GB2470122A - Subsea storage for high-pressure liquid carbon dioxide - Google Patents

Subsea storage for high-pressure liquid carbon dioxide Download PDF

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Publication number
GB2470122A
GB2470122A GB1007533A GB201007533A GB2470122A GB 2470122 A GB2470122 A GB 2470122A GB 1007533 A GB1007533 A GB 1007533A GB 201007533 A GB201007533 A GB 201007533A GB 2470122 A GB2470122 A GB 2470122A
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GB
United Kingdom
Prior art keywords
storage
carbon dioxide
subsea
storage space
space
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Granted
Application number
GB1007533A
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GB201007533D0 (en
GB2470122B (en
Inventor
Dae-Jun Chang
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Korea Advanced Institute of Science and Technology KAIST
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Korea Advanced Institute of Science and Technology KAIST
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Publication of GB2470122A publication Critical patent/GB2470122A/en
Application granted granted Critical
Publication of GB2470122B publication Critical patent/GB2470122B/en
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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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/007—Underground or underwater storage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D9/00—Apparatus or devices for transferring liquids when loading or unloading ships
    • B67D9/02—Apparatus or devices for transferring liquids when loading or unloading ships using articulated pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0138—Shape tubular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0166—Shape complex divided in several chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0171—Shape complex comprising a communication hole between chambers
    • 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
    • F17C2201/0176—Shape variable
    • F17C2201/019—Shape variable with pistons
    • 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
    • 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
    • F17C2203/0614—Single wall
    • F17C2203/0617—Single wall with one layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0184—Attachments to the ground, e.g. mooring or anchoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0391—Arrangement of valves, regulators, filters inside the pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—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)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/013—Single phase liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/035—High pressure, i.e. between 10 and 80 bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/046—Localisation of the filling point in the liquid
    • F17C2225/047—Localisation of the filling point in the liquid with a dip tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0121—Propulsion of the fluid by gravity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0171—Arrangement
    • F17C2227/0185—Arrangement comprising several pumps or compressors
    • 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
    • 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
    • F17C2250/061—Level of content in the vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • F17C2260/025—Reducing transfer time
    • 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
    • F17C2265/03—Treating the boil-off
    • F17C2265/031—Treating the boil-off by discharge
    • 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
    • F17C2265/04—Effects achieved by gas storage or gas handling using an independent energy source, e.g. battery
    • 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
    • F17C2270/0118—Offshore
    • F17C2270/0128—Storage in depth
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

A subsea high-pressure liquid carbon dioxide storage equipment includes a carrier 101 for holding and carrying high-pressure liquid carbon dioxide; a water-surface power supply equipment 130 arranged on the surface of the water to supply power; a subsea storage equipment 120 having high-pressure liquid carbon dioxide stored therein; a relay flotation tank 110 having high-pressure liquid carbon dioxide stored therein; and an undersea injection pump 140 configured to inject high-pressure liquid carbon dioxide into an undersea storage base 100 and fixedly provided in the seabed. The storage equipment 120 may comprise a buoyancy controller using seawater influx and discharge pumps to regulate the buoyancy of the storage tank 120. The storage installation may feature measuring units or sensors to measure the amount of liquid CO2 and non-condensable gases in the storage space 100.

Description

SUBSEA HIGH-PRESSURE LIOUID CARBON DIOXIDE STORAGE
[0001] The present invention relates to the subsea storage of high-pressure liquid carbon dioxide.
[0002] In order to store carbon dioxide, crude carbon dioxide is produced and subjected to a recovery process to separate pure carbon dioxide, which is then concentrated under pressure. At this time, the concentrated carbon dioxide is transformed into a liquid phase under high pressure, and is transmitted into a storage tank through pipelines or carriers for transportation. It has been known that it is advantageous to employ the pipelines when a transportation distance to the storage tank is less than 1,000 km, but it is economical to use carriers in the case of long-distance oversea transportations greater than 1,000 km. The transported carbon dioxide may be stored in the ocean, the underground, the surface of the earth, etc. However, ocean storage is now sustained due to the marine ecosystem problems, and the ground storage is at the early technical stage of causing the problems associated with the storage facilities of minerals that are used to fix carbon dioxide. However, the underground storage is a representative technology that has made lots of attempts to store carbon dioxide in the geological stratum deep in the inland or the seabed.
[0003] The underground storage method is now described in detail, as follows.
This storage method is used to forcibly inject carbon dioxide into a certain geological structure of the underground and to confine the carbon dioxide without leakage for a long time of period. This method has developed with the aim of reducing the viscosity of petroleum to enhance the efficiencies of the oil wells, as well as the processing and reduction of the carbon dioxide. The storage capacity of carbon dioxide in ground storage sites that have been found until now is estimated to be about 800 Gt, and the capacity of carbon dioxide to be stored in all the undergrounds is assumed to be 2,000 Gt (Yoo, DongGeun et a!., the Korean Society for Geosystem engineering, 44 (6), 572-585, 2007). The most adequate sites for storing carbon dioxide in the underground storage include deep saline formations (aquifers), oil/gas
fields, coal layers, etc.
[0004] Meanwhile, a technology of injecting substances such as seawater, gases and carbon dioxide into void spaces from which the crude petroleum is extracted after the production of the crude petroleum in the oil fields has been widely used in the art. FIG. 1 is a conceptual view illustrating such technology.
[0005] The seawater or gas injection is shown in FIG. 1(A). In general, crude petroleum is present in a confined space in the underground. That is, a rock layer is formed on the crude petroleum, and a rock layer or a water layer is formed under the crude petroleum. When the crude petroleum is extracted from an oil well, a space is formed in the oil well corresponding to the amount of produced crude petroleum, which leads to a decrease in the pressure of the oil field. n order to compensate for the decrease in the pressure, seawater or gas should be injected into the oil field.
That is, the seawater or gas is injected into the oil field to increase the pressure of the oil field on the one hand, and the crude petroleum is continuously produced on the other hand. The subsea separation and injection method uses the facilities as shown in FIG. 1 (B), which are installed in the sea floor and has the similar concept to that of the seawater or gas injection. That is, water as well as crude petroleum is produced while carrying out the production of the crude petroleum. In this case, the water is separated in the sea floor and re-injected into the oil field. FIG. 1 (C) shows a carbon dioxide sequestration method. This method has the similar concept to those of the two methods in that the carbon dioxide instead of the seawater or gas is re-
injected into the oil field
[0006] As described above, carbon dioxide is injected into the oil field in the same principle of injecting the seawater, gases and the like so as to readily produce crude petroleum from the oil field. Therefore, it is common to store carbon dioxide in the depleted oil fields such as the undergrounds. As described above, pipelines or transport ships should be used to store the carbon dioxide in the undergrounds. Tn this regard, it is not difficult to install pipelines in the oil fields on the earth, but it is relatively problematic to store carbon dioxide in the undersea oil fields or void undersea spaces. Generally, the use of the carriers is necessary to store carbon dioxide in the undersea storage bases, but the undersea oil fields are subject to geographical restrictions at storing the carbon dioxide since their positions remain fixed. Also, the use of the carriers has various problems in that it takes much time to load the carbon dioxide in the carriers into the undersea storage base, and the carriers should be anchored in one position during the cargo-working operations. Therefore, there have been ardent attempts to solve the above-mentioned problems.
[0007] Accordingly, embodiments are designed to solve the problems of the prior art. It is essentially an object of embodiments to provide a subsea high-pressure liquid carbon dioxide storage installation capable of shortening the voyage distance of carriers, saving cargo-working time and reducing the power required to load carbon dioxide into an undersea storage base, as well as the power required to maintain the devices themselves, by temporarily storing carbon dioxide in the water for the purpose of final storage of the carbon dioxide in the seabed.
[00081 According to an aspect of the present invention, there is provided a subsea high-pressure liquid carbon dioxide storage installation including a carrier 101 for holding and carrying high-pressure liquid carbon dioxide; a water-surface power supply equipment 130 arranged on the surface of the water to supply power; a subsea storage equipment 120 having high-pressure liquid carbon dioxide stored therein, connected and fixed in the seabed by means of a subsea fixing line 123 and arranged to float deep in the sea water, the subsea storage equipment 120 being connected through a first subsea transmission pipe 111 to receive carbon dioxide from the carrier 101 and being connected through a first water-surface power supply line 103 for receiving power from the carrier 101 or connected through a second water-surface power supply line 122 for receiving power from the water-surface power supply equipment 130; a relay flotation tank 110 having high-pressure liquid carbon dioxide stored therein, and arranged to float on the surface of the water, the relay flotation tank 110 being connected through a water-surface transmission pipe 102 for receiving carbon dioxide from the carrier 101 and connected through a second subsea transmission pipe 112 for receiving carbon dioxide from the subsea storage equipment 120; and an undersea injection pump 140 configured to inject high-pressure liquid carbon dioxide into an undersea storage base and fixedly provided in the seabed, the undersea injection pump 140 being connected through an undersea injection pipe 121 for receiving carbon dioxide from the subsea storage equipment 120 or for receiving power from the water-surface power supply equipment 130.
[0009] The subsea storage equipment 120 may be provided with an induction pipe 210 that is connected with the first or second subsea transmission pipe 111 or 112 to receive high-pressure liquid carbon dioxide, and has an internal space divided into an induction space and a storage space by means of an induction pipe partition 212, the induction pipe partition 212 having an open portion of the inner ceiling thereof and the storage space consisting in the other space rather than the induction space, for supplying liquid carbon dioxide stored in the storage space to the undersea injection pump 140 via the induction space, and the subsea storage equipment 120 may also include a floor valve 211 provided in the induction pipe 210 for controlling the supply rate of carbon dioxide; a non-condensable gas discharging unit 252 provided in an upper portion of the storage space for discharging non-condensable gas included in the upper portion of the storage space; and a buoyancy controller using the seawater.
[0010] The buoyancy controller may include a seawater discharge pump 221 provided in a lower portion of the storage space for discharging seawater included in the lower portion of the storage space; and a seawater influx pump 222 provided in a lower portion of the storage space for enabling the influx of seawater into the lower portion of the storage space. In this case, the buoyancy controller may further include an introduced seawater processing unit 223 connected with the seawater influx pump 222 for processing the introduced seawater. Also, the buoyancy controller may further include a seawater level measuring unit 231 provided in a lower portion of the storage space for measuring a water level of the seawater included in the storage space.
[0011] In addition, the buoyancy controller may be formed so that the storage space can have an open bottom and a piston bed can be provided in the open bottom.
Also, the buoyancy controller may be formed so that the storage space can have an open bottom and a modifiable separator can be provided in the open bottom. In this case, the subsea storage equipment 120 may further include a buoyant body attached to one side of the subsea storage equipment 120.
[0012] Additionally, the subsea storage equipment 120 may further include a liquid carbon dioxide level measuring unit 232 provided in one side of the storage space to measure a level of the liquid carbon dioxide included in the storage space.
[0013] Furthermore, the subsea storage equipment 120 may further include a non-condensable gas pressure measuring unit 251 provided in an upper portion of the storage space to measure a pressure of the non-condensable gas included in the storage space.
[0014] Other features and aspects will be apparent from the following detailed
description, the drawings, and the claims.
[0015] In the drawings: [0016] FIG. 1 is a diagram showing conventional underground storage technologies.
[0017] FIG. 2 is a perspective view showing high-pressure liquid carbon dioxide storage equipment of a first embodiment of the present invention.
[0018] FIG. 3 is a diagram showing a subsea storage equipment of the first embodiment.
[0019] FIG. 4 is a diagram showing a subsea storage equipment of a second embodiment.
[00201 FIG. 5 is a diagram showing a subsea storage equipment of a third embodiment.
[0021] FIG. 6 is a diagram showing a subsea storage equipment of a fourth embodiment [0022] Hereinafter, the subsea high-pressure liquid carbon dioxide storage equipment of the embodiments will be described in detail with reference to the accompanying drawings.
[0023] FIG. 2 shows a schematic overall system of the subsea high-pressure liquid carbon dioxide storage equipment according to the present invention. The subsea high-pressure liquid carbon dioxide storage equipment according to the present invention includes a carrier 101 for holding and carrying high-pressure liquid carbon dioxide; a water-surface power supply equipment 130 arranged on the surface of the water to supply power; a subsea storage equipment 120 and a relay flotation tank 110 having high-pressure liquid carbon dioxide stored therein; and an undersea injection pump 140 configured to inject high-pressure liquid carbon dioxide into an undersea storage base, as shown in FIG. 2.
[0024] The subsea storage equipment 120 has high-pressure liquid carbon dioxide stored in the inner space thereof, as described above. As shown in FIG. 2, the subsea storage equipment 120 is fixed in the seabed by means of a subsea fixing line 123, and is arranged to float deep in the seawater. In this case, the subsea storage equipment 120 is connected through a first subsea transmission pipe 111 to receive carbon dioxide from the carrier 101. Also, the subsea storage equipment 120 is connected through a first water-surface power supply line 103 to receive power from the carrier 101, or is connected through a second water-surface power supply line 122 to receive power from the water-surface power supply equipment 130.
Ether the first water-surface power supply line 103 or the second water-surface power supply line 122 may be provided in the subsea storage equipment 120, but it does not matter if both are provided in the subsea storage equipment 120.
[0025] The relay flotation tank 110 has high-pressure liquid carbon dioxide stored in the inner space thereof, as described above. As shown in FIG. 2, the relay flotation tank 110 is arranged to float on the surface of the water. In this case, the relay flotation tank 110 is connected through a water-surface transmission pipe 102 to receive carbon dioxide from the carrier 101, and is connected through a second subsea transmission pipe 112 to receive carbon dioxide from the subsea storage equipment 120. Most of the carbon dioxide included in the carrier 101 is substantially supplied through the relay flotation tank 110.
[0026] As described above, the undersea injection pump 140 is configured to inject high-pressure liquid carbon dioxide into the undersea storage base. As shown in FIG. 2, the undersea injection pump 140 is fixed in the seabed. In this case, the undersea injection pump 140 is connected through an undersea injection pipe 121 to receive carbon dioxide from the subsea storage equipment 120, and is connected through a subsea power supply line 122 to receive power from the subsea storage equipment 120. Of course, although not shown in FIG. 2, it does not matter if, like the subsea storage equipment 120, the undersea injection pump 140 is directly connected with the water-surface power supply equipment 130 to receive power from the water-surface power supply equipment 130, That is, the undersea injection pump may be connected to either the subsea storage equipment 120 or the water-surface power supply equipment 130 to receive the power, but it does not matter if the undersea injection pump 140 is connected with both to receive the power.
[0027] As described above, the subsea high-pressure liquid carbon dioxide storage equipment according to the present invention is configured to receive carbon dioxide from either the relay flotation tank 110 or the carrier 101 while the subsea storage equipment 120 is floating deep in the water, and is in fact configured to inject the carbon dioxide stored in the subsea storage equipment 120 into the undersea storage base (using the undersea injection pump 140). In this way, the carrier 101 is not necessarily directly connected with the undersea injection pump 140, which allows the carrier 101 to ship in a relatively free manner.
[0028] Also, the subsea high-pressure liquid carbon dioxide storage equipment according to the present invention has merits, as follows. The undersea injection pump 140 is connected and installed in the undersea storage base. In this case, the undersea injection pump 140 has economic and technical problems of installing a plurality of injection pumps since the seabed is perforated to the undersea oil field or the void undersea spaces for the installations of the injection pumps. As a result, it is difficult to install a plurality of the undersea injection pumps 140. That is, when a plurality of the carriers 101 arrive at the storage facility at the same time, the carriers 101 are connected one by one with the undersea injection pump 140, thus one of the carriers is connected to load carbon dioxide into the storage facility, and thus the carriers should wait, which results in lost of the time loss. However, in the present invention, the carbon dioxide is first temporarily stored in the subsea storage equipment 120, and is then injected from the subsea storage equipment 120 into the undersea storage base. Therefore, although the undersea injection pump 140 is installed in the single number, the carbon dioxide may be simultaneously loaded from a plurality of the carriers 101 in case the first and second subsea transmission pipes 111 and 112 are installed in the plural number. Therefore, it is possible to increase the working efficiency by significantly reducing the waiting time of the carriers 101.
[0029] FIG. 3 shows a subsea storage equipment of a first embodiment of the present invention. As shown in FIG. 3, the subsea storage equipment 120 according to the first embodiment of the present invention is provided with an induction pipe 210 that is connected with the first or second subsea transmission pipe 111 or 112 to receive high-pressure liquid carbon dioxide, and has an internal space divided into an induction space and a storage space by means of an induction pipe partition 212, the induction pipe partition 212 having an open portion of the inner ceiling thereof and the storage space consisting in the other space rather than the induction space, for supplying liquid carbon dioxide stored in the storage space to the undersea injection pump 140 via the induction space. In this case, the induction space is preferably formed with a relatively small volume than that the storage space, as shown in FIG. 3.
Since the subsea storage equipment 120 is floating deep in the sea water, the high hydraulic pressure is applied to the subsea storage equipment 120, which makes it easy to inject the high-pressure liquid carbon dioxide into the undersea base using a hydrostatic pressure. Therefore, it is possible to significantly reduce the power used to operate the undersea injection pump 140, thereby achieving the effects of saving the natural resources and enhancing their efficiencies as well. Also, the subsea storage equipment 120 has a floor valve 211 provided in the induction pipe 210 for controlling the supply rate of carbon dioxide; a non-condensable gas discharging unit 252 provided in an upper portion of the storage space for discharging non-condensable gas included in the upper portion of the storage space; and a buoyancy controller using the seawater.
[0030] In this case, according to the first embodiment, the buoyancy controller is configured including a seawater discharge pump 221 provided in a lower portion of the storage space for discharging the seawater included in the lower portion of the storage space; and a seawater influx pump 222 provided in a lower portion of the storage space for enabling the influx of seawater into the lower portion of the storage space.
[0031] The procedure of storing carbon dioxide is now described in detail, as follows. When high-pressure liquid carbon dioxide is supplied to the subsea storage equipment 120, which remains vacant at the very beginning, through the induction pipe 210 held in the induction space, the liquid carbon dioxide is first filled in the induction space (since the lower portion of the induction space is blocked by the induction pipe partition 212). In this case, the induction pipe partition 212 has an open portion of the inner ceiling thereof, and thus the liquid carbon dioxide overflows from the induction space to the storage space after the induction space is filled with the liquid carbon dioxide. In this case, the liquid carbon dioxide is supplied through the floor valve 211. Also, the supply of the carbon dioxide is easily made by means of the hydrostatic pressure.
[00321 A buoyancy controller is provided in the storage space to adjust the buoyancy of the subsea storage equipment 120. According to the first embodiment, some of the storage space is filled with the seawater so as to control the buoyancy.
The amount of the seawater may be adjusted by the seawater discharge pump 221 and the seawater influx pump 222. When the buoyancy of the subsea storage equipment 120 is too high, a tensile force caused by pulling the subsea fixing line 123 may increase to an undesired level, whereas the subsea storage equipment 120 will float too close to the seabed when the buoyancy is too low. Therefore, the seawater discharge pump 221 and the seawater influx pump 222 are used to control the buoyancy of the subsea storage equipment 120 by adjusting the amount of the seawater to an adequate level. In this case, since the internal pressure and external hydrostatic pressure of the subsea storage equipment 120 are substantially similar to each other, the seawater discharge pump 221 and the seawater influx pump 222 may be driven with a relatively low power, resulting in the significant saving of the natural resources. In this case, the subsea storage equipment 120 preferably further include an introduced seawater processing unit 223 that is connected with the seawater influx pump 222 for processing the seawater, as shown in FIG. 3.
[0033] The liquid carbon dioxide and seawater included in the storage space are separated as upper and lower layers owing to their density difference, as shown in FIG. 3. (The liquid carbon dioxide is present in the upper layer, and the seawater is present in the lower layer.) The subsea storage equipment 120 preferably further include a seawater level measuring unit 231 provided in a lower portion of the storage space for measuring a water level of the seawater included in the storage space; and a liquid carbon dioxide level measuring unit 232 provided in one side of the storage space for measuring a level of the liquid carbon dioxide included in the storage space.
[0034] Also, non-condensable gases (nitrogen, oxygen, etc) which are dissolved in the carbon dioxide or seawater may be present in the upper portion of the storage space. Here, the non-condensable gases may be maintained in a gaseous state since their liquefaction pressures are different from the carbon dioxide. Accordingly, the non-condensable gas discharging unit 252 provided in the upper portion of the storage space may facilitate the maintenance of the purity of the stored carbon dioxide by discharging the non-condensable gases included in the upper portion of the storage space. In addition, the subsea storage equipment 120 preferably further includes a non-condensable gas pressure measuring unit 251 provided in the upper portion of the storage space for measuring a pressure of the non-condensable gases included in the storage space.
[0035] FIG. 4 is a diagram illustrating a subsea storage equipment according to the second embodiment of the present invention, which shows that a portion of the storage space is in the form of a round container. When the portion of the storage space is in the form of a round container, the storage space is able to resist the pressure in more effective manner.
[0036] FIG. 5 is a diagram illustrating a subsea storage equipment according to the third embodiment of the present invention, which shows that, unlike the first and second embodiments, the piston-shaped bed is provided instead of a pump to discharge the seawater. More particularly, according to the third embodiment, the buoyancy controller is formed so that the storage space can have an open bottom and a piston bed can be provided in the open bottom. That is, the influx of seawater is unnecessary so as to control the buoyancy. Also, it is not problematic in that a small amount of the introduced seawater flows down to the bottom of the storage space. In particular, since the internal pressure and external hydraulic pressure of the subsea storage equipment 120 are identical to each other, it does not matter if the piston does not have high hardness, and subsea storage equipment 120 is not completely sealed.
[0037] FIG. 6 is a diagram illustrating a subsea storage equipment according to the fourth embodiment of the present invention, which shows that this embodiment is configured in the similar principle of the third embodiment but a separator is provided instead of the piston bed. More particularly, according to the fourth embodiment, the buoyancy controller is formed so that the storage space can have an open bottom and a modifiable separator can be provided in the open bottom. In this case, since the internal pressure and external hydraulic pressure of the subsea storage equipment 120 are identical to each other, it does not matter if the modifiable separator does not have high hardness.
[0038] In this case, since the decrease in the amount of the carbon dioxide causes the reduction in the buoyancy according to the third and fourth embodiment, the subsea storage equipment 120 preferably further include a buoyant body attached to one side of the subsea storage equipment 120 so as to maintain a tensile force of the subsea fixing line 123 to an adequate level.
[0039] As described, since intermediate storage devices in the water are used to store high-pressure liquid carbon dioxide in the undersea storage base, the carriers may ship to the undersea storage base, and load the high-pressure liquid carbon dioxide into the undersea storage base without their anchorages, which allows the carriers to ship in a relatively free manner and results in the shortening of the voyage distance. Also, the subsea high-pressure liquid carbon dioxide storage equipment according to the present invention may be useful to significantly save the cargo-working time since the other carriers do not need to wait until one carrier finishes the injection of the carbon dioxide. Of course, it is possible to reduce the consumption of energy resources that are used for the plying of the carriers, and to highly enhance the efficiency of the entire system.
[0040] In addition, according to the present invention, the storage containers have effects such as low design pressure. That is, when the high-pressure liquid carbon dioxide is stored in the storage container, the internal pressure of the storage container is approximately 60 millibars. However, since the storage equipment is arranged in the water according to one embodiment of the present invention, the counter force is generated by the hydraulic pressure, which makes it possible to decrease the design pressure. Therefore, the subsea high-pressure liquid carbon dioxide storage equipment according to the present invention has an economic effect of reducing the manufacturing cost of the storage containers.
[0041] Furthermore, the present invention has the advantage that no power is consumed to transmit the high-pressure liquid carbon dioxide from the carriers since the carbon dioxide flows down by means of the hydrostatic pressure. That is, the present invention has the advantageous effect of significantly reducing the overall economic expense since it is possible to highly reduce the consumption of resources used during the cargo-working operations (as well as to reduce the consumption of resources used during the voyage of the carriers by reducing the voyage distance of the carriers).
[0042] While the present invention has been shown and described in connection with the embodiments, it will be apparent to those skilled in the art that modifications and variations can be made without departing from the scope of the invention.

Claims (11)

  1. [0043] CLAIMS: 1. A storage installation for sub sea high-pressure liquid carbon dioxide storage, the installation comprising: a carrier 101 for holding and carrying high-pressure liquid carbon dioxide; a water-surface power supply equipment 130 arranged on the surface of the water to supply power; subsea storage equipment 120 having high-pressure liquid carbon dioxide stored therein, connected and fixed in the seabed by means of a subsea fixing line 123 and arranged to float deep in the sea water, the subsea storage equipment 120 being connected through a first subsea transmission pipe 111 to receive carbon dioxide from the carrier 101 and being connected through a first water-surface power supply line 103 for receiving power from the carrier 101 or connected through a second water-surface power supply line 122 for receiving power from the water-surface power supply equipment 130; a relay flotation tank 110 having high-pressure liquid carbon dioxide stored therein, and arranged to float on the surface of the water, the relay flotation tank 110 being connected through a water-surface transmission pipe 102 for receiving carbon dioxide from the carrier 101 and connected through a second subsea transmission pipe 112 for receiving carbon dioxide from the subsea storage equipment 120; and an undersea injection pump 140 configured to inject high-pressure liquid carbon dioxide into an undersea storage base and fixedly provided in the seabed, the undersea injection pump 140 being connected through an undersea injection pipe 121 for receiving carbon dioxide from the storage equipment 120 or for receiving power from the water-surface power supply equipment 130.
  2. 2. A storage installation according to claim 1, wherein the storage equipment 120 is provided with an induction pipe 210 that is connected with the first or second subsea transmission pipe 111 or 112 to receive high-pressure liquid carbon dioxide, and has an internal space divided into an induction space and a storage space by means of an induction pipe partition 212, the induction pipe partition 212 having an open portion of the inner ceiling thereof and the storage space consisting in the other space rather than the induction space, for supplying liquid carbon dioxide stored in the storage space to the undersea injection pump 140 via the induction space, and wherein the storage equipment 120 comprises: a floor valve 211 provided in the induction pipe 210 for controlling the supply rate of carbon dioxide; a non-condensable gas discharging unit 252 provided in an upper portion of the storage space for discharging non-condensable gas included in the upper portion of the storage space; and a buoyancy controller configured to use the seawater.
  3. 3. A storage installation according to claim 2, wherein the buoyancy controller comprises: a seawater discharge pump 221 provided in a lower portion of the storage space for discharging seawater included in the lower portion of the storage space; and a seawater influx pump 222 provided in a lower portion of the storage space for enabling the influx of seawater into the lower portion of the storage space.
  4. 4. A storage installation according to claim 3, wherein the buoyancy controller further comprises: an introduced seawater processing unit 223 connected with the seawater influx pump 222 for processing the introduced seawater.
  5. 5. A storage installation according to claim 3, wherein the storage equipment 120 further comprises: a seawater level measuring unit 231 provided in a lower portion of the storage space for measuring a water level of the seawater included in the storage space.
  6. 6. A storage installation according to claim 2, wherein the buoyancy controller is formed so that the storage space has an open bottom and a piston bed is provided in the open bottom.
  7. 7. A storage installation according to claim 2, wherein the buoyancy controller is formed so that the storage space has an open bottom and a modifiable separator is provided in the open bottom.
  8. 8. A storage installation according to claim 6 or 7, wherein the subsea storage equipment 120 further comprises: a buoyant body attached to one side of the storage equipment 120.
  9. 9. A storage installation according to claim 2, further comprising: a liquid carbon dioxide level measuring unit 232 provided in one side of the storage space to measure a level of the liquid carbon dioxide included in the storage space.
  10. 10. A storage installation according to claim 2, further comprising: a non-condensable gas pressure measuring unit 251 provided in an upper portion of the storage space to measure a pressure of the non-condensable gas included in the storage space.
  11. 11. A storage installation as hereinbefore described with reference to and as shown in any of Figures 2 to 6 of the accompanying drawings.Amendments to the claims have been filed as follows CLAIMS: 1. A storage installation for subsea high-pressure liquid carbon dioxide storage, the installation comprising: a carrier for holding and carrying high-pressure liquid carbon dioxide; a water-surface power supply equipment arranged on the surface of the water to supply power; subsea storage equipment having high-pressure liquid carbon dioxide stored therein, connected and fixed in the seabed by means of a subsea fixing line and 1 0 arranged to float deep in the sea water, the subsea storage equipment being connected through a first subsea transmission pipe to receive carbon dioxide from the calTier and being connected through a first water-surface power supply line for receiving power from the carrier or connected through a second water-surface power supply line for receiving power from the water-surface power supply equipment; 1 5 a relay flotation tank having high-pressure liquid carbon dioxide stored therein, * and arranged to float on the surface of the water, the relay flotation tank being connected through a water-surface transmission pipe for receiving carbon dioxide from the carrier and connected through a second subsea transmission pipe for receiving carbon dioxide from the subsea storage equipment; and an undersea injection pump configured to inject high-pressure liquid carbon dioxide into an undersea storage base and fixedly provided in the seabed, the undersea injection pump being connected through an undersea injection pipe for receiving carbon dioxide from the storage equipment or for receiving power from the water-surface power supply equipment.2. A storage installation according to claim 1, wherein the storage equipment is provided with an induction pipe that is connected with the first or second subsea transmission pipe or to receive high-pressure liquid carbon dioxide, and has an internal space divided into an induction space and a storage space by means of an induction pipe partition, the induction pipe partition having an open portion of the inner ceiling thereof and the storage space consisting in the other space rather than the induction space, for supplying liquid carbon dioxide stored in the storage space to the undersea injection pump via the induction space, and * wherein the storage equipment comprises: a floor valve provided in the induction pipe for controlling the supply rate of *:*::* carbon dioxide; a non-condensable gas discharging unit provided in an upper portion of the storage space for discharging non-condensable gas included in the upper portion of the storage space; and a buoyancy controller configured to use the seawater.3. A storage installation according to claim 2, wherein the buoyancy controller comprises: a seawater discharge pump provided in a lower portion of the storage space for discharging seawater included in the lower portion of the storage space; and a seawater influx pump provided in a lower portion of the storage space for enabling the influx of seawater into the lower portion of the storage space.4. A storage installation according to claim 3, wherein the buoyancy controller further comprises: an introduced seawater processing unit connected with the seawater influx pump for processing the introduced seawater.5. A storage installation according to claim 3, wherein the storage equipment further comprises: a seawater level measuring unit provided in a lower portion of the storage * space for measuring a water level of the seawater included in the storage space. a* S.... * a*:*:: 6. A storage installation according to claim 2, wherein the buoyancy controller is formed so that the storage space has an open bottom and a piston bed is provided in the open bottom. . a * . . * .,7. A storage installation according to claim 2, wherein the buoyancy controller is formed so that the storage space has an open bottom and a modifiable separator is provided in the open bottom.8. A storage installation according to claim 6 or 7, wherein the subsea storage equipment further comprises: a buoyant body attached to one side of the storage equipment.9. A storage installation according to claim 2, further comprising: a liquid carbon dioxide level measuring unit provided in one side of the storage space to measure a level of the liquid carbon dioxide included in the storage space.10. A storage installation according to claim 2, further comprising: a non-condensable gas pressure measuring unit provided in an upper portion of the storage space to measure a pressure of the non-condensable gas included in the storage space.11. A storage installation as hereinbefore described with reference to and as shown in any of Figures 2 to 6 of the accompanying drawings. * * * * * * I.S S. * b * *. S. S * **
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WO2023194765A1 (en) 2022-04-07 2023-10-12 Totalenergies Onetech A system for co2 storage
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CN107524911B (en) * 2017-09-18 2019-04-23 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） The liquid oxygen of underwater operation platform fills and recovery system
WO2022178195A1 (en) * 2021-02-22 2022-08-25 Seaquest Ccs, Llc Systems and methods of carbon dioxide removal with permanent subsea sequestration
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CN103591460A (en) * 2012-08-17 2014-02-19 李宁 Intelligent delivery system for edible oil winterization
GB2549001B (en) * 2016-04-01 2020-12-02 Mirade Consultants Ltd Improved techniques in the upstream oil and gas industry
WO2018234721A1 (en) * 2017-06-21 2018-12-27 Mirade Consultants Ltd Method and apparatus for offshore co2-based eor
CN110959064A (en) * 2017-06-21 2020-04-03 米拉德咨询有限公司 Improved technology for upstream oil and gas industry
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