WO2023068651A1 - 전기화된 파이버 흡착제의 제조방법 및 전기 및 전자기 스윙 흡착 공정 - Google Patents
전기화된 파이버 흡착제의 제조방법 및 전기 및 전자기 스윙 흡착 공정 Download PDFInfo
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- WO2023068651A1 WO2023068651A1 PCT/KR2022/015484 KR2022015484W WO2023068651A1 WO 2023068651 A1 WO2023068651 A1 WO 2023068651A1 KR 2022015484 W KR2022015484 W KR 2022015484W WO 2023068651 A1 WO2023068651 A1 WO 2023068651A1
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- 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
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Definitions
- the present invention relates to an electrified fiber adsorbent, a manufacturing method thereof, and an electric and electromagnetic swing adsorption process using the same, and more particularly, an electrified fiber adsorbent formed of a porous support including an adsorbent and a conductive material, and manufacturing thereof It relates to a method and an electric and electromagnetic swing adsorption process using the same.
- Direct air capture can consider temperature swing adsorption (TSA) and electric swing adsorption (ESA) rather than pressure swing adsorption, and these adsorption processes handle low carbon dioxide partial pressures of less than 10 kPa. effective in the regeneration process.
- TSA temperature swing adsorption
- ESA electric swing adsorption
- the existing temperature swing adsorption using steam lowers the stability of the adsorbent or rapidly lowers the purity of the product, and has limitations because it requires a lot of energy to convert water into steam. There is a difficulty in post-treatment of carbon dioxide.
- Korean Patent Publication No. 10-2018-0117023 discloses an amine-functionalized MOF-based carbon dioxide adsorbent containing a binder
- Korean Patent Publication No. 10-2020-0145906 discloses a structured metal-organic skeleton for capturing carbon dioxide A sieve fiber adsorbent and a manufacturing method thereof are disclosed.
- Patent Publication No. 10-2018-0117023 Although the CO2 adsorption amount was successfully increased through amine functionalization of the MOF-based adsorbent, an effective solution for molding and processing for use in the actual process of the adsorbent was not presented. there is.
- Patent Publication No. 10-2020-0145906 solves the carbon dioxide adsorbent manufacturing method and the molding method simultaneously through the manufacturing method of the metal-organic framework fiber adsorbent, but in order to use the fiber adsorbent, high-temperature steam or purge gas is required. Temperature swing adsorption is required, and there is a geographical limitation that the adsorption system can only be installed in a factory area where steam or purge gas can be supplied, so it is not suitable for adsorption of carbon dioxide in the atmosphere.
- the inventors of the present invention have made diligent efforts to solve the above problems, and have prepared an electrified fiber adsorbent formed of a porous support containing an adsorbent and a conductive material, and the prepared fiber adsorbent has a relatively low concentration, especially in the air. It was confirmed that carbon dioxide can be efficiently adsorbed, an energy source required for carbon dioxide desorption is free, and energy efficiency is excellent because direct heating of the adsorbent is possible, and the present invention was completed.
- An object of the present invention is to provide an electrified fiber adsorbent and a manufacturing method thereof.
- the present invention provides an electrified fiber adsorbent formed of a porous support containing an adsorbent and a conductive material.
- a conductive layer is formed on the surface of the bore or the shell of the support, comprising the step of spinning a dope solution containing an adsorbent and a support and then immersing in a solution containing a conductive material.
- a method for preparing an electrified fiber adsorbent comprising the step of spinning a dope solution containing an adsorbent and a support and then immersing in a solution containing a conductive material.
- the present invention also provides an electrified fiber adsorbent in which a conductive material is formed in the bore of the support, which includes the step of spinning a dope solution containing an adsorbent and a support, and then adding a conductive material to the bore of the spinneret and then spinning. Provides a manufacturing method of.
- the present invention also provides a method for manufacturing an electrified fiber adsorbent in which a conductive material such as an adsorbent is included in the support including the step of spinning a dope solution including an adsorbent, a conductive material, and a support.
- the present invention also provides an electrified fiber adsorbent module for electric and electromagnetic swing adsorption of carbon dioxide, which includes a plurality of the electrified fiber adsorbents.
- the present invention also includes the steps of (a) contacting a carbon dioxide-containing gas with the electrified fiber adsorbent to adsorb the carbon dioxide; and (b) desorbing the adsorbed carbon dioxide by applying a voltage to the fiber adsorbent.
- the present invention also includes the steps of (a) adsorbing the carbon dioxide by contacting a carbon dioxide-containing gas with the fiber adsorbent; (b) desorbing the adsorbed carbon dioxide by applying a voltage to the fiber adsorbent; and (c) repeating steps (a) and (b).
- FIG. 1 schematically shows the configuration of a fiber adsorbent according to an embodiment of the present invention
- FIG. 3 is a SEM image of a fiber adsorbent having a conductive layer formed on the surface of the shell according to an embodiment of the present invention
- FIG. 4 is a 3D digital microscope image of a fiber adsorbent having a conductive layer formed on the surface of the shell according to an embodiment of the present invention
- FIG. 5 is an image showing the temperature according to the applied voltage of the fiber adsorbent having a conductive layer formed on the surface of the shell according to an embodiment of the present invention
- 6 and 7 are graphs showing the carbon dioxide adsorption amount under isothermal conditions of the fiber adsorbent according to an embodiment of the present invention
- FIG. 8 is a graph showing the amount of carbon dioxide adsorbed under isothermal conditions for the fiber adsorbent according to an embodiment before and after measuring the thermal properties of the present invention
- FIG. 9 is a SEM image of a fiber adsorbent having a Cu bulk wire formed according to an embodiment of the present invention.
- 9a, b, d, and e are SEM images of a fiber adsorbent including mesoporous silica and having a Cu bulk wire manufactured according to an embodiment of the present invention.
- 9c and 9f are digital images of a fiber adsorbent having a Cu bulk wire formed according to an embodiment of the present invention.
- 10A is a CO 2 breakthrough curve of a polymer fiber (NbOFFIVE-1-Ni) having a Cu bulk wire manufactured according to an embodiment of the present invention.
- 10B is a graph showing a change in temperature according to current per fiber of a fiber adsorbent having a NiCr bulk wire manufactured according to an embodiment of the present invention and containing a metal-organic framework NbOFFIVE-1-Ni.
- FIG. 11 is a CO 2 breakthrough curve of a fiber adsorbent having a Cu bulk wire formed according to another embodiment of the present invention.
- FIG. 12 is a diagram showing a dry-jet wet-quenching spinning machine used in an embodiment of the present invention.
- FIG. 13 is a diagram illustrating the principle of the induction heating method of the electrified fiber adsorbent described in the present invention.
- the fiber adsorbent formed of a porous support including an adsorbent and a conductive material can efficiently adsorb relatively low concentrations of carbon dioxide, especially in the air, and the energy source required for desorption of carbon dioxide is free, and direct heating of the adsorbent is possible. It was to be confirmed that the energy efficiency was excellent.
- the present invention relates to an electrified fiber adsorbent formed of a porous support comprising an adsorbent and a conductive material.
- an electrified fiber adsorbent formed of a porous support containing an adsorbent and a conductive material is provided.
- a conductive layer may be formed on the surface of the bore or the shell of the support (Route 1 in FIG. 1), or a conductive material may be formed inside the support (Route 2 in FIG. 1). .
- the conductive material in the present invention may be formed in the form of a conductive layer by coating on the surface of the bore or shell of the support. Alternatively, it may be placed in the bore of the support by spinning together with the bore during the spinning process. At this time, it may be in the form of a bulk wire penetrating the entire fiber. Alternatively, it may be included in a dope solution and placed inside the support by spinning.
- the 'monolithic structure' in the present invention means a cylindrical structure filled with the inside, not a hollow fiber structure.
- the fiber adsorbent according to the present invention includes a porous support for supporting the adsorbent and the conductive material.
- the support may be an organic support (polymer support) or an inorganic support, and the inorganic support (inorganic material) may be formed through a sintering process.
- the support may be cellulose, cellulose acetate, polymer of intrinsic microporosity (PIM), polyethylene, polypropylene, polyethylene glycol, polyethylene terephthalate, polyvinylidene fluoride, polyacrylonitrile, polymethylmetha It may be at least one selected from the group consisting of acrylate, polyimide, polyamideimide, polyetherimide, nickel oxide, copper oxide, alumina, zinc oxide, and silicon carbide.
- PIM intrinsic microporosity
- polyethylene polypropylene
- polyethylene glycol polyethylene terephthalate
- polyvinylidene fluoride polyacrylonitrile
- polymethylmetha It may be at least one selected from the group consisting of acrylate, polyimide, polyamideimide, polyetherimide, nickel oxide, copper oxide, alumina, zinc oxide, and silicon carbide.
- the support may have a hollow structure or a monolithic structure.
- the adsorbent is a metal-organic framework (MOF), a porous organic molecule (Porous Organic Cage, POC), an organic framework (Covalent Organic Frameworks, COF), a porous coordination polymer (Porous Coordination Polymers, PCP), It may be one or more selected from the group consisting of metal-organic polyhedra (MOP), zeolite, silica, activated carbon, carbon material, and metal oxide, wherein the carbon material is carbon nanotube or graphene. It may be a porous carbon material.
- the materials used as the adsorbent are infiltrated or bonded with an amine-based compound (R-NH2 or R2-NH or R3-N, R is a hydrocarbon functional group) to improve carbon dioxide adsorption capacity can make it
- the metal-organic framework may include a metal node and an organic ligand, wherein the metal node is Mg, Al, Y, Sc, Mo, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr , Cd, Ca, Pd, Pt, Au, Ag, Ru, Gd, Eu, Tb, and may be one or more selected from the group consisting of Nb, and the organic ligand is 4,4'-dioxido-3,3 '-Biphenyldicarboxylate, 2,5-dioxido-1,4-benzenedicarboxylate, 1,5-dioxide-2,6-naphthalenedicarboxylate, 4,4'-dioxido-3 ,3'-triphenyldicarboxylate, 2,5-dihydroxyterephthalic acid, 4-(4-carboxy-3-hydroxy-phenyl)-2-hydroxy-benzoic acid, 4,4'-ethynylenedibenzoic acid , 1,3,5-
- the adsorbent included in the support may chemically or physically adsorb carbon dioxide.
- the adsorbent is included in the support, in the packed bed adsorption tube using only the adsorbent, the adsorbent interferes with the flow of air, resulting in a pressure drop phenomenon. As a result, the total cycle time for adsorption is increased and the efficiency is improved. It can solve the problem that can be low.
- this type of adsorbent has a better mass transfer coefficient than a monolith type, and thus adsorption can occur more quickly, thereby enabling efficient carbon dioxide adsorption.
- the reason for forming the adsorbent into a fiber form is that higher pressure drop requires fan overload or higher fan operating costs.
- the fluid passes through a tortuous and twisted passage, and a pressure drop occurs due to collision with the adsorbent inside the column.
- a more meandering passage is generated, and a higher pressure is required for driving due to a pressure drop due to this, and more energy is consumed at the suction port.
- the fluid proceeds along the packed bed at the same pressure as the driving pressure of the fiber adsorbent column, it will proceed along the column at a significantly lower flow rate than that of the fiber adsorbent, which affects the fluid-adsorbent contact boundary. , the adsorption efficiency gradually decreases from the inlet to the outlet in the adsorption column.
- the monolithic adsorption bed provides a fluid flow passage of a straight structure, resulting in a minimum pressure drop. It has a higher adsorption efficiency according to the same adsorption capacity throughout the column, thereby ensuring higher energy efficiency.
- the amount of adsorbent per unit volume is low compared to that of the fiber adsorbent, which is less important on the laboratory scale, but when viewed on an industrial scale, there is no choice but to show a large difference in the size of the overall adsorption module and adsorption tower. .
- the adsorbent may be included in the support in an amount of 1 wt% to 80 wt%, preferably 20 wt% to 70 wt%, and more preferably 30 wt% to 50 wt%.
- the adsorbent When the adsorbent is included in the support in an amount of less than 1 wt%, there may be a problem that the CO 2 adsorption performance of the fiber adsorbent may be low. A problem in that the spinning process is difficult and the resulting polymer fiber adsorbent is brittle may occur.
- the fiber adsorbent provided in the present invention may include a conductive material.
- the conductive material may be formed on the bore surface or the shell surface of the support, and may be included together with the adsorbent when loading the adsorbent into the support, and the bulk wire may be placed in the bore of the support by spinning the dope solution and the bulk wire together. It is also possible to form the conductive material in a form included in the support by a method such as forming.
- the conductive material may be at least one selected from the group consisting of conductive porous structures, conductive metals and alloys, conductive 2D materials, and conductive carbon materials.
- the conductive porous structure may be an organic framework (Covalent Organic Framework, COF), a metal-organic framework (MOF), or a carbon-based porous material
- the conductive metal and alloy may be silver, copper, annealing Annealed copper, gold, aluminum, calcium, tungsten, zinc, cobalt, nickel, ruthenium, lithium, iron, platinum, tin, gallium, niobium, carbon steel, lead, gallinstan, titanium, grain oriented electrical steel), manganin, constantan, stainless steel, mercury, manganese, and nichrome 1 selected from silicon carbide, iron aluminum, tantalum, molybdenum, molybdenum disilicide, lanthanum chromite, and barium titanate May include more than one species.
- the conductive 2D material may be molybdenum disulfide (MoS2), phosphorene, bismuthene, MXene or tungsten disulfide (WS2), and the conductive carbon material may be graphene, graphene oxide, graphite (graphite), carbon black (carbon black) and may be at least one selected from the group consisting of carbon nanotubes.
- MoS2 molybdenum disulfide
- WS2 tungsten disulfide
- the conductive carbon material may be graphene, graphene oxide, graphite (graphite), carbon black (carbon black) and may be at least one selected from the group consisting of carbon nanotubes.
- the conductive material may be in the form of a particle or a bulk wire, and the particle form may be physically connected to allow current to flow.
- the conductive material may be in the form of a nanowire of a conductive material.
- the conductive material may be in the form of a bulk wire of conductive material.
- the conductive material is preferably a material that generates a Joule heating effect or resistance heating and induction heating effects.
- the conductive material may be coated on the shell surface of the support.
- the conductive material may be positioned in the form of a bulk wire in the bore of the support.
- the resistance of the conductive material may be 0.001 ⁇ /m to 10000 ⁇ /m, more preferably 0.5 ⁇ /m to 35 ⁇ /m based on embodiments.
- the resistance of the conductive material is as low as less than 0.001 ⁇ /m, a problem in that an excessive current is required to generate heat may occur, and as a result, the polymer support or adsorbent may be collapsed.
- the unit resistance of the conductive material is higher than 1000 ⁇ /m, excessive voltage may be required to generate sufficient heat.
- the resistance value of such a conductive layer can be appropriately controlled by adjusting the selection of a conductive material, an electrical connection structure between a plurality of conductive materials, the thickness and length of the conductive layer, and the like.
- the insulator coating may be enamel, paraffin, polyethylene, etc., and it may be manufactured by coating the bulk wire before the spinning process, or the bulk wire and the insulator solution may be spun together in the bore during the spinning process. Through this, by avoiding direct contact between the bulk wire and the support, the current flow is maintained in the wire as it is, while the heat generated by the Joule heating and resistance heating effects in the wire can be effectively transferred to the fiber adsorbent.
- the induction heating method is very similar to the resistance heating method of the present invention.
- the basic principle of induction heating is resistance heating by induction current. As shown in FIG. 13, when the direction of an external current is changed at a high frequency, the direction of the magnetic field generated from the current changes rapidly and affects the change of the magnetic field accordingly. The eddy current continues to flow through the electromagnetic material that receives the heat.
- a material capable of generating an induced current is called a susceptor.
- the susceptor refers to electromagnetic materials capable of generating eddy currents under the influence of a magnetic field, and carbon fiber is a typical example. If manufactured in the method of Route 2, in which carbon fibers are mixed with a dope solution and spun, a fiber adsorbent capable of induction heating is created.
- susceptors other than carbon fiber can be magnetic materials, and in particular, most can be used if only the Curie temperature, which is the temperature at which magnetism is lost, is higher than the temperature at which the susceptor is to be detached.
- 1) chromium oxide (CrO 2 , TCUrie 113°C)
- iron oxide ores 1 goethite (Goethite, ⁇ -FeO(OH), 120°C), 2 lepidocrocite ( ⁇ -FeO (OH), 196°C), 3 Hematite ( ⁇ -Fe2O3, 680°C), 4 Maghemite (Maghemite, ⁇ -Fe 2 O 3 , 617°C), 5 Magnetite (Fe 3 O 4 , 575 °C), 6 titanite (Ilmenite, FeTiO, 233 °C), and 3) pure metal materials (1 Iron, Fe, 768 °C, 2 Cobalt, Co, 1121 °C, etc.) can be main
- Fiber adsorbents are commercially available adsorbent platforms that are easy to mass-produce, but the heat capacity of polymers is generally high for use in carbon dioxide adsorption and desorption. Since the heat capacity of the polymer is high, the heat capacity of the fiber adsorbent tends to be high, and accordingly, a lot of heat and energy are required to raise the desired desorption temperature.
- the heat capacity control concept can be introduced to solve the problem.
- Carbon materials such as Super P are stable and easy to manufacture as a fiber adsorbent by mixing them in a dope solution, and since their heat capacity is very low, if these auxiliary materials are mixed and manufactured as a fiber adsorbent, a fiber adsorbent with a low heat capacity can be produced.
- the auxiliary materials are also excellent in heat transfer efficiency, enabling uniform temperature distribution within the fiber adsorbent.
- the present invention is a conductive layer on the bore surface and the shell surface of the support, which includes the step of spinning a dope solution containing an adsorbent and a support (spinning step) and then immersing in a solution containing a conductive material (coating step).
- a method for manufacturing an electrified fiber adsorbent which specifically includes spinning a dope solution containing an adsorbent and a support to solidify it through phase separation, and then immersing it in a solution containing a conductive material. It relates to a method for manufacturing an electrified fiber adsorbent in which a conductive layer is formed on the bore surface or shell surface of the support.
- an electrified fiber adsorbent in which a conductive layer is formed on the shell surface of the support can be manufactured through the two steps of the spinning step and the dip coating step (Route 1 in FIG. 1).
- the manufacturing method of the fiber adsorbent according to the present invention includes spinning a dope solution containing an adsorbent and a support and then immersing it in a solution containing a conductive material.
- a dope solution containing an adsorbent and a support is spun to obtain a support containing an adsorbent.
- the spinning dope solution may include an adsorbent and a polymer.
- the polymer may be included in an amount of 5 wt% to 50 wt%, preferably 7 wt% to 30 wt%, and more preferably 8 wt% to 15 wt%, based on the total weight of the dope solution.
- the adsorbent may be included in an amount of 10 wt% to 60 wt%, preferably 20 wt% to 55 wt%, based on the total weight of the dope solution. If the adsorbent is included in less than 10 wt%, there is a problem that the CO 2 adsorption performance of the fiber adsorbent may be poor, and if it is included in 60 wt% or more, the viscosity of the dope solution is high, making the spinning process difficult and the resulting fiber adsorbent brittle. The problem is that it is easy.
- the dope solution may further include a pore forming agent.
- the pore former may be, for example, LiNO3, PVP, or CaCO3, but is not limited thereto.
- the pore forming agent may be included in an amount of 0.1 wt% to 30 wt%, preferably 0.1 wt% to 5 wt%.
- the dope solution may include a solvent and a non-solvent.
- the solvent may be an organic solvent, for example, N-methyl-2-pyrrolidone (NMP), N, N-dimethylacetamide. (DMAc), hexamethylphosphoramide (HMPA), N,N,N',N'-tetramethyl urea (TMU), N,N-dimethylformamide (DMF), or mixtures thereof, but It is not limited.
- the solvent may be included in an amount of 10 wt% to 70 wt%, preferably 30 wt% to 60 wt%, based on the total weight of the dope solution.
- the non-solvent may be water, alcohol, or glycol, but is not limited thereto.
- the non-solvent may be included in an amount of 0.1 wt% to 40 wt%, preferably 0.1 wt% to 10 wt%, based on the total weight of the spinning dope-containing solution.
- This step is performed by a general spinning process. In one embodiment, it may be performed by a dry and wet spinning process using the apparatus shown in FIG. 12 .
- the wet and dry spinning process is largely i) spinning a dope solution from a spinneret ii) immersing the spun dope solution in a non-solvent iii) a step in which the dope solution entered into the non-solvent is separated into two phases and solidified Divided.
- the spun fiber adsorbent precursor may be a monolithic fiber or a hollow fiber.
- a hollow fiber When the bore fluid is spun together with the dope solution during the dope spinning process, a hollow fiber may be formed, and when the bore fluid is not spun, a monolithic fiber may be formed.
- the bore fluid may be NMP/H 2 O.
- the method for preparing the fiber adsorbent includes immersing the support in a solution containing a conductive material.
- the manufacturing method of the fiber adsorbent may further include treating a shell surface of the fiber adsorbent before immersing the support in a solution.
- adhesion between the conductive material and the support may be improved by subjecting the support to UV ozone treatment to form oxygen functional groups on the shell surface of the support.
- the step of immersing the support in a solution containing a conductive material may be repeatedly performed. By repeating the above steps, the conductive layer can be better formed.
- a fiber adsorbent comprising spinning a dope solution including an adsorbent and a support, but spinning a conductive material in the bore of the spinneret or adding a conductive material to the dope solution and spinning (spinning step)
- a manufacturing method specifically, of the support comprising the step of spinning a dope solution containing an adsorbent and a support, adding a conductive material to the bore or core side of the spinneret and then spinning and solidifying through phase separation. It relates to a method for manufacturing an electrified fiber adsorbent in which a conductive material is formed in a bore or core.
- an electrified fiber adsorbent in which a bulk wire is formed in the bore of the support body through a single spinning step by spinning a bulk wire instead of the bore fluid (Route in FIG. 1). 2).
- the composition of the dope solution may be the same as in Route 1.
- the composition of the dope solution may further include a conductive material.
- the manufacturing process of the electrified fiber adsorbent formed of the support including the conductive material of the present invention is summarized as follows.
- the adsorption method of the fiber adsorbent does not stop here, but 1) chemically adds a chemical functional group to the support or adsorbent and uses it for adsorption, or 2) physically or physically adds a chemical functional group (eg, amine functional group) to the porous structure of the support or adsorbent. It can be chemically added and used for adsorption, or 3) a solid adsorbent and a combination of two or more of the above 1) 2).
- a chemical functional group eg, amine functional group
- the reaction of attaching PEI having CO 2 adsorption performance to the PAI polymer chain through the amine ring-opening reaction can dramatically improve the CO 2 adsorption capacity of PAI.
- the support PAI used herein is cellulose, cellulose acetate, polymer of intrinsic microporosity (PIM), polyethylene, polypropylene, polyethylene glycol, polyethylene terephthalate, polyvinylidene fluoride, polyacrylonitrile, and polymethylmethacrylate.
- PIM-PEI can be cited as an example.
- PIM it has micropores of less than 2 nm, and CO 2 adsorption capacity can be improved by impregnating an adsorbent into the micropores.
- the adsorbent used may be an amine-based chemical such as polyethyleneimine, tetraethylenepentamine, ethyleneamine, or p-xylenediamine, but is not limited thereto.
- another aspect of the present invention relates to an electrified fiber adsorbent module including a plurality of the fiber adsorbents.
- the fiber adsorbent module provided in the present invention is applicable to all of the above-described fiber adsorbent, but will not be described redundantly.
- adsorbing carbon dioxide by contacting a gas with the fiber adsorbent; and desorbing the adsorbed carbon dioxide by applying a voltage to the fiber adsorbent.
- the present invention comprises the steps of (a) adsorbing carbon dioxide by contacting a carbon dioxide-containing gas with the fiber adsorbent; (b) desorbing the adsorbed carbon dioxide by applying a voltage to the fiber adsorbent; and (c) repeating steps (a) and (b).
- the carbon dioxide adsorption and desorption method provided in the present invention can be applied to all of the above-described fiber adsorbents, and will not be described redundantly.
- the carbon dioxide electric and electromagnetic swing adsorption method provided in the present invention includes the step of adsorbing carbon dioxide by bringing gas into contact with the fiber adsorbent.
- the gas may be 100% or less (pure carbon dioxide), 15% or less (flue gas), 1000 ppm or less (ultra-dilute stream) or 500 ppm (direct air capture).
- a shell and tube process may be performed in which a gas feed containing carbon dioxide is flowed to the side of the fiber adsorbent.
- the electric swing adsorption method of carbon dioxide provided in the present invention includes the step of desorbing the adsorbed carbon dioxide by applying a voltage to the fiber adsorbent.
- the energy source used for desorption is electricity, it is free as to where a heat source can be obtained, and has advantages in price and carbon footprint of energy production by using renewable energy.
- a voltage For desorption of carbon dioxide, it is preferable to apply a voltage to reach a temperature of 60°C to 250°C.
- step (c) may be repeated 2 to 500 times.
- Polyetherimide (PEI) was selected as the support and NbOFFIVE-1-Ni, a metal-organic framework, was selected as the adsorbent.
- the fiber adsorbent may be produced by the spinning parameters shown in Table 1 below, and the fiber adsorbent may have a hollow structure or a monolithic structure depending on the presence or absence of bore fluid flow.
- FIG. 2 shows a photograph and SEM of a hollow NbOFFIVE-1-Ni/polyetherimide (PEI) fiber adsorbent.
- the fiber adsorbent had a light blue color, and the MOF particles were uniformly loaded into the macropores of the polymer matrix. Large pores of several microns are found on the surface of the fiber adsorbent, which means that the fiber adsorbent has an open porous structure.
- Example 2 Formation of a conductive layer
- a conductive layer was formed on the surface of the shell through a dip coating process on the fiber adsorbents loaded with the MOFs according to Examples 1-1 to 1-5.
- the hydrophilicity/hydrophobicity of the support can act as an important variable in coating quality.
- Additives such as polyethyleneimine can be added to improve.
- the concentration of the solution, the immersion time, and the number of times of immersion affect the thickness and uniformity of the coating layer during the immersion process.
- the resistance of the electrified fiber adsorbent decreased in the range of 1 to 100 ohm per 1 cm depending on the coating conditions.
- Example 3 Adsorbent containing conductive material in wire form
- the fiber adsorbent according to this can be confirmed through route 2 in FIG.
- FIG. 9 A cross section of the fiber adsorbent prepared in this way was confirmed using an electron microscope (SEM), and the results are shown in FIG. 9 . According to FIG. 9 , it was confirmed that the polymer fiber was formed around the bulk wire, and the bulk wire was formed in contact with the surface of the bore of the polymer fiber.
- Polyamideimide (PAI, Torlon) was selected as the support, and NbOFFIVE-1-Ni, a metal-organic framework, was selected as the adsorbent.
- Fibers manufactured in the same format as the route 2 mentioned above undergo solvent replacement in distilled water for 72 hours, and then undergo a post-treatment process in which they are immersed in methanol and hexane for about 1 hour.
- the fabricated fibers were dried in a vacuum at 120 °C for 12 hours and then used in subsequent experiments.
- Torlon was selected as the support, and silica impregnated with polyethyleneimine (PEI) Mw ⁇ 800 was selected as the adsorbent.
- PEI polyethyleneimine
- the post-treatment process after spinning of the fiber adsorbent is the same as that of Examples 3-1 and 3-2. Then, the fiber adsorbent is further immersed in a 5-20 wt% PEI/methanol solution for 24 hours to penetrate the PEI chain into the silica pores, and the PEI remaining on the outside of the fiber is washed with hexane and then vacuumed at 120 ° C. It was used after drying for 12 hours.
- the specific gravity of MOF relative to the polymer is close to about 83 wt%, and the carbon dioxide adsorption amount is close to 0.9 at a concentration of 400 ppm, which is 75% of NbOFFIVE-1-Ni powder. It can be seen that it has a very good adsorption amount.
- Example 1-1, Example 1-4, and Example 1-5 as shown in FIG. 7, when the NbOFFIVE-1-Ni content is increased under the same condition of the PEI content as the support, the carbon dioxide adsorption amount It can be seen that it increases, and the case of Examples 1-5 shows the best carbon dioxide adsorption capacity.
- Example 2 when a coating layer is further formed on the surface of the shell, the mass of the entire fiber adsorbent increases due to the formation of the coating layer, so that the adsorption amount of the fiber adsorbent seems to decrease, but when calculated in consideration of the increased mass , it is confirmed that the adsorption capacity of NbOFFIVE-1-Ni itself in the fiber adsorbent remains the same.
- a conductive layer was formed on the adsorbents of Examples 1-5 as described in Example 2, and the thermal properties were confirmed by changing the coating conditions of the conductive layer as shown in Table 6 below.
- Example 6 In Table 6, in the case of Examples 2-1 and 2-2, the coating was performed three times with the coating solution, whereas in the case of Example 2-3, it was carried out twice, and in the case of Example 2-4, it was carried out only once.
- Example 2-1 represents a case in which the silver nanowires are relatively well dispersed in the coating solution
- Example 2-2 shows a case in which the silver nanowires are relatively well dispersed in the coating solution. indicates the case where it is not.
- the degree of dispersion can be controlled by varying various conditions during preparation of the coating solution.
- Example 2-1 in which the coating solution was coated with a solution having an excellent degree of dispersion of the silver nanowires, the resistance was remarkably low, and accordingly, it could be confirmed that the thermal effect occurred well even at a relatively low voltage. there was.
- the adsorbent of Example 2 was fixed on a glass substrate and connected to a device with a copper wire. A voltage was applied to the fiber adsorbent, and heat generated by the applied voltage was observed through a thermal imaging camera.
- Thermal properties of the fiber adsorbent optimized as in the examples were demonstrated at various applied voltages, which can be confirmed through FIG. 5 .
- the temperature of the fiber adsorbent increased as the applied voltage increased, and the excellent electrical conductivity of the fiber adsorbent enhanced the Joule heating effect.
- the CO 2 adsorption amount of the fiber adsorbent did not decrease even after measuring the thermal characteristics.
- the adsorption amount of the adsorbents of Examples 3-1 and 3-5 was measured according to the number of cycles and is shown in Tables 7 and 8.
- the electrified fiber adsorbent according to the present invention can efficiently adsorb carbon dioxide at a relatively low concentration, especially in the air, and has an effect of excellent energy efficiency because the energy source required for desorption of carbon dioxide is free and direct heating of the adsorbent is possible.
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Abstract
Description
Claims (33)
- 흡착제와 전도성 재료를 포함하는 다공성 지지체;로 형성되어 있는 전기화된 파이버 흡착제.
- 제1항에 있어서, 상기 지지체의 보어 표면 혹은 쉘 표면에 전도성층이 형성되어 있는 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제1항에 있어서, 상기 지지체의 보어에 전도성 재료가 형성되어 있는 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제1항에 있어서, 상기 지지체의 내부에 전도성 재료가 포함되어 있는 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제1항에 있어서, 상기 흡착제는 이산화탄소를 물리적 또는 화학적으로 흡착할 수 있는 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제1항에 있어서, 상기 흡착제는 금속-유기 골격체(Metal-Organic Framework, MOF), 다공성 유기 분자(Porous Organic Cage, POC), 유기 골격체(Covalent Organic Frameworks, COF), 다공성 배위중합체(Porous Coordination Polymers, PCP), 금속-유기다면체(Metal?Organic polyhedra, MOP), 제올라이트, 실리카, 활성탄, 탄소 소재 및 금속산화물로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제6항에 있어서, 상기 금속-유기 골격체는 금속 노드 및 유기 리간드를 포함하는 전기화된 파이버 흡착제.
- 제7항에 있어서, 상기 금속 노드는 Mg, Al, Y, Sc, Mo, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Cd, Ca, Pd, Pt, Au, Ag, Ru, Gd, Eu, Tb 및 Nb로 이루어진 군으로부터 선택되는 1종 이상이고, 상기 유기 리간드는 4,4'-디옥시도-3,3'-비페닐디카복실레이트, 2,5-디옥시도-1,4-벤젠디카복실레이트, 1,5-디옥사이드-2,6-나프탈렌디카복실레이트 4,4'-디옥시도-3,3'-트리페닐디카복실레이트, 2,5-디하이드록시테레프탈산, 4-(4-카복시-3-하이드록시-페닐)-2-하이드록시-벤조산, 4,4'-에티닐렌다이벤조산, 1,3,5-벤젠트리카르복실레이트, 2-브로모-1,4-벤젠디카르복실산, 피리딘-3-카르복실산, 2-메틸-1H-이미다졸, 4-메틸-5-이미다졸카르복스 알데하이드 및 바이페닐4,4'-디카르복실산(biphenyl-4,4'-dicarboxylic acid)으로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제7항에 있어서, 상기 금속-유기 골격체는 NbOFFIVE-1-Ni인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제6항에 있어서, 상기 탄소 소재는 다공성 탄소 재료인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제6항에 있어서, 상기 흡착제는 아민 계열의 화합물을 추가적으로 투입 또는 결합한 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제1항에 있어서, 상기 전도성 재료는 전도성 다공성 구조체, 전도성 금속 및 합금, 전도성 2D 재료, 및 전도성 탄소재료로 구성된 군으로부터 선택되는 1종 이상인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제12항에 있어서, 상기 전도성 재료의 저항은 0.5 Ω/m 내지 10,000 Ω/m인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제12항에 있어서, 상기 전도성 금속 및 합금은 은, 구리, 어닐링된 구리(annealed copper), 금, 알루미늄, 칼슘, 텅스텐, 아연, 코발트, 니켈, 루테늄, 리튬, 철, 백금, 주석, 갈륨, 니오븀, 탄소강, 납, 갈린스탄, 티타늄, 방향성 전기강판(grain oriented electrical steel), 망가닌(manganin), 콘스탄탄(constantan), 스테인리스강, 수은, 망간 및 니크롬(nichrome)으로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제12항에 있어서, 상기 전도성 2D 재료는 이황화몰리브덴(MoS2), 포스포린(phosphorene), 비스무신(bismuthene), 맥신(Mxene) 또는 이황화텅스텐(WS2)인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제12항에 있어서, 상기 전도성 탄소재료는 그래핀, 그래핀옥사이드, 그래파이트(graphite), 탄소검정(carbon black) 및 탄소나노튜브로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제12항에 있어서, 상기 전도성 다공성 구조체는 유기 골격체(Covalent Organic Framework, COF) 또는 금속-유기 골격체(Metal-Organic Framework, MOF) 또는 탄소계열 다공성 물질인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제12항에 있어서, 상기 전도성 재료는 입자 형태 또는 벌크 전선 형태인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제18항에 있어서, 상기 벌크 전선은 절연체로 코팅된 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제1항에 있어서, 상기 지지체는 고분자 또는 소결을 통한 무기물인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제20항에 있어서, 상기 지지체는 셀룰로오스, 셀룰로오스 아세테이트, 미세 다공성 고분자, 폴리에틸렌, 폴리프로필렌, 폴리에틸렌글리콜, 폴리에틸렌 테레프탈레이트, 폴리비닐리덴 플로라이드, 폴리아크릴로니트릴, 폴리메틸메타크릴레이트, 폴리이미드, 폴리아미드이미드, 폴리에테르이미드, 산화 니켈, 산화 구리, 알루미나, 산화 아연, 탄화규소로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제1항에 있어서, 상기 지지체는 중공 구조 또는 모노리틱 구조를 갖는 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제1항에 있어서, 상기 흡착제는 상기 지지체 내에 1 wt% 내지 80 wt% 포함되는 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제1항에 있어서, 서셉터(susceptor)가 추가로 포함되어 있는 것을 특징으로 하는 전기화된 파이버 흡착제.
- 제24항에 있어서, 상기 서셉터는 탄소 섬유, 산화크로뮴, 침철석(Goethite), 레피도크로사이트(Lapidocrocite, 적철석(Hematite), 마그헤마이트(Maghemite), 자철석(Magnetite), 타이타늄철석(Ilmenite), 철(Fe) 및 코발트(Co)로 구성된 군에서 선택되는 것을 특징으로 하는 전기화된 파이버 흡착제.
- 흡착제와 지지체를 포함하는 도프 용액을 방사한 다음, 전도성 재료를 포함하는 용액에 침지하는 단계;를 포함하는 제2항의 전기화된 파이버 흡착제의 제조방법.
- 제26항에 있어서, 상기 파이버 흡착제의 제조방법은 상기 지지체를 용액에 침지하기 전에, 상기 지지체의 쉘 표면을 처리하는 단계;를 추가로 포함하는 전기화된 파이버 흡착제의 제조방법.
- 흡착제 및 지지체를 포함하는 도프 용액을 방사하되, 스피너렛의 보어 또는 코어 측에 전도성 재료를 첨가한 후 방사하는 단계를 포함하는 제3항 또는 제4항의 전기화된 파이버 흡착제의 제조방법.
- 제1항의 전기화된 파이버 흡착제를 복수 개 포함하는 이산화탄소의 전기 및 전자기 스윙 흡착을 위한 전기화된 파이버 흡착제 모듈.
- (a) 이산화탄소 함유 기체를 제1항의 전기화된 파이버 흡착제와 접촉시켜 상기 이산화탄소를 흡착하는 단계; 및(b) 상기 파이버 흡착제에 전압을 인가하여 상기 흡착된 이산화탄소를 탈착하는 단계;를 포함하는 이산화탄소의 전기 및 전자기 스윙 흡착 방법.
- 제30항에 있어서,저항 가열 방식 또는 유도 가열 방식에 의하여 전압을 인가하여 이산화탄소를 흡착한 흡착제를 재생하는 것을 특징으로 하는 이산화탄소의 전기 및 전자기 스윙 흡착 방법.
- 제30항에 있어서,상기 기체 내의 이산화탄소 농도는 1000 ppm 이하인 것을 특징으로 하는 이산화탄소의 전기 및 전자기 스윙 흡착 방법.
- 제30항에 있어서, 상기 (b) 단계 이후에, (c) 상기 (a) 및 (b) 단계를 반복 수행하는 단계를 추가로 포함하는 이산화탄소의 전기 및 전자기 스윙 흡착 방법.
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| EP22883874.4A EP4420772A4 (en) | 2021-10-22 | 2022-10-13 | METHOD FOR MANUFACTURING ELECTRIFIED FIBER SORBANT, AND METHOD FOR ELECTRICALLY AND ELECTROMAGNETIC MODULATED ADSORPTION |
| CN202280070939.8A CN118450940A (zh) | 2021-10-22 | 2022-10-13 | 用于制造电化纤维吸附剂的方法以及电和变电磁吸附方法 |
| AU2022368476A AU2022368476B2 (en) | 2021-10-22 | 2022-10-13 | Method for manufacturing electrified fiber sorbent, and electrical and electromagnetic swing adsorption process |
| JP2024524376A JP7755741B2 (ja) | 2021-10-22 | 2022-10-13 | 電気化されたファイバー吸着剤の製造方法並びに電気及び電磁スイング吸着プロセス |
| US18/703,341 US20240416278A1 (en) | 2021-10-22 | 2022-10-13 | Method for manufacturing electrified fiber sorbent, and electrical and electromagnetic swing adsorption process |
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| CN117920124A (zh) * | 2023-10-30 | 2024-04-26 | 上海交通大学 | 高选择性捕获气态单质汞的高分散纳米金材料及其制备和应用 |
| CN118162111A (zh) * | 2024-03-28 | 2024-06-11 | 华北电力大学(保定) | 一种去除气态汞的PPy/MXene复合膜及其制备方法和应用 |
| CN118904290A (zh) * | 2024-08-28 | 2024-11-08 | 厦门斯研新材料技术有限公司 | 一种氮掺杂石墨烯-活性炭的活性吸附剂及其制备方法、除臭装置和在空气净化领域的应用 |
| CN119936130A (zh) * | 2023-11-02 | 2025-05-06 | 中国石油天然气股份有限公司 | 一种用于非金属管的气体感应器及气体监测方法 |
| WO2025242559A1 (de) * | 2024-05-24 | 2025-11-27 | Volkswagen Ag | Sorptionselement und prozessraum für eine anlage zur abtrennung von kohlenstoffdioxid sowie anlage mit einem solchen |
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| CN116328743A (zh) * | 2023-05-11 | 2023-06-27 | 北京工业大学 | 一种在斜发沸石表面原位生长微晶的复合材料制备方法 |
| CN116328743B (zh) * | 2023-05-11 | 2024-05-07 | 北京工业大学 | 一种在斜发沸石表面原位生长微晶的复合材料制备方法 |
| CN117920124A (zh) * | 2023-10-30 | 2024-04-26 | 上海交通大学 | 高选择性捕获气态单质汞的高分散纳米金材料及其制备和应用 |
| CN119936130A (zh) * | 2023-11-02 | 2025-05-06 | 中国石油天然气股份有限公司 | 一种用于非金属管的气体感应器及气体监测方法 |
| CN117230539A (zh) * | 2023-11-14 | 2023-12-15 | 江苏中鲈科技发展股份有限公司 | 一种电阻式压力传感器用力学敏感材料及其制备方法和应用 |
| CN117230539B (zh) * | 2023-11-14 | 2024-03-19 | 江苏中鲈科技发展股份有限公司 | 一种电阻式压力传感器用力学敏感材料及其制备方法和应用 |
| CN118162111A (zh) * | 2024-03-28 | 2024-06-11 | 华北电力大学(保定) | 一种去除气态汞的PPy/MXene复合膜及其制备方法和应用 |
| WO2025242559A1 (de) * | 2024-05-24 | 2025-11-27 | Volkswagen Ag | Sorptionselement und prozessraum für eine anlage zur abtrennung von kohlenstoffdioxid sowie anlage mit einem solchen |
| CN118904290A (zh) * | 2024-08-28 | 2024-11-08 | 厦门斯研新材料技术有限公司 | 一种氮掺杂石墨烯-活性炭的活性吸附剂及其制备方法、除臭装置和在空气净化领域的应用 |
| WO2026070095A1 (ja) * | 2024-09-25 | 2026-04-02 | ノリタケ株式会社 | ガス吸収ユニット、ガス分離回収装置及びガス回収方法 |
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| Publication number | Publication date |
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| EP4420772A1 (en) | 2024-08-28 |
| US20240416278A1 (en) | 2024-12-19 |
| KR20230057956A (ko) | 2023-05-02 |
| AU2022368476B2 (en) | 2026-02-12 |
| EP4420772A4 (en) | 2025-11-12 |
| JP7755741B2 (ja) | 2025-10-16 |
| AU2022368476A1 (en) | 2024-05-30 |
| CN118450940A (zh) | 2024-08-06 |
| KR102546112B1 (ko) | 2023-06-22 |
| JP2024538227A (ja) | 2024-10-18 |
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