Carbonation apparatus

Abstract

To provide a carbonation apparatus capable of releasing only air inside a container to the atmosphere even when carbon dioxide is supplied into the container.SOLUTION: A carbonation apparatus is configured to carbonate a calcium-containing material by supplying carbon dioxide to the calcium-containing material in a container, the apparatus comprising a supply mechanism for supplying the carbon dioxide into the container, wherein the supply mechanism is configured to supply the carbon dioxide to a predetermined position inside the container at a predetermined wind speed, the predetermined position being a lower portion in a gas phase part inside the container, the container having an opening mechanism at an upper portion thereof, and only air inside the container being releasable to the atmosphere through the opening mechanism by supplying carbon dioxide to the lower portion at the predetermined wind speed.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a carbonator. [Background technology]

[0002] As a measure against global warming, a technology has been proposed that reduces or utilizes atmospheric carbon dioxide by fixing carbon dioxide in calcium-containing materials such as concrete and cement. Patent Document 1 (Fig. 2) discloses a curing device for hardened bodies, which is equipped with a container for storing the hardened bodies, and the container is filled with a modified treatment agent that improves the properties of the hardened bodies. In addition, an exhaust gas pipe is connected to the container, and the mixed gas inside the container is discharged. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-143531 Summary of the Invention [Problem to be solved by the invention]

[0004] The technology in Patent Document 1 (Figure 2) contributes to reducing and utilizing carbon dioxide by supplying carbon dioxide from the top of the container and carbonating the hardened material, but when carbon dioxide is supplied from the top of the container, the carbon dioxide mixes with the air and is released into the atmosphere, and there are cases where it is not possible to release only the air inside the container into the atmosphere.

[0005] The present invention has been made in view of the above circumstances, and aims to provide a carbonation device that can release only the air in the container into the atmosphere even when carbon dioxide is supplied into the container. [Means for solving the problem]

[0006] According to the present invention, the following inventions are provided. [1] A carbonation device configured to be able to carbonate a calcium-containing material in a container by supplying carbon dioxide to the calcium-containing material, the device comprising: a supply mechanism that supplies the carbon dioxide into the container; the supply mechanism is configured to be able to supply the carbon dioxide to a predetermined position in the container at a predetermined wind speed, the predetermined position being a lower part of a gas phase portion in the container; the container has an opening mechanism at an upper part of the container; and by supplying carbon dioxide to the lower part at the predetermined wind speed, only the air in the container can be released into the atmosphere through the opening mechanism. [2] The device according to [1], wherein the predetermined wind speed is greater than 0 and equal to or less than 5 (m / s), thereby suppressing turbulence of the gas phase within the container. [3] The device described in [1], wherein the supply mechanism is equipped with an air volume adjustment mechanism, and the opening mechanism is equipped with a concentration sensor capable of monitoring the carbon dioxide concentration of the opening mechanism, and is configured to stop the supply of carbon dioxide or throttle the air volume adjustment mechanism when the concentration exceeds a predetermined concentration. [4] The carbonation device according to [1], wherein the container is provided with a blade mechanism capable of kneading the calcium-containing material, and the blade mechanism is configured to be rotatable relative to the container, thereby enabling the calcium-containing material to be uniformly carbonated. [5] A carbonation apparatus according to [4], wherein the supply mechanism includes piping, and the piping is configured to be retractable from the predetermined position during kneading, thereby enabling kneading without interfering with the blade mechanism or the calcium-containing material. [6] A carbonation device according to [5], wherein the piping is configured to be movable in the vertical direction. [7] A carbonation device according to [5], wherein the piping is configured to be rotatable around the top of the container. [8] The carbonation apparatus according to [1], wherein the calcium-containing material is concrete, cement, waste concrete, coal ash, incineration ash, gypsum, quicklime, slaked lime, or a mixture of two or more of these. [Effects of the Invention]

[0007] In the carbonation device of the present invention, carbon dioxide is supplied from a predetermined position in the container, which pushes up the air inside the container from below, making it easier to release only the pushed-up air into the atmosphere from the opening at the top of the container. [Brief explanation of the drawings]

[0008] [Figure 1] Schematic diagram showing a conventional carbonation device [Figure 2] Figure showing the simulation results of the change over time in carbon dioxide and air in the container depending on the installation position of the supply mechanism [Figure 3] Schematic diagram showing a carbonation device according to one embodiment of the present invention. [Figure 4] Schematic diagram of a carbonation device showing modified example 2 of the lid in one embodiment of the present invention. [Figure 5] FIG. 5A is a schematic diagram showing an arrangement state of a supply mechanism according to Example 1, and FIG. 5B is a schematic diagram showing an arrangement state in which the supply mechanism of FIG. 5A is retracted. [Figure 6] 6A is a schematic diagram showing an arrangement state of a supply mechanism according to Example 2, and FIG. 6B is a schematic diagram showing an arrangement state in which the supply mechanism of FIG. 6A is retracted. [Figure 7] Schematic diagram of the test equipment used to test the concentration and time transition of carbon dioxide supplied into a container [Figure 8] The results of a test performed using the test equipment shown in Figure 7 are shown in Figure 8A, which shows the relationship between time and carbon dioxide concentration when the carbon dioxide supply speed was set to 2.3 m / sec, and Figure 8B, which shows the relationship between time and carbon dioxide concentration when the carbon dioxide supply speed was set to 6.6 m / sec. [Figure 9] 8 shows the relationship between the wind speed when air is supplied into the container and the carbon dioxide concentration in the container, using the test device shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described. Various features shown in the embodiments can be combined with each other. In this specification, "top" and "bottom" refer to positions when the drawing is viewed from the front. For example, the terms "upper part" and "upper edge" refer to the "upper part" and "upper edge" when the drawing is viewed from the front.

[0010] Before describing the present invention, the circumstances that led to the invention will be explained.

[0011] FIG. 1 is a diagram showing a schematic diagram of a conventional carbonation device 200. As shown in FIG. 1, a conventional carbonation device 200 is made up of a container 110, a supply mechanism 120, an opening mechanism 130, and the like.

[0012] A calcium-containing material z is placed on the bottom 111 of the container 110. Here, the container 110 has a non-sealed structure due to the opening mechanism 130, and is configured so that air, carbon dioxide, etc. inside the container 110 can be released into the atmospheric environment AT, or air can enter the container 110 from the atmospheric environment AT.

[0013] Carbon dioxide is supplied into the container 110 by a supply mechanism 120 .

[0014] Since carbon dioxide is heavier than air, the supply mechanism 120 has a high supply position and moves carbon dioxide from top to bottom.

[0015] Normally, before carbon dioxide is supplied, the container 110 is filled with air. To increase the carbon dioxide concentration in the container 110 from this state, carbon dioxide must be supplied to reach a predetermined concentration, and air equivalent to the volume of the supplied carbon dioxide must be released from the container 110.

[0016] However, if carbon dioxide is supplied into the container 110 from a high position, the carbon dioxide may mix with the air in the container 110, causing the carbon dioxide that was supplied for utilization to be released outside the container 110. This is undesirable as the ultimate goal is to reduce or utilize carbon dioxide in the atmosphere.

[0017] Therefore, when carbon dioxide is supplied into the container 110, it is necessary to prevent the supplied carbon dioxide from being released to the outside as much as possible.

[0018] Therefore, the inventors of the present application focused on the position at which carbon dioxide is supplied to container 110. That is, they thought that if carbon dioxide supply mechanism 120 that supplies carbon dioxide is supplied from below, rather than from above, carbon dioxide, being heavier than air, would remain at the bottom and push up the air, allowing only the air to be released into the atmosphere.

[0019] Based on the above findings, the inventors conducted various studies and discovered a configuration in which carbon dioxide is supplied to the container 110 from below, thereby allowing only the existing air to be released first, which led to the invention of the present invention.

[0020] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 2 shows the results of a simulation of the change over time in carbon dioxide and air in the container depending on the installation position of the supply mechanism.

[0021] <Simulation> First, based on the above findings, the inventors of the present application performed a simulation over time to see how the carbon dioxide supplied into the container 10 and the existing air behave depending on the carbon dioxide supply position.

[0022] As shown in Figure 2, the position of the supply mechanism for supplying CO2 into the container was set to two patterns: at the top of the container (left side) and at the bottom of the container (right side). Next, specific conditions for the simulation will be described.

[0023] <Simulation conditions> CO2 gas density: 1.97kg / m3 CO2 supply units: 4 CO2 flow rate from each CO2 supply mechanism: 50L / min (1.64g / s) Time 0s: The container is filled with air only Gas is released into the atmosphere from the opening mechanism at a flow rate of 200 L / min -Condition: No CO2 is contained in the air CO2 supply mechanism diameter: φ20mm Opening mechanism diameter: φ40mm

[0024] Figure 2 shows that when CO2 is supplied from the bottom of the container, it pushes up the air from below, and the above findings were verified by simulation.

[0025] FIG. 3 is a diagram showing a schematic diagram of a carbonation device 100 according to one embodiment of the present invention.

[0026] As shown in FIG. 3, a carbonation device 100 configured to be able to carbonate a calcium-containing material z in a container 10 by supplying carbon dioxide to the calcium-containing material z includes a supply mechanism 20 that supplies carbon dioxide into the container 10. The supply mechanism 20 is not limited to one, and may be configured as a plurality of mechanisms, which can be appropriately adopted depending on the conditions for supplying carbon dioxide to the container 10.

[0027] The supply mechanism 20 is configured to be able to supply carbon dioxide at a predetermined wind speed to a predetermined position in the container 10. Here, the predetermined position refers to the lower part 11 in the gas phase part in the container 10. Specifically, if the calcium-containing material z is present in the container 10, the lower part 11 refers to the lower part in the gas phase part excluding the calcium-containing material z, and if the calcium-containing material z is not present, the bottom of the container 10 corresponds to the lower part.

[0028] 3, the supply mechanism 20 includes a pipe 20a, which is attached to the side surface of the container 10. In addition, in the height direction, the pipe 20a is attached near the lower portion 11 in the gas phase portion inside the container 10.

[0029] The container 10 has an opening mechanism 30 on the top 12 of the container 10 . As a result, carbonation device 100 can release only the air inside container 10 into the atmosphere through opening mechanism 30 by supplying carbon dioxide to lower portion 11 at a predetermined wind speed.

[0030] The predetermined wind speed, which will be described later, is preferably greater than 0 and equal to or less than 5 (m / s). This makes it possible to suppress turbulence in the gas phase within the container 10, and to push up the air while suppressing mixing of the air and carbon dioxide.

[0031] The supply mechanism 20 is preferably equipped with an air volume adjustment mechanism 50 that can adjust the volume of carbon dioxide air that is supplied. The opening mechanism 30 is preferably equipped with a concentration sensor 40 that can monitor the carbon dioxide concentration in the vicinity of the opening mechanism 30 .

[0032] This allows the configuration to be such that, when the concentration detected by the concentration sensor 40 exceeds a predetermined concentration, the supply of carbon dioxide is stopped or the air volume is reduced by the air volume adjustment mechanism 50. Here, the predetermined concentration is preferably greater than 0 and equal to or less than 5%, which allows carbon dioxide to be released into the atmosphere.

[0033] The container 10 preferably includes a blade mechanism 60 capable of kneading the calcium-containing material z. The blade mechanism 60 is configured to be rotatable relative to the container 10.

[0034] This allows the calcium-containing material z to be uniformly carbonated. A spiral blade, a stirring blade, or the like can be appropriately adopted as the blade mechanism 60. Furthermore, the blade mechanism 60 is not limited to one, and may be configured with a plurality of blade mechanisms. Moreover, being relatively rotatable means that the container 10 is fixed (immobile) and the blade mechanism 60 can be configured to be rotatable on its own axis, so that it can rotate relatively to the container 10.

[0035] The calcium-containing material z is a material containing calcium capable of absorbing carbon dioxide. Examples of the calcium-containing material z include concrete, cement, waste concrete, coal ash, incineration ash, gypsum, quicklime, slaked lime, etc., or a mixture of two or more of these.

[0036] The container 10 preferably comprises a container body 10a and a lid 10b. That is, the lower portion 11 of the container 10 corresponds to the bottom of the container body 10a, and the upper portion 12 of the container 10 corresponds to the upper portion of the lid 10b. The calcium-containing material z is contained in the container body 10a. The container body 10a has an open top, and the lid 10b is attached to the container body 10a so as to close the opening. The opening mechanism 30 is provided on the top of the lid 10b.

[0037] This allows air, carbon dioxide, etc. within the container 10 to be released into the atmospheric environment AT, or allows air to enter the container 10 from the atmospheric environment AT.

[0038] The lid portion 10b is not limited to this, and may be configured as a modified example 2 of the lid portion 10b1 shown in Fig. 4. The lid portion 10b1 of this modified example 2 differs in shape and size from the lid portion 10b of the first embodiment of the present invention. Specifically, the lid portion 10b1 is trapezoidal in front view, and an opening mechanism 30 is provided on the upper side, i.e., the upper portion 12a.

[0039] This makes it easier to guide air toward the opening mechanism 30. The horizontal position of the upper side of the lid portion 10b1 is not particularly limited as long as it is a mode in which the upper portion of the lid portion 10b1 is narrowed.

[0040] Next, Example 1 of a supply mechanism different from supply mechanism 20 in the first embodiment of the present invention will be described with reference to Fig. 5. Supply mechanism 20 in the first embodiment of the present invention has piping 20a attached to the side of container 10 so as to be able to supply carbon dioxide to a predetermined position within container 10, whereas supply mechanism 21 in Example 1 is different in that long piping 21a extends from the top of the container to a predetermined position within container 10.

[0041] Example 1 Fig. 5A is a schematic diagram showing the arrangement of the supply mechanism 21 according to Example 1, and Fig. 5B is a schematic diagram showing the arrangement of the supply mechanism 21 in Fig. 5A in which the supply mechanism 21 is retracted. In other words, Fig. 5A shows the arrangement of the supply mechanism 21 when carbon dioxide is being supplied, and Fig. 5B shows the arrangement of the supply mechanism 21 in which the supply mechanism 21 is retracted while the blade mechanism 60 is being driven (during carbonation). As an example, a two-shaft mixer is used as the blade mechanism 60, but the blade mechanism 60 is not limited to this and can be used as appropriate.

[0042] The supply mechanism 21 of the first embodiment includes a long pipe 21a, and the pipe 21a is configured to be able to enter the container 10 from the top of the container 10 or the top of the lid 10b to a predetermined position inside the container 10.

[0043] On the other hand, as shown in FIG. 5B, this pipe 21a is configured so as to be able to retreat from a predetermined position during kneading.

[0044] This allows the pipe 21a to knead without interfering with the blade mechanism 60 or the calcium-containing material z during kneading.

[0045] This also makes it possible to prevent the pipe 21a from being clogged or malfunctioning due to the calcium-containing material z. Although the supply mechanism 21 is provided on the left and right sides, this is not limiting, and multiple supply mechanisms 21 may be provided from the front to the back when viewed from the front of the drawing, or there may be only one supply mechanism.

[0046] Here, as an example of a configuration for enabling the retraction of the pipe 21a, a driving means for moving the pipe 21a in the vertical direction is provided on the upstream side of the pipe 21a (not shown), and the pipe 21a can be moved in the vertical direction by driving the driving means.

[0047] Next, Example 2 of a supply mechanism different from supply mechanism 20 in the first embodiment of the present invention will be described with reference to Fig. 6. Supply mechanism 20 in the first embodiment of the present invention has piping 20a attached to the side of container 10 so as to be able to supply carbon dioxide to a predetermined position within container 10, whereas supply mechanism 22 in Example 2 differs in that long piping 22a extends from the edge of the upper part of the container to a predetermined position within container 10.

[0048] <Example 2> Fig. 6A is a schematic diagram showing the arrangement of the supply mechanism 22 according to Example 2, and Fig. 6B is a schematic diagram showing the arrangement of the supply mechanism 22 in Fig. 6A in which the supply mechanism 22 is retracted. In other words, Fig. 6A shows the arrangement of the supply mechanism 22 when carbon dioxide is being supplied, and Fig. 6B shows the arrangement of the supply mechanism 22 in which the supply mechanism 22 is retracted while the blade mechanism 60 is being driven (during carbonation). As an example, a two-shaft mixer is used as the blade mechanism 60, but the blade mechanism 60 is not limited to this and can be used as appropriate.

[0049] The supply mechanism 22 of the second embodiment includes a long pipe 22a, which is configured to be able to enter the upper portion of the container 10 or the upper portion and edge of the lid portion 10b to a predetermined position within the container 10.

[0050] On the other hand, this piping 22a is configured to be able to retreat from a predetermined position during kneading, as shown in Fig. 6B. During kneading, the supply mechanism 22 is configured to be able to retreat by rotating around a fulcrum c near a corner in the upper part of the container, as shown in Fig. 6B.

[0051] This allows the pipe 22a to knead without interfering with the blade mechanism 60 or the calcium-containing material z.

[0052] This also makes it possible to prevent the pipe 22a from being clogged or malfunctioning due to the calcium-containing material z. Although the supply mechanisms 22 are provided facing each other on the left and right, this is not limiting, and multiple supply mechanisms 22 may be provided from the front to the back when viewed from the front of the drawing, or there may be only one supply mechanism.

[0053] Next, the change in carbon dioxide concentration in the container with respect to the supply time when carbon dioxide was supplied from the bottom was examined.

[0054] <Test example> FIG. 7 is a schematic diagram of a test device 300 for testing the concentration and time transition of carbon dioxide supplied into a container.

[0055] Using this test device 300, a test was conducted to see how the carbon dioxide in the container changes over time when a predetermined amount of carbon dioxide was supplied at a predetermined wind speed.

[0056] FIG. 8 shows the results of a test performed using the test apparatus 300 of FIG. 7, where FIG. 8A is a graph showing the relationship between time and carbon dioxide concentration when the carbon dioxide supply speed was set to 2.3 m / sec, and FIG. 8B is a graph showing the relationship between time and carbon dioxide concentration when the carbon dioxide supply speed was set to 6.6 m / sec.

[0057] As shown in FIG. 7, the testing device 300 is composed of a container 10, a supply mechanism 20, an opening mechanism 30, a concentration sensor, and the like.

[0058] Three concentration sensors are attached to the testing device 300: concentration sensor 40d, which can monitor the concentration near the lower layer of the container 10; concentration sensor 40m, which can monitor the concentration near the middle layer of the container 10; and concentration sensor 40u, which can monitor the concentration near the upper layer of the container 10.

[0059] Specifically, the concentration sensor 40d is attached to the container body 10a, the concentration sensor 40m is attached to the lid portion 10b, and the concentration sensor 40u is attached to the opening mechanism 30. As shown in FIG. 7, two supply mechanisms 20 are provided, and two not shown are provided at the back when the drawing is viewed from the front, so that a total of four supply mechanisms 20 are used to supply carbon dioxide.

[0060] In this test example, the pipe diameter of the pipe 20a of each supply mechanism 20 was changed to supply carbon dioxide under two different wind speed conditions.

[0061] Specifically, as shown in Figure 8A, carbon dioxide was supplied to the container 10 at a rate of 160 L / min at a wind speed of 2.3 m / sec, and as shown in Figure 8B, carbon dioxide was supplied to the container 10 at a rate of 160 L / min at a wind speed of 6.6 m / sec. Under these conditions, the carbon dioxide concentrations in the lower, middle, and upper layers were measured at each elapsed time from the start of the carbon dioxide supply.

[0062] As can be seen from the test results, when carbon dioxide is supplied to the lower layer, the carbon dioxide concentration increases from the lower layer, and then rises in the middle layer, but it can be confirmed that carbon dioxide does not come out of the opening mechanism 30 for a while after the start of supply.

[0063] Furthermore, compared to the test in Figure 8A where the wind speed was 2.3 m / s, the test in Figure 8B where the wind speed was 6.6 m / s took a shorter time for carbon dioxide to be detected by the opening mechanism 30, and it was found that the carbon dioxide concentration in the lower and middle layers at the moment of detection by the opening mechanism 30 was lower.

[0064] From the above results, it can be seen that when carbon dioxide is supplied from the lower part of the space within container 10, it accumulates from the bottom of the space within container 10, and as a result, the air within container 10 is efficiently pushed out from opening mechanism 30 located at the top of container 10, thereby increasing the carbon dioxide concentration within container 10. It can also be seen that even if the amount of carbon dioxide supplied is the same, the wind speed at the supply port when supplying affects the carbon dioxide concentration within the container.

[0065] Next, we conducted an experiment to examine the change in carbon dioxide concentration when air and carbon dioxide were mixed uniformly in a container at different wind speeds.

[0066] <Experimental Example> FIG. 9 is a graph showing the relationship between the wind speed when air is supplied into the container and the carbon dioxide concentration inside the container, using the test device 300 of FIG. In this experimental example, the carbon dioxide concentration inside the container was determined when carbon dioxide was supplied into the container under the following four wind speed conditions. Condition (1): Wind speed 2.3 m / s, Condition (2): Wind speed 4.1 m / s, Condition (3): Wind speed 6.6 m / s, Condition (4): Wind speed 8.5 m / s In this experimental example, the wind speed is determined by changing the pipe diameter of the pipe 20a, but the invention is not limited to this.

[0067] Specifically, using four supply mechanisms 20, carbon dioxide was supplied into the container 10 at a supply rate of 160 L / min at a wind speed under condition (1), and the carbon dioxide concentration throughout the container was determined at the moment when the concentration sensor 40u attached to the opening mechanism 30 detected carbon dioxide. Similarly, conditions (2), (3), and (4) were implemented. The carbon dioxide concentration was determined by mixing the air and carbon dioxide uniformly in the container.

[0068] As shown in Figure 9, this result confirms that in order to achieve a carbon dioxide concentration of 50% or more, which is considered preferable for carbonation of calcium-containing materials without releasing carbon dioxide into the atmosphere, it is best to set the wind speed of the supply mechanism 20 to 5 m / s or less. On the other hand, if the wind speed is increased, turbulence will occur inside the container, making it difficult to push up only the air, and the air and carbon dioxide will mix, which will speed up the detection time of the concentration sensor 40. Taking this into consideration, a wind speed of 5 m / s or less is preferable. Furthermore, the lower the wind speed, the less likely it is that turbulence will occur, so the wind speed should be faster than 0.

[0069] Finally, while the embodiments and modifications of the present invention have been described, they are presented by way of example only and are not intended to limit the scope of the invention. The novel embodiments may be embodied in various other forms, and various omissions, substitutions, and modifications may be made without departing from the spirit of the invention. Such embodiments and modifications are intended to be included within the scope and spirit of the invention, as well as within the scope of the inventions and their equivalents as defined in the accompanying claims. [Explanation of symbols]

[0070] 10: container, 10a: container body, 10b: lid, 20: supply mechanism, 20a: piping, 30: opening mechanism, 40: concentration sensor, 50: air volume adjustment mechanism, 60: blade mechanism, 100: carbonation device, z: calcium-containing material

Claims

1. 1. A carbonation device configured to be able to carbonate a calcium-containing material in a container by supplying carbon dioxide to the calcium-containing material, a supply mechanism for supplying the carbon dioxide into the container, the supply mechanism is configured to be able to supply the carbon dioxide to a predetermined position in the container at a predetermined wind speed, the predetermined position is a lower portion of a gas phase portion in the container, The container has an opening mechanism at an upper portion of the container, An apparatus capable of releasing only the air within the container into the atmosphere through the opening mechanism by supplying carbon dioxide to the lower portion at the predetermined wind speed.

2. 2. The carbonation device of claim 1, The predetermined wind speed is greater than 0 and less than or equal to 5 (m / s), This allows the device to suppress turbulence in the gas phase within the container.

3. 2. The carbonation device of claim 1, The supply mechanism is provided with an air volume adjustment mechanism, the opening mechanism is provided with a concentration sensor capable of monitoring the carbon dioxide concentration of the opening mechanism; The device is configured to stop the supply of carbon dioxide or throttle the air volume adjustment mechanism when a predetermined concentration is exceeded.

4. 2. The carbonation device of claim 1, the container is provided with a blade mechanism capable of kneading the calcium-containing material, The blade mechanism is configured to be rotatable relative to the container, This allows the calcium-containing material to be uniformly carbonated.

5. 5. The carbonation device according to claim 4, the supply mechanism includes piping; the piping is configured to be retractable from the predetermined position during kneading, This allows the piping to be kneaded without interfering with the blade mechanism or the calcium-containing material.

6. 6. The carbonation device according to claim 5, The device, wherein the piping is configured to be movable in the vertical direction.

7. 6. The carbonation device according to claim 5, The device, wherein the piping is configured to be rotatable around the top of the container.

8. 2. The carbonation device of claim 1, The calcium-containing material is concrete, cement, waste concrete, coal ash, incineration ash, gypsum, quicklime, slaked lime, or a mixture of two or more of these.

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