CN114954785A - Torpedo anchor based on ocean carbon sequestration and installation method thereof - Google Patents
Torpedo anchor based on ocean carbon sequestration and installation method thereof Download PDFInfo
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- CN114954785A CN114954785A CN202210555007.4A CN202210555007A CN114954785A CN 114954785 A CN114954785 A CN 114954785A CN 202210555007 A CN202210555007 A CN 202210555007A CN 114954785 A CN114954785 A CN 114954785A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
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- B01D53/1456—Removing acid components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
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Abstract
The invention belongs to the technical field of deep sea mooring, and relates to a torpedo anchor based on ocean carbon sequestration and an installation method thereof. The torpedo anchor based on ocean carbon sequestration comprises an anchor tip, a lower anchor rod, an upper anchor pipe, a round hole, anchor wings, anchor plate holes, a working anchor pipe chain, a flexible conduit, anchor pipe sections, anchor pipe holes, an anchor chain connecting ring and a carbon dioxide discharge platform; the invention utilizes carbon dioxide and alkaline solution to mineralize the soil around the fish-thunderbolt to achieve the purposes of carbon dioxide sealing, improving the bearing capacity of the fish-thunderbolt and expanding the applicable soil range. The invention has simple operation, saves the operation cost of punching, pipe burying and the like, and is more suitable for deep sea operation. The working anchor pipe chain can be connected with the fish-thunderbolt and CO 2 A discharge platform, in turn, canTransport of CO 2 And an alkaline solution. CO 2 2 Can form carbon dioxide hydrate with water in soil body to realize CO 2 The hydrate is sealed, and can be mixed with Ca (OH) 2 And Mg (OH) 2 The reaction generates carbonate precipitate to reach CO 2 And (5) mineralizing and sealing.
Description
Technical Field
The invention belongs to the technical field of deep sea mooring, and relates to a torpedo anchor based on ocean carbon sequestration and an installation method thereof.
Background
With the rapid development of the world economy, carbon dioxide (CO) 2 ) The discharge amount is gradually increased, and the living environment of human beings is continuously threatened. IPCC sixth evaluation report climate change 2021: the natural science foundation "states: since 1850-1900 years, the global average surface temperature has increased by about 1 ℃ due to excessive emissions of greenhouse gases. CO 2 2 As a main component of greenhouse gases, excessive discharge of the greenhouse gases can bring serious consequences such as global warming, glacier melting, sea level rising, rainfall reduction and species extinction. Thus, control of atmospheric CO 2 Concentration has become an imminent problem for all humans. China has 1.8-thousand kilometers of coastlines, governs about 300-thousand square kilometers of sea areas, and has abundant energy sources and strong ecological regulation capacity. Thus, the ocean plays a significant role in reducing carbon emissions and carbon sink.
The existing ocean carbon sequestration technology mainly focuses on carbon dioxide hydrate sequestration, and in seawater under high pressure and low temperature, water molecules are repositioned to form a cage shape to capture CO 2 Gas, forming CO 2 A hydrate. Liquid CO 2 The density is higher than that of the seawater, and the carbon lake is deposited to a low-lying area of the seabed under the action of gravity to form a stable carbon lake. The deep sea mineralization sealing operation is difficult, and the cost is high. Therefore, research and development of an ocean carbon mineralization technology which is simple to operate, economical and efficient is urgently needed.
A fish-and-thunder anchor is a deep sea anchoring foundation and is mainly used for anchoring a deep sea floating platform. It has the advantages of simple installation, low cost and the like. At present, torpedo anchors are mainly used for cohesive soil, and are less used for sandy soil or calcareous sand. Because the bearing capacity of the anchor is limited by factors such as installation depth, friction between an anchor body and a soil body interface, fragility of calcareous sand particles and the like, the anchor has lower bearing capacity in sandy soil or calcareous sand. The fish-thunder anchor is connected with the upper floating platform through an anchor chain or a steel cable. The invention of the existing improved torpedo anchor is mainly used for increasing the contact area between the anchor body and the soil body and the installation depth of the anchor body, but has the defect of innovation in the aspect of increasing the bearing capacity by improving the strength of the soil body. Thus, based on CO 2 Mineralized soil body principle, research and development of torpedo anchor considering ocean carbon sequestration and installation method thereof。
Disclosure of Invention
The aim is to solve the problem of ocean carbon sequestration and further improve the bearing capacity of the torpedo anchor. The invention provides a high-bearing-capacity torpedo anchor based on ocean carbon sequestration and an installation method thereof.
The technical scheme of the invention is as follows:
a torpedo anchor based on ocean carbon sequestration comprises an anchor tip, a lower anchor rod, an upper anchor pipe, a round hole, anchor wings, anchor plate holes, a working anchor pipe chain, an anchor pipe section, a flexible conduit, an anchor pipe hole and an anchor chain connecting ring;
the anchor tip, the lower anchor rod and the upper anchor pipe are connected in sequence; the working anchor pipe chain consists of no less than 2 anchor pipe joints and a flexible conduit; and anchor chain connecting rings are arranged at two ends of the anchor pipe sections, and the anchor pipe sections are connected through the anchor chain connecting rings. The flexible conduit is built into the anchor pipe section. Before the fish and thunder anchor is installed, the working anchor pipe chain can be suspended on one side of the anchor or can be lowered to a certain position like a traditional flexible anchor chain, and the installation of the fish and thunder anchor is not influenced.
The upper anchor pipe is a hollow steel pipe, and round holes are distributed in a quincunx shape on the side wall. The lower anchor rod is filled with waste asphalt concrete blocks, waste steel fittings and waste metal to increase the balance weight, so that the gravity center G of the torpedo anchor z Below the centroid O z And vertically falls in water. The length of the upper anchor pipe and the lower anchor pipe is the same according to the gravity center G of the torpedo anchor z Below the centroid O z And (5) designing. The even number of anchor wings are vertically arranged at the tail end of the upper anchor pipe at equal intervals, the arc shape of the lower edge of each anchor wing is designed according to the shape of the head of the swordfish, and the included angle between the gradient of any two points on the arc line and the horizontal direction is more than 45 degrees.
The upper top surface of the upper anchor pipe is provided with an anchor pipe hole, and the anchor plate hole is vertically fixed above the upper top surface and is connected with an anchor chain connecting ring of the anchor pipe section. One end of the flexible conduit is connected with the anchor pipe hole.
The anchor pipe joint is a steel thin pipe, and the wall thickness is 0.01 m-0.02 m. The number of the flexible conduits is 2-4, the flexible conduits are steel wire hoses made of PA, PE or PVC, and the wall thickness is 0.005-0.015 m.
The thickness of the anchor wing is 0.1-0.2 m, and the length L of the anchor wing f 1/3 of the upper anchor tube, length L f Units of formula 1: m:
L f ＝8.345w 3 -9.248w 2 +4.831w+0.004 (1)
wherein w is the width dimension of the anchor wing, L f Is the anchor wing length dimension.
The upper anchor pipe is a hollow steel pipe, the wall thickness of the pipe is 0.015-0.030 m, the diameter of the pipe is 0.7-1.5 m, round holes are distributed in a quincunx shape on the side wall, and the distance between the round holes is larger than 1.5 times of the hole diameter.
The lower anchor rod is filled with waste concrete blocks and waste steel and iron to increase the balance weight, so that the gravity center G of the torpedo anchor z Below the centroid O z Vertically in water, units are calculated according to the following equations 2 and 3: and m is selected.
In the formula, L f Is the length dimension of anchor wing, L up Is the length dimension of the upper anchor pipe, L un Is the length dimension of the upper anchor pipe, L tip Is the length dimension of the upper anchor pipe, V fin Is the volume size of the anchor wing, V up Is the volume size of the upper anchor pipe, V un Is the volume size of the lower anchor pipe, V tip Volume size of anchor point, p fill Density of filling, p wall Is the density of the steel.
CO 2 The gas is input into the upper anchor pipe through the flexible guide pipe and is diffused into the soil body through the side wall round hole under the pressure action. CO 2 2 Can form carbon dioxide hydrate with water in soil.
After CO is introduced 2 The gas may be reacted with CaOH 2 And MgOH 2 The reaction generates carbonate precipitate, thereby realizing CO 2 And (7) sealing and storing. The generated carbonate increases the soil strength by filling the soil pores and cemented soil particles, and improves the torpedo anchor bearing capacityForce.
A method for installing a torpedo anchor based on ocean carbon sequestration comprises the following steps:
the first step is as follows: and (4) assembling the upper anchor pipe and the lower anchor rod which are separately transported on the installation ship to complete the assembly of the anchor body. And connecting and installing an anchor chain and a working anchor pipe chain.
The second step is that: and (4) lowering the anchor body and the working anchor pipe chain to a preset falling height. And releasing and installing the anchor chain, and penetrating the anchor body into the soil body by a preset depth only depending on the self gravity.
The third step: after the anchor body is penetrated into the seabed, the working anchor pipe chain and CO are connected 2 The discharge platform is connected with a flexible conduit and CO 2 The exhaust or drain pipes of the drainage platform are butted.
The fourth step: firstly, CO with a certain pressure is added 2 And conveying the gas into the upper anchor pipe through 1-2 flexible guide pipes in the working anchor pipe chain. Then under pressure, CO 2 And the carbon dioxide is diffused into the soil around the anchor body through the circular holes on the side wall and forms carbon dioxide hydrate with water in the soil for sealing.
The fifth step: if only carbon sequestration is carried out, 1-4 flexible conduits in the working anchor pipe chain can be used for conveying CO 2 . The torpedo anchor can anchor CO 2 Platform for discharging, and transporting CO 2 And the carbon sealing storage is carried out, so that the cost is saved.
And a sixth step: CO 2 2 After the gas transportation is finished, the alkaline solution is pumped into the upper anchor pipe through the other 1-2 flexible guide pipes, and the alkaline solution continuously enters the soil body through the side wall circular hole under the action of pressure. CO 2 2 With CaOH 2 And MgOH 2 The reaction produces carbonate precipitate.
The seventh step: when upper CO is present 2 When the discharge platform needs to move and reuse the fish-stone anchor, excessive CO can be introduced 2 Gas, CO 2 The gas reacts with water and carbonate to generate bicarbonate dissolved in the water, so that the strength of the soil body and the interface friction are reduced, and the anchor body is easy to pull out.
The invention has the advantages that:
the anchor pipe chain adopts flexible connection, is embedded with an exhaust pipe and can be installed together with the anchor bodyIn the seabed, the traditional torpedo anchor only has an anchoring function, and the invention can realize anchoring and carbon sequestration. The invention has simple operation, saves the operation cost of punching, pipe burying and the like, and is more suitable for deep sea operation. The working anchor pipe chain can be connected with the fish-thunderbolt and CO 2 Platform for discharging, and transporting CO 2 And an alkaline solution. CO 2 2 Can form carbon dioxide hydrate with water in soil body to realize CO 2 The hydrate is sealed off, and can also be mixed with Ca (OH) 2 And Mg (OH) 2 The reaction generates carbonate precipitate to reach CO 2 And (5) mineralizing and sealing. The torpedo anchor can anchor CO 2 Platform for discharging, and transporting CO 2 Gas, CO reduction 2 Cost of sequestration. The generated carbonate fills the pores of the soil body and consolidates the soil body particles, so that the soil body strength is increased; and increase the interface friction between anchor body and the soil body, and then improve the bearing capacity of torpedo anchor. CO in sandy soil or calcareous sand 2 The effect of mineralizing the soil body is obvious, so that the soil body application range of the torpedo anchor is expanded.
Drawings
FIG. 1 is an elevation view of a marine carbon sequestration Rayleigh anchor of the present invention;
FIG. 2 is a cross-sectional view of a marine carbon sequestration Rayleigh anchor of the present invention;
FIG. 3 is a schematic structural view of the marine carbon sequestration FISH-LEVER of the present invention;
FIG. 4 is a top view of the marine carbon sequestration Rayleigh anchor of the present invention;
FIG. 5 is a schematic diagram of the anchor chain of the present invention;
FIG. 6 is a side sectional view of the anchor tube chain of the present invention;
FIG. 7 is a top view of the anchor tube chain of the present invention;
FIG. 8 is a schematic view of the operation of the marine carbon sequestration fish and lightning anchor of the present invention.
In the figure: 1-anchor tip; 2-lower anchor rod; 3-an upper anchor pipe; 4-a circular hole; 5-anchor wing; 6-anchor plate eye; 7-a working anchor pipe chain; 8-anchor pipe joint; 9-a flexible conduit; 10-anchor tube holes; 11-anchor chain connecting rings; 12-CO 2 And (4) a discharge platform.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and technical solutions:
the utility model provides a fish and thunder anchor based on ocean carbon sequestration, by anchor point 1, lower part stock 2, upper portion anchor pipe 3, exhaust hole 4, anchor wing 5, anchor plate eye 6 constitute: the lower anchor rod 2 is assembled with the upper anchor pipe 3, and the lower anchor rod 2 is filled with construction waste for increasing the balance weight; the upper anchor pipe 3 is connected with 4 arc anchor wings 5 with the interval of 90 degrees, and a plurality of exhaust holes 4 are distributed on the side wall in a quincunx shape, as shown in figures 1-4. The working anchor pipe chain 7 is composed of a plurality of anchor pipe sections 8 and 1-4 built-in flexible guide pipes 9, and is shown in figures 5-7.
The first embodiment is as follows:
the invention relates to a method for installing a torpedo anchor based on ocean carbon sequestration, which comprises the following steps of firstly optimizing the design of a lower anchor rod 2, an upper anchor pipe 3 and anchor wings 5 based on a bionics principle and a principle that the center of gravity is lower than the centroid, wherein the width of the anchor wings 5 is as shown in formula (1) (unit: m):
L f ＝8.345w 3 -9.248w 2 +4.831w+0.004
wherein w is the width dimension of the anchor wing, L f Is the anchor wing length dimension.
Center of gravity G z And centroid O z The following equations (2) and (3) (unit: m) were calculated:
in the formula, L f Is the length dimension of anchor wing, L up Is the length dimension of the upper anchor pipe, L un Is the length dimension of the lower anchor pipe, L tip Is the length dimension of the upper anchor pipe, V fin Is the volume size of the anchor wing, V up Is the volume size of the upper anchor pipe, V un Is the volume size of the lower anchor pipe, V tip Volume size of anchor point, p fill Density of filling, p wall Is the density of the steel.
(2) And assembling the lower anchor rod 2 and the upper anchor pipe 3, connecting the lower anchor rod and the upper anchor pipe with a working anchor pipe chain 7, and arranging 2 flexible guide pipes 9 inside the working anchor pipe chain 7.
(3) The torpedo anchor is lowered 50m above the seabed and the working anchor pipe chain 7 is suspended to one side of the anchor. Releasing and installing the anchor chain, and dragging the working anchor pipe chain 7 to penetrate to the designed depth of the seabed by the torpedo anchor in the free falling process.
(4) After the anchor body is penetrated into the seabed, the working anchor pipe chain 7 and CO 2 The discharge platform 12 is connected and butts against the flexible conduit 9.
(5) CO with a certain pressure 2 Gas is delivered to the upper anchor pipe 3 through 1 flexible conduit 9 in the anchor pipe chain 7, and then CO 2 The gas is diffused into the soil around the anchor body through the side wall exhaust holes 4 under the pressure action, and CO is generated 2 And forming carbon dioxide hydrate with water in the soil body for sealing.
(6) CO is transported completely 2 Gas, then Ca (OH) is introduced through another 1 flexible conduit 9 2 And Mg (OH) 2 The alkaline solution is hydraulically sent to the upper anchor pipe 3, and the alkaline solution continuously enters the soil body through the side wall exhaust hole 4 under the action of pressure. CO 2 2 And Ca (OH) 2 And Mg (OH) 2 The reaction produces carbonate precipitate. The carbonate fills the soil pores and the cemented soil particles, so that the soil strength is increased; meanwhile, the interface friction between the anchor body and the soil body is increased, and the bearing capacity of the fish-thunder anchor is further improved.
(7) In moving CO 2 Before the discharge platform 12, excess CO can be introduced via 2 flexible conduits 9 2 A gas. In the environment of water, CO 2 And the water-soluble bicarbonate is generated by the reaction with carbonate, so that the strength of the soil body and the interface friction are reduced, and the anchor body is easy to pull out.
Example two:
the invention relates to a method for installing a torpedo anchor based on ocean carbon sequestration, which comprises the following steps of firstly optimizing the design of a lower anchor rod 2, an upper anchor pipe 3 and anchor wings 5 based on a bionics principle and a principle that the center of gravity is lower than the centroid, wherein the width of the anchor wings 3 is as shown in formula (1) (unit: m):
L f ＝8.345w 3 -9.248w 2 +4.831w+0.004
in the formula (I), the compound is shown in the specification,w is the width dimension of the anchor wing, L f Is the anchor wing length dimension.
Center of gravity G z And centroid O z The following equations (2) and (3) (unit: m) were calculated:
in the formula, L f Is the length dimension of anchor wing, L up Is the length dimension of the upper anchor pipe, L un Is the length dimension of the lower anchor pipe, L tip Is the length dimension of the upper anchor pipe, V fin Is the volume size of the anchor wing, V up Is the volume size of the upper anchor pipe, V un Is the volume size of the lower anchor pipe, V tip Volume size of anchor point, p fill Density of filling, p wall Is the density of the steel.
(2) And assembling the lower anchor rod 2 and the upper anchor pipe 3, connecting the lower anchor rod and the upper anchor pipe with a working anchor pipe chain 7, and arranging 2 flexible guide pipes 9 inside the working anchor pipe chain 7.
(3) The torpedo anchor is lowered 80m above the seabed and the working anchor pipe chain 7 is suspended to one side of the anchor. Releasing and installing the anchor chain, and dragging the working anchor pipe chain 7 to penetrate to the designed depth of the seabed by the torpedo anchor in the free falling process.
(4) After the anchor body is penetrated into the seabed, the working anchor pipe chain 7 and CO 2 The discharge platform 12 is connected and butts against the flexible conduit 9.
(5) CO with a certain pressure 2 The gas is transported to the upper anchor pipe 3 through 2 flexible conduits 9 in the anchor pipe chain 7, and then the CO is transported 2 The gas is diffused into the soil around the anchor body through the side wall exhaust holes 4 under the pressure action, and CO is generated 2 And forming carbon dioxide hydrate with water in the soil body for sealing.
(6) In moving CO 2 When the platform 12 is discharged, the anchor body can be directly pulled out.
Example three:
the invention relates to an installation method of a torpedo anchor based on ocean carbon sequestration, which comprises the following steps of optimizing the design of a lower anchor rod 2, an upper anchor pipe 3 and anchor wings 5 based on a bionics principle and a principle that the center of gravity is lower than the centroid, wherein the width of the anchor wings 3 is as shown in formula (1) (unit: m):
L f ＝8.345w 3 -9.248w 2 +4.831w+0.004
wherein w is the width of the anchor wing, L f Is the anchor wing length dimension.
Center of gravity G z And centroid O z The following equations (2) and (3) (unit: m) were calculated:
in the formula, L f Is the length dimension of anchor wing, L up Is the length dimension of the upper anchor pipe, L un Is the length dimension of the lower anchor pipe, L tip Is the length dimension of the upper anchor pipe, V fin Is the volume size of the anchor wing, V up Is the volume size of the upper anchor pipe, V un Is the volume size of the lower anchor pipe, V tip Volume size of anchor point, p fill Density of filling, p wall Is the density of the steel.
(2) And (3) assembling the lower anchor rod 2 and the upper anchor pipe 3, and then connecting the lower anchor rod and the upper anchor pipe with a working anchor pipe chain 7, wherein 4 flexible guide pipes 9 are arranged inside the working anchor pipe chain 7.
(3) The torpedo anchor is lowered 80m above the seabed and the working anchor pipe chain 7 is suspended to one side of the anchor. Releasing and installing the anchor chain, and dragging the working anchor pipe chain 7 to penetrate to the designed depth of the seabed by the torpedo anchor in the free falling process.
(4) After the anchor body is penetrated into the seabed, the working anchor pipe chain 7 and CO 2 The discharge platform 12 is connected and butts against the flexible conduit 9.
(5) CO with a certain pressure 2 The gas is delivered to the upper anchor pipe 3 through 2 flexible conduits 9 in the anchor pipe chain 7In then CO 2 The gas is diffused into the soil around the anchor body through the side wall exhaust holes 4 under the pressure action, and CO is generated 2 And forming carbon dioxide hydrate with water in the soil body for sealing.
(6) CO is transported out 2 Gas, then Ca (OH) is introduced through another 2 flexible conduits 9 2 And Mg (OH) 2 The alkaline solution is hydraulically sent to the upper anchor pipe 3, and the alkaline solution continuously enters the soil body through the side wall vent holes 4 under the action of pressure. CO 2 2 And Ca (OH) 2 And Mg (OH) 2 The reaction produces carbonate precipitate. The carbonate fills the soil pores and the cemented soil particles, so that the soil strength is increased; meanwhile, the interface friction between the anchor body and the soil body is increased, and the bearing capacity of the fish-thunder anchor is further improved.
(7) In moving CO 2 When discharging the platform 12 and reusing the Raynaud anchor, the excess CO can be introduced through the 4 flexible conduits 9 2 A gas. In the environment of water, CO 2 And the water-soluble bicarbonate is generated by the reaction with carbonate, so that the strength of the soil body and the interface friction are reduced, and the anchor body is easy to pull out.
Claims (9)
1. A fish-thunder anchor based on ocean carbon sequestration is characterized by comprising an anchor tip (1), a lower anchor rod (2), an upper anchor pipe (3), a round hole (4), anchor wings (5), anchor plate holes (6), a working anchor pipe chain (7), an anchor pipe joint (8), a flexible guide pipe (9), an anchor pipe hole (10) and an anchor chain connecting ring (11);
the anchor point (1), the lower anchor rod (2) and the upper anchor pipe (3) are connected in sequence; the working anchor pipe chain (7) consists of no less than 2 anchor pipe joints (8) and a flexible conduit (9); two ends of the anchor pipe joint (8) are provided with anchor chain connecting rings (11), and the anchor pipe joints (8) are connected through the anchor chain connecting rings (11); the flexible conduit (9) is arranged in the anchor pipe joint (8); before the fish and thunder anchor is installed, the working anchor pipe chain (7) can be suspended on one side of the anchor or lowered to a certain position like a traditional flexible anchor chain, and the installation of the fish and thunder anchor is not influenced;
the upper anchor pipe (3) is a hollow steel pipe, and round holes (4) are distributed on the side wall in a quincunx shape; the even number of anchor wings (5) are vertically arranged at the tail end of the upper anchor pipe (3) at equal intervals;
the upper top surface of the upper anchor pipe (3) is provided with an anchor pipe hole (10), and an anchor plate hole (6) is vertically fixed on the upper top surface and is connected with an anchor chain connecting ring (11) of the anchor pipe joint (8); one end of the flexible conduit (9) is connected with the anchor pipe hole (10);
the length L of the anchor wing (5) f 1/3 of the upper anchor tube (3), length L f Satisfies formula (1), unit: m:
L f ＝8.345w 3 -9.248w 2 +4.831w+0.004 (1)
wherein w is the width dimension of the anchor wing, L f Is the anchor wing length dimension;
the lower anchor rod (2) is filled with waste concrete blocks and waste steel and iron to increase the balance weight, so that the gravity center G of the torpedo anchor z Below the centroid O z Vertical drop in water, calculated according to equations (2) and (3), in units: m;
in the formula, L f Is the length dimension of anchor wing, L up Is the length dimension of the upper anchor pipe, L un Is the length dimension of the upper anchor pipe, L tip Is the length dimension of the upper anchor pipe, V fin Is the volume size of the anchor wing, V up Is the volume size of the upper anchor pipe, V un Is the volume size of the lower anchor pipe, V tip Volume size of anchor point, p fill Density of filling, p wall Is the density of the steel.
2. The marine carbon sequestration based torpedo anchor as claimed in claim 1, wherein the arc of the lower edge of the anchor wing (5) is designed according to the shape of the head of a swordfish, and the included angle between the gradient of any two points on the arc and the horizontal direction is greater than 45 °.
3. The marine carbon sequestration based torpedo anchor according to claim 1 or 2, wherein the upper anchor tube (3) is a hollow steel tube with a wall thickness of 0.015m to 0.030m and a diameter of 0.7m to 1.5m, and the spacing between the circular holes (4) is greater than 1.5 times the diameter of the hole.
4. A fish-thunderbolt based on marine carbon sequestration according to claim 1 or 2, wherein the anchor tube joint (8) is a thin steel tube with a wall thickness of 0.01m to 0.02 m.
5. The marine carbon sequestration based torpedo anchor according to claim 1 or 2, wherein said flexible conduit (9) is a PA, PE or PVC steel hose with a wall thickness of 0.005m to 0.015m, with 2 to 4.
6. The marine carbon sequestration based torpedo anchor according to claim 3, wherein said flexible conduit (9) is a PA, PE or PVC steel wire hose with a wall thickness of 0.005m to 0.015m, and has 2 to 4 flexible conduits; .
7. The marine carbon sequestration based torpedo anchor according to claim 4, wherein said flexible conduit (9) is a PA, PE or PVC steel hose with a wall thickness of 0.005m to 0.015m, and comprises 2 to 4 wires.
8. The marine carbon sequestration based torpedo anchor according to claim 1 or 2 or 6 or 7, wherein said anchor wings (5) have a thickness of 0.1-0.2 m.
9. The method for installing the marine carbon sequestration based torpedo anchor according to any one of claims 1 to 8, characterized by comprising the following steps:
the first step is as follows: on the installation ship, assembling the upper anchor pipe (3) and the lower anchor rod (2) which are separately transported to complete the assembly of the anchor body; connecting and installing an anchor chain and a working anchor pipe chain (7);
the second step is that: lowering the anchor body and the working anchor pipe chain (7) to a preset falling height; releasing and installing the anchor chain, and penetrating the anchor body into the soil body to a preset depth only by means of self gravity;
the third step: after the anchor body is penetrated into the seabed, the working anchor pipe chain (7) and CO are connected 2 The discharge platform (12) is connected with the flexible conduit (9) and the CO 2 The exhaust or drain pipe of the drainage platform (12) is butted;
the fourth step: first, CO is introduced 2 The gas is sent to the upper anchor pipe (3) through 1-2 flexible guide pipes (9) in the working anchor pipe chain (7); then under pressure, CO 2 The water is diffused into the soil around the anchor body through the side wall circular holes (4) to form carbon dioxide hydrate with water in the soil for sealing;
the fifth step: if only carbon sequestration is carried out, 1-4 flexible conduits (9) in the working anchor pipe chain (7) can be used for conveying CO 2 (ii) a Anchoring CO by fish and thunder anchor 2 A discharge platform (12) capable of transporting CO 2 The carbon sealing storage is carried out, so that the cost is saved;
and a sixth step: CO 2 2 After the gas transportation is finished, the alkaline solution is hydraulically conveyed into the upper anchor pipe (3) through 1-2 other flexible guide pipes (9), and the alkaline solution continuously enters the soil body through the side wall circular hole (4) under the action of pressure; CO 2 2 With CaOH 2 And MgOH 2 Reacting to generate carbonate precipitate;
the seventh step: when upper CO is present 2 When the discharge platform (12) needs to be moved and the fish-thunderbolt is reused, excessive CO can be introduced 2 Gas, CO 2 The gas reacts with water and carbonate to generate bicarbonate dissolved in the water, so that the strength of the soil body and the interface friction are reduced, and the anchor body is easy to pull out.
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| WO2024137823A1 (en) * | 2022-12-20 | 2024-06-27 | Graymont Western Canada Inc. | Systems and methods for storing and mineralizing carbon dioxide with lime |
| US12091361B2 (en) | 2021-12-23 | 2024-09-17 | Graymont Western Canada Inc. | Lime-based cement extender compositions, and associated systems and methods |
| US12122722B2 (en) | 2023-12-20 | 2024-10-22 | Graymont Western Canada Inc. | Systems and methods for storing and mineralizing carbon dioxide with lime |
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