Apparatus for carbon dioxide adsorption experiments and experimental methods using the same

Abstract

To provide a carbon dioxide adsorption experimental apparatus and experimental method using the same that can suppress the scattering of adsorbent material outside the PET bottle and reduce the exposure time of the adsorbent material. [Solution] An experimental apparatus for conducting carbon dioxide adsorption experiments, comprising: an adsorbent 2 for adsorbing carbon dioxide; a PET bottle 10 for housing the adsorbent 2 inside; a supply pipe 20 for supplying carbon dioxide into the PET bottle 10; a filter member 30 that serves as both a discharge section for discharging air from inside the PET bottle 10 to the outside and a scattering prevention section for preventing the adsorbent 2 from scattering outside the PET bottle 10; and a one-touch cap 50 that blocks communication between the supply pipe 20 and the filter member 30 and the outside, and seals the inside of the PET bottle 10.

Description

Technical Field

[0001] The present disclosure relates to an experimental apparatus for conducting an experiment of adsorbing carbon dioxide to an adsorbent, and an experimental method using the same.

Background Art

[0002] In recent years, reduction of carbon dioxide, which is considered a cause of global warming, has become an important issue. Along with reduction of emissions, research has also been conducted on technologies for recovering carbon dioxide and using it as a resource. Here, as technologies for recovering carbon dioxide from exhaust gas, for example, technologies such as a chemical absorption method using an absorption liquid (Patent Document 1) and a physical adsorption method using an adsorbent (Patent Document 2) are known. The chemical absorption method can recover carbon dioxide at low cost, but requires a large-scale plant, and thus is installed and used in thermal power plants and large-scale factories. On the other hand, since the physical adsorption method can be miniaturized, it can be installed and used in small-scale factories.

[0003] And in a facility for a guided tour for the general public related to the separation and recovery of carbon dioxide, a simple experiment for recovering carbon dioxide is conducted so that the recovery technology of carbon dioxide can be visually understood through hands-on experience. As such an experiment for recovering carbon dioxide, for example, an experiment is known in which carbon dioxide is blown into a plastic bottle filled with an absorption liquid (water) to about half the volume of the plastic bottle, and then the plastic bottle is capped and stirred to absorb the carbon dioxide in the plastic bottle into the absorption liquid (water) (Non-Patent Document 1). And when the carbon dioxide in the plastic bottle is absorbed into the absorption liquid (water), the volume of the carbon dioxide in the plastic bottle decreases, and the plastic bottle collapses (is crushed), so that visitors can actually feel that the carbon dioxide has been recovered.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] [Non-Patent Document 1] https: / / www2.nhk.or.jp / school / watch / clip / ?das_id=D0005402786_00000 [Overview of the project] [Problems that the invention aims to solve]

[0006] In experiments using physical adsorption rather than chemical absorption, as described above, there is a risk that the adsorbent material may be broken down into smaller particles and scattered outside the PET bottle during the experiment. Furthermore, since the adsorbent material requires careful handling, in order to prevent adverse effects on the human body even without the experimenter or observer wearing protective equipment, it is important to suppress the scattering of the adsorbent material outside the PET bottle during the experiment, and to minimize exposure time to the adsorbent material as much as possible, including during the preparation and cleanup of the experiment, in addition to the experiment itself.

[0007] Therefore, this disclosure is made to solve the above-mentioned problems and aims to provide a carbon dioxide adsorption experimental apparatus and an experimental method using the same that can suppress the scattering of the adsorbent outside the PET bottle and reduce the exposure time of the adsorbent. [Means for solving the problem]

[0008] One form of this disclosure made to solve the above problem is: An experimental apparatus for conducting carbon dioxide adsorption experiments, Adsorbent material that adsorbs carbon dioxide, A PET bottle containing the aforementioned adsorbent inside, A supply unit that supplies carbon dioxide into the inside of the aforementioned PET bottle, The aforementioned PET bottle includes an outlet for expelling the air inside the bottle to the outside, A scattering prevention part that prevents the adsorbent material from scattering to the outside of the PET bottle, The invention is characterized by having a lid member that blocks communication between the supply section and the discharge section and the outside, and seals the inside of the PET bottle.

[0009] In this experimental setup, carbon dioxide is supplied into a plastic bottle to replace the air inside, the bottle is sealed with a lid, and the bottle is shaken to agitate the adsorbent, causing the carbon dioxide to be adsorbed by the adsorbent. When the carbon dioxide in the plastic bottle is adsorbed by the adsorbent, the bottle collapses, allowing visitors to visually experience the carbon dioxide being collected. Additionally, because heat is generated when the adsorbent adsorbs carbon dioxide, visitors can also feel the warmth of the bottom of the plastic bottle (where the adsorbent is located) by touching it, thus experiencing the carbon dioxide being adsorbed by the adsorbent.

[0010] In this design, when carbon dioxide is supplied to the inside of the PET bottle via the supply unit during the experiment, any air remaining inside the PET bottle can be expelled to the outside through the exhaust unit. This shortens the time it takes for carbon dioxide to be supplied (filled) into the PET bottle, thus reducing the time the PET bottle is open and not sealed by the lid. This reduces the exposure time of the adsorbent contained inside the PET bottle. Furthermore, the anti-scattering unit prevents the adsorbent contained in the PET bottle from scattering to the outside.

[0011] Thus, this experimental apparatus allows visitors to visually and tactilely experience the adsorption of carbon dioxide onto an adsorbent through a simple physical adsorption experiment using an adsorbent material. Furthermore, because it suppresses the scattering of the finely divided adsorbent material outside the PET bottle and reduces the exposure time to the adsorbent material, the adsorbent material does not have any adverse effects on the human body, eliminating the need for experimenters or visitors to wear protective equipment.

[0012] In the experimental apparatus described above, Preferably, the end face of the supply section located on the inside side of the PET bottle is located closer to the bottom of the PET bottle than the end face of the discharge section located on the inside side of the PET bottle.

[0013] Due to the jet of carbon dioxide injected by the spray and the difference in specific gravity between carbon dioxide and air, the carbon dioxide supplied to the inside of the PET bottle fills the bottle from the bottom, while the air remaining inside the PET bottle moves to the top. Therefore, by arranging the supply and discharge sections in this way, the air remaining inside the PET bottle can be discharged to the outside more efficiently through the discharge section.

[0014] This allows for the efficient and rapid supply (filling) of carbon dioxide into the PET bottle and the replacement of air with carbon dioxide, thus shortening the time the PET bottle is open and not sealed by the lid. As a result, the scattering of the adsorbent contained inside the PET bottle is suppressed, and the exposure time can be further reduced.

[0015] Furthermore, in any of the experimental apparatuses mentioned above, The supply unit is a pipe member, The aforementioned discharge section is a filter member that allows air to pass through but makes it difficult for the finely powdered adsorbent to pass through. Preferably, the filter member also serves as a splash guard.

[0016] By doing so, the number of components in the experimental equipment can be reduced by using readily available materials (commercially available products), making it possible to manufacture experimental equipment for physical adsorption experiments using adsorbents very easily and inexpensively.

[0017] Alternatively, instead of a standard PET bottle cap, a commercially available one-touch type PET bottle cap (one-touch cap) may be used as the lid component.

[0018] By using a one-touch cap, the pipe member and the filter member can be attached to the one-touch cap and integrated without attaching them to the PET bottle. Therefore, just by detaching the one-touch cap from the PET bottle, the filter member can also be detached, and the work of replacing the adsorbent in the PET bottle can be performed very easily. Therefore, compared with the case where the pipe member and the filter member are attached to the PET bottle, the working time for replacing the adsorbent in the PET bottle can be shortened. As a result, the exposure time of the adsorbent can be reduced during the preparation of the experiment and during the cleanup.

[0019] Here, when the jet outlet of the pipe member opens toward the lower part (bottom) of the PET bottle, for example, in order to quickly replace the air inside the PET bottle, if the length of the pipe member (the depth inserted into the PET bottle) is increased with the intention of blowing in carbon dioxide with a high specific gravity from below, or in other words, if the distance between the jet outlet of the pipe member and the bottom of the PET bottle becomes small, there is a risk that the adsorbent will be scattered by the jet flow of carbon dioxide when filling the PET bottle with carbon dioxide.

[0020] Therefore, in any of the experimental instruments described above, the jet outlet of the pipe member located inside the PET bottle preferably opens toward the circumferential surface of the PET bottle.

[0021] For example, by bending the end portion on the jet outlet side of the pipe member or by sealing the tip portion of the pipe member to form a jet outlet in the circumferential direction (side surface) of the pipe member, the jet outlet can be opened toward the circumferential surface of the PET bottle. In particular, when the distance between the jet outlet and the bottom of the PET bottle becomes small (for example, when the jet outlet is located in the lower half of the PET bottle), the jet outlet of the pipe member may be in such a form.

[0022] By providing an outlet for the pipe component in this way, the jet of carbon dioxide will not directly reach the adsorbent, thus preventing the adsorbent from scattering when filling the PET bottle with carbon dioxide. This further suppresses the scattering of the adsorbent outside the PET bottle.

[0023] Another form of this disclosure made to solve the above problems is: A method for carbon dioxide adsorption experiment using any one of the experimental apparatuses described above, A supply and replacement step involves supplying carbon dioxide to the inside of the PET bottle containing the adsorbent material via the supply unit to replace the air inside the PET bottle, The lid member blocks communication between the supply section and the discharge section and the outside, and seals the inside of the PET bottle in a sealing step, The method is characterized by including an adsorption step of shaking the PET bottle to agitate the adsorbent material and causing the adsorbent material to adsorb carbon dioxide from inside the PET bottle.

[0024] This experimental method allows for carbon dioxide adsorption experiments that reduce the exposure time of the adsorbent while suppressing the scattering of the adsorbent outside the PET bottle. As a result, there is no risk to the human body, even if the experimenter or observer does not wear protective equipment (mask, goggles) during the experiment. Furthermore, although the pre-experiment preparation and cleanup conducted in the back room involve direct handling of the adsorbent, the adsorbent can be replaced quickly, and workers wear masks and goggles, so the impact on the human body is extremely small. Thus, observers can visually experience the carbon dioxide being collected without wearing protective equipment. In addition, because heat is generated during the adsorption process, they can feel that the bottom of the PET bottle containing the adsorbent is warm to the touch. In short, this experimental method allows observers to experience the adsorption of carbon dioxide by the adsorbent in a simple and inexpensive way, both visually and tactilely. [Effects of the Invention]

[0025] According to this disclosure, it is possible to provide a carbon dioxide adsorption experimental apparatus and an experimental method using the same that can suppress the scattering of the adsorbent outside the PET bottle and reduce the exposure time of the adsorbent. [Brief explanation of the drawing]

[0026] [Figure 1] This is a perspective view of the experimental apparatus in the embodiment. [Figure 2] This is a cross-sectional view of the experimental apparatus according to the embodiment. [Figure 3] This is a perspective view showing the one-touch cap section. [Figure 4] This diagram shows the state of the experimental equipment during the preparation process for the experiment. [Figure 5] This diagram shows the state of the experimental equipment during the supply and replacement process of the experiment. [Figure 6] This diagram shows a jet of carbon dioxide in the supply process. [Figure 7] This diagram shows the state of the experimental equipment during the sealing process of the experiment. [Figure 8] This diagram shows the state of the experimental equipment during the adsorption process of the experiment. [Figure 9] This figure shows a first modified example of the experimental apparatus in the embodiment. [Figure 10] This figure shows a second modified example of the experimental apparatus in the embodiment. [Figure 11] This is a diagram showing an alternative form of experimental equipment. [Figure 12] This is a diagram showing an alternative form of experimental equipment. [Modes for carrying out the invention]

[0027] An experimental apparatus and method for adsorbing carbon dioxide, which are embodiments of this disclosure, will be described in detail with reference to the drawings. The experimental apparatus of this embodiment is used for adsorption experiments conducted at exhibition facilities of companies and other organizations engaged in carbon dioxide separation and recovery, with the aim of allowing visitors to experience carbon dioxide recovery technology firsthand.

[0028] First, let's describe the experimental apparatus 1 of this embodiment with reference to Figures 1 to 3. As shown in Figures 1 and 2, the experimental apparatus 1 is made using an empty plastic bottle 10 and comprises an adsorbent 2 housed inside the plastic bottle 10, a supply pipe 20 for supplying carbon dioxide, a filter member 30 that discharges the air inside the plastic bottle 10 to the outside and prevents the adsorbent 2 from scattering outside the plastic bottle 10, and a one-touch cap 50 that seals the inside of the plastic bottle 10.

[0029] In this embodiment, a PET bottle 10 intended for non-carbonated beverages (thin and easily dented) is used. By using such a PET bottle 10, when carbon dioxide is adsorbed onto the adsorbent 2, the deformation (denting) of the PET bottle 10 becomes larger, making it very easy for visitors to visually see that carbon dioxide has been collected. In addition, visitors can easily feel the heat of adsorption generated by the adsorbent 2.

[0030] For example, zeolite can be used as the adsorbent material 2 to be placed inside the PET bottle 10. Of course, the adsorbent material 2 is not limited to zeolite; any substance that adsorbs carbon dioxide and does not have adverse effects on the human body (for example, activated carbon) will suffice.

[0031] The supply pipe 20 is a pipe component for supplying carbon dioxide from the outside to the inside of the PET bottle 10 and filling the inside of the PET bottle 10 with carbon dioxide. Note that the supply pipe 20 is an example of the "supply unit" in this disclosure. One end of the supply pipe 20 (supply port 21) is located near the opening of the PET bottle 10, and the other end of the supply pipe 20 (discharge port 22) is located inside the PET bottle. This allows carbon dioxide to be supplied from the outside to the inside of the PET bottle 10 via the supply pipe 20.

[0032] In this embodiment, the length (depth) of the portion of the supply pipe 20 inserted into the PET bottle 10 is more than half the length of the entire PET bottle, in order to facilitate the replacement of air by blowing in carbon dioxide, which has a higher specific gravity, from below. The other end of the supply pipe 20 is bent, and the nozzle 22 of the supply pipe 20 opens toward the circumferential surface of the PET bottle 10. This prevents the jet of carbon dioxide ejected from the nozzle 22 of the supply pipe 20 from directly blowing onto (reaching) the adsorbent 2. In this embodiment, a bendable straw is used as the supply pipe 20. The diameter of the supply port 21 of the supply pipe 20 is larger than the diameter of the nozzle of the spray can that supplies the carbon dioxide.

[0033] The filter member 30 is a sponge that allows air to pass through but does not easily allow the finely powdered adsorbent 2 to pass through. For example, a commercially available sponge for kitchen or bathroom cleaning can be used as such a sponge. As a result, the filter member 30 discharges the air remaining inside the PET bottle 10 to the outside, but does not easily discharge the adsorbent 2 (including the finely powdered form) contained inside the PET bottle 10 to the outside. In other words, the filter member 30 is an example of the "discharge section" and "scatter prevention section" of this disclosure, and the "discharge section" and "scatter prevention section" are integrated and perform the roles of both the "discharge section" and the "scatter prevention section".

[0034] The filter member 30 is positioned near the opening of the PET bottle 10. In this embodiment, as shown in Figure 2, the filter member 30 is fixed to the one-touch cap 50. The supply port 21 side of the supply pipe 20 is fixed to the filter member 30. The filter member 30 may be lightly fixed to the one-touch cap 50 so as to be held in place by the elasticity and friction of the filter member 30, or it may be firmly fixed with adhesive or tape. The supply port 21 of the supply pipe 20 is located on the upper surface 30a of the filter member 30. That is, the supply port 21 of the supply pipe 20 and the upper surface 30a of the filter member 30 are located on approximately the same plane. The supply port 21 side of the supply pipe 20 may be fixed to the one-touch cap 50 instead of the filter member 30. As described above, the supply pipe 20 and the filter member 30 are integrated into the one-touch cap 50, and when the one-touch cap 50 is attached to or detached from the PET bottle 10, the supply pipe 20 and the filter member 30 are also attached and detached.

[0035] Here, the nozzle 22 of the supply pipe 20 is located below the bottom of the PET bottle 10, below the lower surface 30b of the filter member 30. Therefore, due to the spray jet and the difference in specific gravity between carbon dioxide and air, the carbon dioxide supplied to the inside of the PET bottle 10 is efficiently filled from the bottom (bottom) of the PET bottle 10, while the air remaining inside the PET bottle 10 can be moved to the top of the PET bottle 10. This allows the air remaining inside the PET bottle 10 to be discharged to the outside very efficiently through the filter member 30. Note that the nozzle 22 of the supply pipe 20 only needs to be inserted below the upper surface 30a (inside the filter member 30), and does not necessarily need to be inserted below the lower surface 30b of the filter member 30.

[0036] The one-touch cap 50 is a commercially available one-touch cap for PET bottles and is a component for sealing the inside of the PET bottle 10. In other words, the one-touch cap 50 is an example of the "lid component" of this disclosure. As shown in Figure 3, the one-touch cap 50 comprises a main body 51 and a lid 52. The lid 52 is pivotally supported on the main body 51 so as to be rotatable (open and close), and an engaging piece 55 formed on the lid 52 engages with an engaging projection 56 formed on the main body 51, thereby locking the lid 52 to the main body 51 and putting it in a closed state. Then, by pressing the lock release part 57 provided on the main body 51, the engagement between the engaging piece 55 and the engaging projection 56 is released (unlocked), and the lid 52 becomes rotatable and puts it in an open state.

[0037] In this way, when the one-touch cap 50 is open, the opening of the PET bottle 10 is open, and a part (upper part) of the supply pipe 20 and filter member 30 is exposed to the outside, creating a state where the inside and outside of the PET bottle 10 are in communication via the supply pipe 20 and filter member 30. On the other hand, when the one-touch cap 50 is closed (see Figure 2), the opening of the PET bottle 10 is sealed by the lid 52, blocking communication between the supply pipe 20 and filter member 30 and the outside, creating a state where the inside of the PET bottle 10 is sealed.

[0038] Next, we will explain an experimental method for recovering (adsorbing) carbon dioxide by physical adsorption using experimental apparatus 1 having the above configuration, with reference to Figures 4 to 8. First, we will explain the preparation for the experiment with reference to Figure 4. As shown in Figure 4, prepare a PET bottle 10 without a cap and a one-touch cap 50 equipped with a supply pipe 20 and a filter member 30. Then, place the adsorbent material 2 inside the PET bottle 10. Once the adsorbent material 2 has been placed inside the PET bottle 10, attach the one-touch cap 50 to the PET bottle 10. This completes the preparation for the adsorption experiment.

[0039] Thus, according to the experimental method of this embodiment, by using experimental apparatus 1, the time required to put the adsorbent 2 into the PET bottle 10 can be shortened compared to using experimental apparatus in which the supply pipe 20 and filter member 30 are attached to the PET bottle 10 (see alternative form described later). In other words, the exposure time of the adsorbent 2 during the preparation of the experiment can be reduced.

[0040] Next, the procedure for the adsorption experiment will be explained. The adsorption experiment in this embodiment is performed in the following order: supply / replacement step, sealing step, and adsorption step. First, in the supply / replacement step, as shown in Figure 5, the one-touch cap 50 is opened, and the spray nozzle of a spray can filled with carbon dioxide (CO2) is inserted into the supply port 21 of the supply pipe 20, and carbon dioxide is sprayed from the spray can to supply carbon dioxide into the inside of the PET bottle 10 via the supply pipe 20. At this time, the ejection end of the supply pipe 20 is bent and the nozzle 22 opens toward the circumferential surface of the PET bottle 10, so as shown in Figure 6, the jet of carbon dioxide ejected from the nozzle 22 of the supply pipe 20 does not directly blow onto the adsorbent 2.

[0041] Therefore, when filling the PET bottle 10 with carbon dioxide, it is possible to prevent the adsorbent material 2 from scattering. This suppresses the scattering of the adsorbent material 2 outside the PET bottle 10. Even if the adsorbent material 2 inside the PET bottle 10 is scattered by the jet of carbon dioxide, the filter member 30 can prevent the adsorbent material 2 from scattering outside.

[0042] In this experimental apparatus 1, the nozzle 22 of the supply pipe 20 is located on the bottom side of the PET bottle 10, below the lower surface 30b of the filter member 30. Due to the difference in specific gravity between carbon dioxide and air, the air remaining inside the PET bottle 10 can be efficiently moved upwards, allowing it to be discharged to the outside very efficiently through the filter member 30. This shortens the time it takes to supply (fill) carbon dioxide into the PET bottle 10, thus reducing the exposure time of the adsorbent 2.

[0043] Then, once the filling of carbon dioxide into the PET bottle 10 is complete, in the sealing process, as shown in Figure 7, the spray nozzle of the carbon dioxide spray can is removed from the supply port 21 of the supply pipe 20, and the one-touch cap 50 is closed. This cuts off communication between the supply pipe 20 and the filter member 30 and the outside, and seals the inside of the PET bottle 10 filled with carbon dioxide.

[0044] Subsequently, in the adsorption process, the sealed PET bottle 10 (experimental apparatus 1) is shaken to agitate the adsorbent and allow carbon dioxide to be adsorbed onto the adsorbent 2. When the carbon dioxide contained in the PET bottle 10 is adsorbed onto the adsorbent 2, the PET bottle 10 will dent (collapse), allowing visitors to visually experience that the carbon dioxide has been collected. In addition, since heat is generated when the adsorbent 2 adsorbs carbon dioxide, visitors can also experience that the carbon dioxide has been adsorbed onto the adsorbent 2 by touching the bottom of the PET bottle 10 (the part containing the adsorbent 2) and feeling that it has become warm. In other words, according to the experimental method of this embodiment, visitors can experience the collection (adsorption) of carbon dioxide through both sight and touch.

[0045] Furthermore, during cleanup after the experiment, the separation of the adsorbent 2 from the PET bottle 10 can be done very easily, making disposal and recycling simple, and shortening the exposure time of the adsorbent 2. This reduces the time required to transfer the adsorbent 2 to the PET bottle 10 during experiment preparation and cleanup, thereby reducing the exposure time of the adsorbent 2. Thus, although the adsorbent 2 is handled directly during pre-experiment preparation and cleanup in the back room, it can be replaced quickly, and workers wear masks and goggles, so the impact on the human body is extremely small.

[0046] Here, a modified version of the experimental apparatus described above will be explained with reference to Figures 9 and 10. First, in the first modified version, instead of bending the ejection end of the supply pipe 20 as in the embodiment described above, the ejection end is sealed to form multiple ejection ports 22 on the side of the supply pipe 20, as shown in Figure 9. Although Figure 9 illustrates a configuration with multiple ejection ports 22, one or more ejection ports 22 are sufficient. Even in this first modified version, during the supply process of the experiment, it is possible to prevent the jet of carbon dioxide ejected from the ejection ports 22 of the supply pipe 20 from directly blowing onto the adsorbent 2, thereby preventing the adsorbent 2 from scattering.

[0047] Furthermore, in the second modification, instead of bending the ejection end of the supply pipe 20 as in the above embodiment, the length of the supply pipe 20 is shortened compared to the above embodiment, as shown in Figure 10. Specifically, the length of the supply pipe 20 (the length inserted into the PET bottle 10) is made smaller than 1 / 3 (more preferably 1 / 4) of the entire PET bottle (total length). In other words, the nozzle 22 is located in the upper 1 / 3 (more preferably upper 1 / 4) region of the PET bottle 10. The nozzle 22 of the supply pipe 20 opens toward the bottom of the PET bottle 10 (towards the adsorbent material 2).

[0048] By arranging the supply pipe 20 in this manner, the distance from the nozzle 22 to the adsorbent 2 can be increased. As a result, the jet of carbon dioxide ejected from the supply pipe 20 (nozzle 22) diffuses within the PET bottle 10 and its flow velocity slows down before it reaches the adsorbent 2. Therefore, even in the second modified example, it is possible to prevent the adsorbent 2 from scattering when filling the PET bottle 10 with carbon dioxide during the supply process of the experiment.

[0049] As described above, the experimental apparatus 1 and experimental method using the same of this embodiment suppress the scattering of the adsorbent 2 outside the PET bottle 10 and reduce the exposure time of the adsorbent 2. Therefore, the adsorbent 2 can be prevented from having adverse effects on the human body during the preparation, cleanup, and during the experiment. As a result, experimenters and observers can conduct carbon dioxide recovery experiments using physical adsorption without wearing protective equipment, and observers can visually and tactilely experience the carbon dioxide being adsorbed by the adsorbent 2.

[0050] It should be noted that the above embodiments are merely illustrative and do not limit this disclosure in any way, and various improvements and modifications are possible without departing from the gist of the invention. For example, in the above embodiments, a one-touch type cap 50 is used as the lid member, but instead of using the one-touch type cap 50, a regular PET bottle cap 80 can be used as shown in Figure 11. In this case, the supply pipe 20 and the filter member 30 can be attached to the opening of the PET bottle 10. Figure 11 shows the form in which the supply pipe 20 is attached to the PET bottle 10. The supply pipe 20 can also be attached to the filter member 30, but when using a PET bottle cap 80, it is necessary to attach and detach the filter member 30 to the PET bottle 10 when replacing the adsorbent 2, so attaching the supply pipe 20 to the PET bottle 10 is more convenient than attaching it to the filter member 30.

[0051] Furthermore, in the above embodiment, a filter member 30 is used that serves both as a discharge section and a scattering prevention section. However, instead of such a filter member 30, as shown in Figure 12, a discharge pipe 40 can be used as the discharge section and a scattering prevention plate 45 as the scattering prevention section. In this case, when carbon dioxide is supplied into the PET bottle 10, the air remaining inside the PET bottle 10 is discharged to the outside through the discharge pipe 40. Also, the scattering of the adsorbent 2 to the outside is prevented by the scattering prevention plate 45. This configuration can also be applied when a PET bottle cap 80 is used. [Explanation of Symbols]

[0052] 1. Laboratory equipment 2 Adsorbent 10 plastic bottles 20 Supply pipe 21 Supply port 22 spout 30 Filter components 30a top surface 30b Bottom side 40 Discharge pipe 45 Shatterproof plate 50 One-touch cap 80 plastic bottle caps

Claims

1. An experimental apparatus for conducting carbon dioxide adsorption experiments, Adsorbent material that adsorbs carbon dioxide, A PET bottle containing the aforementioned adsorbent inside, A supply unit that supplies carbon dioxide into the inside of the aforementioned PET bottle, The aforementioned PET bottle includes an outlet for expelling the air inside the bottle to the outside, A scattering prevention part that prevents the adsorbent material from scattering to the outside of the PET bottle, A lid member that blocks communication between the supply section and the discharge section and the outside, and seals the inside of the PET bottle, A laboratory apparatus characterized by having the following features.

2. In the experimental apparatus described in claim 1, The end face of the supply section located on the inside of the PET bottle is located closer to the bottom of the PET bottle than the end face of the discharge section located on the inside of the PET bottle. A laboratory apparatus characterized by the following features.

3. In the experimental apparatus described in claim 1, The supply unit is a pipe member, The discharge section is a filter member that allows air to pass through but does not allow the finely powdered adsorbent to pass through. The aforementioned filter member also serves as a splash guard. A laboratory apparatus characterized by the following features.

4. In the experimental apparatus described in claim 3, The nozzle of the tube member located inside the PET bottle opens toward the circumferential surface of the PET bottle. A laboratory apparatus characterized by the following features.

5. A method for carbon dioxide adsorption experiment using any one of the experimental apparatuses described in claims 1 to 4, A supply and replacement step involves supplying carbon dioxide to the inside of the PET bottle containing the adsorbent material via the supply unit to replace the air in the PET bottle, The lid member blocks communication between the supply section and the discharge section and the outside, and seals the inside of the PET bottle in a sealing step, The adsorption step involves shaking the PET bottle to agitate the adsorbent material and allowing the adsorbent material to adsorb carbon dioxide from inside the PET bottle, An experimental method characterized by including [a certain element].

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