CN116498890A - Novel CO 2 Offshore transfer and sequestration system - Google Patents

Novel CO 2 Offshore transfer and sequestration system Download PDF

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Publication number
CN116498890A
CN116498890A CN202210055953.2A CN202210055953A CN116498890A CN 116498890 A CN116498890 A CN 116498890A CN 202210055953 A CN202210055953 A CN 202210055953A CN 116498890 A CN116498890 A CN 116498890A
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CN
China
Prior art keywords
sealing
tank
pressure
pipeline
offshore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210055953.2A
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Chinese (zh)
Inventor
郑炜
张义明
彭贵胜
孙强
张林涛
郭强
片成荣
彭东升
潘帅
杜欣
吴楠
马俊
常立勇
吕岩
张梅
杨阳
孙凯强
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Dalian Shipbuilding Industry Co Ltd
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Dalian Shipbuilding Industry Co Ltd
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Filing date
Publication date
Application filed by Dalian Shipbuilding Industry Co Ltd filed Critical Dalian Shipbuilding Industry Co Ltd
Priority to CN202210055953.2A priority Critical patent/CN116498890A/en
Priority to PCT/CN2023/072515 priority patent/WO2023138553A1/en
Publication of CN116498890A publication Critical patent/CN116498890A/en
Pending legal-status Critical Current

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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
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • B63B27/34—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures using pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/06—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products
    • B65B25/10—Forming sector-shaped packages of cheese or like plastic products
    • B65B25/12—Forming sector-shaped packages of cheese or like plastic products and enclosing in circular containers
    • 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
    • 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
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/005—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of 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
    • 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
    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging 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
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/05—Vessel or content identifications, e.g. labels
    • 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
    • F17C2223/03—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
    • 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
    • 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
    • F17C2227/0192—Propulsion of the fluid by using a working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/044—Methods for emptying or filling by purging
    • 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
    • F17C2250/0486—Indicating or measuring characterised by the location
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0118—Offshore
    • F17C2270/0128—Storage in depth

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The invention discloses a CO2 offshore transfer and sequestration system, consisting of CO 2 Transport, CO 2 Loading and unloading CO 2 Transportation, CO 2 Injection of CO 2 Sealing and storing the five parts; having dock loading conditions, CO 2 The onshore storage terminal is transported to the CO through an onshore pipeline 2 Filling device for CO 2 Filling the transport ship, and passing through CO after reaching the destination 2 Dock offloading by transfer system, pipeline to CO 2 Injection module for injecting CO on land or on the sea 2 And sealing the sealing place. Without dock loading conditions, CO 2 The onshore storage terminal is transported to the CO through a pipeline 2 Offshore floating storage device, CO 2 The transport ship moors with the transport ship in a serial or side-by way and finishes CO through hose transmission 2 Is filled with CO 2 After the transport ship reaches the target sea area, the transport ship is transmitted to CO through the inner rotating tower device, the submarine pipeline and the underwater vertical pipe 2 Offshore injection platform for injecting subsea CO through a subsea wellhead 2 And sealing the sealing place. The invention is suitable for CO2 offshore transportation and sealing under any condition.

Description

Novel CO 2 Offshore transfer and sequestration system
Technical Field
The present invention relates to carbon dioxide (CO) 2 ) In the field of capture, transport and sequestration (CCUS), more particularly CO 2 Separated from industrial process, energy utilization or atmosphere, and sealed into land or marine geological formations to realize CO 2 And (5) permanently reducing emission.
Background
Under the aim of carbon neutralization, the intensive development of the CCUS technology is not only the strategic choice for reducing carbon dioxide emission and guaranteeing energy safety in China in the future, but also an important means for constructing ecological civilization and realizing sustainable development. Compared with the development of novel alternative energy sources, the CCUS technology can effectively reduce the emission of greenhouse gases in a short period; developing CCUS technology helps to coordinate resolution of conflicts between the use of fossil energy and policies for reducing carbon emissions; development of CCUS is also a main technical means for maintaining power system flexibility under the goal of carbon neutralization; the development of the CCUS technology also provides a scheme for realizing zero emission for the energy-intensive industry, and is helpful for improving the speaking right of China on the international low-carbon road.
The development of the CCUS technology is highly emphasized in China, and the onshore research, development and application of the technology are steadily promoted. But compared with foreign countries, china has no pollution to ocean CO 2 Later onset of sequestration study, CO 2 Ocean transportation and subsea sequestration are more open. Ocean carbon sequestration has great potential compared with onshore carbon sequestration, and is far away from human habitationThe area, reliability and environmental friendliness are more advantageous. The main carbon emission sources in China are distributed in coastal areas in China, and adjacent sea basins have good carbon sealing conditions; the marine carbon sealing device has the design and manufacturing strength of male thickness in China in the field of marine carbon sealing and marine equipment, and has the favorable basic conditions for developing the marine CCUS. Although the ocean carbon sequestration cost is slightly higher than that of the onshore carbon sequestration, the construction of the ocean bottom sequestration can serve a wider carbon source due to the flexibility of ocean transportation; with the development of domestic carbon tax policies and carbon trade markets, it will also be more economically viable to implement marine CCUS.
Disclosure of Invention
In view of the above problems, it is desirable to invent a novel CO 2 Offshore transfer and sequestration system to achieve CO 2 The high-efficiency transportation of the carbon dioxide is realized, thereby providing conditions for the sealing and storing of CO2, and promoting the development of the carbon trade market and realizing higher economic value.
The invention relates to a novel CO2 offshore transfer and sealing system which mainly comprises five parts, namely CO2 transmission, CO2 loading and unloading, CO2 transportation, CO2 injection and CO2 sealing.
The system has the dock loading condition, the CO2 land storage terminal is conveyed to the CO2 filling device through a land pipeline, the CO2 transport ship is filled, the dock unloading is carried out through the CO2 transfer system after the destination is reached, and the system is conveyed to the CO2 injection module through the pipeline to be injected into the land or the submarine CO2 sealing and storing area.
The method is characterized in that the method does not have wharf loading conditions, a CO2 land storage terminal is conveyed to a CO2 sea floating storage device through a pipeline, a CO2 transport ship moors with the CO2 land storage device in a serial or side-by manner, CO2 filling is completed through hose conveying, after the CO2 transport ship reaches a target sea area, the CO2 transport ship moors and positions with the CO2 sea floating storage device with an inner turret in a serial or side-by manner, CO2 unloading is completed through hose conveying, the CO2 transport ship is conveyed to a CO2 sea injection platform through an inner tower device, a submarine pipeline and an underwater riser, and submarine CO2 sealing and storing is performed through a submarine wellhead.
When the wharf loading condition is not met, the CO2 onshore storage terminal is conveyed to the CO2 onshore floating storage device with the inner turret through a pipeline, and after the CO2 onshore floating storage device with the inner turret reaches a target sea area, the CO2 onshore storage device is conveyed to the CO2 onshore injection platform through the inner turret device, the submarine pipeline and the underwater vertical pipe, and is injected into the submarine CO2 sealing place through the submarine wellhead.
The above land pipeline, submarine pipeline, underwater riser and hose all have heat preservation and pressure resistance. The CO2 phases transported in the pipeline can be gaseous, liquid and supercritical.
When the CO2 in the pipeline is CO2 in a liquid state, the pressure range in the pipeline is as follows: 0.4-7.39 MPa. When CO2 in the pipeline is in a supercritical state, the temperature in the pipeline is higher than 31.3 ℃, and the pressure in the pipeline is higher than 7.39MPa. When the CO2 in the pipeline is gaseous, the pressure in the pipeline ranges: 0-7.39 MPa.
The CO2 transport ship is stored by adopting a C-shaped tank, and when the CO2 storage pressure of the C-shaped tank is 0.4MPa to 2.1MPa.
By adopting the technical scheme of the invention, the following beneficial effects can be obtained, and the method is suitable for CO2 offshore transportation and sealing under any conditions. Novel CO of the invention 2 Offshore transfer and sequestration system to achieve CO 2 The high-efficiency transportation of the carbon dioxide is realized, thereby providing conditions for the sealing and storing of CO2, and promoting the development of the carbon trade market and realizing higher economic value.
In order to achieve the sealing purpose of the invention, the invention provides a liquid CO with low cost, high efficiency 2 Repeatedly usable CO of sealing and storing tank 2 A deep sea ocean sealing method. The method comprises the following states:
s1, liquid CO 2 Is injected into a sealing tank, wherein the sealing tank comprises liquid CO storage 2 The tank body is provided with a heat insulation layer, two sides of the tank body are respectively provided with a discharge device and an injection device of the one-way valve body, and the gravity center of the tank body is deviated to one side of the discharge device; a nitrogen generating device is arranged in the tank body and positioned at one side of the injection device; the discharge means comprises a pressure-controlled bleed means; the sealing and storing tank is also a valve body for controlling pressure;
s2, carrying the sealing and storing tank to an ocean sealing and storing area through a ship;
s3, the sealing and storing tank is put into seawater, the sealing and storing tank is sunk in a vertical state under the action of the gravity center, and one side of the discharging device is positioned at the bottom end;
s4, increasing the pressure in the sealing and storing tank to reach the opening pressure of the relief device, and opening the relief device to realize pressure relief;
s5, when the sealing tank is submerged to the external seawater pressure reaching the opening pressure of the injection device, the injection device is opened, and the seawater flows into the sealing tank;
s6, when the sealing and storing tank is sunk into CO 2 Sealing depth, the injection device and the discharge device are completely opened, and liquid CO 2 The seawater flows out of the sealing and storing tank until the discharging is completed, the external seawater completely enters the sealing and storing tank, and the injection device is closed;
s7, working a nitrogen generating device to generate nitrogen, discharging seawater from the sealing and storing tank, and floating the sealing and storing tank; the discharge means is closed;
s8, the sealing tank floats out of the sea surface and is recycled again.
In a preferred form, the holding tank is biased to the side of the discharge device by a fixed weight.
In a preferred embodiment, the storage tank is fixed with a satellite positioning device for positioning at the time of recovery.
In a preferred mode, the sealing tank is provided with position monitoring equipment for determining the sinking depth of the sealing tank; the injection device and the discharge device are respectively provided with a remote control opening and closing device for monitoring the opening and closing of the sealing can under a determined depth.
Optimally, the allowable maximum pressure of the sealing tank is 30bar, and the CO is obtained in step S6 2 The minimum sealing depth is 1000m.
In summary, the present invention is directed to liquid CO 2 The self-recovery type CO is invented from the problems of sea sealing and storing and the path from the sea surface to the deep sea 2 The transportation sealing tank can be recycled repeatedly, so that the cost problem is solved; the invention discloses a pressure self-discharging CO 2 The transportation and storage tank is controlled by pressure,the operation is safe and reliable, and the problem of manual control is solved; the invention discloses a suspension type CO 2 Transportation sealing tank for suspending and discharging liquid CO in seawater 2 Solves the problems of sediment adsorption and irrecoverable in the sea bottom.
Drawings
FIG. 1 is a CO of the present invention 2 The global layout is stored on land.
FIG. 2 is a CO of the present invention 2 And (5) storing the general layout diagram at the bottom of the sea.
Fig. 3 is a first portion of a system flow diagram of the present invention.
Fig. 4 is a second portion of the system flow diagram of the present invention.
Fig. 5 is a third portion of the system flow diagram of the present invention.
Fig. 6 is a fourth portion of the system flow diagram of the present invention.
FIG. 7 is a liquid CO used in the method of the present invention 2 A schematic structure of the transportation and storage tank.
Fig. 8 is a partial schematic view of the discharge device in the canister of fig. 7.
FIG. 9 is a liquid CO carried by a vessel in the method of the invention 2 A schematic diagram of the state of the transport containment tank.
FIG. 10 is a block-out implementation of CO 2 Is a process schematic of (a).
FIG. 11 is a schematic illustration of the completion of a sequestration tank for liquid CO 2 Schematic of the released state.
Fig. 12 is a schematic diagram of the process of closing the tank return.
Fig. 13 is a schematic view showing a state in which the canister is recovered.
Fig. 14 is a schematic view showing a state in which the recovery of the tank is completed.
The parts in the drawings are respectively marked as follows:
1-CO from industrial activities 2 ，2-CO 2 Capture module, 3-CO 2 Land-based storage terminal, 4-land-based CO 2 Filling arm, 5-land CO 2 Conveying pipeline, 6-submarine CO 2 Conveying pipeline, 7-storage tank type CO 2 Transport vessel, 8-CO with tandem mooring 2 Transport vessel, 9-floating CO equipped with inner turret 2 The storage device comprises a storage device, a storage device and a storage device,10-CO with side by mooring 2 Transport vessel, 11-catenary single point mooring, 12-floating hose, 13-subsea riser, 14-mooring line, 15-mooring anchor chain, 16-soft rigid arm single point mooring, 17-transfer hose, 18-floating CO 2 Storage device, 19-conduit rack type CO 2 Pressurizing transmission platform, 20-CO 2 Pressurizing transmission module, 21-CO 2 Loading and unloading dock, 22-CO 2 Transport system, 23-CO 2 Injection module, 24-land CO 2 And sealing and storing the ground. 25-subsea CO 2 Sealing-up the ground, 26-subsea wellhead, 27-conduit frame CO 2 Filling platform, 28-CO 2 And (5) a filling module.
Detailed Description
FIG. 1 is CO 2 Land-based sequestration general layout, 1-CO from industrial activities 2 By 2-CO 2 The capture module is collected and stored in a liquid state in 3-CO 2 In a land-based storage terminal, when CO 2 When the sealing is needed, CO is needed due to the far distance from the 26-land sealing place 2 And (5) transferring. By 5-terrestrial CO 2 A conveying pipeline for conveying liquid CO 2 Delivery to 4-land CO 2 7-CO with filling arm docking to dock 2 And filling the transport ship. Can also pass through 6-submarine CO 2 Transfer pipeline and 13-underwater riser will 3-CO 2 CO stored by land storage terminal 2 To 11-catenary single point mooring and then to 7-CO via 12-floating hose 2 And filling the transport ship. Can also pass through 6-submarine CO 2 Transfer pipeline and 13-underwater riser will 3-CO 2 CO stored by land storage terminal 2 To a 16-soft rigid arm single point mooring and then to 7-CO via a 17-jumper transfer hose 2 And filling the transport ship.
To increase CO 2 Can be set up in offshore areas with 9-equipped inner turret floating CO 2 Storage device, CO produced by 1-industrial activity 2 By 2-CO 2 After collection by the capture module, the CO is passed through the 6-seafloor in liquid form 2 Floating CO with transfer piping to 9-rig inner turret 2 On storage means, re-transmitted to 8-CO using tandem mooring 2 Transport vessel and 10-CO with side-by-side mooring 2 On transport vessels, in order to increase CO 2 A plurality of 11-catenary single point moorings can be provided, the 11-catenary single point moorings are fixed on the sea bottom through 15-mooring anchor chains, and the 9-equipped inner turret floating CO is carried through 6 submarine pipelines and 13 underwater risers 2 CO stored in storage device 2 To 11-catenary single point mooring, 7-CO 2 The carrier is moored with the 11-catenary single point mooring via a 14-mooring line, and the CO is moored via a 12-floating hose 2 Transferred from 11-catenary single point mooring to 7-CO 2 On the transport vessel. In addition to the modes described above, 1-industrial activity produces CO 2 By 2-CO 2 After collection by the capture module, the CO is passed through the 6-seafloor in liquid form 2 Transfer pipeline to 18-float CO 2 Storage device from which CO is directly carried out 2 Is a transport of (a) to the transport site.
For CO 2 Land-based storage mode, 7-CO 2 When the transport ship sails to the target sea area, if the condition of dock unloading is met, the transport ship is berthed 21-dock by 22-CO 2 The transfer system transfers CO 2 Delivery to 3-CO 2 Onshore storage terminal for CO via 5-onshore pipeline 2 To 23-CO 2 Injection module for injecting 24-terrestrial CO 2 And sealing the storage area.
Full CO 2 9-float CO equipped with inner turret 2 After the storage device reaches the target sea area, if the target sea area does not have wharf unloading conditions, the storage device can be connected with the pre-laid 6-seabed CO through the 13-underwater vertical pipe 2 Pipeline and 5 land pipeline remote CO 2 Delivery to 3-CO 2 Onshore storage terminal for CO via 5-onshore pipeline 2 To 23-CO 2 Injection module for injecting 24-terrestrial CO 2 And sealing the storage area. Also can pass through 19-pipe rack type CO 2 CO by a pressurized transmission platform 2 Long distance transmission, 7-CO 2 Transport vessel and 18-float CO 2 The storage device is moored with the 11-catenary single point mooring device through a 14-mooring line, and the CO is moored through a 12-floating hose 2 To 11-catenary single point mooring, 7-CO 2 Transport vessel and 18-float CO 2 The storage device can also be moored with a 16-soft rigid arm single point mooring device, and CO is connected through a 17-bridging transmission hose 2 To a 16-soft arm single point mooring followed by CO 2 Transfer to 19-conduit rack CO via 6 subsea pipeline and 13 subsea riser 2 Pressurizing transmission platform through 20-CO 2 Pressurizing the pressurized transmission module and then passing through 6-submarine CO 2 Delivery pipeline and 5-land CO 2 Delivery pipeline to 23-CO 2 Injection module for injecting 24-terrestrial CO 2 And sealing the storage area.
For improved offloading efficiency, a plurality of 11-catenary single point moorings, 9-turret equipped floating CO, may also be provided 2 After the storage device finishes transferring, the CO 2 Transfer station, 8-CO with tandem mooring 2 Transport vessel and 10-CO with side-by-side mooring 2 Floating CO for a transport vessel and 9-equipped inner turret 2 To which the storage device transfers CO after mooring connection 2 In addition 7-CO 2 The carrier can also be moored with a connection by a 14-mooring line to an 11-catenary single point mooring, with CO by a 12-floating hose 2 To an 11-catenary single point mooring and then CO is transferred through 6 subsea pipelines and 13 subsea risers 2 Floating CO transferred to 9-equipped inner turret 2 Stored in a storage device, can be connected with 6 seabed CO laid in advance through a 13-underwater vertical pipe 2 Pipeline and 5 land pipeline to CO 2 Delivery to 3-CO 2 Onshore storage terminal for CO via 5-onshore pipeline 2 To 23-CO 2 Injection module for injecting 24-terrestrial CO 2 And sealing the storage area.
There are also many abandoned fields offshore, FIG. 2 is CO 2 Subsea sequestration general layout, figure 1-CO from industrial activities 2 By 2-CO 2 The capture module is collected and stored in a liquid state in 3-CO 2 In a land-based storage terminal, when CO 2 When the sealing is needed, CO is needed due to the far distance from the 26-land sealing place 2 And (5) transferring. By 5-terrestrial CO 2 A conveying pipeline for conveying liquid CO 2 Delivery to 4-land CO 2 The filling arm docks to the wharf7-CO of (2) 2 And filling the transport ship. Can also pass through 6-submarine CO 2 Transfer pipeline and 13-underwater riser will 3-CO 2 CO stored by land storage terminal 2 To 11-catenary single point mooring and then to 7-CO via 12-floating hose 2 And filling the transport ship. Can also pass through 6-submarine CO 2 Transfer pipeline and 13-underwater riser will 3-CO 2 CO stored by land storage terminal 2 To a 16-soft rigid arm single point mooring and then to 7-CO via a 17-jumper transfer hose 2 And filling the transport ship. Berthing 21-dock after arrival at destination by 22-CO 2 The transfer system transfers CO 2 Delivery to 3-CO 2 Land-based storage terminal for storing CO 2 To 23-CO 2 Injection module, through 6-subsea CO 2 Connecting a conveying pipeline with a 26-submarine wellhead to connect CO 2 Injecting 25-subsea CO 2 And sealing and storing the ground.
To increase CO 2 Can be set up in offshore areas with 9-equipped inner turret floating CO 2 Storage device, CO produced by 1-industrial activity 2 By 2-CO 2 After collection by the capture module, the CO is passed through the 6-seafloor in liquid form 2 Floating CO with transfer piping to 9-rig inner turret 2 On storage means, re-transmitted to 8-CO using tandem mooring 2 Transport vessel and 10-CO with side-by-side mooring 2 On transport vessels, in order to increase CO 2 A plurality of 11-catenary single point moorings can be provided, the 11-catenary single point moorings are fixed on the sea bottom through 15-mooring anchor chains, and the 9-equipped inner turret floating CO is carried through 6 submarine pipelines and 13 underwater risers 2 CO stored in storage device 2 To 11-catenary single point mooring, 7-CO 2 The carrier is moored with the 11-catenary single point mooring via a 14-mooring line, and the CO is moored via a 12-floating hose 2 Transferred from 11-catenary single point mooring to 7-CO 2 On the transport vessel. In addition to the modes described above, 1-industrial activity produces CO 2 By 2-CO 2 After collection by the capture module, the CO is passed through the 6-seafloor in liquid form 2 Transfer pipeline to 18-float CO 2 (Storage)Device, from which CO is directly carried out 2 Is a transport of (a) to the transport site.
Full CO 2 9-float CO equipped with inner turret 2 After the storage device reaches the target sea area, the storage device can pass through a 13-underwater vertical pipe and a pre-laid 6-seabed CO 2 The pipeline is CO 2 Delivery to 27-conduit rack CO 2 28-CO on filling platform 2 Filling module for CO via connection of 13-subsea riser with 26-subsea wellhead 2 Injecting 25-subsea CO 2 And sealing and storing the ground.
8-CO with tandem mooring 2 Transport vessel and 10-CO with side-by-side mooring 2 Floating CO for a transport vessel and 9-equipped inner turret 2 To which the storage device transfers CO after mooring connection 2 In addition 7-CO 2 The carrier can also be moored with a connection by a 14-mooring line to an 11-catenary single point mooring, with CO by a 12-floating hose 2 To an 11-catenary single point mooring and then CO is transferred through 6 subsea pipelines and 13 subsea risers 2 Floating CO transferred to 9-equipped inner turret 2 Stored in a storage unit, and then passed through a 13-subsea riser and pre-laid 6-subsea CO 2 The pipeline is CO 2 Delivery to 27-conduit rack CO 2 28-CO on filling platform 2 Filling module for CO via connection of 13-subsea riser with 26-subsea wellhead 2 Injecting 25-subsea CO 2 And sealing and storing the ground.
8-CO with tandem mooring 2 Transport vessel and 10-CO with side-by-side mooring 2 Transport vessel and 18-float CO 2 Storage device mooring connection, 18-floating CO 2 The storage device is moored with the 11-catenary single point mooring device through a 14-mooring line, and the CO is moored through a 12-floating hose 2 To 11-catenary single point mooring, 18-floating CO 2 The storage device can also be moored with a 16-soft rigid arm single point mooring device, and CO is connected through a 17-bridging transmission hose 2 To a 16-soft arm single point mooring followed by CO 2 Transfer to 27-conduit rack CO via 13 subsea risers and 6 subsea pipelines 2 28-CO on filling platform 2 Filling module for CO via connection of 13-subsea riser with 26-subsea wellhead 2 Injecting 25-subsea CO 2 And sealing and storing the ground.
The invention designs a self-recovery type pressure self-unloading type suspended CO as shown in figures 7-9 2 A transportation and storage tank, comprising a liquid CO storage tank 2 The strength of the tank 95 is designed according to the depth of the water to be sealed, and the tank 95 is provided with a set of injection devices 91 which are controlled by pressure, a set of discharge devices 92 which are controlled by pressure, a set of positioning system devices 93, a set of nitrogen generating devices 94 which are controlled by chemical methods and a set of discharge devices 96 which are controlled by pressure. Liquid CO 2 The tank 95 is designed into a capsule shape, and the shape design of the capsule is favorable for constant upper and lower ends, avoiding overturning and being favorable for pressure control in the sinking and floating processes. Because of the symmetrical structure of the tank 95, the center of gravity is centered and most of the device weight is concentrated at one end of the discharge device 92, eventually liquid CO 2 The center of gravity design of the tank as a whole is biased toward one end of the discharge device 92 so that the tank sinks vertically in the longitudinal direction of the tank as it sinks.
Storing liquid CO 2 The tank 95 can bear internal and external pressure of more than 30bar, is optimally designed into a capsule shape, is favorable for constant upper and lower ends in the sinking and floating processes, avoids overturning, and is favorable for pressure control.
In addition, in the injection device 91 using pressure control according to the present invention, when the external pressure of the tank 95 caused by seawater is greater than the internal pressure, the pressure control injection device 91 is automatically opened by the pressure. In the optimal mode, the pressure-controlled injection device 91 is used, the opening size of the injection device 91 is designed, the inflow speed of seawater is controlled, and the pressure difference is kept to be increased along with the sinking depth; in addition, when a large amount of seawater flows into CO 2 Tank, liquid CO 2 The pressure difference between the inside and outside of the tank is zero and the pressure-controlled injection device 91 is automatically closed. In addition, the chinese patent "an industrial bus type ship LNG fuel security control device" (patent No. CN 201721324589.6), relates to a similar device, and the injection device 91 of the present invention may be used after parameters are determined by simple modification and experiments.
In addition, the present invention relates to a pressure-controlled exhaust device 92 for liquid CO 2 When the tank is submerged under 1000m water and the external pressure of the tank body 95 caused by seawater reaches the design pressure, the pressure control discharging device 92 is automatically opened due to the pressure effect. Preferably, when nitrogen is filled in CO 2 The evacuation device 2 is designed with a gas escape device 97 to prevent nitrogen from sinking out of the canister when in the canister. The invention relates to a Chinese patent 'an industrial bus type ship LNG fuel security control device' (patent number CN 201721324589.6), and relates to a similar device, wherein the discharge device 2 can be used after parameters are determined through simple transformation and experiments.
In addition, the pressure-controlled bleed device 96, liquid CO, of the present invention 2 The tank is heated by seawater in the sinking process, and liquid CO 2 The temperature will rise and the internal pressure will increase and the pressure controlled bleed device 96 will automatically open, bleeding the pressure and maintaining the internal pressure at 30bar. To ensure the strength of the can 95, to reduce the opening of the can 5, a pressure-controlled bleed device 96 is arranged on the pressure-controlled discharge device 92. The bleeder device can be selected from similar devices related in the file of Chinese patent CN202021137650.8 'an LPG ship safety release pipeline device', and can be used after parameters are determined through simple modification and experiments.
The chemical method nitrogen generating device 94 according to the invention is used when liquid CO 2 When the tank is submerged under 1000m water and the external pressure of the tank body 95 caused by seawater reaches the design pressure, the pressure control nitrogen generating device 94 is automatically opened due to the pressure effect, and nitrogen is generated by a chemical method. The nitrogen generating device 94 can be a similar device related in the file of Chinese patent CN201910182443.X, a submarine utilizing chemical energy and a surface ship sinking emergency lifesaving device, and can be used after parameters are determined through simple transformation and experiments.
The positioning system device 93 according to the invention, when liquid CO 2 The tank floats out of the sea by buoyancy, and is found using a positioning system 93.
The operation process of the invention is specifically described:
as shown in fig. 10, the put state. Firstly, opening a hatch cover at the bottom of a throwing and recycling ship, and liquid CO 2 The tank is put into the seaIn the middle, the discharge device 92 is downward at one end, and the center of gravity is downward, so that the floating center is at the center, and the liquid CO 2 The tank is in a vertical state due to the liquid CO 2 The tank is heavier than seawater and liquid CO 2 The tank is submerged.
Liquid CO 2 In the sinking process of the tank, the liquid CO is heated by the seawater with the temperature of more than 0 DEG C 2 The temperature will rise and the internal pressure will increase and the pressure controlled bleed device 96 will automatically open, bleeding the pressure and maintaining the internal pressure at 30bar.
When sinking to 300m depth, the external pressure of the tank 95 caused by seawater is 31bar, which is greater than the internal pressure, and the pressure control injection device 91 is automatically opened due to the pressure effect, and seawater flows in.
Liquid CO 2 The tank continues to sink, and a part of seawater enters the tank body 95, so that the pressure difference of the tank body 95 is reduced; due to CO 2 The greater the sinking speed of the tank, the greater the resistance of the seawater, which is equal to CO when a certain speed is reached 2 Tank gravity, CO 2 The tank sinking rate is not increasing. By calculating CO 2 The tank sinking speed is designed to be the opening size of the injection device 91, the inflow speed of the seawater is controlled, the pressure difference is kept within 30bar, and the sinking depth is still increased.
Filled with liquid CO 2 And the seawater tank 95 continue to sink as liquid CO 2 The tank is submerged under water 1000m, and at the same time, by adjusting the opening size of the injection device 91, when the pressure difference is increased to 20-30 bar or more, the pressure-controlled discharge device 92 is opened due to the pressure effect, and a large amount of seawater flows into CO 2 Tank, liquid CO 2 The pressure difference between the inside and outside of the tank is zero and the pressure-controlled injection device 91 is closed, when the liquid CO is as shown in FIG. 11 2 The tank is submerged under water 1000m, and liquid CO 2 Flows out of the pot by gravity and is dissolved in the sea, thus achieving the sealing purpose.
At the same time, the pressure control is used to turn on the nitrogen generator 94, the chemical method is used to generate nitrogen, and the nitrogen is filled in CO due to the small density of the gas 2 Above the tank, water in the tank body 95 is discharged, the tank floats upwards, and the discharging device 2 is provided with a gas escape device 97 for preventing nitrogen from being discharged out of the tank and sinking.
As shown in fig. 12, the tank 95 floats out of the sea by buoyancy.
As shown in fig. 13, a positioning system 93 is applied to find the canister.
As shown in fig. 14, the bottom hatch is opened and the recovery tank is recovered by the application launch recovery vessel for reuse.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.

Claims (8)

1. CO (carbon monoxide) 2 The offshore transfer and storage system is characterized by comprising the following operation modes:
a. when loading with wharf, CO 2 The onshore storage terminal is transported to the CO through an onshore pipeline 2 Filling device for CO 2 Filling the transport ship, and passing through CO after reaching the destination 2 Dock offloading by transfer system, pipeline to CO 2 Injection module for injecting CO on land or on the sea 2 Sealing the sealing place;
when loading without wharf, the mode b or c can be selected:
b、CO 2 the onshore storage terminal is transported to the CO through a pipeline 2 Offshore floating storage device, CO 2 The transport ship moors with the transport ship in a serial or side-by way and finishes CO through hose transmission 2 Is filled with CO 2 After the transport ship reaches the target sea area, the transport ship is connected with the CO with the inner turret in a serial or side-by way 2 Mooring and positioning of offshore floating storage device, and CO transmission through hose 2 Is transferred to the CO by means of an inner turret device, a subsea pipeline and a subsea riser 2 Offshore injection platform for injecting subsea CO through a subsea wellhead 2 Sealing the sealing place;
c、CO 2 the onshore storage terminal is transported by pipeline to the CO with inner turret 2 Marine floating storage device withCO with inner turret 2 After the offshore floating storage device reaches the target sea area, the floating storage device is transmitted to CO through the inner rotating tower device, the submarine pipeline and the underwater vertical pipe 2 Offshore injection platform for injecting subsea CO through a subsea wellhead 2 And sealing the sealing place.
2. The CO of claim 1 2 Offshore transfer and storage system, characterized in that step a or b or c comprises the following operations:
s1, liquid CO 2 Is injected into a sealing tank, wherein the sealing tank comprises liquid CO storage 2 A tank body (95) provided with a heat insulation layer, wherein a discharge device (92) and an injection device (91) of a one-way valve body are respectively arranged at two sides of the tank body (95), and the gravity center of the tank body (95) is deviated to one side of the discharge device (92); a nitrogen generating device (94) is arranged in the tank body (95) and positioned at one side of the injection device (91); the drain (92) includes a pressure controlled bleed (96); the sealing and storing tank is also a valve body for controlling pressure;
s2, carrying the sealing and storing tank to an ocean sealing and storing area through a ship;
s3, the sealing and storing tank is put into seawater, the sealing and storing tank is sunk in a vertical state under the action of gravity, and one side of the discharging device (92) is positioned at the bottom end;
s4, the pressure in the sealing tank is increased to reach the opening pressure of the relief device (96), the relief device (96) is opened, and CO 2 Outflow, realizing pressure relief;
s5, when the sealing tank is submerged to the external seawater pressure to reach the opening pressure of the injection device (91), the injection device (91) is opened, and the seawater flows into the sealing tank;
s6, when the sealing and storing tank is sunk into CO 2 Depth of seal, the injection means (91) and the evacuation means (92) are fully open, liquid CO 2 Outflow of the tank until the discharge is completed, external sea water completely enters the tank, and the injection device (91) is closed;
s7, a nitrogen generating device (94) works to generate nitrogen, the sealing and storing tank discharges seawater, and the sealing and storing tank floats upwards; -said evacuation means (92) are closed;
s8, the sealing tank floats out of the sea surface and is recycled again.
3. Pressure self-discharging CO according to claim 2 2 The sealing method is characterized in that the sealing tank realizes the gravity center deflection to one side of the discharging device (92) through a fixed weight.
4. Pressure self-discharging CO according to claim 2 2 The method for sealing is characterized in that the sealing tank is fixed with a satellite positioning device (93) for positioning during recovery.
5. Pressure self-discharging CO according to claim 2 2 The sealing method is characterized in that a position monitoring device is arranged on the sealing tank and used for determining the sinking depth of the sealing tank; the injection device (1) and the discharge device (92) are respectively provided with a remote control opening and closing device for monitoring the opening and closing of the sealing can under a determined depth.
6. Pressure self-discharging CO according to claim 2 2 A method of sealing, characterized in that the maximum allowable pressure of the sealing tank is 30bar.
7. Pressure self-discharging CO according to claim 2 2 The sealing method is characterized in that the CO in the step S6 2 The minimum sealing depth is 1000m.
8. The CO according to any one of claims 1 to 7 2 Offshore transfer and sequestration system characterized by CO in pipelines 2 Is CO 2 In the liquid state, the pressure range in the pipeline is: 0.4-7.39 MPa; CO in a pipeline 2 In the supercritical state, the temperature in the pipeline>31.3 degrees celsius, pressure in the pipe>7.39MPa; CO in a pipeline 2 In the gaseous state, the pressure in the pipeline ranges: 0-7.39 MPa;
CO 2 c-type tank for transport shipStorage of CO from C-tank 2 The storage pressure is 0.4MPa to 2.1MPa.
CN202210055953.2A 2022-01-18 2022-01-18 Novel CO 2 Offshore transfer and sequestration system Pending CN116498890A (en)

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CN202210055953.2A CN116498890A (en) 2022-01-18 2022-01-18 Novel CO 2 Offshore transfer and sequestration system
PCT/CN2023/072515 WO2023138553A1 (en) 2022-01-18 2023-01-17 Novel co2 maritime transshipment and storage system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210055953.2A CN116498890A (en) 2022-01-18 2022-01-18 Novel CO 2 Offshore transfer and sequestration system

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JP2011031230A (en) * 2009-07-30 2011-02-17 Gunji Haga Liquefied co2 offshore dumping platform
WO2011019096A1 (en) * 2009-08-11 2011-02-17 한국해양연구원 Floating dock type liquid carbon dioxide transport ship and transport method thereof
NO20170525A1 (en) * 2016-04-01 2017-10-02 Mirade Consultants Ltd Improved Techniques in the upstream oil and gas industry
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