Co2 adsorption device for separating co2 (carbon dioxide) from air

Abstract

The invention relates to a CO2 adsorption device (10) for separating CO2 from a supplied airflow (12), in particular an airflow supplied by a ventilator unit, by means of an adsorption-desorption process which can be carried out cyclically, comprising an adsorption chamber (14), the interior (20) of which is equipped with an air-permeable separating element (22), said interior (20) being divided into a blow-in chamber (24), to which the airflow (12) can be supplied via an inlet opening (16), and an adsorption chamber (26), from which the CO2-reduced airflow (12') can be discharged via an outlet opening (18), by means of the air-permeable separating element (22). The adsorption chamber (26) is equipped with loosely arranged bulk material (28) consisting of CO2 adsorption bodies (30) and a heating unit (32) for heating the bulk material (28) consisting of CO2 adsorption bodies (30). In an intended use, the absorption chamber (26) is arranged over the blow-in chamber (24) such that the loosely arranged bulk material (28) consisting of CO2 adsorption bodies (30) is arranged so as to lie on the air-permeable separating element (22).

Description

[0001] Description

[0002] title

[0003] CO2 adsorption device for separating CO2 (carbon dioxide) from air

[0004] State of the art

[0005] The invention relates to a CO2 adsorption device for separating CO2 (carbon dioxide) from an air stream supplied, in particular by means of a fan unit, by means of a cyclically carried out adsorption-desorption process, a CO2 adsorption system with such a CO2 adsorption device and a method for introducing and / or removing a bed of CO2 adsorption bodies into a CO2 adsorption device.

[0006] To limit global warming, there is discussion about actively reducing the CO2 concentration that has increased due to industrialization. This could include the use of so-called "direct air capture" (DAC) systems. These systems actively remove and concentrate CO2 from the ambient air outdoors or via the ventilation system in buildings, for example, in a first system. This CO2 can then be permanently captured in a second system, for example, by injecting it into geological cavities.

[0007] WO 2014 / 170184 A1 and WO 2015 / 185434 A1 disclose such a first system, in which CO2 from the air is temporarily bound to an adsorber medium in a first system by conveying it using a fan (adsorption), so that in a second step, after the unit is sealed off from the environment, the CO2 can be removed from the adsorber medium and fed to the second system via pipelines (desorption). As is familiar to a person skilled in the art, adsorption is carried out under different physical conditions than desorption. This means that adsorption takes place, for example, at 25°C, 1013 mbar and a relative humidity of 50% RH, and desorbed at 80°C and 200 mbar. In order to carry out desorption at an elevated temperature on the adsorbent, the adsorbent must be heated. The adsorbents degenerate at elevated temperatures, so everything must be cooled down quickly afterwards.

[0008] Although cost-effective heating can be achieved, for example, by means of existing heat flows that are coupled from neighboring systems to the first system by means of fluid-conducting temperature control lines, the disadvantage is that heat exchangers, pumps, valves, sensors and pipes must be used for this and the heating of the adsorbent must be carried out by means of a heating coil register, for example (the adsorbent is arranged around the heating coils), so that these devices require high investment costs and, above all, have a high heat capacity (weight of the stainless steel used for pipes, etc.).

[0009] Since the adsorbent can only absorb CO2 again after cooling, the system must be cooled to near ambient temperature after desorption for effective operation. Cooling with ambient air takes a comparatively long time in existing systems due to the high heat capacity, which also causes the adsorbent to degrade unnecessarily. Active cooling requires the heating system described above to cool down again with cooling water, requiring additional pumps and heat exchangers, etc., making the overall system of the first plant more complex and thus less self-sufficient.

[0010] By using a heat pump, the required external thermal energy can be significantly reduced at high temperatures for desorption and / or at low temperatures for cooling, but the energy requirement then shifts to electrical energy for the heat pump, while the effort and costs for piping, valves, pumps and heat exchangers tend to increase even further.

[0011] If an adsorbent change is necessary in a system according to the previously mentioned publications, the heat transfer fluid must be drained from the fluid-heated coil (heating coils). Then, the lines are disconnected, the coil is removed, the adsorber is replaced, the coil is reinstalled, and the fluid connections are reconnected. Finally, the fluid lines must be checked for leaks before the system can be refilled. Projected systems consist of >1,000 initial systems, each with >10 carriers, which must be replaced regularly.

[0012] Disclosure of the invention

[0013] The present invention relates to a CO2 adsorption device for separating CO2 (carbon dioxide) from an air stream supplied, in particular by means of a fan unit, by means of a cyclically carried out adsorption-desorption process, comprising an adsorption chamber, in the interior of which an air-permeable separating element is arranged, wherein the interior is divided by means of the air-permeable separating element into an injection chamber, into which the air stream can be supplied via an inlet opening, and into an adsorbent chamber, from which the CO2-reduced air stream can be discharged via an outlet opening, wherein a loosely arranged bed of CO2 adsorption bodies and a heating unit for heating the bed of CO2 adsorption bodies are arranged in the adsorbent chamber, wherein in a proper use the adsorbent chamber is arranged above the injection chamber,so that the loosely arranged bed of CO2 adsorption bodies is arranged resting on the air-permeable separating element.

[0014] The present invention further relates to a CO2 adsorption system comprising a CO2 adsorption device according to the type described above and a control unit for controlling the heating unit for the adsorption-desorption process.

[0015] The present invention also relates to a method for introducing and / or discharging a bed of CO2 adsorption bodies into a CO2 adsorption device according to the type described above or into a CO2 adsorption system according to the type described above for separating CO2 (carbon dioxide) from an air stream supplied, in particular by means of a fan unit, by means of a cyclically carried out adsorption-desorption process, wherein the bed of CO2 adsorption bodies is blown into and / or sucked out of the adsorption chamber of the CO2 adsorption device via the outlet opening and / or the adsorbent opening of the adsorption chamber.

[0016] The CO2 adsorption device according to the invention now makes it possible to very simply and efficiently use large-scale approaches for CO2 capture, such as horizontal tanks or containers or (ISO) containers, which offer significant cost-reduction potential through scaling the size instead of parallelizing complex systems. Furthermore, the CO2 adsorption device according to the invention allows for very simple insertion and replacement of the CO2 adsorption material and, if necessary, the heating unit, thus significantly reducing maintenance requirements.

[0017] The basic operation of the CO2 adsorption device can be analogous to the device according to WO 2015 / 185434 A1 described in the introduction.

[0018] In the context of the present invention, the term “separation” includes a separation, for example the capture of CO2 from the air.

[0019] In the context of the present invention, the term "supply" or "supplied" encompasses both actively performed or initiated and passively performed or initiated supply of the air flow. Consequently, the air flow can be technically controlled or regulated, e.g., by means of a fan unit, but also supplied naturally.

[0020] The adsorption chamber can be designed as a horizontally oriented circular cylinder, in particular a horizontal tank or container, or as a cuboid, in particular a container, preferably an ISO container. The diameter or height and length of the adsorption chamber are understandably adapted to the application or the air requirement. For example, the diameter or height can be 4 to 5 m and the length of the adsorption chamber can be 10 to 20 m. However, the adsorption device can also be integrated into an air conditioning system, so that the diameter or height and length of the adsorption chamber can be correspondingly smaller. Arranged inside the adsorption chamber is an air-permeable separating element which divides the interior into an injection chamber, i.e. an injection region, and an adsorbent chamber, i.e. an adsorbent region. In other words, the adsorption chamber has two sub-chambers orIt has areas that are / are separated by the air-permeable separating element. Due to the air permeability of the separating element, the injection chamber and the adsorbent chamber are fluidly connected to each other. The air-permeable separating element can, for example, be grid-shaped or plate-shaped.

[0021] Since the bed of CO2 adsorption bodies rests on the air-permeable separating element, and the separating element is thus in heat-transferring contact with the CO2 adsorption bodies, the air-permeable separating element can advantageously be designed to be heatable, i.e., directly heatable, in order to heat the bed of CO2 adsorption bodies for the desorption process. In this case, the air-permeable separating element can preferably be designed to be electrically heatable and, in particular, can have corresponding electrical connections for this purpose. The air-permeable separating element can comprise an electrically conductive polymer or an electrically conductive polymer composite material for electrical heating. This measure makes it very easy to accelerate or optimize the heating of the CO2 adsorption bodies and thus the desorption process.

[0022] The air flow can be fed into the injection chamber via an inlet opening of the adsorption chamber, from there into the adsorbent chamber via the air-permeable separating element, and then discharged from the adsorbent chamber via an outlet opening of the adsorption chamber. The injection chamber, the adsorbent chamber, and the air-permeable separating element arranged therebetween are designed such that the supplied air flow can be guided essentially homogeneously or evenly from the injection chamber into the adsorbent chamber and thus through the bed of CO2 adsorption bodies. Accordingly, the injection chamber together with the air-permeable separating element are used to guide the air flow homogeneously or evenly through the bed of CO2 adsorption bodies in order to achieve optimized CO2 adsorption. The inlet opening is preferably arranged on a top side or a lateral outside of the adsorption chamber.The outlet opening is preferably located on an underside or a lateral outer side of the adsorption chamber. The outlet opening can be designed as a manhole, e.g., for assembly or maintenance purposes. The outlet opening can be designed such that the bed of CO2 adsorption bodies can be introduced into the adsorbent chamber, in particular blown in, and / or removed from the adsorbent chamber, in particular blown out.

[0023] Alternatively or additionally, at least one adsorbent opening can be provided on the adsorption chamber, by means of which the bed of CO2 adsorption bodies can be introduced into the adsorbent chamber, in particular blown in, and / or removed from the adsorbent chamber, in particular blown out. The at least one adsorbent opening can be arranged on a top side or a lateral outer side of the adsorption chamber.

[0024] The heating unit is designed to heat the bed of CO2 adsorption bodies in order to specifically release adsorbed CO2, i.e., to initiate or accelerate the desorption process. The heating unit is preferably in heat-transferring contact with the bed of CO2 adsorption bodies.

[0025] The heating unit preferably comprises at least one heatable heating element. More preferably, the heating unit comprises a plurality of heatable heating elements, between which the loose bed of CO2 adsorption elements is arranged in heat-transferring contact. The at least one heatable heating element can be selected from the group consisting of: heating grid, heating plate, heating coil, heating tube, and heating rod.

[0026] It is advantageous if the at least one heatable heating element is designed to be electrically heatable, in particular if it has appropriate electrical connections for this purpose. The electrical heatability of the heating element offers a number of advantages over, for example, the fluid-conducting or water-conducting temperature control lines according to the prior art described in the introduction.

[0027] Firstly, the electrically heated heating body offers a much more dynamic temperature profile, as it eliminates components or bodies with high heat capacity, such as water, robust pipes, connecting pieces, T-pieces, and possibly heat exchangers, allowing the electrically heated heating body to heat up and cool down more quickly. In particular, an existing fan unit is sufficient to quickly cool the CO2 adsorption bodies, as there are no large heat capacities to dampen the heat. This enables the desired faster transition between desorption and adsorption, thereby increasing overall efficiency and reducing energy consumption.

[0028] Secondly, the complexity of the CO2 adsorption device is significantly reduced, as no heat exchangers are required and there may be no need for active cooling after thermal desorption, for example, in temperate climates. This also results in lower maintenance requirements and a better suitability for stand-alone installation with low maintenance requirements.

[0029] Due to the reduced damping mass, the power requirement for the desorption phase is comparable to the requirement of a heat pump that heats a heat transfer fluid for the desorption phase.

[0030] It is also advantageous if the at least one heatable heating body comprises an electrically conductive polymer (heat inducing thermoplastics, HiT) or an electrically conductive polymer composite material for electrical heating. The electrically conductive polymer composite material can comprise a polymer, in particular an electrically non-conductive polymer, and electrically conductive particles. The electrically conductive polymer or the polymer composite material is very suitable for the heating body because it heats up quickly due to its high electrical resistance and cools down quickly again due to its low heat capacity. It is also robust and has good chemical resistance. It is particularly advantageous that a maximum temperature can be set for these composite materials, i.e. the heating is self-limiting, so that excessively high temperatures can be reliably avoided.Since the thermal expansion of the polymer causes the conductive components to move away from each other when heated, the resistance increases with increasing temperature.

[0031] Advantageously, the at least one heatable heating body can be designed to be permeable to air, in particular in the form of a grid or perforated plate or perforated, so that the supplied air flow can flow through it largely unhindered.

[0032] The at least one heatable heating body can be designed to be pluggable into the interior of the adsorption chamber and / or to be insertable into the interior of the adsorption chamber from the outside.

[0033] A plurality of substantially vertically aligned heatable heating bodies, in particular air-permeable heating grids and / or air-permeable heating plates arranged parallel to one another, is preferred.

[0034] The basic functionality of the CO2 adsorption bodies can be analogous to that described in WO 2014 / 170184 Al.

[0035] The CO2 adsorption bodies are designed or configured for use in a CO2 adsorption device to separate CO2 from an air stream or the air by means of a cyclically carried out or performed adsorption-desorption process.

[0036] The loose bed of CO2 adsorption bodies is arranged in the adsorbent chamber, resting on the air-permeable separating element. This is achieved, among other things, by arranging the adsorbent chamber above the injection chamber when used as intended.

[0037] The CO2 adsorption bodies are designed to be pourable or flowable. In other words, a mixture of CO2 adsorption bodies has a pourable or flowable form. Accordingly, a plurality of CO2 adsorption bodies constitutes a bed. The bed can, for example, have a bulk density of greater than or equal to 0.1 l / 100g to less than or equal to 50 l / 100g, preferably greater than or equal to 1 l / 100g to less than or equal to 20 l / 100g, and / or a total pressure drop of less than or equal to 400 Pa, particularly preferably less than or equal to 200 Pa.

[0038] To improve pourability or flowability, the CO2 adsorption bodies can be spherical or pellet-shaped. In the context of the present invention, the terms spherical and ball-shaped are used essentially synonymously. The CO2 adsorption bodies can be in the form of “grains.” The CO2 adsorption bodies can have an average diameter of greater than or equal to 0.5 mm to less than or equal to 5 mm, preferably of greater than or equal to 1 mm to less than or equal to 2 mm. However, the CO2 adsorption bodies can also be in the form of “cotton balls.” The CO2 adsorption bodies can have an average diameter of greater than or equal to 5 mm to less than or equal to 100 mm, preferably greater than or equal to 10 mm to less than or equal to 50 mm, particularly preferably greater than or equal to 15 to less than or equal to 30 mm.

[0039] The CO2 adsorption bodies can contain CO2-adsorbing fibers as well as stabilizing fibers, which are resistant to moisture and mechanical stress and form a fiber composite with the CO2-adsorbing fibers.

[0040] The CO2-adsorbing fibers are designed to bind or filter CO2 from the air by means of adsorption. For this purpose, the CO2-adsorbing fibers can comprise or consist of at least one corresponding adsorbent with a CO2-binding property. The CO2-adsorbing fibers can be produced in a manner known to those skilled in the art. Accordingly, the CO2-adsorbing fibers themselves can have a CO2-binding property. Alternatively or additionally, the CO2-adsorbing fibers can be coated, impregnated, or functionalized with the at least one adsorbent to achieve the CO2-binding property. The CO2-adsorbing fibers can comprise or consist of carrier fibers as a carrier structure without CO2-binding properties.The carrier fibers can comprise or consist of a base material selected from at least one material from the following group: resins, polymers, ceramics, zeolites, silicates, organometallic compounds, organic materials such as cellulose or activated carbon. The carrier fibers can in turn be specifically coated, impregnated, or functionalized with amines, potassium carbonate, or other components designed to chemically or physically bind CO2. Preferably, the CO2-adsorbing fibers comprise or consist of cellulose fibers functionalized with amines. It should be noted that while amines can be suitably bonded to cellulose, they cannot be bonded to the aforementioned polymer fibers or synthetic fibers.

[0041] The stabilizing fibers, in turn, can be designed to hold the fiber composite in a spherical shape, so that the CO2 adsorption bodies are pourable and / or flowable. In other words, instead of known CO2 adsorption mats made of functionalized cellulose, a spherical or ball-shaped fiber composite with additional stabilizing fibers can be provided. These fibers are resistant to moisture and mechanical stress and are further designed to hold the fiber composite in a spherical or spherical / ball shape—analogous to so-called "filter balls"—so that the CO2 adsorption bodies are pourable and / or flowable.

[0042] In the context of the present invention, a fiber composite is understood to mean a mechanical composite of the stabilizing fibers and the CO2-adsorbing fibers. The stabilizing fibers and the CO2-adsorbing fibers are preferably processed together, in particular woven together to form a fabric and / or spun into a yarn to form the fiber composite. Alternatively, the CO2-adsorbing fibers can be formed (intrinsically) within the stabilizing fibers due to the manufacturing process. In other words, the CO2-adsorbing fibers were formed within a stabilizing fiber structure during manufacturing. This can be achieved, for example, by freeze-drying the CO2-adsorbing fibers, e.g., cellulose fibers, from a solution in which stabilizing fibers are already floating.Alternatively, the stabilizing fibers can form a sphere-like outer network, within whose hollow space the CO2-adsorbing fibers are enclosed. The fiber composite preferably has a stabilizing fiber content of between greater than or equal to 10 mass% and less than or equal to 90 mass%.

[0043] The stabilizing fibers are different from the CO2-adsorbing fibers. It is advantageous if the stabilizing fibers are selected from the group consisting of: polymer fibers, synthetic fibers, cellulose-free natural fibers, glass fibers, mineral fibers, rock wool fibers, carbon fibers, or combinations thereof. The polymer fibers and the cellulose-free natural fibers are preferably selected from the group consisting of: PE (polyethylene), PP (polypropylene), PVDF (polyvinylidene fluoride), PET (polyethylene terephthalate), wool, or mixtures thereof. The polymer fibers can be made from recycled polymer fiber material, in particular from recycled PET bottle material, and / or the carbon fibers can be made from recycled carbon fiber material, in particular chopped carbon fibers from recycling processes. This selection offers the advantage that these fibers orMaterials that exhibit the required resistance to moisture and mechanical stress and are also easy to process. Cellulose is excluded here, as it would lose the required porosity over time, especially under high humidity and mechanical stress, and would thus collapse and felt. Carbon fibers also offer the advantage of being used for electrical conduction, allowing the fill itself to be heated.

[0044] Changing the adsorption material is disproportionately expensive for larger CO2 adsorption devices or systems, since the separation efficiency and maintenance costs increase linearly with the separation efficiency. In the chemical industry, the CAPEX with higher capacities should only increase according to the average degression exponent 2 / 3, i.e., if the capacity is doubled, the expenditure should on average be 2 A(2 / 3) times, i.e. 1.587 times. OPEX should only be tied to the energy requirement - and personnel costs for operation and maintenance should ideally be independent of the size of the system. The exposed bed of CO2 adsorption bodies offers the great advantage that the CO2 adsorption bodies - in contrast to the CO2 adsorption mats, which are laborious to install in the CO2 adsorption device - are designed with a spherical or spherical / ball shape, so that they can be blown into the CO2 adsorption device and sucked out again. This significantly simplifies the exchange, i.e., introduction and removal process of the adsorption material, and thus offers significantly lower maintenance costs. Furthermore, the spherical or ball-shaped CO2 adsorption bodies offer better space utilization than CO2 adsorption mats and thus higher volume efficiency.

[0045] However, the spherical or ball-shaped CO2 adsorption bodies are subject to mechanical stress during operation, especially at higher filling levels, as well as during the injection and extraction processes, to which the framed CO2 adsorption mats are not exposed and therefore do not have the required stability. Consequently, the stabilizing fibers are resistant to moisture and mechanical stress, preventing, in particular, the CO2 adsorption bodies from collapsing during operation and from matting and thus clumping in the injection or extraction pipe.

[0046] The CO2 adsorption device can further comprise a valve unit which comprises a plurality of valves and is designed to form a closed adsorption chamber for desorption. The valve unit can hereby comprise an inlet valve which is arranged in an inlet channel fluidically connected to the inlet opening and is designed to close the inlet channel and to isolate the adsorption chamber upstream. The valve unit can further comprise an outlet valve which is arranged in an outlet channel for the CO2-reduced air flow fluidically connected to the outlet opening and is designed to close the outlet channel and to isolate the adsorption chamber downstream. The valve unit can also comprise a CO2 valve which is arranged in a CO2 outlet channel and is designed to open the CO2 outlet channel in order to adsorb the adsorbed, i.e. bound / filtered and desorbed again, i.e.to specifically apply the CO2 released from the adsorption chamber.

[0047] For desorption, the CO2 adsorption device can further comprise a pump unit designed to generate a negative pressure in the adsorption chamber. Furthermore, the CO2 adsorption device can comprise a pressure accumulator unit on the CO2 outlet channel for detachably accommodating a CO2 pressure accumulator. Since a CO2 pressure of 5-50 bar should be achieved for this purpose, the pump unit can comprise a high-pressure pump. Thus, the pump unit can comprise, for example, a combination of a vacuum pump and a compressor.

[0048] The CO2 adsorption system preferably comprises a fan unit for supplying and / or discharging the air flow, wherein the control unit is designed to further control the fan unit for the adsorption-desorption process.

[0049] The CO2 adsorption system may further comprise a straightening unit designed to straighten elevations in the bed of CO2 adsorption bodies so that the height distribution of the bed in the interior of the adsorption chamber is substantially uniform. The straightening unit may be configured, for example, as a vibrating unit or as a scraper unit, in particular a scraper bar.

[0050] In the process for introducing and / or discharging the bed, new CO2 adsorption bodies are preferably blown in and then sucked out again after their degeneration due to several adsorption-desorption cycles.

[0051] Drawings

[0052] The invention is explained in more detail below with reference to the accompanying drawings. They show:

[0053] Fig. 1 is a schematic representation of a CO2-

[0054] Adsorption device with a bed of CO2 adsorption bodies; and

[0055] Fig. 2 is a perspective view of the interior of the CO2 adsorption device according to the invention from Fig. 1. Fig. 1 shows a CO2 adsorption device which is provided in its entirety with the reference number 10.

[0056] The CO2 adsorption device 10 is designed to separate CO2 (carbon dioxide) from an air stream 12 supplied by a fan unit (not shown) using a cyclic adsorption-desorption process. For this purpose, the CO2 adsorption device 10 has an adsorption chamber 14.

[0057] The adsorption chamber 14 is designed as a horizontal tank 14. The adsorption chamber 14 has an inlet opening 16 on a lateral outer side for supplying the air stream 12 into the adsorption chamber 14 and an outlet opening 18 for discharging the CO2-reduced air stream 12' from the adsorption chamber 14.

[0058] An air-permeable separating element 22 is arranged in an interior space 20 of the adsorption chamber 14. The air-permeable separating element 22 is designed in the shape of a grid. The air-permeable separating element 22 divides the interior space 20 of the adsorption chamber 14 into an injection chamber 24 and an adsorbent chamber 26. Due to the air permeability of the separating element 22, the injection chamber 24 and the adsorbent chamber 26 are fluidly connected to one another.

[0059] Arranged in the adsorbent chamber 26 are a loosely arranged bed 28 of CO2 adsorption bodies 30 and a heating unit 32 for heating the bed 28 of spherical CO2 adsorption bodies 30. In the intended use shown, the adsorbent chamber 26 is arranged above the injection chamber 24, so that the loosely arranged bed 28 of CO2 adsorption bodies 30 rests on the air-permeable separating element 22. The heating unit 32 has a plurality of heatable heating bodies 34, between which the loose bed 28 of CO2 adsorption bodies 30 is arranged in heat-transferring contact. As can be seen in more detail from Fig. 2, the heatable heating bodies 34 are designed as air-permeable heating grids 34. The air-permeable heating grids 34 are essentially aligned vertically and parallel to one another.In the embodiment shown, the air-permeable heating grids 34 are designed to be electrically heated and have corresponding electrical connections 36 for this purpose.

[0060] In a preferred embodiment, the air-permeable separating element 22 can also be designed to be heatable, in particular electrically heatable, in order to heat the bed 28 of CO2 adsorption bodies 30 for the desorption process.

[0061] Consequently, the air stream 12 can be fed via the inlet opening 16 of the adsorption chamber 14 into the injection chamber 24, from there via the air-permeable separating element 22 into the adsorbent chamber 26 through the bed 28 of CO2 adsorption bodies 30, and then discharged from the adsorbent chamber 26 via an outlet opening 18 of the adsorption chamber 14. The injection chamber 24, the adsorbent chamber 26, and the air-permeable separating element 22 arranged therebetween are designed such that the supplied air stream 12 can be fed from the injection chamber 24 essentially homogeneously or evenly into the adsorbent chamber 26 and thus through the bed 28 of CO2 adsorption bodies 30 in order to achieve optimized CO adsorption.

Claims

Claims 1. CO2 adsorption device (10) for separating CO2 from an air stream (12) supplied, in particular by means of a fan unit, by means of a cyclically executable adsorption-desorption process, comprising an adsorption chamber (14) in the interior (20) of which an air-permeable separating element (22) is arranged, wherein the interior (20) is divided by means of the air-permeable separating element (22) into an inlet chamber (24), into which the air stream (12) can be supplied via an inlet opening (16), and into an adsorption chamber (26), from which the CO2-reduced air stream (12') can be discharged via an outlet opening (18), wherein in the adsorption chamber (26) a loosely arranged bed (28) of CO2 adsorbents (30) and a heating unit (32) for heating the bed (28) of CO2 adsorption bodies (30) are arranged, wherein in an intended use the adsorption chamber (26) is arranged above the injection chamber (24),so that the loosely arranged bed (28) of CO2 adsorption bodies (30) is arranged resting on the air-permeable separating element (22).

2. CO2 adsorption device (10) according to claim 1, characterized in that the heating unit (32) is in heat-transferring contact with the bed (28) of CO2 adsorption bodies (30).

3. CO2 adsorption device (10) according to claim 1 or 2, characterized in that the heating unit (32) has at least one heatable heating element (34), in particular a plurality of heatable heating elements (34), between which the loose bed (28) of CO2 adsorption elements (30) is arranged in heat-transferring contact.

4. CO2 adsorption device (10) according to 3, characterized in that the at least one heatable heating element (34) is selected from the group consisting of: heating grid (34), heating plate, heating coil, heating tube, heating rod. A CO2 adsorption device (10) according to claim 3 or 4, characterized in that the at least one heatable heating element (34) is air-permeable, in particular in the form of a grid, perforated sheet, or perforated plate. A CO2 adsorption device (10) according to any one of claims 3 to 5, characterized in that the at least one heatable heating element (34) is designed to be pluggable into the interior (20) of the adsorption chamber (14) and / or to be inserted into the interior (20) of the adsorption chamber (14) from the outside. A CO2 adsorption device (10) according to any one of claims 3 to 6, characterized by a plurality of substantially vertically oriented heatable heating elements (34), in particular air-permeable heating grids (34) and / or air-permeable heating plates arranged parallel to one another.A CO2 adsorption device (10) according to any one of the preceding claims, characterized in that the air-permeable separating element (22) is designed in a grid or plate-like form. A CO2 adsorption device (10) according to any one of the preceding claims, characterized in that the air-permeable separating element (22) is also designed to be heated in order to heat the bed (28) of CO2 adsorption media (30) for the desorption process. A CO2 adsorption device (10) according to any one of the preceding claims, characterized in that the at least one heatable heating element (34) and / or the air-permeable separating element (22) is / are designed to be electrically heated, in particular having corresponding electrical connections (36) for this purpose. A CO2 adsorption device (10) according to claim 10, characterized in that the at least one heatable heating element (34) and / or the air-permeable separating element (22) is designed to be electrically heated. The CO2 adsorption device (10) according to one of the preceding claims is characterized in that the adsorption chamber (14) is designed as a horizontally oriented circular cylinder (14), in particular a horizontal tank (14), or as a cuboid, in particular a container, preferably an ISO container. The CO2 adsorption device (10) according to one of the preceding claims is characterized in that the outlet opening (18) is designed as a manhole. The CO2 adsorption device (10) according to one of the preceding claims is characterized by at least one adsorbent opening by means of which the packing (28) of CO2 adsorbents (30) can be introduced, in particular blown in, into the adsorbent chamber (26) and / or discharged, in particular blown out, from the adsorbent chamber (26).CO2 adsorption device (10) according to one of the preceding claims, characterized in that. - the inlet opening (16) is located on a top or a side exterior of the adsorption chamber (14); and / or - the outlet opening (18) is located on a bottom or a lateral outside of the adsorption chamber (14); and / or - which has at least one adsorbent opening on a top or a side exterior of the adsorption chamber (14). CO2 adsorption device (10) according to one of the preceding claims, characterized in that the CO2 adsorption elements (30) are spherical or pellet-shaped. CO2 adsorption system with a CO2 adsorption device (10) according to one of the preceding claims and a control unit for controlling the heating unit (32) for the adsorption-desorption process. A CO2 adsorption system according to claim 17, characterized by a fan unit for supplying and / or removing the airflow (12, 12'), wherein the control unit is further configured to control the fan unit for the adsorption-desorption process. A CO2 adsorption system according to claim 17 or 18, characterized by a leveling unit configured to level any elevations in the packing (28) of CO2 adsorption media (30) so that the height distribution of the packing (28) in the interior (20) of the adsorption chamber (14) is substantially uniform.Method (100) for introducing and / or discharging a bed (28) of CO2 adsorption media (30) into a CO2 adsorption device (10) according to one of claims 1 to 16 or into a CO2 adsorption system according to claim 17 or 18 for separating CO2 from an air stream (12) supplied, in particular by means of a fan unit, by means of a cyclically carried out adsorption-desorption process, wherein the bed (28) of CO2 adsorption media (30) is blown into and / or extracted from the adsorption chamber (14) of the CO2 adsorption device (10) via the outlet opening (18) and / or the adsorption opening of the adsorption chamber (14).

Images