WO2022210322A1 - 船舶、船舶におけるタンクの圧力調整方法 - Google Patents
船舶、船舶におけるタンクの圧力調整方法 Download PDFInfo
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- WO2022210322A1 WO2022210322A1 PCT/JP2022/014236 JP2022014236W WO2022210322A1 WO 2022210322 A1 WO2022210322 A1 WO 2022210322A1 JP 2022014236 W JP2022014236 W JP 2022014236W WO 2022210322 A1 WO2022210322 A1 WO 2022210322A1
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- Prior art keywords
- tank
- carbon dioxide
- pressure
- gas
- dioxide gas
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 446
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 203
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 203
- 238000002347 injection Methods 0.000 claims abstract description 78
- 239000007924 injection Substances 0.000 claims abstract description 78
- 239000007791 liquid phase Substances 0.000 claims description 23
- 239000012071 phase Substances 0.000 claims description 19
- 239000007789 gas Substances 0.000 description 111
- 235000011089 carbon dioxide Nutrition 0.000 description 40
- 230000001133 acceleration Effects 0.000 description 28
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000008022 sublimation Effects 0.000 description 2
- 238000000859 sublimation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Images
Classifications
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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
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
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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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- 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
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/025—Bulk storage in barges or on 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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
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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
- 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
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/035—Orientation with substantially horizontal main axis
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
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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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/013—Carbone dioxide
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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
- 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
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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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
- 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
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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
- 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
- F17C2223/035—High pressure (>10 bar)
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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
- 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
- F17C2225/043—Localisation of the filling point in the gas
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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
- 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
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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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
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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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0482—Acceleration
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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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0626—Pressure
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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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0631—Temperature
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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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0636—Flow or movement of content
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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
- 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
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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
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/02—Mixing fluids
- F17C2265/022—Mixing fluids identical fluid
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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
- 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
- TECHNICAL FIELD The present disclosure relates to a ship and a method for adjusting the pressure of a tank in a ship. This application claims priority to Japanese Patent Application No. 2021-059785 filed in Japan on March 31, 2021, the contents of which are incorporated herein.
- Patent Document 1 discloses a configuration for transporting dry ice precipitated by spraying liquid carbon dioxide in the cargo hold.
- Patent Document 2 discloses conveying carbon dioxide in the form of compressed carbon dioxide gas at room temperature (eg, 0 to 30° C.) under a tank pressure of 15 kg/cm 2 .
- the liquefied carbon dioxide may solidify and form dry ice for the following reasons. That is, the pressure of liquefied carbon dioxide in the tank corresponds to the operating pressure of the tank.
- the triple point pressure triple point pressure where the gas phase, liquid phase, and solid phase coexist is the triple point of liquefied natural gas (LNG) and liquefied petroleum gas (LPG). It is high compared to the pressure and can reach the triple point when the tank is depressurized during operation.
- the tank operating pressure (tank design pressure) is set so that the pressure of the liquefied carbon dioxide does not fall below the triple point pressure.
- tank operating pressure is set significantly higher than the triple point pressure of liquefied carbon dioxide, the tank itself and the piping connected to the tank must have a pressure-resistant structure that corresponds to the tank operating pressure (tank design pressure). This will lead to an increase in costs.
- the dynamic pressure of the liquefied carbon dioxide increases and the static pressure of the liquefied carbon dioxide decreases according to the flow velocity of the liquefied carbon dioxide.
- This resulting reduction in static pressure of the liquefied carbon dioxide in the tank can cause the liquefied carbon dioxide to freeze in the tank to form dry ice. Since the density of dry ice is higher than that of liquefied carbon dioxide, once dry ice is generated in the tank, it settles and accumulates at the bottom of the tank. may take a long time to sublimate.
- the present disclosure has been made in order to solve the above problems, and provides a ship and a tank pressure adjustment method in a ship that can suppress the formation of dry ice and smoothly operate the tank. With the goal.
- the ship according to the present disclosure includes a hull, a tank, and a carbon dioxide injection section.
- the tank is provided on the hull.
- the tank stores liquefied carbon dioxide.
- the carbon dioxide injection part is provided in the hull.
- the carbon dioxide injection part can inject into the tank carbon dioxide gas having a higher temperature and pressure than the carbon dioxide in the tank.
- a tank pressure adjustment method for a ship is a tank pressure adjustment method for a ship as described above, and includes a step of acquiring information and a step of injecting carbon dioxide gas into the tank.
- the information obtaining step at least one of information about the pressure in the tank and information about the shaking of the liquefied carbon dioxide stored in the tank is obtained.
- the carbon dioxide injection unit injects the carbon dioxide gas into the tank based on the acquired information.
- FIG. 1 is a plan view showing a schematic configuration of a ship according to an embodiment of the present disclosure
- FIG. 1 is a diagram showing a schematic configuration of a carbon dioxide injection section according to an embodiment of the present disclosure
- FIG. 3 is a diagram showing a hardware configuration of a control device for a carbon dioxide injection unit according to an embodiment of the present disclosure
- FIG. 3 is a functional block diagram of a control device according to an embodiment of the present disclosure
- FIG. 4 is a flow chart showing a procedure of a tank pressure adjustment method for a ship according to an embodiment of the present disclosure.
- FIG. 1 is a plan view showing a schematic configuration of a ship according to an embodiment of the present disclosure
- FIG. FIG. 2 is a diagram showing a schematic configuration of a carbon dioxide injection section according to an embodiment of the present disclosure.
- a ship 1 of this embodiment mainly includes a hull 2, a tank 10, and a carbon dioxide injection section 20.
- a vessel 1 transports liquefied carbon dioxide.
- the hull 2 has a pair of sides 3A and 3B and a bottom (not shown) that form the outer shell of the hull.
- the shipboard sides 3A, 3B are provided with a pair of shipboard skins forming the starboard and port sides, respectively.
- a ship bottom (not shown) is provided with a bottom shell plate connecting these sides 3A and 3B.
- the pair of sides 3A and 3B and the bottom (not shown) form a U-shaped outer shell of the hull 2 in a cross section orthogonal to the bow-stern direction FA.
- the hull 2 further includes an upper deck 5, which is a through deck arranged on the uppermost layer.
- a superstructure 7 is formed on the upper deck 5 .
- a living quarter and the like are provided in the upper structure 7 .
- a cargo space 8 for loading cargo is provided on the bow 2a side in the fore-and-aft direction FA from the upper structure 7 .
- a tank 10 is provided in the hull 2 .
- a plurality of tanks 10 are arranged in the cargo space 8 along the bow-stern direction FA.
- two tanks 10 are arranged with an interval in the fore-and-aft direction FA.
- the tank 10 stores liquefied carbon dioxide L therein.
- the pressure inside the tank 10 is, for example, about 0.55-2.0 MPaG.
- the temperature of the liquefied carbon dioxide L stored in the tank 10 is, for example, about -50 to -20°C.
- the tank 10 has, for example, a horizontally extending cylindrical shape.
- the tank 10 includes a tubular portion 12 and an end spherical portion 13 .
- the cylindrical portion 12 extends with the horizontal direction as its longitudinal direction.
- the tubular portion 12 is formed in a cylindrical shape having a circular cross-sectional shape perpendicular to the longitudinal direction.
- the end spherical portions 13 are arranged at both ends of the cylindrical portion 12 in the longitudinal direction.
- Each end spherical portion 13 has a hemispherical shape and closes the openings at both longitudinal ends of the tubular portion 12 .
- the shape of the tank 10 is not limited to a cylindrical shape, and the shape of the tank 10 may be spherical, rectangular, or the like.
- the carbon dioxide injection unit 20 is configured to be capable of injecting carbon dioxide gas G having a higher temperature and pressure than the carbon dioxide (liquid phase 10a and gas phase 10b) in the tank 10 into the tank 10. It is This carbon dioxide injection section 20 is provided in the hull 2 .
- the carbon dioxide injection section 20 includes a gas tank 21 , a first injection pipe 22 , a second injection pipe 23 , a pressure sensor 24 , an acceleration sensor 25 and a controller 60 .
- the gas tank 21 contains carbon dioxide gas G.
- the pressure of the carbon dioxide gas G stored in the gas tank 21 is, for example, 5-15.7 MPaG.
- the temperature of the carbon dioxide gas G stored in the gas tank 21 is normal temperature, for example, about 15 to 45.degree. Since the gas tank 21 stores the carbon dioxide gas G at room temperature, it does not necessarily have to be heat-insulating.
- the gas tank 21 may be provided in the cargo space 8, or may be provided in another location such as on the upper deck 5 as appropriate.
- the first injection pipe 22 and the second injection pipe 23 respectively form flow paths for injecting the carbon dioxide gas G in the gas tank 21 into the tank 10 .
- a proximal end portion of the first injection pipe 22 and a proximal end portion of the second injection pipe 23 are each connected to the gas tank 21 .
- a tip portion 22 s of the first injection pipe 22 opens into the gas phase 10 b in the tank 10 at an upper portion within the tank 10 .
- a tip portion 23 s of the second injection pipe 23 opens into the liquid phase 10 a (liquefied carbon dioxide L) in the tank 10 at the bottom of the tank 10 .
- the first injection pipe 22 has an on-off valve 22v
- the second injection pipe 23 has an on-off valve 23v.
- opening and closing the on-off valve 22v the injection of the carbon dioxide gas G into the tank 10 by the first injection pipe 22 is intermittently, and by opening and closing the on-off valve 23v, the carbon dioxide gas G is injected by the second injection pipe 23. Injection into the tank 10 is interrupted.
- the opening and closing operations of the on-off valves 22v and 23v are automatically controlled by the controller 60.
- FIG. The opening and closing operations of the on-off valves 22v and 23v may be manually performed by, for example, an operator.
- the pressure sensor 24 acquires information regarding the pressure inside the tank 10 . More specifically, pressure sensor 24 detects the pressure of gas phase 10 b in tank 10 . The pressure sensor 24 outputs the detected pressure data to the control device 60 .
- the acceleration sensor 25 acquires information on the shaking (sloshing) of the liquid phase 10a in the tank 10.
- the acceleration sensor 25 detects the acceleration caused by the shaking of the hull 2 as the information on the shaking of the liquid phase 10a in the tank 10 .
- the acceleration sensor 25 detects, for example, the acceleration caused by the swaying (pitting) of the hull 2 in the fore-and-aft direction FA and the swaying (rolling) of the hull 2 in the transverse direction.
- the acceleration sensors 25 may be provided at multiple locations on the hull 2 .
- the acceleration sensor 25 outputs detected acceleration data to the control device 60 .
- the control device 60 is a computer including a CPU 61 (Central Processing Unit), a ROM 62 (Read Only Memory), a RAM 63 (Random Access Memory), an HDD 64 (Hard Disk Drive), and a signal reception module 65 .
- a signal receiving module 65 receives detection signals from the pressure sensor 24 and the acceleration sensor 25 .
- the CPU 61 of the control device 60 executes a program stored in advance in the HDD 64, ROM 62, etc. to control the functional configurations of the signal input section 70, determination section 71, open/close control section 72, and output section 75.
- the signal input unit 70 receives the detection signals from the pressure sensor 24 and the acceleration sensor 25 via the signal reception module 65, that is, the data of the detected value of the pressure of the gas phase 10b in the tank 10, and the sway of the hull 2. Receives the data of the resulting acceleration detection value.
- the determination unit 71 determines whether it is necessary to inject the carbon dioxide gas G from the gas tank 21 into the tank 10 .
- the opening/closing control unit 72 controls opening/closing of the opening/closing valve 22v and opening/closing of the opening/closing valve 23v based on the determination result of the necessity of injection of the carbon dioxide gas G in the determination unit 71 .
- the opening/closing control section 72 sends a control signal for opening and closing the opening/closing valves 22v and 23v to the output section 75 .
- the output unit 75 outputs the control signal sent from the opening/closing control unit 72 to the opening/closing valve 22v and the opening/closing valve 23v.
- the method S1 for adjusting the pressure of the tank 10 includes a step S2 of obtaining information, a step S3 of determining whether injection is necessary, and injecting carbon dioxide gas into the tank. It includes a step S4 and a step S5 of stopping the injection of carbon dioxide gas.
- the control device 60 acquires detection signals from the pressure sensor 24 and the acceleration sensor 25 . Detection signals from the pressure sensor 24 and the acceleration sensor 25 are received by the signal input section 70 .
- the control device 60 acquires the detected value of the pressure of the gas phase 10 b in the tank 10 from the pressure sensor 24 as information about the pressure in the tank 10 .
- the control device 60 acquires a detection value of acceleration due to shaking of the hull 2 from the acceleration sensor 25 as information relating to the shaking of the liquefied carbon dioxide L stored in the tank 10 .
- the control device 60 uses the determination unit 71 to determine whether or not the carbon dioxide gas G needs to be injected from the gas tank 21 to the tank 10 .
- the determination unit 71 determines whether to inject the carbon dioxide gas G based on at least one of the information about the pressure in the tank 10 acquired in step S2 and the information about the shaking of the liquefied carbon dioxide L stored in the tank 10. Necessity is determined.
- the determination unit 71 determines that the carbon dioxide gas G needs to be injected into the tank 10 when the pressure in the tank 10 becomes equal to or lower than a predetermined pressure lower limit value.
- the predetermined pressure lower limit value is set to be equal to or higher than the triple point pressure of the liquefied carbon dioxide L. Further, the determination unit 71 determines that it is necessary to inject the carbon dioxide gas G into the tank 10, for example, when the acceleration generated in the hull 2 becomes equal to or greater than a predetermined threshold value.
- the state in which the acceleration generated in the hull 2 is equal to or greater than a predetermined threshold is a state in which the swaying of the liquefied carbon dioxide L stored in the tank 10 is equal to or greater than a predetermined level.
- the static pressure in the tank decreases due to the shaking of the liquefied carbon dioxide L stored in the tank 10, and the inside of the tank of liquefied carbon dioxide L may solidify.
- the acceleration generated in the hull 2 is smaller than a predetermined threshold, the solidification of the liquefied carbon dioxide L caused by the shaking of the liquefied carbon dioxide L substantially stored in the tank 10 is does not occur.
- the determination unit 71 injects the carbon dioxide gas G into the tank 10 when the acceleration generated in the hull 2 is equal to or higher than the threshold even if the pressure in the tank 10 is not equal to or lower than the pressure lower limit value. determine that it is necessary. Then, the determination unit 71 determines that it is necessary to inject the carbon dioxide gas G into the tank 10 if the pressure in the tank 10 is equal to or less than the pressure lower limit value even if the acceleration generated in the hull 2 is not equal to or greater than the threshold value. judge. Note that the determination unit 71 needs to inject the carbon dioxide gas G into the tank 10 when the pressure in the tank 10 is equal to or lower than the pressure lower limit and the acceleration generated in the hull 2 is equal to or higher than the threshold.
- the determination unit 71 determines the necessity of injection of the carbon dioxide gas G based on a map, a table, a formula, etc., which are set in advance based on the correlation between the pressure in the tank 10 and the acceleration generated in the hull 2. You may make it judge.
- step S3 When it is determined that the carbon dioxide gas G does not need to be injected into the tank 10 as a result of the determination in step S3 ("No" in FIG. 5), the process returns to step S2 described above. On the other hand, if it is determined that the carbon dioxide gas G needs to be injected into the tank 10 as a result of the determination in step S3 ("Yes” in FIG. 5), a step S4 of injecting carbon dioxide gas into the tank is performed. back to
- step S4 of injecting carbon dioxide gas into the tank carbon dioxide gas G is injected from the gas tank 21 into the tank 10.
- the opening/closing control section 72 outputs a control signal for opening the opening/closing valves 22v and 23v to the opening/closing valves 22v and 23v via the output section 75 .
- the opening/closing control unit 72 may open both the opening/closing valves 22v and 23v and inject the carbon dioxide gas G from the gas tank 21 into the tank 10 through both the first injection pipe 22 and the second injection pipe 23. .
- the opening/closing control unit 72 may open only the opening/closing valve 22v and inject the carbon dioxide gas G from the gas tank 21 into the gas phase 10b of the tank 10 through only the first injection pipe 22 .
- the opening/closing control unit 72 may further open only the opening/closing valve 23v and inject the carbon dioxide gas G from the gas tank 21 into the liquid phase 10a at the bottom of the tank 10 through only the second injection pipe 23.
- the carbon dioxide gas G When the carbon dioxide gas G is injected into the tank 10, the carbon dioxide gas G has a higher temperature and pressure than the carbon dioxide (including both the liquid phase 10a and the gas phase 10b) in the tank 10, so the tank The temperature within 10 and the pressure rise.
- the temperature and pressure in the tank 10 are increased and the dry ice D is sublimated.
- step S5 of stopping the injection of carbon dioxide gas the injection of carbon dioxide gas G from the gas tank 21 to the tank 10 is stopped when a preset injection end condition is satisfied.
- the control device 60 detects the carbon dioxide gas G stop the injection of
- the opening/closing control section 72 outputs a control signal for closing the opening/closing valves 22v and 23v to the opening/closing valves 22v and 23v via the output section 75 .
- the on-off valves 22v and 23v are closed, the injection of the carbon dioxide gas G from the gas tank 21 to the tank 10 is stopped.
- the process returns to step S2 and repeats the series of steps described above.
- the ship 1 of the above embodiment includes a hull 2, a tank 10 provided in the hull 2 and storing liquefied carbon dioxide L, and a tank 10 provided in the hull 2, and carbon dioxide in the tank 10 (liquid phase 10a and gas phase 10b ), and a carbon dioxide injection part 20 capable of injecting into the tank 10 a carbon dioxide gas G having a higher temperature and a higher pressure than the tank 10.
- the carbon dioxide injection part 20 injects the carbon dioxide gas G into the tank 10 .
- the carbon dioxide gas G has a higher temperature and a higher pressure than carbon dioxide (including both the liquid phase 10a and the gas phase 10b) in the tank 10, pressure drop in the tank 10 can be suppressed.
- the dry ice D when the dry ice D is generated in the tank 10, the dry ice D can be sublimated by the carbon dioxide gas G. Therefore, the generation of dry ice D can be suppressed, and the operation of the tank 10 can be performed smoothly.
- the carbon dioxide injection section 20 is further configured to be capable of injecting the carbon dioxide gas G into the gas phase 10b of carbon dioxide in the tank 10 . Therefore, by injecting the carbon dioxide gas G into the gas phase 10b of carbon dioxide in the tank 10 with the carbon dioxide injection part 20, the pressure in the tank 10 can be increased immediately.
- the carbon dioxide injection section 20 is further configured to be capable of injecting the carbon dioxide gas G into the liquid phase 10a of carbon dioxide in the tank 10 . Therefore, when dry ice D is generated in the carbon dioxide liquid phase 10a by injecting the carbon dioxide gas G into the carbon dioxide liquid phase 10a in the tank 10 in the carbon dioxide injection unit 20, the dry ice D Carbon dioxide gas G can be sent around the . Then, the injected carbon dioxide gas G gasifies the liquid phase 10a of carbon dioxide around the dry ice D, thereby increasing the pressure in the tank 10 and promoting the sublimation of the dry ice D. .
- the tip portion 23 s of the second injection pipe 23 of the carbon dioxide injection portion 20 opens into the liquid phase 10 a (liquefied carbon dioxide L) in the tank 10 at the bottom portion of the tank 10 .
- liquid phase 10 a liquefied carbon dioxide L
- dry ice D tends to accumulate at the bottom of tank 10 because it is denser than liquefied carbon dioxide.
- the tip 23s of the second injection pipe 23 of the carbon dioxide injection part 20 is open at the bottom of the tank 10 as described above, the carbon dioxide gas G is positioned closer to the dry ice D deposited on the bottom. can be injected to quickly sublimate the dry ice D deposited on the bottom.
- the carbon dioxide injection unit 20 further includes the carbon dioxide gas G is injected into the tank 10.
- the carbon dioxide gas G is injected into the tank 10 to Generation of dry ice D within 10 can be suppressed.
- carbon dioxide gas G is injected into the tank 10 when the liquefied carbon dioxide L stored in the tank 10 swings above a predetermined level. Therefore, when the shaking of the liquefied carbon dioxide L stored in the tank 10 reaches or exceeds a predetermined level, the pressure in the tank 10 can be increased, thereby preventing the formation of dry ice D in the tank 10. can be suppressed.
- the method S1 for adjusting the pressure of the tank 10 of the above embodiment includes a step S2 of acquiring at least one of information on the pressure in the tank 10 and information on the shaking of the liquefied carbon dioxide L stored in the tank 10; and a step S4 of injecting the carbon dioxide gas G into the tank 10 by the carbon dioxide injection unit 20 based on the information.
- the carbon dioxide gas G can be injected into the tank 10 based on the pressure in the tank 10 and the shaking state of the liquefied carbon stored in the tank 10, so that dry ice It is possible to suppress the generation of D and to operate the tank 10 smoothly.
- the pressure sensor 24 is provided in order to obtain information about the pressure inside the tank 10. However, not only the pressure inside the tank 10 but also the temperature of the gas phase 10b inside the tank 10 is detected. , the pressure and temperature in the tank 10 may be used to determine whether it is necessary to inject the carbon dioxide gas G into the tank 10 .
- the acceleration sensor 25 is provided in order to obtain information about the sloshing of the liquid phase 10a in the tank 10. For example, the change in the liquid level of the liquid phase 10a in the tank 10 may be detected.
- the ship 1 includes a hull 2, a tank 10 provided in the hull 2 and storing liquefied carbon dioxide L, and a tank 10 provided in the hull 2 that stores carbon dioxide in the tank 10. and a carbon dioxide injection part 20 capable of injecting carbon dioxide gas G of high temperature and high pressure into the tank 10 .
- the carbon dioxide injection section 20 can inject carbon dioxide gas G having a higher temperature and pressure than the carbon dioxide in the tank 10 into the tank 10 .
- the carbon dioxide injection part 20 injects the carbon dioxide gas G into the tank 10 . Since the carbon dioxide gas G has a higher temperature and a higher pressure than carbon dioxide (including both the liquid phase 10a and the gas phase 10b) in the tank 10, pressure drop in the tank 10 can be suppressed.
- the dry ice D when dry ice D is generated in the tank 10, the dry ice D can be sublimated by the carbon dioxide gas G. Therefore, the generation of dry ice D can be suppressed, and the operation of the tank 10 can be performed smoothly.
- the ship 1 according to the second aspect is the ship 1 of (1), wherein the carbon dioxide injection unit 20 transfers the carbon dioxide gas G to the gas phase 10b of carbon dioxide in the tank 10. inject.
- the ship 1 according to the third aspect is the ship 1 of (1) or (2), wherein the carbon dioxide injection unit 20 converts the carbon dioxide gas G into the carbon dioxide in the tank 10 Inject into the liquid phase 10a.
- dry ice Carbon dioxide gas G can be sent around D.
- the injected carbon dioxide gas G gasifies the carbon dioxide liquid phase 10a around the dry ice D, thereby increasing the pressure in the tank 10 and promoting the sublimation of the dry ice D.
- a ship 1 according to a fourth aspect is the ship 1 according to any one of (1) to (3), wherein the carbon dioxide injection unit 20 is configured so that the pressure in the tank 10 is reduced to the liquefied dioxide The carbon dioxide gas G is injected into the tank 10 when the pressure becomes equal to or lower than the lower limit pressure set to be equal to or higher than the triple point pressure of carbon L.
- the ship 1 according to the fifth aspect is the ship 1 according to any one of (1) to (4), wherein the carbon dioxide injection unit 20 is the liquefied dioxide stored in the tank 10 The carbon dioxide gas G is injected into the tank 10 when the fluctuation of the carbon L reaches or exceeds a predetermined level.
- the carbon dioxide gas G is injected into the tank 10 to increase the pressure in the tank 10. It is possible to suppress the generation of dry ice D inside.
- the swaying of the liquefied carbon dioxide L stored in the tank 10 is detected by detecting the acceleration caused by the swaying of the hull 2 and detecting the change in the liquid level of the liquefied carbon dioxide L in the tank 10.
- a pressure adjusting method S1 for the tank 10 in the ship 1 according to the sixth aspect is the pressure adjusting method S1 for the tank 10 in the ship 1 according to any one of (1) to (5), wherein the tank 10 A step S2 of acquiring at least one of information on the internal pressure and information on the shaking of the liquefied carbon dioxide L stored in the tank 10, and based on the acquired information, the carbon dioxide injection unit 20 and a step S4 of injecting carbon dioxide gas G into the tank 10 .
- the information about the pressure inside the tank 10 includes the pressure value inside the tank 10 and the temperature of the gas phase 10b inside the tank 10 .
- Information about the swaying of the liquefied carbon dioxide L stored in the tank 10 includes a detected value of acceleration caused by the swaying of the hull 2 and a detected value of change in the liquid level of the liquefied carbon dioxide L in the tank 10 .
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Abstract
Description
本願は、2021年3月31日に日本に出願された特願2021-059785号について優先権を主張し、その内容をここに援用する。
そして、ドライアイスの密度は液化二酸化炭素よりも大きいことから、タンク内でドライアイスが発生してしまうと、タンク底部に沈降して堆積するため、タンク内の圧力が回復した後も、ドライアイスの昇華に時間がかかる可能性がある。
(船舶の全体構成)
図1は、本開示の実施形態に係る船舶の概略構成を示す平面図である。図2は、本開示の実施形態に係る二酸化炭素注入部の概略構成を示す図である。
図1、図2に示すように、この実施形態の船舶1は、船体2と、タンク10と、二酸化炭素注入部20と、を主に備えている。船舶1は、液化二酸化炭素を運搬する。
タンク10は、船体2に設けられている。タンク10は、カーゴスペース8内に、船首尾方向FAに沿って、複数が配置されている。本開示の実施形態において、タンク10は、船首尾方向FAに間隔を空けて二個配置されている。図2に示すように、タンク10は、その内部に液化二酸化炭素Lを貯留する。タンク10内の圧力は、例えば、約0.55~2.0MPaGである。タンク10内に貯留された液化二酸化炭素Lの温度は、例えば約-50~-20℃である。
図2に示すように、二酸化炭素注入部20は、タンク10内の二酸化炭素(液相10a、及び気相10b)よりも高温かつ高圧の二酸化炭素ガスGを、タンク10内に注入可能に構成されている。この二酸化炭素注入部20は、船体2に設けられている。二酸化炭素注入部20は、ガスタンク21と、第一注入配管22と、第二注入配管23と、圧力センサー24と、加速度センサー25と、制御装置60と、を備えている。
図3に示すように、制御装置60は、CPU61(Central Processing Unit)、ROM62(Read Only Memory)、RAM63(Random Access Memory)、HDD64(Hard Disk Drive)、信号受信モジュール65を備えるコンピュータである。信号受信モジュール65は、圧力センサー24、加速度センサー25からの検出信号を受信する。
図4に示すように、制御装置60のCPU61は予めHDD64やROM62等に記憶されたプログラムを実行することにより、信号入力部70、判定部71、開閉制御部72、出力部75の各機能構成を実現する。
信号入力部70は、信号受信モジュール65を介して、圧力センサー24、加速度センサー25からの検出信号、つまり、タンク10内の気相10bの圧力の検出値のデータ、及び、船体2の揺れによって生じる加速度の検出値のデータを受信する。
開閉制御部72は、判定部71における二酸化炭素ガスGの注入の要否の判定結果に基づき、開閉弁22vの開閉と、開閉弁23vの開閉とを制御する。開閉制御部72は、開閉弁22v、23vを開閉させるための制御信号を、出力部75に送る。
出力部75は、開閉制御部72から送られてきた制御信号を、開閉弁22v、開閉弁23vに出力する。
図5に示すように、本開示の実施形態に係るタンク10の圧力調整方法S1は、情報を取得する工程S2と、注入の要否を判定する工程S3と、二酸化炭素ガスをタンクに注入する工程S4と、二酸化炭素ガスの注入を停止する工程S5と、を含む。
上記実施形態の船舶1は、船体2と、船体2に設けられ、液化二酸化炭素Lを貯留するタンク10と、船体2に設けられ、タンク10内の二酸化炭素(液相10a、及び気相10b)よりも高温かつ高圧の二酸化炭素ガスGをタンク10内に注入可能な二酸化炭素注入部20と、を備えている。
したがって、ドライアイスDの生成を抑え、タンク10の運用を円滑に行うことができることができる。
したがって、二酸化炭素注入部20で二酸化炭素ガスGをタンク10内の二酸化炭素の気相10bに注入することによって、タンク10内の圧力を即座に高めることができる。
したがって、二酸化炭素注入部20で二酸化炭素ガスGをタンク10内の二酸化炭素の液相10aに注入することによって、二酸化炭素の液相10a中にドライアイスDが生成されている場合、ドライアイスDの周囲に二酸化炭素ガスGを送り込むことができる。そして、注入された二酸化炭素ガスGによって、ドライアイスDの周囲の二酸化炭素の液相10aがガス化することで、タンク10内の圧力を高めるとともに、ドライアイスDの昇華を促進させることができる。
例えば、タンク10内にドライアイスDが生成された場合、ドライアイスDは液化二酸化炭素より密度が高いことからタンク10の底部に堆積する傾向がある。これに対し、上記の通り二酸化炭素注入部20の第二注入配管23の先端部23sがタンク10の底部で開口していることで、底部に堆積したドライアイスDにより近い位置に二酸化炭素ガスGを噴射して、底部に堆積したドライアイスDを迅速に昇華させることが可能となる。
このようにすることで、タンク10内の圧力が圧力下限値以下となり、タンク10内でドライアイスDが生成されやすい状態となった場合に、二酸化炭素ガスGをタンク10内に注入してタンク10内でのドライアイスDの生成を抑えることができる。
したがって、タンク10内に貯留された液化二酸化炭素Lの揺れが、所定レベル以上となった場合にタンク10内の圧力を高めることができ、これにより、タンク10内でのドライアイスDの生成を抑えることができる。
このようにすることで、タンク10内の圧力、タンク10内に貯留された液化炭素の揺れの状態に基づいて、二酸化炭素ガスGのタンク10内への注入を行うことができるため、ドライアイスDの生成を抑えて、タンク10の運用を円滑に行うことができることが可能となる。
以上、本開示の実施の形態について図面を参照して詳述したが、具体的な構成はこの実施の形態に限られるものではなく、本開示の要旨を逸脱しない範囲の設計変更等も含まれる。
なお、上記実施形態の船舶1では、第一注入配管22、第二注入配管23を設けるようにしたが、第一注入配管22、第二注入配管23の何れか一方のみを設けるようにしてもよい。
実施形態に記載の船舶1、船舶1におけるタンク10の圧力調整方法S1は、例えば以下のように把握される。
したがって、ドライアイスDの生成を抑え、タンク10の運用を円滑に行うことができることができる。
タンク10内に貯留された液化二酸化炭素Lの揺れは、船体2の揺れによって生じる加速度を検出すること、タンク10内の液化二酸化炭素Lの液面レベルの変位を検出することによって検出される。
タンク10内の圧力に関する情報としては、タンク10内の圧力値、タンク10内の気相10bの温度が挙げられる。
タンク10内に貯留された液化二酸化炭素Lの揺れに関する情報としては、船体2の揺れによって生じる加速度の検出値、タンク10内の液化二酸化炭素Lの液面レベルの変位の検出値が挙げられる。
Claims (6)
- 船体と、
前記船体に設けられ、液化二酸化炭素を貯留するタンクと、
前記船体に設けられ、前記タンク内の二酸化炭素よりも高温かつ高圧の二酸化炭素ガスを前記タンク内に注入可能な二酸化炭素注入部と、
を備える船舶。 - 前記二酸化炭素注入部は、
前記二酸化炭素ガスを、前記タンク内の二酸化炭素の気相に注入する
請求項1に記載の船舶。 - 前記二酸化炭素注入部は、
前記二酸化炭素ガスを、前記タンク内の二酸化炭素の液相に注入する
請求項1又は2に記載の船舶。 - 前記二酸化炭素注入部は、
前記タンク内の圧力が、前記液化二酸化炭素の三重点圧力以上に設定された圧力下限値以下となった場合に、前記二酸化炭素ガスを前記タンク内に注入する
請求項1から3の何れか一項に記載の船舶。 - 前記二酸化炭素注入部は、
前記タンク内に貯留された前記液化二酸化炭素の揺れが、所定レベルとなった場合に、前記二酸化炭素ガスを前記タンク内に注入する
請求項1から4の何れか一項に記載の船舶。 - 請求項1から5の何れか一項に記載の船舶におけるタンクの圧力調整方法であって、
前記タンク内の圧力に関する情報、および前記タンク内に貯留された前記液化二酸化炭素の揺れに関する情報の少なくとも一方を取得する工程と、
取得された前記情報に基づき、前記二酸化炭素注入部で前記二酸化炭素ガスを前記タンク内に注入する工程と、を含む
船舶におけるタンクの圧力調整方法。
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EP22780536.3A EP4296155A1 (en) | 2021-03-31 | 2022-03-25 | Watercraft, and method for adjusting pressure of tank in watercraft |
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JP2021059785A (ja) | 2016-10-26 | 2021-04-15 | ゼネラル・エレクトリック・カンパニイ | 積層造形法のための方法及び熱的構造体 |
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2021
- 2021-03-31 JP JP2021059785A patent/JP2022156205A/ja active Pending
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2022
- 2022-03-25 KR KR1020237032262A patent/KR20230147180A/ko unknown
- 2022-03-25 WO PCT/JP2022/014236 patent/WO2022210322A1/ja active Application Filing
- 2022-03-25 AU AU2022249776A patent/AU2022249776A1/en active Pending
- 2022-03-25 EP EP22780536.3A patent/EP4296155A1/en active Pending
- 2022-03-25 CN CN202280022879.2A patent/CN117043057A/zh active Pending
Patent Citations (6)
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JPH05180394A (ja) | 1991-12-26 | 1993-07-20 | Agency Of Ind Science & Technol | Co2固液変換型タンカーの荷役方法 |
JP2002349793A (ja) * | 2001-05-23 | 2002-12-04 | Mitsubishi Heavy Ind Ltd | 液化二酸化炭素貯蔵・排出装置および液化二酸化炭素海中投入システム |
JP2004125039A (ja) | 2002-10-01 | 2004-04-22 | Mitsubishi Heavy Ind Ltd | Co2運搬方法、流体貯蔵装置、プラグ発射装置、プラグ回収装置及び流体貯蔵方法 |
KR20110048266A (ko) * | 2009-11-02 | 2011-05-11 | 대우조선해양 주식회사 | 액화이산화탄소의 이송시스템 |
KR20140017800A (ko) * | 2012-08-01 | 2014-02-12 | 대우조선해양 주식회사 | 이산화탄소 운반선의 하역 시스템 |
JP2021059785A (ja) | 2016-10-26 | 2021-04-15 | ゼネラル・エレクトリック・カンパニイ | 積層造形法のための方法及び熱的構造体 |
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KR20230147180A (ko) | 2023-10-20 |
CN117043057A (zh) | 2023-11-10 |
AU2022249776A1 (en) | 2023-09-28 |
JP2022156205A (ja) | 2022-10-14 |
EP4296155A1 (en) | 2023-12-27 |
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