Resin composition production system using carbon dioxide, resin composition production method, inorganic material production apparatus, and inorganic material production method

Abstract

To provide a resin composition production system that enables effective utilization of resources.SOLUTION: A resin composition production system includes a carbon dioxide recovery device 1000 and a resin composition production device 1010. In the carbon dioxide recovery device 1000, carbon dioxide is recovered and a resin filler is formed, where the resin filler can be supplied to the resin composition production device 1010. The resin composition production device 1010 has a mixing section. In the mixing section, the resin and the resin filler are mixed to produce a resin composition.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present disclosure relates to a resin composition production system, a resin composition production method, an inorganic material production apparatus, and an inorganic material production method that utilize carbon dioxide. [Background technology]

[0002] An example of an environmentally friendly material is an inorganic material containing limestone as an inorganic filler. Patent Document 1 discloses a resin composition containing calcium carbonate particles and a thermoplastic resin. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6985775 Summary of the Invention [Problem to be solved by the invention]

[0004] There are two types of calcium carbonate: heavy calcium carbonate, which is produced from limestone, and light calcium carbonate, which is produced by chemical precipitation. Limestone, the raw material for heavy calcium carbonate, is abundant in reserves, but these reserves are limited. On the other hand, light calcium carbonate is produced by introducing carbon dioxide into a calcium-containing liquid, which contributes to reducing carbon dioxide emissions, but there are resource issues involved in preparing the calcium-containing liquid. Resource issues are particularly important in Japan, where resources are limited.

[0005] Therefore, an object of the present disclosure is to provide a resin composition production system and a resin composition production method that utilize carbon dioxide and enable effective use of resources. [Means for solving the problem]

[0006] In order to achieve the above object, the resin composition production system according to the present disclosure includes: The carbon dioxide recovery device and the resin composition production device are included. The carbon dioxide capture device The apparatus includes an electrolysis tank, a first reaction tank, a second reaction tank, a liquid delivery means, a gas delivery means, and a recovery tank, the electrolysis cell includes a diaphragm, an anode, and a cathode; an anode electrolysis chamber and a cathode electrolysis chamber are provided in the electrolysis tank by the diaphragm; The anode is placed in the anodic electrolysis chamber, The cathode is disposed in the cathodic electrolysis chamber; an aqueous sodium salt solution can be supplied to both the anodic electrolysis chamber and the cathodic electrolysis chamber by the liquid supply means; In the cathodic electrolysis chamber, an aqueous sodium hydroxide solution is generated by electrolysis; The sodium hydroxide aqueous solution can be delivered to the first reaction tank by the delivery means, In the first reaction tank, the gas supply means can supply a carbon dioxide-containing gas into the aqueous sodium hydroxide solution, carbon dioxide in the carbon dioxide-containing gas reacts with sodium in the sodium hydroxide aqueous solution to produce sodium carbonate; the second reaction tank is capable of supplying the sodium carbonate salt-containing aqueous solution from the first reaction tank and also capable of supplying an aqueous calcium chloride solution containing calcium chloride by the liquid supply means; the sodium carbonate salt reacts with the calcium chloride to produce calcium carbonate salt, a calcium carbonate salt-containing liquid containing the calcium carbonate salt can be supplied to the recovery tank by the liquid supply means, In the recovery tank, the calcium carbonate salt is recovered as a resin additive, The resin composition manufacturing apparatus includes a mixing unit, In the mixing section, the resin additive and the resin are mixed to produce a resin composition. This is a resin composition manufacturing system that uses carbon dioxide.

[0007] The method for producing a resin composition according to the present disclosure includes: The method includes a carbon dioxide recovery step and a resin composition production step, The carbon dioxide recovery step includes: The method includes an electrolysis step, a first reaction step, a second reaction step, a liquid delivery step, a gas delivery step, and a recovery step, The electrolysis step is carried out using an electrolysis bath, the electrolysis cell includes a diaphragm, an anode, and a cathode; an anode electrolysis chamber and a cathode electrolysis chamber are provided in the electrolysis tank by the diaphragm; The anode is placed in the anodic electrolysis chamber, The cathode is disposed in the cathodic electrolysis chamber; the sodium salt aqueous solution can be supplied to both the anodic electrolysis chamber and the cathodic electrolysis chamber by the solution sending step, In the cathodic electrolysis chamber, an aqueous sodium hydroxide solution is generated by electrolysis; In the first reaction step, the sodium hydroxide aqueous solution is added by the liquid feeding step, In the first reaction step, a carbon dioxide-containing gas is supplied into the aqueous sodium hydroxide solution in the gas supply step, carbon dioxide in the carbon dioxide-containing gas reacts with sodium in the sodium hydroxide aqueous solution to produce sodium carbonate; In the second reaction step, the aqueous solution containing sodium carbonate in the first reaction tank is supplied and an aqueous calcium chloride solution containing calcium chloride is supplied in the liquid supply step, the sodium carbonate salt reacts with the calcium chloride to produce calcium carbonate salt, a calcium carbonate salt-containing liquid containing the calcium carbonate salt is supplied to the recovery step by the liquid sending step, In the recovery step, the calcium carbonate salt is recovered as a resin additive, the resin composition production step is carried out using the resin composition production apparatus including a mixing section, In the mixing section, the resin additive and the resin are mixed to produce a resin composition. This is a method for producing a resin composition using carbon dioxide. [Effects of the Invention]

[0008] According to the present disclosure, natural resources such as seawater, which are abundant in Japan, can be used as a raw material for the resin filler (inorganic filler, etc.) used in the resin composition, enabling effective use of resources. Furthermore, according to the present disclosure, it is also possible to recover carbon dioxide during the production of the resin composition, thereby contributing to the reduction of carbon dioxide emissions. Furthermore, according to the present disclosure, since electrolysis is used, it is possible to produce hydrogen, which is a clean energy source. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a first schematic diagram showing an example of the configuration of a carbon dioxide capture device according to the present disclosure. [Figure 2] FIG. 2 is a second schematic diagram showing an example of the configuration of a carbon dioxide capture device according to the present disclosure. [Figure 3] FIG. 3 is a third schematic diagram showing an example of the configuration of a carbon dioxide capture device according to the present disclosure. [Figure 4] FIG. 4 is a fourth schematic diagram showing an example of the configuration of a carbon dioxide capture device according to the present disclosure. [Figure 5] FIG. 5 is a fifth schematic diagram showing an example of the configuration of a carbon dioxide capture device according to the present disclosure. [Figure 6] FIG. 6 is a sixth schematic diagram showing an example of the configuration of a carbon dioxide capture device according to the present disclosure. [Figure 7] FIG. 7 is a seventh schematic diagram showing an example of the configuration of a carbon dioxide capture device according to the present disclosure. [Figure 8] FIG. 8 is an eighth schematic diagram showing an example of the configuration of a carbon dioxide capture device according to the present disclosure. [Figure 9] FIG. 9 is a ninth schematic diagram showing an example of the configuration of a carbon dioxide capture device according to the present disclosure. [Figure 10] FIG. 10 is a vertical cross-sectional view showing a specific example of a carbon dioxide capture device according to the present disclosure. [Figure 11] FIG. 11 is a vertical cross-sectional view showing another specific example of a carbon dioxide capture device according to the present disclosure. [Figure 12] FIG. 12 is a configuration diagram showing an example of a resin composition production system according to the present disclosure. [Figure 13] FIG. 13 is a configuration diagram showing an example of a carbon dioxide recovery device for a resin composition system according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0010] In this system, Seawater is used as the sodium salt aqueous solution and the calcium chloride aqueous solution. This may be the case.

[0011] In this system, the seawater contains sodium chloride, calcium chloride, and magnesium chloride; the seawater can be supplied to both the anodic electrolysis chamber and the cathodic electrolysis chamber by the liquid supply means; In the cathodic electrolysis chamber, the sodium hydroxide aqueous solution and the magnesium hydroxide-containing solution are produced by electrolysis; The magnesium hydroxide-containing liquid can be delivered to the recovery tank by the liquid delivery means, The seawater can be supplied to the second reaction tank by the liquid supply means, In the second reaction tank, the calcium carbonate salt is produced, In the recovery tank, the calcium carbonate and the magnesium hydroxide are recovered as resin additives, In the mixing section, the resin additive and the resin may be mixed to produce a resin composition.

[0012] In this system, further comprising a sediment transfer means; the calcium carbonate salt precipitated in at least one of the second reaction tank and the recovery tank is transferred to the mixing section by the precipitate transfer means, instead of or in addition to the liquid transfer means; The magnesium hydroxide precipitated in at least one of the cathodic electrolysis chamber and the recovery tank is transferred to the mixing section. This may be the case.

[0013] In this system, In the electrolysis cell, the chlorine gas generated in the anodic electrolysis chamber can be supplied into the aqueous sodium salt solution in the anodic electrolysis chamber by the gas supply means. This may be the case.

[0014] In this system, the anodic electrolysis chamber includes an ultraviolet irradiation means, The ultraviolet irradiation means decomposes the hypochlorous acid produced in the anodic electrolysis chamber to produce hydrochloric acid. This may be the case.

[0015] In this system, Further comprising a fuel cell power plant; The hydrogen gas generated in the cathode electrolysis chamber can be supplied to the fuel cell power generation device by the gas supply means. This may be the case.

[0016] In this system, the fuel cell power generation device is capable of supplying electricity to the anode and the cathode; This may be the case.

[0017] In this system, Furthermore, the solar power generation device is included. The solar power generation device is capable of supplying electricity to the anode and the cathode. This may be the case.

[0018] In this manufacturing method Seawater is used as the sodium salt aqueous solution and the calcium chloride aqueous solution. This may be the case.

[0019] In this manufacturing method, the seawater contains sodium chloride, calcium chloride, and magnesium chloride; The seawater is supplied to both the anodic electrolysis chamber and the cathodic electrolysis chamber by the liquid supplying step, In the cathodic electrolysis chamber, the sodium hydroxide aqueous solution and the magnesium hydroxide-containing solution are produced by electrolysis; supplying the magnesium hydroxide-containing liquid to the recovery tank through the liquid sending step; The seawater is supplied to the second reaction tank through the liquid supplying step; In the second reaction tank, the calcium carbonate salt is produced, In the recovery tank, the calcium carbonate and the magnesium hydroxide are recovered as resin additives, In the mixing section, the resin additive and the resin may be mixed to produce a resin composition.

[0020] In this manufacturing method, Further, a precipitate transfer step is included, In place of or in addition to the liquid sending step, the calcium carbonate salt precipitated in at least one of the second reaction tank and the recovery tank is transferred to the mixing section by the precipitate transferring step, The magnesium hydroxide precipitated in at least one of the cathodic electrolysis chamber and the recovery tank is transferred to the mixing section. This may be the case.

[0021] In this manufacturing method, In the electrolysis step, the chlorine gas generated in the anodic electrolysis chamber is supplied to the aqueous sodium salt solution in the anodic electrolysis chamber by the gas supply step. This may be the case.

[0022] In this manufacturing method, The anodic electrolysis chamber includes an ultraviolet irradiation step, The ultraviolet irradiation step decomposes the hypochlorous acid produced in the anodic electrolysis chamber to produce hydrochloric acid. This may be the case.

[0023] Further, the method includes a fuel cell power generation step using the fuel cell power generation device, supplying the hydrogen gas generated in the cathode electrolysis chamber to the fuel cell power generation device through the gas sending step; This may be the case.

[0024] In this manufacturing method, the fuel cell power generation device is capable of supplying electricity to the anode and the cathode; This may be the case.

[0025] In this manufacturing method, Further, the method includes a solar power generation step using a solar power generation device, The solar power generation device is capable of supplying electricity to the anode and the cathode. This may be the case.

[0026] The resin filler manufacturing apparatus of the present disclosure is a resin filler manufacturing apparatus that includes the carbon dioxide capture apparatus of the present disclosure. The resin filler manufacturing method of the present disclosure is a resin filler manufacturing method including the carbon dioxide recovery step of the present disclosure. The resin filler manufacturing apparatus and the resin filler manufacturing method may be configured such that an electrically conductive and water-permeable membrane or plate (excluding an ion exchange membrane) is used as the diaphragm of the carbon dioxide capture device. By using such a diaphragm, electrolysis is possible in the present disclosure without using an expensive ion exchange membrane. The diaphragm may be, for example, Piolus Sheet PE (500x300x5t, Fuji Chemical Co., Ltd.).

[0027] In the present disclosure, the term "system" is a concept that also has the meaning of "apparatus." Furthermore, the carbon dioxide capture apparatus of the present disclosure is also the inorganic material production apparatus of the present disclosure, and the carbon dioxide capture process of the present disclosure is also the inorganic material production method of the present disclosure. For example, the inorganic material production apparatus of the present disclosure supplies an inorganic material such as a carbonate to the resin composition production apparatus of the present disclosure. For example, the inorganic material production method of the present disclosure supplies an inorganic material to the resin composition production process of the present disclosure. In the present disclosure, the resin filler is not particularly limited and may be, for example, an inorganic filler (filling agent) to be blended into a resin composition, an additive such as a flame retardant, etc. Examples of the inorganic material include calcium carbonate (CaCO3) and magnesium hydroxide (Mg(OH)2).

[0028] Next, an apparatus and a method according to an embodiment of the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the following embodiments. In the following drawings, the same parts are designated by the same reference numerals. Furthermore, the descriptions of the embodiments can be mutually incorporated unless otherwise specified, and the configurations of the embodiments can be combined unless otherwise specified.

[0029] [Embodiment 1] First, an example of the configuration of a carbon dioxide recovery apparatus 1A of this embodiment (hereinafter also referred to as "the apparatus 1A") will be described using FIG. 1. As shown in FIG. 1, the apparatus 1A includes, for example, an electrolysis tank 2 and a reaction tank 3. Note that the electrolysis tank 2 and the reaction tank 3 are, for example, rectangular parallelepiped containers as shown in FIG. 1, but are not limited to this. The tanks may be, for example, cylindrical, and may have any shape. The electrolysis tank 2 and the reaction tank 3 may be independent or integrated. Furthermore, the apparatus 1A may consist of one electrolysis tank 2 and one reaction tank 3, or at least two or more of each may constitute the apparatus 1A, with no limit on the number of tanks. Note that the materials of the tanks may be of any type as long as they are capable of electrolysis in the electrolysis tank 2 and chemical reaction in the reaction tank 3.

[0030] The electrolytic cell 2 includes a diaphragm 100, an anode 24, and a cathode 25. The diaphragm 100 defines an anodic electrolysis chamber 20 and a cathodic electrolysis chamber 21 within the electrolytic cell 2. The diaphragm 100 may be, for example, a hard member or a membranous member such as a semipermeable membrane. As such, the material of the diaphragm 100 is not limited. In FIG. 1 , the diaphragm 100 extends to the bottom of the electrolytic cell 2 and completely divides the electrolytic cell 2, but this is not limiting. The diaphragm 100 may extend, for example, from the top to near the center of the electrolytic cell 2 and connect to the bottom of the electrolytic cell 2. The shape, position, material, etc. of the diaphragm 100 may be any suitable configuration as long as it can divide the electrolytic cell 2 into an anodic electrolysis chamber 20 and a cathodic electrolysis chamber 21, electrolyze the aqueous solution in the electrolytic cell 2, and produce products in the anodic electrolysis chamber 20 and the cathodic electrolysis chamber 21, respectively. For example, the diaphragm 100 dividing the space of the electrolytic cell 2 into left and right compartments may be made of a hard, impermeable material with its lower end open to allow the anodic electrolysis chamber 20 and the cathodic electrolysis chamber 21 to communicate with each other. Alternatively, the diaphragm 100 may be made of a semipermeable membrane and completely divide the left and right compartments of the electrolytic cell 2. The anode 24 is disposed in the anodic electrolysis chamber 20. The cathode 25 is disposed in the cathodic electrolysis chamber 21.

[0031] As shown in FIG. 1 , the apparatus 1A includes, for example, a liquid delivery means and a gas delivery means. The liquid delivery means is a means for delivering an aqueous solution, for example, by supplying the aqueous solution to each tank, such as the electrolysis tank 2 or the reaction tank 3, discharging the aqueous solution from each tank, or transferring the aqueous solution from one tank to another. Therefore, the number of liquid delivery means is not limited to one, and may be two or more, for example, the liquid delivery means 18 for supplying the aqueous solution to the electrolysis tank 2 and the liquid delivery means 16 for transferring the aqueous solution from the electrolysis tank 2 to the reaction tank 3. The liquid delivery means 18 in FIG. 1 is capable of supplying the metal salt aqueous solution to both the anodic electrolysis chamber 20 and the cathodic electrolysis chamber 21, for example. The liquid delivery means 16 in FIG. 1 is capable of transferring the metal hydroxide salt aqueous solution from the electrolysis tank 2 to the reaction tank 3, for example. The liquid delivery means may be, for example, hard or soft. The liquid delivery means may be, for example, a pipe-shaped device, but is not limited thereto. The material and shape of the liquid delivery means may be any suitable form as long as they are capable of delivering an aqueous solution. The liquid delivery means may also include, for example, a pump for delivering an aqueous solution. The gas delivery means is a means for delivering gas, such as supplying gas to each tank, discharging gas from each tank, or moving gas from one position to another. As with the liquid delivery means, the number of gas delivery means is not limited to one, and two or more may be provided. In FIG. 1 , the gas delivery means are, for example, the gas delivery means 19 for supplying air to the reaction tank 3 and the gas delivery means 22 for delivering gas from the top to the aqueous solution in the electrolysis tank 2. The gas delivery means 19 in FIG. 1 is, for example, capable of delivering a carbon dioxide-containing gas to the metal hydroxide salt aqueous solution in the reaction tank. 1 is capable of supplying, for example, chlorine gas generated in the anodic electrolysis chamber 20 in the electrolysis cell 2 to the aqueous metal salt solution in the anodic electrolysis chamber 20. As in the case of the liquid supplying means, the material and shape of the gas supplying means may be any type as long as they are capable of supplying gas, and may be equipped with a pump, for example.

[0032] Next, an example of the carbon dioxide capture method of this embodiment will be described. The carbon dioxide capture method of this embodiment is carried out as follows, for example, using the present apparatus 1A shown in FIG. 1. Note that the carbon dioxide capture method of this embodiment is not limited to using the present apparatus 1A of FIG. 1. Furthermore, the order in which the following steps are performed is not limited to the order described. Therefore, the carbon dioxide capture method of this embodiment may be carried out, for example, in an order different from the order described, or two or more steps may be performed simultaneously.

[0033] First, in the electrolysis cell 2, the liquid supplying means 18 supplies an aqueous metal salt solution to both the anodic electrolysis chamber 20 and the cathodic electrolysis chamber 21. Then, the electrolysis cell 2 generates an aqueous metal hydroxide salt solution in the cathodic electrolysis chamber 21 by electrolysis (the above is the electrolysis step). As described above, the diaphragm 100 of the electrolysis cell 2 may not extend to the bottom of the electrolysis cell 2, for example. That is, the electrolysis cell 2 may be connected at its lower part, for example. Therefore, the liquid supplying means 18 is not limited to injecting the aqueous metal salt solution into two locations. The liquid supplying means 18 may be configured to inject the aqueous metal salt solution into one location at the bottom of the electrolysis cell 2 and supply the aqueous metal salt solution to both the anodic electrolysis chamber 20 and the cathodic electrolysis chamber 21 in the electrolysis cell 2, for example. The metals include alkali metals and alkaline earth metals. Therefore, the metal salt aqueous solution includes, for example, a sodium chloride aqueous solution, a potassium chloride aqueous solution, a calcium chloride aqueous solution, a magnesium chloride aqueous solution, etc. Furthermore, the metal hydroxide salt aqueous solution includes, for example, a sodium hydroxide aqueous solution, a potassium hydroxide aqueous solution, a calcium hydroxide aqueous solution, a magnesium hydroxide aqueous solution, etc. For example, when a sodium chloride aqueous solution is electrolyzed, chlorine gas is generated on the anode 24 side, and hydrogen gas is generated on the cathode 25 side, and a sodium hydroxide aqueous solution is produced. Note that a portion of the chlorine gas generated on the anode 24 side reacts with water in the aqueous solution to form hydrochloric acid and hypochlorous acid (Cl + HO → HCl + HClO).

[0034] Next, in the reaction tank 3, the liquid delivery means 16 delivers the metal hydroxide aqueous solution to the reaction tank 3, and the gas delivery means 19 supplies a carbon dioxide-containing gas into the metal hydroxide aqueous solution in the reaction tank 3, and the carbon dioxide in the carbon dioxide-containing gas reacts with the metal salt in the metal hydroxide aqueous solution to produce carbonate (reaction step). Examples of the carbonate include sodium carbonate, potassium carbonate, calcium carbonate, magnesium carbonate, etc. The carbonate also includes bicarbonate. Therefore, examples of the carbonate include sodium bicarbonate, potassium bicarbonate, calcium bicarbonate, magnesium bicarbonate, etc. In this step, the carbon dioxide contained in the carbon dioxide-containing gas is taken up by the carbonate and separated from the carbon dioxide-containing gas.

[0035] The contact method between the metal hydroxide salt aqueous solution and the carbon dioxide-containing gas is, for example, a method of releasing the carbon dioxide-containing gas in the form of bubbles into the metal hydroxide salt aqueous solution (bubbling). This method can efficiently react carbon dioxide with the metal salt. Alternatively, the contact method can be the opposite, where the metal hydroxide salt aqueous solution is turned into a fine mist and the carbon dioxide-containing gas is supplied into the mist. This method can efficiently make the chemical reaction, similar to the case of bubbling. In addition, the mist method can reduce the amount of the metal hydroxide salt aqueous solution used, which has the effect of saving water.

[0036] As described above, chlorine gas generated by electrolysis in the electrolysis cell 2 reacts with water in the aqueous solution to form hydrochloric acid and hypochlorous acid. However, not all of the chlorine gas reacts with water, and some remains as chlorine gas. In FIG. 1, chlorine gas accumulates in the upper part of the anodic electrolysis chamber 20. Therefore, the gas supply means 22 supplies the chlorine gas generated in the anodic electrolysis chamber 20 to the aqueous metal salt solution in the anodic electrolysis chamber 20 (chlorine gas supply step). For example, the gas supply means 22 discharges chlorine gas from the chlorine gas accumulation portion in the upper part of the anodic electrolysis chamber 20 in FIG. 1 and releases the chlorine gas into the aqueous metal salt solution in the lower part of the anodic electrolysis chamber 20. The released chlorine gas reacts with water in the aqueous solution to form hydrochloric acid and hypochlorous acid (Cl + HO → HCl + HClO).

[0037] The present device 1A of the present embodiment can prevent chlorine gas from being discharged to the outside by promoting the reaction with water in this way. In addition, as a result of preventing the generated chlorine gas from being discharged to the outside, the need to suppress the implementation of electrolysis is reduced, so this process has the effect of improving the efficiency of electrolysis. As shown in FIG. 1, the carbon dioxide capture apparatus of this embodiment is provided with a filter F midway through the liquid delivery means 16 that delivers the liquid from the electrolysis tank 2 to the reaction tank 3. When the liquid delivery means 16 delivers the aqueous sodium hydroxide (NaOH) solution produced by electrolysis, the aqueous solution may contain insoluble matters such as Mg(OH)2 and Ca(OH)2, which are filtered out by the filter F. The insoluble matters recovered by filtration may be used as inorganic materials in the resin composition production apparatus described below. In particular, when seawater is used, there is a possibility that a large amount of insoluble matters will precipitate, and the filter F is useful for making effective use of these matters.

[0038] [Embodiment 2] An example of the configuration of a carbon dioxide recovery apparatus 1B of this embodiment (hereinafter also referred to as "this apparatus 1B") will be described using Figure 2. As shown in Figure 2, this apparatus 1B includes, for example, a recovery tank 4 in addition to the configuration of this apparatus 1A of embodiment 1 (electrolysis tank 2 and reaction tank 3). The configuration of this apparatus 1A is the same as that of this apparatus 1B of this embodiment, so the description of embodiment 1 can be used.

[0039] As shown in FIG. 2 , the apparatus 1B of this embodiment includes, for example, a collection tank 4. For example, a liquid delivery means 17 can supply a carbonate-containing liquid containing the carbonate produced in the reaction tank 3 to the collection tank 4. The shape and material of the collection tank 4 are not particularly limited, as in the electrolysis tank 2 and the reaction tank 3. As in the first embodiment, the electrolysis tank 2, the reaction tank 3, and the collection tank 4 may be independent of each other or may be integrated. Furthermore, the apparatus 1B may be composed of a single electrolysis tank 2, a single reaction tank 3, and a single collection tank 4, or two or more of at least one of them may constitute the apparatus 1B; the number of these is not limited. The shape and material of the liquid delivery means 17 are not particularly limited, as in the other liquid delivery means.

[0040] Next, an example of the carbon dioxide capture method of this embodiment will be described. The carbon dioxide capture method of this embodiment is carried out as follows, for example, using the apparatus 1B shown in FIG. 2. Note that the carbon dioxide capture method of this embodiment is not limited to using the apparatus 1B of FIG. 2. Furthermore, the order in which the following steps are carried out is not limited to the order described. Therefore, the carbon dioxide capture method of this embodiment may be carried out, for example, in an order different from the order described, or two or more steps may be carried out simultaneously.

[0041] First, the electrolysis step, reaction step, and chlorine gas supply step are the same as those in the first embodiment, and therefore the explanations therefor can be used.

[0042] Next, the liquid delivery means 17 of this embodiment supplies the carbonate-containing liquid containing the carbonate produced in the reaction tank 3 to the recovery tank 4 (recovery step). As described below, when the carbonate contained in the carbonate-containing liquid supplied to the recovery tank 4 is, for example, a water-soluble carbonate such as sodium carbonate, the device 1B can extract carbon dioxide as a gas by adding, for example, hydrochloric acid to the recovery tank 4 (Na2CO3 + 2HCl → 2NaCl + H2O + CO2). Furthermore, when the carbonate is, for example, sodium carbonate, the device 1B can produce poorly soluble calcium carbonate by adding, for example, calcium chloride to the recovery tank 4, and recover carbon dioxide as solid calcium carbonate (Na2CO3 + CaCl2 → 2NaCl + CaCO3). In this way, the device 1B can further recover carbon dioxide from the carbonate-containing liquid in the recovery tank 4. Note that the above-described recovery methods are merely examples and are not limiting. By sending the solution to the recovery tank 4, the recovery method can be performed under conditions in which the sodium hydroxide concentration used in the reaction tank 3 is maintained low in the recovery tank 4. As a result, for example, when seawater containing calcium chloride is used, the generation of Ca(OH)2 is suppressed. Therefore, the recovery method can effectively generate CaCO3, thereby improving the efficiency of carbon dioxide fixation. Therefore, in the configuration in which the solution is sent to the recovery tank 4, for example, the sodium hydroxide aqueous solution or calcium hydroxide aqueous solution used in the present apparatus 1B can be used in the reaction tank 3 at a high concentration. Therefore, the concentration of each aqueous solution is not limited to, for example, approximately 0.1 mol / L, and can also be used at a concentration of, for example, approximately 1 mol / L. Furthermore, since the solubility of sodium carbonate in water is 22 g / 100 ml (2.1 M) at 20 °C and 45 g / 100 ml (4.2 M) at 100 °C, the sodium hydroxide concentration can be further increased. Therefore, for example, the present apparatus 1B has the advantage of being able to reduce the amount of sodium hydroxide aqueous solution used.

[0043] The present device 1B of this embodiment can use, for example, high-concentration sodium hydroxide, which has the effect of significantly reducing the amount of water used when using the present device 1B.

[0044] [Embodiment 3] An example of the configuration of the carbon dioxide recovery apparatus 1C of this embodiment (hereinafter also referred to as "this apparatus 1C") will be described using Figure 3. As shown in Figure 3, this apparatus 1C includes, in addition to the configuration of this apparatus 1B of embodiment 2 (electrolysis tank 2, reaction tank 3, and recovery tank 4), for example, a liquid delivery means 15 that supplies the hydrochloric acid aqueous solution produced in the anodic electrolysis chamber 20 of the electrolysis tank 2 to the recovery tank 4. The configuration of this apparatus 1B is the same in this apparatus 1C of this embodiment, and therefore the description in embodiment 2 can be used.

[0045] 3, the apparatus 1C of this embodiment includes, for example, a liquid delivery means 15 that supplies the hydrochloric acid aqueous solution produced in the anodic electrolysis chamber 20 of the electrolysis tank 2 to the recovery tank. Note that, as with the other liquid delivery means, the shape, material, etc. of the liquid delivery means 15 are not particularly limited.

[0046] Next, an example of the carbon dioxide capture method of this embodiment will be described. The carbon dioxide capture method of this embodiment is carried out as follows, for example, using the present apparatus 1C shown in FIG. 3. Note that the carbon dioxide capture method of this embodiment is not limited to using the present apparatus 1C of FIG. 3. Furthermore, the order in which the following steps are carried out is not limited to the order described. Therefore, the carbon dioxide capture method of this embodiment may be carried out, for example, in an order different from the order described, or two or more steps may be carried out simultaneously.

[0047] First, the electrolysis step, reaction step, and chlorine gas supply step of the first embodiment are the same in this embodiment. The recovery step of the second embodiment is also the same in this embodiment. Therefore, the explanations of these steps can be used in this embodiment.

[0048] Next, the liquid delivery means 15 of this embodiment supplies the recovery tank 4 with an aqueous hydrochloric acid solution containing the hydrochloric acid produced in the anodic electrolysis chamber 20. Then, in the recovery tank 4, the apparatus 1C separates carbon dioxide gas from the carbonate-containing liquid using the aqueous hydrochloric acid solution (recovery step). As described above, in the case of a substance that dissolves in water, such as sodium carbonate, the apparatus 1C can extract carbon dioxide as a gas by adding, for example, hydrochloric acid to the recovery tank 4 (Na2CO3 + 2HCl → 2NaCl + HO + CO2).

[0049] The present device 1C of this embodiment can effectively utilize the hydrochloric acid solution produced during electrolysis, which has the effect of enabling efficient carbon dioxide recovery.

[0050] [Embodiment 4] An example of the configuration of a carbon dioxide recovery apparatus 1D of this embodiment (hereinafter also referred to as "this apparatus 1D") will be described using Figure 4. As shown in Figure 4, this apparatus 1D includes, in addition to the configuration of this apparatus 1C of embodiment 3 (electrolysis tank 2, reaction tank 3, and recovery tank 4), for example, ultraviolet irradiation means 26 in the anodic electrolysis chamber 20 of the electrolysis tank 2. The configuration of this apparatus 1C is the same in this apparatus 1D of this embodiment, so the description in embodiment 3 can be used.

[0051] 4, the anodic electrolysis chamber 20 of this embodiment includes, for example, an ultraviolet ray irradiation means 26. The ultraviolet ray irradiation means 26 irradiates, for example, the aqueous hydrochloric acid solution produced in the anodic electrolysis chamber 20 with ultraviolet rays to decompose hypochlorous acid contained in the aqueous hydrochloric acid solution and produce hydrochloric acid. The structure, shape, and position of the ultraviolet ray irradiation means 26 may be any mode as long as it can effectively irradiate the aqueous hydrochloric acid solution with ultraviolet rays.

[0052] Next, an example of the carbon dioxide capture method of this embodiment will be described. The carbon dioxide capture method of this embodiment is carried out as follows, for example, using the present apparatus 1D shown in FIG. 4. Note that the carbon dioxide capture method of this embodiment is not limited to using the present apparatus 1D of FIG. 4. Furthermore, the order in which the following steps are carried out is not limited to the order described. Therefore, the carbon dioxide capture method of this embodiment may be carried out, for example, in an order different from the order described, or two or more steps may be carried out simultaneously.

[0053] First, the electrolysis step, reaction step, and chlorine gas supply step of the first embodiment are the same in this embodiment. The recovery step of the second embodiment is also the same in this embodiment. Furthermore, the recovery step of the third embodiment is also the same in this embodiment. Therefore, these descriptions can be used in this embodiment.

[0054] Next, the ultraviolet irradiation means 26 of this embodiment decomposes the hypochlorous acid generated in the anode electrolysis chamber 20 to generate hydrochloric acid (electrolysis process). For example, when electrolyzing a sodium chloride aqueous solution in the electrolysis tank 2, the present device 1D generates chlorine gas on the anode 24 side and hydrogen gas on the cathode 25 side, generating sodium hydroxide. The chlorine gas generated on the anode 24 side reacts with water in the aqueous solution to form hydrochloric acid and hypochlorous acid (Cl + H O → HCl + HClO). Like the present device 1C of embodiment 3, the present device 1D extracts carbon dioxide as a gas in the recovery tank 4, for example, by adding hydrochloric acid to a carbonate-containing liquid. As mentioned above, the product of chlorine gas and water contains hypochlorous acid, so the concentration of hydrochloric acid is insufficient. Therefore, in this embodiment, the apparatus 1D irradiates the product hydrochloric acid solution with ultraviolet light to decompose the hypochlorous acid contained in the hydrochloric acid solution and generate hydrochloric acid (2HClO → 2HCl + O2). The effect of ultraviolet light irradiation has been confirmed experimentally. Initially, the pH of hypochlorous acid solution (50 ml) with a concentration of 1000 ppm was 6.66, but after 15 minutes of irradiation with a UV light (manufactured by Tomoyo), the pH decreased to 6.30. After another 15 minutes of irradiation, the pH decreased to 6.11 and remained constant thereafter. Therefore, by irradiating with ultraviolet light, the apparatus 1D can convert hypochlorous acid to hydrochloric acid, producing an aqueous solution with a high hydrochloric acid concentration, which can then be sent from the anodic electrolysis chamber 20 to the recovery tank 4.

[0055] The device 1D of this embodiment can increase the concentration of hydrochloric acid in the aqueous hydrochloric acid solution produced by electrolysis, which has the effect of efficiently capturing carbon dioxide.

[0056] [Embodiment 5] An example of the configuration of the carbon dioxide recovery apparatus 1E of this embodiment (hereinafter also referred to as "the apparatus 1E") will be described using Figure 5. As shown in Figure 5, the apparatus 1E includes, in addition to the configuration of the apparatus 1C of embodiment 3 (electrolysis tank 2, reaction tank 3, and recovery tank 4), for example, a liquid delivery means 18 that delivers the metal salt aqueous solution produced in the recovery tank 4 to the electrolysis tank 2. The configuration of the apparatus 1C is the same in the apparatus 1E of this embodiment, so the description in embodiment 3 can be used. Furthermore, the apparatus 1E may include the configuration of the apparatus 1D of embodiment 4.

[0057] As shown in Figure 5, the apparatus 1E of this embodiment includes, for example, a liquid delivery means 18 that delivers the metal salt aqueous solution produced in the recovery tank 4 to the electrolysis tank 2. As with the other liquid delivery means, the shape and material of the liquid delivery means 18 are not particularly limited. In Figure 5, the liquid delivery means 18 is integrated with the liquid delivery means 18 for supplying the metal salt aqueous solution to the electrolysis tank 2 of embodiment 1, but this is not limiting. Therefore, a liquid delivery means for supplying the metal salt aqueous solution from outside may be provided separately from the liquid delivery means 18 of this embodiment.

[0058] Next, an example of the carbon dioxide capture method of this embodiment will be described. The carbon dioxide capture method of this embodiment is carried out as follows, for example, using the present apparatus 1E shown in FIG. 5. Note that the carbon dioxide capture method of this embodiment is not limited to using the present apparatus 1E of FIG. 5. Furthermore, the order in which the following steps are carried out is not limited to the order described. Therefore, the carbon dioxide capture method of this embodiment may be carried out, for example, in an order different from the order described, or two or more steps may be carried out simultaneously.

[0059] First, the electrolysis step, reaction step, and chlorine gas supply step of the first embodiment are the same in this embodiment. The recovery step of the second embodiment is also the same in this embodiment. Furthermore, the recovery step of the third embodiment is also the same in this embodiment. Therefore, these explanations can be used in this embodiment. Furthermore, if the configuration of the fourth embodiment is included, the explanation in the fourth embodiment can also be used.

[0060] Next, the liquid delivery means 18 of this embodiment supplies, to at least one of the anodic electrolysis chamber 20 and the cathodic electrolysis chamber 21, an aqueous metal salt solution produced by decomposing the carbonate-containing liquid in the recovery tank 4 to generate carbon dioxide gas (aqueous metal salt solution supply step). The recovery tank 4 generates carbon dioxide gas and produces an aqueous metal salt solution by reacting the carbonate-containing liquid with hydrochloric acid. For example, when the carbonate-containing liquid is sodium carbonate, the recovery tank 4 generates carbon dioxide and produces sodium chloride (NaCO + 2HCl → 2NaCl + HO + CO). The aqueous metal salt solution produced in this manner is delivered to the electrolysis tank 2 by the liquid delivery means 18. In FIG. 5, the electrolysis tank 2 is completely partitioned from top to bottom by a diaphragm 100, as in FIG. 1 relating to the first embodiment. However, as in the first embodiment, the present invention is not limited to this. For example, when the electrolytic cell 2 is not partitioned down to the bottom but is connected at the lower part, the supply of the metal salt aqueous solution by the liquid supply means 18 may be, for example, a method in which the metal salt aqueous solution is injected into the lower part of the electrolytic cell 2 and supplied to at least one of the anodic electrolysis chamber 20 and the cathodic electrolysis chamber 21.

[0061] The present device 1E of this embodiment is capable of reusing the aqueous solution after carbon dioxide recovery, which has the effect of enabling continuous and sustained carbon dioxide recovery when used with the present device 1E.

[0062] [Embodiment 6] An example of the configuration of the carbon dioxide capture apparatus 1F of this embodiment (hereinafter also referred to as "this apparatus 1F") will be described using Figure 6. This apparatus 1F includes, in addition to the configuration of each of the carbon dioxide capture apparatuses of Embodiments 1 to 5, for example, a liquid delivery means 29 for supplying seawater to the electrolysis tank 2. The configurations of Embodiments 1 to 5 are the same for this apparatus 1F of this embodiment, so these descriptions can be used. Note that Figure 6 is a schematic diagram of the carbon dioxide capture apparatus according to Figure 3, including the configuration added in this embodiment.

[0063] 6, the apparatus 1F of this embodiment includes, for example, a liquid supplying means 29 for supplying seawater to the electrolysis tank 2. Note that, as with the other liquid supplying means, the shape, material, etc. of the liquid supplying means 29 are not particularly limited.

[0064] The carbon dioxide capture method of this embodiment is similar to the carbon dioxide capture methods of Embodiments 1 to 5, except that it is carried out by supplying seawater to the electrolysis cell 2 using, for example, the present apparatus 1F shown in FIG. 6. Seawater is supplied to at least one of the anodic electrolysis chamber 20 and the cathodic electrolysis chamber 21 using the liquid supply means 29. As in the case of supplying the metal salt aqueous solution in Embodiment 5, depending on the structure of the electrolysis cell 2, seawater may be supplied, for example, by being injected into the lower part of the electrolysis cell. As in the other embodiments, the order in which each step is performed is not limited.

[0065] The device 1F of this embodiment is capable of capturing carbon dioxide using seawater. If the device 1F is mounted on a large tanker, it can electrolyze seawater to obtain electricity and hydrogen, fix carbon dioxide, and produce calcium carbonate using calcium ions in the seawater.

[0066] [Embodiment 7] An example of the configuration of the carbon dioxide capture apparatus 1G of this embodiment (hereinafter also referred to as "this apparatus 1G") will be described using Figure 7. In addition to the configuration of each carbon dioxide capture apparatus of embodiment 2 or 3, this apparatus 1G includes, for example, a liquid supply means 41 for supplying seawater to the capture tank 4. The configuration of embodiment 2 or 3 is also the same for this apparatus 1G of this embodiment, so these descriptions can be used. Note that Figure 7 is a schematic diagram of the carbon dioxide capture apparatus configuration of Figure 3, including the configuration added in this embodiment. Furthermore, the configuration of embodiment 6 may be added to this embodiment.

[0067] 7, the device 1G of this embodiment includes, for example, a liquid delivery means 41 for supplying seawater to the collection tank 4. Note that, as with the other liquid delivery means, the shape, material, etc. of the liquid delivery means 41 are not particularly limited.

[0068] The carbon dioxide capture method of this embodiment is similar to the carbon dioxide capture method of embodiment 2 or 3, except that it is carried out by using, for example, the present apparatus 1G shown in Fig. 7 and supplying seawater to the capture tank 4. As with the other embodiments, the order in which the steps are carried out is not limited. Furthermore, it may also include the steps of embodiment 6.

[0069] In the present embodiment, the apparatus 1G takes in seawater into the collection tank 4, and generates calcium carbonate, for example, by a reaction between the carbonate generated in the reaction tank 3 and calcium chloride contained in the seawater. For example, calcium carbonate is poorly soluble and precipitates in a solid state at the bottom of the collection tank 4. The present apparatus 1G can then recover carbon dioxide by recovering the precipitate. For example, if the carbonate is sodium carbonate, the present apparatus 1G can generate calcium carbonate in the collection tank 4 by adding calcium chloride contained in seawater, for example, and recover carbon dioxide as solid calcium carbonate (Na2CO3 + CaCl2 → 2NaCl + CaCO3). Note that the above example is merely an example and is not limiting.

[0070] Like the present device 1F of embodiment 6, the present device 1G of this embodiment can be loaded onto a large tanker to electrolyze seawater, obtain electricity and hydrogen, fix carbon dioxide, and produce calcium carbonate using calcium ions in the seawater.

[0071] [Embodiment 8] An example of the configuration of a carbon dioxide capture device 1H of this embodiment (hereinafter also referred to as "this device 1H") will be described using FIG. 8. This device 1H includes, for example, a fuel cell power generation device 30 in addition to the configuration of each carbon dioxide capture device of embodiments 1 to 7. The configurations of embodiments 1 to 7 are also the same for this device 1H of this embodiment, so these descriptions can be used. Note that FIG. 8 is a schematic diagram of the carbon dioxide capture device configuration of FIG. 3, including the configuration added in this embodiment.

[0072] As shown in FIG. 8 , the apparatus 1H of this embodiment includes, for example, the fuel cell power generation device 30 and a gas delivery means 13 for supplying hydrogen gas generated in the cathode electrolysis chamber 21 to the fuel cell power generation device 30. The fuel cell power generation device 30 is an apparatus that generates electricity using hydrogen generated as a result of electrolysis in the cathode electrolysis chamber 21 of the electrolysis cell 2. The fuel cell power generation device 30 may also be capable of supplying electricity to the anode 24 and the cathode 25 provided in the electrolysis cell 2. The fuel cell power generation device 30 may have any shape and structure as long as it is capable of generating electricity using hydrogen. The shape, material, etc. of the gas delivery means 13 are not particularly limited, as are the other gas delivery means.

[0073] The carbon dioxide capture method of this embodiment is similar to the carbon dioxide capture methods of Embodiments 1 to 7, except that, for example, the present apparatus 1H shown in Fig. 8 is used to generate electricity by utilizing hydrogen produced as a result of electrolysis in the cathode electrolysis chamber 21 of the electrolysis tank 2. As with the other embodiments, the order in which the steps are performed is not limited.

[0074] The gas supply means 13 of this embodiment supplies the hydrogen gas generated in the cathode electrolysis chamber 21 to the fuel cell power generation device 30 (fuel cell power generation step). The fuel cell power generation device 30 generates electricity using the hydrogen supplied by the gas supply means 13. The fuel cell power generation device 30 may also supply the generated electricity to the anode 24 and the cathode 25 provided in the electrolysis tank 2.

[0075] The device 1H of this embodiment can effectively utilize the hydrogen gas generated during electrolysis.

[0076] [Embodiment 9] An example of the configuration of a carbon dioxide capture device 1I of this embodiment (hereinafter also referred to as "this device 1I") will be described using Figure 9. 1I includes, for example, a solar power generation device 31 in addition to the configuration of each carbon dioxide capture device of embodiments 1 to 8. The configurations of embodiments 1 to 8 are the same for this device 1I of this embodiment, so these descriptions can be used. Note that Figure 9 is a schematic diagram of the carbon dioxide capture device configuration of Figure 3, including the configuration added in this embodiment.

[0077] 9, the device 1I of this embodiment includes, for example, the solar power generation device 31 that can supply electricity to the anode 24 and the cathode 25. The solar power generation device 31 may have any shape and structure as long as it can supply electricity to the anode 24 and the cathode 25.

[0078] In the carbon dioxide recovery method of the present embodiment, for example, the present apparatus 1I shown in Fig. 9 is used to supply electricity to the anode 24 and the cathode 25 provided in the electrolysis tank 2. Except for the points described above, the carbon dioxide recovery method of the present embodiment is the same as the carbon dioxide recovery methods of Embodiments 1 to 8. Also, as in the other embodiments, the order in which each step is performed is not limited.

[0079] The device 1I of this embodiment enables carbon dioxide recovery using renewable energy.

[0080] Below, a specific example of a carbon dioxide capture apparatus and a carbon dioxide capture method according to the present disclosure will be shown using Figure 10. Note that the following explanation is an example of specific content, and as mentioned above, the carbon dioxide capture apparatus and the carbon dioxide capture method according to the present disclosure are not limited to the following explanation. Furthermore, the carbon dioxide capture apparatus and the carbon dioxide capture method according to the present disclosure do not have to include all of the configurations described in the following explanation, and may include additional configurations. Furthermore, the carbon dioxide capture method according to the present disclosure is not limited to the use of the carbon dioxide capture apparatus (hereinafter also referred to as "the present apparatus 1J") in the following explanation.

[0081] This device 1J is a device that introduces air containing carbon dioxide through an air inlet path (gas supply means 19), separates the carbon dioxide inside, reduces the carbon dioxide concentration to zero or significantly reduces it, and discharges it to the outside through an air outlet path (gas supply means 12).It is intended to be applied to facilities of various sizes, from large-scale facilities that continuously discharge large amounts of combustion gas, such as thermal power plants, to small-scale facilities such as homes and offices.

[0082] The present apparatus 1J is provided with: an electrolysis tank 2 having an anode 24 and a cathode 25 inside a rectangular hollow housing 10, which produces an aqueous solution containing sodium hydroxide and hydrogen chloride by electrolyzing an introduced aqueous solution of sodium chloride; a reaction tank 3 into which the aqueous solution of sodium hydroxide produced on the cathode 25 side is introduced via a pipe (liquid delivery means 16) and air containing carbon dioxide is introduced via an air introduction path (gas delivery means 19) to be sprayed and bubbled in the aqueous solution of sodium hydroxide from a bubble generator 191, thereby producing an aqueous solution containing sodium carbonate and sodium hydrogen carbonate; and a recovery tank 4 into which the produced aqueous solution containing sodium carbonate and the like is introduced via a pipe (liquid delivery means 17), and an aqueous solution containing hydrogen chloride is introduced via a pipe (liquid delivery means 15) to mix the aqueous solution, thereby extracting gaseous carbon dioxide from a carbon dioxide discharge path (gas delivery means 11).

[0083] The present device 1J is configured such that ultraviolet lights (ultraviolet light irradiation means 26a, 26b) are installed as ultraviolet light irradiation means for irradiating the aqueous solution containing hydrogen chloride with ultraviolet light above the portion of the electrolysis tank 2 that stores the aqueous solution, and the hypochlorous acid contained in the aqueous solution electrolyzed on the anode 24 side is decomposed to generate hydrogen chloride, thereby increasing the concentration of hydrogen chloride, which is then introduced into the recovery tank 4 via piping (liquid delivery means 15).

[0084] That is, for example, by adopting a configuration in which ultraviolet light (ultraviolet light irradiation means 26a, 26b) is used to irradiate an aqueous solution containing hydrogen chloride generated on the anode 24 side of the electrolysis tank 2 with ultraviolet light, the hypochlorous acid contained in the aqueous solution can be converted into hydrogen chloride, and the resulting aqueous solution can be introduced into the recovery tank 4. Therefore, the present apparatus 1J efficiently converts carbon dioxide into a gaseous state and separates it, while producing an aqueous sodium chloride solution that can be recycled. Furthermore, by separating the reaction tank 3 and the recovery tank 4, the present apparatus can perform treatment continuously in each tank, and can recycle the aqueous solution used for treatment without having to replace it, thereby increasing the operating efficiency of the apparatus.

[0085] On the other hand, the electrolysis tank 2 has a space partitioned by a vertically extending partition wall 100 on the anode 24 side and the cathode 25 side thereof from near the bottom side in the vertical direction to a position reaching the top wall, forming an anode electrolysis chamber 20 and a cathode electrolysis chamber 21, each of which has a space on the upper side for storing gas, and the sodium chloride aqueous solution (brine) generated in the recovery tank 4 is introduced from the bottom side thereof via piping (liquid delivery means 18) into the bottom sides of the anode electrolysis chamber 20 and the cathode electrolysis chamber 21, respectively.

[0086] The inlet of the pipe (liquid supply means 16) that sends the aqueous sodium hydroxide solution from the cathodic electrolysis chamber 21 to the reaction tank 3, and the inlet of the pipe (liquid supply means 15) that sends the aqueous solution containing hydrogen chloride from the anodic electrolysis chamber 20 to the recovery tank 4, each open to the upper side of the aqueous solution storage section. This makes it possible for the present apparatus to continuously introduce the aqueous sodium chloride solution produced in the recovery tank 4 into the electrolysis tank 2 while minimizing the mixing of unelectrolyzed aqueous sodium chloride solution with the electrolyzed aqueous solution and introducing it into the next tank, thereby enabling continuous operation of the apparatus.

[0087] In the electrolysis tank 2 described above, heat is generated on the surfaces of the anode 24 and the cathode 25 due to electrolysis, causing the temperatures of the aqueous solution containing hypochlorous acid and hydrogen chloride and the aqueous solution containing sodium hydroxide produced by electrolysis to rise. Furthermore, the heat from the ultraviolet light (ultraviolet light irradiation means 26a, 26b) disposed above the anode 24 also adds to the thermal expansion of the aqueous solutions, causing them to rise to the top of the tank. Therefore, the present device 1J further enhances the state in which non-electrolyzed sodium chloride aqueous solution is less likely to mix with the electrolyzed aqueous solution and be sucked in through the suction ports of the piping (liquid delivery means 15, 16). Furthermore, the partition wall 100, which divides the space of the electrolysis tank 2 into left and right compartments, is made of a hard, impermeable material and has an open lower end that connects the anodic electrolysis chamber 20 and the cathodic electrolysis chamber 21. However, a semipermeable membrane may be used for this partition wall 100, in which case the left and right spaces of the electrolysis tank 2 may be completely separated.

[0088] In addition, in the anode electrolysis chamber 20 of the present device 1J, a pipe (gas delivery means 22) is connected which extends from the upper space for storing gas to the lower side of the part for storing the aqueous solution, and the chlorine gas generated by electrolysis and accumulated in the upper space is transported to the lower side by a pump 122 and bubbled in the aqueous solution via a bubble generator 123, thereby dissolving the chlorine gas in the aqueous solution.

[0089] As a result, dangerous chlorine gas generated by electrolysis on the anode 24 side and stored in the upper space can be repeatedly sprayed out from the bottom side of the stored aqueous solution and dissolved, and most of it can be converted into a relatively safe liquid state (hydrochloric acid).Therefore, this device 1J can perform electrolysis with sufficient output without considering the amount of chlorine gas generated while ensuring the safety of the device, and can produce sodium hydroxide of a sufficient concentration on the cathode 25 side.

[0090] The top wall of the anodic electrolysis chamber 20 is provided with an oxygen discharge channel (gas delivery means 14) for discharging oxygen, and the top wall of the cathodic electrolysis chamber 21 is provided with a hydrogen discharge channel (gas delivery means 13) for discharging hydrogen. The discharged oxygen and hydrogen can be stored in a designated container or the like and used for various purposes. For example, although not shown, this device can be equipped with a fuel cell power generation means that uses hydrogen gas as fuel for power generation, and the generated electricity can be used for at least part of the power required to operate the device. In this case, the running costs of the device can be further reduced. The device may also be powered by solar power, which can further reduce running costs.

[0091] Furthermore, although not shown in the figures, if the above-mentioned device 1J is provided with a pH meter in each tank and with electronic control means having a microcomputer and a memory storing operation control software, and if the electronic control means detects the pH level of each tank and operates the pumps 151, 161, 171, 181, 122 provided in the piping (liquid supply means 15, 16, 17, and 18, and gas supply means 22) and the solenoid valves and ultraviolet lights (ultraviolet irradiation means 26a, 26b) provided in each passage by feedback control, then the device 1J will be able to operate almost automatically and continuously.

[0092] When operating the present apparatus 1J for the first time, it is preferable to store a sodium chloride aqueous solution (brine) of a predetermined concentration in the electrolysis tank 2 up to a predetermined water level via the brine inlet path (liquid supply means 29), and to introduce and store a sodium hydroxide aqueous solution in the reaction tank 3 up to a predetermined water level using the air exhaust path (gas supply means 12) and the carbon dioxide exhaust path (gas supply means 11), and to introduce and store a sodium chloride aqueous solution in the recovery tank 4 up to a predetermined water level.

[0093] Next, the present apparatus 1J energizes the anode 24 and the cathode 25 to start electrolysis, while turning on the ultraviolet lamps (ultraviolet irradiation means 26a, 26b) in the anode electrolysis chamber 20 and driving the pump 122 of the piping (gas delivery means 22). At the same time, the present apparatus 1J starts introducing carbon dioxide-containing air (the object to be treated) into the reaction tank 3 via the air introduction path (gas delivery means 19) and the air bubble generator 191.

[0094] When a pH meter (not shown) located above the aqueous solution storage portion of the cathode electrolysis chamber 25 detects that the basicity of the aqueous solution has reached a predetermined level, the device 1J drives the pump 161 of the piping (liquid delivery means 16) to introduce an aqueous sodium hydroxide solution into the reaction tank 3, and when a pH meter (not shown) located above the aqueous solution storage portion of the anode electrolysis chamber 24 detects that the acidity of the aqueous solution has reached a predetermined level, the device 1J drives the pump 151 of the piping (liquid delivery means 15) to introduce an aqueous hydrogen chloride solution (hydrochloric acid) into the recovery tank 4.

[0095] On the other hand, in this apparatus 1J, when a pH meter (not shown) located above the aqueous solution storage portion of the reaction tank 3 detects that the basicity of the aqueous solution has dropped to a predetermined level, the pump 171 of the pipe (liquid delivery means 17) is driven to introduce an aqueous solution containing sodium carbonate and sodium bicarbonate into the recovery tank 4, and sodium chloride is produced by reacting it with hydrogen chloride introduced through the pipe (liquid delivery means 15). At the same time, carbon dioxide produced by the reaction is separated in a gaseous state and accumulated in the upper space. The separated carbon dioxide is then discharged to the outside via the carbon dioxide discharge path (gas delivery means 11) and stored in a predetermined storage means, and the remaining sodium chloride aqueous solution is pumped out by driving the pump 181 of the pipe (liquid delivery means 18) by the amount corresponding to the rise in the water level and introduced into the bottom of the electrolysis tank 2 for reuse.

[0096] After that, the aqueous solution in each tank of this device 1J is circulated and generated / used, so it is possible to continue operating the device with almost no need to replenish materials, and the running costs of the device can be kept low.However, since the water level decreases due to the hydrogen and oxygen emitted by electrolysis and the evaporation of water, etc., water must be replenished in this device as needed.

[0097] The inventors of this application have confirmed through experiments that hypochlorous acid, generated along with hydrogen chloride on the anode 24 side by electrolysis, is decomposed to hydrogen chloride by ultraviolet irradiation (2HClO → 2HCl + O2). Specifically, hypochlorous acid water (50 ml) initially having a concentration of 1000 ppm had a pH of 6.66, but after 15 minutes of irradiation with a UV light (manufactured by Tomoyo), the pH dropped to 6.30. After another 15 minutes of irradiation, the pH dropped to 6.11 and remained constant thereafter. Therefore, it can be seen that the device 1J converts hypochlorous acid in the solution storage section into hydrogen chloride by irradiating it with ultraviolet light (ultraviolet light irradiation means 26a, 26b) in the anode electrolysis chamber 20, while producing an aqueous solution with a high hydrochloric acid concentration and low pH, which is then discharged.

[0098] In the present apparatus 1J, the method of producing sodium carbonate and sodium hydrogencarbonate by bubbling air containing carbon dioxide in the introduced aqueous sodium hydroxide solution in the reaction tank 3 has been described, but the same method can be used in which the introduced aqueous sodium hydroxide solution is turned into mist and mixed with the air containing carbon dioxide. Also, the same method can be carried out by using an aqueous potassium chloride solution instead of an aqueous sodium chloride solution.

[0099] Another specific example of the device will be described below using Figure 11. Note that the following explanation is an example of specific content, and as mentioned above, the device and carbon dioxide capture method according to the present disclosure are not limited to the following explanation.

[0100] The carbon dioxide recovery device in the following description (hereinafter also referred to as "this device 1K") is a carbon dioxide recovery device that uses the same configuration as the above-mentioned specific example, but is configured such that, for example, a hydrochloric acid discharge path (liquid delivery means 35) for discharging an aqueous solution containing hydrochloric acid and hypochlorous acid into a pipe (liquid delivery means 15) is branched off via an electromagnetic valve, a seawater inlet path (liquid delivery means 41) for introducing seawater or the like is provided on the upper side of the recovery tank 4, and a filter 45 for capturing solid matter that has fixed carbon dioxide is added on the bottom side of the seawater inlet path (liquid delivery means 41).

[0101] The present apparatus 1K shown in Figure 11 attempts to recover carbon dioxide in a solid state, rather than separating it in a gaseous state and storing or using it outside the apparatus. Specifically, the aqueous solution containing hydrogen chloride produced in the anodic electrolysis chamber 20 is not used, but is instead discharged through the hydrochloric acid discharge line (liquid supply means 35). Instead, seawater or calcium chloride (CaCl2) is introduced into the recovery tank 4 through the seawater inlet line (liquid supply means 41). In other words, in the recovery tank 4, hydrogen chloride (HCl) is added to sodium carbonate (Na2CO3) and sodium bicarbonate (NaHCO3) (carbonates) in the present apparatus 1J of the previous example, whereas seawater or calcium chloride (CaCl2) is added to the recovery tank 4. Adding seawater results in, for example, magnesium carbonate (MgCO3) and calcium carbonate (CaCO3), and adding calcium chloride (CaCl2) results in calcium carbonate (CaCO3). The compounds (magnesium carbonate, calcium carbonate, etc.) produced in the recovery tank 4 are precipitated in the aqueous solution in a solid state. As a result, the device 1K can recover carbon dioxide as a solid compound. Furthermore, calcium carbonate is extremely poorly soluble in water and is harmless, enabling the safe and reliable recovery of carbon dioxide.

[0102] In the prior art, in which seawater is electrolyzed to fix carbon dioxide, a large amount of magnesium hydroxide (Mg(OH)2) is initially produced by direct treatment with an aqueous sodium hydroxide solution, which prevents the treatment of the carbonate-containing liquid with seawater and hinders the recovery of carbon dioxide as a compound that precipitates in the aqueous solution. However, in the present device 1K, the carbonate-containing liquid produced by mixing carbon dioxide with sodium hydroxide is treated, so the aforementioned problems do not occur.

[0103] For example, in conventional carbon dioxide fixation methods using aqueous sodium hydroxide and calcium ions, as mentioned above, high sodium hydroxide concentrations hinder carbon dioxide fixation because the aqueous sodium hydroxide and calcium ions tend to react first. Therefore, the sodium hydroxide concentration must be kept, for example, at 0.2 mol / L or less. Therefore, conventional carbon dioxide fixation requires a large amount of water. In contrast, the carbon dioxide capture method disclosed herein does not suffer from the same problems as conventional methods, as mentioned above, allowing for a higher sodium hydroxide concentration. For example, the concentration may be 1 mol / L, but is not limited to this. As a result, the amount of water used for carbon dioxide fixation can be significantly reduced. Furthermore, the method of turning sodium hydroxide into mist in the treatment of the reaction tank 3 can further reduce the amount of water required. Furthermore, by utilizing an empty warehouse, a giant dome, a cave, a tunnel, or an abandoned mine to expand the reaction space of the reaction tank 3, large-scale carbon dioxide fixation can be achieved inexpensively.

[0104] If the carbon dioxide capture device according to the present disclosure is mounted on a large tanker, the carbon dioxide capture device can electrolyze seawater to obtain electricity and hydrogen, fix carbon dioxide, and use calcium ions in the seawater to produce calcium carbonate. Furthermore, by combining the use of hydrogen gas generated by electrolysis and solar power generation, more stable carbon dioxide capture operations can be performed even on a large tanker. Furthermore, as mentioned above, the calcium carbonate produced is extremely insoluble and harmless, so it can be released deep into the ocean. While the transportation and storage of captured carbon dioxide have been problematic, the carbon dioxide capture device according to the present disclosure can solve this problem. Furthermore, using the vast land unused due to the nuclear accident as a tanker would contribute to solving the problem of global warming and could also be used to revitalize areas affected by the nuclear accident.

[0105] [Embodiment 10] Next, an example of a resin composition production system shown in FIG. 12 will be described. As shown in the figure, this system is composed of a carbon dioxide capture device (inorganic material production device) 1000 and a resin composition production device 1010. Inorganic materials such as metal salts (calcium carbonate CaCO3, magnesium hydroxide Mg(OH)2), etc. are supplied from the carbon dioxide capture device 1000 to the resin composition production device 1010. In addition, a resin is supplied to the resin composition production device 1010. In a mixing section (not shown) of the resin composition production device 1010, the inorganic material, resin, and various additives as needed are mixed to produce a resin composition. The resin composition production device 1010 may have a molding section (molding section) for the resin composition.

[0106] (Composition of Resin Composition) In the resin composition of the present disclosure, the resin is not particularly limited, and examples thereof include thermoplastic resins and thermosetting resins.

[0107] The composition of the resin composition of the present disclosure is not particularly limited, but when the inorganic material is calcium carbonate particles, the mass ratio of the calcium carbonate particles to the thermoplastic resin (calcium carbonate particles:thermoplastic resin) is preferably 50:50 to 90:10, more preferably 60:40 to 80:20, and even more preferably 60:40 to 70:30.

[0108] The type of thermoplastic resin is not particularly limited, but is preferably a polypropylene resin and / or a polyethylene resin (low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, etc.).

[0109] The upper limit of the content of calcium carbonate particles is preferably 90.0 mass % relative to the resin composition. % by mass or less, and more preferably 80.0% by mass or less.

[0110] The lower limit of the content of calcium carbonate particles is preferably 50.0% by mass or more, and more preferably 60.0% by mass or more, based on the resin composition.

[0111] The upper limit of the content of the thermoplastic resin is preferably 50.0% by mass or less, and more preferably 40.0% by mass or less, based on the resin composition.

[0112] The lower limit of the content of the thermoplastic resin is preferably 10.0% by mass or more, and more preferably 20.0% by mass or more, based on the resin composition.

[0113] (Other components in the resin composition) The resin composition of the present disclosure may further contain optional components. Such components may be used alone or in combination of two or more. The types and amounts of such components may be appropriately determined depending on the desired effects, etc.

[0114] Components that can be contained in the resin composition of the present disclosure include plasticizers, resins other than thermoplastic resins, fillers, colorants, lubricants, antioxidants, flame retardants, and foaming agents.

[0115] <Method of manufacturing resin composition> The resin composition of the present disclosure can be produced using the above components based on a conventionally known method for producing a resin composition.

[0116] The resin composition can be obtained, for example, by mixing and melt-kneading the components. The timing of mixing and melt-kneading can be appropriately set depending on the molding method to be adopted (extrusion molding, injection molding, vacuum molding, etc.). For example, mixing may be performed before charging from the hopper of a molding machine or simultaneously with molding. For example, melt-kneading may be performed using a twin-screw kneader or the like.

[0117] The resin composition of the present disclosure may be in the form of, for example, pellets of any size and shape.

[0118] The shape of the pellets may be, for example, cylindrical, spherical, or oval.

[0119] The size of the pellets is not particularly limited. For example, spherical pellets may have a diameter of 1 to 10 mm. Elliptical pellets may have an aspect ratio of 0.1 to 1.0 and length and width of 1 to 10 mm. Cylindrical pellets may have a diameter of 1 to 10 mm and a length of 1 to 10 mm.

[0120] The resin composition of the present disclosure can be dried as needed and then molded to obtain a desired molded article. Examples of molding methods include inflation molding, extrusion molding, injection molding, foam injection molding, injection compression molding, blow molding, press molding, calendar molding, and vacuum molding. Examples of molded products include films, sheets, fibrous products, containers (food containers, etc.), daily necessities, automobile parts, electrical and electronic parts, various consumables, etc. When using Mg(OH)2 as an inorganic material, it can be mixed with a resin, or, since Mg(OH)2 is in a colloidal or gel state (agar-like), it can be molded itself and dried as needed to produce a product.

[0121] [Embodiment 11] An example of a carbon dioxide capture device of this system is shown in Fig. 13. In this embodiment, the same parts as those of other embodiments are incorporated by reference.

[0122] As shown in Figure 13, this system includes an electrolysis tank 2, a first reaction tank 3a, a second reaction tank 3c, a third reaction tank 3b, a fuel cell power generation device (fuel battery) 30, and a solar panel power generation device (solar panel) 31. The electrolysis tank 2 has an anode electrolysis chamber 20 and a cathode electrolysis chamber 21 formed by a diaphragm 100, with an anode 24 disposed in the anode electrolysis chamber 20 and a cathode disposed in the cathode electrolysis chamber 25. Electricity is supplied to the anode 24 and the cathode 25 from the fuel cell power generation device 30 and the solar panel power generation device 31, respectively. Seawater can be supplied to the electrolysis tank 2, and sodium chloride (NaCl) contained in the seawater is electrolyzed to produce sodium hydroxide (NaOH) and hydrochloric acid (HCl). The first reaction vessel 3a is supplied with the sodium hydroxide produced in the electrolysis vessel 2 and air containing carbon dioxide (CO2), where the sodium hydroxide and carbon dioxide react to produce sodium carbonate (Na2CO3). The second reaction vessel 3c is supplied with the sodium carbonate produced in the first reaction vessel 3a and seawater, where calcium chloride contained in the seawater reacts with the sodium carbonate to produce calcium carbonate, which precipitates. Sodium chloride is also produced in the second reaction vessel 3c, and this sodium chloride is supplied to the electrolysis vessel 2. The third reaction vessel 3b is supplied with hydrochloric acid from the electrolysis vessel 2 and sodium carbonate from the first reaction vessel 3a, where the sodium carbonate reacts with the hydrochloric acid to produce carbon dioxide and sodium chloride. The produced sodium chloride is supplied to the electrolysis vessel 2 and used to produce sodium hydroxide. Hydrogen (H2) produced in the cathode chamber of the electrolysis vessel 2 is supplied to the fuel cell power generation system 30 and used to generate electricity.

[0123] The device of this embodiment uses a solar electric power generation device 31 to perform electrolysis using inexhaustible sunlight, and the hydrogen generated by electrolysis can be used to generate electricity in a fuel cell power generation device. As such, the device of this embodiment is a device that can recover carbon dioxide using sunlight and by-product hydrogen, and can also produce calcium carbonate salt, which is a resin filler, and is therefore clean (has low environmental impact) and has low operating costs.

[0124] [Embodiment 12] In the system of the present disclosure, gas generated during the production of hydrogen gas may be used as the carbon dioxide-containing gas. To obtain hydrogen gas, high-temperature steam is applied to lignite to generate a mixed gas of carbon dioxide and hydrogen, and the hydrogen gas is separated from the mixed gas, thereby obtaining hydrogen gas. If the mixed gas is used as the gas to be used in the carbon dioxide capture device 1000 of the system of this embodiment, only the carbon dioxide is captured, and it becomes possible to separate the hydrogen gas. Currently, the treatment of carbon dioxide is an issue in the production of hydrogen gas using lignite, and burying it on the seabed or underground is being considered, but if the mixed gas is used in the carbon dioxide capture device of this embodiment, the carbon dioxide problem can be solved.

[0125] There is a technology for fixing carbon dioxide using amines, but the system disclosed herein replaces this technology, and the system disclosed herein makes it possible to produce a resin composition using an inorganic material that recovers and purifies carbon dioxide.

[0126] In the system of the present disclosure, biomass gas generated from biomass can be used as the carbon dioxide-containing gas to be supplied to the carbon dioxide capture unit. The biomass gas contains carbon dioxide and hydrocarbons such as methane, and by supplying the biomass gas to the carbon dioxide capture unit, the carbon dioxide can be captured and the hydrocarbons can be separated.

[0127] When seawater is used in the carbon dioxide capture device of the system of the present disclosure, the calcium concentration may be low. In this case, the seawater may be concentrated using a reverse osmosis membrane before use. [Industrial Applicability]

[0128] As described above, the present disclosure enables the effective use of abundant resources such as seawater and contributes to reducing carbon dioxide emissions. Therefore, the present disclosure is particularly useful for, for example, the effective use of resources, resource recycling, and global warming countermeasures. [Explanation of symbols]

[0129] 1A to 1K Carbon Dioxide Capture Unit 2. Electrolysis tank 3. Reactor 4. Collection tank 10. Cabinet 11-14, 19, 22 Gas delivery means 15-18, 29, 35, 41 Liquid delivery means 20 Anodic electrolysis chamber 21 Cathode electrolysis chamber 24 Anode 25 Cathode 26a,26b Ultraviolet irradiation means 30 Fuel cell power generation equipment 31 Solar power generation equipment 100 Bulkhead 122,151,161,171,181 Pump F Filter 1000 Carbon dioxide recovery equipment (inorganic material manufacturing equipment) 1010 Resin composition manufacturing equipment

Claims

1. The carbon dioxide recovery device and the resin composition production device are included. The carbon dioxide capture device The apparatus includes an electrolysis tank, a first reaction tank, a second reaction tank, a liquid delivery means, a gas delivery means, and a recovery tank, the electrolysis cell includes a diaphragm, an anode, and a cathode; an anode electrolysis chamber and a cathode electrolysis chamber are provided in the electrolysis tank by the diaphragm; The anode is placed in the anodic electrolysis chamber, The cathode is disposed in the cathodic electrolysis chamber; an aqueous sodium salt solution can be supplied to both the anodic electrolysis chamber and the cathodic electrolysis chamber by the liquid supply means; In the cathodic electrolysis chamber, an aqueous sodium hydroxide solution is generated by electrolysis; The sodium hydroxide aqueous solution can be delivered to the first reaction tank by the delivery means, In the first reaction tank, the gas supply means can supply a carbon dioxide-containing gas into the aqueous sodium hydroxide solution, carbon dioxide in the carbon dioxide-containing gas reacts with sodium in the sodium hydroxide aqueous solution to produce sodium carbonate; the second reaction tank is capable of supplying the sodium carbonate salt-containing aqueous solution from the first reaction tank and also capable of supplying an aqueous calcium chloride solution containing calcium chloride by the liquid supply means; the sodium carbonate salt reacts with the calcium chloride to produce calcium carbonate salt, a calcium carbonate salt-containing liquid containing the calcium carbonate salt can be supplied to the recovery tank by the liquid supply means, In the recovery tank, the calcium carbonate salt is recovered as a resin additive, The resin composition manufacturing apparatus includes a mixing unit, In the mixing section, the resin additive and the resin are mixed to produce a resin composition. A resin composition manufacturing system that uses carbon dioxide.

2. Seawater is used as the sodium salt aqueous solution and the calcium chloride aqueous solution. The resin composition production system according to claim 1.

3. the seawater contains sodium chloride, calcium chloride, and magnesium chloride; the seawater can be supplied to both the anodic electrolysis chamber and the cathodic electrolysis chamber by the liquid supply means; In the cathodic electrolysis chamber, the sodium hydroxide aqueous solution and the magnesium hydroxide-containing solution are produced by electrolysis; The magnesium hydroxide-containing liquid can be delivered to the recovery tank by the liquid delivery means, The seawater can be supplied to the second reaction tank by the liquid supply means, In the second reaction tank, the calcium carbonate salt is produced, In the recovery tank, the calcium carbonate and the magnesium hydroxide are recovered as resin additives, The resin composition production system according to claim 2 , wherein the resin additive and the resin are mixed in the mixing section to produce a resin composition.

4. further comprising a sediment transfer means; the calcium carbonate salt precipitated in at least one of the second reaction tank and the recovery tank is transferred to the mixing section by the precipitate transfer means, instead of or in addition to the liquid transfer means; The magnesium hydroxide precipitated in at least one of the cathodic electrolysis chamber and the recovery tank is transferred to the mixing section. The resin composition production system according to claim 3.

5. In the electrolysis cell, the chlorine gas generated in the anodic electrolysis chamber can be supplied into the aqueous sodium salt solution in the anodic electrolysis chamber by the gas supply means. The resin composition production system according to claim 1.

6. the anodic electrolysis chamber includes an ultraviolet irradiation means, The ultraviolet irradiation means decomposes the hypochlorous acid produced in the anodic electrolysis chamber to produce hydrochloric acid. The resin composition production system according to claim 1.

7. Further comprising a fuel cell power plant; The hydrogen gas generated in the cathode electrolysis chamber can be supplied to the fuel cell power generation device by the gas supply means. The resin composition production system according to claim 1.

8. the fuel cell power generation device is capable of supplying electricity to the anode and the cathode; The resin composition production system according to claim 7.

9. Furthermore, the solar power generation device is included. The solar power generation device is capable of supplying electricity to the anode and the cathode. The resin composition production system according to claim 1.

10. The method includes a carbon dioxide recovery step and a resin composition production step, The carbon dioxide recovery step includes: The method includes an electrolysis step, a first reaction vessel step, a second reaction step, a liquid delivery step, a gas delivery step, and a recovery step, The electrolysis step is carried out using an electrolysis bath, the electrolysis cell includes a diaphragm, an anode, and a cathode; an anode electrolysis chamber and a cathode electrolysis chamber are provided in the electrolysis tank by the diaphragm; The anode is placed in the anodic electrolysis chamber, The cathode is disposed in the cathodic electrolysis chamber; the sodium salt aqueous solution can be supplied to both the anodic electrolysis chamber and the cathodic electrolysis chamber by the solution sending step, In the cathodic electrolysis chamber, an aqueous sodium hydroxide solution is generated by electrolysis; In the first reaction step, the sodium hydroxide aqueous solution is added by the liquid feeding step, In the first reaction step, a carbon dioxide-containing gas is supplied into the aqueous sodium hydroxide solution in the gas supply step, carbon dioxide in the carbon dioxide-containing gas reacts with sodium in the sodium hydroxide aqueous solution to produce sodium carbonate; In the second reaction step, the aqueous solution containing sodium carbonate in the first reaction tank is supplied and an aqueous calcium chloride solution containing calcium chloride is supplied in the liquid supplying step, the sodium carbonate salt reacts with the calcium chloride to produce calcium carbonate salt, a calcium carbonate salt-containing liquid containing the calcium carbonate salt is supplied to the recovery step by the liquid sending step, In the recovery step, the calcium carbonate salt is recovered as a resin additive, the resin composition production step is carried out using the resin composition production apparatus including a mixing section, In the mixing section, the resin additive and the resin are mixed to produce a resin composition. A method for producing a resin composition using carbon dioxide.

11. Seawater is used as the sodium salt aqueous solution and the calcium chloride aqueous solution. The method for producing a resin composition according to claim 10.

12. the seawater contains sodium chloride, calcium chloride, and magnesium chloride; The seawater is supplied to both the anodic electrolysis chamber and the cathodic electrolysis chamber by the liquid supplying step, In the cathodic electrolysis chamber, the sodium hydroxide aqueous solution and the magnesium hydroxide-containing solution are produced by electrolysis; supplying the magnesium hydroxide-containing liquid to the recovery tank through the liquid sending step; The seawater is supplied to the second reaction tank through the liquid supplying step, In the second reaction tank, the calcium carbonate salt is produced, In the recovery tank, the calcium carbonate and the magnesium hydroxide are recovered as resin additives, The method for producing a resin composition according to claim 11, wherein the resin additive and the resin are mixed in the mixing section to produce a resin composition.

13. Further, a precipitate transfer step is included, transferring the calcium carbonate salt precipitated in at least one of the second reaction tank and the recovery tank to the mixing section by the precipitate transferring step, instead of or in addition to the liquid transferring step; The magnesium hydroxide precipitated in at least one of the cathodic electrolysis chamber and the recovery tank is transferred to the mixing section. The method for producing the resin composition according to claim 12.

14. In the electrolysis step, the chlorine gas generated in the anodic electrolysis chamber is supplied to the aqueous sodium salt solution in the anodic electrolysis chamber by the gas supply step. The method for producing a resin composition according to claim 10.

15. The anodic electrolysis chamber includes an ultraviolet irradiation step, The ultraviolet irradiation step decomposes the hypochlorous acid produced in the anodic electrolysis chamber to produce hydrochloric acid. The method for producing a resin composition according to claim 10.

16. Further, the method includes a fuel cell power generation step using the fuel cell power generation device, supplying the hydrogen gas generated in the cathode electrolysis chamber to the fuel cell power generation device through the gas sending step; The method for producing a resin composition according to claim 10.

17. the fuel cell power generation device is capable of supplying electricity to the anode and the cathode; The method for producing the resin composition according to claim 16.

18. Further, the method includes a solar power generation step using a solar power generation device, The solar power generation device is capable of supplying electricity to the anode and the cathode. The method for producing a resin composition according to claim 10.

19. A resin filler manufacturing apparatus comprising the carbon dioxide recovery apparatus according to any one of claims 1 to 9.

20. An electrically conductive and water-permeable membrane or plate (excluding an ion exchange membrane) is used as the diaphragm of the carbon dioxide recovery device.

20. The apparatus for producing a resin filler according to claim 19.

21. A method for producing a resin filler, comprising the carbon dioxide recovery step according to any one of claims 10 to 18.

22. An electrically conductive and water-permeable membrane or plate (excluding an ion exchange membrane) is used as the diaphragm in the carbon dioxide recovery step.

22. The method for producing a resin filler according to claim 21.

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