Device for separating carbon dioxide from the ambient air

Abstract

The present invention relates to a device for separating carbon dioxide from the ambient air, wherein the device comprises a first flexible carrier belt with a sorbent, a first adsorption chamber for binding carbon dioxide from the ambient air in the sorbent, a first desorption chamber for releasing the carbon dioxide bound in the sorbent and two drive reels onto which the carrier belt can be wound and unwound with different conveying directions, wherein the path and the reels are arranged such that they move the belt through the adsorption chamber and the desorption chamber.

Description

[0001] The invention relates to a device and a method for separating carbon dioxide from the ambient air.

[0002] The emission of carbon dioxide into the atmosphere is currently considered a major driver of climate change. Carbon capture and storage (CCS) technologies are efficient and effective methods for reducing carbon dioxide emissions into the atmosphere.

[0003] Known methods for capturing carbon dioxide include absorption, adsorption, membrane-based systems, electrochemical separation and cryogenic separation.

[0004] Solid and liquid sorbents or sorption media are known for adsorptive and absorptive processes for capturing carbon dioxide. In common processes, the sorption of carbon dioxide onto or into a sorbent takes place at low temperatures.

[0005] Thermal processes are known for the desorption of carbon dioxide, especially from a solid sorbent, i.e. the desorption and release of gaseous carbon dioxide from a sorbent under the influence of temperatures in the range between 60 and 100 °C.

[0006] In current processes, sorption and desorption often take place in the same apparatus, which means that a high energy expenditure is required to adjust the parameters for sorption and subsequent desorption in the apparatus.

[0007] The non-patent publication "Direct Capture of CO2 from Ambient Air" (Sanz-Pérez et al., Chemical Reviews, 2016, 116(19), DOI: 10.1021 / acs.chemrev.6b00173) describes and evaluates the most common liquid and solid sorbents for the absorption of carbon dioxide from the air and their use in direct air capture (DAC) processes. In addition to aqueous sorbents such as alkaline and amine-containing solutions, solid chemisorbents are described, which can adsorb carbon dioxide from the ambient air.

[0008] Different possibilities are known for the arrangement of the solid sorbents on a carrier material, which is moved by or located in a carbon dioxide-containing air stream.

[0009] US 2011 / 0189075 A1 describes the arrangement of solid sorbents for absorbing CO2 in the form of a “bottle brush”, i.e. several layers of a solid sorbent are arranged in a fan-like manner on a rod that is moved by a CO2-containing air stream.

[0010] WO 2019 / 165151 describes the use of a collection body coated with a sorption material, which is guided through the CO2-containing ambient air. The collection body is then guided into a so-called harvesting chamber, where heat is used to desorb the carbon dioxide from the belt.

[0011] WO 2020 / 148460 describes the use of a solid chemisorbent in a device in which a belt provided with a sorbent as the chemisorbent is moved between an adsorption zone and a desorption zone. The belt is applied, for example, to a roller, and the belt is moved between the adsorption and desorption zones by a rotational movement of the roller.

[0012] On the one hand, the conventional methods have the disadvantage that the application of the sorbent to a carrier results in overlapping areas, or dead zones. In these areas, the capacity for carbon dioxide loading is low due to the connection of the sorbent materials to a carrier or the sorbent materials to each other, for example, in the form of an endless belt. Furthermore, the arrangements described above have the disadvantage that, in an endless belt or in the "bottle brush" arrangement, bonding points arise that are susceptible to material wear.

[0013] The object of the present invention is to provide a device which at least partially overcomes the above-mentioned disadvantages.

[0014] This object is achieved by the device according to the invention as claimed in claim 1.

[0015] Further advantageous embodiments of the invention emerge from the subclaims and the following description of preferred embodiments of the present invention.

[0016] A device according to the invention for separating carbon dioxide from the ambient air comprises: -a first flexible carrier tape with a sorbent; -a first adsorption chamber for binding carbon dioxide from the ambient air in or on the sorbent; -a first desorption chamber for releasing the carbon dioxide bound in or on the sorbent; and -two drive reels onto which the carrier tape can be wound and unwound with different conveying directions, the path and reels being arranged to move the tape through the adsorption chamber and the desorption chamber.

[0017] The ambient air can be, for example, atmosphere or exhaust air or even room air.

[0018] The flexible carrier tape can be made of a deformable material and its structure is designed to be flexible and moveable in at least one spatial direction. The carrier tape can be made of a porous or non-porous material, which will be explained in more detail below.

[0019] The sorbent can be integrated into the carrier tape or applied to the carrier tape. The sorbent can be an amine-containing chemisorbent, but other chemisorbents are also possible. The sorbent is capable of adsorbing gaseous carbon dioxide from the air and trapping it in the adsorbent. Depending on the manufacturing process of the carrier tape with the sorbent, the carbon dioxide can be absorbed or adsorbed in or on the sorbent.

[0020] In the device according to the invention, the carbon dioxide is bound in a first adsorption chamber. A first adsorption chamber means that the device is not limited to one adsorption chamber; additional adsorption chambers can be arranged in the device according to the invention. Ambient air or carbon dioxide-containing air is introduced through the adsorption chamber, and low-carbon dioxide air is discharged from it. This can be done, for example, by a suction fan arranged at an air outlet and allowing CO2-containing air to flow into and out of the adsorption chamber via an air inlet on the adsorption chamber. The air supply and air discharge can also be carried out by a respective gas conveying device, for example a fan, a propeller, a compressor, or the like, at the air inlet and air outlet.

[0021] If the sorbent is an amine-containing sorbent (R-NH2), the binding of CO2 to the sorbent takes place, for example, according to the following reaction equation: 2 R-NH2 + CO2 ⇌ R-NH3 + + R-NH-COO - (Equation 1)

[0022] According to equation 1, the binding of carbon dioxide can occur with the formation of a carbamate on an amine.

[0023] The carbon dioxide bound in this way is removed from the sorbent and thus also from the carrier tape in a desorption chamber in the device according to the invention. The desorption chamber is a chamber in which parameters for the energy-saving and effective desorption of CO2 from the sorbent can be adjusted. One possibility for removing the carbon dioxide from the sorbent is to apply heat to the sorbent. This will be explained in more detail later. In the desorption chamber, CO2 is released in gaseous form, which can flow out of the desorption chamber through a gas outlet and be collected.

[0024] According to the invention, the carrier tape with the sorbent is moved by means of two drive coils. The drive coils can be designed as rollers or rolls to which the carrier tape is fixed, for example by the carrier tape being axially inserted into a roller or roll as a drive coil. Furthermore, the carrier tape can be connected to the drive coils, for example by gluing. Furthermore, the drive coils can be designed such that they can rotate left and right, i.e., even in opposite directions. Furthermore, the drive coils can be designed such that they can change their direction of rotation in the same way, for example by mechanically coupling the drive coils or by reversing the electrical voltage.

[0025] According to the invention, this results in the arrangement that the drive coils can wind and unwind the carrier tape in different conveying directions, with the path and the coils being configured to move the tape through the adsorption chamber and the desorption chamber. The arrangement of the sorption material on the carrier tape, which can be wound in this way, makes it possible to move the carrier tape through the system based on recorded process parameters, for example, adjusting the conveying speed.

[0026] Furthermore, the arrangement according to the invention results in the carrier tape with the sorbent being able to be located in an adsorption chamber and a desorption chamber at the same time.

[0027] In a first embodiment, the sorbent is bound to the carrier tape. This means that the carrier tape itself serves as the sorbent. This can be achieved, for example, by functionalized silanes or functionalized cellulose, to whose terminal oxygens, for example, amine groups are bonded. This results in a solid carrier material that contains the sorbent itself chemically bound and from which the carrier tape can be formed.

[0028] In a further embodiment, the carrier tape is provided with a carrier material containing the sorbent and applied to the carrier tape as a functional layer. The carrier tape itself can be in the form of a film coated with a sorbent. The film can be impermeable to air. The carrier tape can be designed as a composite between a polymeric film, for example, made of PET, and an amine-containing compound.

[0029] In another embodiment, the carrier tape is multi-layered, designed as a functional fabric, a filter material, a nonwoven, or a mesh. A multi-layered design of the carrier tape can be achieved by folding the tape, resulting in the carrier tape being formed from multiple layers of the sorbent. The layers can be separated from each other by spacers.

[0030] In a further embodiment, the carrier tape is provided with a spacer and a tape layer connected to the carrier material containing the sorbent. The connection can be created, for example, by sewing or welding the carrier tape, the spacer, and the carrier material together.

[0031] According to this embodiment, a functional fabric can be modified silane or modified cellulose, as already explained above. Furthermore, the carrier tape can be made of a porous, air-permeable material in the form of a nonwoven or mesh. Furthermore, filter materials that are also used in membrane filtration, e.g., polyamide, cellulose nitrate, and the like, can be used.

[0032] In a further embodiment, the device according to the invention comprises a second desorption chamber, wherein the desorption chambers are arranged alternately or in series with the first adsorption chamber. An alternating or alternating arrangement can be an arrangement in which each sorption chamber is followed by a desorption chamber. The arrangement can be designed such that a sorption chamber is adjacent to a desorption chamber on both sides. Furthermore, the second desorption chamber can follow a first desorption chamber in series, with two desorption chambers being arranged in series downstream of an adsorption chamber.

[0033] In a further embodiment, the second desorption chamber has desorption conditions that are different from the desorption conditions in the first desorption chamber. The second desorption chamber can have a different desorption temperature than the first desorption chamber. However, other desorption parameters can also be modified; for example, a negative pressure can be created in a desorption chamber, or different desorption processes can be used, e.g. one by introducing a hot gas stream and the other by providing an optionally heated desorption solution in the respective desorption chamber. This has the advantage that the carrier belt with the sorbent can be completely freed of adsorbed gas, e.g. through the different desorption conditions. The carrier belt with the sorbent can thus be completely regenerated for renewed CO2 absorption.

[0034] In another embodiment, the carrier tape is wound in a desorption chamber. The drive coils can each be located in a desorption chamber adjacent to an adsorption chamber. For example, the carrier tape with the sorbent remains longer in a desorption chamber than in the adsorption chamber, allowing complete desorption of the bound carbon dioxide.

[0035] In a further embodiment, a deflection roller is mounted in an adsorption chamber or desorption chamber, which changes the running direction of the carrier tape. The device can be designed such that it consists of an adsorption and a desorption chamber, with the deflection roller being mounted in one of the chambers and the two drive coils according to the invention, which wind and unwind the carrier tape accordingly, being mounted in the other chamber. Furthermore, in a device arranged in this way, several deflection rollers can be mounted in one chamber, whereby the carrier tape with the sorbent is guided in a meandering pattern through the corresponding chamber. This can, for example, ensure a longer residence time of the carrier tape with the sorbent in an adsorption or desorption chamber, which can have a positive effect on the efficiency of CO2 absorption and subsequent controlled release.

[0036] In a further embodiment, the device comprises a second carrier belt and two further drive coils, between which the second carrier belt is wound and unwound, wherein the second drive coil is configured to move the second carrier belt in the opposite direction to the first carrier belt. The two carrier belts can be arranged one above the other, but any arrangement of the belts can be selected. Preferably, the second carrier belt with the sorbent runs in the opposite direction to the first carrier belt, which can result in quasi-continuous operation of the system since, for example, the first carrier belt is moved in one direction of the adsorption chamber and the second carrier belt is moved in the direction of the desorption chamber.

[0037] In a further embodiment, heating means for heating the sorbent are arranged in a desorption chamber. The heating means can be a hot fluid bath, a hot gas stream such as steam, an inert gas, or a gaseous organic compound (e.g., methane, ethane, propane, dimethyl ether, diethyl ether), or a Peltier element that heats the desorption chamber to the desorption temperature, for example. Furthermore, the heating means can be configured as infrared emitters or microwave emitters that specifically apply high-energy radiation to the sorbent, thus heating it only at specific points. This eliminates the need to heat the entire desorption chamber, which can have a positive impact on the system's energy balance.

[0038] In a further embodiment, the device has a tunnel through which the carrier belt is moved and which is arranged between two desorption chambers and / or between an adsorption and a desorption chamber, wherein measured variables for adsorption and desorption are recorded in the tunnel. The tunnel can serve as a spacer between two different chambers, for example to thermally insulate them from one another. In an arrangement with more than two chambers, several tunnels can also be installed in the device according to the invention. Parameters can be recorded in the tunnels, for example a degree of carbon dioxide loading of the sorbent, a temperature of the carrier belt, and the like.

[0039] In a further embodiment, the device has a cooling chamber for cooling the sorbent after the release of the carbon dioxide bound in or on the sorbent, wherein the cooling chamber is arranged in series with a desorption chamber. The cooling chamber essentially serves to cool the heated carrier tape with the sorbent, which has been heated by passing through a desorption chamber with either high temperatures or by electromagnetic radiation, as described above, to at least room temperature. On the one hand, this can serve to protect the carrier tape material and the sorbent by applying a high desorption temperature to the sorbent or carrier tape only for as long as necessary, thereby reducing the temporal effect of thermal stress on the carrier tape with the sorbent.The cooling chamber can contain a cooling liquid through which the carrier tape is passed, but it can also be cooled by a cold gas stream, such as an air stream. If the cooling unit in the cooling chamber is a liquid, it is recommended to run the carrier tape with the sorbent through a liquid wiper to reduce the moisture content of the sorbent. According to the invention, the cooling chamber follows a desorption chamber.

[0040] In a further embodiment, the device further comprises an air supply for supplying a carbon dioxide-containing air stream into an adsorption chamber, an air exhaust for removing carbon dioxide-poor air from the adsorption chamber, and a storage unit for receiving the concentrated carbon dioxide from a desorption chamber. The air supply can be provided by a suction fan, as described above. The storage unit can be a gas cylinder or the like. Before the desorbed CO2 is collected in a storage unit, it is dehumidified, concentrated, and compressed in the storage unit.

[0041] Furthermore, the present invention provides a method for separating carbon dioxide from the air using the device according to the invention. The method comprises the steps of supplying a carbon dioxide-containing air stream into an adsorption chamber, winding and unwinding the carrier tape with the sorbent by means of the drive coils. During winding and unwinding, the method steps of moving the carrier tape through the adsorption chamber through the carbon dioxide-containing air stream, whereby carbon dioxide is adsorbed in or on the sorbent; and moving the carrier tape through a desorption chamber, whereby the carbon dioxide bound in the sorbent is desorbed. Furthermore, the method of the present invention comprises capturing and storing the released carbon dioxide.

[0042] In a further embodiment, the method further comprises changing the running direction of the carrier tape in an adsorption chamber or desorption chamber.

[0043] Embodiments of the invention will now be described by way of example and with reference to the accompanying drawings, in which: Fig. 1 schematically shows a first embodiment of the device according to the invention; Fig. 2a, Fig. Figure 2b schematically illustrates a modification of the first embodiment of the device according to the invention; Fig. 3a, Fig. 3b shows a second embodiment of the device according to the invention, as well as a modification of the second embodiment; Fig. 4a, Fig. 4b shows two further embodiments of the device according to the invention; Fig. 5a, Fig. 5b shows a schematic first and second embodiment of the carrier tape; and Fig. 6 shows a further embodiment of the carrier tape.

[0044] An embodiment of a device (100) according to the invention is shown in Fig. 1. The device (100) comprises an adsorption chamber (1), a desorption chamber (2), and a carrier tape (3) with sorbent, which is wound up and unwound by means of a first (11) and second (12) drive coil. In a first embodiment, the drive coils (11, 12) are located outside the adsorption and desorption chambers (1, 2). The carrier tape (3) with the sorbent is guided through the adsorption chamber (1) and the desorption chamber (2) by means of the drive coils (11, 12). The adsorption chamber (1) is further provided with an air inlet (1a), e.g. at the lower end of the adsorption chamber, and an air outlet (1b), e.g. at an upper end of the adsorption chamber. Furthermore, a suction fan (1c) is attached to the air outlet (1b), which allows the CO2-containing air to flow in and out of the adsorption chamber (1), whereby the carrier belt (3) with the sorbent is contacted with the CO2-containing gas stream.The desorption chamber (2) is provided with a gas outlet (2a) connected to a collection and storage unit (2b) for the extracted CO2. The storage unit (2b) can be, for example, a gas cylinder or an elastically expandable container. Compression and dehumidification units (not shown) can be attached to the gas outlet (2a) in order to concentrate the CO2 extracted from the desorption chamber (2). Heating elements (2c) are also mounted in the desorption chamber (2). The heating elements (2c) can, as explained above, comprise emitters for electromagnetic radiation (for example, infrared or microwave radiation), a hot fluid bath, or even a hot gas stream of inert gas, for example water vapor.

[0045] In the Fig. 2a shows a preferred embodiment of the device (100). The device in the Fig. 2a comprises, in addition to an adsorption chamber (1) as the "central chamber," a first and second desorption chamber (21, 22) arranged at a respective side end of the adsorption chamber (1). The adsorption chamber (1) is provided with an air inlet (1a), an air outlet (1b), and a suction fan (1c). The two desorption chambers (21, 22) are each provided with a gas outlet (2a), a storage unit (2b), and heating elements (2c). A first drive coil (11) is located in the first desorption chamber (21), and the second drive coil (12) is located in the second desorption chamber (22). In this embodiment, the carrier tape (3) with the sorbent is wound up either in the first (21) or second (22) desorption chamber, depending on the running direction of the drive coils (11, 12), and passes through the adsorption chamber (1) in the middle of the arrangement.In this way, a longer residence time of the carrier belt (3) with the sorbent in the desorption chambers (2, 21, 22) can be achieved, whereby the CO2 can be completely desorbed from the sorbent.

[0046] In a further embodiment of the Fig. 2b, the device (100) according to the invention is provided with tunnels (4) arranged between the respective chambers (1, 2, 21, 22) for adsorption or desorption. The tunnels (4) serve, on the one hand, to space the chambers apart; above all, measured variables for adsorption and desorption are recorded in the tunnels (4). This can be done by sensors (4c) mounted inside the tunnels (4). In the embodiment of the Fig. 2b, the drive coils (11, 12) which move the carrier tape (3) with the sorbent through the adsorption chamber (1), the tunnel(s) (4) and the desorption chambers (2, 21, 22) are mounted outside the desorption chambers (2, 21, 22); they can preferably, as for the Fig. 2a, may also be installed inside the desorption chambers (2, 21, 22).

[0047] The Fig. Figure 3a shows a modification of the preferred embodiment of the device (100) of Fig. 2a. In addition to the structure of the Fig. 2a, the device (100) of this exemplary embodiment comprises, in addition to a first carrier belt (3a) with sorbent, a further carrier belt (3b), which is moved through the device (100) by winding and unwinding by a third (13) and a fourth (14) drive coil. The two carrier belts (3a, 3b) are moved in opposite directions through the device (100), thereby ensuring quasi-continuous operation of the device.

[0048] In the Fig. Figure 3b shows a further embodiment of the device (100) according to the invention. In this embodiment, several – here three – desorption chambers (21, 22, 23) are arranged in series with an adsorption chamber (1). As in the embodiments described above, the desorption chambers (21, 22, 23) are each provided with a gas outlet (2a), a storage unit (2b), and heating elements (2c), and the adsorption chamber is provided with an air inlet (1a), an air outlet (1b), and a suction fan (1c). Furthermore, in this embodiment, a first (3a) and second (3b) carrier belt are arranged, which are wound up and unwound between the desorption chamber (23) through the further desorption chambers (21, 22) and the adsorption chamber (1) by means of four drive coils (11, 12, 13, 14).The first drive coil (11) for the first carrier tape (3a) and the first drive coil (13) for the second carrier tape (3b) are located in the adsorption chamber (1) and the second drive coil (12, 14) for the second carrier tape (3b) are located in the last, or here third, desorption chamber (23).

[0049] According to the invention, a desorption chamber (22, 23) can also be a cooling chamber. This means that cooling elements are installed in a desorption chamber, for example, in the second desorption chamber (22), which cool the sorbent after desorption using heat, for example, from the first desorption chamber (21), and thus regenerate it for further adsorption.

[0050] In another embodiment of the Fig. 4a, the device (100) according to the invention has an adsorption chamber (1) and a desorption chamber (2). The drive coils (11, 12) that wind and unwind the carrier tape (3) with the sorbent are arranged in the desorption chamber (2). A deflection roller (15) is mounted in the adsorption chamber, over which the carrier tape (3) with the sorbent is guided, whereby the running direction of the carrier tape (3) is reversed or changed. An additional desorption chamber as in the Fig. 2a, Fig. 2b, Fig. 3a can be waived.

[0051] In a further embodiment of the Fig. 4b, the adsorption chamber (1) has additional deflection rollers (15) - here five - which guide the carrier belt (3) with the sorbent in a meandering manner through the adsorption chamber (1). The remaining structure is identical to that in the Fig. 4a. The multiple deflection rollers (15) in this embodiment ensure that the carrier belt (3) with the sorbent remains in the adsorption chamber (1) for a long time, which allows for sufficient loading of the sorbent with CO2, for example, at low CO2 concentrations in the gas stream. However, the deflection roller(s) (15) can also be mounted in a desorption chamber (2, 21, 22, 23).

[0052] The desorption chambers (21, 22, 23) of the Fig. 2a, Fig. 2b, Fig. 3a, Fig. 3b can have either the same or different desorption parameters.

[0053] The individual elements of the embodiments of the device (100) according to the invention described here can also be combined individually. Thus, the device (100) in the embodiments of the Fig. 1, Fig. 2a, Fig. 2b, Fig. 3a and Fig. 3b e.g. with the tunnels (4) which are for the Fig. 2b, in which measured variables for adsorption and desorption are recorded by means of the sensors (4c). For example, desorption parameters in one or more desorption chambers (2, 21, 2223) can be adjusted individually and parameter-dependently.

[0054] In the Fig. Figure 5a shows a first embodiment of the carrier tape (3) with the sorbent (5). The carrier tape in this embodiment is made of a material that itself contains the sorbent (5). An embodiment can also be chosen in which the carrier tape (3) itself is the sorbent (5), for example, by using functionalized silanes or celluloses with terminal amine groups as the carrier tape material.

[0055] In the Fig. Figure 5a shows a further embodiment of the carrier tape (3). The sorbent (5) is applied to an air-impermeable film (3) as a functional layer (6) or as a carrier material. In this embodiment, the air or gas flow cannot penetrate the carrier tape (3), so the sorbent (5) is transported by a laminar air or gas flow, indicated by the arrow direction in the Fig. 5b, contacted with the sorbent (5).

[0056] In the Fig. Figure 6 shows an embodiment of the carrier tape (3) in which the carrier tape is porous on both sides and thus permeable to air or gas. The material can be designed as a fleece, net, gauze or filter material and the like. The sorbent (5) in this embodiment is located in the pores, cavities or meshes of the carrier tape (3). The sorbent (5) can either be a functional layer, as in the Fig. 4b, or the fabric itself can be applied as described in the Fig. 4a, be made of the sorbent.

[0057] The carrier tape (3) in the Fig. 6 can also be designed as an air-impermeable material. The carrier tape is then Fig. 5a is contacted with the air by a laminar gas flow on at least one side of the carrier tape.

[0058] Furthermore, the carrier belt (3) can be designed such that it has sorption points to which a CO2-containing air stream can be directed.

[0059] Also for the carrier bands (3, 3a, 3b) there is the possibility of combining the individual elements of the different embodiments of the Fig. 4a, Fig. 4b and Fig.5. In addition, in the embodiments which have a further carrier tape (3, 3a, 3b) with sorbent (5), different embodiments for the carrier tapes can be used. List of reference symbols 1 adsorption chamber 1a Air intake 1b Air outlet 1c suction fan 2, 21, 22, 23 Desorption chamber 2a Gas outlet 2b Storage unit 2c Heating element 3, 3a, 3b Carrier tape with sorbent 4 tunnels 4c Sensor 5 Sorbents 6 Carrier material 11, 12, 13, 14 Drive coil 15 pulley 100 device QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 2011 / 0189075 A1

[0009] WO 2019 / 165151

[0010] WO 2020 / 148460

[0011] Cited non-patent literature

[0000] Direct Capture of CO2 from Ambient Air” (Sanz-Pérez et. al, Chemical Reviews, 2016, 116(19), DOI: 10.1021 / acs.chemrev.6b00173

[0007]

Claims

[1] Device (100) for separating carbon dioxide from the ambient air, comprising: a first flexible carrier tape (3) with a sorbent (5); a first adsorption chamber (1) for binding carbon dioxide from the ambient air in or on the sorbent (5); a first desorption chamber (2) for releasing the carbon dioxide bound in or on the sorbent (5); and two drive reels (11, 12) onto which the carrier tape (3) can be wound and unwound with different conveying directions, the path and the reels being arranged such that they move the tape through the adsorption chamber (1) and the desorption chamber (2). [2] Device (100) according to claim 1, wherein the sorbent (5) is bound in the carrier tape (3). [3] Device (100) according to claim 1, wherein the carrier tape (3) is provided with a carrier material (6) which comprises the sorbent (5) and is applied to the carrier tape (3) as a functional layer. [4] Device (100) according to one of the preceding claims, wherein the carrier tape (3) is designed in multiple layers, as a functional fabric, as a filter material, as a fleece or as a net. [5] Device (100) according to one of the preceding claims, further comprising a second desorption chamber (22), wherein the desorption chambers (2, 21, 22) are arranged alternately or in series with the first adsorption chamber (1). [6] The device (100) according to claim 5, wherein the second desorption chamber (2; 22) has desorption conditions that are different from the desorption conditions in the first desorption chamber (2, 21). [7] Device (100) according to one of the preceding claims, wherein the carrier tape (3) is wound up in a desorption chamber (2, 21, 22; 23). [8] Device (100) according to one of the preceding claims, wherein a deflection roller (15) is mounted in an adsorption chamber (1) or desorption chamber (2; 21, 22; 23), which changes the running direction of the carrier belt (3). [9] Device (100) according to one of the preceding claims, further comprising a second carrier tape (3b), and two further drive coils (13, 14) between which the second carrier tape (3b) is wound up and unwound, wherein the two further drive coils (13, 14) are arranged to move the second carrier tape (3b) in the opposite direction to the first carrier tape (3, 3a). [10] Device (100) according to one of the preceding claims, wherein heating means (2c) for heating the sorbent (5) are arranged in a desorption chamber (2, 21, 22, 23). [11] Device (100) according to one of the preceding claims, further comprising a tunnel (4) through which the carrier belt (3; 3a, 3b) is moved and which is arranged between two desorption chambers (2; 21, 22; 23) and / or between an adsorption chamber (1) and a desorption chamber (2; 21, 22; 23), wherein measured variables for adsorption and desorption are recorded in the tunnel (4). [12] Device (100) according to one of the preceding claims, further comprising a cooling chamber for cooling the sorbent (5) after the release of the carbon dioxide bound in or on the sorbent (5), wherein the cooling chamber is arranged in series with a desorption chamber (2, 21, 22, 23). [13] Device (100) according to one of the preceding claims, further comprising: an air supply (1a) for supplying a carbon dioxide-containing air stream into an adsorption chamber (1); an air outlet (1b) for removing carbon dioxide-poor air from the adsorption chamber (1); a gas discharge (2a) and storage unit (2b) for receiving the concentrated carbon dioxide from a desorption chamber (2). [14] A method for separating carbon dioxide from the air by means of a device (100) according to any one of the preceding claims, comprising the steps: - supplying an air stream containing carbon dioxide into an adsorption chamber (1); - Winding and unwinding the carrier tape (3) with the sorbent (5) by means of the drive coils (11, 12, 13, 14), comprising the steps: Moving the carrier tape (3) through the adsorption chamber (1) through the carbon dioxide-containing air stream, whereby carbon dioxide is adsorbed in or onto the sorbent (5); and Moving the carrier tape (3) through a desorption chamber (2; 21, 22; 23), whereby the carbon dioxide bound in or on the sorbent (5) is desorbed; and capturing and storing the released carbon dioxide. [15] Method according to claim 14, wherein the running direction of the carrier tape (3) is changed in an adsorption chamber (1) or desorption chamber (2).

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