-closing valve 46 opens and closes the second transfer pipe 42.
  • An opening-closing valve 47 is provided in the third transfer pipe 43. The opening-closing valve 47 opens and closes the third transfer pipe 43. The opening-closing valves 46 and 47 are normally closed.
  • each tank when the liquefied carbon dioxide L in the tank 11 is unloaded, the pump 31 provided in the unloading pipe 30 is operated in each tank 11. Then, the liquefied carbon dioxide L in the tank 11 is sucked by the pump 31, and is delivered to the outside of the ship through the unloading pipe 30.
  • the method S11 for unloading liquefied carbon dioxide includes a step S12 of transferring the liquefied carbon dioxide L through the second transfer pipe 42, a step S13 of transferring the liquefied carbon dioxide L through the third transfer pipe 43, and a step S14 of delivering the liquefied carbon dioxide L to the outside.
  • the opening-closing valve 46 is opened and the opening-closing valve 47 is closed.
  • the first transfer pipe 41 and the second transfer pipe 42 are in a state of being communicated with each other.
  • the pressurizing gas Gp the boil-off gas in a tank other than the first tank 11P (for example, the second tank 11Q) is introduced into the first tank 11P through a pressurizing gas pipe (not shown).
  • the pressure of the gas phase in the first tank 11P increases, and a pressure difference between the pressure of the gas phase in the first tank 11P and the pressure of the gas phase in the second tank 11Q occurs.
  • the liquefied carbon dioxide L in the first tank 11P is fed into the second tank 11Q through the first transfer pipe 41 and the second transfer pipe 42.
  • the second inner diameter D2 of the second transfer pipe 42 is smaller than the first inner diameter D1 of the first transfer pipe 41. Therefore, the pressure loss ⁇ P in the second transfer pipe 42 becomes large, and the liquefied carbon dioxide L is loaded while suppressing the formation of dry ice in the transfer pipe 40D.
  • the step S13 is performed in such a state.
  • the liquefied carbon dioxide L in the first tank 11P is transferred into the second tank 11Q from the first transfer pipe 41 through the third transfer pipe 43 using the pressurizing gas Gp in the same manner as described above.
  • the third inner diameter D3 of the third transfer pipe 43 is greater than the second inner diameter D2 of the second transfer pipe 42. Therefore, compared to the step S12, the flow rate of the liquefied carbon dioxide L supplied into the second tank 11Q through the third transfer pipe 43 can be increased.
  • step S14 of delivering the liquefied carbon dioxide L to the outside of the second tank 11Q the liquefied carbon dioxide L in the second tank 11Q is delivered to the outside of the tank 11 by the unloading pipe 30.
  • the step S14 may be performed in parallel with the above steps S12 and S13.
  • the liquefied carbon dioxide L is transferred from the first tank 11P to the second tank 11Q through the second transfer pipe 42, and accordingly, the solidification of the liquefied carbon dioxide L and the formation of dry ice in the transfer pipe 40D are suppressed.
  • the liquefied carbon dioxide L in the second tank 11Q rises, the differential pressure between the liquefied carbon dioxide L in the second tank 11Q and the pipe top of the transfer pipe 40D becomes small, and the liquefied carbon dioxide L is unlikely to solidify at the pipe top, the liquefied carbon dioxide L is transferred from the first tank 11P to the second tank 11Q through the third transfer pipe 43. Accordingly, the liquefied carbon dioxide L can be transferred in a short period of time.
  • the configuration is provided with two tanks 11, but the number and arrangement of the tanks 11 are not limited thereto. Three or more tanks 11 may be provided. Further, in each of the above embodiments, a case where the plurality of tanks 11 are disposed side by side in the stem-stern direction Da has been shown. However, the tanks 11 may be disposed side by side in the ship width direction (in other words, the left-right side direction).
  • the ship 1 is exemplified as the floating structure, but the present disclosure is not limited thereto.
  • the floating structure may be an offshore floating structure facility that does not include a propulsion mechanism.
  • the floating structure 1, the method for loading the liquefied carbon dioxide L, and the method for unloading the liquefied carbon dioxide L described in each embodiment are ascertained as follows, for example.
  • Examples of the floating structure 1 include a ship and an offshore floating structure facility.
  • Examples of the floating main structure 2 include the floating main structure 2 of a hull or an offshore floating structure facility.
  • the liquefied carbon dioxide L is loaded into the tank 11 from the first loading pipe 21 through the second loading pipe 22.
  • the second inner diameter D2 of the second loading pipe 22 is smaller than the first inner diameter D1 of the first loading pipe 21. Therefore, a pressure loss ⁇ P in the second loading pipe 22 is greater than that in the first loading pipe 21.
  • the pressure of the liquefied carbon dioxide L flowing through the loading pipes 20A and 20B is increased by the amount of the pressure loss ⁇ P. Since the pressure of the liquefied carbon dioxide L at the pipe tops of the loading pipes 20A and 20B is increased, it is possible to suppress the approach of the pressure of the liquefied carbon dioxide L to the triple point pressure.
  • the loading pipe 20B further includes the third loading pipe 23 having the base 23a connected to the first loading pipe 21, the tip 23b open inside the tank 11, and the third inner diameter D3 greater than the second inner diameter D2.
  • the liquefied carbon dioxide L when the liquefied carbon dioxide L is loaded into the tank 11 through the third loading pipe 23 having the third inner diameter D3 greater than the second loading pipe 22, the liquefied carbon dioxide L can be loaded in a short period of time.
  • the floating structure 1 including: the floating main structure 2; the plurality of tanks 11 disposed in the floating main structure 2 and capable of storing the liquefied carbon dioxide L; the unloading pipe 30 provided in each of the plurality of tanks 11 for delivering the liquefied carbon dioxide L in the tank 11 to the outside of the floating main structure 2; and the transfer pipes 40C and 40D disposed to straddle between the first tank 11P and the second tank 11Q that form the plurality of tanks 11 and allowing the inside of the first tank 11P and the inside of the second tank 11Q to communicate with each other, in which the transfer pipes 40C and 40D include the first transfer pipe 41 disposed on the first tank 11P side and having the first inner diameter D11, and the second transfer pipe 42 having the one end 42a connected to the first transfer pipe 41, the other end 42b open inside the second tank 11Q, and the second inner diameter D12 smaller than the first inner diameter D11.
  • the transfer pipes 40C and 40D make it possible to transfer the liquefied carbon dioxide L from the first tank 11P to the second tank 11Q.
  • the liquefied carbon dioxide L transferred to the second tank 11Q is delivered to the outside through the unloading pipe 30 of the second tank 11Q. In this manner, even when the unloading work cannot be performed in the unloading pipe 30 of the first tank 11P, the liquefied carbon dioxide L in the first tank 11P can be unloaded on the outside through the second tank 11Q.
  • the second inner diameter D12 of the second transfer pipe 42 is smaller than the first inner diameter D11 of the first transfer pipe 41. Therefore, the pressure loss ⁇ P in the second transfer pipe 42 is greater than that in the first transfer pipe 41. As a result, the pressure of the liquefied carbon dioxide L flowing through the transfer pipes 40C and 40D is increased by the amount of the pressure loss ⁇ P. Since the pressure of the liquefied carbon dioxide L at the pipe tops of the transfer pipes 40C and 40D is increased, it is possible to suppress the approach of the pressure of the liquefied carbon dioxide L to the triple point pressure. As a result, the solidification of the liquefied carbon dioxide L and the formation of dry ice in the transfer pipes 40C and 40D are suppressed. As a result, in a case where the liquefied carbon dioxide L is accommodated in the tank 11, it is possible to suppress the formation of dry ice in the transfer pipes 40C and 40D and smoothly perform the transfer work and the unloading work.
  • the transfer pipe 40D further includes the third transfer pipe 43 having the base 43a connected to the first transfer pipe 41, the tip 43b open inside the second tank 11Q, and the third inner diameter D13 greater than the second inner diameter D12.
  • the liquefied carbon dioxide L when the liquefied carbon dioxide L is transferred through the third transfer pipe 43 having the third inner diameter D13 greater than the second transfer pipe 42, the liquefied carbon dioxide L can be transferred in a short period of time.
  • the method S1 for loading the liquefied carbon dioxide L which is the method S1 for loading the liquefied carbon dioxide L in the floating structure 1 of (2), the method including: the step S2 of loading the liquefied carbon dioxide L into the tank 11 from the first loading pipe 21 through the second loading pipe 22; and the step S3 of loading the liquefied carbon dioxide L into the tank 11 from the first loading pipe 21 through the third loading pipe 23 when the liquid level of the liquefied carbon dioxide L in the tank 11 reaches the predetermined liquid level.
  • the liquefied carbon dioxide L in the tank 11 when the liquid level of the liquefied carbon dioxide L in the tank 11 is low, the liquefied carbon dioxide L is loaded into the tank 11 through the first loading pipe 21, and accordingly, the solidification of the liquefied carbon dioxide L and the formation of dry ice in the loading pipe 20B are suppressed. Further, the liquid level of the liquefied carbon dioxide L in the tank 11 rises, the differential pressure between the liquefied carbon dioxide L in the tank 11 and the pipe top of the loading pipe 20B becomes small, and the liquefied carbon dioxide L is unlikely to solidify at the pipe top, the liquefied carbon dioxide L is loaded into the tank 11 through the third loading pipe 23. Accordingly, the liquefied carbon dioxide L can be loaded in a short period of time.
  • the method S11 for unloading the liquefied carbon dioxide L which is the method S11 for unloading the liquefied carbon dioxide L in the floating structure 1 of (4), the method including: the step S12 of transferring the liquefied carbon dioxide L in the first tank 11P from the first transfer pipe 41 into the second tank 11Q through the second transfer pipe 42 by pressurizing the inside of the first tank 11P; the step S13 of transferring the liquefied carbon dioxide L in the first tank 11P from the first transfer pipe 41 into the second tank 11Q through the third transfer pipe 43 when the liquid level of the liquefied carbon dioxide L in the second tank 11Q reaches a predetermined liquid level; and the step S14 of delivering the liquefied carbon dioxide L in the second tank 11Q to the outside of the second tank 11Q by the unloading pipe 30.
  • the liquefied carbon dioxide L in the second tank 11Q when the liquid level of the liquefied carbon dioxide L in the second tank 11Q is low, the liquefied carbon dioxide L is transferred from the first tank 11P to the second tank 11Q through the second transfer pipe 42, and accordingly, the solidification of the liquefied carbon dioxide L and the formation of dry ice in the transfer pipe 40D are suppressed.
  • the liquid level of the liquefied carbon dioxide L in the second tank 11Q rises, the differential pressure between the liquefied carbon dioxide L in the second tank 11Q and the pipe top of the transfer pipe 40D becomes small, and the liquefied carbon dioxide L is unlikely to solidify at the pipe top, the liquefied carbon dioxide L is transferred from the first tank 11P to the second tank 11Q through the third transfer pipe 43. Accordingly, the liquefied carbon dioxide L can be transferred in a short period of time.
  • the method for loading liquefied carbon dioxide, and the method for unloading liquefied carbon dioxide according to the present disclosure it is possible to suppress the formation of dry ice in the pipe and smoothly perform the loading and unloading work.

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  • Engineering & Computer Science (AREA)
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  • Chemical & Material Sciences (AREA)
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  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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EP21886353.8A 2020-10-28 2021-10-28 Schwimmkörper, verfahren zum laden von verflüssigtem kohlendioxid und verfahren zum entladen von verflüssigtem kohlendioxid Pending EP4194329A4 (de)

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PCT/JP2021/039910 WO2022092236A1 (ja) 2020-10-28 2021-10-28 浮体、液化二酸化炭素の積込方法、液化二酸化炭素の揚荷方法

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