KR20110007450A - Carbon dioxide transport vessel - Google Patents

Abstract

The present invention relates to a ship for transporting carbon dioxide, and more particularly, to a ship for transporting carbon dioxide so that pipes connected to a plurality of storage tanks through one or a few common domes formed on the deck are connected to the upper side of the deck.

To this end, an embodiment of the present invention in the ship for transporting carbon dioxide having a plurality of storage tanks for storing carbon dioxide in the hull to the lower side of the deck at a low temperature and high pressure state, the plurality of storage tanks in communication with the liquid carbon dioxide Is characterized in that the liquid inlet pipe consisting of the liquid inlet pipe and the discharge liquid discharge pipe is introduced into the deck one or a few common domes connected to the upper side of the deck.

Accordingly, the structural strength of the deck can be prevented from being lowered by the dome, and the space utilization of the upper deck is improved while the carbon dioxide is smoothly loaded and unloaded.

CO2, Piping, Dome

Description

CO2 carrying ship

The present invention relates to a ship for transporting carbon dioxide, and more particularly, to a ship for transporting carbon dioxide so that pipes connected to a plurality of storage tanks through one or a few common domes formed on the deck are connected to the upper side of the deck.

Typically, ships carrying cargoes are developed in various forms, such as bulk carriers, container ships, oil tankers, and LNG ships, depending on their use, and these ships have various shapes to suit the characteristics of the cargo.

In particular, in recent years, environmental problems caused by greenhouse gases have occurred, and as the emission regulations of carbon dioxide are strongly regulated by international environmental conventions, technologies for storing carbon dioxide separately and embedding it in underground or subsea spaces are being developed. The ship transporting carbon dioxide is provided with a storage tank for transporting carbon dioxide in a liquid state by maintaining the carbon dioxide at low temperature and high pressure inside the hull.

This storage tank is very difficult to produce a large capacity due to the nature of maintaining a high pressure state, after making a large number of storage tanks of small capacity is installed in a single ship, as shown in Figure 7 a plurality of storage tank 100 It may be installed on the lower side of the deck 200.

In addition, as shown in FIG. 8, each storage tank 100 includes a liquid pipe 300 having a loading pipe 310 into which carbon dioxide is introduced and a discharge pipe 320 for discharging carbon dioxide, and steam generated from the storage tank. A gas pipe 400 through which gas (BOG) is discharged, and a transfer pump 500 for boosting carbon dioxide to be transported to a pipe are installed, and on the deck 200, various storage tanks 100 are provided on the upper part of each storage tank 100. The dome 201 through which the pipe passes is provided separately.

However, in the case of installing a separate pipe and a transfer pump in each storage tank as described above, not only the entire facility of the ship becomes very complicated, there is a problem that the unloading operation of carbon dioxide is very inefficient.

In addition, when a plurality of domes are installed on the deck as described above, not only the structural strength of the deck is lowered, but also the space utilization of the upper surface of the deck is very poor.

Accordingly, the present invention has been made in order to solve the conventional problems as described above, the object is that the connection pipe connected to the plurality of storage tanks through one or a few common domes formed on the deck is connected to the upper side of the deck To provide a ship for transporting carbon dioxide.

In addition, it has an object of minimizing the configuration of the pipe required to unload carbon dioxide to a plurality of storage tanks.

In addition, several storage tanks have the purpose of enabling one or a few pressure rise prevention valves (PSV) to be used in common.

In addition, there is an object to improve the reliability of the unloading operation by providing an extra transfer pump in the unloading operation of carbon dioxide.

In addition, all the carbon dioxide is discharged to the storage tank has an object to automatically shut off the operation of the transfer pump when the storage tank is empty.

In addition, it has an object to prevent idling in the air flowed into the transfer pump.

In addition, an object of the present invention is to ensure a smooth unloading of carbon dioxide without the transfer pump is exposed to the outside of the storage tank.

In order to achieve the above object, the present invention is a carbon dioxide transport ship equipped with a plurality of storage tanks for storing carbon dioxide in the hull in the hull to the lower side of the deck, in communication with the plurality of storage tanks Provides a ship for transporting carbon dioxide, characterized in that the liquid pipe group consisting of the liquid inlet pipe in which the liquid carbon dioxide is introduced and the discharged liquid discharge pipe is connected to the upper side of the deck, one or a few public domes are formed on the deck. do.

The liquid pipe group may include a liquid branch pipe connected to each of the storage tanks, and a liquid common pipe connected to the liquid branch pipe and integrally connected to the upper side of the deck through the common dome. Provide a ship for transporting carbon dioxide.

In addition, the gas branch pipe connected to the upper side of each of the storage tank and the vapor gas is discharged, the gas common pipe connected integrally while being in communication with the gas branch pipe, and through the common dome while communicating with the gas common pipe It provides a carbon dioxide transport vessel characterized in that the gas pipe further comprises a gas withdrawal pipe connected to the upper side of the deck.

In addition, the gas withdrawal pipe passing through the common dome provides a carbon dioxide transport vessel, characterized in that the pressure rise prevention valve is coupled to open automatically in accordance with the vapor gas pressure of the storage tank.

In addition, two or more liquid common pipes are arranged in parallel and are connected to the liquid branch pipes, respectively, and a transfer pump is coupled to each of the liquid common pipes, and each of the liquid common pipes is an on / off valve for shielding the flow of liquid carbon dioxide. Provides a ship for transporting carbon dioxide, characterized in that it is provided.

In addition, there is provided a ship for transporting carbon dioxide, characterized in that the sensing unit for detecting the amount of carbon dioxide stored in the storage tank, and automatically opens and closes the on-off valve in preparation for a preset reference value.

In addition, the sensing unit provides a ship for transporting carbon dioxide, characterized in that to stop the operation of the transfer pump when it detects that all the carbon dioxide stored in the storage tank is discharged.

In addition, in the ship for transporting carbon dioxide having a plurality of storage tanks for storing carbon dioxide at a low temperature and high pressure in the hull to the lower side of the deck, the plurality of storage tanks are liquid branch connected to the lower side of each of the storage tanks It is connected to the pipe and the liquid common pipe connected to each of the liquid branch pipes integrally, and inside any part of the storage tank, connected to the discharge pipe for discharging the carbon dioxide stored through the common dome formed on the deck It provides a ship for transporting carbon dioxide, characterized in that the inner transfer pump is provided.

Thus, by providing a carbon dioxide transport vessel that allows the pipe connected to the plurality of storage tanks through one or a few common domes formed on the deck to the upper side of the deck, compared to the prior art that forms a plurality of individual domes In addition to preventing the structural strength of the deterioration, it has the effect of improving the space utilization of the upper deck.

In addition, the liquid pipe group is composed of a liquid branch pipe and a liquid common pipe has the effect that the carbon dioxide stored in a plurality of storage tanks are smoothly injected or discharged through a single liquid common pipe.

In addition, the system for discharging the liquid carbon dioxide has an effect that it is possible to unload the carbon dioxide uniformly to the entire storage tank with one transfer pump provided in the liquid common.

In addition, by communicating with each storage tank to the gas common pipe has an effect that can maintain the internal pressure of each storage tank evenly.

Furthermore, by installing a single pressure increase prevention valve in the gas outlet pipe, it is possible to force the vapor gas to multiple storage tanks, thereby significantly reducing the number of installations of the pressure increase prevention valve while ensuring the stability of the storage tank operation. It has the effect of simplifying the structure and increasing convenience of maintenance.

In addition, by forming two or more liquid common pipes in the system for discharging liquid carbon dioxide so that the carbon dioxide is discharged by a transfer pump coupled to a separate liquid common pipe, the carbon dioxide is discharged more quickly, as well as some Even if the transfer pump is broken or checked, stable discharge is possible.

In addition, the sensing unit is provided so that the storage and discharge function is automatically stopped when carbon dioxide is excessively stored or exhausted in the storage tank, thereby increasing the safety of loading and discharging carbon dioxide, and more easily manage the work. To have.

In addition, by stopping the operation of the transfer pump by the detection of the sensing unit to prevent the idling in the air flow state into the transfer pump, to prevent damage to the transfer pump while the transfer pump is rotated in the inflow of air or vacuum state Will have the effect.

In addition, the present invention allows the internal transfer pump to be installed inside the storage tank and at the same time by connecting the transfer pump to facilitate the smooth loading and unloading of carbon dioxide without the exposure pump to the outside of the storage tank, As the space occupied by the transfer pump disappears, not only the utilization of space inside the vessel is further improved, but also uniform pressure and pressure of the plurality of storage tanks can be uniformly loaded and unloaded.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

However, the same reference numerals for the same components are used.

Figure 1 is a schematic configuration diagram showing a first embodiment of the present invention, as shown in the lower side of the deck 1 is provided with a plurality of storage tanks for storing carbon dioxide in the interior of the hull at a low temperature and high pressure state In a ship for transporting carbon dioxide, a liquid composed of a liquid inlet pipe (3a) communicating with a plurality of storage tanks (2) into which liquid carbon dioxide is introduced into the storage tank, and a liquid discharge pipe (3b) discharged from the storage tank. One or a few common domes 11 are formed on the deck 1 to which the pipe group 3 is connected to the upper side of the deck 1.

At this time, the common dome 11 is formed in the form of a hole penetrated up and down on the deck (1) of the ship, while the above-described liquid pipe group 3 is connected to the upper side of the deck (1) carbon dioxide in the ground or seabed It acts as a pathway to connect with the store. The liquid inlet pipe 3a and the liquid discharge pipe 3b provided in each storage tank 2 are formed on the deck by being connected to the upper side of the deck through a common dome 11 formed on the upper deck 1. The number of domes can be reduced, thereby increasing the space utilization on top of the deck while reducing the structural strength degradation of the deck.

The number of the common dome is appropriately determined according to the size of the ship and the number of storage tanks accordingly, and when the hull is large and a large number of storage tanks are provided, it is convenient to bundle and manage the storage tanks in several packages. Each package can have one common dome. In addition, when the hull is relatively small and a few storage tanks are installed, one common dome may be formed so that all the storage tanks use one common dome.

At this time, the liquid pipe group (3) consists of a liquid inlet pipe for injecting and storing liquid carbon dioxide into the storage tank, and a liquid discharge pipe for discharging and discharging the carbon dioxide of the stored liquid.

In addition, although not shown is provided with a gas pipe used to inject the carbon dioxide which is a gas to discharge the vapor gas generated from the storage tank or to boost the internal pressure of the storage tank.

In addition, the liquid pipe group (3) of the discharge system is provided with a transfer pump (P) consisting of a conventional fluid transfer pump for the transfer of liquid carbon dioxide, it is preferable to discharge the carbon dioxide quickly and smoothly. .

FIG. 2 is a schematic configuration diagram showing a second embodiment of the present invention, which includes all the components of the first embodiment described above, and includes the storage pipe 2 in each of the liquid pipe groups 3 described above. The liquid branch pipe 31 to be connected, and the liquid common pipe 32 is connected to the liquid branch pipe 31 and integrally connected to the upper side of the deck (1) through the common dome (11).

The liquid pipe group 3 consisting of the liquid branch pipe 31 and the liquid common pipe 32 is provided in the liquid inlet pipe 3a into which the liquid carbon dioxide flows into the storage tank, or the liquid carbon dioxide is discharged from the storage tank. It may optionally be provided in the liquid discharge pipe (3b). More preferably, each of the liquid inlet pipe 3a and the liquid discharge pipe 3b comprises a liquid branch pipe 31 and a liquid common pipe 32.

At this time, the liquid common pipe 32 for discharging the liquid carbon dioxide is provided with a transfer pump (P), so that the operation of discharging carbon dioxide to a plurality of storage tanks 2 only by the operation of the transfer pump (P) to be made smoothly. By doing so, the operation of discharging the carbon dioxide to the entire storage tank (2) consisting of a plurality of simply by controlling this one transfer pump (P) will be made easily.

Of course, the liquid common pipe for injecting the liquid carbon dioxide into the storage tank correspondingly provided with a transfer pump, it may be configured to facilitate the storage of the liquid carbon dioxide.

In this case, by allowing the liquid common pipe 32 to be connected to the upper side of the deck 1 through the common dome 11, the number of pipes connected to the upper side of the deck 1 is minimized to further improve space utilization. The reduced number of simplifies the operation and maintenance and reduces the operating costs for this.

At this time, the liquid branch pipe 31 and the liquid common pipe 32 for discharging the liquid carbon dioxide are arranged on the lower side of the storage tank 2, thereby discharging the liquid carbon dioxide stored in the storage tank 2, It is preferable to allow the liquid carbon dioxide stored in the storage tank 2 to flow into the liquid branch pipe 31 more quickly by the load of the carbon dioxide itself.

Figure 3 is a schematic configuration diagram showing a third embodiment of the present invention, in this embodiment includes all of the components of the second embodiment described above, in addition, the piping of the gas carbon dioxide for discharging or injecting the gaseous carbon dioxide is common The gas piping unit 4 is to be further provided.

Specifically, the gas piping unit 4 is connected to the upper side of each storage tank (2) and the gas branch pipe 41 which the vapor gas is discharged, and the gas common pipe connected in one piece while being in communication with the gas branch pipe (41) The pipe 42 and the gas withdrawal pipe 43 is connected to the upper side of the deck 1 via the common dome 11 while communicating with the common gas pipe 42.

The gas branch pipe is connected to the upper side of the storage tank to smoothly discharge the vapor gas generated inside the storage tank. The gas common pipe communicates with each gas branch pipe to make the vapor gas communicate with each other. By allowing the gas common pipe to be suddenly generated in some steam tanks to be transferred to another storage tank, it is possible to maintain a constant internal pressure between at least the storage tank managed by the package.

On the other hand, the gas withdrawal pipe 43 passing through the common dome 11 is coupled to the pressure increase prevention valve 44 that is automatically opened in accordance with the vapor gas pressure of the storage tank (2).

Here, the pressure increase valve 44 (PSV) has a well-known configuration for lowering the internal pressure of the storage tank by automatically opening at a preset allowable pressure limit when the internal pressure of the storage tank rises due to excessive generation of steam gas.

In this case, at least one or preferably a plurality of pressure rise prevention valves 44 are installed in the gas outlet pipe 43 to have safety management for a plurality of storage tanks communicating with the gas outlet pipe at once.

That is, a plurality of storage tanks are communicated with the gas branch pipe and the gas common pipe, and a plurality of pressure rise preventing valves 44 are provided in the gas outlet pipe communicating with the gas common pipe, so that at least one storage tank is provided. When the pressure of the storage tanks that are in communication with each other through the gas common pipe increases due to the excessively generated steam gas, the pressure increase prevention valve operates to force the vapor gas to be exhausted.

Such a pressure increase prevention valve (PSV) is conventionally provided with two or more for each storage tank, in the case where a plurality of storage tanks are provided in the ship as in the present invention is to attach a separate pressure increase prevention valve for each storage tank In this case, not only the pipe structure is complicated, but also regular inspection and repair are very cumbersome.

Therefore, by installing a pressure increase prevention valve in the gas common pipe 43 which is communicated with a plurality of storage tanks and drawn out to one common dome 11, the number of pressure increase prevention valves installed in the entire ship is drastically reduced. You can eliminate the hassle.

In addition, the conventional pressure rise prevention valve is installed in each pressure tank, the space utilization is lowered, the difficulty of management, such as a long time for regular maintenance is solved.

Figure 4 is a schematic configuration diagram showing a fourth embodiment of the present invention, in this embodiment includes the components of the second to third embodiments described above, the liquid common pipe 32 of the discharge system is two or more The parallel arrangement is connected to each of the liquid branch pipe (31), the transfer pump (P) is coupled to each of the liquid common pipe 32, each of the liquid common pipe (32) on and off valve for shielding the flow of liquid carbon dioxide (V) is provided.

That is, when one or more transfer pumps mounted on the common liquid pipe are connected in parallel, and when any one of the transfer pumps fails or stops operation, the shut-off valves before and after the transfer pump are shut off, and the liquid carbon dioxide is transferred to another transfer pump. Is to be transferred. In addition, it is also possible to operate two or more transfer pumps (P) at the same time to quickly discharge the carbon dioxide. In this case, it is possible to prepare for a failure of the transfer pump, thereby increasing the operational reliability.

FIG. 5 is a schematic configuration diagram showing a fifth embodiment of the present invention. In this embodiment, all the components of the second to fourth embodiments described above are included, and in addition, the carbon dioxide stored in the storage tank 2 It further comprises a detection unit 5 for detecting the amount, and the amount of carbon dioxide stored in any one of the storage tank in contrast to the preset reference value is out of the reference value and automatically shuts off the flow of the opening and closing valve of the discharge system will be.

The sensing unit 5 has a sensing sensor 51 for sensing the amount of carbon dioxide in the liquid phase in the storage tank, and receives and processes an electrical signal from the sensing sensor 51, thereby opening and closing the valve V and the transfer pump ( A control unit for transmitting the operation command of P) is included.

At this time, the detection sensor 51 is formed of a conventional water level sensor for detecting the amount of liquid carbon dioxide stored in the storage tank 2 is provided in each storage tank.

The control unit 52 receives the result measured by the sensor as an electrical signal, when all the carbon dioxide stored in the storage tank 2 is discharged or buffered when the carbon dioxide is unloaded, or the liquid phase inside the storage tank It is determined that carbon dioxide is stored below a certain storage amount or above a certain storage amount. In this case, the control unit 52 transmits an operation command to automatically close the above-described shut-off valve, so that management of the discharge and stacking operation of the liquid carbon dioxide is made easier and safer.

In addition, the control unit 52 transmits a control command to the transfer pump to stop the operation of the transfer pump P when the storage tank 2 is determined to be completely empty as well as the opening / closing control of the opening / closing valve described above. (P) is prevented from being damaged while rotating in vacuum or idling by inflow of air.

6 is a schematic configuration diagram showing a sixth embodiment of the present invention. In the present embodiment, the configuration, function, and operation are the same as those of the first to fifth embodiments described above except for the following description.

In the ship for transporting carbon dioxide according to the present embodiment, in the ship for transporting carbon dioxide provided with a plurality of storage tanks 2 for storing carbon dioxide in the hull at a lower side of the deck 1 at a low temperature and high pressure, the plurality of storage The tank (2) is in communication with the liquid branch pipe (31) connected to the lower side of each of the storage tank (2), and the liquid common pipe (32) connected integrally with each of the liquid branch pipe (31), Inside some of the storage tank is provided with an internal transfer pump (P1) connected to the discharge pipe (6) for discharging the carbon dioxide stored through the common dome (11) formed on the deck (1).

The plurality of storage tanks are in communication with each other through the liquid branch pipe 31 and the liquid common pipe 32 connected to the lower side of each storage tank. Therefore, when the level of the liquid carbon dioxide in one storage tank falls or rises, the level of the liquid carbon dioxide in each storage tank is maintained by affecting the level of the other storage tanks.

Inside of some of the storage tank is provided with an internal transfer pump (P1), the discharge pipe 6 for discharging the liquid carbon dioxide to the outside by the internal transfer pump is connected.

In this case, when the liquid carbon dioxide of the storage tank is unloaded to the outside by operating the internal transfer pump provided in the storage tank, the liquid carbon dioxide of the other storage tank connected to the liquid common pipe is introduced, so that the liquid carbon dioxide in the entire storage tank Can be discharged.

Thus, by placing the internal transfer pump (P1) inside the storage tank (2), the pump device is not exposed to the inside of the vessel not only improves the space utilization, but also makes the connection of the pipe more easily.

The present invention can be applied to a case in which a liquid cargo transported in a pressurized, low temperature state including carbon dioxide is transported to a storage tank which is a plurality of pressure vessels.

1 is a schematic configuration diagram showing a first embodiment of the present invention.

2 is a schematic structural diagram showing a second embodiment of the present invention;

3 is a schematic structural diagram showing a third embodiment of the present invention;

4 is a schematic structural diagram showing a fourth embodiment of the present invention;

5 is a schematic structural diagram showing a fifth embodiment of the present invention;

6 is a schematic structural diagram showing a sixth embodiment of the present invention;

7 is a schematic structural diagram showing an example of a conventional ship for transporting carbon dioxide.

8 is an open structure diagram of a deck and a dome of a conventional ship for transporting carbon dioxide.

Explanation of symbols on the main parts of the drawings

1: Deck 11: Public Dome

2: storage tank

3: liquid piping group

3a: liquid inlet pipe 3b: liquid discharge pipe 31: liquid branch pipe

32: common liquid pipe P: transfer pump

4: gas piping

41: gas branch piping 42: gas common piping 43: gas withdrawal piping

44: pressure rise prevention valve

5: detection unit

51 sensor 52: control unit

6: discharge pipe

P1: Internal transfer pump

V: On-off valve

Claims (7)

In a ship for transporting carbon dioxide having a plurality of storage tanks (2) for storing carbon dioxide in a hull at a lower side of the deck (1) at a low temperature and high pressure, The liquid pipe group 3, which is connected to the plurality of storage tanks 2 and includes a liquid inlet pipe 3a for introducing liquid carbon dioxide and a liquid discharge pipe 3b for discharging, is connected to the upper side of the deck 1. Carbon dioxide transport ship, characterized in that one or a few common dome (11) is formed on the deck (1). In claim 1, The liquid pipe group (3) A liquid branch pipe 31 connected to each of the storage tanks 2, Carbon dioxide transport ship, characterized in that it comprises a liquid common pipe (32) connected integrally with each of the liquid branch pipe (31) and connected to the upper side of the deck (1) through the common dome (11). In claim 1, A gas branch pipe 41 connected to an upper side of each of the storage tanks 2 to discharge steam gas; The gas common pipe 42 and integrally connected to communicate with the gas branch pipe 41, The gas pipe 4 is further provided with a gas outlet pipe 43 connected to the upper side of the deck 1 through the common dome 11 while communicating with the gas common pipe 42 is further provided. CO2 transport vessel. 4. The method of claim 3, The gas withdrawal pipe 43 passing through the common dome 11 is a carbon dioxide transport vessel, characterized in that the pressure rise preventing valve 44 is automatically opened in accordance with the vapor gas pressure of the storage tank (2) is coupled. . In claim 4, A ship for transporting carbon dioxide, characterized by sensing the amount of carbon dioxide stored in the storage tank (2) and automatically opening and closing the on / off valve in preparation for a preset reference value. In claim 5, The ship for transporting carbon dioxide, characterized in that to stop the operation of the transfer pump (P) when the sensing unit (5) detects that all the carbon dioxide stored in the storage tank (2) is discharged. In the ship for transporting carbon dioxide provided with a plurality of storage tanks (2) for storing carbon dioxide in the hull at the lower side of the deck (1) at low temperature and high pressure, The plurality of storage tanks 2 are liquid branch pipes 31 connected to the lower side of each of the storage tanks 2, and liquid common pipes 32 integrally connected to the liquid branch pipes 31, respectively. In communication, Inside some of the storage tank, the inner transfer pump (P1) is connected to the discharge pipe (6) for discharging the carbon dioxide stored through the common dome (11) formed on the deck (1) is provided. Carbon dioxide transport vessels.

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