Adsorbent regeneration column having partition spaces and low-temperature adsorption regeneration system

Abstract

The present disclosure relates to the technical field of flue gas adsorption and purification. Disclosed are an adsorbent regeneration column having partition spaces and a low-temperature adsorption regeneration system. The adsorbent regeneration column having the partition spaces comprises a column body and partition components. A heating cavity and a degassing cavity are formed in the column body. A suction port communicated with the degassing cavity is formed in the side wall of the column body. An adsorbent that has reached saturation is heated by means of the heating cavity and then enters the degassing cavity, so as to desorb regenerated rich gas; and the regenerated rich gas is discharged from the suction port. The partition components are arranged in the degassing cavity. The partition components have partition spaces and flow channels. The flow channels are used for allowing the adsorbent to flow from the top to the bottom of the partition spaces. The partition spaces are communicated with the suction port, so that the regenerated rich gas is discharged from the suction port after passing through the partition spaces. According to the adsorbent regeneration column having the partition spaces of the present disclosure, the partition spaces can be formed in the degassing cavity, so that the adsorbent in the degassing cavity can be evenly suctioned, so as to improve the suction effect in the degassing cavity.

Description

Adsorbent regeneration tower with interlayer space and low-temperature adsorption regeneration system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on and claims the priority of Chinese patent application with application number 202311573038.3 and application date November 23, 2023. The entire content of the Chinese patent application is hereby incorporated into this disclosure by reference. Technical Field

[0003] The present disclosure relates to the technical field of flue gas adsorption purification, and in particular to an adsorbent regeneration tower with an interlayer space and a low-temperature adsorption regeneration system. Background Art

[0004] Flue gas adsorption purification is a commonly used flue gas purification method, in which the pollutant components are removed from the flue gas by using the adsorbent in the adsorption tower. After the adsorption saturated adsorbent is inactivated, it is regenerated to restore its activity for recycling.

[0005] In the prior art, adsorbent regeneration typically involves heating the adsorbent within a regeneration tower to desorb pollutants from the adsorbent, generating a regeneration-rich gas rich in pollutants (e.g., nitrogen oxides). This regeneration-rich gas is then pumped out of the tower through a suction port located within the tower. However, the discharge of the regeneration-rich gas from the regeneration tower in the prior art is inefficient, resulting in poor separation of the desorbed regeneration-rich gas from the adsorbent, creating a need for improvement. Summary of the Invention

[0006] The present disclosure is based on the inventors' findings and understanding of the following facts and problems:

[0007] In the related art, the adsorbent is heated and regenerated within the regeneration tower to desorb regeneration-rich gas, which is then discharged from the regeneration tower's suction port. The inventors discovered that the regeneration-rich gas desorbed from the adsorbent at locations within the regeneration tower far from the suction port is difficult to effectively extract and separate from the adsorbent. Instead, the regeneration-rich gas easily flows out of the regeneration tower along with the adsorbent through the regenerated adsorbent outlet, reducing the regeneration efficiency of the adsorbent, affecting the adsorption capacity of the regenerated adsorbent, and hindering the recycling of the adsorbent, thereby increasing costs.

[0008] The present disclosure aims to at least partially address one of the technical problems in the related art. To this end, the present disclosure proposes an adsorbent regeneration tower with an interlayer space, which can uniformly extract the adsorbent, thereby improving the extraction and separation effect of the regenerated rich gas.

[0009] The present disclosure also provides a low-temperature adsorption regeneration system.

[0010] The adsorbent regeneration tower with an interlayer space disclosed herein comprises:

[0011] A tower, wherein a heating chamber and a degassing chamber are provided in the tower, and a suction port connected to the degassing chamber is provided on the side wall of the tower, and the adsorbent saturated with adsorption is heated in the heating chamber and then enters the degassing chamber, so that the adsorbent is regenerated and desorbed to produce regenerated rich gas, and the regenerated rich gas is discharged through the suction port; and

[0012] A barrier component is arranged in the degassing chamber, and the barrier component has a barrier space and a flow channel. The barrier space is connected to the suction port, and the barrier space and the flow channel are arranged at intervals. The adsorbent flows from the top of the barrier space to the bottom of the barrier space through the flow channel, and the regenerated rich gas desorbed by the adsorbent is discharged from the suction port through the barrier space.

[0013] The adsorbent regeneration tower with an interlayer space disclosed in the present invention forms an interlayer space in the degassing chamber by arranging an interlayer component. During the process of the adsorbent flowing downward along the flow channel, the regenerated rich gas desorbed from the adsorbent enters the interlayer space. Since the interlayer space is spaced relative to the flow channel in the horizontal cross-section of the tower, a more uniform negative pressure environment can be formed in the interlayer space and the degassing chamber when suction is drawn through the suction port, so that the suction effect on the regenerated rich gas can be evenly distributed on the entire cross-section of the degassing chamber, thereby achieving uniform suction of the degassing chamber, that is, uniform suction of the adsorbent, thereby improving the separation effect of the regenerated rich gas and the adsorbent, the regeneration effect of the adsorbent and the adsorption capacity of the adsorbent after regeneration, which is beneficial to the recycling of the adsorbent and reduces the cost.

[0014] In some embodiments, the partition component includes a plurality of drop tubes, which are arranged vertically, and the tube cavities of the drop tubes form the flow channel. At least a portion of adjacent drop tubes are arranged at intervals to form the partition space, and the upper ends of the plurality of drop tubes are connected to each other to prevent the adsorbent from falling into the partition space outside the drop tubes.

[0015] The present invention arranges multiple dropping pipes at intervals, and the adsorbent flows downward through the dropping pipes, forming an interlayer space between the dropping pipes. The upper ends of the dropping pipes are connected to each other to prevent the adsorbent from entering the interlayer space from the upper ends of the dropping pipes. Therefore, the interlayer component has a simple structure, and the adsorbent layer formed on the lower side of the interlayer space can have a larger contact area with the interlayer space, which is beneficial to the separation of the regenerated rich gas from the adsorbent, and can improve the consistency of the interlayer space and the consistency of the flow channel, and can more conveniently achieve uniform and consistent suction.

[0016] In some embodiments, a first through hole is provided on the wall of the drop tube, and the aperture of the first through hole is smaller than the particle size of the adsorbent; and / or

[0017] A second through hole is provided on the wall of the blanking tube, the axis of the second through hole is inclined relative to the axis of the blanking tube, and the outer end of the second through hole is higher than the inner end of the second through hole; and / or

[0018] The drop tube is a tapered tube, and the cross-sectional area of ​​the drop tube gradually decreases from top to bottom; and / or

[0019] The vertical height of the drop tube is 80 mm to 300 mm; and / or

[0020] The distance between adjacent blanking tubes is 200mm-550mm; and / or

[0021] The inner diameter of the lower end of the drop tube is 40 mm to 160 mm.

[0022] The present invention provides a first through hole and / or a second through hole on the tube wall of the drop tube so that the adsorbent can be sucked when flowing through the drop tube, thereby improving the separation effect and suction effect of the regenerated rich gas, and at the same time preventing the adsorbent from flowing into the interlayer space through the first through hole or the second through hole.

[0023] By setting the drop pipe as a conical tube, the adsorbent located above the interlayer component is easily collected in the drop pipe. Moreover, while ensuring the same contact area between the interlayer space and the adsorbent layer, the volume of the interlayer space can be reduced, the compactness of the regeneration tower can be improved, and a greater negative pressure can be formed in the interlayer space under the same suction force, thereby further improving the suction effect.

[0024] The present invention can determine the size of the interlayer space and the size of the adsorbent pile formed on the lower side of the drop tube by limiting the height of the drop tube, the distance between adjacent drop tubes and the inner diameter of the lower end of the drop tube. While ensuring that there is sufficient contact area between the interlayer space and the adsorbent accumulation layer on the lower side of the interlayer space, the volume of the interlayer space is reduced, so that the flow channel volume for the adsorbent to flow in the degassing chamber and the time the adsorbent is in the degassing chamber can meet the requirements of adsorbent regeneration and desorption, and a negative pressure environment can be formed more reliably and stably to ensure the suction effect of the regenerated rich gas.

[0025] In some embodiments, the barrier component comprises:

[0026] A plurality of partitions are provided, wherein the partitions extend along a first direction, the first direction is orthogonal to the vertical direction, the plurality of partitions are spaced apart in a second direction, the second direction is orthogonal to the first direction and the vertical direction, the flow channel is formed between adjacent partitions, and on the longitudinal section of the tower, the partitions are bent to form the partition space at the bottom of the partitions.

[0027] The present invention forms an interlayer space under each partition by bending the partitions. The interlayer spaces under the multiple partitions are relatively independent, and the multiple interlayer spaces are all connected to the suction port, making the negative pressure environment of each interlayer space more consistent. Because the flow channel between adjacent partitions is a long strip of slots, and the adsorbent forms a stacked material layer with a certain stacking angle after flowing under the partition, the interlayer space and the stacked material layer are staggered, thereby providing a larger contact area between the interlayer space and the adsorbent, which is conducive to the regeneration rich gas escaping from the adsorbent into the interlayer space, increasing the suction area of ​​the adsorbent, and improving the suction effect.

[0028] In some embodiments, in the longitudinal section of the tower, the partition is arc-shaped or inverted V-shaped; and / or

[0029] A confluence cavity is provided on the side wall of the tower, and the confluence cavity is communicated with the interlayer space and the suction port; and / or

[0030] The plurality of partitions are arranged in parallel, and the spacing between adjacent partitions is 40 mm to 160 mm; and / or

[0031] The dimension of the partition in the second direction is 200 mm to 450 mm.

[0032] The present disclosure employs arc-shaped or inverted V-shaped partitions to form cavities, with the openings of the partition cavities facing downward, thereby creating interlayer spaces beneath the partitions. Because the interlayer spaces beneath each partition are relatively independent, a confluence cavity is provided on the sidewall of the tower to converge the airflow within each interlayer space to the suction port, facilitating the connection of components such as the suction pipe and the extraction of regenerated enriched gas.

[0033] The spacing between adjacent partitions disclosed herein can ensure that the adsorbent flows smoothly downward in the flow channel, and can prevent the adsorbent pile from being too large and too thick, resulting in incomplete suction of the adsorbent in the middle of the adsorbent pile.

[0034] Since the adsorbent flows downward along the flow channel and has a stacking angle after flowing under the interlayer component, the width of the partition not only affects the normal flow of the adsorbent, but also affects the space between adjacent adsorbent piles. When the partition width is relatively narrow, the distance between adjacent adsorbent piles is small, resulting in a relatively small V-groove between adjacent adsorbent piles. When the partition width is relatively wide, the distance between adjacent adsorbent piles is large, resulting in a relatively large V-groove between adjacent adsorbent piles. A V-groove that is too small can easily lead to a small effective contact area and short contact time between the adsorbent and the interlayer space. A V-groove that is too large can easily lead to an excessively large volume of the interlayer space, affecting the suction effect.

[0035] In some embodiments, the barrier component comprises:

[0036] Multiple isolation tubes extend along a first direction, the first direction is orthogonal to the vertical direction, and the multiple isolation tubes are spaced apart in a second direction, the second direction is orthogonal to the first direction and the vertical direction. The flow channel is formed between adjacent isolation tubes, and the inner cavity of the isolation tube forms the interlayer space. The isolation tube is provided with a connecting port for allowing the regenerated rich gas to enter the interlayer space.

[0037] The present invention arranges multiple isolation tubes at intervals, so that the inner cavity of a single isolation tube can form a relatively independent interlayer space. The interlayer space is stable and more consistent, further improving the suction process and facilitating the connection between the isolation tube and the suction port.

[0038] In some embodiments, a confluence cavity is provided on the side wall of the tower, and the confluence cavity is communicated with the inner cavity of the isolation tube and the suction port; and / or

[0039] The communication port is provided on the wall of the isolation tube and adjacent to the lower end surface of the isolation tube; and / or

[0040] The isolation tube is a mesh tube, the mesh holes on the isolation tube serve as the communication port, the aperture of the mesh holes adjacent to the upper end surface of the isolation tube is smaller than the particle size of the adsorbent, so as to prevent the adsorbent from entering the isolation tube through the mesh holes in the upper portion of the isolation tube, and the aperture of the mesh holes adjacent to the lower end surface of the isolation tube is larger than the particle size of the adsorbent, so as to allow the adsorbent entering the inner cavity of the isolation tube to flow out through the mesh holes in the lower portion of the isolation tube; and / or

[0041] The plurality of isolation tubes are arranged in parallel, and the distance between adjacent isolation tubes is 40 mm to 160 mm; and / or

[0042] The dimension of the isolation tube in the second direction is 200 mm to 450 mm.

[0043] In the present disclosure, since the interlayer spaces under each partition are relatively independent, a confluence cavity is set on the side wall of the tower. The confluence cavity can gather the airflow in each interlayer space to the suction port, which facilitates the suction of regenerated rich gas and improves the suction effect.

[0044] In the present disclosure, by arranging the communication port on the tube wall close to the lower end surface of the isolation tube, the adsorbent can be prevented from entering the interlayer space, and the regenerated rich gas can enter the confluence cavity through the communication port.

[0045] In the present disclosure, the isolation tube is set as a mesh tube so that the connecting ports are formed and distributed on the tube wall of the isolation tube, thereby improving the suction effect of the regenerated rich gas. Furthermore, by limiting the pore size of the connecting ports in different areas, the adsorbent can be prevented from entering the interlayer space.

[0046] In the present disclosure, the spacing between adjacent isolation tubes can ensure that the adsorbent flows smoothly downward from the flow channel, and can avoid the adsorbent pile from being too large and too thick, resulting in incomplete and insufficient suction of the adsorbent in the middle of the adsorbent pile.

[0047] In the present disclosure, by setting the size of the isolation tube in the second direction, that is, the width size of the isolation tube, inconsistent adsorbent flow rates in different areas above the isolation component can be avoided, thereby ensuring the normal circulation of the adsorbent. The size of the interlayer space can also be matched with the size of the adsorbent pile to avoid uneven suction.

[0048] In some embodiments, the number of the barrier components is at least two, and the at least two barrier components are vertically spaced apart.

[0049] In the present disclosure, multiple partition components are provided, which can pump the adsorbent multiple times, thereby improving the suction effect. Each time the adsorbent passes through the partition component, it can be mixed once, thereby balancing the adsorbent and improving the desorption effect and suction effect of the regenerated rich gas.

[0050] In some embodiments, the adsorbent regeneration tower with an interlayer space further comprises an inlet valve group and an outlet valve group, wherein the inlet valve group is provided at the feed inlet at the top of the tower, and the inlet valve group comprises a first rotary valve and a second rotary valve connected in series, and the outlet valve group is provided at the discharge port at the bottom of the tower, and the outlet valve group comprises a third rotary valve and a fourth rotary valve connected in series; and / or

[0051] A feed cavity and a discharge cavity are respectively provided at both ends of the tower, and the feed cavity and the discharge cavity are connected to an air supply assembly to inflate the feed cavity and the discharge cavity respectively, and keep the feed cavity and the discharge cavity at a positive pressure; and / or

[0052] The cavity of the tower also has a preheating chamber and a cooling chamber. The preheating chamber is arranged on the upper side of the heating chamber to preheat the adsorption-saturated adsorbent entering the heating chamber, and the cooling chamber is arranged on the lower side of the degassing chamber to cool the adsorbent after regeneration and desorption.

[0053] In the present disclosure, the inlet valve group and the outlet valve group can control the feed port and the discharge port to prevent the regenerated rich gas from overflowing from the feed port and the discharge port.

[0054] In the present disclosure, the feed cavity and the discharge cavity can form positive pressure to prevent the regeneration rich gas from diffusing toward the two ends of the tower, thereby allowing the regeneration rich gas to converge toward the degassing cavity to improve the suction effect of the regeneration rich gas.

[0055] The preheating chamber of the present invention can preheat the adsorbent to reduce the load of the heating chamber, and the cooling chamber can cool the adsorbent after regeneration and desorption, so as to facilitate the adsorption of the adsorbent to the adsorption tower for adsorption and purification of low-temperature flue gas below room temperature.

[0056] The low-temperature adsorption regeneration system disclosed herein comprises:

[0057] An adsorption tower having a flue gas inlet and a flue gas outlet, wherein flue gas enters the adsorption tower from the flue gas inlet and contacts and is adsorbed by an adsorbent in the adsorption tower, and the adsorbed and purified flue gas is discharged from the flue gas outlet;

[0058] A regeneration tower, wherein the regeneration tower is the above-mentioned adsorbent regeneration tower with an interlayer space, and the regeneration tower is connected to the adsorption tower, and is used to regenerate the adsorbent saturated with adsorption discharged from the adsorption tower and return the regenerated adsorbent to the adsorption tower;

[0059] and a cooling tower connected to the adsorption tower for cooling the flue gas to below room temperature and then transporting the flue gas to the flue gas inlet of the adsorption tower.

[0060] The low-temperature adsorption regeneration system disclosed herein has good separation effect between the regenerated rich gas and the adsorbent, and the regenerated rich gas is evenly pumped with good suction effect, thereby improving the regeneration effect of the adsorbent.

[0061] The low-temperature adsorption regeneration system disclosed in the present invention can also cool the high-temperature flue gas to below room temperature, so that the adsorbent in the adsorption tower contacts the flue gas in a low-temperature environment below room temperature. Compared with the adsorption effect in a high-temperature environment, the adsorption effect below room temperature can be increased by dozens or even hundreds of times, thereby improving the purification effect of the flue gas and achieving near-zero emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] FIG1 is a schematic structural diagram of an adsorbent regeneration tower with an interlayer space according to an embodiment of the present disclosure.

[0063] FIG2 is a schematic structural diagram of an interlayer component arranged in a degassing chamber according to an embodiment of the present disclosure.

[0064] FIG3 is a schematic top view of the structure of the barrier component according to an embodiment of the present disclosure.

[0065] FIG4 is a schematic structural diagram of an interlayer component arranged in a degassing chamber according to another embodiment of the present disclosure, specifically showing that the interlayer component is formed by arranging a plurality of blanking tubes at intervals.

[0066] FIG5 is a schematic structural diagram of an interlayer component arranged in a degassing chamber according to another embodiment of the present disclosure, specifically showing that the interlayer component is formed by arranging a plurality of arc-shaped partitions at intervals.

[0067] FIG6 is a schematic structural diagram of an interlayer component arranged in a degassing chamber according to another embodiment of the present disclosure, specifically a side view of the structure of FIG5 .

[0068] FIG7 is a schematic structural diagram of an interlayer component arranged in a degassing chamber according to an embodiment of the present disclosure, specifically a top view of the structure of FIG5 .

[0069] FIG8 is a schematic structural diagram of an interlayer component arranged in a degassing chamber according to an embodiment of the present disclosure, specifically showing that the interlayer component is formed by arranging a plurality of inverted V-shaped partitions at intervals.

[0070] FIG9 is a schematic structural diagram of an embodiment of the present disclosure in which an isolation layer component is arranged in a degassing chamber, specifically showing that the isolation layer component is formed by arranging a plurality of isolation tubes at intervals.

[0071] FIG10 is a schematic structural diagram of another embodiment of the present disclosure in which an interlayer component is arranged in a degassing cavity, specifically showing that two layers of interlayer components are arranged in the degassing cavity.

[0072] FIG11 is a schematic structural diagram of an adsorbent regeneration tower with an interlayer space according to another embodiment of the present disclosure.

[0073] FIG12 is a schematic structural diagram of an adsorbent unit according to an embodiment of the present disclosure.

[0074] Reference numerals: Tower 1, heating chamber 11, degassing chamber 12, suction port 13, feed port 14, discharge port 15, preheating chamber 16, cooling chamber 17, feed chamber 18, discharge chamber 19; interlayer component 2, interlayer space 21, flow channel 22, drop pipe 23, partition 24, isolation pipe 25, confluence chamber 26; inlet valve block 31, first rotary valve 311, second rotary valve 312, outlet valve block 32, third rotary valve 321, fourth rotary valve 322; adsorbent 41, breathable housing 42. DETAILED DESCRIPTION

[0075] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0076] As shown in FIG1 , an adsorbent regeneration tower having an interlayer space 21 according to an embodiment of the present disclosure includes a tower 1 having a heating chamber 11 and a degassing chamber 12 therein. The heating chamber 11 is used to heat the adsorbent saturated with adsorption to desorb regeneration-rich gas rich in pollutants, such as nitrogen oxides. The degassing chamber 12 is used to separate the regeneration-rich gas from the adsorbent. A suction port 13 communicating with the degassing chamber 12 is provided on the sidewall of the tower 1. The suction port 13 is connected to a suction device, such as a vacuum pump, for extracting the regeneration-rich gas.

[0077] An interlayer component 2 is provided in the degassing chamber 12 , and the adsorbent saturated with adsorption enters the degassing chamber 12 after being heated in the heating chamber 11 .

[0078] The interlayer component 2 has an interlayer space 21 and a flow channel 22. The interlayer space 21 and the flow channel 22 are arranged at intervals, and the interlayer space 21 is connected to the suction port 13. In the embodiment of the present disclosure, the interlayer space 21 can also be called a temporary storage space for regenerated rich gas and a regenerated rich gas escape space. By providing the interlayer space 21, it is convenient to separate the regenerated rich gas from the adsorbent, and to facilitate the suction and discharge of the regenerated rich gas. The flow channel 22 is used to allow the adsorbent to flow from the top of the interlayer space 21 to the bottom of the interlayer space 21. The regenerated rich gas desorbed from the adsorbent is sucked and discharged from the suction port 13 through the interlayer space 21.

[0079] In some embodiments, the adsorbent is fed from the top of the tower 1, flows through the heating chamber 11, and then enters the degassing chamber 12. The adsorbent is heated when flowing through the heating chamber 11 to desorb and regenerate. The adsorbent is regenerated and desorbs regenerated rich gas in the degassing chamber 12. It should be understood that the desorption and regeneration of the adsorbent is a continuous process. Therefore, the adsorbent desorption and regeneration process can be said to be carried out in the heating chamber 11 and the degassing chamber 12. Of course, the desorption and regeneration is mainly carried out in the heating chamber 11. Since the suction port 13 is connected to the interlayer space 21, through the continuous suction of the suction port 13, a negative pressure is formed in the interlayer space 21. The regenerated rich gas is gathered from the interlayer space 21 to the suction port 13, and the interlayer space 21 is distributed in the degassing chamber, so that the negative pressure environment in the degassing chamber is distributed in the degassing chamber, rather than just forming a negative pressure near the suction port 13.

[0080] The adsorbent regeneration tower with an interlayer space 21 in the embodiment of the present disclosure forms an interlayer space 21 in the degassing chamber 12 by arranging an interlayer component 2. During the adsorbent desorption and regeneration process, a more uniform negative pressure environment can be formed in the degassing chamber 12 when the regenerated rich gas is sucked. In other words, a more uniform negative pressure environment is formed in the interlayer space 21, so that the suction effect on the regenerated rich gas can be evenly distributed on the entire cross-section of the degassing chamber 12, thereby achieving uniform suction of the degassing chamber 12, that is, uniform suction of the adsorbent, improving the separation effect of the regenerated rich gas and the adsorbent, the regeneration effect of the adsorbent and the adsorption capacity of the adsorbent after regeneration, which is beneficial to the recycling of the adsorbent and reduces the cost. Instead of the problem of large suction force around the suction port and small suction force away from the suction port in the related art, the suction of the regenerated rich gas is uneven, resulting in the regenerated rich gas being discharged with the adsorbent, affecting the desorption and regeneration of the adsorbent, and resulting in different degrees of adsorbent desorption and regeneration, affecting the flue gas purification effect.

[0081] As shown in Figures 2 to 4, in some embodiments, the interlayer component 2 includes a plurality of drop tubes 23, which are arranged vertically. The tube lumens of the drop tubes 23 form a flow channel 22. At least a portion of adjacent drop tubes 23 are spaced apart to form an interlayer space 21. The upper ends of the plurality of drop tubes 23 are connected to each other to prevent the adsorbent from falling into the interlayer space 21 outside the drop tubes 23. "At least a portion of adjacent drop tubes 23 are spaced apart" should be understood as adjacent drop tubes can be spaced apart from each other along the entire length to form an interlayer space. For example, the drop tubes are circular tubes and the upper ends of the drop tubes can be connected by connecting members such as connecting plates. Alternatively, a portion of adjacent drop tubes can be spaced apart from each other to form an interlayer space. For example, the drop tubes are conical and the upper ends of the drop tubes can be directly connected or connected by connecting plates.

[0082] By arranging multiple drop pipes 23 at intervals, the adsorbent can flow downward through the multiple drop pipes 23, and an interlayer space 21 is formed between the drop pipes 23. Therefore, the structure of the interlayer component is simple, and the adsorbent accumulation layer formed on the lower side of the interlayer space 21 has a larger contact area with the interlayer space 21, which is beneficial to the separation of the regenerated rich gas from the adsorbent, and can improve the consistency of the interlayer space and the consistency of the flow channel, and can more conveniently achieve uniform and consistent suction.

[0083] As shown in Figures 2 and 4, the drop tube 23 can be a cylindrical tube or a conical tube. When the drop tube 23 is a conical tube, the cross-sectional area of ​​the drop tube 23 gradually decreases from top to bottom, or the upper part of the drop tube 23 is a conical tube and the lower part is a cylindrical tube.

[0084] When the drop pipes 23 are tapered tubes, or the upper portions of the drop pipes 23 are tapered tubes, the top ends of adjacent drop pipes 23 can be directly connected to each other when the drop pipes 23 are arranged. Setting the drop pipes 23 as tapered tubes makes it easier to collect the adsorbent above the barrier member 2 into the drop pipes 23. Furthermore, while ensuring that the barrier space 21 has the same contact area with the adsorbent accumulation layer, the volume of the barrier space 21 can be reduced, improving the compactness of the regeneration tower. While maintaining the same suction force, a greater negative pressure can be generated within the barrier space 21, thereby further improving the suction effect.

[0085] As shown in Figure 4, when the drop tube 23 is a cylindrical tube, the top ends of the drop tube 23 can be connected to each other through a connecting plate, and multiple drop tubes 23 are located on the lower side of the connecting plate. The upper end of the drop tube 23 is connected to the top of the connecting plate so that the adsorbent accumulated above the connecting plate can flow through the drop tube 23 to the bottom of the partition component 2.

[0086] In some embodiments, a first through hole is provided on the tube wall of the drop tube 23, and the aperture of the first through hole is smaller than the particle size of the adsorbent. Alternatively, a second through hole is provided on the tube wall of the drop tube 23, and the axis of the second through hole is inclined relative to the axis of the drop tube 23, and the outer end of the second through hole is higher than the inner end of the second through hole.

[0087] When the first through hole is set, the regenerated rich gas can enter the interlayer space 21 through the first through hole, and prevent the adsorbent from entering the interlayer space 21 through the first through hole. When the second through hole is set, the axis of the second through hole is inclined relative to the axis of the drop tube 23, so that the end of the second through hole located on the outer wall of the drop tube 23 is higher than the end of the second through hole located on the inner wall of the drop tube 23, so that the adsorbent will not enter the interlayer space 21 in reverse from the second through hole.

[0088] In the embodiment of the present disclosure, by arranging a first through hole and / or a second through hole on the tube wall of the drop tube 23, the adsorbent can be sucked while flowing through the drop tube 23, thereby further improving the suction effect, and at the same time preventing the adsorbent from flowing out into the interlayer space through the first through hole or the second through hole.

[0089] In some embodiments, when setting a second through hole, in order to increase the cross-sectional area of ​​the second through hole, a fixing block can be set on the outer wall of the blanking tube 23, and the outer end of the second through hole can pass through the fixing block. The fixing block can increase the length of the second through hole, and correspondingly can make the height difference between the two ends of the second through hole larger, so that a second through hole with a larger aperture can be set.

[0090] In some embodiments, the vertical height of the drop tube 23 is 80 mm to 300 mm. For example, the vertical height of the drop tube 23 is 80 mm, 120 mm, 230 mm, or 300 mm. The vertical height of the drop tube 23 also determines the vertical height of the interlayer component 2. When the height of the drop tube 23 is less than 80 mm, the suction port 13 will be opposite to the adsorbent pile formed below the drop tube 23. During the suction process, the adsorbent pile will affect the flow of airflow and form wind resistance, resulting in poor airflow. When the height of the drop tube 23 is greater than 300 mm, the height space occupied by the interlayer component 2 in the degassing chamber 12 is too large, which will not only make the space of the interlayer space 21 formed too large, resulting in excessive differences in negative pressure in different areas of the interlayer space 21, affecting the suction effect, but also cause the residence time of the adsorbent in the degassing chamber 12 to be too short, making it impossible for the adsorbent to be fully regenerated and desorbed.

[0091] In some embodiments, the distance between adjacent drop tubes 23 is 200 mm-550 mm, for example, the distance between adjacent drop tubes 23 is 200 mm, 280 mm, 470 mm or 550 mm. Multiple drop tubes 23 can be arranged in a rectangular array. The distance between adjacent drop tubes 23 can not only determine the density of the adsorbent pile formed below the drop tube 23, but also determine the difference in the adsorbent dropping speed at different distances from the drop tube 23 above the drop tube 23.

[0092] When the distance between the drop tubes 23 is greater than 550 mm, the flow rate of the adsorbent near the upper end of the drop tube 23 will be significantly faster than the flow rate of the adsorbent farther away from the upper end of the drop tube 23, thereby causing uneven drop of the adsorbent in the heating chamber 11, affecting the heating of the adsorbent and causing incomplete regeneration and desorption of the adsorbent; when the distance between the drop tubes 23 is less than 200 mm, the density of the adsorbent pile below the drop tube 23 will be higher, resulting in a lower height of the adsorbent pile, affecting the contact area and suction effect between the adsorbent and the interlayer space 21.

[0093] In some embodiments, the inner diameter of the lower end of the drop pipe 23 is between 40 mm and 160 mm, for example, 40 mm, 80 mm, 135 mm, or 160 mm. The adsorbent pile flowing through the drop pipe 23 to the bottom of the barrier member 2 forms a frustum, with the top area of ​​the adsorbent pile being the same as the outlet area of ​​the lower end of the drop pipe 23. If the inner diameter of the lower end of the drop pipe 23 is less than 40 mm, the adsorbent discharge may be unsmooth, affecting the discharge of the adsorbent. If the inner diameter of the lower end of the drop pipe 23 is greater than 160 mm, the cross-sectional area of ​​the adsorbent pile is too large, making it difficult to effectively extract the regenerated rich gas located in the middle of the adsorbent pile.

[0094] In the embodiment of the present disclosure, by limiting the height of the drop tube 23, the distance between adjacent drop tubes 23 and the inner diameter of the lower end of the drop tube 23, the size of the interlayer space 21 and the size of the adsorbent pile formed on the lower side of the drop tube 23 can be determined. While ensuring that there is sufficient contact area between the interlayer space 21 and the adsorbent accumulation layer on the lower side of the interlayer space 21, the volume of the interlayer space 21 can be reduced, so that the volume of the adsorbent flowing in the degassing chamber 12 and the time that the adsorbent is in the degassing chamber 12 can meet the requirements of adsorbent regeneration and desorption. The interlayer space 21 with a moderate volume can stabilize the negative pressure environment formed and ensure the suction effect of the regenerated rich gas.

[0095] As shown in Figures 5 to 8, in some embodiments, the partition component 2 includes a plurality of partitions 24, which extend along a first direction, which is orthogonal to the vertical direction. The plurality of partitions 24 are spaced apart in a second direction, which is orthogonal to the first direction and the vertical direction. A flow channel 22 is formed between adjacent partitions 24, and in the longitudinal section of the tower 1, the partition 24 is bent to form a partition space 21 at the bottom of the partition 24.

[0096] That is to say, the partitions 24 are bent and can form an interlayer space 21 under each partition 24. The interlayer spaces 21 under the multiple partitions 24 are relatively independent, and the multiple interlayer spaces 21 are all connected to the suction port 13, so that the negative pressure environment of each interlayer space 21 is more consistent. Since the flow channel 22 between adjacent partitions 24 is a long strip of slots, and the adsorbent will form an adsorbent material pile with a certain stacking angle after flowing to the bottom of the partition 24, the interlayer space 21 and the adsorbent are staggered, so that there is a larger contact area between the interlayer space and the adsorbent, which is conducive to the regenerated rich gas escaping from the adsorbent into the interlayer space, increasing the suction area of ​​the adsorbent and improving the suction effect. The up and down direction in Figure 5 is vertical, the first direction is the direction orthogonal to the up and down direction and the front and back direction in Figure 5, that is, the left and right direction in Figures 6 and 7, and the second direction is the front and back direction in Figures 5, 7 and 8.

[0097] As shown in FIG. 5 and FIG. 8 , in some embodiments, in the longitudinal section of the tower 1 , the partition 24 is arc-shaped or inverted V-shaped.

[0098] In the disclosed embodiment, the partition 24 can be configured in an arc or inverted V shape, so that the partition 24 has a groove cavity, and the opening of the groove cavity of the partition 24 faces downward, so as to form a partition space 21 below the partition 24. As a result, the partition component structure is simple, the consistency of the partition space can be better ensured, and the uniformity of the suction and the suction effect can be further improved.

[0099] As shown in FIG. 6 and FIG. 7 , in some embodiments, a confluence cavity 26 is provided on the side wall of the tower 1 , and the confluence cavity 26 is in communication with the interlayer space 21 and the suction port 13 .

[0100] Specifically, since the interlayer spaces 21 below each partition 24 are relatively independent, a confluence cavity 26 is provided on the side wall of the tower 1. The confluence cavity 26 can converge the airflow in each interlayer space 21 to the suction port 13, facilitating, for example, the connection of the suction pipe and the suction of the regenerated rich gas.

[0101] In some embodiments, the plurality of partitions 24 are arranged in parallel, and the spacing between adjacent partitions 24 is 40 mm to 160 mm. For example, the spacing between adjacent partitions 24 is 40 mm, 65 mm, 140 mm, or 160 mm.

[0102] In the disclosed embodiment, by limiting the spacing between adjacent partitions 24, it is possible to ensure that the adsorbent flows smoothly downward along the flow channel 22, and to prevent the adsorbent pile from being too large or too thick, which would result in incomplete aspiration of the adsorbent in the middle of the adsorbent pile. When the spacing between adjacent partitions 24 is less than 40 mm, the adsorbent discharge will be unsmooth, affecting the discharge of the adsorbent. When the spacing between adjacent partitions 24 is greater than 160 mm, the cross-sectional area of ​​the adsorbent pile is too large, making it difficult to effectively aspirate the regenerated rich gas in the middle of the adsorbent pile.

[0103] In some embodiments, the dimension of the partition 24 in the second direction is 200 mm-450 mm. For example, the dimension of the partition 24 in the second direction is 200 mm, 268 mm, 370 mm, or 450 mm.

[0104] Since the adsorbent flows downward along the flow channel 22 and the adsorbent pile has a stacking angle after flowing to the bottom of the interlayer component 2, the width of the partition 24 not only affects the normal circulation of the adsorbent, but also affects the space between adjacent adsorbent piles. When the width of the partition 24 is less than 200mm, the partition 24 will be narrow, the distance between adjacent adsorbent piles will be small, and the V-shaped groove formed between adjacent adsorbent piles will be relatively small. When the width of the partition 24 is greater than 450mm, the distance between adjacent adsorbent piles will be large, and the V-shaped groove formed between adjacent adsorbent piles will be relatively large. A too small V-shaped groove will result in a small effective contact area and short contact time between the adsorbent and the interlayer space 21, making it difficult for the regenerated rich gas to effectively complete regeneration and desorption in a short time, affecting the suction of the regenerated rich gas. An overly large V-shaped groove will result in an excessively large volume of the interlayer space 21, an unstable negative pressure environment, and relatively large differences in negative pressure environments in different areas, resulting in incomplete suction of the regenerated rich gas.

[0105] As shown in Figure 9, in some embodiments, the isolation component 2 includes a plurality of isolation tubes 25, which extend along a first direction, which is orthogonal to the vertical direction. The plurality of isolation tubes 25 are spaced apart in a second direction, which is orthogonal to the first direction and the vertical direction. A flow channel 22 is formed between adjacent isolation tubes 25, and the inner cavity of the isolation tube 25 forms an isolation space 21. The isolation tube 25 is provided with a connecting port for allowing the regenerated rich gas to enter the isolation space 21.

[0106] In the embodiment of the present disclosure, multiple isolation tubes 25 are arranged at intervals, which can enable the inner cavity of a single isolation tube 25 to form a relatively independent interlayer space 21, and the consistency and stability of the interlayer space 21 can be better achieved, and it is also convenient for the connection between the isolation tube 25 and the suction port 13. The interlayer space 21 formed in the isolation tube 25 and the adsorbent pile formed after the adsorbent passes through the flow channel 22 can be attached to the outer wall of the isolation tube 25, wherein the first direction is the length direction of the isolation tube 25 in the horizontal direction, and the isolation tubes 25 are arranged at intervals along a direction orthogonal to the vertical and the first direction. Specifically, the vertical direction is the up and down direction in Figure 9, the first direction is the direction orthogonal to the front and back direction and the up and down direction in Figure 9, and the second direction is the front and back direction in Figure 9.

[0107] In some embodiments, a confluence cavity 26 is provided on the side wall of the tower 1. The confluence cavity 26 communicates with the inner cavity of the isolation tube 25 and the suction port 13. Because the interlayer spaces 21 formed in each isolation tube 25 are relatively independent, the confluence cavity 26 is provided on the side wall of the tower 1 in the disclosed embodiment. The confluence cavity 26 can converge the airflow within the interlayer spaces 21 formed in each isolation tube 25 to the suction port 13, thereby facilitating the extraction of the regenerated enriched gas.

[0108] In some embodiments, the communication port is provided on the wall of the isolation tube 25 and is adjacent to the lower end surface of the isolation tube 25 .

[0109] By setting the connecting port on the tube wall near the lower end face of the isolation tube 25, the adsorbent can be prevented from entering the interlayer space 21, and the regenerated rich gas can enter the confluence cavity 26 through the connecting port, wherein the lower end face of the isolation tube 25 is the wall surface of the isolation tube 25 at the lower part of the isolation tube 25 in the longitudinal section, and the upper end face of the isolation tube 25 is the wall surface of the isolation tube 25 at the upper part of the isolation tube 25 in the longitudinal section.

[0110] In some embodiments, the isolation tube 25 is a mesh tube, and the mesh holes on the isolation tube 25 are connecting ports. The aperture of the mesh holes adjacent to the upper end surface of the isolation tube 25 is smaller than the particle size of the adsorbent to prevent the adsorbent from entering the isolation tube 25 through the mesh holes in the upper part of the isolation tube 25. The aperture of the mesh holes adjacent to the lower end surface of the isolation tube 25 is larger than the particle size of the adsorbent to allow the adsorbent entering the inner cavity of the isolation tube 25 to flow out through the mesh holes in the lower part of the isolation tube 25.

[0111] Specifically, in the embodiment of the present disclosure, by setting the isolation tube 25 as a mesh tube, the connecting ports are distributed on the tube wall of the isolation tube 25, which is conducive to the separation of the regenerated rich gas and improves the suction effect of the regenerated rich gas. The regenerated rich gas desorbed by the adsorbent regeneration in the circumference of the isolation tube 25 can enter the inner cavity of the isolation tube 25 through the mesh. Furthermore, by limiting the aperture of the connecting ports in different areas, the adsorbent can be prevented from entering the interlayer space 21. Even if powder or tiny particles of adsorbent generated by wear enter the interlayer space 21, they will flow out of the interlayer space 21 through the mesh adjacent to the lower end face of the isolation tube 25.

[0112] In some embodiments, a plurality of isolation tubes 25 are arranged in parallel, and the distance between adjacent isolation tubes 25 is 40 mm-160 mm, for example, the distance between adjacent isolation tubes 25 is 40 mm, 56 mm, 111 mm, or 160 mm.

[0113] In the disclosed embodiment, by limiting the spacing between adjacent isolation tubes 25, it is possible to ensure smooth downward flow of the adsorbent from the flow channel 22 and to prevent the adsorbent pile from becoming too large and too thick, which could result in incomplete extraction of the adsorbent in the middle of the adsorbent pile. When the spacing between adjacent isolation tubes 25 is less than 40 mm, the adsorbent discharge will be unsmooth, affecting the discharge of the adsorbent. When the spacing between adjacent isolation tubes 25 is greater than 160 mm, the cross-sectional area of ​​the adsorbent pile will be too large, making it difficult to effectively extract the regenerated rich gas in the middle of the adsorbent pile.

[0114] In some embodiments, the dimension of the isolation tube 25 in the second direction is 200 mm-450 mm. For example, the dimension of the isolation tube 25 in the second direction is 200 mm, 261 mm, 365 mm or 450 mm. The second direction is the front-to-back direction in FIG. 9 .

[0115] It should be noted that the second direction is the width (or radial) direction of the isolation tube 25 in the horizontal direction. By limiting the size of the isolation tube 25 in the second direction, the inconsistent adsorbent flow rate in different areas above the isolation component can be avoided, the normal flow of the adsorbent can be guaranteed, and the size of the interlayer space 21 can be matched with the size of the adsorbent pile to avoid uneven suction. When the size of the isolation tube 25 in the second direction is less than 200 mm, the width of the isolation tube 25 will be narrow, the distance between adjacent adsorbent piles will be small, the effective contact area and contact time between the adsorbent and the interlayer space 21 will be small, and the regenerated rich gas will be difficult to effectively complete the regeneration desorption in a short time, affecting the suction of the regenerated rich gas. When the width of the isolation tube 25 in the second direction is greater than 450 mm, the distance between adjacent adsorbent piles will be large, which will cause the volume of the interlayer space 21 to be too large, the negative pressure environment to be unstable, and the difference in negative pressure environment in different areas will be relatively large, which will lead to incomplete suction of the regenerated rich gas.

[0116] In some embodiments, the isolation tube 25 has a circular or elliptical cross-section. When the cross-section of the isolation tube 25 is elliptical, on the longitudinal section of the tower 1 , the vertical height dimension of the isolation tube 25 needs to be smaller than the width dimension of the isolation tube 25 in the second direction.

[0117] As shown in FIG10 , in some embodiments, the number of barrier components 2 is at least two, and the at least two barrier components 2 are vertically spaced apart. The number of barrier components 2 can be two, three, or five. The number of barrier components 2 can be adaptively adjusted based on the size of the degassing chamber 12.

[0118] In the embodiment of the present disclosure, by setting up multiple partition components 2, the adsorbent can be sucked multiple times, thereby further improving the suction effect. Each time the adsorbent passes through the partition component 2, it can be mixed once, thereby balancing the adsorbent and improving the desorption effect and suction effect of the regenerated rich gas.

[0119] Optionally, as shown in Figure 10, two partition components 2 can be provided, and the structures of the two partition components 2 can adopt different structural forms in the above embodiments. For example, one of the partition components 2 adopts a structural form in which multiple isolation tubes 25 are arranged at intervals, and the other partition component 2 adopts a structural form in which multiple blanking tubes 23 are arranged at intervals.

[0120] As shown in Figure 11, in some embodiments, the adsorbent regeneration tower with an interlayer space also includes an inlet valve group 31 and an outlet valve group 32. The inlet valve group 31 is arranged at the feed port 14 at the top of the tower, and the inlet valve group 31 includes a first rotary valve 311 and a second rotary valve 312 connected in series. The outlet valve group 32 is arranged at the discharge port 15 at the bottom of the tower, and the outlet valve group 32 includes a third rotary valve 321 and a fourth rotary valve 322 connected in series.

[0121] Specifically, the first rotary valve 311 and the second rotary valve 312 can achieve double blocking of the feed port 14, and the third rotary valve 321 and the fourth rotary valve 322 can achieve double blocking of the discharge port 15, so that a relatively independent space is formed in the inlet valve group 31 and the outlet valve group 32, so that they will not be affected by environmental factors such as the air pressure of the external space, so as to prevent the regenerated rich gas from overflowing from the feed port 14 and the discharge port 15.

[0122] As shown in Figure 11, in some embodiments, a feed chamber 18 and a discharge chamber 19 are respectively provided at both ends of the tower, and the feed chamber 18 and the discharge chamber 19 are connected to the air supply assembly to inflate the feed chamber 18 and the discharge chamber 19 respectively, and keep the feed chamber 18 and the discharge chamber 19 at a positive pressure.

[0123] That is to say, protective gas is introduced into the feed chamber 18 and the discharge chamber 19 through the gas supply component. The protective gas can be an inert gas such as nitrogen and helium. The feed chamber 18 and the discharge chamber 19 of the embodiment of the present disclosure can form a positive pressure to prevent the regenerated rich gas from diffusing to the two ends of the tower, and can also make the regenerated rich gas converge to the degassing chamber 12 to improve the suction effect of the regenerated rich gas.

[0124] In some embodiments, air inlet pipes may be connected to the feed chamber 18 and the discharge chamber 19 to inflate the feed chamber 18 and the discharge chamber 19 respectively.

[0125] Alternatively, when an inlet valve group 31 and an outlet valve group 32 are provided, an air intake pipe can be provided between the two rotary valves in the inlet valve group 31 and the outlet valve group 32 to inflate the cavities of the inlet valve group 31 and the outlet valve group 32. When the feeding is stopped, the rotary valves close to the feed chamber 18 and the discharge chamber 19 can keep rotating, so that the same air pressure as that of the inlet valve group 31 and the outlet valve group 32 can be maintained in the feed chamber 18 and the discharge chamber 19.

[0126] Alternatively, air may be added to the feed chamber 18 , the discharge chamber 19 , the inlet valve group 31 and the outlet valve group 32 simultaneously.

[0127] As shown in Figure 11, in some embodiments, the cavity of the tower 1 also has a preheating chamber 16 and a cooling chamber 17. The preheating chamber 16 is arranged above the heating chamber 11 to preheat the adsorption-saturated adsorbent entering the heating chamber 11, and the cooling chamber 17 is arranged below the degassing chamber 12 to cool the adsorbent after regeneration and desorption.

[0128] Specifically, in the disclosed embodiment, the preheating chamber 16 is used to preheat the adsorbent to reduce the load on the heating chamber 11, and the cooling chamber 17 is capable of cooling the adsorbent after regeneration and desorption, so that the adsorbent can be transported to the adsorption tower for adsorption and purification of low-temperature flue gas below room temperature. The provision of the preheating chamber, heating chamber, and cold zone chamber allows the formation of multiple temperature zones within the tower 1, facilitating graded heat exchange of the adsorbent, ensuring that the adsorbent temperature changes step by step, and maintaining uniform temperature zones to enhance the regeneration and desorption effect.

[0129] The low-temperature adsorption regeneration system of the embodiment of the present disclosure includes an adsorption tower, a regeneration tower and a cooling tower. The adsorption tower has a flue gas inlet and a flue gas outlet. The flue gas enters the adsorption tower from the flue gas inlet and contacts and adsorbs the adsorbent in the adsorption tower. The flue gas purified by adsorption is discharged from the flue gas outlet. The regeneration tower is an adsorbent regeneration tower with an interlayer space according to any of the above embodiments. The regeneration tower is connected to the adsorption tower and is used to regenerate the adsorption-saturated adsorbent discharged from the adsorption tower and return the regenerated adsorbent to the adsorption tower. The cooling tower is connected to the adsorption tower and is used to cool the flue gas to below room temperature and then transport it to the flue gas inlet of the adsorption tower.

[0130] The low-temperature adsorption regeneration system of the disclosed embodiment has good separation effect of regenerated rich gas, uniform suction, and high suction effect, thereby uniformly regenerating the adsorbent and achieving good regeneration effect. In addition, the low-temperature adsorption regeneration system of the disclosed embodiment can also cool the high-temperature flue gas to below room temperature, so that the adsorbent in the adsorption tower contacts the flue gas in an environment below room temperature. Compared with the activity of the adsorbent in a high-temperature environment, the activity of the adsorbent below room temperature can be increased by tens or even hundreds of times, thereby further improving the flue gas purification efficiency and effect.

[0131] The low temperature in the embodiment of the present disclosure is below room temperature. Optionally, the low temperature is below zero degrees Celsius. Optionally, the low temperature is -20°C to -10°C.

[0132] Through research, the inventors discovered that lower flue gas temperatures are more beneficial for adsorption purification. However, excessively low flue gas temperatures complicate the cooling equipment and increase energy consumption. For example, insulation is required for the cooling equipment, adsorption tower, and pipelines, requiring high sealing requirements, which increases costs. Furthermore, excessively low temperatures can easily lead to condensation in the adsorption tower, causing the adsorbent to stick and clog, thus affecting adsorption. Therefore, cooling the flue gas to a temperature between -20°C and -10°C is beneficial.

[0133] As shown in FIG12 , the adsorbent 41 in the embodiment of the present disclosure can be a granular or powdered adsorbent, or an adsorbent body made of powdered or granular adsorbent, such as a sphere or cylinder formed by a powdered or granular adsorbent through a binder. Of course, a protective shell can be further formed on the outside of the adsorbent body, such as a breathable membrane covering the outside of the adsorbent body, to improve the strength of the adsorbent body. The adsorbent 41 can be filled in a breathable outer shell 42 to form an adsorbent unit. The breathable outer shell 42 has air holes, and the flue gas can enter the breathable outer shell 42 through the air holes. The flue gas can pass through the gaps between adjacent adsorbents 41 and / or the holes in the adsorbent itself, thereby reducing direct collisions, friction and wear between the adsorbents 41, and the generation of dust. The breathable outer shell can be in the shape of a rotating body such as a sphere or a cylinder.

[0134] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0135] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0136] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0137] In the present disclosure, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0138] In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0139] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present disclosure.

Claims

1. An adsorbent regeneration tower with an interlayer space, comprising: A tower, wherein a heating chamber and a degassing chamber are provided in the tower, and a suction port connected to the degassing chamber is provided on the side wall of the tower, and the adsorbent saturated with adsorption enters the degassing chamber after being heated by the heating chamber, so that the adsorbent is regenerated and desorbed to produce regenerated rich gas, and the regenerated rich gas is discharged through the suction port; and A barrier component is arranged in the degassing chamber, the barrier component has a barrier space and a flow channel, the barrier space is connected to the suction port, the barrier space and the flow channel are arranged at intervals, the adsorbent flows from the top of the barrier space to the bottom of the barrier space through the flow channel, and the regenerated rich gas desorbed by the adsorbent is discharged from the suction port through the barrier space.

2. An adsorbent regeneration tower with an interlayer space according to claim 1, wherein the interlayer component comprises a plurality of drop pipes, the drop pipes are arranged vertically, the tube cavities of the drop pipes form the flow channel, at least a portion of adjacent drop pipes are arranged at intervals to form the interlayer space, and the upper ends of a plurality of the drop pipes are connected to each other to prevent the adsorbent from falling into the interlayer space outside the drop pipes.

3. The adsorbent regeneration tower with an interlayer space according to claim 2, wherein a first through hole is provided on the wall of the drop pipe, and the aperture of the first through hole is smaller than the particle size of the adsorbent; and / or A second through hole is provided on the tube wall of the blanking tube, the axis of the second through hole is arranged obliquely relative to the axis of the blanking tube, and the outer end of the second through hole is higher than the inner end of the second through hole; and / or The drop tube is a tapered tube, and the cross-sectional area of ​​the drop tube gradually decreases from top to bottom; and / or The vertical height of the drop tube is 80 mm to 300 mm; and / or The distance between adjacent drop tubes is 200mm-550mm; and / or The inner diameter of the lower end of the drop tube is 40 mm-160 mm.

4. The adsorbent regeneration tower having an interlayer space according to any one of claims 1 to 3, wherein the interlayer component comprises: A plurality of partitions are provided, wherein the partitions extend along a first direction, wherein the first direction is orthogonal to the vertical direction; the plurality of partitions are spaced apart in a second direction, wherein the second direction is orthogonal to the first direction and the vertical direction; the flow channel is formed between adjacent partitions; and on the longitudinal section of the tower, the partitions are bent to form the partition space at the bottom of the partitions.

5. The adsorbent regeneration tower with an interlayer space according to claim 4, characterized in that: In the longitudinal section of the tower, the partition is arc-shaped or inverted V-shaped; and / or A confluence cavity is provided on the side wall of the tower, and the confluence cavity is communicated with the interlayer space and the suction port; and / or The plurality of partitions are arranged in parallel, and the spacing between adjacent partitions is 40 mm to 160 mm; and / or The dimension of the partition in the second direction is 200 mm-450 mm.

6. The adsorbent regeneration tower having an interlayer space according to any one of claims 1 to 5, wherein the interlayer component comprises: A plurality of isolation tubes are provided, wherein the isolation tubes extend along a first direction, wherein the first direction is orthogonal to the vertical direction; the plurality of isolation tubes are spaced apart in a second direction, wherein the second direction is orthogonal to the first direction and the vertical direction; the flow channel is formed between adjacent isolation tubes; the inner cavity of the isolation tubes forms the interlayer space; and the isolation tubes are provided with a connecting port for allowing the regenerated rich gas to enter the interlayer space.

7. The adsorbent regeneration tower with an interlayer space according to claim 6, wherein a confluence cavity is provided on the side wall of the tower cylinder, and the confluence cavity is connected with the inner cavity of the isolation tube and the suction port; and / or The communication port is arranged on the wall of the isolation tube and is adjacent to the lower end surface of the isolation tube; and / or The isolation tube is a mesh tube, the mesh holes on the isolation tube are the communication ports, the aperture of the mesh holes adjacent to the upper end surface of the isolation tube is smaller than the particle size of the adsorbent, so as to prevent the adsorbent from entering the isolation tube through the mesh holes in the upper part of the isolation tube, and the aperture of the mesh holes adjacent to the lower end surface of the isolation tube is larger than the particle size of the adsorbent, so as to allow the adsorbent entering the inner cavity of the isolation tube to flow out through the mesh holes in the lower part of the isolation tube; and / or The plurality of isolation tubes are arranged in parallel, and the distance between adjacent isolation tubes is 40 mm to 160 mm; and / or The dimension of the isolation tube in the second direction is 200 mm-450 mm.

8. The adsorbent regeneration tower having an interlayer space according to any one of claims 1 to 7, wherein the number of the interlayer components is at least two, and at least two of the interlayer components are arranged at intervals in the vertical direction.

9. The adsorbent regeneration tower with an interlayer space according to any one of claims 1 to 8, further comprising an inlet valve group and an outlet valve group, wherein the inlet valve group is arranged at the feed inlet at the top of the tower, the inlet valve group comprises a first rotary valve and a second rotary valve connected in series, the outlet valve group is arranged at the discharge port at the bottom of the tower, the outlet valve group comprises a third rotary valve and a fourth rotary valve connected in series; and / or A feed cavity and a discharge cavity are respectively provided at both ends of the tower, and the feed cavity and the discharge cavity are connected to an air supply assembly to inflate the feed cavity and the discharge cavity respectively, and keep the feed cavity and the discharge cavity at a positive pressure; and / or The cavity of the tower also has a preheating chamber and a cooling chamber. The preheating chamber is arranged on the upper side of the heating chamber to preheat the adsorbent saturated with adsorption entering the heating chamber, and the cooling chamber is arranged on the lower side of the degassing chamber to cool the adsorbent after regeneration and desorption.

10. A low temperature adsorption regeneration system comprising: An adsorption tower, wherein the adsorption tower has a flue gas inlet and a flue gas outlet, the flue gas enters the adsorption tower from the flue gas inlet and contacts and adsorbs the adsorbent in the adsorption tower, and the adsorbed and purified flue gas is discharged from the flue gas outlet; A regeneration tower, wherein the regeneration tower is an adsorbent regeneration tower with an interlayer space according to any one of claims 1 to 9, the regeneration tower is connected to the adsorption tower, and is used to regenerate the adsorbent saturated with adsorption discharged from the adsorption tower and return the regenerated adsorbent to the adsorption tower; and a cooling tower, wherein the cooling tower is connected to the adsorption tower and is used for cooling the flue gas to below room temperature and then transporting the flue gas to the flue gas inlet of the adsorption tower.

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