WO2019078048A1 - 二重殻タンクおよび船舶 - Google Patents
二重殻タンクおよび船舶 Download PDFInfo
- Publication number
- WO2019078048A1 WO2019078048A1 PCT/JP2018/037525 JP2018037525W WO2019078048A1 WO 2019078048 A1 WO2019078048 A1 WO 2019078048A1 JP 2018037525 W JP2018037525 W JP 2018037525W WO 2019078048 A1 WO2019078048 A1 WO 2019078048A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- inner tank
- metal sheet
- tank
- double shell
- adsorbent
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 79
- 239000002184 metal Substances 0.000 claims abstract description 79
- 239000000463 material Substances 0.000 claims abstract description 23
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- 238000001179 sorption measurement Methods 0.000 claims abstract description 10
- 239000003463 adsorbent Substances 0.000 claims description 41
- 238000009413 insulation Methods 0.000 claims description 12
- 239000012212 insulator Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
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- 229910052739 hydrogen Inorganic materials 0.000 description 3
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- 125000006850 spacer group Chemical group 0.000 description 3
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
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- 239000008187 granular material Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
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- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
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- 235000019362 perlite Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
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- 239000002356 single layer Substances 0.000 description 1
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Images
Classifications
-
- 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
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/49—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods by means of threaded members, e.g. screws, threaded bolts or nuts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/06—Coverings, e.g. for insulating purposes
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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
- F17C11/00—Use of gas-solvents or gas-sorbents in vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
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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
- B63B2231/00—Material used for some parts or elements, or for particular purposes
- B63B2231/02—Metallic materials
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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
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- 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
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- F17C2203/03—Thermal insulations
- F17C2203/0391—Thermal insulations by vacuum
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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
- F17C2203/00—Vessel construction, in particular walls or details thereof
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- F17C2203/0395—Getter
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
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- F17C2203/0629—Two walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0639—Steels
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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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/228—Assembling processes by screws, bolts or rivets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F17C2221/012—Hydrogen
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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
- F17C2221/016—Noble gases (Ar, Kr, Xe)
- F17C2221/017—Helium
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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
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
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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
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
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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
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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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
- F17C2223/033—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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Definitions
- the present invention relates to a vacuum double shell tank and a ship including the double shell tank.
- a double shell tank in which a vacuum space is formed between an inner tank storing liquefied gas and an outer tank surrounding the inner tank.
- Patent Document 1 discloses a double-shell tank in which a plurality of heat insulating films are laminated on an inner tank and an adsorbent is interposed between the heat insulating films.
- the adsorbent is in the form of granules and is welded to the surface of the heat insulation film.
- FIG. 2 of patent document 2 the double shell tank by which the getter material is arrange
- a getter material is used to adsorb the permeated hydrogen.
- the getter material adsorbs gas molecules by chemical adsorption (in Patent Document 2, it is presumed that hydrogen molecules are converted to water molecules by the getter material).
- an object of this invention is to provide the ship containing the double shell tank which can cool an adsorbent to the temperature of the bottom face of an inner tank at low cost, and this double shell tank.
- a double shell tank comprises an inner tank for storing liquefied gas, an outer tank which surrounds the inner tank and in which a vacuum space is formed between the inner tank and the inner tank. At least one metal sheet attached to the inner tank so that a part thereof faces the bottom surface of the inner tank, an adsorbent mounted on the metal sheet, which adsorbs gas molecules by physical adsorption, and And a heat insulator covering an inner tank and the metal sheet.
- the metal sheet having high thermal conductivity is attached to the inner tank so as to face the bottom surface of the inner tank, and the metal sheet is covered with the heat insulating material together with the inner tank. Therefore, when the liquefied gas is injected into the inner tank, the metal sheet is cooled to the same temperature as the bottom surface of the inner tank. And, since the adsorbent is placed on the metal sheet, the adsorbent can be cooled to the temperature of the bottom surface of the inner tank. In addition, since it is sufficient to place the adsorbent on the metal sheet, the effect can be obtained at low cost.
- the material of the metal sheet may be the same as the material of the inner tank. According to this configuration, although the inner tank is thermally shrunk when the liquefied gas is injected into the inner tank, the metal sheet is also thermally shrunk with the same linear expansion coefficient as the inner tank. Therefore, it is possible to prevent relative positional deviation between the inner tank and the metal sheet when the inner tank is thermally shrunk.
- the inner tub is provided with a plurality of stud bolts
- the heat insulating material includes a plurality of thermal insulation sheets
- the plurality of stud bolts are used to fix the metal sheet and the plurality of thermal insulation sheets Good. According to this configuration, both the metal sheet and the heat insulating sheet can be fixed by the common stud bolt, and the structure can be simplified.
- the at least one metal sheet may include a plurality of metal sheets, and ends of adjacent metal sheets may overlap with each other, and a stud bolt provided in the inner tank may penetrate through the overlapping portion. According to this configuration, the number of stud bolts can be reduced as much as possible.
- the adsorbent may be porous particles or powder and enclosed in a bag, and the metal sheet may have a plurality of openings formed therein. According to this configuration, gas molecules can collide with the adsorbent through the openings of the metal sheet.
- the ship of the present invention is characterized by including the above-described double shell tank.
- the adsorbent can be cooled to the temperature of the bottom surface of the inner tank at low cost.
- FIG. 2 is a cross-sectional view of the double shell tank taken along line II-II of FIG. It is the figure which expanded a part of FIG.
- FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 3;
- FIG. 5 is a bottom view as seen from line VV of FIG. 4;
- FIG. 1 shows a part of a ship 1 on which a double shell tank 2 according to an embodiment of the present invention is mounted.
- the double shell tank 2 has a cylindrical shape in which the axial direction is parallel to the ship length direction.
- the shape of the double shell tank 2 is not limited to this, and may be, for example, a spherical shape, a cubic shape or a rectangular shape.
- the double shell tank 2 includes an inner tank 3 for storing liquefied gas and an outer tank 6 surrounding the inner tank 3.
- a vacuum space 21 is formed between the inner tank 3 and the outer tank 6.
- the liquefied gas is, for example, liquefied petroleum gas (LPG, about -45 ° C), liquefied ethylene gas (LEG, about -100 ° C), liquefied natural gas (LNG, about -160 ° C), liquefied oxygen (LO 2 , about -180) C.), liquefied hydrogen (LH 2 , about -250 ° C.), liquefied helium (LHe, about -270 ° C.) and the like.
- LPG liquefied petroleum gas
- LEG liquefied ethylene gas
- LNG liquefied natural gas
- LO 2 liquefied oxygen
- LH 2 liquefied hydrogen
- LHe liquefied helium
- Each of the inner tank 3 and the outer tank 6 is, as shown in FIGS. 1 and 2, a body extending in the lateral direction with a constant cross-sectional shape, and a hemispherical blockade closing the opening on both sides of the body. It is configured. However, the closing portion may be flat or perpendicular to the body, or may be dish-shaped.
- the center line of the barrel of the outer tub 6 substantially coincides with the center line of the barrel of the inner tub 3, and the diameter of the barrel of the outer tub 6 is larger than the diameter of the inner tub 3.
- the outer tank 6 is supported at a position spaced apart from each other in the axial direction of the double shell tank 2 by a pair of saddles 12 provided on the ship bottom 11.
- a pair of support members 22 for supporting the inner tank 3 at the same position as the saddle 12 is disposed.
- the inner tank 3 is entirely covered with the heat insulating material 5 in the vacuum space 21.
- the heat insulating material 5 is composed of a plurality of heat insulating sheets.
- the cut of the heat insulating sheet is omitted.
- the heat insulation sheets are arranged without gaps along the outer surface of the inner tank 3.
- the heat insulating sheet may form a single layer, or may be stacked in the thickness direction to form a plurality of layers.
- each heat insulation sheet has a laminated structure of a plurality of layers.
- each heat insulation sheet includes radiation shield films and spacers stacked alternately.
- the radiation shield film may be, for example, an aluminum foil, or a film in which aluminum (may be gold or silver) is vapor-deposited on the surface of the resin sheet.
- the spacer is a sheet having a small thermal conductivity. As such a sheet, resin nets, woven fabrics, non-woven fabrics, etc., paper, glass fiber materials, etc. can be used.
- the heat insulating sheet may be made of glass wool.
- the adsorbent 4 is disposed between the inner tank 3 and the heat insulating material 5.
- the adsorbent 4 adsorbs gas molecules by physical adsorption.
- gases such as nitrogen, oxygen, water vapor and the like are released from the heat insulator 5 and the material surface of the inner tank 3 and the outer tank 6.
- the adsorbent 4 adsorbs the gas released from the heat insulator 5 and the material surface of the inner tank 3 and the outer tank 6 and plays a role of maintaining the degree of vacuum of the vacuum space 21.
- the adsorbent 4 is mounted on at least one metal sheet 7 as shown in FIGS. 3 and 4 (in FIGS. 1 and 2, drawing of the metal sheet 7 is omitted for simplification of the drawing) .
- the at least one metal sheet 7 is attached to the inner tank 3 such that at least a portion of the at least one metal sheet 7 faces the bottom surface of the inner tank 3.
- the heat insulating material 5 mentioned above has covered the inner tank 3 and the metal sheet 7.
- the “bottom surface” refers to a region of the outer surface of the inner tank 3 and having an angle of 45 degrees or less between the normal to the outer surface and the vertically downward direction with the lowermost point as a center.
- the cross-sectional shape of the bottom is a circular arc of 90 degrees in the horizontal direction, and a shape having a linear portion between the circular arcs of 45 degrees in the vertical direction. is there.
- the cross-sectional shape of the bottom is an arc of 90 degrees in any direction.
- a part of at least one metal sheet 7 faces the bottom surface of the inner tank 3 means that a part of the at least one metal sheet 7 is present in a range overlapping with the bottom surface of the inner tank 3 . Further, it is desirable that all the metal sheets 7 be in a range overlapping with the bottom surface of the inner tank 3. Furthermore, it is more desirable that at least one metal sheet 7 covers at least the lowest point of the bottom surface of the inner tank 3.
- the adsorbent 4 is disposed along the lower half of the barrel of the inner tank 3. Therefore, the plurality of metal sheets 7 are arranged to face the lower half of the outer peripheral surface of the trunk portion of the inner tank 3 in the same manner as the adsorbent 4.
- the material of the metal sheet 7 is the same as the material of the inner tank 3.
- the material of the inner tank 3 and the metal sheet 7 is stainless steel, a Ni-based alloy, an aluminum alloy or the like.
- each metal sheet 7 has a rectangular shape as shown in FIG. And the edge parts of the metal sheet 7 which adjoins are overlapping.
- stud bolts 9 are provided at positions corresponding to the four corners of the metal sheet 7. The stud bolt 9 passes through the overlapping portion of the adjacent metal sheets 7.
- the stud bolt 9 may penetrate the heat insulation sheet which comprises the heat insulating material 5.
- the stud bolt 9 is provided in the inner tank 3 via a metal base plate 31.
- the stud bolt 9 is joined to the base plate 31 by a screw structure, welding or the like, and the base plate 31 is joined to the inner tank 3 by welding or the like.
- the base plate 31 is circular in the illustrated example, the base plate 31 may be square.
- the material of the stud bolt 9 is not particularly limited, for example, it is desirable that the material has a low thermal conductivity such as glass fiber reinforced plastic (GFRP).
- GFRP glass fiber reinforced plastic
- the metal sheet 7 is in surface contact with the base plate 31. For this reason, good heat conduction is performed between the inner tank 3 and the metal sheet 7.
- the base plate 31 also functions as a spacer for securing a gap between the metal sheet 7 and the inner tank 3.
- a plurality of openings 71 are formed in each metal sheet 7. Therefore, gas molecules can collide with the adsorbent 4 through the openings 71 of the metal sheet 7.
- the openings 71 may be through holes drilled in a metal plate.
- the metal sheet 7 may be an expanded metal in which the rhombic openings 71 are arranged in a zigzag.
- the gas molecules in the vacuum space 21 can enter the adsorbent 4 from the periphery of the metal sheet 7 along the outer surface of the inner tank 3, the metal sheet 7 does not have the opening 71. It may be a plate.
- the adsorbent 4 described above is a porous particulate or powder and is enclosed in a bag.
- the bag in which the adsorbent 4 is enclosed is fixed to the metal sheet 7 by rivets.
- activated carbon, zeolite, silica gel, alumina or the like can be used.
- a pressing plate 8 is disposed outside the heat insulating material 5.
- the pressing plate 8 is fixed to the above-mentioned stud bolt 9 by a nut 91 and holds the metal sheet 7 and the heat insulating sheet constituting the heat insulating material 5. That is, the stud bolt 9 is used to fix the metal sheet 7 and the heat insulating sheet, and the pressing plate 8 presses the heat insulating material 5 and the metal sheet 7 against the base plate 31.
- the presser plate 8 is formed of a plurality of rod-like members extending to bridge the adjacent stud bolts 9.
- the metal sheet 7 having a high thermal conductivity is attached to the inner tank 3 so as to face the bottom surface of the inner tank 3 and Since the metal sheet 7 is covered with the heat insulating material 5 together with the inner tank 3, when the liquefied gas is injected into the inner tank 3, the metal sheet 7 is cooled to the same temperature as the bottom surface of the inner tank 3. And, since the adsorbent 4 is placed on the metal sheet 7, the adsorbent 4 can be cooled to the temperature of the bottom surface of the inner tank 3. In addition, since the adsorbent 4 only needs to be placed on the metal sheet 7, the effect can be obtained at low cost.
- the liquefied gas when taken out from the double shell tank 2, the liquefied gas remains in the lower part of the double shell tank 2 until the double shell tank 2 becomes empty. Therefore, it is possible to maintain a high degree of vacuum while cooling the adsorbent 4 until just before the double shell tank 2 becomes empty.
- both the metal sheet 7 and the heat insulating sheet can be fixed by the common stud bolt 9 to simplify the structure. can do.
- the material of the metal sheet 7 may be different from the material of the inner tank 3.
- the inner tank 3 is thermally shrunk when the liquefied gas is injected into the inner tank 3, but the metal sheet 7 is also It shrinks with the same coefficient of linear expansion as the inner tank. Therefore, it is possible to prevent relative positional deviation between the inner tank 3 and the metal sheet 7 when the inner tank 3 is thermally shrunk.
- the end of the metal sheet 7 may be thick and the stud bolt 9 may be directly bonded to the inner tank 3.
- the edge part of the adjacent metal sheet does not necessarily need to overlap.
- the end portions of adjacent metal sheets 7 overlap each other as in the present embodiment, and the stud bolt 9 passes through the overlapping portion, the number of stud bolts 9 can be reduced as much as possible. .
- the heat insulating material 5 does not necessarily need to be comprised with a heat insulation sheet, for example, the granular material (for example, pearlite), glass wool etc. with which it filled with the inner tank 3 and the outer tank 6 may be sufficient.
- the heat insulating material 5 may be made of urethane foam.
- the heat insulation sheet having the laminated structure as described in the above embodiment exhibits much higher heat insulation performance in the vacuum space as compared with perlite, glass wool, and urethane foam. Therefore, the present invention is particularly effective when the heat insulating material 5 includes a plurality of heat insulating sheets for vacuum space.
- the present invention is applicable not only to tanks mounted on ships, but also to tanks installed on the ground.
- sloshing occurs in the inner tank 3 due to rolling or pitching of the hull.
- the metal sheet 7 and the inner tank 3 are mechanically fastened by the stud bolt 9 against such sloshing, the metal sheet 7 and the adsorbing material 4 are fixed by the rivet, so that the swing environment The adsorbent can also be arranged stably. Therefore, the configuration of the embodiment is particularly useful for a tank mounted on a ship.
- Reference Signs List 1 ship 2 double shell tank 21 vacuum space 3 inner tank 4 adsorbent 5 heat insulating material 6 outer tank 7 metal sheet 8 presser plate 9 stud bolt
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
Description
本発明は上述した実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変形が可能である。
2 二重殻タンク
21 真空空間
3 内槽
4 吸着材
5 断熱材
6 外槽
7 金属シート
8 押え板
9 スタッドボルト
Claims (6)
- 液化ガスを貯留する内槽と、
前記内槽を取り囲み、前記内槽との間に真空空間が形成される外槽と、
少なくとも一部が前記内槽の底面と対向するように前記内槽に取り付けられた少なくとも1つの金属シートと、
前記金属シート上に載置された、気体分子を物理吸着により吸着する吸着材と、
前記内槽および前記金属シートを覆う断熱材と、
を備える、二重殻タンク。 - 前記金属シートの材質は、前記内槽の材質と同一である、請求項1に記載の二重殻タンク。
- 前記内槽には複数のスタッドボルトが設けられており、
前記断熱材は、複数の断熱シートを含み、
前記複数のスタッドボルトは、前記金属シートおよび前記複数の断熱シートの固定に使用される、請求項1または2に記載の二重殻タンク。 - 前記少なくとも1つの金属シートは、複数の金属シートを含み、
隣り合う前記金属シートの端部同士が重なり合っており、この重なり合う部分を前記内槽に設けられたスタッドボルトが貫通している、請求項1~3の何れか一項に記載の二重殻タンク。 - 前記吸着材は、多孔性の粒状体または粉体であって袋に封入されており、
前記金属シートには、複数の開口が形成されている、請求項1~4の何れか一項に記載の二重殻タンク。 - 請求項1~5の何れか一項に記載の二重殻タンクを備える船舶。
Priority Applications (5)
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CN201880066882.8A CN111213003B (zh) | 2017-10-16 | 2018-10-09 | 双层壳罐以及船舶 |
KR1020207013131A KR102295582B1 (ko) | 2017-10-16 | 2018-10-09 | 이중 쉘 탱크 및 선박 |
JP2019549215A JP6860689B2 (ja) | 2017-10-16 | 2018-10-09 | 二重殻タンクおよび船舶 |
US16/756,794 US11247752B2 (en) | 2017-10-16 | 2018-10-09 | Double-shell tank and ship |
EP18868420.3A EP3699476B1 (en) | 2017-10-16 | 2018-10-09 | Double shell tank and ship |
Applications Claiming Priority (2)
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JP2017-200327 | 2017-10-16 | ||
JP2017200327 | 2017-10-16 |
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WO2019078048A1 true WO2019078048A1 (ja) | 2019-04-25 |
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PCT/JP2018/037525 WO2019078048A1 (ja) | 2017-10-16 | 2018-10-09 | 二重殻タンクおよび船舶 |
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US (1) | US11247752B2 (ja) |
EP (1) | EP3699476B1 (ja) |
JP (1) | JP6860689B2 (ja) |
KR (1) | KR102295582B1 (ja) |
CN (1) | CN111213003B (ja) |
WO (1) | WO2019078048A1 (ja) |
Cited By (2)
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WO2022144971A1 (ja) | 2020-12-28 | 2022-07-07 | 川崎重工業株式会社 | 多重殻タンク及び船舶 |
CN116238815A (zh) * | 2023-03-22 | 2023-06-09 | 江苏大学 | 一种基于热能存储的低碳恒温物流运输储罐 |
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KR102513987B1 (ko) * | 2022-05-06 | 2023-03-27 | 에스탱크엔지니어링(주) | 액화수소 저장탱크 |
KR102513985B1 (ko) * | 2022-05-06 | 2023-03-24 | 에스탱크엔지니어링(주) | 액화수소 저장탱크 |
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- 2018-10-09 CN CN201880066882.8A patent/CN111213003B/zh active Active
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Also Published As
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US11247752B2 (en) | 2022-02-15 |
EP3699476A1 (en) | 2020-08-26 |
CN111213003B (zh) | 2021-09-21 |
JP6860689B2 (ja) | 2021-04-21 |
CN111213003A (zh) | 2020-05-29 |
EP3699476B1 (en) | 2023-11-29 |
KR102295582B1 (ko) | 2021-08-30 |
KR20200060506A (ko) | 2020-05-29 |
EP3699476A4 (en) | 2021-07-07 |
US20200239110A1 (en) | 2020-07-30 |
JPWO2019078048A1 (ja) | 2020-10-22 |
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