JP2023005470A - Container for carbon dioxide transportation and method to transport carbon dioxide - Google Patents

Abstract

To provide a container for carbon dioxide transportation etc. of which utilization efficiency of loading space is efficient when no carbon dioxide is loaded and which is light.SOLUTION: According to the invention, a container for carbon dioxide transportation 2 is placed inside a rigid outer support, the container comprises a rigid tubular tank part 4 closed at both ends and a flexible inner tube 6 for storing carbon dioxide, which has a balloon shape and is arranged in the tank part with the blowing port connected to one end of the tank part and expandable and contractible in the tank part, the tank part has a two-layer structure including outer layers 8a, 10a... made of metal and inner reinforcing layers 8b, 10b... made of fiber material and arranged inside the outer layers, the body of the tank part is configured to be able to be disassembled along the longitudinal axis of the tank.SELECTED DRAWING: Figure 3

Description

CO2 TRANSPORT CONTAINER AND METHOD OF CO2 TRANSPORT TECHNICAL FIELD The present invention relates to a carbon dioxide shipping container and method of transporting carbon dioxide, and in particular, a relatively small capacity carbon dioxide shipping container sized to be placed in the interior space of an existing freight container, and the same. It relates to a method of transporting carbon dioxide using such a container.

From the viewpoint of global warming prevention, releasing carbon dioxide into the atmosphere has been regarded as a problem. In order to deal with such problems, it has been proposed to collect and store carbon dioxide generated in thermal power plants and the like.

In general, a reservoir for storing carbon dioxide is often located away from a thermal power plant or the like where carbon dioxide is generated. Therefore, it is necessary to transport the carbon dioxide captured from a carbon dioxide generating site such as a thermal power plant to a remote reservoir. This transportation includes transportation by vehicle, railroad, etc., as well as marine transportation by cargo ships.

From the viewpoint of transportation efficiency, it is desirable to transport carbon dioxide in a large-capacity container or tank.

However, carbon dioxide sources or carbon dioxide reservoirs may be located in locations where it is difficult to bring such large-capacity containers or tanks. In such a case, for example, a large number of small-capacity containers or tanks having the size of containers used in freight transportation are prepared as containers for carbon dioxide transportation, and carbon dioxide is stored in these containers, It is conceivable to carry out transportation by railroad or the like.

Here, carbon dioxide is preferably transported in a high pressure state from the viewpoint of transport efficiency, so as a container or tank used for transport, a container or tank made of metal or the like and having high pressure resistance is used. It will be. Containers or tanks having such high pressure resistance usually have high rigidity.

After transporting carbon dioxide from a place where carbon dioxide is generated, such as a thermal power plant, to a reservoir on the outbound route, such a container or tank with high pressure resistance is used for the next transport of carbon dioxide. returned to

In the return transportation, if there is no suitable cargo to be stored in a highly rigid container or tank for transporting carbon dioxide and transported to the place where carbon dioxide is generated, a container made of metal or the like having high pressure resistance or The tank will be transported empty from the storage site to the generation site.

Since highly rigid containers or tanks made of metal or the like are bulky, transportation of empty containers or tanks back to the place where carbon dioxide is generated is extremely inefficient in utilizing the loading space of a cargo ship or the like. Furthermore, such a container or tank has the problem of requiring a large storage area when stored when not in use.

Furthermore, highly rigid containers or tanks made of metal or the like may be difficult to transport, particularly by vehicle (trailer) or the like, because the container or tank itself is heavy.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a container for transporting carbon dioxide that is lightweight and has good utilization efficiency of the loading space when no carbon dioxide is contained.

Another object of the present invention is to provide a method of transporting carbon dioxide using a light-weight carbon dioxide transport container that is efficient in utilizing the loading space when no carbon dioxide is contained.

According to the invention,
A carbon dioxide shipping container positioned within a rigid outer support, comprising:
the container is
a rigid tubular tank portion closed at both ends;
a balloon-shaped flexible inner tube for accommodating carbon dioxide, which is arranged in the tank part with the blowing port connected to one end of the tank part, and is expandable and contractible in the tank part;
The tank part has a two-layer structure including an outer layer made of metal and an inner reinforcing layer made of a fiber material and arranged inside the outer layer, and the main body of the tank part is the tank. configured to be disassembled along a longitudinal axis;
Provided is a carbon dioxide transport container characterized by:

According to such a configuration, the inner tube prevents leakage of carbon dioxide, which is a fluid, and the pressure from the carbon dioxide contained in the inner tube in a pressurized state is transferred to the rigid tank located outside the inner tube. The pressurized carbon dioxide can be safely contained because it can be received by the unit.

In addition, since the tank part that receives pressure can be disassembled, after transporting carbon dioxide to a storage location, the rigid tank part can be disassembled and loaded on a cargo ship or the like in a reduced storage space to generate carbon dioxide. It can be transported to a place, and the utilization efficiency of the loading space of the transport means on the return trip is improved. Furthermore, the tank portion can be disassembled to reduce the storage space, so that the storage space when not used as a carbon dioxide transport container is also reduced, improving the efficiency of storage space utilization.

Furthermore, since the pressure resistance is improved by the inner reinforcing layer formed of a fiber material and arranged inside the outer layer, it is possible to reduce the weight by thinning the outer metal layer.

According to another preferred aspect of the invention,
The tank portion includes a semi-cylindrical upper half portion, a semi-cylindrical lower half portion, a one end side cap that closes one end side of the tank portion, and the other end side that closes the other end side of the tank portion. comprising a cap and
The upper half portion, the lower half portion, the one end side cap, and the other end side cap are detachably connected.

With such a configuration, the tank portion can be disassembled into smaller parts, so that the efficiency of utilization of the loading space of the transportation means on the return trip is increased.

According to another preferred aspect of the invention,
The inner reinforcing layers of the upper and lower halves are arranged such that the fibers of the fibrous material forming the inner reinforcing layers extend along a direction perpendicular to the longitudinal axis of the tank part. .

Examples of fiber materials include carbon fiber and glass fiber. For example, carbon fiber has ten times the tensile strength of steel in the thread direction, but is about 70% lighter than steel. Weight can be reduced.

According to another preferred aspect of the invention,
The upper half has a flange extending radially outwardly from each of the circumferentially open ends and the lower half has a flange extending radially outwardly from each of the circumferentially open ends. has
The upper half and the lower half are connected with the flanges in contact with each other.

According to such a configuration, by using the flange, it is possible to easily assemble the tank portion, which requires pressure resistance, from a disassembled state.

According to another preferred aspect of the invention,
connecting means for connecting the upper half flange and the lower half flange;

According to another preferred aspect of the invention,
The coupling means is aligned with a plurality of through holes provided in each of the upper and lower half flanges to align when the upper and lower halves are coupled. A connector is inserted through the through hole to connect and fix the flange of the upper half and the flange of the lower half.

According to such a configuration, it is possible to easily assemble the tank portion, which requires pressure resistance, from a disassembled state by using the through holes provided in the flange and the couplings inserted through the through holes.

According to another preferred aspect of the invention,
The connector has a bolt inserted through the aligned through holes and a nut attached to the bolt.

With such a configuration, the upper and lower halves can be connected and fixed by a simple operation of inserting the bolts through the aligned through holes and tightening the nuts.

According to another preferred aspect of the invention,
It further comprises a cylindrical protective collar that covers the inner peripheral surface of the through hole formed in the inner reinforcing layer.

According to such a configuration, the protection collar prevents the through-hole portion of the inner reinforcing layer formed of the fiber material from being damaged by the bolt.

According to another preferred aspect of the invention,
The outer support is a freight container.

With such a configuration, it is possible to transport carbon dioxide using existing freight containers.

According to another preferred aspect of the invention,
The outer support is a substantially rectangular rigid frame.

According to another preferred aspect of the invention,
The rigid frame is modular.

According to such a configuration, the rigid outer support for supporting the carbon dioxide transport container can also be disassembled and compacted for transport on the return trip.

According to another preferred aspect of the invention,
Filling and transporting pressurized carbon dioxide in any of the above carbon dioxide transport containers,
A method for transporting carbon dioxide characterized by the following is provided.

ADVANTAGE OF THE INVENTION According to the present invention, a container for transporting carbon dioxide is provided that is lightweight and has good utilization efficiency of the loading space in a state in which no carbon dioxide is contained.

Further, according to the present invention, there is provided a method of transporting carbon dioxide using a light-weight carbon dioxide transport container that is highly efficient in utilizing the loading space in a state in which no carbon dioxide is contained.

1 is a schematic perspective view showing the configuration of a preferred embodiment of a carbon dioxide transport container of the present invention placed within a freight transport container; FIG. FIG. 2 is an exploded perspective view of the carbon dioxide transport container of FIG. 1; FIG. 2 is a cross-sectional view of the carbon dioxide transport container taken along line III-III in FIG. 1; FIG. 4 is a partial cross-sectional view for explaining the structure of a through-hole in the rectangular flange of the carbon dioxide transport container; FIG. 4 is a schematic cross-sectional view illustrating attachment of a carbon dioxide transport container to a freight transport container; FIG. 4 is a schematic cross-sectional view of the carbon dioxide transport container in a state where the inner tube is not filled with carbon dioxide. FIG. 7 is a schematic cross-sectional view similar to FIG. 6 of the carbon dioxide transport container in a state where the inner tube is filled with carbon dioxide. 1 is a schematic perspective view of a rectangular frame used as an outer support in place of a freight container; FIG.

A preferred embodiment of the carbon dioxide transport container of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing the configuration of a carbon dioxide transport container 2 of the present embodiment arranged in a freight transport container 1 as an outer support portion, and FIG. 2 is an exploded perspective view of the transport container 2, and is a cross-sectional view of the carbon dioxide transport container taken along line III-III in FIG. 1. FIG.

In addition, carbon dioxide as used herein means not only pure carbon dioxide but also all fluids containing carbon dioxide as a main component.

For the freight container 1, which is the rigid outer support portion in this embodiment, it is preferable to use a standardized rectangular parallelepiped freight container based on ISO standards, for example, made of steel, aluminum, or the like. In this embodiment, the freight container 1 is assumed to be a freight container (a so-called 40-foot container) having a width of 2.352 m, a height of 2.395 m, and a depth of 12.03 m. , but not limited to.

Further, when the carbon dioxide is transported at a low temperature during transportation, the cargo transportation container 1 may be a so-called reefer container capable of adjusting the internal temperature in order to suppress the temperature rise of the carbon dioxide inside.

The carbon dioxide transport container 2 of the present embodiment is a transport container that is arranged in such a freight transport container 1 and stores high-pressure carbon dioxide therein.

As shown in FIGS. 1-3, the carbon dioxide transport container 2 comprises a rigid tank portion 4 . The tank part 4 of this embodiment has a substantially cylindrical shape with both ends closed, and has dimensions that substantially fill the internal space of the freight container 1 .

The tank part 4 is a pressure-resistant container made of a rigid material containing metal such as stainless steel and reinforcing fibers, and forms a substantially cylindrical container body closed at both ends. A heat insulating layer made of a heat insulating paint, a heat insulating material, or the like is provided on the outer surface or the inner surface of the tank portion 4 as necessary.

The carbon dioxide transport container 2 of the present embodiment further includes an inner tube 6 for containing carbon dioxide disposed within the tank portion 4 .
The inner tube 6 is made of a flexible and stretchable material, such as rubber, which is impermeable to carbon dioxide, and has a balloon-like shape.

The tank part 4 has a two-layer structure including an outer layer made of a highly rigid metal and an inner reinforcing layer made of a fiber material and arranged inside the outer layer. In this embodiment, stainless steel or the like is used as the highly rigid metal, and carbon fiber is used as the fiber material. Glass fiber or the like may be used as the fiber material.
In the carbon dioxide transport container 2 of this embodiment, which is housed in a 40-foot container, the outer layer made of stainless steel is set to have a thickness of about 5 mm, and the inner reinforcement layer made of carbon fiber is set to have a thickness of about 11.6 mm. . If the maximum compressive strength of about 100 Bar obtained by the outer layer and the inner reinforcing layer is to be obtained with only one stainless steel layer, a stainless steel layer with a thickness of about 93 mm is required.

As shown in FIG. 2, the tank portion 4 has a cylindrical tank body 12 that can be divided into an upper half portion 8 and a lower half portion 10 that constitute the center of the tank portion 4, and one end of the tank body 12. One end side cap 14 for closing the side and the other end side cap 16 for closing the other end side of the tank body 12 are provided. An opening 18 is formed in the center of the one end cap 14 .

In the carbon dioxide transport container 2 of this embodiment, the upper half portion 8 and the lower half portion 10 have substantially the same semi-cylindrical shape.
The upper and lower halves 8, 10 each have rectangular flanges 20, 22 extending radially outwardly from each of their circumferentially open ends. Each rectangular flange 20 , 22 has an elongated rectangular shape and extends over the entire length of the upper and lower halves 8 and 10 except at the axial ends of the open circumferential ends thereof. The upper half portion 8 and the lower half portion 10 are connected with the rectangular flanges 20 and 22 overlapping each other to form a cylindrical tank body 12 .

In addition, the upper and lower halves 8, 10 each have semi-annular flanges 24, 26 extending radially outwardly from each of their axial open ends. Each semi-annular flange 24 , 26 extends the full length of the open axial ends of the upper and lower halves 8 , 10 . When the upper and lower halves 8 and 10 are connected, the semi-annular flanges 24 , 26 form the annular flanges of the tank body 12 .

On the other hand, an annular flange 14a having a shape corresponding to the annular flange formed by the semi-annular flanges 24 and 26 is provided at the open ends of the one end cap 14 and the other end cap 16, which have a shallow bottomed cylindrical shape with one end open. 16a is formed. By joining the annular flanges 14a, 16a to the annular flanges of the tank body 12 formed by the semi-annular flanges 24, 26, both ends of the tank body 12 are closed and the tank portion 4 is formed.

In the carbon dioxide transport container 2 of this embodiment, the upper half portion 8 of the tank portion 4 is entirely made of metal and has a semi-cylindrical shape. It has a two-layer structure including an upper half inner reinforcing layer 8b made of fiber and having a semi-cylindrical shape constituting the inner reinforcing layer.
In the upper half inner reinforcing layer 8b, the fibers of the carbon fiber are distributed in the semi-cylindrical upper half inner reinforcing layer 8b in the circumferential direction indicated by arrow C in FIG. It is arranged so as to extend in the direction of

Since the upper half outer layer 8a and the upper half inner reinforcing layer 8b are adhered and fixed with an adhesive having a low Young's modulus, there is a gap between the upper half outer layer 8a and the upper half inner reinforcing layer 8b. An adhesive layer A is formed by an adhesive having a low Young's modulus (elastic adhesive). Specifically, it is an adhesive containing a silane-modified polymer as a main component, and for example, an adhesive sold by Henkel under the trade name of "Teroson MS9399" can be mentioned.

Similarly, the lower half portion 10 of the tank portion 4 is made entirely of metal and has a semi-cylindrical shape, and a lower half outer layer 10a constituting the outer layer and a semi-cylindrical shape made of carbon fiber. and a lower half inner reinforcing layer 10b constituting the inner reinforcing layer.
In the lower half inner reinforcing layer 10b, the fibers of the carbon fiber extend in the circumferential direction indicated by arrow C in FIG. arranged to extend in the direction

Since the lower-half outer layer 10a and the lower-half inner reinforcing layer 10b are adhered and fixed with an adhesive having a low Young's modulus, there is a gap between the lower-half outer layer 10a and the lower-half inner reinforcing layer 10b. An adhesive layer A is formed with an adhesive having a low Young's modulus.

Similarly to the upper half portion 8 and the lower half portion 10, the one end side cap 14 that closes the one end side of the tank body 12 is also formed of a one end side cap outer layer made of metal such as stainless steel and carbon fiber. It has a two-layer structure with a reinforcing layer inside the cap on one end side. The thickness of the one end side cap outer layer and the one end side cap inner reinforcing layer are set to about 5 mm and about 11.6 mm, respectively, like the outer layer and the inner reinforcing layer. Carbon dioxide transportation container of the present embodiment. The one end side cap inner reinforcing layer 14b has a structure in which a first layer whose fiber orientation direction is the X direction in FIG. 2 and a second layer whose fiber orientation direction is the Y direction in FIG. 2 are laminated.

The one end cap inner reinforcing layer 14b may be constituted by a carbon fiber layer arranged such that the fiber fibers extend radially, ie, diametrically, from the center.

Since the one end side cap outer layer and the one end side cap inner reinforcing layer are adhered and fixed with an adhesive having a low Young's modulus, there is a low Young's modulus between the one end side cap outer layer and the one end side cap inner reinforcing layer. An adhesive layer (not shown) is formed with an adhesive.

Furthermore, the other end cap 16 that closes the other end of the tank body 12 also has an internal structure similar to that of the one end cap 14. The other end cap outer layer is made of metal, and the other end cap is made of carbon fiber. and a reinforcing layer formed inside the cap on the other end side.

Since the other end side cap outer layer and the other end side cap inner reinforcing layer are bonded and fixed with an adhesive having a low Young's modulus, there is no Young's modulus between the one end side cap outer layer and the one end side cap inner reinforcing layer. An adhesive layer (not shown) is formed with an adhesive having a low viscosity.

As shown in FIG. 2, two rectangular flanges 20, 20 on the left and right sides of the upper half portion 8 are formed with a plurality of (six in this embodiment) through holes 28 at regular intervals. Similarly, the two flanges 22, 22 of the lower half portion 10 are also formed with a plurality of (six in this embodiment) through holes 30 at equal intervals.

Each through-hole 28 in the two rectangular flanges 20, 20 of the upper half 8 and each through-hole 30 in the two rectangular flanges 22, 22 of the lower half 10 are connected to the rectangular flange 20 of the upper half 8 and the lower one. The rectangular flanges 22 of the halves 10 are arranged to align when overlaid.

In the carbon dioxide transport container 2 of the present embodiment, the bolts 32 constituting the couplings are inserted through the through holes 28 and 30 aligned as described above, and the nuts 34 are screwed onto the bolts 32 so that the upper half portion is The rectangular flange 20 of 8 and the rectangular flange 22 of the lower half 10 are fastened (FIG. 3), and the upper half 8 and the lower half 10 are connected and fixed. A Shernut may be used as this connector.

According to such a configuration, the upper half portion 8 and the lower half portion 10 of the tank body 12 can be separated by releasing the connection by the bolts 32 and the nuts 34 .

A plurality of through-holes 36 are formed in the annular flange of the tank body 12 formed by the semi-annular flanges 24 and 26 at both axial ends of the upper half portion 8 and the lower half portion 10, and the one end cap 14 and the other end cap 14 are formed. A plurality of through holes 38 corresponding to the through holes 36 are also formed in the annular flanges 14 a and 16 a of the end cap 16 .

In the carbon dioxide transport container 2 of the present embodiment, the annular flanges of the one end cap 14 and the other end cap 16 and the tank body are arranged so that the through hole 38 is aligned with the through hole 36 of the annular flange of the tank body 12 . 12 annular flanges are joined, bolts 40 are inserted into aligned through-holes and tightened with nuts 42, one end cap 14 and the other end cap 16 are connected and fixed to the tank body 12, and both ends of the tank are closed. Part 4 is formed.

According to such a configuration, it becomes possible to remove each of the one end cap 14 and the other end cap 16 from the tank body 12 by releasing the connection by the bolt 40 and the nut 42 .

The inner tube 6 is a balloon-shaped member made of a flexible material such as rubber, as described above, and is configured so that carbon dioxide can be taken in and out through the blowing port 44 .
Since the inner tube 6 can expand to a volume larger than the size of the internal space of the tank portion 4, when the inner tube 6 accommodated in the tank portion 4 is filled with high-pressure carbon dioxide, the inner tube 6 expands. , expands to a dimension that abuts against the inner peripheral surface of the tank portion 4 , and further expansion is restricted by the tank portion 4 . Therefore, in this state, the internal pressure of the inner tube 6 due to high-pressure carbon dioxide is supported by the tank portion 4 .

Also, the blow-in port 44 of the inner tube 6 is detachably attached to the opening 18 formed in the cap 14 on the one end side of the tank portion 4 .

Next, the configurations of the through holes 28 of the rectangular flange 20 of the upper half portion 8 and the through holes 30 of the rectangular flange 22 of the upper half portion 8 will be described in detail with reference to FIG. FIG. 4 is a cross-sectional view showing the rectangular flange 20 of the upper half 8 and the rectangular flange 22 of the lower half 10 in mated condition.

As described above, the upper half portion 8 of the present embodiment includes the upper half outer layer 8a and the upper half inner reinforcing layer 8b that are adhesively fixed with an adhesive having a low Young's modulus. also has a two-layer structure. Therefore, the through hole 28 extends through two layers, the upper half outer layer 8a and the upper half inner reinforcing layer 8b.

In the carbon dioxide transport container 2 of the present embodiment, a cylindrical collar 46 that covers the inner peripheral surface of the through hole 28 is provided in the portion that passes through the rectangular flange 20 and the upper half inner reinforcing layer 8b of the through hole 28. is installed. The collar 46 protects the portion of the through-hole 28 that passes through the carbon fiber upper half inner reinforcing layer 8b from abrasion caused by the bolt 32 inserted through the through-hole 28 .

Further, in the carbon dioxide transport container 2 of this embodiment, as shown in FIG. I have.

The reinforcing bracket 48 is provided with a flange receiving adjustment gear unit 50 arranged between the rectangular flanges 20, 22 provided on the tank portion 4 and the frame fixing portion 1a of the container 1, and is provided at a plurality of positions that do not interfere with the bolts 32. is provided.

As shown in FIG. 5, the flange-receiving adjustment gear unit 50 has an adjustment rod 50a spiraled on its outer periphery and rotatable about its longitudinal axis as indicated by arrow a. The adjusting rod 50 a has one end screwed into the rectangular flanges 20 and 22 provided on the tank portion 4 and the other end screwed into the frame fixing portion 1 a of the container 1 . This embodiment is configured so that the tension between the rectangular flanges 20, 22 provided on the tank portion 4 and the frame fixing portion 1a of the container 1 can be adjusted by rotating the adjusting rod 50a. there is

An adjusting gear 50b that rotates integrally with the adjusting rod 50a is fixed to the adjusting rod 50a.

The flange-receiving adjustment gear unit 50 further includes an operating rod 50c having a helical outer circumference and driven to rotate in the direction of arrow b by a power source (not shown). The helical portion of the outer circumference of the operating rod 50c meshes with the adjusting gear 50b.
As a result, the rotation of the operating rod 50c is converted into the rotation of the adjusting rod 50a via the adjusting gear 50b, and the rotation between the rectangular flanges 20, 22 provided on the tank portion 4 and the frame fixing portion 1a of the container 1 is changed. You will have to adjust the tension.

Next, filling of carbon dioxide into the carbon dioxide transport container 2 and discharge of carbon dioxide from the carbon dioxide transport container 2 will be described.

FIG. 6 is a schematic cross-sectional view of the carbon dioxide transport container 2 when the inner tube 6 is not filled with carbon dioxide, and FIG. 7 is a schematic cross-sectional view similar to FIG. 6 of the carbon dioxide transport container 2 in a folded state. FIG.

When introducing carbon dioxide into the carbon dioxide transport container 2 ( FIG. 6 ) placed in the freight transport container 1 , a part of the freight transport container 1 is opened and attached to the one end cap 14 . Carbon dioxide having a pressure of about 100 Bar, for example, is introduced into the inner tube 6 from the blow port 44 of the inner tube 6 .

At the stage when the inner tube 6 is expanded by the introduced carbon dioxide to completely fill the internal space of the tank portion 4 (FIG. 7), the introduction of carbon dioxide is terminated, and the inlet 44 of the inner tube 6 is provided with a Inner tube blow-in port 44 is closed by closing the high pressure valve (not shown) located therein.

Next, the freight container 1 is closed, and the freight container 1 containing the carbon dioxide transport container 2 is transported to a destination such as a carbon dioxide reservoir by means of transportation such as a truck or ship.

If the freight transport container 1 is a reefer container or the like in which the internal environment such as temperature can be adjusted, the transport is performed while the internal environment inside the freight transport container 1 is appropriately adjusted.

When the carbon dioxide transport container 2 containing carbon dioxide arrives at a destination such as a carbon dioxide reservoir, the carbon dioxide is discharged from the carbon dioxide transport container 2 .

As described above, since the carbon dioxide is contained in the carbon dioxide transport container 2 in a pressurized state, the pressure of the carbon dioxide in the inner tube 6 is reduced by opening the blowing port 44 of the inner tube 6. It self-spouts from the inlet/outlet of the carbon dioxide transport container 2 until the pressure drops to near atmospheric pressure.

When the pressure of carbon dioxide in the inner tube 6 drops to near atmospheric pressure, the speed of self-jetting from the inlet/outlet of the carbon dioxide transport container 2 decreases. In this state, the inner tube 6 is pressed from behind, the inside of the inner tube 6 is sucked from the outside with a vacuum pump, or the like to accelerate the discharge of carbon dioxide from the inner tube 6, and the carbon dioxide is completely removed from the inner tube 6. to complete the discharge operation.

The present invention is not limited to the above-described embodiments, and various changes and modifications are possible within the scope of the technical idea described in the claims.

In the above-described embodiment, the one end cap 14 and the other end cap 16 are connected to the tank body 12 by joining the flanges together. 12 may also be used.

For example, female threads are provided on the inner peripheral surfaces of the open ends of the one end cap and the other end cap, female threads that can be screwed with the female threads of the caps are provided on the outer peripheral surface of the open end of the tank body, and the one end cap and the other end cap are provided with female threads. The one end cap and the other end cap may be detachably attached to the tank body by screwing the female threaded portion of the other end cap into the female thread of the tank body.

In the explanation of the carbon dioxide transport container 2 of the above embodiment, the rigid outer support portion is a freight transport container, but the outer support portion is not limited to a freight transport container, as shown in FIG. It may also be a prefabricated rigid rectangular frame 400 such as the one shown in FIG.

The rectangular frame 400 is a frame configured by detachably connecting twelve rod-shaped members 404 to connecting members 402 arranged at corners. The connecting member 402 and the rod-shaped member 404 are made of metal or other highly rigid material.

The internal space surrounded by the rectangular frame 400 has dimensions capable of accommodating the carbon dioxide transport container 2 . The overall dimensions of the rectangular frame 400 are preferably the same as those of the freight container described above. With such a configuration, the rectangular frame 400 housing the carbon dioxide transport container 2 can be transported by trucks, freight cars, ships, etc. for freight transport containers, or mixed with freight transport containers. becomes.

The carbon dioxide transport container 2 (tank portion 4) housed in the internal space surrounded by the rectangular frame 400 is fixed to the rectangular frame 400 by a fixture such as the reinforcing bracket described above. Become.

Also, the rectangular frame may have a shape in which two so-called 40-foot containers or ISO containers of other dimensions are vertically stacked, and two carbon dioxide transport containers 2 may be arranged vertically in parallel. . Furthermore, a frame having the dimensions and shape of a plurality of so-called 40-foot containers may be used.
With such a configuration, it is possible to load a ship using existing facilities such as a gantry crane installed in a harbor. In addition, it becomes easy to mix-load with other containers on a container ship.

It is also possible to use large tanks that meet the standards of container ships to transport carbon dioxide discharged from thermal power plants located on shores that are directly accessible to ships, for example.

1: Freight transport container 2: Carbon dioxide transport container 4: Tank part 6: Inner tube 8: Upper half part 10: Lower half part 12: Tank body 14: One end side cap 16: Other end side cap 18: Opening 20 : upper half rectangular flange 22: lower half rectangular flange 24: upper half semi-annular flange 26: lower half semi-annular flange 28: rectangular flange through hole 30: rectangular flange through hole 32: bolt 34: Nut 36: Through hole 38 of semi-annular flanges 24, 26: Through hole 40 of semi-annular flanges 14a, 16a: Bolt 42: Nut 44: Blow port 46: Collar

Claims (13)

A carbon dioxide shipping container positioned within a rigid outer support, comprising:
the container is
a rigid tubular tank portion closed at both ends;
a balloon-shaped flexible inner tube for accommodating carbon dioxide, which is arranged in the tank part with the blowing port connected to one end of the tank part, and is expandable and contractible in the tank part;
The tank part has a two-layer structure including an outer layer made of metal and an inner reinforcing layer made of a fiber material and arranged inside the outer layer, and the main body of the tank part is the tank. configured to be disassembled along a longitudinal axis;
A container for transporting carbon dioxide characterized by: The tank portion includes a semi-cylindrical upper half portion, a semi-cylindrical lower half portion, a one end side cap that closes one end side of the tank portion, and the other end side that closes the other end side of the tank portion. comprising a cap and
The upper half, the lower half, the one end cap, and the other end cap are detachably connected,
The container for transporting carbon dioxide according to claim 1. The inner reinforcing layers of the upper and lower halves are arranged such that the fibers of the fibrous material forming the inner reinforcing layers extend along a direction perpendicular to the longitudinal axis of the tank part. ,
The container for carbon dioxide transportation according to claim 2. The upper half has a flange extending radially outwardly from each of the circumferentially open ends and the lower half has a flange extending radially outwardly from each of the circumferentially open ends. has
The upper half and the lower half are connected with the flanges in contact with each other,
4. The container for transporting carbon dioxide according to claim 2 or 3. connecting means for connecting the upper half flange and the lower half flange;
The container for carbon dioxide transportation according to claim 4. The coupling means is aligned with a plurality of through holes provided in each of the upper and lower half flanges to align when the upper and lower halves are coupled. and a connector inserted through the through hole for connecting and fixing the flange of the upper half and the flange of the lower half,
The container for transporting carbon dioxide according to claim 5. the connector has a bolt inserted through the aligned through holes and a nut attached to the bolt;
The carbon dioxide transport container according to claim 6. Further comprising a cylindrical protective collar covering the inner peripheral surface of the through hole formed in the inner reinforcing layer,
The carbon dioxide transportation container according to claim 6 or 7. An adhesive layer formed of an adhesive having a low Young's modulus is disposed between the outer layer and the inner reinforcing layer.
The container for transporting carbon dioxide according to any one of claims 1 to 8. wherein the outer support is a freight container;
A container for transporting carbon dioxide according to any one of claims 1 to 9. wherein the outer support is a substantially rectangular rigid frame;
A container for transporting carbon dioxide according to any one of claims 1 to 9. wherein the rigid frame is prefabricated
A carbon dioxide transport container according to claim 11 . The container for transporting carbon dioxide according to any one of claims 1 to 12 is filled with pressurized carbon dioxide and transported,
A carbon dioxide transport method characterized by:

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