Apparatus for fixing carbon dioxide

Abstract

This apparatus for fixing carbon dioxide comprises a generation device and a portable unit. The generation device includes at least one among a carbonate generation unit, an iron chloride generation unit, and an iron carbonate generation unit. The portable unit supports the generation device in a transportable manner.

Description

Carbon dioxide fixation device

[0001] This disclosure relates to a carbon dioxide fixation apparatus. This application claims priority under Japanese Patent Application No. 2024-229653, filed on 26 December 2024. All contents contained in said Japanese Patent Application are incorporated herein by reference.

[0002] Japanese Patent Publication No. 2011-236059 (Patent Document 1) describes a method for fixing carbon dioxide from the atmosphere.

[0003] Japanese Patent Publication No. 2011-236059

[0004] The carbon dioxide fixation apparatus according to this disclosure comprises a generating device and a portable unit. The generating device includes at least one of a carbonate generating unit, an iron chloride generating unit, and an iron carbonate generating unit. The portable unit supports the generating device so that it can be transported.

[0005] Figure 1 is a schematic side view showing the configuration of a carbon dioxide fixation apparatus according to the first embodiment. Figure 2 is a schematic diagram showing the operation of the generating apparatus. Figure 3 is a schematic side view showing the positional relationship of the reaction vessels in the carbon dioxide fixation apparatus. Figure 4 is a schematic side view showing the configuration of a carbon dioxide fixation apparatus according to the second embodiment. Figure 5 is a schematic side view showing the configuration of a carbon dioxide fixation apparatus according to the third embodiment.

[0006] The purpose of this disclosure is to provide a carbon dioxide fixation device that can be easily transported to locations where waste liquids such as acids or alkalis, as well as carbon dioxide, need to be recovered.

[0007] According to this disclosure, it is possible to provide a carbon dioxide fixation device that can be easily transported. First, an overview of the embodiments of this disclosure will be described.

[0008] (1) The carbon dioxide fixation apparatus according to this disclosure comprises a generating apparatus and a portable unit. The generating apparatus includes at least one of a carbonate generating unit, an iron chloride generating unit, and an iron carbonate generating unit. The portable unit supports the generating apparatus so that it can be transported.

[0009] (2) In the carbon dioxide fixation apparatus described in (1) above, the carbonate generation unit may generate carbonate from carbon dioxide and an alkaline solution. The alkaline solution may contain sodium hydroxide.

[0010] (3) In the carbon dioxide fixation apparatus described in (2) above, the carbonate may be in slurry or solid form.

[0011] (4) In the carbon dioxide fixation apparatus according to any of (1) to (3) above, the iron chloride production section may produce iron chloride from hydrochloric acid and iron.

[0012] (5) In the carbon dioxide fixation apparatus described in (4) above, the iron chloride may be in slurry or solid form.

[0013] (6) In the carbon dioxide fixation apparatus according to any of (1) to (5) above, the iron carbonate generation unit may generate iron carbonate from the carbonate generated in the carbonate generation unit and the iron chloride generated in the iron chloride generation unit.

[0014] (7) In the carbon dioxide fixation apparatus according to any of (1) to (6) above, the generating apparatus may include a carbonate generating section, an iron chloride generating section, and an iron carbonate generating section.

[0015] (8) In the carbon dioxide fixation apparatus described in (7) above, the carbonate generation section may include a first reaction vessel in which carbonate is produced. The iron chloride generation section may include a second reaction vessel in which iron chloride is produced. The iron carbonate generation section may include a third reaction vessel in which iron carbonate is produced. The first and second reaction vessels may be positioned higher than the third reaction vessel. The carbonate may move from the first reaction vessel to the third reaction vessel by gravity. The iron chloride may move from the second reaction vessel to the third reaction vessel by gravity.

[0016] (9) A carbon dioxide fixation device according to any of (1) to (8) above may be equipped with an automatic vehicle. The automatic vehicle may be connected to a portable unit and may tow the portable unit.

[0017] (10) In the case of a carbon dioxide fixation device according to any of (1) to (9) above, the portable part may consist of a self-propelled vehicle.

[0018] (11) In the carbon dioxide fixation apparatus according to any of (1) to (10) above, the portable part may include a container for housing the generating device and a trolley for supporting the container.

[0019] (12) The portable part of the carbon dioxide fixation device according to any of (1) to (11) above may be operated remotely.

[0020] (13) A carbon dioxide fixation device according to any of (1) to (12) above may be equipped with a generator. The generator may be supported by a portable part and supply power to the generating device.

[0021] Next, the details of the embodiments of this disclosure will be described with reference to the drawings. In the following drawings, identical or corresponding parts will be given the same reference numerals, and their descriptions will not be repeated.

[0022] (First Embodiment) Figure 1 is a schematic side view showing the configuration of a carbon dioxide fixation device 100 according to the first embodiment. As shown in Figure 1, the carbon dioxide fixation device 100 according to the first embodiment includes a generating device 1, a portable unit 4, a self-propelled vehicle 5, and a generator 6. In Figure 1, the generating device 1 and the generator 6 are shown by dotted lines.

[0023] The portable unit 4 supports the generating device 1 and the generator 6 so that they can be transported. Specifically, the portable unit 4 includes a mounting unit 41, wheels 42, a housing unit 43, and a support unit 44. The generating device 1 and the generator 6 are arranged on the mounting unit 41. The housing unit 43 is connected to the mounting unit 41 so as to cover the generating device 1 and the generator 6.

[0024] The housing portion 43 may be provided with an opening mechanism (not shown). The opening mechanism may be provided on the side of the housing portion 43 or on the top surface of the housing portion 43. In this way, the generating device 1 and the generator 6 can be moved in and out of the housing portion 43.

[0025] The wheels 42 are located below the loading section 41. The wheels 42 roll on the floor or ground. In this way, the carbon dioxide fixation device 100 is transported. That is, the generating device 1 and the generator 6, which are located on top of the loading section 41, are transported by the rolling of the wheels 42. The wheels 42 include a front wheel section 42F and a rear wheel section 42R. The front wheel section 42F is located in front of the rear wheel section 42R.

[0026] The support portion 44 is positioned behind the rear wheel portion 42R. When the portable portion 4 is moving, the support portion 44 is fixed in a position away from the floor or ground, as shown in Figure 1. On the other hand, when the portable portion 4 is fixed in a desired position, the support portion 44 is fixed in a position in contact with the floor or ground. In this way, the support portion 44 supports the mounting portion 41 so that it does not tilt relative to the floor or ground.

[0027] The self-propelled vehicle 5 is connected to the portable unit 4 via the connecting part 51. The self-propelled vehicle 5 tows the portable unit 4. In this way, the carbon dioxide fixation device 100 may be transported.

[0028] The portable unit 4 may include a trolley and a container. The container is composed of, for example, a mounting section 41 and a housing section 43. In other words, the container houses the generation device 1. The trolley supports the container. The carbon dioxide fixation device 100 may be transported by moving the trolley manually. By unloading the container from the trolley to the work site, the generation device 1 can be driven at the desired location.

[0029] The generating device 1 includes at least one of the carbonate generating unit 10, the iron chloride generating unit 20, and the iron carbonate generating unit 30. In the carbon dioxide fixation device according to the first embodiment, as shown in Figure 1, the generating device 1 includes all of the carbonate generating unit 10, the iron chloride generating unit 20, and the iron carbonate generating unit 30. In other words, all of the carbonate generating unit 10, the iron chloride generating unit 20, and the iron carbonate generating unit 30 are arranged on the mounting unit 41 so that they can be transported. In this way, the portable unit 4 supports the generating device 1, allowing the carbon dioxide fixation device 1 to be operated at any location.

[0030] Furthermore, by using the carbon dioxide fixation device 100, the generation device 1 can be moved to a desired location. In other words, in the event of a disaster, the generation device 1 can be moved to a desired location and operated temporarily. In addition, wiring and piping work are not required for the installation and operation of the generation device 1. As a result, the installation cost of the generation device 1 can be reduced.

[0031] The generator 6 supplies power to the generating device 1. In this way, the generating device 1 can be driven to fix carbon dioxide. Note that the carbon dioxide fixation device 100 does not necessarily have a generator 6, and power may be supplied to the generating device 1 from an externally located generator.

[0032] (Operation of the Generating Device) Next, we will explain the operation of the generating device 1 that fixes carbon dioxide. Figure 2 is a schematic diagram showing the operation of the generating device 1.

[0033] <Operation of the carbonate generation unit> The carbonate generation unit 10 generates carbonate. Carbonate is produced from carbonate ions (CO2). ３ ２－ The compound is not particularly limited as long as it contains ). For example, a carbonate is sodium bicarbonate (NaHCO3). ３ ), sodium carbonate (Na ２ CO ３ ), or sodium sesquicarbonate. Sodium sesquicarbonate is a substance in which sodium bicarbonate and sodium carbonate coexist as a double salt.

[0034] The carbonate generation unit 10 generates carbon dioxide (CO2) contained in the atmosphere. ２ A carbonate is produced from the alkaline solution. The alkaline solution contains sodium hydroxide (NaOH). The alkaline solution may also contain sodium carbonate. In other words, the alkaline solution may be a mixture of sodium hydroxide and sodium carbonate. In the carbon dioxide fixation apparatus 100 according to the first embodiment, the alkaline solution may be waste liquid discharged from a factory or the like.

[0035] The carbonate generation unit 10 includes a first reaction vessel 11. The alkaline solution is sent into the first reaction vessel 11 using a pump or the like. The carbon dioxide to be immobilized is also sent into the first reaction vessel 11. In this way, in the first reaction vessel 11, the carbon dioxide reacts with the sodium hydroxide contained in the alkaline solution to produce carbonate.

[0036] The carbonate produced in this way is transported by the transport unit 4. The transported carbonate may be in liquid form. That is, the carbonate may be an aqueous solution in which sodium carbonate is dissolved in a solvent such as water. The carbonate may be in slurry form or solid form. That is, the carbonate may be sodium bicarbonate (powdered baking soda) or sodium sesquicarbonate. This makes it easier to transport the carbonate.

[0037] <Operation of the iron chloride production unit> The iron chloride production unit 20 produces iron chloride (FeCl ２ Specifically, the iron chloride generation unit 20 generates iron (Fe ２＋ Iron chloride is produced from ) and hydrochloric acid (HCl). The valence of iron in iron chloride is divalent. In the carbon dioxide fixation apparatus 100 according to the first embodiment, the hydrochloric acid may be waste acid discharged from a factory, etc. The iron is contained in iron scrap discharged from a factory, etc.

[0038] The iron chloride production section 20 includes a second reaction vessel 21. Hydrochloric acid is introduced into the second reaction vessel 21 using a pump or the like. Iron scrap containing iron is introduced into the second reaction vessel 21. In this way, iron and hydrochloric acid react in the second reaction vessel 21 to produce iron chloride.

[0039] The iron chloride thus generated is conveyed by the conveyable unit 4. The conveyed iron chloride may be in a slurry state or in a solid state. That is, by squeezing and reducing the volume of the product in the second reaction vessel 21, iron chloride in a slurry state or a solid state can be obtained. In this way, it becomes easier to convey the iron chloride.

[0040] <Operation of iron carbonate production unit> The iron carbonate production unit 30 produces iron carbonate (FeCO ３ ). Specifically, the iron carbonate production unit 30 produces iron carbonate from the carbonate produced in the carbonate production unit 10 and the iron chloride produced in the iron chloride production unit 20.

[0041] The iron carbonate production unit 30 includes a third reaction vessel 31. The carbonate produced in the carbonate production unit 10 may be fed into the third reaction vessel 31 from the first reaction vessel 11 by any method. The iron chloride produced in the iron chloride production unit 20 may be fed into the third reaction vessel 31 from the second reaction vessel 21 by any method.

[0042] The third reaction vessel 31 includes a reaction tank 31a and a precipitation tank 31b. In the reaction tank 31a, the carbonate and the iron chloride are mixed using a stirrer or the like. Either the carbonate or the iron chloride to be mixed is in a solution state. Specifically, in the reaction tank 31a, a solution-state carbonate and a slurry-state or solid-state iron chloride may be mixed, a slurry-state or solid-state carbonate and a solution-state iron chloride may be mixed, or a solution-state carbonate and a solution-state iron chloride may be mixed.

[0043] The mixed solution obtained by mixing the carbonate and the iron chloride is fed from the reaction tank 31a into the precipitation tank 31b using a pump or the like. A precipitate of iron carbonate is generated in the mixed solution fed into the precipitation tank 31b. In this way, in the third reaction vessel 31, the carbonate and the iron chloride react to generate iron carbonate. As a result, carbon dioxide is immobilized.

[0044] The iron carbonate produced by the production device 1 may be recovered by draining the mixed solution and drying the iron carbonate. The iron carbonate thus obtained can be used as a member of various products.

[0045] Figure 3 is a schematic side view showing the positional relationship of the reaction vessels in the carbon dioxide fixation apparatus 100. In Figure 3, the portable section 4 is shown with a dotted line.

[0046] The carbonate produced in the carbonate production unit 10 may be fed from the first reaction vessel 11 to the third reaction vessel 31 by gravity. Similarly, the iron chloride produced in the iron chloride production unit 20 may be fed from the second reaction vessel 21 to the third reaction vessel 31 by gravity.

[0047] Specifically, as shown in Figure 3, the first reaction vessel 11 and the second reaction vessel 21 are each positioned higher than the third reaction vessel 31. An opening H1 is provided on the bottom surface of the first reaction vessel 11. In this way, carbonates such as sodium bicarbonate can be removed from the bottom of the first reaction vessel 11. An opening H2 is provided on the bottom surface of the second reaction vessel 21. In this way, iron chloride can be removed from the bottom of the second reaction vessel 21. Openings H3a and H3b are provided on the top surface of the third reaction vessel 31.

[0048] The first reaction vessel 11 is connected to the third reaction vessel 31 by piping. Openings H1 and H3a are connected via piping. Opening H1 is positioned higher than opening H3a. In this configuration, the carbonate produced in the first reaction vessel 11 moves from the first reaction vessel 11 to the third reaction vessel 31 by gravity.

[0049] The second reaction vessel 21 is connected to the third reaction vessel 31 by piping. Openings H2 and H3b are connected via piping. Opening H1 is positioned higher than opening H3b. In this way, the iron chloride produced in the second reaction vessel 21 moves from the second reaction vessel 21 to the third reaction vessel 31 by gravity. Also, as shown in Figure 3, the capacities of the first reaction vessel 11 and the second reaction vessel 21 may be larger than the capacity of the third reaction vessel 31.

[0050] In this way, the reaction products of iron carbonate, namely carbonate and iron chloride, can be fed into the iron carbonate generation unit 30 without using electricity.

[0051] As mentioned above, the carbonate and iron chloride may be introduced into the third reaction vessel 31 by any means, and the first reaction vessel 11 and the second reaction vessel 21 may be placed at the same height as the third reaction vessel 31. In this case, the carbonate produced in the carbonate production unit 10 and the iron chloride produced in the iron chloride production unit 20 may be introduced into the third reaction vessel 31 manually using a hand pump or the like, or they may be introduced using other machinery such as a forklift.

[0052] If the carbonate generation unit 10 and the iron carbonate generation unit 30 are connected to each other via piping, the carbonate may be moved from the first reaction vessel 11 to the third reaction vessel 31 by convection by utilizing the radiant heat of the surrounding equipment. Alternatively, if the iron chloride generation unit 20 and the iron carbonate generation unit 30 are connected to each other via piping, the iron chloride may be moved from the second reaction vessel 21 to the third reaction vessel 31 by convection by utilizing the radiant heat of the surrounding equipment.

[0053] During the movement of the carbon dioxide fixation device 100, the carbonate generation unit 10, the iron chloride generation unit 20, and the iron carbonate generation unit 30 do not need to be connected to each other via piping. This reduces the impact of vibrations of the portable unit 4 on the generation device 1.

[0054] Furthermore, a guard (not shown), such as a liquid-proof pan, may be provided on the lower surface of each of the first reaction vessel 11, the second reaction vessel 21, and the third reaction vessel 31 to prevent leakage of the product. Each of the first reaction vessel 11, the second reaction vessel 21, and the third reaction vessel 31 may be partially open to suppress residual pressure. Stoppers (not shown) may be provided in each of the carbonate generation section 10, the iron chloride generation section 20, and the iron carbonate generation section 30 to prevent the generation device 1 from moving while the carbon dioxide fixation device 100 is being moved.

[0055] The portable section 4 may have sufficient height to ensure a adequate transport path for the liquid, such as a solution, that is placed inside the generating device 1.

[0056] (Second Embodiment) Next, the configuration of the carbon dioxide fixation apparatus 100 according to the second embodiment will be described. The carbon dioxide fixation apparatus 100 according to the second embodiment differs from the carbon dioxide fixation apparatus 100 according to the first embodiment mainly in that the generating apparatus 1 includes the carbonate generating section 10, among the carbonate generating section 10, iron chloride generating section 20, and iron carbonate generating section 30, but does not include the iron chloride generating section 20 and iron carbonate generating section 30. The other configurations are substantially the same as those of the carbon dioxide fixation apparatus 100 according to the first embodiment. The differences from the carbon dioxide fixation apparatus 100 according to the first embodiment will be described below.

[0057] Figure 4 is a schematic side view showing the configuration of the carbon dioxide fixation apparatus 100 according to the second embodiment. The generating apparatus 1 only needs to include at least one of the carbonate generating unit 10, the iron chloride generating unit 20, and the iron carbonate generating unit 30. As shown in Figure 4, in the carbon dioxide fixation apparatus 100 according to the second embodiment, the generating apparatus 1 includes the carbonate generating unit 10 but does not include the iron chloride generating unit 20 and the iron carbonate generating unit 30. In other words, the carbonate generating unit 10 is arranged on the mounting unit 41 so that the carbonate generating unit 10 is transported.

[0058] Depending on the user of the carbon dioxide fixation device 100, the waste discharged from, for example, factories (alkaline solutions, waste acids, iron scraps) will differ. In such cases, the portable unit 4 may support at least one of the carbonate generation unit 10, the iron chloride generation unit 20, and the iron carbonate generation unit 30, according to the user's application. In this way, specific waste can be temporarily stored in the generation device 1. Furthermore, if necessary, the product can be generated in advance by operating the generation device 1 using the carbon dioxide fixation device 100. As a result, the pre-generated product can be easily transported using the carbon dioxide fixation device 100.

[0059] In the carbon dioxide fixation apparatus 100 according to the second embodiment, a configuration was described in which the carbonate generation unit 10 is placed on the mounting unit 41 so that the carbonate generation unit 10 is transported. However, the carbonate generation unit 10 and the iron carbonate generation unit 30 may not be placed on the mounting unit 41, and the iron chloride generation unit 20 may be placed on the mounting unit 41 so that the iron chloride generation unit 20 is transported. The carbonate generation unit 10 and the iron chloride generation unit 20 may not be placed on the mounting unit 41, and the iron carbonate generation unit 30 may be placed on the mounting unit 41 so that the iron carbonate generation unit 30 is transported. Furthermore, the generation apparatus 1 may include two of the carbonate generation unit 10, the iron chloride generation unit 20, and the iron carbonate generation unit 30.

[0060] (Third Embodiment) Next, the configuration of the carbon dioxide fixation device 100 according to the third embodiment will be described. The carbon dioxide fixation device 100 according to the third embodiment differs from the carbon dioxide fixation device 100 according to the first embodiment mainly in that the portable unit 4 consists of a self-propelled vehicle, and the other configurations are substantially the same as those of the carbon dioxide fixation device 100 according to the first embodiment. The differences from the carbon dioxide fixation device 100 according to the first embodiment will be described below.

[0061] Figure 5 is a schematic side view showing the configuration of a carbon dioxide fixation device 100 according to the third embodiment. As shown in Figure 5, the carbon dioxide fixation device 100 is not towed by a self-propelled vehicle 5, and the portable unit 4 may be a self-propelled vehicle. In other words, the portable unit 4 may be composed of a mounting unit 41, a housing unit 43, and a controllable control unit 45 integrated together. In this way, the driver can operate and move the carbon dioxide fixation device 100.

[0062] The portable unit 4 may be operated remotely. In this way, the carbon dioxide fixation device 100 can be moved even without an operator. The generating device 1 may also be operated remotely.

[0063] Next, the effects and advantages of the carbon dioxide fixation device 100 according to this embodiment will be explained. Conventionally, carbon dioxide fixation generators 1 are large and installed in specific locations. However, installing the generator 1 requires wiring and piping work, which incurs installation costs. Also, the waste discharged from, for example, factories differs depending on the user. Therefore, it is not possible to carry out all the necessary processing to fix carbon dioxide.

[0064] The carbon dioxide fixation apparatus 100 according to this disclosure comprises a generating apparatus 1 and a portable unit 4. The generating apparatus 1 includes at least one of a carbonate generating unit 10, an iron chloride generating unit 20, and an iron carbonate generating unit 30. The portable unit 4 supports the generating apparatus 1 so that it can be transported. This allows the generating apparatus 1 to be moved to a desired location according to the user's needs and operated temporarily. Furthermore, if necessary, the product can be generated in advance by operating the generating apparatus 1 using the carbon dioxide fixation apparatus 100. As a result, the pre-generated product can be easily transported using the carbon dioxide fixation apparatus 100.

[0065] According to the carbon dioxide fixation apparatus 100 described above, the carbonate and iron chloride may be in slurry or solid form. This makes it easier to transport the carbonate and iron chloride.

[0066] According to the carbon dioxide fixation apparatus 100 described above, the generating apparatus 1 includes a carbonate generating section 10, an iron chloride generating section 20, and an iron carbonate generating section 30. As a result, the user of the carbon dioxide fixation apparatus 100 can carry out all the processing necessary to fix carbon dioxide.

[0067] According to the carbon dioxide fixation apparatus 100 described above, the carbonate generation section 10 includes a first reaction vessel 11 where carbonate is produced. The iron chloride generation section 20 includes a second reaction vessel 21 where iron chloride is produced. The iron carbonate generation section 30 includes a third reaction vessel 31 where iron carbonate is produced. The first reaction vessel 11 and the second reaction vessel 21 are positioned higher than the third reaction vessel 31. The carbonate moves from the first reaction vessel 11 to the third reaction vessel 31 by gravity. The iron chloride moves from the second reaction vessel 21 to the third reaction vessel 31 by gravity. As a result, carbonate and iron chloride, which are the reaction products of iron carbonate, can be fed into the iron carbonate generation section 30 without using electricity.

[0068] It should be understood that at least one configuration or feature described in each embodiment and example can be combined with other embodiments and examples, or modified in various ways.

[0069] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of this disclosure is indicated by the claims rather than the embodiments described above, and all modifications within the scope are intended to be in the sense of equivalents of the claims.

[0070] 1 Production device, 4 Portable unit, 5 Self-propelled vehicle, 6 Generator, 10 Carbonate production unit, 11 First reaction vessel, 20 Iron chloride production unit, 21 Second reaction vessel, 30 Iron carbonate production unit, 31 Third reaction vessel, 31a Reaction tank, 31b Sedimentation tank, 41 Mounting unit, 42 Wheels, 42F Front wheel unit, 42R Rear wheel unit, 43 Housing unit, 44 Support unit, 45 Control unit, 51 Connection unit, 100 Carbon dioxide fixation device, H1, H2, H3a, H3b Openings.

Claims

1. A carbon dioxide fixation apparatus comprising: a generating apparatus including at least one of a carbonate generating section, an iron chloride generating section, and an iron carbonate generating section; and a portable section that supports the generating apparatus so as to be transportable.

2. The carbon dioxide fixation apparatus according to claim 1, wherein the carbonate generating unit generates a carbonate from carbon dioxide and an alkaline solution containing sodium hydroxide.

3. The carbon dioxide fixation apparatus according to claim 2, wherein the carbonate is in slurry or solid form.

4. The carbon dioxide fixation apparatus according to any one of claims 1 to 3, wherein the iron chloride production unit produces iron chloride from hydrochloric acid and iron.

5. The carbon dioxide fixation apparatus according to claim 4, wherein the iron chloride is in the form of a slurry or a solid.

6. The carbon dioxide fixation apparatus according to any one of claims 1 to 5, wherein the iron carbonate generating unit generates iron carbonate from the carbonate generated in the carbonate generating unit and the iron chloride generated in the iron chloride generating unit.

7. The carbon dioxide fixation apparatus according to any one of claims 1 to 6, wherein the generating apparatus includes the carbonate generating unit, the iron chloride generating unit, and the iron carbonate generating unit.

8. The carbon dioxide fixation apparatus according to claim 7, wherein the carbonate production section includes a first reaction vessel in which carbonate is produced, the iron chloride production section includes a second reaction vessel in which iron chloride is produced, the iron carbonate production section includes a third reaction vessel in which iron carbonate is produced, the first and second reaction vessels are positioned higher than the third reaction vessel, the carbonate moves from the first reaction vessel to the third reaction vessel by gravity, and the iron chloride moves from the second reaction vessel to the third reaction vessel by gravity.

9. The carbon dioxide fixation apparatus according to any one of claims 1 to 8, comprising a self-propelled vehicle connected to the portable unit and for towing the portable unit.

10. The carbon dioxide fixation apparatus according to any one of claims 1 to 9, wherein the portable unit comprises a self-propelled vehicle.

11. The carbon dioxide fixation apparatus according to any one of claims 1 to 10, wherein the portable part includes a container for housing the generating apparatus and a trolley for supporting the container.

12. The portable unit is operated remotely, the carbon dioxide fixation apparatus according to any one of claims 1 to 11.

13. The carbon dioxide fixation apparatus according to any one of claims 1 to 12, comprising a generator supported by the portable part and supplying power to the generating apparatus.

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