Carbon dioxide fixation apparatus and carbon dioxide fixation method

Abstract

This invention provides a technology for easily fixing carbon dioxide in compressed air. [Solution] The device consists of a joint section, a cap section, and a pipe section. The cap section has a through-hole for the joint in the center of its upper surface, and a vent hole for exhaust near the edge of the upper surface. One end of the joint section is connected to a tube from a compressed air pressure circuit, and the other end is connected to one end of the pipe section. The joint section consists of an orifice joint and a partition joint. The orifice joint has an orifice for adjusting air pressure, and the partition joint is inserted into the through-hole for the joint in the cap section and secured with a nut. The cap section has threads that allow it to be screwed into the opening of a carbon dioxide fixation container containing water and calcium hydroxide. The other end of the pipe section has an air outlet, and the air outlet is inserted into the water and calcium hydroxide mixture inside the carbon dioxide fixation container.

Description

Technical Field

[0001] The present invention relates to a carbon dioxide immobilization device, and more particularly to a technology of a carbon dioxide immobilization device used in a compressed air pressure circuit.

Background Art

[0002] Conventionally, as a method for recovering carbon dioxide in compressed air, a method of adsorbing using a special filter or the like has been mainly used. However, regarding the treatment after carbon dioxide adsorption, it has been difficult for general business operators to remove carbon dioxide from the filter. Therefore, after the filter is recovered, it has been necessary to incinerate it in an incinerator equipped with a carbon dioxide emission absorption facility. Currently, there are few incinerators equipped with such facilities. If it is incinerated in a general incinerator, the carbon dioxide that has been好不容易absorbed will be released into the atmosphere. Therefore, a technology for immobilizing carbon dioxide in compressed air in an easy manner has been demanded.

[0003] Regarding such problems, various technologies have been proposed conventionally. For example, a carbon dioxide gas recovery device (see Patent Document 1) has been proposed and has become a known technology. More specifically, it is a device that can absorb and recover carbon dioxide gas in an energy-saving and efficient manner, and includes a reaction tank incorporating a shower nozzle for an aqueous calcium hydroxide solution disposed above the intake port of the exhaust gas containing carbon dioxide gas, and a recovery tank for recovering a treatment liquid containing calcium carbonate from the bottom of this reaction tank. However, it is large-scale as a carbon dioxide recovery device, is not targeted at compressed air, and has not solved the above problems yet.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] The object of this invention is to provide a carbon dioxide fixation device and a carbon dioxide fixation method that can fix carbon dioxide in a compressed air circuit in an easy manner and contribute to improving the global environment. [Means for solving the problem]

[0006] To solve the above-mentioned problems, the present invention provides a carbon dioxide fixation device for fixing carbon dioxide in a compressed air pressure circuit, comprising a joint section, a cap section, and a pipe section, wherein the cap section has a through-hole for the joint in the center of its upper surface and an exhaust vent hole near the edge of its upper surface, one end of the joint section is connected to a tube from the compressed air pressure circuit and the other end is connected to one end of the pipe section, the joint section consists of an orifice joint and a partition joint, the orifice joint has an orifice for adjusting air pressure, the partition joint is inserted into the through-hole for the joint of the cap section and fixed with a nut, the cap section has a screw thread so that it can be screwed into the opening of a carbon dioxide fixation container containing water and calcium hydroxide, and the other end of the pipe section has an air outlet for ejecting air, the air outlet is inserted into the mixed liquid of water and calcium hydroxide in the carbon dioxide fixation container.

[0007] Furthermore, the present invention employs a method in which the carbon dioxide fixation device is permanently connected to the piping within the compressed air circuit.

[0008] Furthermore, the present invention employs a method in which the carbon dioxide fixation container is a polyethylene container.

[0009] Furthermore, the present invention employs a method in which the orifice has a diameter of approximately 0.1 mm.

[0010] Furthermore, the present invention employs a method in which the cross-sectional area of ​​the vent hole is approximately 50 times the cross-sectional area of ​​the orifice.

[0011] Furthermore, the present invention employs a method in which, instead of a pipe section, a nozzle section is provided, one end of the nozzle section is connected to a joint section, the nozzle section branches the air from the joint section and sends it to two branch pipe sections, the branch pipe sections have ejection holes on the side near the ends, the ends of the branch pipe sections are bent in directions away from each other, and the ejection holes of the two branch pipe sections are positioned to agitate the liquid in the container in the same direction.

[0012] Furthermore, the present invention relates to a method for fixing carbon dioxide in a compressed air pressure circuit, comprising a carbon dioxide fixing device, the carbon dioxide fixing device comprising a joint portion, a cap portion, and a pipe portion, the cap portion having a joint through hole in the center of its upper surface and an exhaust vent hole near the edge of its upper surface, one end of the joint portion to which a tube from the compressed air pressure circuit can be connected and the other end connected to one end of the pipe portion, the joint portion comprising an orifice joint and a partition joint, the orifice joint having an orifice for adjusting air pressure, the partition joint being inserted into the joint through hole of the cap portion and fixed with a nut, and the cap portion being threaded onto the opening of a polyethylene container containing water and calcium hydroxide The method for fixing carbon dioxide in a compressed air circuit consists of the following steps: a step of putting water and calcium hydroxide into a polyethylene container with a threaded opening that can be inserted and stirring it; a step of inserting a pipe into the opening of the polyethylene container and screwing a cap onto the opening; a step of connecting a tube from a compressed air circuit to an orifice joint; a step of introducing air from the compressed air circuit into the polyethylene container, passing it through the pipe, and sending it into the mixture of water and calcium hydroxide, where the carbon dioxide in the air of the compressed air circuit and the calcium hydroxide in the polyethylene container combine to form calcium carbonate; a step of removing the carbon dioxide fixation device from the polyethylene container, covering and sealing the polyethylene container; and a step of recovering the polyethylene container. [Effects of the Invention]

[0013] According to the carbon dioxide fixation apparatus and carbon dioxide fixation method of the present invention, carbon dioxide can be fixed in a compressed air circuit in an easy manner, thereby contributing to the improvement of the global environment. [Brief explanation of the drawing]

[0014] [Figure 1] This is an overall schematic diagram showing an embodiment of the carbon dioxide fixation device according to the present invention. [Figure 2] This is a cross-sectional view showing the structure of a carbon dioxide fixation device according to the present invention. [Figure 3] This is an explanatory diagram showing the work process of the carbon dioxide fixation apparatus according to the present invention. [Figure 4] This is an explanatory diagram showing another embodiment of the carbon dioxide fixation device according to the present invention. [Modes for carrying out the invention]

[0015] The carbon dioxide fixation apparatus and carbon dioxide fixation method according to the present invention are characterized by their ability to fix carbon dioxide from the atmosphere within a compressed air circuit in an easy manner. Hereinafter, embodiments of the carbon dioxide fixation apparatus and carbon dioxide fixation method according to the present invention will be described with reference to the drawings. Furthermore, the carbon dioxide fixation apparatus and carbon dioxide fixation method according to the present invention are not limited to the embodiments described below, and can be appropriately modified within the scope of the technical concept of the present invention, that is, within the range of shapes, dimensions, structures, etc., that can achieve the same effects.

[0016] The present invention will be described with reference to Figures 1 to 4. Figure 1 is an overall schematic diagram showing an embodiment of the carbon dioxide fixation device according to the invention. Figure 2 is a cross-sectional view showing the structure of the carbon dioxide fixation device according to the invention, where (a) is a cross-sectional view of the carbon dioxide fixation device attached to a polyethylene container, and (b) is an exploded cross-sectional view of the carbon dioxide fixation device. FIG. 3 is an explanatory diagram showing the working process of the carbon dioxide fixation device according to the present invention. FIG. 4 is an explanatory diagram showing another embodiment of the carbon dioxide fixation device according to the present invention. (a) is a cross-sectional view of a nozzle portion for stirring a solution when fixing carbon dioxide, (b) is an overall perspective view of the nozzle portion, (c) is a schematic diagram explaining the flow of the liquid in the nozzle portion and the polyethylene container, (d) is a cross-sectional view showing a state where the ejection hole is housed in the case, and (e) is a cross-sectional view showing a state where the ejection hole is widened.

[0017] The carbon dioxide fixation device 1 fixes carbon dioxide in a compressed air pressure circuit. Generally speaking, a part of the air in the compressed air pressure circuit is taken out and mixed with the calcium hydroxide solution 92 in the polyethylene container 70, so that carbon dioxide in the air reacts with calcium hydroxide 90 to fix carbon dioxide as calcium carbonate 93. The carbon dioxide fixation device 1 is composed of a joint portion 10, a cap portion 20, and a tube portion 30. One side of the joint portion 10 is connected to the tube 84 from the compressed air pressure circuit 80, and the other side is connected to one side of the tube portion 30. The joint portion 10 is a part that guides the air in the tube 84 into the polyethylene container 70 and is also a part that regulates the flow rate of the air 94. The joint portion 10 is composed of an orifice joint 11 and a partition joint 15.

[0018] The orifice joint 11 forms the upper part of the joint portion 10 and has an orifice 12. It also has a one-touch joint structure 13 at the upper part and a male screw portion 14 at the lower part. The orifice 12 is a hole with a diameter of approximately 0.1 mm. When drawing air from the compressed air circuit into the polyethylene container 70, if highly compressed air of about 0.7 MPa is introduced directly into the polyethylene container 70, the force of the air ejection is too strong, and mixing with the calcium hydroxide solution 92 does not work properly. Therefore, an orifice 12 is provided as a pressure-limiting hole to introduce air with an appropriate flow rate into the polyethylene container 70. By providing the orifice 12 and making its diameter approximately 0.1 mm, the amount of air entering the polyethylene container 70 becomes approximately 1 L / min. This prevents the air from becoming turbulent within the polyethylene container 70, and allows for an appropriate flow rate for mixing the air 94 and the calcium hydroxide solution 92. In a controlled compressed air circuit, even a diameter of 0.1 mm will not cause blockages from debris, dust, etc. The one-touch joint structure 13 at the top of the orifice joint 11 allows tubes and the like to be secured simply by inserting them. Furthermore, the tubes and the like can be separated with a simple operation. In this embodiment, it is possible to swap out multiple polyethylene containers 70, so it would be efficient if the connection and disconnection of the tubes 84 of the compressed air circuit 80 could be easily performed. The lower part of the orifice joint 11 has a male threaded portion 14, which connects to the female threaded portion 17 of the bulkhead joint 15.

[0019] The partition joint 15, together with the cap portion 20, covers the opening 71 of the polyethylene container 70, and is intended to isolate the inside of the polyethylene container 70 from the outside. The bulkhead joint 15 has a female threaded section 17 at its upper part and a one-touch joint structure 16 at its lower part. There is a cap fixing threaded section 18 in the middle. The female threaded section 17 fixes the bulkhead joint 15 and the orifice joint 11. The one-touch joint structure 16 is for connecting the pipe section 30 to the bulkhead joint 15. By providing the one-touch joint structure 16, the pipe section 30 can be fixed and connected simply by inserting it into the one-touch joint structure 16, and disconnection can also be done with a simple operation. If the pipe section 30 is damaged during the fixing process, it can be easily replaced, which is convenient. The cap fixing screw portion 18 is the part for fixing the bulkhead joint 15 to the cap portion 20. The joint portion 10, including the bulkhead joint 15, is inserted into the joint hole 21 of the cap portion 20, and the cap fixing screw portion 18 and the nut 60 are screwed together, creating a structure that clamps the cap portion 20. Through this clamping, the joint portion 10 and the cap portion 20 become one unit. Furthermore, since the bottom of the partition joint 15 will come into contact with splashes of calcium hydroxide solution 92, the partition joint 15 itself can be made resistant to alkali, or the bottom components such as the one-touch joint structure 16 can be made resistant to corrosion to make it more resistant.

[0020] The cap portion 20 has threads that allow it to be screwed into the opening 71 of the polyethylene container 70, which is the carbon dioxide fixation container. The cap portion 20 screws into the opening 71 of the polyethylene container 70, and is the part that secures the carbon dioxide fixation device 1 to the polyethylene container 70. The cap portion 20 is generally the same shape as a normal cap for the polyethylene container 70. A joint hole 21 is made in the center of the upper surface of the cap portion 20. This is the hole into which the joint portion 10 is inserted. A vent hole 22 is provided near the edge of the top surface. The vent hole 22 is the hole through which the air 94 sent from the compressed air pressure circuit 80 into the polyethylene container 70 is finally exhausted. If the vent hole 22 is too small, the air 94 inside the polyethylene container 70 will not be expelled properly, the pressure inside the polyethylene container 70 will rise, and the amount of air 94 flowing into the polyethylene container 70 will decrease. Therefore, a hole large enough to maintain the air pressure inside the polyethylene container 70 at 0.1 MPa is necessary. Measurement results showed that if the diameter of the orifice 12 is approximately 50 times, the air pressure inside the polyethylene container 70 can be maintained at approximately 0.1 MPa. Therefore, it is preferable that the area of ​​the diameter of the vent hole 22 be approximately 50 times the area of ​​the diameter of the orifice 12. Furthermore, it is conceivable to significantly increase the diameter of the vent hole 22 by more than 50 times, but if this is done, a large amount of calcium hydroxide solution 92 will leak from the polyethylene container 70 if it is accidentally knocked over, so the vent hole 22 should not be made larger than necessary.

[0021] The pipe section 30 is structured to eject the air 94 that has entered the polyethylene container 70 into the calcium hydroxide solution 92. The pipe section 30 is an elastic pipe, with one end connected to a one-touch joint structure 16 of the partition joint 15, and the other end having a nozzle 31 which is inserted into the calcium hydroxide solution 92 and releases air from the nozzle 31. Since a portion of the pipe section 30 is immersed in an alkaline solution, it is necessary to use an alkali-resistant material such as polyethylene. In this embodiment, the polyethylene container 70 is the part that fixes carbon dioxide. Since this container holds the calcium hydroxide solution 92 for a long time, it needs to be resistant to alkali. The polyethylene container 70 is made of polyethylene, and therefore has alkali resistance. The polyethylene container 70 is, for example, a container of about 2L and is readily available at low cost. Furthermore, after carbon dioxide has been fixed, the original lid can be used as a sealing cap 72, allowing the container to be moved and disposed of properly while remaining sealed.

[0022] The process of carbon dioxide fixation will be explained in accordance with Figure 3. (Process 1) Prepare commercially available polyethylene containers. Clean the inside thoroughly so as not to affect the reaction of calcium hydroxide 90. It is advisable to prepare multiple polyethylene containers, as they will be replaced at regular intervals. Until use, keep the original cap sealed as a sealing cap 72 to prevent foreign objects from entering the inside. (Process 2) Remove the sealing cap 72 and pour the specified amount of water 91 and calcium hydroxide 90 into the opening 71 of the polyethylene container 70. Stir to obtain the calcium hydroxide solution 92. Since calcium hydroxide 90 is poorly soluble in water, stir thoroughly to obtain calcium hydroxide solution 92.

[0023] (Step 3) The carbon dioxide fixation device 1 is inserted into the polyethylene container 70, and the threaded portion of the opening 71 is screwed into the threaded portion of the cap 20. The nozzle 31 at the tip of the pipe 30 is immersed in the calcium hydroxide solution 92. (Step 4) The tube 84 on the compressed air pressure circuit 80 side is connected to the carbon dioxide fixation device 1. Because it is a one-touch joint structure 13, the connection between the tube 84 and the joint part 10 is completed simply by inserting the tube 84 into the one-touch joint structure 13 of the orifice joint 11. The valve 83 is opened, and the air 94 in the air supply pipe 81 of the compressed air pressure circuit 80 is sent to the carbon dioxide fixation device 1 via the tube 84. The supplied air passes through the pipe section 30 and is ejected from the nozzle 31 into the calcium hydroxide solution 92. The carbon dioxide in the air reacts with the calcium hydroxide 90 to produce calcium carbonate 93. The calcium carbonate 93 floats as a solid in the calcium hydroxide solution 92. The air 94 exits the calcium hydroxide solution 92, rises inside the polyethylene container 70, and is released into the atmosphere through the vent hole 22 of the cap portion 20. Therefore, it can be said that some of the carbon dioxide in the air 94 within the compressed air circuit 80 was fixed as calcium carbonate 93 within the polyethylene container 70, thereby reducing the amount of carbon dioxide in the air.

[0024] (Step 5) After carbon dioxide is fixed for a certain period, the polyethylene container 70 is removed from the carbon dioxide fixation device 1 and sealed with a sealing cap 72. Since the calcium carbonate 93 inside the polyethylene container 70 is sealed, it is easy to move, and multiple polyethylene containers 70 can be easily managed. (Step 6) The polyethylene containers are collected, and the calcium carbonate in the solution is recovered by a specialized company. The recovered calcium carbonate can be used as a material for concrete and resins. The carbon dioxide fixation device is connected to the piping within the compressed air circuit, except when being replaced, thus remaining constantly connected and enabling continuous carbon dioxide fixation.

[0025] Thus, according to this embodiment, carbon dioxide can be easily fixed in a compressed air circuit, contributing to the improvement of the global environment.

[0026] We have explained the method of carbon dioxide fixation using carbon dioxide fixation device 1, but by changing the shape of the ejection part, carbon dioxide fixation can be carried out more efficiently. A modified example will be explained using Figure 4 as a guide. Instead of the pipe section 30, it has a nozzle section 40. The nozzle section 40 has multiple ejection holes 43, and can stir the calcium hydroxide solution 92 while rotating it using air pressure. As shown in Figures 4(a) and (b), the nozzle section 40 is generally elongated, and its length is approximately the same as that of the tube section 30. Externally, it is covered by an outer case 55, with an inner case 50 inside. The nozzle section is broadly composed of an inner case 50, an outer case 55, and a branch pipe section 41.

[0027] The inner case 50 consists of a connecting pipe 51, a branch section 52, an opening 53, and an O-ring fixing groove 54. The inner case 50 as a whole is made of a hard resin. The connecting pipe 51 is the pipe portion that connects the nozzle portion 40 to the joint portion 10. Similar to the pipe portion 30, it is connected to and fixed to the joint portion 10 by inserting its end into the one-touch joint structure 16 of the partition joint 15. The branch section 52 is a space created within the inner case 50 as an extension of the connecting pipe 51. There are two holes at the bottom of the branch section 52, through which the two branch pipe sections 41 are connected. An opening 53 is provided at the bottom of the inner case 50 to guide the branch pipe section 41 to the outside. The branch pipe section 41 exits to the outside through the opening 53. The upper part of the inner case 50 is provided with an O-ring fixing groove 54 for positioning an O-ring 61. The O-ring 61 is used to align the position of the O-ring fixing groove 54 in the inner case 50 with the position of the first groove 57 or the second groove 58 in the outer case 55 and to maintain that position.

[0028] The outer case 55 is the part that adjusts the degree of expansion of the branch pipe section 41. The outer case 55 consists of an opening 56, a first groove 57, a second groove 58, and a pipe position regulating section 59. As shown in Figures 4(a) and (b), it is shaped to cover the entire nozzle section 40. Externally, it has an opening 56 at the bottom, from which the branch pipe section 41 protrudes. The bottom part is the pipe position regulating section 59, which adjusts the degree of opening of the branch section 52 by contacting the bend 42 of the branch pipe section 41. The upper inner surface of the outer case 55 is provided with a first groove 57 and a second groove 58. The outer case 55 is fixed such that either the first groove 57 or the second groove 58 is located in the position of the O-ring fixing groove 54 of the inner case 50. In the nozzle section 40, air from the joint section is branched and ejected from the ejection holes 43 of the two branch pipe sections 41. The branch pipe section 41 is connected to the branch section 52 of the inner case 50 and is a pipe that exits from the bottom of the inner case 50. Its material is the same as that of the pipe section 30. The branch pipe section 41 consists of two parts and is thinner than the pipe section 30. The bent portions 42, which are the ends of the branch pipes, are bent in directions that move them apart from each other, and the ejection holes 43 of the two branch pipes 41 are positioned to agitate the calcium hydroxide solution 92, which is the liquid in the container, in the same direction.

[0029] The effect of the ejection port 43 will be explained in accordance with Figure 4(c). The position of the ejection holes 43 of the branch pipe section 41 is point-symmetric with respect to the center point when viewing the nozzle section 40 from above. Therefore, the air 94 coming out of the ejection holes 43 rotates clockwise on the paper around its axis. As the flow of air 94 progresses, the entire calcium hydroxide solution 92 also flows clockwise, creating an overall flow and enhancing the stirring effect.

[0030] Next, the movement of the nozzle section 40 will be explained in accordance with Figures 4(d) and (e). As mentioned above, widening the ejection holes 43 of the branch pipe section 41 can enhance the stirring effect, but when inserting the nozzle section 40 into the polyethylene container 70, the area around the ejection holes 43 gets caught, making it difficult to insert into the polyethylene container 70. Therefore, when inserting the nozzle section 40 into the polyethylene container 70, the bent section 42, which is a branch pipe section 41 near the ejection hole 43, closes, and after insertion is complete, the bent section 42 opens. To close the branch pipe section 41, the outer case 55 is lowered relative to the inner case 50, as shown in Figure 4(d). The bent portion 42 of the branch pipe section 41 comes into contact with the edge of the opening 56 of the outer case 55 and closes. The bent portion 42 closes until it contacts the pipe position regulating portion 59. This makes it easier to insert the nozzle section 40 into the opening 71 of the polyethylene container 70. The O-ring 61 is pressed against the first groove 57, so this state is maintained. To open the branch pipe section 41, the outer case 55 is raised relative to the inner case 50, as shown in Figure 4(e). The bent section 42 of the branch pipe section 41 comes into contact with the pipe position regulating section 59 of the outer case 55 and opens. This opens the bent section 42, enhancing the stirring effect. The O-ring 61 is pressed against the second groove 58, so this state is maintained.

[0031] Thus, the carbon dioxide fixation device according to the present invention allows for the easy fixation of carbon dioxide in a compressed air circuit, thereby contributing to the improvement of the global environment.

[0032] Furthermore, by using polyethylene containers, they can be easily procured, and carbon dioxide fixation equipment can be utilized.

[0033] Furthermore, by adjusting the airflow rate to the carbon dioxide fixation device using the orifice, the calcium hydroxide solution 92 and air can be efficiently stirred.

[0034] Furthermore, by making the cross-sectional area of ​​the vent hole approximately 50 times that of the orifice, carbon dioxide can be stably fixed without increasing the pressure inside the container, and leakage can be reduced even if the container tips over.

[0035] Furthermore, using branch pipes can improve stirring efficiency. [Industrial applicability]

[0036] The carbon dioxide fixation device according to the present invention is considered to have great industrial potential as a technology that can easily fix carbon dioxide within a compressed air pressure circuit. [Explanation of Symbols]

[0037] 1. Carbon dioxide fixation device 10 Joint section 11. Orifice Joint 12 Orifices 13. One-touch joint structure 14 Male threaded section 15. Bulkhead joint 16 One-touch joint structure 17 Female threaded section 18 Screw part for fixing the cap 20 Cap section 21 Joint holes 22 vent holes 30 Pipe section 31 spout 40 Nozzle section 41 Branch pipe section 42. Bending section 43 Spout hole 50 inner cases 51 Connecting pipe 52 Branching point 53 Opening 54 O-ring fixing groove 55 Outer case 56 Opening 57 First groove 58 Second groove 59 Pipe position regulation part 60 nuts 61 O-rings 70 polyethylene containers 71 Opening 72 Sealing caps 80 Compressed air pressure circuit 81 Air supply tube 82 Fittings 83 Valves 84 tubes 90 Calcium hydroxide 91 water 92 Calcium hydroxide solution 93 Calcium carbonate 94 Air

Claims

1. A carbon dioxide fixation device that fixes carbon dioxide in a compressed air circuit, It consists of a joint part, a cap part, and a pipe part. The cap portion has a through-hole for jointing in the center of its upper surface, and exhaust vents near the edge of the upper surface. One end of the joint is connected to the tube from the compressed air circuit, and the other end is connected to one end of the pipe. The joint consists of an orifice joint and a partition joint. The orifice joint has an orifice for adjusting air pressure, The bulkhead joint is inserted into the through-hole for the joint in the cap portion and secured with a nut. The cap portion has threads that allow it to be screwed onto the opening of a carbon dioxide fixation container containing water and calcium hydroxide. The other end of the pipe section has an air outlet for ejecting air, A carbon dioxide fixation apparatus characterized in that the nozzle is inserted into the calcium hydroxide solution in the carbon dioxide fixation container.

2. The carbon dioxide fixation device according to claim 1, characterized in that the carbon dioxide fixation device is constantly connected to the piping in the compressed air circuit.

3. The carbon dioxide fixation apparatus according to claim 1, characterized in that the carbon dioxide fixation container is a polyethylene container.

4. The carbon dioxide fixation apparatus according to claim 1, characterized in that the orifice has a diameter of approximately 0.1 mm.

5. The carbon dioxide fixation apparatus according to claim 1, characterized in that the cross-sectional area of ​​the vent hole is approximately 50 times the cross-sectional area of ​​the orifice.

6. Instead of the aforementioned pipe section, it has a nozzle section, One of the nozzle portions is connected to the joint portion. The nozzle section branches the air from the joint section and sends it to two branch pipe sections. The branch pipe section has a discharge hole on the side near the end, The ends of the branch pipes are bent in directions that move them apart from each other. The carbon dioxide fixation apparatus according to claim 1, characterized in that the two ejection holes in the branch pipes are positioned to agitate the liquid in the container in the same direction.

7. A method for fixing carbon dioxide in a compressed air circuit, Equipped with a carbon dioxide fixation device, The carbon dioxide fixation device consists of a joint section, a cap section, and a pipe section. The cap portion has a through-hole for jointing in the center of its upper surface, and exhaust vents near the edge of the upper surface. One end of the joint is connected to a tube from the compressed air circuit, and the other end is connected to one end of the pipe. The joint consists of an orifice joint and a partition joint. The orifice joint has an orifice for adjusting air pressure, The bulkhead joint is inserted into the joint through-hole in the cap and secured with a nut. The cap portion has threads that allow it to be screwed onto the opening of a polyethylene container containing water and calcium hydroxide. The process involves adding water and calcium hydroxide to the polyethylene container and stirring it, The process involves inserting the pipe portion into the opening of the polyethylene container and screwing the cap portion onto the opening, The process involves connecting the tube from the compressed air circuit to the orifice joint, The process involves the following steps: air from the compressed air circuit is introduced into the polyethylene container, passes through the pipe section, and is sent into a mixture of water and calcium hydroxide, where the carbon dioxide in the air from the compressed air circuit and the calcium hydroxide in the polyethylene container combine to form calcium carbonate. The process involves removing the carbon dioxide fixation device from the polyethylene container, covering the polyethylene container with a lid, and sealing it. A method for fixing carbon dioxide in a compressed air circuit, comprising the step of recovering the polyethylene container.

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