Method and system for manufacturing laying components

Abstract

To provide a method and system for manufacturing laying components that can more effectively reduce carbon dioxide emissions. [Solution] The method for manufacturing the laying member includes fixing at least carbon dioxide into a cementitious hardened body to form a carbonated substance, and filling a container with the carbonated substance.

Description

Technical Field

[0001] The present invention relates to a method and a system for manufacturing a laying member.

Background Art

[0002] In recent years, reinforcement of soft ground has been required from the viewpoint of earthquake countermeasures and the like.

[0003] In addition, reduction of carbon dioxide emissions is socially required, and techniques using hardened cementitious materials have been proposed in response to this social requirement. For example, Patent Document 1 describes a technique for immobilizing carbon dioxide in a powdery granular hardened cementitious material.

Prior Art Literature

Patent Literature

[0004]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0005] The present invention has been made in view of the above circumstances. Accordingly, an object of the present invention is to provide a method and a system for manufacturing a laying member that can more effectively suppress carbon dioxide emissions.

Means for Solving the Problem

[0006] The above object of the present invention is achieved by the following.

[0007] (1) A method for manufacturing a laying member, comprising: immobilizing at least carbon dioxide in a hardened cementitious material to form a carbonated substance; and filling the carbonated substance into a container.

[0008] (2) A method for manufacturing a laying member, comprising filling a container with a cementitious hardened material and fixing at least carbon dioxide in the cementitious hardened material filled in the container to form a carbonated substance.

[0009] (3) The method for manufacturing a laying member according to (1) or (2) above, wherein the cementitious hardened body is in the form of powder and granules, and the cementitious hardened body has a particle size of RC40 to RC10.

[0010] (4) A method for manufacturing a laying member according to (1) or (2) above, wherein carbon dioxide and sulfur oxides are immobilized in the cementitious hardened body by forming the carbonicating substance.

[0011] (5) A method for manufacturing a laying member according to (1) or (2) above, wherein a sandbag is used as the containment body.

[0012] (6) The method for manufacturing a laying member according to (1) or (2) above, further comprising stacking and storing a plurality of the containers filled with the carbonated substance.

[0013] (7) The method for manufacturing a laying member according to (6) above, further comprising shipping the lowest of the stacked containers.

[0014] (8) A manufacturing system for laying members comprising: an immobilization device for fixing at least carbon dioxide to a cementitious hardened body to form a carbonated substance; and a filling device for filling a container with at least one of the cementitious hardened body and the carbonated substance. [Effects of the Invention]

[0015] In the method and system for manufacturing a laying member according to the present invention, carbon dioxide is immobilized on a hardened cementitious material, and a container is filled with the hardened cementitious material or a carbonated material. Thereby, a container filled with the carbonated material is obtained. The container filled with the carbonated material can be used as a laying member for soft ground or the like. As described above, in addition to immobilizing carbon dioxide on the hardened cementitious material, the carbonated material after immobilization is effectively utilized as a laying member, so it is possible to more effectively suppress carbon dioxide emissions. [Brief Description of the Drawings]

[0016] [Figure 1] It is a schematic diagram showing an example of the configuration of the manufacturing system according to the first embodiment. [Figure 2] It is a side view schematically showing an example of the configuration of the laying member manufacturing facility shown in FIG. 1. [Figure 3] It is a schematic diagram for explaining the filling apparatus shown in FIG. 2. [Figure 4] It is a schematic diagram for explaining the state of the storage unit shown in FIG. 2. [Figure 5] It is a flowchart showing an example of the operation of the manufacturing system shown in FIG. 1. [Figure 6] It is a side view showing the configuration of a main part of the manufacturing system according to Modification 1. [Figure 7] It is a side view showing the configuration of a main part of the manufacturing system according to Modification 2. [Figure 8] It is a schematic diagram showing the configuration of the manufacturing system according to Modification 3. [Figure 9] It is a schematic diagram showing the configuration of the manufacturing system according to the second embodiment. [Figure 10] It is a flowchart showing an example of the operation of the manufacturing system shown in FIG. 9. [Mode for Carrying Out the Invention]

[0017] Hereinafter, an embodiment of the method and system for manufacturing a laying member according to the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals are used for the same members. In addition, the dimensional ratios in the drawings are exaggerated for convenience of description, and may differ from the actual ratios.

[0018] [First Embodiment] <Configuration of Laying Member Manufacturing System 1> Figure 1 is a block diagram showing the overall configuration of a laying member manufacturing system 1 according to the first embodiment of the present invention. In this manufacturing system 1, for example, a cement manufacturing facility 10 is used to manufacture laying members. The manufactured laying members are laid on soft ground or the like.

[0019] The manufacturing system 1 includes, for example, a cement manufacturing facility 10, a laying member manufacturing facility 20, a dust collector 30, and a chimney 40. In this manufacturing system 1, exhaust gas is supplied from the cement manufacturing facility 10 to the laying member manufacturing facility 20, and carbon dioxide contained in the exhaust gas is fixed to the cementitious hardened body in the laying member manufacturing facility 20. After carbon dioxide is fixed in the laying member manufacturing facility 20, the exhaust gas passes through the dust collector 30 and is discharged into the atmosphere from the chimney 40.

[0020] The cement manufacturing facility 10 includes, for example, a raw material mill 11, a crushed raw material silo 12, a preheater 13, a rotary kiln 16, a clinker cooler 17, and a finish mill 18. For example, the preheater 13 and the raw material mill 11 are connected by an exhaust gas flow path (flue) R11. The exhaust gas collected in this exhaust gas flow path R11 is supplied to the laying member manufacturing facility 20. The exhaust gas includes, for example, carbon dioxide (CO2), moisture (H2O), and sulfur oxide (SO X ). The content of carbon dioxide in the exhaust gas is, for example, about 10% to 20%, the moisture content is, for example, about 10% to 15%, and the content of sulfur oxide is, for example, in ppm units.

[0021] The raw material mill 11 pulverizes a cement raw material M such as limestone.

[0022] The crushed raw material silo 12 stores the cement raw materials that have been crushed by the raw material mill 11.

[0023] The preheater 13 includes multiple cyclones and calcination furnaces and preheats the cement raw materials supplied from the crushed raw material silo 12. The exhaust gas from the preheater 13 is sent through the exhaust gas flow path R11 to the laying material manufacturing equipment 20 via the raw material mill 11. The exhaust gas is used as a drying gas for the cement raw materials in the raw material mill 11.

[0024] The rotary kiln 16 fires the cement raw materials, which have been preheated by the preheater 13, to produce cement clinker.

[0025] The clinker cooler 17 cools the cement clinker produced by the rotary kiln 16.

[0026] The finishing mill 18 grinds the mixture of cement clinker and gypsum, which has been cooled by the clinker cooler 17, to complete the cement.

[0027] The exhaust gas flow path R11 may be equipped with carbon dioxide separation equipment and a dust collector, etc. The carbon dioxide separation equipment separates carbon dioxide from the exhaust gas. The carbon dioxide separation equipment separates carbon dioxide from the exhaust gas using known techniques such as cryogenic separation, chemical absorption, and membrane separation. The dust collector recovers dust contained in the exhaust gas. The exhaust gas that has passed through the carbon dioxide separation equipment and the dust collector may be sent to the laying member manufacturing equipment 20.

[0028] Figure 2 shows an example of the configuration of the laying member manufacturing equipment 20. The laying member manufacturing equipment 20 includes, for example, a fixing device 21, a cementitious hardened body supply unit 22, an exhaust gas supply unit 23, a temperature and humidity meter 24, a filling device 25, and a storage unit 26.

[0029] The immobilization device 21 has, for example, a cylindrical shape with a cavity inside. The cementitious hardened body C and the exhaust gas are brought into contact within this cavity. As a result, carbon dioxide from the exhaust gas is immobilized in the granular cementitious hardened body C, and a carbonated substance (carbonated substance Cc shown in Figure 3 below) is formed. At this time, along with carbon dioxide, trace amounts of sulfur oxides contained in the exhaust gas are also immobilized in the cementitious hardened body C.

[0030] The cylindrical fixing device 21 extends, for example, in a substantially horizontal direction relative to the ground H. That is, the laying member manufacturing equipment 20 has a horizontal fixing device 21. In this horizontal fixing device 21, the other end 21EB is positioned closer to the ground H than the other end 21EA in the direction of extension. For example, a cementitious hardened material supply unit 22 and an exhaust gas supply unit 23 are provided at one end 21EA of the fixing device 21.

[0031] The cementitious hardened material C supplied from the cementitious hardened material supply unit 22 into the immobilization device 21 moves from one end 21EA to the other end 21EB. The exhaust gas supplied from the exhaust gas supply unit 23 into the immobilization device 21 also flows from one end 21EA to the other end 21EB. In other words, the cementitious hardened material C and the exhaust gas are in parallel flow contact within the immobilization device 21.

[0032] One end 21EA and the other end 21EB of the immobilization device 21 are, for example, closed. A damper or the like is provided at one end 21EA and the other end 21EB of the immobilization device 21. It is preferable to use a non-sliding valve or the like as the damper. It is preferable that the inside of the immobilization device 21 has high airtightness. This makes it possible to improve the efficiency of immobilization of carbon dioxide and sulfur oxides into the cementitious hardened body C.

[0033] The immobilization device 21 is composed of, for example, a rotary drum. It is preferable to provide hoods at both ends of the rotary drum. This improves the airtightness inside the rotary drum. The immobilization device 21 may also have, for example, a heater. This makes it possible to more efficiently carry out the immobilization reaction of carbon dioxide and sulfur oxides to the cementitious hardened body C while heating the inside of the immobilization device 21.

[0034] The cementitious material supply unit 22 includes, for example, a hopper. The granular cementitious material C is transported to the hopper by a belt conveyor, for example, from a feeder. The cementitious material supply unit 22 is preferably configured to maintain airtightness inside the fixing device 21 and includes, for example, a rotary valve and a double flap damper.

[0035] The granular cementitious material C supplied from the cementitious material supply unit 22 preferably has a particle size of Recycled Crushed RC 40 to RC10. This makes it easier to fill the container (container 50 in Figure 3, described later) with the carbonation material at a high density in the filling device 25. Furthermore, the cementitious material C with a smaller particle size of RC10 comes into efficient contact with the exhaust gas in the immobilization device 21, allowing the carbonation reaction to proceed more efficiently. The granular cementitious material C is produced, for example, by crushing waste concrete using a crusher.

[0036] Here, cementitious body C refers to a composition containing cement and water that has hardened. The cementitious body may be fully hardened or partially hardened. The partially hardened state is, for example, a state in which hardening is in progress. The cementitious body may be produced from a cement composition other than concrete, for example, from mortar or cement paste.

[0037] It is preferable to use waste materials for the cementitious hardened body C used in manufacturing system 1. This allows for the reuse of waste materials. The granular cementitious hardened body C can be produced, for example, from waste concrete, building material waste, cement paste hardened body waste, or sludge cake generated in ready-mixed concrete.

[0038] In the fixation of carbon dioxide into the cementitious body C, it is desirable to maintain a high humidity level within the reaction system. For this reason, the cementitious body C supplied from the cementitious body supply unit 22 may contain moisture. Alternatively, water may be sprayed onto the cementitious body C using a watering device (for example, the watering device 27 in Figure 9, described later) before supplying the cementitious body C to the fixation device 21. The cementitious body C supplied to the fixation device 21 contains, for example, 2% to 8%, preferably 3% to 6%, of moisture.

[0039] The laying member manufacturing equipment 20 may have a steam supply unit that supplies steam into the fixing device 21. Alternatively, the watering device may spray water into the fixing device 21.

[0040] The exhaust gas supply unit 23 supplies exhaust gas collected in the exhaust gas flow path R11 of the cement manufacturing equipment 10 into the interior of the solidification device 21. The exhaust gas supply unit 23 includes, for example, a tubular member that connects the exhaust gas flow path R11 to the interior of the solidification device 21. The exhaust gas supplied from the exhaust gas supply unit 23 to the solidification device 21 may be heated. This makes it possible to maintain a high temperature inside the solidification device 21.

[0041] The thermometer and hygrometer 24 measures the temperature and humidity inside the immobilization device 21. It is preferable that the temperature inside the immobilization device 21 be maintained at 60°C to 150°C and the humidity at 40%RH to 90%RH. This allows carbon dioxide and sulfur oxides to be immobilized more efficiently in the cementitious hardened body C.

[0042] Inside the immobilization device 21, carbon dioxide and sulfur oxides are immobilized in the cementitious hardened body C, forming a carbonated substance. When the cementitious hardened body C is brought into contact with exhaust gas, carbon dioxide and moisture from the exhaust gas enter the pores of the cementitious hardened body C, filling them. As a result, the carbonated substance has a higher hardness compared to the cementitious hardened body. The carbonated substance generated inside the immobilization device 21 is removed to the outside of the immobilization device 21 and transported to the filling device 25. In the filling device 25, this carbonated substance is filled into a container.

[0043] Figure 3 shows an example of a container 50 filled with a carbonated substance Cc. The container 50 has, for example, a bag shape. Preferably, the container 50 is breathable while possessing deformable flexibility and strength that prevents tearing. Inside such a container 50, calcium silicate and gypsum in the carbonated substance Cc gradually react with carbon dioxide and moisture in the atmosphere, and the strength of the container 50 increases over time. This is a so-called solidification reaction. For example, calcium silicate is an unreacted component of the cementitious hardened body C, and gypsum is produced from sulfur oxides contained in the cementitious hardened body C. For example, a sandbag can be used for the container 50. The container 50 may have any shape, for example, a sphere, an ellipse, or a rectangular parallelepiped. The container 50 may have one opening or multiple openings. The container 50 may contain synthetic fibers such as polypropylene and polyethylene. The container 50 may also contain natural fibers such as hemp and jute.

[0044] It is preferable that the container 50 is filled with the carbonated substance Cc at a higher density. This improves the strength of the container 50 filled with the carbonated substance Cc. In the filling device 25, for example, the carbonated substance Cc is filled into the container 50 in a close-packed state. The weight of the container 50 filled with the carbonated substance Cc is, for example, 5 kg to 2000 kg.

[0045] After the carbonated substance Cc is filled into the container 50 from the filling port, the filling port of the container 50 is closed. That is, the carbonated substance Cc is sealed inside the container 50. As the container 50 surrounds the carbonated substance Cc, tension is generated in the container 50, and the restraining force between the particles of the carbonated substance Cc inside the container 50 increases. As a result, the frictional force between the particles of the carbonated substance Cc increases, and the strength of the container 50 filled with the carbonated substance Cc increases. This is the so-called restraint principle. The carbonated substance Cc filled into the container 50 is transported from the filling device 25 to the storage unit 26.

[0046] Figure 4 shows an example of the configuration of multiple containers 50 stored in the storage unit 26. In the storage unit 26, for example, multiple containers 50 are stacked and stored on a pallet 261. By stacking the containers 50, the weight of the carbonated substance Cc stacked on top increases the density of the carbonated substance Cc inside the container 50. This improves the strength of the containers 50. For example, the containers 50 are shipped sequentially from the bottom of the stacked containers 50. This makes it easier to maintain the strength of the containers 50 as they are shipped.

[0047] The exhaust gas that flows through the immobilization device 21 from one end 21EA to the other end 21EB is sent to the dust collector 30 (Figure 1). For example, an exhaust section is provided near the other end 21EB of the immobilization device 21, and the exhaust gas is sent to the dust collector 30 through this exhaust section. The dust collector 30 collects dust from the exhaust gas. The dust collected by the dust collector 30 may be reused as a cement raw material or the like. The dust collector 30 has, for example, a filter cloth. The exhaust gas that has passed through the dust collector 30 is released into the atmosphere through the chimney 40.

[0048] <Operation of Manufacturing System 1> Figure 5 shows an example of the operation of manufacturing system 1.

[0049] First, the manufacturing system 1 supplies cementitious hardened material C and exhaust gas into the solidification device 21 (step S110). The cementitious hardened material C is produced, for example, by crushing waste concrete, and is supplied into the solidification device 21 from the cementitious hardened material supply unit 22. The exhaust gas is supplied into the solidification device 21 from the exhaust gas flow path R11 of the cement manufacturing equipment 10 via the exhaust gas supply unit 23. This exhaust gas contains, for example, carbon dioxide, moisture, and sulfur oxides.

[0050] Next, the manufacturing system 1 forms a carbonated substance Cc by bringing exhaust gas into contact with the cementitious hardened body C in the immobilization device 21 (step S120). Carbon dioxide and sulfur oxides contained in the exhaust gas are immobilized in this carbonated substance Cc. In other words, the exhaust gas supplied to the immobilization device 21 has its carbon dioxide and sulfur oxide content reduced by contact with the cementitious hardened body C.

[0051] Next, the manufacturing system 1 fills the container 50 with the carbonated substance Cc (step S130). For example, the carbonated substance Cc is taken out of the immobilization device 21 through its outlet and transported to the filling device 25. In this filling device 25, the carbonated substance Cc is filled into the container 50. The exhaust gas discharged from the immobilization device 21 is discharged into the atmosphere through the chimney 40 via the dust collector 30.

[0052] After filling the container 50 with the carbonated substance Cc, the manufacturing system 1 stores the container 50 (step S140). Multiple containers 50 filled with the carbonated substance Cc are stored, for example, by stacking them.

[0053] After this, the manufacturing system 1 sequentially ships the stored containers 50 (step S150). For example, the manufacturing system 1 sequentially ships the bottom container 50 from the stacked containers 50. The shipped containers 50 are laid as laying members on soft ground, etc., to reinforce the ground and foundation of structures. The containers 50 can also be used as materials for disaster prevention, disaster mitigation, and emergency repairs, for example, as temporary levees or wave-dissipating materials. The manufacturing system 1 manufactures laying members in this manner, for example.

[0054] Furthermore, a high-temperature environment of approximately 800°C is required for carbon dioxide to be re-desorbed from the carbonated substance Cc. Therefore, even if the container 50 filled with the carbonated substance Cc is used as a laying component, the possibility of carbon dioxide being released back into the atmosphere from the carbonated substance Cc is low.

[0055] <Effects and Effects of Manufacturing System 1> In the manufacturing system 1 of this embodiment, carbon dioxide is fixed in the cementitious hardened body C, and the carbonated substance Cc is filled into the container 50. As a result, a container 50 filled with the carbonated substance Cc is obtained, and this container 50 can be used as a laying member for laying on the ground.

[0056] In this manufacturing system 1, in addition to fixing carbon dioxide into the cementitious hardened body C, the fixed carbonated substance Cc is effectively utilized as a laying material, making it possible to reduce carbon dioxide emissions more effectively.

[0057] Furthermore, as mentioned above, a solidification reaction proceeds with the carbonated substance Cc. For this reason, the strength of the laying members utilizing the carbonated substance Cc is high, making them suitable for improving the strength of soft ground and other similar structures.

[0058] In addition, when exhaust gas is brought into contact with the cementitious hardened body C, sulfur oxides contained in the exhaust gas are also immobilized on the cementitious hardened body C. This reduces the amount of sulfur oxides released into the atmosphere. Furthermore, manufacturing system 1 eliminates the need for pretreatment equipment such as desulfurization towers. This will be explained below.

[0059] Technologies such as the amine process and catalytic processes are known for reducing the amount of carbon dioxide in exhaust gas. When using these amine and catalytic processes, if sulfur oxides are present in the exhaust gas along with carbon dioxide, the reaction may malfunction. Therefore, pretreatment equipment, such as a desulfurization tower, is required to remove sulfur oxides from the exhaust gas beforehand in the amine and catalytic processes.

[0060] In contrast, in manufacturing system 1, sulfur oxides are immobilized in the cementitious hardened body C along with carbon dioxide, eliminating the need for pretreatment equipment such as desulfurization towers. Therefore, it is possible to reduce the amount of carbon dioxide and sulfur oxides released into the atmosphere with a simpler configuration.

[0061] In addition, in manufacturing system 1, the exhaust gas that has passed through the laying material manufacturing equipment 20 flows to the dust collector 30, making it possible to suppress the deterioration of the dust collector 30 caused by sulfur oxides contained in the exhaust gas.

[0062] The following describes modifications and other embodiments of the manufacturing system 1 described in the above embodiment. In order to avoid repetition, detailed explanations of configurations similar to those described in the above embodiment will be omitted.

[0063] [Variation 1] Figure 6 shows an example of the configuration of the main parts of the manufacturing system 1 according to Modification 1. In this manufacturing system 1, a cementitious hardened material supply unit 22 is provided at one end 21EA of the fixing device 21, and an exhaust gas supply unit 23 is provided at the other end 21EB. Except for this point, the manufacturing system 1 according to Modification 1 has the same configuration as the manufacturing system 1 of the first embodiment and produces the same effects.

[0064] In this laying member manufacturing equipment 20, the cementitious hardened material C supplied from the cementitious hardened material supply unit 22 into the fixing device 21 moves from one end 21EA to the other end 21EB. The exhaust gas supplied from the exhaust gas supply unit 23 into the fixing device 21 flows from the other end 21EB to the one end 21EA. That is, within the fixing device 21, the cementitious hardened material C and the exhaust gas are in countercurrent contact.

[0065] [Variation 2] Figure 7 shows an example of the configuration of the main part of the manufacturing system 1 according to Modification 2. In this manufacturing system 1, the fixing device 21 extends in a substantially vertical direction with respect to the ground H. That is, the manufacturing system 1 has a vertical fixing device 21. Except for this point, the manufacturing system 1 according to Modification 2 has the same configuration as the manufacturing system 1 of the first embodiment and produces the same effects.

[0066] In this solidification device 21, for example, a cementitious hardened material supply unit 22 is provided near the upper end, and an exhaust gas supply unit 23 is provided near the lower end. That is, within the solidification device 21, the cementitious hardened material C and the exhaust gas are in countercurrent contact. Alternatively, the exhaust gas supply unit 23 may be provided near the upper end, and the cementitious hardened material C and the exhaust gas may be in parallel contact within the solidification device 21. By providing a gate damper or the like at the lower end of the solidification device 21, continuous supply of cementitious hardened material C and discharge of carbonated material Cc become possible.

[0067] A portion of the chimney 40 may be used as a fixing device 21.

[0068] [Example 3] Figure 8 shows an example of the configuration of the manufacturing system 1 according to Modification 3. In this manufacturing system 1, exhaust gas that has passed through the dust collector 30 is supplied to the laying member manufacturing equipment 20. Except for this point, the manufacturing system 1 according to Modification 3 has the same configuration as the manufacturing system 1 of the first embodiment described above and produces the same effects.

[0069] In this manufacturing system 1, the exhaust gas collected in the exhaust gas flow path R11 is first sent to the dust collector 30. After passing through the dust collector 30, the exhaust gas is supplied to the laying member manufacturing equipment 20 (fixing device 21). The fixing device 21 may extend in a substantially horizontal direction with respect to the ground H (Figure 2), or it may extend in a substantially vertical direction with respect to the ground H (Figure 7). Within the fixing device 21, the cementitious hardened body C and the exhaust gas may be in parallel flow contact or counterflow contact.

[0070] <Second Embodiment> Figure 9 shows an example of the configuration of the main components of the manufacturing system 1 according to the second embodiment of the present invention. In this manufacturing system 1, after the cementitious hardened body C is filled into the container 50, carbon dioxide and sulfur oxides are immobilized in the cementitious hardened body C. Except for this point, the manufacturing system 1 according to the second embodiment has the same configuration as the manufacturing system 1 of the first embodiment and produces the same effects.

[0071] The fixing device 21 of this manufacturing system 1 has, for example, a roughly rectangular parallelepiped shape, i.e., a box shape. For example, a curing tank can be used as the fixing device 21. The cementitious hardened body C, which is filled in a container 50, is supplied to this fixing device 21. The exhaust gas discharged from the fixing device 21 may be flowed to a dust collector 30 (Figure 1), or the exhaust gas that has passed through the dust collector 30 may be supplied to the fixing device 21 (Figure 8).

[0072] The manufacturing system 1 may have a watering device 27 for spraying water onto the cementitious hardened body C. This watering device 27 sprays water onto the cementitious hardened body C, for example, when it is filled into a container 50. The watering device 27 sprays water at a temperature of about 60°C onto the cementitious hardened body C. By adjusting the temperature of the sprayed water to about 60°C, it becomes easier to maintain the temperature inside the fixing device 21. It is preferable that the watering device 27 adjusts the size of the droplets before spraying them onto the cementitious hardened body C. By spraying fine droplets onto the cementitious hardened body C, it becomes easier to maintain the humidity inside the fixing device 21. In this manufacturing system 1, the cementitious hardened body C, which contains a large amount of unreacted calcium silicate, is filled into the container 50. As a result, inside the container 50, the calcium silicate that contributes to the solidification reaction reacts with carbon dioxide and moisture in a state of close contact with each other. This makes it possible to increase the strength of the container 50 in a shorter period of time.

[0073] Figure 10 shows an example of the operation of this manufacturing system 1.

[0074] First, the manufacturing system 1 fills the container 50 with cementitious hardened material C (step S210). For example, the filling device 25 fills the container 50 with cementitious hardened material C.

[0075] Next, the manufacturing system 1 sprays water onto the cementitious hardened body C, which is filled into the container 50 (step S220). For example, water is sprayed onto the cementitious hardened body C by a watering device 27. The order of steps S210 and S220 may be reversed.

[0076] Next, the manufacturing system 1 supplies the container 50 and exhaust gas into the immobilization device 21 (step S230). The container 50 is filled with cementitious hardened material C.

[0077] Next, the manufacturing system 1 forms a carbonated substance Cc by bringing the cementitious hardened body C into contact with exhaust gas in the immobilization device 21 (step S240). The carbonated substance Cc is formed in the containment container 50.

[0078] After forming the carbonated substance Cc, the manufacturing system 1 stores the container 50 (step S250). Subsequently, the manufacturing system 1 sequentially ships the stored containers 50 (step S260).

[0079] In the manufacturing system 1 according to the second embodiment, in addition to the fixation of carbon dioxide into the cementitious hardened body C, the fixed carbonated substance Cc is effectively utilized as a laying member, similar to the manufacturing system 1 according to the first embodiment described above. This makes it possible to reduce carbon dioxide emissions more effectively.

[0080] Furthermore, after filling the containment body 50 with cementitious hardened material C, carbon dioxide and sulfur oxides are immobilized in the cementitious hardened material C, allowing the restraint principle to work more effectively. Therefore, it becomes possible to improve the strength of the laid member.

[0081] The configuration of manufacturing system 1 described above is intended to illustrate the main features of the embodiments and modified examples described above, and is not limited to the above configuration. Various modifications are possible within the scope of the claims. Furthermore, it does not preclude configurations found in general manufacturing systems.

[0082] For example, the above embodiments and modifications describe an example in which exhaust gas discharged from the cement manufacturing equipment 10 is supplied to the laying member manufacturing equipment 20, but the invention is not limited to this. Exhaust gas discharged from other equipment and factories may also be supplied to the laying member manufacturing equipment 20.

[0083] Furthermore, the manufacturing system 1 may fill a portion of the cementitious hardened body C into the container 50 and expose the remaining portion to exhaust gas without filling it into the container 50. In other words, the cementitious hardened body C that has been filled into the container 50 and the cementitious hardened body C that has not been filled into the container 50 may be mixed together in the immobilization device 21.

[0084] Furthermore, the manufacturing system 1 may have multiple dust collectors 30. For example, dust collectors 30 may be provided both upstream and downstream of the laying member manufacturing equipment 20.

[0085] Furthermore, the processing units in the flowcharts of the above embodiments are divided according to the main processing content in order to facilitate understanding of each process. The present invention is not limited by the way the processing steps are classified. Each process can be further divided into more processing steps. Also, one processing step may contain even more processing steps. In addition, the manufacturing system 1 may perform processing in an order different from the order described in the above embodiments and modifications. [Explanation of Symbols]

[0086] 10. Cement manufacturing equipment, 11. Raw material mill, 12 silos for crushed raw materials, 13. Preheater, 20. Equipment for manufacturing laying components, 21 Immobilization device, 22. Cementaceous hardened material supply unit, 23 Exhaust gas supply unit, 24 Thermohygrometer, 25 filling equipment; 26 Storage Department; 27 Sprinkler system, 30 dust collectors, 40 Chimneys, 50 containment units.

Claims

1. To fix at least carbon dioxide in the cementitious hardened body and form a carbonated substance, Filling the container with the aforementioned carbonated substance A method for manufacturing a laying member that includes this component.

2. Filling the container with hardened cementum, The cementitious hardened body filled in the container is subjected to the fixation of at least carbon dioxide to form a carbonated substance. A method for manufacturing a laying member that includes this component.

3. The cementitious hardened body is in the form of powder or granules. The method for manufacturing a laying member according to claim 1 or 2, wherein the cementitious hardened body has a particle size of RC40 to RC10.

4. A method for manufacturing a laying member according to claim 1 or 2, wherein carbon dioxide and sulfur oxides are immobilized in the cementitious hardened body by forming the aforementioned carbonated substance.

5. A method for manufacturing a laying member according to claim 1 or 2, wherein a sandbag is used as the container.

6. A method for manufacturing a laying member according to claim 1 or 2, further comprising stacking and storing a plurality of the containers filled with the carbonated substance.

7. A method for manufacturing a laying member according to claim 6, further comprising shipping the lowest of the stacked containers.

8. An immobilization device that immobilizes at least carbon dioxide into a cementitious hardened body to form a carbonated substance, A filling device for filling a container with at least one of the cementitious hardened material and the carbonated substance. A manufacturing system for laying components equipped with the following features.

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