DE102022213750A1 - CO2 adsorption module for a CO2 adsorption device for separating CO2 (carbon dioxide) from air - Google Patents

Abstract

A CO2 adsorption module (30) for a CO2 adsorption device for separating CO2 from a supplied air stream (12) by means of an adsorption-desorption process is proposed, with a layer arrangement (32) having at least one air-permeable CO2 adsorption layer (34) with an adsorbent for adsorbing the CO2 from the supplied air stream (12) and at least one air-permeable heating layer (36) for heating the at least one air-permeable CO2 adsorption layer (34) for the desorption process, wherein the layer arrangement (32) is wound and/or bent and/or folded around at least one axis (50).

Description

State of the art

The invention relates to a CO2 adsorption module for a CO2 adsorption device for separating CO2 (carbon dioxide) from a supplied air stream by means of an adsorption-desorption process and a CO2 adsorption device for separating CO2 from a supplied air stream by means of an adsorption-desorption process. The invention further relates to a method for producing a CO2 adsorption module.

In order to limit the warming of the earth's atmosphere, there is discussion about actively reducing the CO2 content that has increased due to industrialization. So-called "direct air capture" systems (DAC) can also be used for this purpose. These actively remove and concentrate CO2 from the ambient air outdoors or via the ventilation system in buildings, for example, in one system, so that the CO2 can then be permanently bound in a second system, e.g. by injecting it into geological cavities.

The WO 2014/170184 A1 and the 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 step by conveying it using a fan (adsorption), so that in a second step, after the unit is closed off from the environment, the CO2 can be removed from the adsorber medium and fed to the second system via pipes (desorption). The adsorbent is designed as a mat made of functionalized filter wool made of cellulose, which is arranged between perforated sheets so that several of these sheets can be inserted into the adsorption unit as filters. On the one hand, the maintenance effort, especially when changing the filter mats, is very high. On the other hand, the system is energetically inefficient because the ratio of "function", i.e. adsorption on a supported adsorbent and thermal heating under negative pressure, to the "effort" (holding frame, fluid lines, square container) is poor and cannot be improved by scaling, i.e. building larger, because the additional effort increases with larger designs.

Disclosure of the invention

The subject matter of the present invention is a CO2 adsorption module for a CO2 adsorption device for separating CO2 from a supplied air stream by means of an adsorption-desorption process, with a layer arrangement comprising at least one air-permeable CO2 adsorption layer with an adsorbent for adsorbing the CO2 from the supplied air stream and at least one air-permeable heating layer for heating the at least one air-permeable CO2 adsorption layer for the desorption process, wherein the layer arrangement is wound and/or bent and/or folded around at least one axis.

• - eine Vielzahl von Einzelkammern aufweist, welche ausgebildet sind, jeweils ein, insbesondere genau ein entsprechendes vorangehend beschriebenes CO2-Adsorptionsmodul aufzunehmen, und/oder
• - zumindest einen Trägerrahmen aufweist, welcher ausgebildet ist, zumindest ein entsprechendes vorangehend beschriebenes CO2-Adsorptionsmodul aufzunehmen.

The present invention further relates to a CO2 adsorption device for separating CO2 from a supplied air stream by means of an adsorption-desorption process, comprising an adsorption-desorption chamber and a module receiving unit arranged therein, wherein the module receiving unit

• - has a plurality of individual chambers, each of which is designed to accommodate one, in particular exactly one corresponding CO2 adsorption module as described above, and/or
• - has at least one support frame which is designed to accommodate at least one corresponding CO2 adsorption module as described above.

• - Bereitstellen zumindest einer luftdurchlässigen CO2-Adsorptionslage mit einem Adsorbens zur Adsorption von CO2 aus einem zugeführten Luftstrom;
• - Anordnen zumindest einer luftdurchlässigen Erwärmungslage zum Erwärmen der zumindest einen luftdurchlässigen CO2-Adsorptionslage für einen Desorptions-Vorgang auf der zumindest einen luftdurchlässigen CO2-Adsorptionslage, um eine Lagenanordnung zu erhalten; und
• - Wickeln und/oder Biegen und/oder Falten der Lagenanordnung um zumindest eine Achse, um das CO2-Adsorptionsmodul zu erhalten.

The present invention also relates to a method for producing a CO2 adsorption module, in particular as described above, comprising the steps:

• - Providing at least one air-permeable CO2 adsorption layer with an adsorbent for adsorbing CO2 from a supplied air stream;
• - arranging at least one air-permeable heating layer for heating the at least one air-permeable CO2 adsorption layer for a desorption process on the at least one air-permeable CO2 adsorption layer in order to obtain a layer arrangement; and
• - Winding and/or bending and/or folding the layer arrangement about at least one axis to obtain the CO2 adsorption module.

The present invention further relates to a method for separating CO2 from a supplied air stream using a CO2 adsorption module or a CO2 adsorption device as described above.

The basic functionality of the CO2 adsorption module and the CO2 adsorption device can be analogous to the devices according to the introductory WO 2014/170184 A1 or. WO 2015/185434 A1 take place.

The CO2 adsorption module according to the invention offers a number of advantages due to the wound, bent and/or folded structure with the integrated heatable, air-permeable heating layer. Firstly, the heatable CO2 adsorption module can be manufactured very easily and inexpensively using known manufacturing processes (air filters, battery cells) and can be scaled almost as required, since both the CO2 adsorption layer and the heating layer can each be provided as web material. Secondly, the structure enables excellent use of the construction volume, so that the CO2 adsorption module in the wound embodiment can be used in a space-saving manner in both square and round, ie inexpensive but vacuum-resistant containers. Furthermore, there is a significantly lower maintenance effort compared to the state of the art, since the wound, bent and/or folded layer arrangement can be removed in one piece for maintenance and replaced with a new one, whereby the old layer arrangement, which has a still functional heating layer and a used/degenerated adsorber, can simply be unwound or unfolded. The used/degenerated CO2 adsorption layer can then be lifted off and recycled in a web process. The heating layer can be rebuilt with a new CO2 adsorption layer and wound, bent and/or folded to form a new CO2 adsorption module.

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

In the context of the present invention, the term "supply" or "supplied" includes both an actively carried out or initiated as well as a passively carried out 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 in a natural manner. When supplying the air flow, it can flow through or around the CO2 adsorption module or the layer arrangement or the respective layer.

The CO2 adsorption module is designed or configured for use in a CO2 adsorption device in order to separate CO2 from an air stream or the air by means of an adsorption-desorption process, i.e. a cyclically carried out or performed adsorption-desorption process.

The at least one air-permeable CO2 adsorption layer has a (correspondingly functionalized) adsorbent for adsorption, i.e. for binding or filtering the CO2 from the supplied air stream. The air-permeable CO2 adsorption layer can, for example, have a fibrous or nonwoven solid as a carrier structure with a base material which is 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 base material can in turn be specifically functionalized with amines, potassium carbonate or other components which are designed to chemically or physically bind CO2. The air-permeable CO2 adsorption layer can preferably have a cellulose nonwoven onto which an amine-based CO2 adsorbent is applied.

The at least one air-permeable CO2 adsorption layer is designed to be windable and/or bendable and/or foldable. The at least one air-permeable CO2 adsorption layer is preferably designed as a coherent, i.e. one-piece or one-piece continuous layer. The at least one air-permeable CO2 adsorption layer can advantageously be provided or present as a web product during production at the start of the process.

The at least one air-permeable heating layer is designed (during operation) to heat the at least one air-permeable CO2 adsorption layer for the desorption process, i.e. for the release of the adsorbed CO2. The air-permeable heating layer is designed to be air-permeable due to its structure, e.g. due to openings and/or its nature.

The at least one air-permeable heating layer is designed to be windable and/or bendable and/or foldable. The at least one air-permeable heating layer is preferably designed as a coherent, i.e. continuous layer. The at least one air-permeable heating layer can advantageously be provided or present as a web product at the start of the production process.

Advantageously, the at least one air-permeable heating layer can comprise or be a windable and/or foldable net, which is designed to be electrically heated for heating the at least one air-permeable CO2 adsorption layer. Accordingly, the at least one air-permeable heating layer can be designed, for example, as an electrical or heatable resistance net. For electrical heating, the net can comprise an electrically conductive polymer (heat inducing thermoplastics, HiT) or an electrically conductive polymer composite material. the electrically conductive polymer composite material comprises a polymer, in particular an electrically non-conductive polymer, and electrically conductive particles.

Alternatively or additionally, the at least one air-permeable heating layer can have a windable and/or foldable net on which a windable and/or foldable temperature control line is arranged for heating the at least one air-permeable CO2 adsorption layer. The temperature control line can, for example, be arranged in a meandering shape on the net. The temperature control line can in particular be a fluid-conducting temperature control line.

Preferably, the at least one air-permeable CO2 adsorption layer and the at least one air-permeable heating layer are connected to one another, in particular detachably, for example by means of a seam connection. Advantageously, the at least one air-permeable heating layer can be designed as a support structure of the at least one air-permeable CO2 adsorption layer, wherein the at least one air-permeable CO2 adsorption layer is attached to the at least one air-permeable heating layer, in particular detachably. Alternatively or additionally, the at least one air-permeable CO2 adsorption layer and the at least one air-permeable heating layer can be held in position by means of a positive or non-positive connection or profiling, in particular during winding.

The at least one air-permeable CO2 adsorption layer and the at least one air-permeable heating layer together form a layer arrangement. The layer arrangement is designed to be windable and/or bendable and/or foldable. The layer arrangement is also designed to be air-permeable.

The layer arrangement can advantageously have air supply channels between the at least one air-permeable CO2 adsorption layer and the at least one air-permeable heating layer, which are realized in particular by a corresponding shape of the at least one air-permeable heating layer and/or a corresponding shape of the at least one air-permeable CO2 adsorption layer and/or spacer elements. Accordingly, the air supply channels extend between the layers along the layer plane or layer surface, whereby these intermediate spaces are realized by a corresponding shape or profiling of the layers perpendicular to the layer plane/layer surface and/or corresponding spacers. This is possible, for example, by means of warp and weft threads of different thicknesses; a 3D structuring similar to wire mesh or expanded metal; small spiral structures; woven or knitted spacers; attached "turrets"; inserted rods; a correspondingly partially punched out CO2 adsorption layer. This allows for better air flow through the layer arrangement along the layer plane or layer surface. On the one hand, this can optimize the air flow through the entire CO2 adsorption layer, since the air can initially flow through between the layers with little pressure loss - for example in the case of a wound CO2 adsorption module in the direction of the winding axis - and then be deflected radially outwards if necessary to ensure uniform air flow through all areas. On the other hand, it can be implemented very easily using known weaving techniques (e.g. from filtration technology). The at least one air-permeable heating layer can advantageously have a longitudinal overhang in the longitudinal direction of the layer arrangement at one longitudinal end or at both longitudinal ends compared to the at least one air-permeable CO2 adsorption layer. In this case, a connection section for the at least one air-permeable heating layer can also be arranged at one longitudinal end or at both longitudinal ends of the at least one air-permeable heating layer, said connection section extending in the transverse direction of the layer arrangement and projecting beyond the at least one air-permeable CO2 adsorption layer. This makes it possible to provide connections, i.e. electrical heating connections and/or line connections or fluid connections for the heating layer, in a very simple and cost-effective manner.

It is also advantageous if the layer arrangement has at least two air-permeable CO2 adsorption layers, between which the at least one air-permeable heating layer is arranged. In this case, it is advantageous if the at least two air-permeable CO2 adsorption layers have a transverse overhang on both sides in the transverse direction of the layer arrangement with respect to the at least one air-permeable heating layer arranged therebetween, at which they are connected to one another, in particular by means of a seam connection. In this case, a further air-permeable CO2 adsorption layer with the adsorbent can be arranged on the already arranged at least one air-permeable heating layer in order to then connect the two air-permeable CO2 adsorption layers at a transverse overhang which the two air-permeable CO2 adsorption layers have with respect to the at least one air-permeable heating layer arranged therebetween, in particular by means of a seam connection. This can ensure that the layer arrangement remains coherent during operation, with only the connected or sewn transverse overhang being cut off/opened during recycling. in order to be able to use the heating layer again.

The layer arrangement is wound and/or bent and/or folded around at least one axis.

In an advantageous embodiment of the CO2 adsorption module, the axis is a winding axis around which the layer arrangement is wound several times, so that the wound layer arrangement forms an adsorption coil. In the winding step, the layer arrangement can be wound several times around a winding axis to obtain an adsorption coil. In other words, the CO2 adsorption module is designed as a CO2-adsorbing coil. The adsorption coil is preferably cylindrical, in particular designed as a circular cylinder or elliptical cylinder. Consequently, the adsorption coil can advantageously be designed to be essentially rotationally symmetrical.

Advantageously, an air resistance element can be arranged on a base side, i.e. on the rear side of the adsorption coil opposite an inflow side, which in particular covers essentially the entire base side. The air resistance element is preferably realized by a section of the at least one wound air-permeable CO2 adsorption layer that projects on the base side in the direction of the winding axis and is connected, in particular, by means of a seam connection. In this case, in the winding step, a section of the at least one wound air-permeable CO2 adsorption layer that projects on a base side of the adsorption coil in the direction of the winding axis can be connected, in particular, by means of a seam connection, in order to form an air resistance element. On the one hand, the air flowing in the direction of the winding axis can be radially deflected or forced to flow radially through the CO2 adsorption layers by means of the air resistance element, whereby uniform flow occurs and the adsorption effect is increased. On the other hand, the air resistance element can be realized in a very simple manner, since the wound base side of the adsorption winding can be closed or sewn very easily, for example in a continuous web processing process, by utilizing the protrusion of the CO2 adsorption layer.

It is also advantageous if a housing, in particular a hollow cylinder-shaped housing, is provided which surrounds the adsorption coil on its circumference, the housing being hexagonal or circular-cylindrical on an outer side. Alternatively or additionally, the housing can have a shape on an inner side that is adapted to an outer contour of the adsorption coil. The housing can preferably be designed to be so stiff or rigid that it does not deform or deforms in a defined manner when there is a negative pressure during the desorption process. In other words, the adsorption coil is arranged in a single "adsorption box" in which it can be flowed axially during operation. Advantageously, an arrangement of several CO2 adsorption modules with a hexagonal housing in the adsorption-desorption chamber creates a honeycomb structure which enables better mechanical stiffening against the negative pressure during the desorption process due to shorter walls. Alternatively, installation is possible in cost-effective circular-cylinder-shaped standard pressure vessels, which can also be stacked to save space.

In a further advantageous embodiment of the CO2 adsorption module, the axis is a bending axis around which the layer arrangement is bent and/or a folding axis around which the layer arrangement is folded, so that the bent and/or folded layer arrangement forms an adsorption pocket. In other words, the CO2 adsorption module is designed as a CO2-adsorbing pocket. The inner walls of the adsorption pocket formed by the layer arrangement preferably have an angle of greater than or equal to 0° to less than or equal to 120° to one another. In this case, in the bending step, the layer arrangement can be bent around a bending axis, in particular up to an angle of greater than or equal to 0° to less than or equal to 120° and/or folded around a folding axis, in particular up to an angle of greater than or equal to 0° to less than or equal to 120°, in order to obtain an adsorption pocket.

It is also advantageous if the layer arrangement is bent about several bending axes and/or folded about several folding axes, so that the layer arrangement bent and/or folded several times forms several adsorption pockets, in particular an adsorption pocket filter with several adsorption pockets. In the bending step, the layer arrangement can be bent in a z-shape about several bending axes and/or in the folding step, the layer arrangement can be folded in a z-shape about several folding axes in order to obtain several adsorption pockets, in particular an adsorption pocket filter with several adsorption pockets. In other words, the web of the layer arrangement is continuously bent or folded in a z-shape, so that the surface normals of web sections alternately point towards or away from each other. The adsorption pockets formed can be each one held together by a seam.

The CO2 adsorption device is designed to separate CO2 from a supplied air stream by means of an adsorption-desorption process in an adsorption-desorption chamber. The CO2 adsorption device can have a valve unit which comprises one or more valves and is designed to open or close the adsorption-desorption chamber depending on the process. The valve unit can have an inlet valve which is arranged in an inlet channel for an intake air stream and is designed to close the inlet channel and to isolate the adsorption-desorption chamber upstream. The valve unit can also have an outlet valve which is arranged in an outlet channel for the CO2-reduced air stream and is designed to close the outlet channel and to isolate the adsorption-desorption chamber downstream. The valve unit can also have a CO2 valve which is arranged in a CO2 outlet channel and is designed to open the CO2 outlet channel in order to specifically discharge the adsorbed, i.e. bound/filtered and desorbed, i.e. released, CO2 from the adsorption-desorption chamber.

For desorption, the CO2 adsorption device can also have a pump unit which is designed to generate a negative pressure in the adsorption-desorption chamber. Furthermore, the CO2 adsorption device can have a pressure storage unit on the CO2 outlet channel for detachably receiving a CO2 pressure storage unit. Since 5-50 bar CO2 pressure should be achieved for this, the pump unit can have a high-pressure pump. The pump unit can therefore have a combination of vacuum pump and compressor, for example.

Understandably, the CO2 adsorption device for carrying out the cyclic adsorption-desorption process can have a correspondingly configured control unit, in particular a control unit which can connect to other control units and/or a central control unit by means of radio transmission such as Wi-Fi, Bluetooth, near-field communication, etc.

In particular, the CO2 adsorption device can be part of a building air conditioning system or integrated into an air conditioning system in a building. The adsorption-desorption chamber of the CO2 adsorption device can be integrated into the air conditioning circuit of the building, so that the fan already present there can quickly cool down the CO2 adsorption module, since there are no large heat capacities in the system to dampen it. The air conditioning system can also be temporarily set to a colder setting for cooling if this is advantageous in terms of overall energy.

The individual chambers can advantageously be designed in such a way that the CO2 adsorption modules can be pushed into them and pulled out again. The individual chambers can be cylindrical, in particular as circular cylinders or elliptical cylinders, and extend along a designated air flow direction. In addition, the individual chambers can have a shape on an inner side that is adapted to an outer contour of the adsorption coil. This further reduces the maintenance effort, since the adsorption coils can simply be pushed in and pulled out again from the front, which is much simpler and more cost-effective than replacing adsorber inserts according to the state of the art, since only simple and quick mechanical work is necessary.

Furthermore, it is also advantageous if the support frame is arranged and designed in such a way that when the CO2 adsorption device is used as intended, the adsorption pocket or pockets of the CO2 adsorption module are arranged hanging in the adsorption-desorption chamber. Accordingly, the adsorption pocket filter only needs to be "hung in", with the adsorption pockets hanging freely downwards. The advantage here is that, in contrast to a horizontal alignment of the adsorption pockets, the distance between the adsorption pockets is easily adjustable and they do not stick together, for example, even under adverse conditions.

Preferably, a CO2 adsorption module designed as an adsorption coil is/are accommodated in at least one individual chamber, in particular all individual chambers of the module receiving unit, and/or a CO2 adsorption module designed as an adsorption pocket filter is accommodated in at least one support frame, in particular all support frames of the module receiving unit.

drawings

• 1 eine schematische Darstellung eines Gesamtsystems umfassend eine erfindungsgemäße CO2-Adsorptionsvorrichtung;
• 2a-e einen Herstellungsprozess eines als Adsorptionswickel ausgebildeten CO2-Adsorptionsmoduls mit einer gewickelten Lagenanordnung;
• 3 eine weitere Ausführungsform einer Lagenanordnung mit Luftzufuhrkanäle;
• 4 eine Anordnung von Adsorptionswickeln mit einem sechskantförmigen Gehäuse;
• 5 eine Anordnung von Adsorptionswickeln mit einem kreiszylinderförmigen Gehäuse;
• 6a-f einen Herstellungsprozess eines als Adsorptionstaschenfilter ausgebildeten CO2-Adsorptionsmoduls mit einer gebogenen Lagenanordnung;
• 7 eine perspektivische Darstellung eines Adsorptionstaschenfilters; und
• 8 ein Ablaufdiagramm eines Verfahrens zum Herstellen eines CO2-Adsorptionsmoduls.

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

• 1 a schematic representation of an overall system comprising a CO2 adsorption device according to the invention;
• 2a -e a manufacturing process of a CO2 adsorption coil designed as an adsorption tion module with a wound layer arrangement;
• 3 another embodiment of a layer arrangement with air supply channels;
• 4 an arrangement of adsorption coils with a hexagonal housing;
• 5 an arrangement of adsorption coils with a circular cylindrical housing;
• 6a -f a manufacturing process of a CO2 adsorption module designed as an adsorption pocket filter with a curved layer arrangement;
• 7 a perspective view of an adsorption bag filter; and
• 8th a flow chart of a process for producing a CO2 adsorption module.

1 shows a CO2 adsorption device, which in its entirety is provided with the reference number 10.

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

The adsorption-desorption chamber 14 has an inlet valve 16 on an inlet channel 18 for the sucked-in air flow 12, which is designed to close the inlet channel 18 and to isolate the adsorption-desorption chamber 14 upstream. The adsorption-desorption chamber 14 further has an outlet valve 20 on an outlet channel 22 for the CO2-reduced air flow 12', which is designed to close the outlet channel 22 and to isolate the adsorption-desorption chamber 14 downstream. The adsorption chamber 14 also has a CO2 valve 24, which is arranged in a CO2 outlet channel 26 and is designed to open the CO2 outlet channel 26 in order to specifically discharge adsorbed, i.e. bound/filtered and desorbed, i.e. released CO2 from the adsorption-desorption chamber 14 into a system 28 for permanent CO2 removal with CO2 conditioning. A plurality of CO2 adsorption modules for adsorbing the CO2 from the supplied air stream 12 are arranged inside the adsorption-desorption chamber 14, which are described in more detail below.

2a -e show the manufacturing process of a first embodiment of a CO2 adsorption module 30 according to the invention with a wound layer arrangement 32.

This is done first according to 2a an air-permeable CO2 adsorption layer 34 with an adsorbent for adsorbing CO2 from the supplied air stream 12 is provided. The CO2 adsorption layer 34 is provided as a web. The air-permeable CO2 adsorption layer 34 is designed as a cellulose fleece on which an amine-based CO2 adsorbent is applied.

According to 2 B then an air-permeable heating layer 36 for heating the air-permeable CO2 adsorption layer 34 for the desorption process is arranged on the air-permeable CO2 adsorption layer 34 in order to obtain the layer arrangement 32. The air-permeable heating layer 36 is also provided as a web. The air-permeable heating layer 36 is designed as an electrical or heatable resistance network 36. The air-permeable heating layer 36 has a longitudinal projection 42 relative to the air-permeable CO2 adsorption layer 34 at one longitudinal end 40 in the longitudinal direction 38 of the layer arrangement 32. An opposite longitudinal end 44 of the air-permeable heating layer 36 is arranged without a projection within the air-permeable CO2 adsorption layer 34.

According to 2c At the two longitudinal ends 40, 44, connection sections 48 for the air-permeable heating layer 36 are arranged, which extend in the transverse direction 46 of the layer arrangement 32 and protrude beyond the air-permeable CO2 adsorption layer 34. The connection sections 48 function as heating connections 48 for the electrical resistance network 36.

According to 2d Finally, the layer arrangement 32 is wound several times around a winding axis 50 to obtain the CO2 adsorption module 30, which is designed as an adsorption winding 30. The adsorption winding 30 is cylindrical or designed as a circular cylinder. In 2d the CO2 adsorption module 30 or the adsorption coil 30 is shown in a front view.

2e shows a side view of the adsorption coil 30, which during operation is flowed against by the air stream 12 from a front side 51.

In 3 another embodiment of a layer arrangement 32 is shown in side view. In comparison to 2a -e, the layer arrangement 32 has air supply channels 52 between the air-permeable CO2 adsorption layer 34 and the air-permeable heating layer 36. The air supply channels 52 are formed by a corresponding corrugated shape of the air-permeable heating layer 36 and spacer elements 54. The air supply channels 52 extend in the adsorption coil 30 along the coil axis 50 from the front side 51 to an opposite rear side of the adsorption coil 30. This allows the air flow 12 to flow through between the layers 34, 36 in the direction of the coil axis 50 with little pressure loss, in order to then be deflected radially through the air-permeable CO2 adsorption layer 34 if necessary, and to ensure a uniform flow through the air-permeable CO2 adsorption layer 34.

The radial deflection of the air flow 12 could be "forced" by an air resistance element (not shown) arranged on the rear side of the adsorption winding 30. The air resistance element could be implemented, for example, by a section of the wound air-permeable CO2 adsorption layer 34 that projects over the rear side in the direction of the winding axis 50 and is connected, in particular, by means of a seam connection.

In 4 and 5 an arrangement of further embodiments of CO adsorption modules 30 or adsorption coils 30 is shown, which additionally have a hollow cylindrical housing 56. The housings 56 surround the respective adsorption coil 30 circumferentially. In the embodiment according to 4 the housings 56 are hexagonal on an outer side 58 and thus form a honeycomb structure in the arrangement, whereas the housings 56 of 5 are circular-cylindrical in shape. The housings 56 each have a shape on an inner side adapted to an outer contour of the adsorption coils 30.

6a -e show the manufacturing process of a further embodiment of a CO2 adsorption module 60 according to the invention with a curved layer arrangement 32.

The steps according to 6a and 6b correspond to the previously explained steps of 2a and 2 B with the difference that the air-permeable heating layer 36 has a longitudinal overhang 42 at each of its longitudinal ends 40, 44 relative to the air-permeable CO2 adsorption layer 34, which act as heating connections 48 for the electrical resistance network 36.

According to 6c a further air-permeable CO2 adsorption layer 34 with the adsorbent is arranged on the arranged air-permeable heating layer 36, so that the layer arrangement 32 has two air-permeable CO2 adsorption layers 34.

According to 6d the two air-permeable CO2 adsorption layers 34 are connected to one another by means of a seam connection 64 at a transverse overhang 62 which the two air-permeable CO2 adsorption layers 34 have with respect to the air-permeable heating layer 36 arranged therebetween.

According to 6e Finally, the layer arrangement 32 is bent in a Z-shape about several bending axes 66 to obtain the CO2 adsorption module 60, which is designed as an adsorption pocket filter 60 with several adsorption pockets 68. In 6e the CO2 adsorption module 60 or the adsorption bag filter 60 is shown in a front view.

6f shows a side view of the adsorption pocket filter 60, which during operation is flowed against by the air flow 12 of the front side 51, so that it can penetrate or flow into the adsorption pockets 68. As can also be seen, the adsorption pockets 68 are each held together by means of a seam connection 70.

In 7 a perspective view of the adsorption bag filter 60 with heating connections 48 is shown.

8th shows a flow chart of a method 100 for producing a CO2 adsorption module 30; 60. The method 100 comprises a step of providing 102 an air-permeable CO2 adsorption layer 34 with an adsorbent for adsorbing CO2 from a supplied air stream 12. The method 100 further comprises a step of arranging 104 at least one air-permeable heating layer 36 for heating the at least one air-permeable CO2 adsorption layer 34 for a desorption process on the air-permeable CO2 adsorption layer 34 in order to obtain a layer arrangement 32. The method 100 also comprises a step of winding 110 and/or bending 112 and/or folding 114 the layer arrangement 32 about at least one axis 50; 66 in order to form the CO2 adsorption module 30; 60 to receive.

The method 100 further comprises optional steps of arranging a further air-permeable CO2 adsorption layer 34 with the adsorbent on the already arranged at least one air-permeable heating layer 36 and connecting 108 the two air-permeable CO2 adsorption layers 34 at a transverse projection 62 which the two air-permeable CO2 adsorption layers 34 have with respect to the at least one air-permeable heating layer 36 arranged therebetween, in particular by means of a seam connection 64.

If an embodiment includes an “and/or” connection between a first feature and a second feature, this is to be read as meaning that the embodiment according to one embodiment has both the first feature and the second feature and according to another embodiment has either only the first feature or only the second feature.

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• WO 2014170184 A1 [0003, 0008]
• WO 2015185434 A1 [0003, 0008]

Claims (33)

CO2 adsorption module (30; 60) for a CO2 adsorption device (10) for separating CO2 from a supplied air stream (12) by means of an adsorption-desorption process, with a layer arrangement (32) having at least one air-permeable CO2 adsorption layer (34) with an adsorbent for adsorbing the CO2 from the supplied air stream (12) and at least one air-permeable heating layer (36) for heating the at least one air-permeable CO2 adsorption layer (34) for the desorption process, wherein the layer arrangement (32) is wound and/or bent and/or folded around at least one axis (50; 66). CO2 adsorption module (30; 60) according to Claim 1 , characterized in that the at least one air-permeable CO2 adsorption layer (34) is designed as a continuous layer (34). CO2 adsorption module (30; 60) according to Claim 1 or 2 , characterized in that the at least one air-permeable heating layer (36) is designed as a continuous layer. CO2 adsorption module (30; 60) according to one of the preceding claims, characterized in that the at least one air-permeable heating layer (36) has a windable and/or foldable net (36) which is designed to be electrically heatable for heating the at least one air-permeable CO2 adsorption layer (34) and/or on which a windable and/or foldable temperature control line is arranged for heating the at least one air-permeable CO2 adsorption layer (34). CO2 adsorption module (30; 60) according to one of the preceding claims, characterized in that the layer arrangement (32) between the at least one air-permeable CO2 adsorption layer (34) and the at least one air-permeable heating layer (36) has air supply channels (52), which are realized in particular by a corresponding shape of the at least one air-permeable heating layer (36) and/or a corresponding shape of the at least one air-permeable CO2 adsorption layer (34) and/or spacer elements (54). CO2 adsorption module (30; 60) according to one of the preceding claims, characterized in that the at least one air-permeable heating layer (36) has a longitudinal projection (42) in the longitudinal direction (38) of the layer arrangement (32) at one longitudinal end (40) or at both longitudinal ends (40, 44) relative to the at least one air-permeable CO2 adsorption layer (34). CO2 adsorption module (30; 60) according to Claim 6 , characterized in that at one longitudinal end (40) or at both longitudinal ends (40, 44) of the at least one air-permeable heating layer (36) there is arranged a connecting section (48) for the at least one air-permeable heating layer (36), which extends in the transverse direction (46) of the layer arrangement (32) and projects beyond the at least one air-permeable CO2 adsorption layer (34). CO2 adsorption module (30; 60) according to one of the preceding claims, characterized in that the at least one air-permeable CO2 adsorption layer (34) and the at least one air-permeable heating layer (36) are connected to one another, in particular detachably. CO2 adsorption module (30; 60) according to one of the preceding claims, characterized in that the layer arrangement (32) has at least two air-permeable CO2 adsorption layers (34), between which the at least one air-permeable heating layer (36) is arranged. CO2 adsorption module (30; 60) according to Claim 9 , characterized in that the at least two air-permeable CO2 adsorption layers (34) in the transverse direction (46) of the layer arrangement (32) have on both sides a transverse projection (62) with respect to the at least one air-permeable heating layer (36) arranged therebetween, at which they are connected to one another, in particular by means of a seam connection (64). CO2 adsorption module (30) according to one of the preceding claims, characterized in that the axis (50) is a winding axis (50) around which the layer arrangement (32) is wound several times, so that the wound layer arrangement (32) forms an adsorption winding (30). CO2 adsorption module (30) according to Claim 11 , characterized in that the adsorption coil (30) is cylindrical, in particular as a circular cylinder or elliptical cylinder. CO2 adsorption module (30) according to Claim 11 or 12 , characterized in that an air resistance element is arranged on a base side of the adsorption coil (30), which in particular covers substantially the entire base side. CO2 adsorption module (30) according to Claim 13 , characterized in that the air resistance The stand element is realized by a section of the at least one wound air-permeable CO2 adsorption layer (34) which projects on the base side in the direction of the winding axis (50) and is connected, in particular, by means of a seam connection. CO2 adsorption module (30) according to one of the Claims 11 until 14 , characterized by a housing (56), in particular a hollow cylinder, which circumferentially surrounds the adsorption coil (30), wherein the housing (56) is hexagonal or circular cylindrical on an outer side (58). CO2 adsorption module (30) according to one of the Claims 11 until 15 , characterized in that the housing (56) has on an inner side a shape adapted to an outer contour of the adsorption coil (30). CO2 adsorption module (60) according to one of the Claims 1 until 10 , characterized in that the axis (66) - is a bending axis (66) about which the layer arrangement (32) is bent, and/or - is a folding axis about which the layer arrangement (32) is folded, so that the bent and/or folded layer arrangement (32) forms an adsorption pocket (68). CO2 adsorption module (60) according to Claim 17 , characterized in that inner walls of the adsorption pocket (68) formed by the layer arrangement (32) have an angle to one another of greater than or equal to 0° to less than or equal to 120°. CO2 adsorption module (60) according to Claim 17 or 18 , characterized in that the layer arrangement (32) is bent about a plurality of bending axes (66) and/or folded about a plurality of folding axes, so that the layer arrangement (32) bent and/or folded several times forms a plurality of adsorption pockets (68), in particular an adsorption pocket filter (60) with a plurality of adsorption pockets (68). CO2 adsorption device (10) for separating CO2 from a supplied air stream (12) by means of an adsorption-desorption process, with an adsorption-desorption chamber (14) and a module receiving unit arranged therein, characterized in that the module receiving unit - has a plurality of individual chambers which are designed to each contain one, in particular exactly one CO2 adsorption module (30) according to one of the Claims 11 until 14 and/or - has at least one carrier frame which is designed to accommodate at least one CO2 adsorption module (60) according to one of the Claims 17 until 19 to record. CO2 adsorption device (10) according to Claim 20 , characterized in that the individual chambers are designed such that the CO2 adsorption modules (30) can be inserted into them and pulled out again therefrom. CO2 adsorption device (10) according to Claim 20 or 21 , characterized in that the individual chambers are cylindrical, in particular as circular cylinders or elliptical cylinders and extend along an intended air flow direction. CO2 adsorption device (10) according to one of the Claims 20 until 22 , characterized in that the individual chambers have on an inner side a shape adapted to an outer contour of the adsorption coil (30). CO2 adsorption device (10) according to one of the Claims 20 until 23 , characterized in that the support frame is arranged and designed such that when the CO2 adsorption device (10) is used as intended, the adsorption bag (68) or adsorption bags (68) of the CO2 adsorption module (60) is/are arranged hanging in the adsorption-desorption chamber (14). CO2 adsorption device (10) according to one of the Claims 20 until 24 , characterized in that in at least one individual chamber, in particular all individual chambers of the module receiving unit, a CO2 adsorption module (30) according to one of the Claims 11 until 14 , and/or in at least one support frame, in particular all support frames of the module receiving unit, a CO2 adsorption module (60) according to one of the Claims 17 until 19 is recorded. Method (100) for producing a CO2 adsorption module (30; 60), in particular according to one of the Claims 1 until 19 , comprising the steps: - providing (102) at least one air-permeable CO2 adsorption layer (34) with an adsorbent for adsorbing CO2 from a supplied air stream (12); - arranging (104) at least one air-permeable heating layer (36) for heating the at least one air-permeable CO2 adsorption layer (34) for a desorption process on the at least one air-permeable CO2 adsorption layer (34) in order to obtain a layer arrangement (32); and - winding (110) and/or bending (112) and/or folding (114) the layer arrangement (32) by at least an axis (50; 66) to receive the CO2 adsorption module (30; 60). Procedure (100) according to Claim 26 , characterized by the further steps: - arranging (106) a further air-permeable CO2 adsorption layer (34) with the adsorbent on the already arranged at least one air-permeable heating layer (36); and - connecting (108) the two air-permeable CO2 adsorption layers (34) at a transverse projection (62) which the two air-permeable CO2 adsorption layers (34) have with respect to the at least one air-permeable heating layer (36) arranged therebetween, in particular by means of a seam connection (64). Procedure (100) according to Claim 26 or 27 , characterized in that in the winding step (110) the axis (50) is a winding axis (50) around which the layer arrangement (32) is wound several times to obtain an adsorption winding (30). Procedure (100) according to Claim 28 , characterized in that in the winding step (110) a section of the at least one wound air-permeable CO2 adsorption layer (34) projecting on a base side of the adsorption roll (30) in the direction of the winding axis (50) is connected, in particular by means of a seam connection, in order to form an air resistance element. Procedure (100) according to Claim 26 or 27 , characterized in that in the step - of bending (112) the axis (66) is a bending axis (66) about which the layer arrangement (32) is bent, in particular up to an angle of greater than or equal to 0° to less than or equal to 120°; and/or - of folding (114) the axis is a folding axis about which the layer arrangement (32) is folded, in particular up to an angle of greater than or equal to 0° to less than or equal to 120°, in order to obtain an adsorption bag (68). Procedure (100) according to Claim 30 , characterized in that in the step - of bending (112) the layer arrangement (32) is bent in a z-shape about a plurality of bending axes (66); and/or - of folding (114) the layer arrangement (32) is folded in a z-shape about a plurality of folding axes in order to obtain a plurality of adsorption pockets (68), in particular an adsorption pocket filter (60) with a plurality of adsorption pockets (68). Method (100) according to one of the Claims 26 until 31 , characterized in that the at least one air-permeable CO2 adsorption layer (34) and/or the at least one air-permeable heating layer (36) are provided as web material at the start of the process. Method (100) for separating CO2 from a supplied air stream (12) using a CO2 adsorption module (30; 60) according to one of the Claims 1 until 19 or a CO2 adsorption device (10) according to one of the Claims 20 until 25 .

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