WO2022249773A1 - 吸着デバイス - Google Patents
吸着デバイス Download PDFInfo
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- WO2022249773A1 WO2022249773A1 PCT/JP2022/017297 JP2022017297W WO2022249773A1 WO 2022249773 A1 WO2022249773 A1 WO 2022249773A1 JP 2022017297 W JP2022017297 W JP 2022017297W WO 2022249773 A1 WO2022249773 A1 WO 2022249773A1
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- Prior art keywords
- adsorbent
- adsorption device
- gas
- holder
- adsorption
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 130
- 239000000463 material Substances 0.000 claims abstract description 125
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000003463 adsorbent Substances 0.000 claims description 153
- 229920005989 resin Polymers 0.000 claims description 19
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- 125000000524 functional group Chemical group 0.000 claims description 15
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- 239000004698 Polyethylene Substances 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 9
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0415—Beds in cartridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/20—Organic adsorbents
- B01D2253/202—Polymeric adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/25—Coated, impregnated or composite adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
Definitions
- the present disclosure relates to an adsorption device that is used in application equipment such as air conditioners and adsorbs predetermined components of gas.
- Patent Literature 1 discloses a filter used in a car air conditioner as an adsorption device that adsorbs predetermined gas components.
- This filter has a plurality of honeycomb-shaped activated carbon cells and a cartridge holding the plurality of activated carbon cells arranged in a flat plate shape, and adsorbs and removes predetermined components contained in the air inside the vehicle.
- the adsorption device is placed and used inside application equipment such as an air conditioner.
- the adsorption device is replaced, for example, every predetermined period in order to maintain good adsorption performance. In this case, the work burden and cost associated with the replacement of the adsorption device are incurred.
- the present disclosure provides an adsorption device that can obtain good adsorption performance for predetermined components contained in gas, and that can reduce the work burden and cost associated with replacement.
- An adsorption device includes an adsorbent that repeatedly adsorbs and releases a predetermined component of a gas, and a holder that holds the adsorbent in contact with the gas.
- the holder includes an inner space for containing the adsorbent, an inlet for introducing gas into the inner space, and an outlet for discharging the gas that has passed through the inner space. and a covering material that has a property and covers the inlet and the outlet of the cell.
- the adsorption device can obtain good adsorption performance for the predetermined component contained in the gas, and can reduce the work burden and cost associated with replacement.
- FIG. 1 is a perspective view showing the configuration of an indoor unit of an air conditioner according to an embodiment.
- 2 is a schematic diagram showing the configuration of the adsorption device of FIG. 1.
- FIG. 3 is a diagram showing the structure of a polymer compound contained in the adsorbent of FIG. 1.
- FIG. 4 is a schematic diagram showing the configuration of an adsorption device according to a first modified example.
- An adsorption device includes an adsorbent that repeatedly adsorbs and releases a predetermined component of a gas, and a holder that holds the adsorbent in contact with the gas.
- the holder includes an inner space for containing the adsorbent, an inlet for introducing gas into the inner space, and an outlet for discharging the gas that has passed through the inner space. and a covering material that has a property and covers the inlet and the outlet of the cell.
- the adsorbent by storing the adsorbent that repeatedly adsorbs and releases the predetermined component of the gas in the internal spaces of the plurality of cells, the adsorbent can be distributed and dispersed in each cell. As a result, the contact area of the adsorbent with respect to the gas can be expanded, and the adsorption amount of the adsorbent can be increased. Therefore, the adsorption device can obtain good adsorption performance. Also, the adsorbent repeatedly adsorbs and releases a predetermined component of the gas. Therefore, it can be used continuously by regenerating the adsorbent. Therefore, the adsorption device can reduce the number of replacement times, the work load associated with the replacement, and the cost.
- the cross-sectional area of each internal space in the direction of gas flow from the inlet to the outlet may be in the range of 0.5 cm 2 or more and 10.0 cm 2 or less.
- the adsorbent held in each cell can be brought into contact with the gas efficiently. Therefore, the adsorption amount of the adsorbent can be improved. Further, for example, when the adsorbent is regenerated by heating, the adsorbent held in the cell can be efficiently brought into contact with the heated gas. Therefore, the adsorbent can be efficiently regenerated.
- the material of the holder body may contain at least one of paper and resin.
- the adsorption device can be made lighter and the manufacturing cost can be reduced.
- the holder body can be easily processed into a desired shape.
- the material of the holder main body includes at least one of paper and resin, the holder main body can be made of a material with low thermal conductivity.
- the adsorbent when the adsorbent is heated, the adsorbent can be kept warm by the holder body. Therefore, for example, when the adsorbent releases a predetermined component by heating, the adsorbent can easily release the target to be adsorbed by keeping the adsorbent warm, and the adsorbent can be efficiently regenerated.
- the material of the holder body may include at least one of metal and ceramic.
- the holder body By including at least one of metal and ceramic in the material of the holder body, the holder body can be made of a material with high thermal conductivity. Thereby, when heating the adsorbent, the adsorbent can be heated via the holder main body. Therefore, for example, when the adsorbent releases a predetermined component by heating, the adsorbent can be heated well to facilitate the release of the target to be adsorbed to the adsorbent, and the adsorbent can be efficiently regenerated.
- the thermal conductivity of the holder body may be a value in the range of 50 W/mK or more and 500 W/mK or less.
- the adsorbent may contain a polymer compound having a functional group that adsorbs and releases a predetermined component and a resin skeleton directly or indirectly bonded to the functional group.
- the pressure loss when air is passed through the covering material at a flow rate of 1 m/sec may be in the range of 5 Pa or more and 30 Pa or less.
- the adsorption device can prevent the adsorbent held in each cell from falling off from the holder body by the covering material, ensure good air permeability, and allow the adsorbent to come into contact with the gas efficiently.
- the covering material may contain nonwoven fabric.
- the nonwoven fabric may contain at least one of polypropylene (PP), polyethylene (PE), and polyethylene terephthalate (PET).
- PP polypropylene
- PE polyethylene
- PET polyethylene terephthalate
- the nonwoven fabric contains at least one of PP, PE, and PET
- the nonwoven fabric and the holder body can be relatively easily joined by heat welding or the like without using an adhesive.
- the adsorption device can be simplified in structure and reduced in weight.
- the basis weight of the covering material may be in the range of 10 g/m 2 or more and 90 g/m 2 or less.
- the adsorbent held in each cell can be efficiently brought into contact with the gas while the covering material prevents the adsorbent held in each cell from falling off from the holder body.
- the covering material may contain a metal mesh.
- the thermal conductivity of the covering material can be improved. Therefore, for example, when the adsorbent is regenerated by heating, the adsorbent can be easily regenerated by heating the adsorbent through the covering material from the outside of the adsorption device.
- the pressure loss when passing air from the inlet side to the outlet side at a flow rate of 1 m/sec may be a value in the range of 40 Pa or more and 500 Pa or less.
- the adsorbent may be a powder having an average particle size in the range of 400 ⁇ m or more and 1.3 mm or less.
- the covering material may contain a mesh having a mesh diameter in the range of 50 (mesh/inch) or more and 200 (mesh/inch) or less.
- FIG. 1 is a perspective view showing the configuration of an indoor unit 10 of an air conditioner 1 according to an embodiment.
- the air conditioner 1 is an example of an application device that includes the adsorption device 4 .
- An air conditioner 1 shown in FIG. 1 includes, as an example, an indoor unit 10 and an outdoor unit (not shown).
- refrigerant circulates between the indoor unit 10 and the outdoor unit.
- the indoor unit 10 includes a heat exchanger 2 that exchanges heat between a refrigerant and indoor air, and an air blowing mechanism 3 that takes in indoor air, exchanges heat with the heat exchanger 2, and then discharges the air.
- the indoor unit 10 also includes an adsorption device 4 having an adsorbent 5 that repeatedly adsorbs and releases a predetermined component of gas, and a regeneration mechanism 6 that causes the adsorbent 5 in the adsorption device 4 to release a predetermined component to regenerate the adsorbent 5. and
- the predetermined component referred to here is carbon dioxide, for example.
- the indoor unit 10 adsorbs and removes carbon dioxide from the indoor air with the adsorbent 5, as will be described later. Further, the indoor unit 10 regenerates the adsorbent 5 by releasing the carbon dioxide adsorbed on the adsorbent 5 by the regeneration mechanism 6 .
- the air conditioner 1 regenerates the adsorbent 5 while repeatedly using it.
- the adsorption device 4 of this embodiment is a filter that removes carbon dioxide from the air.
- the regeneration mechanism 6 of this embodiment releases the carbon dioxide adsorbed on the adsorbent 5 by heating the adsorbent 5 .
- the heat exchanger 2 and the blower mechanism 3 serve as the regeneration mechanism 6 as an example. Therefore, the air conditioner 1 does not need to have a separate regeneration mechanism to regenerate the adsorbent 5 .
- the heat exchanger 2 heats the air by exchanging heat with the refrigerant.
- the blower mechanism 3 blows heated air to the adsorption device 4 .
- the adsorption device 4 is arranged in the middle of the air flow passage provided inside the indoor unit 10 .
- the air blowing mechanism 3 generates an air current passing through the adsorption device 4 by using the air flowing through the air flow passage.
- the adsorption device 4 carries an adsorbent 5 .
- the adsorbent 5 of this embodiment repeatedly adsorbs and releases carbon dioxide contained in gas.
- the adsorbent 5 is porous.
- the adsorbent 5 releases the adsorbed carbon dioxide by being heated at a relatively low temperature (for example, a temperature in the range of 40° C. or higher and 100° C. or lower). Since the adsorbent 5 can thus be regenerated at a relatively low temperature, the energy required for regeneration can be reduced. In addition, it is possible to suppress unnecessary thermal effects on the constituent elements of the indoor unit 10 due to the heating temperature for heating the adsorbent 5 .
- FIG. 2 is a schematic diagram showing the configuration of the adsorption device 4 of FIG.
- the adsorption device 4 shown in FIGS. 1 and 2 includes an adsorbent 5 that repeatedly adsorbs and releases a predetermined component of gas, and a holder 8 that holds the adsorbent 5 in contact with the gas.
- the adsorbent 5 is powder as an example.
- the holder 8 has a holder body 80 , a coating material 81 and an adhesive material 82 .
- the holder main body 80 is formed in a plate shape.
- a plurality of cells 80 a are formed in the holder body 80 .
- the holder main body 80 is a cell assembly.
- the adsorbent 5 is arranged inside each cell 80a.
- the adsorbents 5 are dispersedly arranged in the holder body 80 .
- the cell 80a has an internal space 80b for accommodating the adsorbent 5, an inlet 80c for introducing gas into the internal space 80b, and an outlet 80d for discharging the gas that has passed through the internal space 80b.
- the holder main body 80 has a plurality of inlets 80c arranged on one surface and a plurality of outlets 80d arranged on the other surface.
- the holder body 80 includes a plurality of hexagonal cells 80a in plan view.
- the cross-sectional shape of the internal space 80b in the gas flow direction from the inlet 80c to the outlet 80d is polygonal (eg, hexagonal). With this configuration, the adsorption device 4 can easily maintain the shape of the flow path cross section of the internal space 80 b of the holder body 80 .
- the holder body 80 of the present embodiment has an outer wall portion 80e surrounding the outer circumference and an inner wall portion 80f arranged inside the outer wall portion 80e in plan view.
- the outer wall portion 80 e and the inner wall portion 80 f are erected in the thickness direction of the holder main body 80 . That is, each wall surface of the outer wall portion 80e and the inner wall portion 80f is arranged within a plane including the thickness direction of the holder main body 80.
- the plurality of cells 80a are individually partitioned by the outer wall portion 80e and the inner wall portion 80f.
- the wall thickness dimension of the outer wall portion 80e and the inner wall portion 80f may be the same or different.
- each internal space 80b is independent of each other. Adjacent internal spaces 80b are separated from each other. Therefore, the holder body 80 can hold the adsorbents 5 in a distributed manner while preventing the adsorbents 5 from moving between the adjacent internal spaces 80b. Moreover, the holder main body 80 has sufficient strength to maintain its shape in its natural state. Therefore, deformation of the holder main body 80 does not block the passage of the internal space 80b.
- the channel cross-sectional area of each internal space 80b in the gas flow direction from the inlet 80c of the adsorption device 4 to the outlet 80d can be appropriately set.
- the channel cross-sectional area of each internal space 80b is a value in the range of 0.5 cm 2 or more and 10.0 cm 2 or less. For example, if the flow passage cross-sectional area is increased within a certain range, the filling amount of the adsorbent 5 in each cell 80a is increased, and the gas adsorption/desorption amount of the adsorption device 4 is improved.
- the adsorption device 4 by appropriately setting the channel cross-sectional area of each internal space 80b, when the adsorbent 5 is regenerated by heating, the adsorption target can be easily released from the adsorbent 5, The time required for regeneration of the adsorbent 5 can be shortened. Further, the adsorption device 4 enhances the effect of heat retention of the adsorbent 5 and the effect of conducting heat from the holder body 80 to the adsorbent 5 , so that the adsorbent 5 can be easily heated.
- the pressure loss when air is passed through the covering material 81 at a flow rate of 1 m/sec is a value in the range of 5 Pa or more and 30 Pa or less.
- the pressure loss of the adsorption device 4 is in the range of 40 Pa or more and 500 Pa or less when air is passed from the side of the inlet 80c to the side of the outlet 80d at a flow rate of 1 m/sec.
- the pressure loss when air is passed from the side of the inlet 80c to the side of the outlet 80d at a flow rate of 1 m/sec is a value in the range of 150 Pa or more and 500 Pa or less.
- the material of the holder body 80 includes at least one of paper and resin. Paper and resin are examples of materials with relatively low thermal conductivity.
- the material of the holder main body 80 of this embodiment includes paper. By configuring the holder main body 80 so as to include paper in this way, the heat retaining effect of the adsorbent 5 held by the holder main body 80 can be enhanced.
- the material of the holder main body 80 of the present embodiment contains paper, it may contain resin instead of paper, or may contain paper and resin.
- the covering material 81 has air permeability and covers the inlet 80c and the outlet 80d of the cell 80a.
- a peripheral portion of the inlet 80c of each cell 80a and a peripheral portion of the outlet 80d of each cell 80a are covered with a covering material 81.
- the adsorbent 5 accommodated in the internal space 80b of each cell 80a is not mixed through the inlet 80c or the outlet 80d.
- the state in which the adsorbents 5 are arranged dispersedly over the entire plate surface of the holder main body 80 is maintained.
- the adsorbent 5 is held in each internal space 80b surrounded by each cell 80a and the covering material 81 .
- a binder or the like for holding the adsorbent 5 in the internal space 80b of each cell 80a is not required. Therefore, when the surface of the adsorbent 5 is covered with a binder or the like (for example, when the adsorbent 5 is porous, the pores on the surface of the adsorbent 5 are filled with the binder or the like), which reduces the adsorption performance. There is no
- the covering material 81 of this embodiment includes a nonwoven fabric.
- this nonwoven fabric contains at least one of polypropylene (PP), polyethylene (PE), and polyethylene terephthalate (PET).
- the weight per unit area of the covering material 81 can be set as appropriate, but as an example, it is a value in the range of 10 g/m 2 or more and 90 g/m 2 or less.
- the adsorption device 4 has a pair of covering materials 81 arranged on both sides of the holder body 80 .
- the pair of covering materials 81 are welded to each other at their peripheries while covering the holder main body 80 from both sides. As this welding, heat welding can be adopted when the coating material 81 contains a resin material or the like.
- the pair of coating materials 81 are integrated by melting and solidifying each other at their contact portions. Therefore, an adhesive for bonding the pair of covering materials 81 is not required.
- the covering material 81 can be made relatively thin and lightweight compared to, for example, a case where the covering material 81 is made of woven fabric.
- the adhesive material 82 is arranged between the coating material 81 and the holder body 80 to bond the coating material 81 and the holder body 80 together. In other words, the coating material 81 and the holder main body 80 are bonded with the adhesive material 82 . Therefore, as long as the coating material 81 and the holder main body 80 can be adhered to the adhesive material 82, the materials of the coating material 81 and the holder main body 80 may be different from each other.
- the adhesive 82 is arranged on both sides of the holder body 80 .
- the adhesive 82 includes at least one of a thermoplastic resin-based material and an elastomer-based material. Examples of thermoplastic resin materials include vinyl acetate resin, ethylene vinyl acetate (EVA), urethane resin, and acrylic materials. Examples of elastomer-based materials include silicone resin-based materials, modified silicone resin-based materials, silylated urethane resin-based materials, and rubber-based materials.
- the adsorbent 5 is powder having an average particle size in the range of 400 ⁇ m or more and 1.3 mm or less.
- the covering material 81 has openings through which the powder does not pass. This can effectively prevent the adsorbent 5 from falling off from the covering material 81 .
- the average particle diameter can be measured by Coulter counter method, laser diffraction method, image analysis method, or the like. For example, according to the Coulter Counter method, the average particle size is calculated as a 50% volume average particle size.
- the adsorption device 4 of this embodiment is arranged inside the indoor unit 10 so as to correspond to the outer surface of the heat exchanger 2, as an example.
- the shape of the adsorption device 4 may be processed in order to arrange the adsorption device 4 within a predetermined space.
- FIG. 3 is a diagram showing the structure of the polymer compound 7 included in the adsorbent 5 of FIG. 1 as a carbon dioxide adsorbent.
- FIG. 3 schematically shows the structure of the polymer compound 7 including a partial chemical structure.
- the adsorbent 5 includes a polymer compound 7 having a chemical structure to which a functional group 7b containing an amine group, which is at least a primary amine group, is bound.
- this polymer compound 7 has a base material 7a forming a molecular skeleton and a functional group 7b that is chemically bonded to the base material 7a and contains an amine group.
- the amine group is, for example, desirably a primary amine group, but may be a secondary amine group.
- Functional group 7b in this embodiment includes a CH 2 —NH 2 group as an example.
- the functional group 7b is bonded as a side chain to the main chain of the base material 7a.
- the base material 7a includes a resin skeleton composed of one or more resins.
- the base material 7a of the present embodiment includes at least a polystyrene (PS) resin skeleton as the resin skeleton.
- PS polystyrene
- the functional groups 7b are also present in the pores. Thereby, the adsorbent 5 adsorbs carbon dioxide even in the pores.
- the adsorbent 5 includes a polymer compound 7 having a functional group 7b that adsorbs and releases a predetermined component and a resin skeleton directly or indirectly bonded to the functional group 7b.
- a porous carbon dioxide adsorbent containing a polymer compound having a chemical structure in which a functional group containing an amine group that is at least a primary amine group is bonded is contained in gas. It was confirmed that carbon dioxide can be abundantly adsorbed. It was also confirmed that this carbon dioxide adsorbent can release carbon dioxide adsorbed by the polymer compound at a relatively low temperature.
- the polymer compound 7 described above is based on such findings.
- the polymer compound 7 of the present embodiment has a structure in which an amine group is bonded to a base material 7a forming a molecular skeleton via a hydrophobic group having higher hydrophobicity than an amine group (an example of which is an aromatic ring). Therefore, the adsorbent 5 can be regenerated at a relatively low temperature due to the action of this hydrophobic group. Also, the adsorbent 5 is kept solid within the operating temperature range of the air conditioner 1 . Therefore, even if the adsorbent 5 is heated during regeneration, decomposition and volatilization of the amine groups are prevented.
- the adsorbent 5 is kept solid within the operating temperature range of the air conditioner 1, a binder for binding and holding the polymer compound 7 is not required. As a result, it is possible to prevent the adsorption performance of the adsorbent 5 from deteriorating due to the pores of the adsorbent 5 being clogged with the binder.
- the air conditioner 1 is driven in either a first mode for reducing the carbon dioxide concentration in the indoor air or a second mode for increasing the carbon dioxide concentration in the indoor air.
- indoor air is blown toward the adsorbent 5 by the blowing mechanism 3 in the indoor unit 10 .
- the adsorbent 5 adsorbs carbon dioxide contained in the air.
- the concentration of carbon dioxide in the air in the room may rise to, for example, 1600 ppm or more.
- the adsorbent 5 adsorbs carbon dioxide in the room, so that the carbon dioxide concentration in the room, which has risen in this way, can be reduced to, for example, 1000 ppm or less.
- the adsorbent 5 is regenerated by the regeneration mechanism 6 to release carbon dioxide. This increases the carbon dioxide concentration in the room.
- the adsorption device 4 uses the adsorbent 5 that repeatedly adsorbs and releases a predetermined gas component. By dividing the adsorbent 5 into the internal spaces 80b of the plurality of cells 80a and accommodating the adsorbent 5, the adsorption device 4 can distribute and disperse the adsorbent 5 in each cell 80a. In this embodiment, since the holder main body 80 is formed in a plate shape, it is possible to easily hold the adsorbent 5 uniformly within the plane of the adsorption device 4 . As a result, the adsorption device 4 can increase the contact area of the adsorbent 5 with the gas and increase the adsorption amount of the adsorbent 5 .
- the adsorption device 4 can reduce the number of times of replacement, the work load associated with the replacement, and the cost.
- each internal space 80b in the flow direction of the gas from the inlet 80c to the outlet 80d has a cross-sectional area of 0.5 cm 2 or more and 10.0 cm 2 or less. value.
- the adsorbent 5 held in each cell 80a can be efficiently brought into contact with the gas. Therefore, the adsorption device 4 can improve the adsorption amount of the adsorbent 5 .
- the adsorption device 4 can efficiently regenerate the adsorbent 5 .
- the material of the holder body 80 includes at least one of paper and resin. This makes it possible to reduce the weight of the adsorption device 4 and reduce the manufacturing cost. Also, the suction device 4 can easily process the holder body 80 into a desired shape. In addition, since the material of the holder main body 80 includes at least one of paper and resin, the holder main body 80 can be made of a material with low thermal conductivity. Thereby, when the adsorption device 4 heats the adsorption material 5 , the adsorption material 5 can be kept warm by the holder main body 80 .
- the adsorption device 4 keeps the adsorbent 5 warm to facilitate the release of the target to be adsorbed from the adsorbent 5 and efficiently regenerate the adsorbent 5 .
- Such an effect is particularly effective, for example, when the temperature drops when the adsorbent 5 undergoes a desorption reaction that releases a predetermined component.
- the adsorbent 5 contains a polymer compound 7 having a functional group 7b that adsorbs and releases a predetermined component and a resin skeleton directly or indirectly bonded to the functional group 7b. This can prevent the adsorbent 5 from volatilizing and disappearing. Therefore, the adsorption device 4 can maintain the adsorption performance of the adsorbent 5 favorably while regenerating the adsorbent 5 .
- the pressure loss when air is passed through the covering material 81 at a flow rate of 1 m/sec is a value in the range of 5 Pa or more and 30 Pa or less.
- the adsorption device 4 prevents the adsorption material 5 held in each cell 80a from falling off from the holder main body 80 by the coating material 81, ensures good air permeability, and removes the adsorption material 5 from the gas. can be effectively contacted.
- the covering material 81 contains a nonwoven fabric.
- This nonwoven fabric contains at least one of PP, PE, and PET.
- the adsorption device 4 can improve the degree of freedom in designing the covering material 81 .
- the nonwoven fabric contains at least one of PP, PE, and PET
- the nonwoven fabric and the holder main body 80 can be relatively easily joined by heat welding or the like without using an adhesive. Thereby, the adsorption device 4 can be simplified in structure and reduced in weight.
- the basis weight of the covering material 81 is a value in the range of 10 g/m 2 or more and 90 g/m 2 or less.
- the adsorption device 4 can efficiently bring the adsorbent 5 into contact with the gas while preventing the adsorbent 5 held in each cell 80 a from falling off from the holder body 80 by the covering material 81 .
- the adsorption device 4 has a pressure loss in the range of 40 Pa or more and 500 Pa or less when air is passed from the side of the inlet 80c to the side of the outlet 80d at a flow rate of 1 m/sec. Thereby, the adsorption device 4 can further improve the air permeability of each cell 80a.
- the adsorption device 4 also includes an adhesive 82 that bonds the covering material 81 and the holder body 80, and the adhesive 82 includes at least one of thermoplastic resin and elastomer.
- the adsorption device 4 can firmly adhere the covering material 81 to the holder body 80 with the adhesive 82 , and further prevent the adsorption material 5 from coming off the holder body 80 . Therefore, the adsorption device 4 can maintain good durability.
- the air conditioner 1 keeps the carbon dioxide concentration in the room at a low concentration, the carbon dioxide generated during the regeneration of the adsorbent 5 may be discharged outdoors.
- the pair of covering materials 81 may not be welded to each other, and may be adhered with an adhesive, for example. In this case, for example, the coating material 81 can expand the options for its material.
- FIG. 4 is a schematic diagram showing the configuration of an adsorption device 104 according to a first modified example.
- the adsorption device 104 comprises an adsorption material 5 and a holder 108 .
- the holder 108 has a holder body 180 , a covering material 181 and an adhesive material 182 .
- the holder body 180 includes a plurality of rectangular cells 180a in plan view.
- the adsorption device 104 has a rectangular cross-sectional shape of the internal space 180b in the direction of gas flow from the inlet 180c to the outlet 180d.
- the holder 108 is formed, for example, by using a plate material and processing it so as to cut out a portion corresponding to the internal space 180b.
- Such an adsorption device 104 can also provide the same effects as the adsorption device 4 .
- the cross-sectional shape of the flow path of the internal space 180b is rectangular in the first modified example, it may be at least one of a circle and a polygon including a rectangle such as a rectangle. Moreover, the channel cross-sectional shape of the internal space 180b may have an irregular shape. In other words, the holder main body 180 may be formed with a plurality of cells 180a having internal spaces 180b with flow path cross-sectional shapes having different shapes or different cross-sectional areas.
- the covering material 81 contains a metal mesh.
- the material of this metal mesh is, for example, stainless steel such as SUS304.
- the adsorption device 4 according to the second modification can improve the durability of the covering material 81 .
- the adsorption device 4 according to the second modification can improve the thermal conductivity of the covering material 81 . Therefore, in the adsorption device 4 according to the second modification, for example, when the adsorbent 5 is regenerated by heating, the adsorbent 5 is heated from the outside of the adsorption device 4 through the covering material 81, and the adsorbent 5 can be easily regenerated. .
- the adsorbent 5 of this modified example is a powder having an average particle size in the range of 400 ⁇ m or more and 1.3 mm or less.
- the covering material 81 includes a mesh having a mesh diameter in the range of 50 (mesh/inch) to 200 (mesh/inch). Another example of this mesh diameter is a value in the range of 65 (mesh/inch) or more and 200 (mesh/inch) or less.
- the material of the holder body 80 includes at least one of metal and ceramic.
- this metal include those with excellent thermal conductivity (for example, aluminum, copper, and alloys containing at least one of these), but are not limited to these.
- the holder main body 80 of this modification has a thermal conductivity in the range of 50 W/mK or more and 500 W/mK or less.
- the material of the holder body 80 includes at least one of metal and ceramic, so that the holder body 80 can be made of a material with relatively high thermal conductivity.
- the adsorption device 4 according to the third modification can heat the adsorbent 5 via the holder main body 80 when heating the adsorbent 5 . Therefore, for example, when the adsorbent 5 releases a predetermined component by heating, the adsorption device 4 according to the third modification satisfactorily heats the adsorbent 5 to facilitate the release of the target to be adsorbed from the adsorbent 5. 5 can be efficiently reproduced. Such an effect is particularly effective, for example, when the temperature drops when the adsorbent 5 undergoes a desorption reaction that releases a predetermined component, similarly to the embodiment.
- the adhesive material 82 is omitted, and a pair of covering materials 81 are adhered to the holder main body 80 by thermal welding.
- the material of the holder main body 80 includes paper.
- the weight of the adsorption device 4 according to this modification can be reduced by omitting the adhesive 82 .
- the adsorption device 4 according to this modified example can improve manufacturing efficiency.
- the present disclosure is not limited to the above embodiments and modifications, and the configuration can be changed, added, or deleted without departing from the scope of the present disclosure.
- the use of the air conditioner is not limited to indoor use, and may be other uses such as factory exhaust gas treatment, agricultural facility use, vehicle-mounted use, and the like.
- the application apparatus provided with the adsorption device according to the present disclosure is not limited to air conditioners.
- the adsorption target of the adsorbent according to the present disclosure is not limited to carbon dioxide, and may be water or other components contained in gas.
- the air conditioner may be of a desiccant system.
- the adsorbent according to the present disclosure may be regenerated by a method other than heating.
- the adsorbent according to the present disclosure may not be powder as long as it is formed in a shape that can be accommodated in the internal space according to the present disclosure of each cell according to the present disclosure. Further, when the adsorbent according to the present disclosure is powder, the shape and size of the particles may not be the same.
- dressings according to the present disclosure are not limited to including non-woven fabrics, and may include, for example, woven fabrics.
- the shape of the holder main body according to the present disclosure is not limited to a plate shape, and may be other shapes such as a rectangular parallelepiped shape and a columnar shape.
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Abstract
Description
図1は、実施形態に係る空気調和装置1の室内機10の構成を示す斜視図である。空気調和装置1は、吸着デバイス4を備える応用装置の一例である。図1に示される空気調和装置1は、一例として、室内機10と、不図示の室外機とを備える。空気調和装置1では、冷媒が室内機10と室外機との間を循環する。室内機10は、冷媒と室内の空気とを熱交換する熱交換器2と、室内の空気を取り込んで熱交換器2により熱交換した後に排出する送風機構3とを備える。
次に、本実施形態の変形例を説明する。図4は、第1変形例に係る吸着デバイス104の構成を示す概要図である。吸着デバイス104は、吸着材5と、ホルダ108とを備える。ホルダ108は、ホルダ本体180、被覆材181、及び接着材182を有する。ホルダ本体180は、平面視において矩形の複数のセル180aを含む。吸着デバイス104は、導入口180cから排出口180dへ向かう気体の流通方向における内部空間180bの流路断面形状が、矩形である。ホルダ108は、例えば板材を用い、内部空間180bに相当する部分を切り抜くように加工して形成される。このような吸着デバイス104によっても、吸着デバイス4と同様の効果が得られる。
2 熱交換器
3 送風機構
4 吸着デバイス
5 吸着材
6 再生機構
7 高分子化合物
7a 基材
7b 官能基
8 ホルダ
10 室内機
80 ホルダ本体
80a セル
80b 内部空間
80c 導入口
80d 排出口
80e 外壁部
80f 内壁部
81 被覆材
82 接着材
104 吸着デバイス
108 ホルダ
180 ホルダ本体
180a セル
180b 内部空間
180c 導入口
180d 排出口
181 被覆材
182 接着材
Claims (14)
- 繰り返し気体の所定成分を吸着及び放出する吸着材と、
前記吸着材を気体と接触可能に保持するホルダと、を備え、
前記ホルダは、
前記吸着材を収容する内部空間と、前記内部空間に気体を導入する導入口と、前記内部空間を通過した気体を排出する排出口と、を有する複数のセルが形成されたホルダ本体と、
通気性を有し、前記セルの前記導入口と前記排出口とを覆う被覆材と、を有する、吸着デバイス。 - 前記導入口から前記排出口へ向かう気体の流通方向における各々の前記内部空間の流路断面積が、0.5cm2以上10.0cm2以下の範囲の値である、請求項1に記載の吸着デバイス。
- 前記ホルダ本体の材質が、紙及び樹脂のうちの少なくともいずれかを含む、請求項1又は2に記載の吸着デバイス。
- 前記ホルダ本体の材質が、金属及びセラミックのうちの少なくともいずれかを含む、請求項1又は2に記載の吸着デバイス。
- 前記ホルダ本体の熱伝導率が、50W/mK以上500W/mK以下の範囲の値である、請求項4に記載の吸着デバイス。
- 前記吸着材が、前記所定成分を吸着及び放出する官能基と、前記官能基と直接又は間接的に結合した樹脂骨格とを有する高分子化合物を含む、請求項1~5のいずれか1項に記載の吸着デバイス。
- 前記被覆材に空気を流速1m/秒で通過させたときの圧力損失が、5Pa以上30Pa以下の範囲の値である、請求項1~6のいずれか1項に記載の吸着デバイス。
- 前記被覆材が、不織布を含む、請求項1~7のいずれか1項に記載の吸着デバイス。
- 前記不織布は、ポリプロピレン(PP)、ポリエチレン(PE)、ポリエチレンテレフタレート(PET)のうちの少なくともいずれかを含む、請求項8に記載の吸着デバイス。
- 前記被覆材の目付量が、10g/m2以上90g/m2以下の範囲の値である、請求項1~9のいずれか1項に記載の吸着デバイス。
- 前記被覆材が、金属メッシュを含む、請求項1~7のいずれか1項に記載の吸着デバイス。
- 前記導入口側から前記排出口側まで空気を流速1m/秒で通過させたときの圧力損失が、40Pa以上500Pa以下の範囲の値である、請求項1~11のいずれか1項に記載の吸着デバイス。
- 前記吸着材は、平均粒径が400μm以上1.3mm以下の範囲の値である粉体である、請求項1~12のいずれか1項に記載の吸着デバイス。
- 前記被覆材は、メッシュ径が、50(mesh/inch)以上200(mesh/inch)以下の範囲の値であるメッシュを含む、請求項13に記載の吸着デバイス。
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Citations (5)
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JPH04305213A (ja) * | 1990-12-11 | 1992-10-28 | Kuraray Chem Corp | 吸着性フィルター |
JPH10137529A (ja) * | 1996-11-07 | 1998-05-26 | Nimura Kagaku Kogyo Kk | 空気清浄化用フィルター |
JP2000326724A (ja) | 1999-05-18 | 2000-11-28 | Equos Research Co Ltd | 車載用活性炭フィルタ |
JP2001145816A (ja) * | 1999-11-19 | 2001-05-29 | Ebara Corp | 気体浄化用フィルタ |
WO2020191197A1 (en) * | 2019-03-19 | 2020-09-24 | Basf Corporation | Filter unit for adsorbing water and gas and systems and methods of use thereof |
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2021
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- 2022-04-07 AU AU2022281691A patent/AU2022281691A1/en active Pending
- 2022-04-07 CN CN202280036574.7A patent/CN117355369A/zh active Pending
- 2022-04-07 EP EP22811047.4A patent/EP4349450A1/en active Pending
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH04305213A (ja) * | 1990-12-11 | 1992-10-28 | Kuraray Chem Corp | 吸着性フィルター |
JPH10137529A (ja) * | 1996-11-07 | 1998-05-26 | Nimura Kagaku Kogyo Kk | 空気清浄化用フィルター |
JP2000326724A (ja) | 1999-05-18 | 2000-11-28 | Equos Research Co Ltd | 車載用活性炭フィルタ |
JP2001145816A (ja) * | 1999-11-19 | 2001-05-29 | Ebara Corp | 気体浄化用フィルタ |
WO2020191197A1 (en) * | 2019-03-19 | 2020-09-24 | Basf Corporation | Filter unit for adsorbing water and gas and systems and methods of use thereof |
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