Liquefied carbon dioxide storage equipment and ship

Abstract

This liquefied carbon dioxide storage facility is provided with: a tank capable of storing liquefied carbon dioxide; a pressure release device provided in the tank and capable of releasing the pressure inside the tank; and a discharge pipe extending from the pressure release device and discharging the carbon dioxide gas from the inside of the tank to the outside, the discharge direction of the carbon dioxide gas in the discharge pipe being inclined upward with respect to the horizontal direction.

Description

Technical Field

[0001] The invention relates to liquefied carbon dioxide storage equipment and a ship.

[0002] This application claims priority from Japanese Patent Application No. 2022-133303 filed in Japan on August 24, 2022, and the contents are incorporated herein by reference. Background Art

[0003] In a tank containing liquefied gas, the pressure inside the tank may rise due to evaporation of the liquefied gas inside the tank. For example, Patent Document 1 discloses a structure in which such a tank is provided with a safety valve to prevent the pressure inside the tank from rising excessively. The safety valve releases the gas inside the tank to the outside when the pressure inside the tank reaches a predetermined working pressure value.

[0004] Prior art literature

[0005] Patent Document 1: Japanese Patent No. 6582347 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, when gas is released from the safety valve, the gas is generally released upward.

[0008] However, when the liquefied gas stored in the tank is liquefied carbon dioxide, the specific gravity of carbon dioxide gas is greater than that of the atmosphere. Therefore, if carbon dioxide gas is released upward from the safety valve, the released carbon dioxide gas falls in a pouring manner, and particularly in windless conditions, it does not diffuse, and the carbon dioxide concentration in the atmosphere may increase locally.

[0009] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a liquefied carbon dioxide storage facility and a ship capable of suppressing a local increase in carbon dioxide concentration when carbon dioxide gas is discharged from a tank.

[0010] Means for solving problems

[0011] In order to solve the above problems, the liquefied carbon dioxide storage equipment of the present invention comprises: a tank, a pressure release device and a discharge pipe. The tank can store liquefied carbon dioxide. The pressure release device is provided in the tank. The pressure release device can release the pressure in the tank. The discharge pipe extends from the pressure release device and discharges carbon dioxide gas from the tank to the outside. The discharge direction of the carbon dioxide gas in the discharge pipe is inclined upward relative to the horizontal direction.

[0012] The ship of the present invention includes a hull and the liquefied carbon dioxide storage facility as described above.

[0013] Effects of the Invention

[0014] According to the liquefied carbon dioxide storage facility and the ship of the present invention, when the carbon dioxide gas is discharged from the tank, it is possible to suppress the carbon dioxide concentration from becoming locally high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a plan view showing a schematic structure of a ship according to an embodiment of the present invention.

[0016] Figure 2 is a diagram showing a liquefied carbon dioxide storage facility provided on a ship according to an embodiment of the present invention, Figure 1 II-II sectional view.

[0017] Figure 3 is a diagram showing a liquefied carbon dioxide storage facility provided on a ship according to an embodiment of the present invention, Figure 1 III-III sectional view.

[0018] Figure 4 It is a cross-sectional view showing a discharge pipe according to an embodiment of the present invention.

[0019] Figure 5 This is a diagram schematically showing the movement trajectory of carbon dioxide gas when carbon dioxide gas is released from the release pipe of the ship according to the embodiment of the present invention. DETAILED DESCRIPTION

[0020] Below, refer to Figure 1~Figure 5 Next, a liquefied carbon dioxide storage facility and a ship according to an embodiment of the present invention will be described.

[0021] (Ship structure)

[0022] In an embodiment of the present invention, the ship 1 transports liquefied carbon dioxide. Figure 1 , Figure 2 As shown, the ship 1 at least includes a hull 2 ​​and a liquefied carbon dioxide storage device 10 .

[0023] (Structure of the hull)

[0024] The hull 2 ​​has a pair of sidewalls 3A and 3B constituting its outer shell, and a bottom 4 (see Figure 2 ) and an upper deck 5. The sides 3A and 3B have a pair of side plates forming the port and starboard sides respectively. Figure 2 As shown, the bottom 4 has a bottom outer plate connecting these side 3A, 3B. Through this pair of side 3A, 3B and the bottom 4, the outer shell of the hull 2 ​​is U-shaped in a cross section perpendicular to the bow and stern direction Da. The upper deck 5 illustrated in this embodiment is a full-length deck exposed to the outside. Figure 1As shown, in the hull 2, for example, an upper deck 5 on the stern 2b side is formed with an upper structure 7 having a living area. In addition, the position and size of the upper structure 7 can be changed appropriately.

[0025] A cargo loading section (tank) 8 is formed in the hull 2 ​​on the bow 2a side relative to the superstructure 7. The cargo loading section 8 is recessed toward the bottom of the ship below the upper deck 5 and is open upward.

[0026] (Overall structure of liquefied carbon dioxide storage equipment)

[0027] Figure 3 is a diagram showing a liquefied carbon dioxide storage facility provided on a ship according to an embodiment of the present invention, Figure 1 III-III sectional view.

[0028] like Figure 2 , Figure 3 As shown, the liquefied carbon dioxide storage equipment 10 mainly includes: a tank 11, a pressure release device 30 and a discharge pipe 40 (refer to Figure 2 ). In addition, Figure 3 In FIG. 1 , the pressure release device 30 is simplified and represented by a quadrilateral.

[0029] (Tank structure)

[0030] like Figure 1 As shown, a plurality of tanks 11 are arranged in the bow and stern direction Da in the cargo loading section 8. In the embodiment of the present disclosure, for example, two tanks 11 are arranged at intervals in the bow and stern direction Da. Each tank 11 can store liquefied carbon dioxide L.

[0031] like Figure 3 As shown, the tank 11 is cylindrical, for example. The tank 11 extends in the bow and stern direction Da as the length direction Dx. The tank 11 includes a cylindrical portion 12 and an end plate portion 13. The cylindrical portion 12 extends in the length direction Dx. Figure 2 As shown in FIG. 1 , in this embodiment, the cylindrical portion 12 is formed into a cylindrical shape, and the cross-sectional shape perpendicular to the longitudinal direction Dx thereof is circular. Figure 3 As shown, the end plates 13 are respectively arranged at both ends of the cylindrical portion 12 in the longitudinal direction Dx. Each end plate 13 is hemispherical and closes the opening of the cylindrical portion 12 in the longitudinal direction Dx.

[0032] In addition, the tank 11 may be arranged so that its longitudinal direction Dx is along the vertical direction Dv. In addition, the tank 11 is not limited to a cylindrical shape, and may be other shapes such as a spherical shape or a square shape.

[0033] The tank 11 is provided with, for example, a loading pipe 15 and a discharge pipe 16. The loading pipe 15 and the discharge pipe 16 are connected to the tank 11. The loading pipe 15 and the discharge pipe 16 can flow the liquefied carbon dioxide L, respectively.

[0034] The loading pipe 15 loads the liquefied carbon dioxide L supplied from the outside into the tank 11. The loading pipe 15 passes through the top of the tank 11, for example, and extends from the upper side to the lower side in the vertical direction Dv inside and outside the tank 11. The front end of the loading pipe 15 (in other words, the lower end in the vertical direction Dv) opens downward at the lower part inside the tank 11.

[0035] The discharge pipe 16 is connected to the inside of the tank 11. The discharge pipe 16, for example, passes through the top of the tank 11 from the outside of the tank 11 and extends to the inside of the tank 11. The front end of the discharge pipe 16 is arranged at the lower part of the tank 11. A pump 17 is provided at the front end of the discharge pipe 16. The pump 17 is arranged in the tank 11. The pump 17 sucks the liquefied carbon dioxide L in the tank 11 and sends it to the outside of the tank 11 through the discharge pipe 16.

[0036] (Pressure release device, release pipe structure)

[0037] like Figure 2 , Figure 3 As shown, the pressure release device 30 is provided in the tank 11. The pressure release device 30 is a so-called safety valve. When the pressure in the tank 11 reaches a preset set pressure, the pressure release device 30 releases the pressure in the tank 11 to the outside. In addition, the pressure release device 30 can be used for purposes other than the safety valve to adjust the pressure in the tank 11 for a desired purpose.

[0038] The pressure release device 30 is connected to the tank 11 via a pipe 31. The pipe 31 is connected to the top of the tank 11, for example, and communicates with the gas phase in the tank 11. The gas phase in the tank 11 mainly contains carbon dioxide gas G generated by evaporation of liquefied carbon dioxide L. A discharge pipe 40 (see FIG. 4 ) is connected to the pressure release device 30. Figure 2 The pressure release device 30 and the release pipe 40 are arranged above the upper deck 5, for example.

[0039] The pressure release device 30 is set to a closed state when the pressure of the gas phase in the tank 11 is lower than a preset set pressure. The pressure release device 30 is opened when the pressure of the gas phase in the tank 11 reaches a preset set pressure, and the pipe 31 is connected to the discharge pipe 40. Thus, the gas phase carbon dioxide gas G in the tank 11 is discharged to the outside from the pipe 31 through the pressure release device 30 and the discharge pipe 40.

[0040] The release pipe 40 extends from the pressure release device 30. When the pressure release device 30 is in an open state, the release pipe 40 releases the carbon dioxide gas G from the inside of the tank 11 to the outside. The release pipe 40 is cylindrical, and the cross-sectional shape intersecting the extension direction thereof can be circular or polygonal. The release pipe 40 can be formed of a metal material such as a stainless steel alloy, for example.

[0041] Figure 4 It is a cross-sectional view showing a discharge pipe according to an embodiment of the present disclosure.

[0042] like Figure 4 As shown, the discharge pipe 40 includes a connecting pipe portion 41, an inclined pipe portion 42, and a bent pipe portion 43. The bent pipe portion 43 is disposed between the connecting pipe portion 41 and the inclined pipe portion 42. Thus, when the pressure release device 30 is in an open state and the carbon dioxide gas G is released from the pressure release device 30 to the discharge pipe 40, the carbon dioxide gas G is released from the inclined pipe portion 42 to the outside atmosphere via the connecting pipe portion 41 and the bent pipe portion 43.

[0043] like Figure 2 As shown, the connecting pipe part 41 is connected to the pressure release part 30r of the pressure release device 30. In this embodiment, the connecting pipe part 41 extends from the pressure release part 30r in a lateral direction intersecting the up-down direction Dv, but the connecting pipe part 41 may extend directly upward from the pressure release part 30r, for example.

[0044] like Figure 4 As shown, the curved pipe portion 43 is provided between the connecting pipe portion 41 and the inclined pipe portion 42. The curved pipe portion 43 is formed between the connecting pipe portion 41 and the inclined pipe portion 42. The curved pipe portion 43 is curved with a curvature less than a predetermined value. When the carbon dioxide gas G is released from the pressure release device 30 to the release pipe 40, the carbon dioxide gas G reaches the inclined pipe portion 42 from the connecting pipe portion 41 via the curved pipe portion 43.

[0045] For example, when the discharge pipe 40 is not provided with the bent pipe portion 43 and the connection portion between the connecting pipe portion 41 and the inclined pipe portion 42 is bent without bending, the pressure loss to the flow of the carbon dioxide gas G increases. As a result, the pressure of the carbon dioxide gas G may drop locally, which may cause the generation of dry ice.

[0046] In contrast, as in this embodiment, by providing the bent pipe portion 43 between the connecting pipe portion 41 and the inclined pipe portion 42 and minimizing the curvature of the bent pipe portion 43, the pressure loss of the carbon dioxide gas G in the bent pipe portion 43 is suppressed, thereby suppressing the generation of dry ice.

[0047] The inclined pipe portion 42 is inclined relative to both the up-down direction Dv and the horizontal direction Dh perpendicular to the up-down direction Dv, and extends obliquely upward from the connecting pipe portion 41. In the present embodiment, the up-down direction Dv refers to the vertical direction when the hull 2 ​​is not swinging. In addition, in the present specification, the horizontal direction Dh refers to the horizontal direction Dh when the hull 2 ​​is not swinging.

[0048] A front end opening 42h that opens obliquely upward is formed at the front end 42t of the inclined tube portion 42 of the discharge tube 40. When the pressure release device 30 is set to the open state, the carbon dioxide gas G is discharged from the front end opening 42h. The discharge direction Ds of the carbon dioxide gas G from the inclined tube portion 42 to the front end opening 42h becomes the extension direction De of the inclined tube portion 42. That is, the discharge direction Ds of the carbon dioxide gas G in the discharge tube 40 is inclined upward relative to the horizontal direction Dh.

[0049] In such a liquefied carbon dioxide storage facility 10 , the pressure release device 30 is closed when the gas pressure in the tank 11 is lower than a preset set pressure. In this state, the pipe 31 and the discharge pipe 40 are cut off by the pressure release device 30 .

[0050] If the pressure of the gas phase in the tank 11 reaches a preset set pressure for some reason, the pressure release device 30 is opened, and the pipe 31 is connected to the discharge pipe 40. As a result, the carbon dioxide gas G in the gas phase in the tank 11 is discharged from the pipe 31 to the discharge pipe 40 via the pressure release device 30. The carbon dioxide gas G discharged from the pressure release device 30 to the discharge pipe 40 is discharged from the inclined pipe portion 42 to the external atmosphere via the connecting pipe portion 41 and the bent pipe portion 43.

[0051] Figure 5 This is a diagram schematically showing the movement trajectory of carbon dioxide gas when carbon dioxide gas is released from the release pipe of the ship according to the embodiment of the present disclosure.

[0052] like Figure 5 As shown in FIG. 1 , since the emission direction Ds of the carbon dioxide gas G in the emission pipe 40 is inclined upward relative to the horizontal direction Dh, the carbon dioxide gas G emitted from the emission pipe 40 rises obliquely upward in the atmosphere in a parabolic shape and then falls obliquely downward in the atmosphere. The carbon dioxide gas G emitted from the emission pipe 40 falls obliquely downward, and thus, when viewed from the vertical direction Dv, the carbon dioxide gas G spreads more widely in the emission direction Ds near the sea surface (the land surface when emitted toward land).

[0053] The height H of the carbon dioxide gas G discharged obliquely upward from the discharge pipe 40 to the highest reaching position P1, and the reaching distance D from the discharge pipe 40 to the position P2 where the carbon dioxide gas G descends obliquely downward in the atmosphere and reaches the sea surface (land surface) vary according to various conditions such as the inclination angle θ of the discharge direction Ds of the carbon dioxide gas G in the discharge pipe 40 relative to the horizontal direction Dh, the set pressure when the pressure release device 30 is switched from the closed state to the open state, the opening diameter of the front end opening 42h of the discharge pipe 40, the wind speed, the sailing speed of the ship 1, the air temperature, and the air pressure. For example, depending on the conditions, the highest reaching height H of the carbon dioxide gas G discharged from the discharge pipe 40 may be hundreds of meters or more.

[0054] Furthermore, if the carbon dioxide gas G is released in the horizontal direction Dh, if there are other ships, offshore floating equipment, land equipment, etc. on the side of the pressure release device 30 in the horizontal direction Dh, the carbon dioxide concentration in the atmosphere may become locally high due to the released carbon dioxide gas G.

[0055] Therefore, it is preferable to set the inclination angle θ of the emission direction Ds of the carbon dioxide gas G in the emission pipe 40 relative to the horizontal direction Dh so that when the carbon dioxide gas G emitted from the emission pipe 40 obliquely upward falls obliquely downward, it will not affect other ships, offshore floating equipment, land equipment, etc. The inclination angle θ of the emission direction Ds of the carbon dioxide gas G relative to the horizontal direction Dh can be set to, for example, 15° or more and 75° or less. The inclination angle θ of the emission direction Ds relative to the horizontal direction Dh can also be set to, for example, 30° or more and 60° or less.

[0056] In this embodiment, the liquefied carbon dioxide storage facility 10 is provided in the ship 1. In this case, the discharge direction Ds of the carbon dioxide gas G discharged from the inclined pipe portion 42 of the discharge pipe 40 is preferably set to a direction intersecting the bow and stern direction Da when viewed from the up-down direction Dv (for example, the ship width direction).

[0057] For example, when the emission direction Ds of the carbon dioxide gas G is directed toward the bow 2a side in the bow-to-stern direction Da, if the carbon dioxide gas G is released obliquely upward from the emission pipe 40 of the sailing ship 1, the ship 1 that continues to sail after the release may reach (rush into) a position where the released carbon dioxide gas G descends in the atmosphere in a parabolic manner.

[0058] Furthermore, when the emission direction Ds of the carbon dioxide gas G is directed toward the bow 2 a side in the bow-to-stern direction Da, the carbon dioxide gas G emitted from the emission pipe 40 may collide with the upper structure 7 .

[0059] Therefore, if Figure 2As shown, when viewed from the up-down direction Dv, the emission direction Ds of the carbon dioxide gas G from the inclined pipe portion 42 of the emission pipe 40 can be set, for example, to the side of the ship width direction Dw connecting the side 3A and the side 3B. Furthermore, when the ship 1 is docked at a harbor or the like, in order to avoid the carbon dioxide gas G from being emitted toward the land side, the direction of the inclined pipe portion 42 can be adjusted (changed) so that the emission direction Ds of the carbon dioxide gas G from the inclined pipe portion 42 of the emission pipe 40 is oriented toward the sea side in the ship width direction Dw.

[0060] (Effect)

[0061] In the liquefied carbon dioxide storage equipment 10 and the ship 1 of the above-mentioned embodiment, the discharge direction Ds of the carbon dioxide gas G in the discharge pipe 40 is inclined upward relative to the horizontal direction Dh. As a result, the carbon dioxide gas G discharged from the pressure release device 30 can be suppressed from falling in a pouring manner, and can be diffused in a direction away from the pressure release device 30. In addition, it is also possible to suppress the carbon dioxide concentration from being locally high at a position on the side of the pressure release device 30 as in the case where the carbon dioxide gas G is discharged along the horizontal direction Dh. Therefore, when the carbon dioxide gas G is discharged from the tank 11, the carbon dioxide concentration can be suppressed from being locally high.

[0062] In addition, in the above embodiment, by setting the inclination angle of the release direction Ds relative to the horizontal direction Dh to be greater than 15° and less than 75°, the carbon dioxide gas G released from the pressure release device 30 is suppressed from falling in a locally poured manner and is well diffused in the direction away from the pressure release device 30.

[0063] In addition, in the above-mentioned embodiment, by setting the inclination angle of the release direction Ds relative to the horizontal direction Dh to be greater than 30° and less than 60°, the carbon dioxide gas G released from the pressure release device 30 can be suppressed from falling in a locally poured manner, and the carbon dioxide gas G can be better diffused in the direction away from the pressure release device 30.

[0064] In addition, in the above-mentioned embodiment, the discharge pipe 40 has the connection pipe part 41 and the inclined pipe part 42. Thus, the carbon dioxide gas G is discharged from the pressure release device 30 through the connection pipe part 41 and from the inclined pipe part 42 extending upwardly obliquely with respect to the horizontal direction Dh. Thus, the carbon dioxide gas G discharged from the pressure release device 30 can be suppressed from falling in a pouring manner, and can be diffused in a direction away from the pressure release device 30.

[0065] In addition, in the above embodiment, the bent pipe portion 43 is provided between the connecting pipe portion 41 and the inclined pipe portion 42. Thus, the pressure drop of the carbon dioxide gas G can be suppressed, and the carbon dioxide gas G can be released from the connecting pipe portion 41 to the inclined pipe portion 42 via the bent pipe portion 43. Therefore, the generation of dry ice in the release pipe 40 can be suppressed.

[0066] (Other embodiments)

[0067] As mentioned above, although the embodiment of this disclosure is described in detail with reference to drawings, the specific structure is not limited to this embodiment, and design changes etc. which do not deviate from the gist of this disclosure are also included.

[0068] Furthermore, in the above-described embodiment, the structure of the liquefied carbon dioxide storage facility 10 is shown, but the structure of each part can be changed appropriately.

[0069] In addition, in the above-mentioned embodiment, the above-mentioned structure is shown as the hull 2 ​​of the ship 1, but the structure of each part such as the hull 2 ​​of the ship 1 can be changed appropriately.

[0070] In addition, in the above-mentioned embodiment, the ship 1 is provided with the liquefied carbon dioxide storage equipment 10, but the liquefied carbon dioxide storage equipment 10 may be provided in the floating body of the offshore floating equipment, the liquefied gas storage facility on land, etc. In the case where the liquefied carbon dioxide storage equipment 10 is provided in the liquefied gas storage facility on land, the discharge direction Ds of the carbon dioxide gas G discharged from the discharge pipe 40 is preferably toward the sea side, rather than the land side where other buildings and the like are located.

[0071] <Note>

[0072] The liquefied carbon dioxide storage facility 10 and the ship 1 described in the embodiment can be understood, for example, as follows.

[0073] (1) The liquefied carbon dioxide storage device 10 of the first embodiment comprises: a tank 11 capable of storing liquefied carbon dioxide L; a pressure release device 30 provided in the tank 11 and capable of releasing the pressure in the tank 11; and a discharge pipe 40 extending from the pressure release device 30 and discharging the carbon dioxide gas G from the tank 11 to the outside, wherein the discharge direction Ds of the carbon dioxide gas G in the discharge pipe 40 is inclined upward relative to the horizontal direction Dh.

[0074] In the liquefied carbon dioxide storage facility 10, when the pressure in the tank 11 storing the liquefied carbon dioxide L increases, the pressure in the tank 11 is released by the pressure release device 30. The carbon dioxide gas G in the tank 11 is released to the outside from the pressure release device 30 through the release pipe 40. The release direction Ds of the carbon dioxide gas G in the release pipe 40 is inclined upward relative to the horizontal direction Dh, so that the carbon dioxide gas G released from the pressure release device 30 is suppressed from falling in a pouring manner and diffusing in a direction away from the pressure release device 30. In addition, it is also possible to suppress the carbon dioxide concentration from being locally high at a position on the side of the pressure release device 30 as in the case where the carbon dioxide gas G is released along the horizontal direction Dh. Therefore, when the carbon dioxide gas G is discharged from the tank 11, the carbon dioxide concentration can be suppressed from being locally high.

[0075] (2) A liquefied carbon dioxide storage facility 10 according to a second aspect is the liquefied carbon dioxide storage facility 10 according to (1), wherein an inclination angle of the discharge direction Ds with respect to the horizontal direction Dh is not less than 15° and not more than 75°.

[0076] Therefore, by setting the inclination angle of the release direction Ds relative to the horizontal direction Dh to be greater than 15° and less than 75°, the carbon dioxide gas G released from the pressure release device 30 is suppressed from falling in a locally pouring manner and is well diffused in the direction away from the pressure release device 30.

[0077] (3) A liquefied carbon dioxide storage facility 10 according to a third aspect is the liquefied carbon dioxide storage facility 10 according to (2), wherein an inclination angle of the discharge direction Ds with respect to the horizontal direction Dh is 30° or more and 60° or less.

[0078] Therefore, by setting the inclination angle of the release direction Ds relative to the horizontal direction Dh to be greater than 30° and less than 60°, the carbon dioxide gas G released from the pressure release device 30 can be prevented from falling in a locally pouring manner, and the carbon dioxide gas G can be better diffused in the direction away from the pressure release device 30.

[0079] (4) The liquefied carbon dioxide storage device 10 of the fourth scheme is based on any one of the liquefied carbon dioxide storage devices 10 in (1) to (3), wherein the discharge pipe 40 has: a connecting pipe portion 41 connected to the pressure release device 30 and extending from the pressure release device 30; and an inclined pipe portion 42 extending upward from the connecting pipe portion 41 at an inclination relative to the horizontal direction Dh.

[0080] Thus, the carbon dioxide gas G is released from the pressure release device 30 through the connecting pipe portion 41 and from the inclined pipe portion 42 extending upwardly inclined relative to the horizontal direction Dh. Thus, the carbon dioxide gas G released from the pressure release device 30 can be suppressed from falling in a pouring manner and can be diffused in a direction away from the pressure release device 30.

[0081] (5) The liquefied carbon dioxide storage device 10 of the fifth scheme is based on the liquefied carbon dioxide storage device 10 of (4), and the above-mentioned discharge pipe 40 also has a bent pipe portion 43. The above-mentioned bent pipe portion 43 is provided between the above-mentioned connecting pipe portion 41 and the above-mentioned inclined pipe portion 42, and is bent with a curvature less than a specified value.

[0082] This can suppress a pressure drop of the carbon dioxide gas G and allow the carbon dioxide gas G to flow from the connecting pipe portion 41 to the inclined pipe portion 42 via the bent pipe portion 43. Therefore, generation of dry ice in the discharge pipe 40 can be suppressed.

[0083] (6) The ship 1 according to the sixth aspect includes the hull 2 ​​and any one of the liquefied carbon dioxide storage facilities 10 described in (1) to (5).

[0084] Thus, it is possible to provide the ship 1 including the liquefied carbon dioxide storage facility 10 capable of suppressing a local increase in carbon dioxide concentration when the carbon dioxide gas G is discharged from the tank 11 .

[0085] Industrial Applicability

[0086] According to the liquefied carbon dioxide storage facility and the ship of the above-described aspect, when the carbon dioxide gas is discharged from the tank, it is possible to suppress a local increase in the carbon dioxide concentration.

[0087] Description of Reference Numerals

[0088] 1…ship; 2…hull; 2a…bow; 2b…stern; 3A, 3B…side; 4…bottom; 5…upper deck; 7…superstructure; 8…cargo loading section; 10…liquefied carbon dioxide storage equipment; 11…tank; 12…cylindrical portion; 13…end plate portion; 15…loading piping; 16…discharge piping; 17…pump; 30…pressure release device; 30r…pressure release portion; 31…pipe; 40…discharge pipe; 41…connecting pipe portion; 42…inclined pipe portion; 42h…front end opening; 42t…front end; 43…bent pipe portion; D…reaching distance; Da…fore and aft direction; De…extension direction; Dh…horizontal direction; Ds…discharge direction; Dv…up and down direction; Dw…ship width direction; Dx…length direction; G…carbon dioxide gas; L…liquefied carbon dioxide; P1…highest reaching position; P2…position; H…height; θ…inclination angle.

Claims

1. A liquefied carbon dioxide storage device, comprising: Tanks capable of storing liquefied carbon dioxide; a pressure release device, provided in the tank, capable of releasing the pressure in the tank; and a discharge pipe extending from the pressure release device and discharging carbon dioxide gas from the tank to the outside, A release direction of the carbon dioxide gas in the release pipe is inclined upward with respect to a horizontal direction.

2. The liquefied carbon dioxide storage device according to claim 1, wherein: The inclination angle of the release direction with respect to the horizontal direction is greater than or equal to 15° and less than or equal to 75°.

3. The liquefied carbon dioxide storage device according to claim 2, wherein: The inclination angle of the release direction with respect to the horizontal direction is greater than or equal to 30° and less than or equal to 60°.

4. The liquefied carbon dioxide storage device according to claim 1 or 2, wherein: The discharge pipe has: a connecting pipe portion connected to the pressure relief device and extending from the pressure relief device; and The inclined pipe portion extends from the connecting pipe portion so as to be inclined upward relative to the horizontal direction.

5. The liquefied carbon dioxide storage device according to claim 4, wherein: The discharge pipe further includes a bent pipe portion provided between the connecting pipe portion and the inclined pipe portion and bent at a curvature equal to or less than a predetermined value.

6. A vessel having: hull; and The liquefied carbon dioxide storage device according to claim 1 or 2.

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