CO2 separation device for separating CO2 from a conveyed air stream

Abstract

A CO2 separation device is proposed for separating CO2 from a conveyed air stream (104) by means of a CO2 release method. The CO2 separation device has a separation chamber (15) for receiving a CO2 separating agent (107) and a water vapor generating unit (12) for providing water vapor in the separation chamber (15) for the CO2 release method. The water vapor generating unit (12) for providing water vapor has at least one heating surface (16) arranged in the separation chamber (15) and at least one cooling surface (20) arranged in the separation chamber (15). The heating surface is used to vaporize the water arranged thereon, and the cooling surface is used to condense the water vaporized in the separation chamber (15) for re-vaporization.

Description

Technical Field

[0001] This invention relates to a CO2 separation apparatus for separating CO2 (carbon dioxide) from a transported air stream by means of a CO2 release method, the CO2 separation apparatus having a separation chamber for receiving a CO2 separating agent and a water vapor generating unit for providing water vapor in the separation chamber for the CO2 release method. Furthermore, this invention relates to a method for separating CO2 from a transported air stream by means of a CO2 separation apparatus, the CO2 separation apparatus having a separation chamber for receiving a CO2 separating agent and a water vapor generating unit for providing water vapor in the separation chamber for the CO2 release method. Background Technology

[0002] To limit the warming of the Earth's atmosphere, a system called DAC (Direct Air Capture) is used to separate or remove CO2 (carbon dioxide) from the air.

[0003] Because the binding of CO2, and potentially water, to the adsorbent depends on temperature, pressure, concentration, air humidity, and so on, all adsorption and desorption systems are periodically set with different conditions in order to separate CO2 through the resulting hysteresis. To set the desorption conditions, the adsorbent must be temporarily enclosed relative to its surroundings and thus placed in a chamber.

[0004] Here, the chamber typically undergoes the following steps periodically: (1) Adsorbs ambient air when the chamber is open; (2) The chamber is sealed and the adsorbent material is heated, and the chamber structure of the metal is also forcibly heated; (3) CO2 and the water bound together are desorbed by heat transfer under reduced pressure (e.g., 200 to 400 mbar) and CO2 and water vapor are pumped out by means of a vacuum pump; (4) Cool the adsorbent material and the chamber and optionally dry the adsorbent material until below the critical temperature, below which contact with ambient air no longer leads to an increase in degradation of the adsorbent material due to oxygen in the air. (5) Open the chamber relative to the surrounding environment, cool it to the ambient temperature, and thereby start adsorbing CO2 and water from the ambient air again.

[0005] Even cold, dry air contains more water molecules than CO2 molecules, thus always adsorbing water along with it. During desorption under negative pressure, each CO2 gas molecule releases approximately three water molecules in the form of water vapor. Therefore, three out of the four volume fractions are water vapor.

[0006] WO 2020 / 212146 A1 discloses a DAC system (DirectAirCapture) with a container solution, wherein six separation chambers arranged in series and capable of operating in parallel are arranged inside the container.

[0007] WO 2021 / 239747 A1 discloses a method for adsorbing and desorbing a sorptionsmittel, which is used to capture CO2 directly from ambient air or a significantly diluted source in a periodic adsorption-desorption process. Here, water vapor is blown in after the adsorption chamber is sealed to displace residual oxygen that would cause degradation of the adsorbent material at elevated temperatures. Furthermore, the water vapor is used to directly heat the adsorbent material and provide energy for desorption. Finally, the water vapor is used as an inert gas, and the CO2 is pumped out of the chamber along with the inert gas.

[0008] Because heat transfer through air-permeable adsorbent materials is poor in a vacuum, heating energy is provided outside the chamber in the form of hot vapor, and the vaporized water is condensed in front of the vacuum pump. Since both the heating and cooling systems are located outside the CO2 adsorption / desorption chamber, the following disadvantages arise, leading to unnecessarily high investment and energy requirements: Because water desorbed under negative pressure at desorption temperatures between 80°C and 120°C always exists in vapor form, cooling is technically necessary before the vacuum pump in practice. This cooling is done by condensing water beforehand to unload the vacuum pump. A cost-effective implementation of the vacuum pump is a water ring pump; however, the water ring pump can only achieve a lower final pressure when the saturated vapor pressure is as low as possible within the pump. Typical pump temperatures are between 5°C and 20°C. - In existing technology, cooling is achieved using a condenser outside the chamber. Here, the CO2 to be pumped out is guided through a cold trap after exiting the chamber, so that as much desorbed water as possible is precipitated in front of the vacuum pump. As a result, the pipe cross-section must be made much larger, instead of 1 mole of CO2, by using 1 mole of CO2 + 3 moles of water.

[0009] - For large equipment, a negative pressure steam condenser for water is installed before the vacuum pump. This steam condenser is cooled by cooling water or by chilled water. The condenser, like the chamber itself, is made of corrosion-resistant materials, such as expensive special stainless steels or nickel-based steel. Nevertheless, the enthalpy of condensation must continue to be used for desorption, but this is usually "removed" by cooling water because the low cooling water temperature sought to achieve results in the uneconomical use of the remaining energy. Technically, the goal is to achieve the lowest possible cooling temperature to remove as much desorbed water as possible at the very beginning of the CO2 process chain through the lowest possible dew point, thus minimizing the overhead of conditional treatment for subsequent process steps. Furthermore, because CO2 causes a low pH (acidic condensate) in humid environments, strong dehumidification is required to at least meet stainless steel standards (typically: water removal at at least 25°C at a pressure level of 18 bar = first compression stage). Compression, filling, transportation, or widespread use typically requires anhydrous CO2 with residual water on the order of 210 ppm. Summary of the Invention

[0010] The subject of this invention is a CO2 separation apparatus according to independent claim 1, wherein a water vapor generating unit for providing water vapor has at least one heating surface arranged in a separation chamber and at least one cooling surface arranged in the separation chamber, wherein the heating surface is used to vaporize water disposed thereon, and the cooling surface is used to condense the water vaporized in the separation chamber for re-vaporization.

[0011] Furthermore, the subject of the present invention is a method according to independent claim 12, wherein water disposed on a heating surface arranged in a separation chamber is vaporized by means of a heating surface arranged in the separation chamber to provide water vapor in the separation chamber, and the water vaporized in the separation chamber is condensed by means of at least one cooling surface arranged in the separation chamber to be revaporized.

[0012] The proposed solution overcomes the drawbacks of existing technologies by providing a simple and inexpensive steam generation unit arranged inside or within the separation chamber, which also includes a condensation function. This allows for a significantly smaller steam condenser before the vacuum pump, or even its complete elimination when using an inexpensive water ring pump. Furthermore, investment in equipment hardware, on-site installation, and piping costs are significantly reduced. A significantly smaller total energy requirement for operating the CO2 separation unit also exists, as the condensation energy can be readily used, for example, by means of a heat exchanger, as vaporization energy for CO2 release methods.

[0013] Furthermore, the modularity of the entire system can be further simplified.

[0014] The CO2 separation device is constructed to separate CO2 from a delivered air stream by means of a CO2 separation method. The concept of "separation" within the scope of this invention includes every meaningful method of separating or separating CO2 (carbon dioxide) from the air, wherein CO2 molecules are bound and / or attached and / or deposited and / or accepted on a CO2 separating agent.

[0015] Here, the CO2 separation device can be specifically configured to separate CO2 from the conveyed airflow by means of a CO2 separation method, wherein the separation occurs while energy or heat is dissipated to the airflow. The CO2 separation method is preferably an adsorption method, especially an adsorption method and / or an absorption method. Therefore, CO2 separation can be carried out, in particular, by means of at least one of the following methods or a mixture thereof: - Chemical adsorption methods -Physical adsorption methods - Chemical absorption methods -Physical absorption methods Furthermore, the CO2 separation device is configured to release CO2 from a CO2 separating agent by means of a CO2 release method. The concept of "release" within the scope of this invention includes every meaningful manner of releasing or expelling CO2 (carbon dioxide) from a CO2 separating agent, wherein the detachment and / or release and / or expulsion of CO2 molecules from the CO2 separating agent takes place.

[0016] Here, the CO2 separation device is specifically configured to release or remove CO2 from a CO2 separating agent by means of a CO2 release method, wherein CO2 is released from the CO2 separating agent when energy or heat is introduced into the CO2 separating agent.

[0017] CO2 separation is preferably achieved through desorption. Therefore, CO2 release can be particularly accomplished by at least one of the following methods or a mixture thereof: - Chemical desorption methods -Physical desorption methods The preferred CO2 separation device is configured to periodically perform CO2 separation and CO2 release methods. Specifically, the CO2 separation device is configured to periodically perform adsorption and desorption methods. The operating principle of the CO2 separation device can, for example, be similar to that described in WO 2020 / 212146 A1 mentioned at the beginning.

[0018] The concept of "transporting" or "being transported" within the scope of this invention primarily includes a process of actively implementing or facilitating, and thereby technically controlled or regulated, the transport of airflow by means of a blower unit or fan unit of a CO2 separation device. However, the concept of "transporting" or "being transported" can also include a passively implemented or facilitated process of transporting airflow, without departing from the scope of this invention. Therefore, the airflow can be transported in any manner, such as naturally (as wind).

[0019] The CO2 separating agent can be arranged in a separation chamber. The CO2 separating agent is preferably solid-state. In particular, the CO2 separating agent can include solid (correspondingly functionalized) adsorbents, such as solid adsorbents and / or solid absorbents. Therefore, the CO2 separating agent can, for example, have a fibrous or non-woven solid as a carrier structure with a substrate, the substrate being selected from the group consisting of: resins, polymers, ceramics, zeolites, silicates, organometallic compounds, organic materials such as cellulose or activated carbon, and combinations thereof. The substrate can also be specifically functionalized with amines, calcium carbonate, or other components configured to chemically or physically bind CO2.

[0020] Furthermore, the CO2 separating agent can be manufactured in a permeable manner. Additionally, the CO2 separating agent can be manufactured in a pourable manner.

[0021] To exemplify CO2 adsorption / absorption on amine compounds, such as ion exchange resin VP OC 1065, CO2 and water first attach to the molecules of the amine compound, and then CO2 is strongly bound together with water through a chemical reaction, so that it works even at low CO2 concentrations.

[0022] The CO2 separation device has at least one separation chamber. Preferably, the CO2 separation device has a plurality of separation chambers arranged in a series adjacent to each other, the separation chambers being separated from each other, in particular, by means of a common partition wall. The adjacently arranged separation chambers can operate in parallel using both CO2 separation and CO2 release methods. That is, in other words, when one separation chamber is operating or running using the CO2 separation method, another separation chamber is operating or running using the CO2 release method, and vice versa.

[0023] The CO2 separation unit can have a valve unit with multiple, particularly operable, valves to close the separation chamber for CO2 release methods. The valve unit can have an inlet valve arranged in an inlet passage for the supplied or drawn-in airflow and configured to close the inlet passage and isolate the separation chamber upstream. Furthermore, the valve unit can have an outlet valve arranged in an outlet passage for the airflow used for CO2 reduction and configured to close the outlet valve and isolate the separation chamber downstream. Additionally, the valve unit can have a CO2 valve arranged in a CO2 exhaust passage for discharging the separated CO2 and configured to open the CO2 exhaust passage to selectively discharge the separated / combined and re-released CO2 from the separation chamber.

[0024] The CO2 separation device has a water vapor generation unit for providing water vapor in the separation chamber for the CO2 release method.

[0025] According to the present invention, the steam generating unit has at least one heating surface arranged in a separation chamber for vaporizing water disposed thereon. Here, the heating surface can be arranged inside the separation chamber or can be configured as an inward-facing portion of the separation chamber. Therefore, the heating surface can also be configured as a heating wall. Thus, the heating surface provides energy for releasing CO2 or desorbing CO2 and water under negative pressure, or the heating surface is configured to provide energy for releasing CO2 or desorbing CO2 and water under negative pressure.

[0026] Advantageously, the heating surface is arranged below the CO2 separating agent. Particularly advantageously, the heating surface is arranged on the bottom of the separation chamber, or more specifically, constructed as part of the bottom of the separation chamber. Therefore, the heating surface can be constructed as a heated bottom. This allows for very efficient heating of the CO2 separating agent above it by means of the rising steam generated, with minimal manufacturing overhead.

[0027] Preferably, the heating surface is configured to be actively heated. For this purpose, the CO2 separation device may have a heating unit with a heating serpentine tube and / or an electric heating element (such as a resistance heating element, a Peltier element, etc.).

[0028] Furthermore, it is advantageous that the heating surface is configured such that the water arranged on the heating surface is distributed in a planar manner. This can be achieved in particular by the heating surface being inclined or at least having an inclination and / or being structured or having structured portions, thereby maximizing the surface area for water vaporization. Here, for example, structuring can be achieved by ribs or fins, wherein superheating of water vapor can also be achieved by the portions of the heating surface extending from the wetted surface. Furthermore, superheating can also be achieved by a separate heating unit after the water has completely vaporized.

[0029] According to the present invention, the steam generating unit has at least one cooling surface arranged in a separation chamber for condensing the water vaporized in the separation chamber for re-vaporization or subsequent vaporization. Here, the cooling surface can be arranged inside the separation chamber or can be configured as an inward-facing portion of the separation chamber. Therefore, the cooling surface can also be configured as a cooling wall.

[0030] Advantageously, the cooling surface is arranged above and / or on the side of the CO2 separating agent. Particularly advantageously, the cooling surface is arranged on the sidewall and / or roof of the separation chamber, particularly configured as a part of the sidewall and / or roof of the separation chamber. Therefore, the cooling surface can be configured as a cooled sidewall and / or a cooled roof. Alternatively or supplementarily, the cooling surface can also be arranged in the CO2 discharge channel for discharging the separated CO2 from the separation chamber, particularly configured as a part of the channel wall of the CO2 discharge channel. Therefore, the cooling surface can be configured as a cooled CO2 discharge channel wall. Thus, with minimal manufacturing overhead, the portion of water vapor that has not condensed on the CO2 separating agent and the desorbed water can be cooled and condensed on their way to the vacuum pump for revaporization.

[0031] The cooling surface is preferably configured for active cooling. Therefore, the CO2 separation unit can, for example, have a cooling unit with a cooling serpentine tube.

[0032] Furthermore, it is advantageous that the heating and cooling surfaces are configured and arranged relative to each other such that water condensed on the cooling surface accumulates, particularly in a planar manner, on the heating surface due to gravity, so as to be re-vaporized. In other words, water condensed on the cooling surface flows down from the cooling surface, especially the cooled chamber sidewalls, under gravity and accumulates on the heating surface, especially the heated chamber floor.

[0033] Furthermore, it is advantageous that the heating and cooling surfaces can be thermally coupled or coupled together, particularly by means of heat pumps and / or heat pipe systems. This allows condensation heat or condensation energy to be transferred, for example, to the cooling medium, so that it can then be advantageously used for water vaporization, i.e., as energy for CO2 desorption.

[0034] Furthermore, it is advantageous to arrange a receiving unit for the CO2 separating agent in the separation chamber, the receiving unit being thermally decoupled relative to the heating surface and / or cooling surface. The CO2 separating agent can, of course, be arranged in the receiving unit of the separation chamber. Preferably, the heating surface and / or cooling surface are arranged in the receiving unit spaced apart from the receiving unit, especially from the CO2 separating agent.

[0035] Therefore, the CO2 separator is preferably arranged such that water vaporized on the heated chamber floor must first flow through the CO2 separator, with the water vapor preferably guided through the CO2 separator from the channel outlet side. The water vapor then passes through the CO2 separator as it heats up and condenses as much as possible, and exits the CO2 separator again at the channel inlet side. The remaining water vapor is then guided through or along the nearby cooled chamber wall, thus making good use of the cooling surface.

[0036] The CO2 separation unit may also include at least one of the following units: -Especially a blower unit with multiple fans for conveying airflow; - Pumping units or vacuum pumps used to provide overpressure and / or negative pressure for CO2 release or desorption methods; - An electric heating unit used to provide additional heating to the separating agent for CO2 release or desorption methods; - Sensor unit used in separation and release methods; - A control unit for controlling and / or regulating the separation and release method.

[0037] The control unit can be configured to connect to other control units and / or the central control unit of a CO2 separation device or a higher-level system via radio transmission, such as WLAN, Bluetooth, near-field communication, etc.

[0038] The CO2 separator is preferably configured statically. In particular, the CO2 separator can be part of the building's air conditioning system, especially integrated within the building's internal air conditioning system. Here, the separation chamber of the CO2 separator can be connected to the building's air conditioning circuit.

[0039] According to the invention, water disposed on a heating surface arranged in the separation chamber is vaporized by means of a heating surface arranged in the separation chamber to provide water vapor in the separation chamber, and the water vaporized in the separation chamber is condensed by means of at least one cooling surface arranged in the separation chamber to be revaporized.

[0040] Therefore, the following process can be generated, for example: 1) Introducing water volume suitable for filling the chamber space as water vapor in cases where, for example, no water volume is provided at the bottom of the chamber or there is water volume from condensation in the previous process cycle.

[0041] 2) The water is heated by a heating surface preferably heated by a heating medium (the CO2 separator is still cold). At the latest, the separation chamber is sealed relative to the ambient air to vaporize the water (displacing the air and residual oxygen so that the CO2 separator does not degrade during heating) and the remaining air is blown out with water vapor before the vacuum pump at normal pressure.

[0042] 3) Create negative pressure and pump out air (oxygen from the air). Additionally, water is vaporized using a heated surface, where heat transfer prevents cooling. (Steps 2 and 3 are optional and can be interchanged.) 4) To perform continuous CO2 release or desorption, wherein the heating surface provides energy for desorption of CO2 and water under negative pressure.

[0043] 5) Water vapor that has not condensed on the CO2 separator or desorbed water is condensed via a cooling surface on its way to the vacuum pump. The heat of condensation is transferred to the cooling medium of the cooling surface so that it can be reused for desorption. Attached Figure Description

[0044] The invention will now be explained in detail by way of example with reference to the accompanying drawings. Wherein: Figure 1 The schematic diagram illustrates the construction principle of a CO2 separation device according to the prior art. Figure 2 A schematic diagram of the CO2 separation device according to the present invention is shown; and Figure 3 It shows Figure 2 A cross-sectional view AA of the CO2 separation device. Detailed Implementation

[0045] In the following description of preferred embodiments of the prior art and the present invention, the same or similar reference numerals are used for elements shown in different figures and that serve similar functions, wherein repeated descriptions of elements are omitted.

[0046] Figure 1The schematic construction of a CO2 separation device 100 according to the prior art is shown. The CO2 separation device 100 is configured to separate CO2 (carbon dioxide) from an air stream 104 delivered by means of a blower unit 102 by means of an adsorption-desorption process that can be periodically performed.

[0047] For this purpose, the CO2 separation device 100 has a separation chamber 106 for receiving a CO2 separating agent 107 or an adsorbent 107. The separation chamber 106 has an inlet valve 108 at an inlet passage 110 for the intake airflow 104, which is configured to close the inlet passage 110 and isolate the separation chamber 106 upstream. Furthermore, the separation chamber 106 has an outlet valve 112 at an outlet passage 114 for the CO2 reduction airflow 104', which is configured to close the outlet passage 114 and isolate the separation chamber 106 downstream. Additionally, the separation chamber 106 has a CO2 valve 116 arranged in a CO2 discharge passage 118 and configured to open the CO2 discharge passage 118 to discharge the adsorbed (i.e., bound / filtered) and re-desorbed (i.e., released) CO2 and vaporous water from the separation chamber 106.

[0048] Here, the separated CO2 and vaporized water are pumped into the separation chamber 106 by means of a pumping unit 120 or a vacuum pump 120, wherein a water vapor condenser 122 arranged outside the separation chamber 106 is connected upstream of the vacuum pump 120.

[0049] In addition, the CO2 separation device 100 has a heating unit 124 for additional heating of the adsorbent 107 and a water vapor generating unit 126 arranged outside the separation chamber 106 for providing water vapor for the CO2 release method or desorption method.

[0050] exist Figure 2 and Figure 3 The CO2 separation device 10 according to the invention is schematically shown in cross-sectional view AA. The CO2 separation device 10 is, in principle, the same as that according to... Figure 1 The CO2 separation device 100 is similarly constructed and capable of operation.

[0051] However, with Figure 1Compared to the CO2 separation device 100, the CO2 separation device 10 has a steam generation unit 12 for providing water vapor 14, which is arranged inside or within the separation chamber 15. The steam generation unit 12 has a heating surface 16 arranged in the separation chamber 15 and a cooling surface 20 arranged in the separation chamber 15, wherein the heating surface is used to vaporize water 18 disposed thereon, and the cooling surface is used to condense the vaporized water 14' in the separation chamber 15 for re-vaporization. Because the steam generation unit 12 also includes a condensation function, it is more efficient than... Figure 1 Compared to the CO2 separation device 100, the water vapor condenser 122 has been eliminated.

[0052] The heating surface 16 is arranged below the adsorbent 107 and is configured as part of the heated chamber bottom 22 of the separation chamber 15.

[0053] The cooling surface 20 is disposed on the side of the adsorbent 107 and is configured as part of the cooled chamber sidewall 24. The cooling surface 20 is also configured as part of the channel wall 26 of the CO2 discharge channel 118 for discharging the separated CO2 from the separation chamber 15.

[0054] The heating surface 16 or the heated chamber bottom 22 and the cooling surface 20 or the cooled chamber sidewall 24 are arranged separately from the adsorbent 107, which is received in a receiving unit 28 that is thermally decoupled from the heating surface 16 and the cooling surface 22.

[0055] Furthermore, the heating surface 16 and the cooling surface 20 are configured and arranged relative to each other such that water 18' condensed on the cooling surface 20 accumulates in a planar manner on the heating surface 16 due to gravity, so as to be re-vaporized.

[0056] The heating surface 16 is configured to be actively heated via the heating serpentine tube 30, and the cooling surface 20 is configured to be actively cooled via the cooling serpentine tube 32. Here, the heating surface 16 and the cooling surface 20 can be coupled or coupled to each other thermally by means of the heat pump 34, so that the condensation heat or condensation energy obtained on the cooling surface 20 can be advantageously used for the vaporization of water 18, that is, as energy for CO2 desorption.

[0057] If an embodiment includes an "AND / OR" connection between a first feature and a second feature, it should be interpreted as follows: the embodiment, in one implementation, has not only the first feature but also the second feature, and in another implementation, it has either only the first feature or only the second feature.

Claims

1. A CO2 separation device (10) for separating CO2 from a conveyed air stream (104) by means of a CO2 release method, the CO2 separation device having a separation chamber (15) for receiving a CO2 separating agent (107) and a water vapor generating unit (12) for providing water vapor in the separation chamber (15) for the CO2 release method, characterized in that, The steam generating unit (12) for providing steam (14) has at least one heating surface (16) arranged in the separation chamber (15) and at least one cooling surface (20) arranged in the separation chamber (15), wherein the heating surface is used to vaporize water (18) arranged thereon, and the cooling surface is used to condense the water (14') vaporized in the separation chamber (15) for revaporization.

2. The CO2 separation device (10) according to claim 1, characterized in that, The heating surface (16) is arranged below the CO2 separating agent (107).

3. The CO2 separation device (10) according to claim 1 or 2, characterized in that, The heating surface (16) is arranged on the bottom (22) of the separation chamber (15), and is specifically constructed as part of the bottom (22) of the separation chamber (15).

4. The CO2 separation device (10) according to any one of the preceding claims, characterized in that, The heating surface (16) is particularly inclined and / or structurally configured such that the water (18) arranged on the heating surface is distributed in a planar manner.

5. The CO2 separation device (10) according to any one of the preceding claims, characterized in that, The cooling surface (20) is arranged above the CO2 separating agent (107) and / or on the side of the CO2 separating agent (107).

6. The CO2 separation device (10) according to any one of the preceding claims, characterized in that, The cooling surface (20) is arranged on the sidewall (24) and / or roof of the separation chamber (15), and is particularly configured as part of the sidewall (24) and / or roof of the separation chamber (15).

7. The CO2 separation device (10) according to any one of the preceding claims, characterized in that, The cooling surface (20) is arranged in the CO2 discharge channel (118) for discharging the separated CO2 from the separation chamber (15), and is particularly constructed as part of the channel wall (26) of the CO2 discharge channel (118).

8. The CO2 separation device (10) according to any one of the preceding claims, characterized in that, The heating surface (16) and the cooling surface (20) are configured and arranged relative to each other such that water (18') condensed on the cooling surface (20) accumulates in a planar manner on the heating surface (16) due to gravity, so as to be re-vaporized.

9. The CO2 separation device (10) according to any one of the preceding claims, characterized in that, The heating surface (16) is configured to be actively heated and / or the cooling surface (20) is configured to be actively cooled.

10. The CO2 separation device (10) according to any one of the preceding claims, characterized in that, The heating surface (16) and the cooling surface (20) are thermally coupled or coupled to each other, especially by means of a heat pump (34) and / or a heat pipe system.

11. The CO2 separation device (10) according to any one of the preceding claims, characterized in that, A receiving unit (18) for CO2 separating agent (107) is arranged in the separation chamber (15), the receiving unit being thermally decoupled relative to the heating surface (16) and / or the cooling surface (20).

12. The CO2 separation device (10) according to any one of the preceding claims, characterized in that, The CO2 separating agent (107) is arranged in the separation chamber (15), and particularly in the receiving unit (28) of the separation chamber (15).

13. The CO2 separation device (10) according to claim 11 or 12, characterized in that, The heating surface (16) and / or the cooling surface (20) are arranged in the receiving unit (28) at a distance from the receiving unit (28), especially from the CO2 separating agent (107).

14. A method (100) for separating CO2 from a conveyed air stream (104) by means of a CO2 separation device (10), said CO2 separation device having a separation chamber (15; 106) for receiving a CO2 separating agent (107) and a water vapor generating unit (12) for providing water vapor (24) in the separation chamber (15) for a CO2 release method, characterized in that, Water (18) disposed on the separation chamber (15) is vaporized by means of a heating surface (16) disposed in the separation chamber (15) to provide water vapor (24) in the separation chamber (15); and water (14') vaporized in the separation chamber (15) is condensed by means of at least one cooling surface (20) disposed in the separation chamber (15) to be revaporized.

Images