CN216969927U - CO2 transport ship single-point mooring injection system - Google Patents

CO2 transport ship single-point mooring injection system Download PDF

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Publication number
CN216969927U
CN216969927U CN202220091776.9U CN202220091776U CN216969927U CN 216969927 U CN216969927 U CN 216969927U CN 202220091776 U CN202220091776 U CN 202220091776U CN 216969927 U CN216969927 U CN 216969927U
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liquid phase
injection
pipeline
seabed
mooring
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Inventor
郝佳姝
王景洋
潘友鹏
李文贺
李薇
张倩
高阳
张祺
丛海东
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Dalian Shipbuilding Industry Co Ltd
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Dalian Shipbuilding Industry Co Ltd
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Abstract

The invention discloses CO2Transport shipSingle point mooring injection system comprising liquid CO2Marine transport system, subsea fixture and subsea injection device, liquid CO2The CO is firstly transmitted to the seabed fixing device by a CO2 transport ship and then transmitted to the seabed injection device by the seabed fixing device, and the CO is transported to the seabed injection device by the CO2 transport ship2The transport ship is fixed on the sea surface by mooring cables, and the engineering ship fixes CO on the sea surface2The injection pipe and mooring cable are towed from the sea bottom to the sea surface and connected to CO2The transport ship is used for mooring positioning and injection preparation work. CO of the invention2The carrier vessel is self-independently moored and is made of CO2Transport ship for directly transmitting liquid CO2The ship bottom sealing system can be used for simultaneously carrying out transmission operation on a plurality of ships, when the environmental conditions are severe or the directivity is not obvious, the single-point mooring system is used for fixing the ship, when the sea condition is better, a plurality of mooring cables can be used for fixing the ship, the transmission time is saved, and intermediate links and complex construction are saved.

Description

CO (carbon monoxide)2Single-point mooring injection system of transport ship
Technical Field
The invention relates to CO2Mooring area for transport ships and liquid CO2The field of pipeline transmission, more specifically relates to CO2The carrier single point mooring injection system.
Background
Liquid CO2Is an industrial raw material, has severe transportation and storage modes, and adopts the prior art that CO is introduced2After arriving at a target sea area, a transport ship is moored on a single-point buoy for CO2Is transmitted and then is made up ofSingle point buoy transfer to CO2In a floating storage unit, again from CO2Transfer of floating storage to CO2And sealing and storing the system terminal. The transportation process is complicated and the cost is high. But if directly introducing CO2The transport ship is connected with the seabed sealing system, the pressure and temperature of long-distance transportation are difficult to ensure, and the liquid CO can not be smoothly transported2Direct delivery to subsea sequestration systems, a system is needed to address the need for CO2From CO2Transporting ship to offshore CO2Storage means, by offshore CO2The transmission path from the storage device to the seabed sealing system is complex.
Disclosure of Invention
The present invention is directed to liquid CO2The problem of complex transmission path is to provide a single-point mooring injection system for CO2 transport ships.
In order to achieve the aim, the invention provides a single-point mooring injection system of a CO2 transport ship, which comprises liquid CO2Marine transportation system, seabed fixing device and seabed sequestration device.
Liquid CO2The marine transport system comprises CO2Transport ship, CO2A first mooring rope is arranged on the transport ship, the other end of the first mooring rope is fixed on the seabed fixing device, and CO2The transport ship is filled with CO2Storage of C-tank, CO2The top of the C-shaped storage tank is provided with a liquid phase pipeline, and one end of the liquid phase pipeline is inserted with CO2Inside the C-shaped storage tank, a liquid cargo pump is arranged at the inlet end of the liquid phase pipeline, a first branch pipeline and a second branch pipeline are arranged at the other end of the liquid phase pipeline, and the first branch pipeline is directly connected with CO2The injection pipe is connected, two liquid phase valves are sequentially arranged on the first branch pipeline, a first temperature sensor and a first pressure sensor are respectively arranged at the inlet end of the liquid phase valve, the second branch pipeline of the liquid phase pipeline is connected with the inlet end of the heat exchanger, a liquid phase valve is arranged at the inlet end of the heat exchanger, the outlet end of the heat exchanger is connected between the two liquid phase valves on the first branch pipeline, a branch pipeline is arranged between the two liquid phase valves, the branch pipeline is connected with the inlet end of the first booster pump, the outlet end of the first booster pump is connected with the first CO2The injection pipe is connected withOn a branch pipe, first CO2The injection pipe is connected with the seabed fixing device.
The seabed fixing device comprises an anchor pile fixed on the seabed, a pipeline bending limiting pipe and a second booster pump, two fixing bolts are arranged at the top of the anchor pile, one fixing bolt is fixedly connected with the other end of the first mooring rope, the other fixing bolt is fixedly connected with the second mooring rope, the pipeline bending limiting pipe and the CO are fixed2The injection pipe is connected with one end of the seabed, the other end of the pipe bending limiting pipe is connected with a liquid phase pipeline, the liquid phase pipeline is connected with the inlet end of the second booster pump, a liquid phase valve is arranged on the liquid phase pipeline between the pipe bending limiting pipe and the second booster pump, and the outlet end of the second booster pump is connected with the second CO through the liquid phase pipeline2The outlet end of the second booster pump is connected with the second CO2A liquid phase valve and a second CO are arranged on the liquid phase pipeline between the injection pipes2The injection pipe is connected with the seabed sealing device.
The seabed sealing device comprises a seabed injection device, the seabed injection device is provided with a fixed bolt, a sealing wellhead and CO2The injection valve, the fixed bolt and the other end of the second mooring cable are fixedly connected, and the sealed well mouth is provided with liquid CO2Input port, CO2Inlet end of injection valve and second CO2Injection pipe connected to CO2The outlet end of the injection valve is connected with a liquid phase pipeline, CO2The outlet end of the injection valve is provided with a second pressure sensor, a liquid phase pipeline is connected with the inlet end of a third booster pump, the outlet end of the third booster pump is connected with the liquid phase pipeline, and the other end of the liquid phase pipeline is arranged in liquid CO at the sealed well head2In the input port, a leakage detection device is arranged in front of the wellhead for sealing and storing the wellhead, and liquid CO for sealing and storing the wellhead2And an injection rate monitoring device is arranged on the liquid phase pipeline in the input port.
CO mentioned above2The carrier vessel single point mooring injection system is preferably a first CO2The length of the injection pipe is greater than the length of the first mooring line, the second CO2The length of the injection pipe is greater than the length of the second mooring line.
CO as described above2Single point mooring injection system for transport ship, preferablyFirst CO2An injection pipe, a first mooring line, a second CO2The injection pipe, the second mooring cable and the liquid phase pipeline are all made of corrosion-resistant materials.
CO mentioned above2The single-point mooring injection system of the transport ship is preferably characterized in that the pipeline bending limiting pipe is a high-hardness corrosion-resistant steel pipe.
CO as described above2The single-point mooring injection system of the transport ship is preferably characterized in that a liquid phase valve and CO are connected2The injection valves are all electrically controlled electromagnetic valves.
CO as described above2The single-point mooring injection system of the transport ship is used for sealing and storing liquid CO at the wellhead in the preferred mode2And a one-way sealing valve is arranged at the well mouth at the joint of the input port and the liquid phase pipeline and is used for sealing from the seabed to the inside of the seabed in a one-way manner.
CO as described above2The single-point mooring injection system of the transport ship can be preferably connected with a plurality of seabed fixing devices through the seabed sealing device.
CO of the invention2The carrier vessel is self-independently moored and is made of CO2Direct transport of liquid CO by transport vessels2The ship bottom sealing and storing system can carry out transmission operation on a plurality of ships simultaneously, and when the environmental conditions are severe or the directivity is not obvious, a single-point mooring system is adopted to fix the ships and is connected with a CO2Injection pipe for CO2Transporting operation, at this time CO2The transport ship can rotate to the minimum stress position around the mooring point, and the ship is prevented from being damaged by stress. When sea conditions are good, multiple mooring lines can be used to secure the vessel and perform multiple CO operations2Storage tanks transporting jobs simultaneously, i.e. each CO2The cabin is connected with a CO2Injection into the tube while carrying out liquid CO2The transmission operation saves the transmission time, intermediate links and complex construction.
Drawings
Fig. 1 is a diagram of the overall structural arrangement of the present invention.
Fig. 2 is a schematic view of the subsea fixture of the present invention.
Fig. 3 is a schematic view of the subsea containment device of the present invention.
FIG. 4 is a block diagram of the present invention with multiple subsea fixtures connected to the same subsea pipeline containment system;
fig. 5 is a partially enlarged view of a portion a of fig. 1.
In the figure: 1. liquid CO2Maritime transport system, 101, CO2Transport ship, 102, CO2A C-type storage tank 103, a liquid cargo pump 104, a first temperature sensor 105, a first pressure sensor 106, a heat exchanger 107, a first booster pump 108, and first CO2Injection pipe, 109, first mooring line, 201, subsea fixture, 202, anchor pile, 203, pipe bend defining pipe, 204, second booster pump, 205, second CO2Injection pipe, 206, second mooring line, 3, subsea containment device, 301, subsea injection device, 302, second pressure sensor, 303, third booster pump, 304, leak detection device, 305, injection rate monitoring device, 306, containment wellhead.
Detailed Description
As shown in FIG. 1, the present invention is a CO2A single point mooring injection system for a transport vessel comprising liquid CO2A marine transport system 1, a subsea fixture 201, and a subsea injection device 301.
Liquid CO2The marine transport system 1 comprises CO2Transport vessel 101, CO2The transport vessel 101 is provided with a first mooring line 109, the other end of the first mooring line 109 is fixed to the sea floor fixture 201, CO2The transport vessel 101 is filled with CO2 Storage C tank 102, CO2The top of the C-type storage tank 102 is provided with a liquid phase pipeline, and one end of the liquid phase pipeline is inserted with CO2Inside the storage C-tank 102, a liquid cargo pump 103 is installed at the inlet end of the liquid phase pipeline.
As shown in FIG. 5, the other end of the liquid phase pipeline is provided with a first branch pipeline and a second branch pipeline, and the first branch pipeline is directly connected with CO2The injection pipe 108 is connected, two liquid phase valves are sequentially arranged on the first branch pipeline, a first temperature sensor 104 and a first pressure sensor 105 are respectively arranged at the inlet end of each liquid phase valve, the second branch pipeline of the liquid phase pipeline is connected with the inlet end of the heat exchanger 106, one liquid phase valve is arranged at the inlet end of the heat exchanger 106, and the outlet end of the heat exchanger 106 is connected with the second branch pipelineA branch pipeline is arranged between two liquid phase valves on the branch pipeline, a branch pipeline is arranged between the two liquid phase valves, the branch pipeline is connected with the inlet end of the first booster pump 107, the outlet end of the first booster pump 107 is connected with the first CO2First CO into the first branch line connected to the injection pipe 1082The injection pipe 108 is connected to a subsea fixture 201.
As shown in FIG. 2, the seabed fixing apparatus 201 comprises an anchor pile 202 fixed on the seabed, a pipe bending limiting pipe 203 and a second booster pump 204, wherein two fixing bolts are arranged on the top of the anchor pile 202, one fixing bolt is fixedly connected with the other end of the first mooring line 109, the other fixing bolt is fixedly connected with the second mooring line 206, the pipe bending limiting pipe 203 and the CO are fixedly connected2The injection pipe 108 is connected to one end of the seabed, the other end of the pipe bend limiting pipe 203 is connected to a liquid phase pipe, the liquid phase pipe is connected to an inlet end of the second booster pump 204, a liquid phase valve is arranged on the liquid phase pipe between the pipe bend limiting pipe 203 and the second booster pump 204, and an outlet end of the second booster pump 204 is connected to the second CO through the liquid phase pipe2The injection pipe 205 is connected, and the outlet end of the second booster pump 204 is connected with the second CO2A liquid phase valve is arranged on the liquid phase pipeline between the injection pipes 205, and the second CO is2The injection pipe 205 is connected to the subsea containment device 3.
As shown in FIG. 3, the subsea containment device 3 comprises a subsea injection device 301, the subsea injection device 301 being provided with a dead bolt, a containment wellhead 306 and CO2The injection valve, the fixing bolt and the other end of the second mooring cable 206 are fixedly connected, and the sealed well head 306 is provided with liquid CO2Input port, CO2Inlet end of injection valve and secondary CO2Injection pipe 205 connected to CO2The outlet end of the injection valve is connected with a liquid phase pipeline, CO2The outlet end of the injection valve is provided with a second pressure sensor 302, a liquid phase pipeline is connected with the inlet end of a third booster pump 303, the outlet end of the third booster pump 303 is connected with the liquid phase pipeline, and the other end of the liquid phase pipeline is arranged in liquid CO of a sealed well head 3062In the input port, a leakage detection device 304 is arranged in front of the wellhead for sealing the wellhead 306, and liquid CO for sealing the wellhead 3062An injection rate monitoring device 305 is installed on the liquid phase pipe in the inlet.
As shown in FIG. 1, a first CO2The length of the injection pipe 108 is greater than the length of the first mooring line 109, the second CO2The length of the injection pipe 205 is greater than the length of the second mooring line 206.
First CO2Injection pipe 108, first mooring line 109, second CO2The injection pipe 205, the second mooring line 206 and the liquid phase conduit are all corrosion resistant.
As shown in fig. 2, the pipe bending limiting pipe 203 is a high-hardness corrosion-resistant steel pipe.
As shown in fig. 1, the liquid phase valve is connected with CO2The injection valves are all electrically controlled electromagnetic valves.
As shown in FIG. 3, liquid CO at wellhead 306 is sequestered2And a one-way sealing valve is arranged at the wellhead at the joint of the input port and the liquid phase pipeline and is sealed from the seabed to the inside of the seabed in a one-way manner.
As shown in fig. 4, the subsea containment device 3 may be connected to several subsea fixtures 201.
Example (b):
as shown in FIG. 1, liquid CO2First of all by CO2The transport vessel 101 transfers to the subsea fixture 201 and from the subsea fixture 201 to the subsea injection device 301, CO2The carrier 101 is fixed at the surface by a first mooring line 109.
Liquid CO2Storage in CO2Storing in a C-tank 102, by CO2The carrier 101 is transported to the target sea area, CO2Before the transport ship 101 arrives at the target sea area, the engineering ship carries out the first CO2The injection pipe 108, the first mooring line 109, is towed from the seabed to the surface and connected to the CO2The transport vessel 101 is on board for mooring positioning and injection preparation.
Start of liquid CO2During transportation, the liquid CO is pumped by the liquid cargo pump 1032Pumping out to ensure liquid CO2By the first temperature sensor 104 and the first pressure sensor 105, the liquid CO is detected2The temperature and the pressure are transmitted after the pressure and the temperature meet the transmission requirements. If the temperature is not satisfactory, liquid CO2Passing through a heat exchanger 106 litersWarm, if the pressure does not meet the requirement, the first CO is pressurized by the first booster pump 107 and then transmitted to the first CO2An injection pipe 108.
As shown in FIG. 2, liquid CO2By first CO2The injection pipe 108 is transferred to a subsea fixture 201, the subsea fixture 201 being fixed to the seabed by anchor piles 202, the first CO2The injection pipe 108 is connected to the second booster pump 204 through a pipe bending limiting pipe 203, and the pipe bending limiting pipe 203 can prevent the first CO2The injection pipe 108 generates a first CO caused by a break point at the sea bottom2Damage to the injection tube. Is pressurized by a second booster pump 204 and then is transmitted to the second CO2An injection pipe 205.
As shown in FIG. 3, liquid CO2By a second CO2The injection pipe is transported to the subsea containment device 301, the second CO2The injection pipe 205 is connected to the pipeline system of the subsea containment device, which is provided with a second pressure sensor 302 for detecting liquid CO2The pressure, if not sufficient, is pressurized by a third booster pump 303 and delivered to a sequestration wellhead 306 for delivery of liquid CO2And (5) injecting the mixture into the sea bottom for sealing. A leakage detection device 304 is arranged in front of the wellhead for detecting CO2Whether a leak is present; injection rate monitoring device 305, regulating liquid CO2The injection rate. A one-way sealing valve is arranged at the wellhead and is sealed from the seabed to the inside of the seabed in a one-way to prevent CO2And (4) leakage.
To fix CO2Transport vessel 101, first mooring line 109 and CO2The carrier 101 is connected to the subsea fixture 201 at the other end, forming a single point mooring system. The first CO2 injection pipe 108 length is greater than the first mooring line 109 length such that the first CO2The injection pipe 108 is free of CO2Axial tension of the carrier 101 and subsea fixtures 201, preventing first CO2The injection tube 108 is broken by the tensile force. The second mooring line 206 has one end connected to the bottom fixture 201 and the other end connected to the bottom containment unit 301 to assist in securing the bottom fixture 201. Second CO2The length of injection pipe 205 is greater than the length of second mooring line 206 so that the pipeline is not subject to the shafts of subsea fixtures 201 and 301And the pipeline is prevented from being broken and damaged by the tensile force.
As shown in fig. 4, the single point mooring system of the plurality of subsea fixtures 201 forms a multi-point mooring system. When the environmental conditions are severe or the directivity is not obvious, a single point mooring system is adopted to fix the ship and is connected with a CO2Injection pipe for CO2Transporting operation, at this time CO2The transport vessel 101 will rotate around the mooring point to the minimum force position to prevent the vessel from being damaged by the force. When sea conditions are good, a plurality of mooring cables can be adopted to fix the ship and perform a plurality of CO operations2Storage tanks transporting jobs simultaneously, i.e. each CO2The cabin is connected with a CO2Injection into the tube while carrying out liquid CO2The transmission operation saves the transmission time. Multiple CO2The transport ship can also carry out CO simultaneously2And (5) transmitting the operation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims (7)

1. CO (carbon monoxide)2The single-point mooring injection system of the transport ship is characterized by comprising liquid CO2The system comprises a marine transportation system (1), a seabed fixing device (201) and a seabed sealing device (3);
the liquid CO2The marine transport system (1) comprises CO2A transport vessel (101), the CO2A first mooring cable (109) is arranged on the transport ship (101), the other end of the first mooring cable (109) is fixed on the seabed fixing device (201), and the CO is2The transport ship (101) is internally provided with CO2Storage C tank (102), the CO2The top of the storage C-shaped tank (102) is provided with a liquid phase pipeline, and one end of the liquid phase pipeline is inserted into the CO2The inside of the C-shaped storage tank (102) is stored, a liquid cargo pump (103) is installed at the inlet end of the liquid phase pipeline, a first branch pipeline and a second branch pipeline are arranged at the other end of the liquid phase pipeline, and the first branch pipeline is directly connected with the second branch pipelineFirst CO2The injection pipe (108) is connected, set gradually two liquid phase valves on the first branch pipeline, the inlet end department of liquid phase valve sets up first temperature sensor (104) and first pressure sensor (105) respectively, the second branch pipeline of liquid phase pipeline and the entrance connection of heat exchanger (106), the entrance point of heat exchanger (106) sets up a liquid phase valve, the exit end of heat exchanger (106) is connected between two liquid phase valves on the first branch pipeline, sets up a branch pipeline again between two liquid phase valves, divide the pipeline to link to each other with the entrance point of first booster pump (107), the exit end of first booster pump (107) connect with the exit end of first CO booster pump (107) is connected2A first branch line to which an injection pipe (108) is connected, the first CO2An injection pipe (108) is connected with the seabed fixing device (201);
the seabed fixing device (201) comprises an anchor pile (202) fixed on the seabed, a pipeline bending limiting pipe (203) and a second booster pump (204), two fixing bolts are arranged at the top of the anchor pile (202), one fixing bolt is fixedly connected with the other end of the first mooring cable (109), the other fixing bolt is fixedly connected with the second mooring cable (206), and the pipeline bending limiting pipe (203) and the first CO are fixedly connected2The one end of filling pipe (108) at the seabed is connected, a liquid phase pipeline is connected to the other end of crooked limiting pipe of pipeline (203), the liquid phase pipeline with the entrance end of second booster pump (204) is connected, crooked limiting pipe of pipeline (203) with be equipped with the liquid phase valve on the liquid phase pipeline between second booster pump (204), the exit end of second booster pump (204) is through liquid phase pipeline and second CO2An injection pipe (205) is connected, and the outlet end of the second booster pump (204) is connected with the second CO2A liquid phase valve is arranged on a liquid phase pipeline between the injection pipes (205), and the second CO is2The injection pipe (205) is connected with the seabed sequestration device (3);
the seabed sealing and storing device (3) comprises a seabed injection device (301), wherein the seabed injection device (301) is provided with a fixed bolt, a sealing and storing wellhead (306) and CO2A filling valve, wherein the fixing bolt is fixedly connected with the other end of the second mooring cable (206), and the sealed well mouth (306) is provided with liquid CO2Input deviceOral cavity of the CO2Inlet end of injection valve and the second CO2An injection pipe (205) is connected, and the CO is2The outlet end of the injection valve is connected with a liquid phase pipeline, and the CO is2The exit end of injection valve is equipped with second pressure sensor (302), the inlet end connection of liquid phase pipeline and third booster pump (303), the liquid phase pipeline is connected to the exit end of third booster pump (303), the other end of liquid phase pipeline is arranged in the liquid CO of sequestration well head (306)2In the input port, a leakage detection device (304) is arranged in front of the sealing well head (306), and liquid CO of the sealing well head (306)2An injection rate monitoring device (305) is installed on the liquid phase pipeline in the inlet.
2. CO according to claim 12A carrier single point mooring injection system characterized in that said first CO2The length of the injection pipe (108) is greater than the length of the first mooring line (109), the second CO2The length of the injection pipe (205) is greater than the length of the second mooring line (206).
3. CO according to claim 12A carrier single point mooring injection system, wherein said first CO is2An injection pipe (108), a first mooring line (109), a second CO2The injection pipe (205), the second mooring line (206) and the liquid phase conduit are all corrosion resistant.
4. CO according to claim 12The single-point mooring injection system of the transport ship is characterized in that the pipeline bending limiting pipe (203) is a high-hardness corrosion-resistant steel pipe.
5. CO according to claim 12The single-point mooring injection system of the transport ship is characterized in that the liquid phase valve is connected with CO2The injection valves are all electrically controlled electromagnetic valves.
6. CO according to claim 12A transport vessel single point mooring injection system, characterized in thatSequestration of liquid CO at wellhead (306)2And a one-way sealing valve is arranged at the wellhead at the joint of the input port and the liquid phase pipeline and is sealed from the seabed to the inside of the seabed in a one-way manner.
7. CO according to claim 12The single-point mooring injection system of the transport ship is characterized in that the seabed sequestration device (3) can be connected with a plurality of seabed fixing devices (201).
CN202220091776.9U 2022-01-13 2022-01-13 CO2 transport ship single-point mooring injection system Active CN216969927U (en)

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Application Number Priority Date Filing Date Title
CN202220091776.9U CN216969927U (en) 2022-01-13 2022-01-13 CO2 transport ship single-point mooring injection system

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Application Number Priority Date Filing Date Title
CN202220091776.9U CN216969927U (en) 2022-01-13 2022-01-13 CO2 transport ship single-point mooring injection system

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CN216969927U true CN216969927U (en) 2022-07-15

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