Adsorbent regeneration tower with interstage space and low temperature adsorption regeneration system

Abstract

The present application relates to flue gas adsorption purification technical field and disclose a kind of adsorbent regenerator with interlayer space and low-temperature adsorption regeneration system, the adsorbent regenerator with interlayer space, including tower barrel and interlayer component, heating cavity and degassing cavity are formed in tower barrel, the suction port that is communicated with degassing cavity is equipped on the lateral wall of tower barrel, adsorbent saturated after being heated by heating cavity enters degassing cavity to desorb out regenerative rich gas, and regenerative rich gas is discharged by suction port, interlayer component is placed in degassing cavity, interlayer component has interlayer space and flow channel, flow channel is used to supply adsorbent from the top of interlayer space to the bottom of interlayer space, interlayer space is communicated with suction port, to make regenerative rich gas be discharged by suction port after interlayer space.This application discloses the adsorbent regenerator with interlayer space, can form interlayer space in degassing cavity, make adsorbent in degassing cavity be uniformly sucked, to improve the suction effect in degassing cavity.

Description

Technical Field

[0001] This invention relates to the field of flue gas adsorption and purification technology, specifically to an adsorbent regeneration tower with a partitioned space and a low-temperature adsorption and regeneration system. Background Technology

[0002] Flue gas adsorption purification is a commonly used method for flue gas purification. It utilizes adsorbents in an adsorption tower to remove pollutant components from the flue gas. After the adsorbent becomes saturated and deactivated, it is regenerated to restore its activity and achieve recycling.

[0003] In related technologies, adsorbent regeneration typically involves heating the adsorbent within a regeneration tower to desorb pollutants and form a rich regeneration gas (rich in pollutants, such as nitrogen oxides). This rich regeneration gas is then extracted from the regeneration tower through a suction port. However, this technology suffers from poor efficiency in removing the rich regeneration gas from the regeneration tower, resulting in ineffective separation of the desorbed gas from the adsorbent. Therefore, improvements are needed. Summary of the Invention

[0004] This invention is based on the inventor's discoveries and understanding of the following facts and problems:

[0005] In related technologies, the adsorbent is heated and regenerated in a regeneration tower to desorb rich regeneration gas, which is then discharged from the extraction port of the regeneration tower. The inventors discovered that the rich regeneration gas desorbed from the adsorbent in areas far from the extraction port within the regeneration tower is difficult to effectively extract and separate from the adsorbent. This rich regeneration gas easily flows out of the regeneration tower with the regenerated adsorbent from the outlet, reducing the regeneration effect, affecting the adsorption capacity of the regenerated adsorbent, hindering its recycling, and increasing costs.

[0006] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes an adsorbent regeneration tower with a partitioned space, which enables uniform adsorption of the adsorbent, improving the adsorption and separation efficiency of the regenerated rich gas.

[0007] The present invention also proposes a low-temperature adsorption regeneration system.

[0008] The adsorbent regeneration tower with a partitioned space of the present invention comprises:

[0009] A tower, comprising a heating chamber and a degassing chamber, has a suction port on its side wall communicating with the degassing chamber. Saturated adsorbent is heated in the heating chamber and then enters the degassing chamber for regeneration and desorption to produce rich regeneration gas, which is discharged through the suction port.

[0010] A partition component is disposed within the degassing chamber. The partition component has a partition space and a flow channel. The partition space is connected to the suction port. The partition space and the flow channel are arranged at intervals. The adsorbent flows from above the partition space to below the partition space through the flow channel, and the regenerated rich gas desorbed by the adsorbent is discharged from the suction port through the partition space.

[0011] The adsorbent regeneration tower with partitioned space of the present invention forms a partitioned space in the degassing chamber by setting partitioned components. As the adsorbent flows downward along the flow channel, the regeneration rich gas desorbed by the adsorbent enters the partitioned space. Since the partitioned space is distributed at intervals relative to the flow channel in the horizontal cross-section of the tower, a more uniform negative pressure environment can be formed in the partitioned space and the degassing chamber when suction is performed through the suction port. Thus, the suction effect of the regeneration rich gas can be evenly distributed across the entire cross-section of the degassing chamber, achieving uniform suction of the degassing chamber, that is, uniform suction of the adsorbent. This improves the separation effect of the regeneration rich gas and the adsorbent, the regeneration effect of the adsorbent, and the adsorption capacity of the regenerated adsorbent, which is beneficial to the recycling of the adsorbent and reduces costs.

[0012] Optionally, the partition component includes a plurality of discharge tubes arranged vertically, the lumens of the discharge tubes forming the flow channel, at least a portion of adjacent discharge tubes being spaced apart to form the partition space, and the upper ends of the plurality of discharge tubes being connected to each other to prevent the adsorbent from falling into the partition space outside the discharge tubes.

[0013] This invention uses multiple feed pipes spaced apart, through which the adsorbent flows downwards, forming a partition space between the feed pipes. The upper ends of the feed pipes are connected to each other to prevent the adsorbent from entering the partition space from the upper end of the feed pipes. As a result, the partition component has a simple structure, and the adsorbent layer formed on the lower side of the partition space can have a larger contact area with the partition space, which is beneficial for the separation of regenerated rich gas from the adsorbent. It can also improve the consistency of the partition space and the flow channel, and make it easier to achieve uniform and consistent suction.

[0014] Optionally, the wall of the discharge pipe is provided with a first through hole, the diameter of which is smaller than the particle size of the adsorbent; and / or

[0015] The material discharge pipe has a second through hole on its wall, the axis of the second through hole being inclined relative to the axis of the material discharge pipe, and the outer end of the second through hole being higher than the inner end of the second through hole; and / or

[0016] The material discharge pipe is a tapered pipe, and the cross-sectional area of ​​the material discharge pipe gradually decreases from top to bottom; and / or

[0017] The vertical height of the discharge pipe is 80mm-300mm; and / or

[0018] The distance between adjacent feed tubes is 200mm-550mm; and / or

[0019] The inner diameter of the lower end of the discharge tube is 40mm-160mm.

[0020] The present invention improves the separation and suction effects of regenerated rich gas by setting a first through hole and / or a second through hole on the wall of the discharge pipe, so that the adsorbent can be drawn in when it flows through the discharge pipe, while preventing the adsorbent from flowing into the partition space through the first or second through hole.

[0021] By setting the discharge pipe as a conical pipe, the adsorbent located above the partition component can be easily collected into the discharge pipe. Moreover, while ensuring that the partition space and the adsorbent layer have the same contact area, the volume of the partition space can be reduced, improving the compactness of the regeneration tower. Under the same suction force, a larger negative pressure can be formed in the partition space, thereby further improving the suction effect.

[0022] This invention, by limiting the height of the discharge pipe, the distance between adjacent discharge pipes, and the inner diameter of the lower end of the discharge pipe, can determine the size of the partition space and the size of the adsorbent pile formed on the lower side of the discharge pipe. While ensuring sufficient contact area between the partition space and the adsorbent pile on the lower side of the partition space, it reduces the volume of the partition space. This allows the flow channel volume for adsorbent flow in the degassing chamber and the time the adsorbent spends in the degassing chamber to meet the requirements of adsorbent regeneration and desorption, thus forming a more reliable and stable negative pressure environment and ensuring the regeneration and enrichment of gas suction effect.

[0023] Optionally, the partition component includes:

[0024] Multiple partitions extend along a first direction orthogonal to the vertical. The multiple partitions are spaced apart in a second direction orthogonal to the first direction and the vertical direction. The flow channel is formed between adjacent partitions. In the longitudinal section of the tower, the partitions are bent to form the partition space at the bottom of the partitions.

[0025] This invention utilizes a curved partition design to create a layered space beneath each partition. These multiple partitioned spaces are relatively independent and all are connected to the suction port, resulting in a more consistent negative pressure environment across all spaces. Because the flow channels between adjacent partitions are elongated slots, and the adsorbent forms a layer with a certain angle of repose after flowing beneath the partitions, the staggered arrangement of the partitioned spaces and the layered material provides a larger contact area between the partitioned spaces and the adsorbent. This facilitates the escape of regenerated gas from the adsorbent into the partitioned spaces, increasing the suction area and improving the suction effect.

[0026] Optionally, in the longitudinal section of the tower, the partition is arc-shaped or inverted V-shaped; and / or

[0027] The tower cylinder has a manifold on its side wall, which communicates with the partition space and the suction port; and / or

[0028] Multiple partitions are arranged in parallel, with a spacing of 40mm-160mm between adjacent partitions; and / or

[0029] The dimensions of the partition in the second direction are 200mm-450mm.

[0030] This invention uses an arc-shaped or inverted V-shaped partition to form a cavity, with the opening of the cavity facing downwards, thus creating a partitioned space below the partition. Since the partitioned spaces below each partition are relatively independent, a confluence chamber is provided on the side wall of the tower to gather the airflow from each partitioned space to the suction port, facilitating the connection of components such as suction pipes and the suction of regenerated rich gas.

[0031] The spacing between adjacent baffles in this invention ensures that the adsorbent flows smoothly downwards from the channel, and also prevents the adsorbent pile from becoming too large and thick, which would result in incomplete adsorbent extraction in the middle of the adsorbent pile.

[0032] Because the adsorbent flows downwards along the flow channel and has an angle of repose after reaching the bottom of the partition, the width of the partition affects not only the normal flow of the adsorbent but also 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 them. Conversely, when the partition width is relatively wide, the distance between adjacent adsorbent piles is large, resulting in a relatively large V-groove. An excessively small V-groove can lead to a small effective contact area and short contact time between the adsorbent and the partition space, while an excessively large V-groove can result in an excessively large partition space, affecting the suction effect.

[0033] Optionally, the partition component includes:

[0034] Multiple isolation tubes extend along a first direction orthogonal to the vertical. The multiple isolation tubes are spaced apart along a second direction orthogonal to the first direction and the vertical. A flow channel is formed between adjacent isolation tubes. The inner cavity of the isolation tube forms the partition space. The isolation tube is provided with a communication port for allowing the regenerated rich gas to enter the partition space.

[0035] This invention, by setting multiple isolation tubes at intervals, enables the inner cavity of each isolation tube to form a relatively independent partition space. The partition space is stable and more consistent, which further improves the suction flow and facilitates the connection between the isolation tube and the suction port.

[0036] Optionally, a manifold is provided on the side wall of the tower, the manifold communicating with the inner cavity of the isolation pipe and the suction port; and / or

[0037] The communication port is located on the wall of the isolation pipe and adjacent to the lower end face of the isolation pipe; and / or

[0038] The isolation tube is a mesh tube, and the mesh openings on the isolation tube are the communication ports. The pore size of the mesh openings near the upper end face 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 openings in the upper part of the isolation tube. The pore size of the mesh openings near the lower end face 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 openings in the lower part of the isolation tube; and / or

[0039] Multiple isolation tubes are arranged in parallel, with a distance of 40mm-160mm between adjacent isolation tubes; and / or

[0040] The isolation tube has a dimension of 200mm-450mm in the second direction.

[0041] Since the partition spaces below each partition are relatively independent, a confluence chamber is set on the side wall of the tower. The confluence chamber can gather the airflow in each partition space to the suction port, which facilitates the suction of regenerated rich gas and improves the suction effect.

[0042] In this invention, by setting the connecting port on the pipe wall near the lower end face of the isolation pipe, the adsorbent can be prevented from entering the partition space, and the regenerated rich gas can enter the manifold through the connecting port.

[0043] In this invention, by setting the isolation tube as a mesh tube, the connection ports are formed and distributed on the tube wall of the isolation tube, thereby improving the suction effect of regenerated rich gas. Furthermore, by limiting the pore size of the connection ports in different areas, the adsorbent can be prevented from entering the interlayer space.

[0044] In this invention, the spacing between adjacent isolation tubes ensures that the adsorbent flows smoothly downwards from the flow channel, and also prevents the adsorbent pile from becoming too large and too thick, which would result in incomplete or insufficient adsorbent extraction in the middle of the adsorbent pile.

[0045] In this invention, by setting the size of the isolation tube in the second direction, that is, the width of the isolation tube, the inconsistent flow rate of the adsorbent in different areas above the isolation component can be avoided, ensuring the normal flow of the adsorbent. It can also make the size of the partition space match the size of the adsorbent pile, avoiding uneven suction.

[0046] Optionally, the number of the partition components is at least two, and the at least two partition components are arranged at intervals in the vertical direction.

[0047] In this invention, multiple partition components are provided, which can perform multiple suctions on the adsorbent, thereby improving the suction effect. Each time the adsorbent passes through the partition components, it can be mixed once, thereby balancing the adsorbent and improving the desorption and suction effects of the regenerated gas.

[0048] Optionally, the adsorbent regeneration tower with partitioned space further includes an inlet valve assembly and an outlet valve assembly. The inlet valve assembly is located at the feed inlet at the top of the tower and includes a first rotary valve and a second rotary valve connected in series. The outlet valve assembly is located at the discharge inlet at the bottom of the tower and includes a third rotary valve and a fourth rotary valve connected in series; and / or

[0049] The tower has a feed chamber and a discharge chamber at each end, respectively. The feed chamber and the discharge chamber are connected to an air supply assembly to fill the feed chamber and the discharge chamber with air, and to maintain a positive pressure in both the feed chamber and the discharge chamber; and / or

[0050] The tower body also has a preheating chamber and a cooling chamber. The preheating chamber is located above the heating chamber to preheat the adsorbent that has become saturated with adsorption and enters the heating chamber. The cooling chamber is located below the degassing chamber to cool the adsorbent after regeneration and desorption.

[0051] In this invention, the inlet valve assembly and the outlet valve assembly can control the feed inlet and the outlet to prevent the regenerated rich gas from overflowing from the feed inlet and the outlet.

[0052] In this invention, the feed chamber and the discharge chamber can form a positive pressure to prevent the regenerated rich gas from diffusing to both ends of the tower, thereby causing the regenerated rich gas to converge toward the degassing chamber, so as to improve the suction effect of the regenerated rich gas.

[0053] The preheating chamber of this invention can preheat the adsorbent to reduce the load on the heating chamber, and the cooling chamber can cool 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.

[0054] The low-temperature adsorption regeneration system disclosed in this invention includes:

[0055] An adsorption tower has a flue gas inlet and a flue gas outlet. Flue gas enters the adsorption tower from the flue gas inlet and comes into contact with the adsorbent in the adsorption tower for adsorption. The flue gas purified by adsorption is discharged from the flue gas outlet.

[0056] The regeneration tower is the adsorbent regeneration tower with a partitioned space mentioned above. The regeneration tower is connected to the adsorption tower and is used to regenerate the adsorbent that has been saturated with adsorption discharged from the adsorption tower and to send the regenerated adsorbent back into the adsorption tower.

[0057] A cooling tower, which is connected to the adsorption tower, is used to cool the flue gas to below room temperature before delivering it to the flue gas inlet of the adsorption tower.

[0058] The low-temperature adsorption regeneration system of the present invention has the advantages of good separation between regenerated rich gas and adsorbent, uniform extraction of regenerated rich gas, good extraction effect, and improved regeneration effect of adsorbent.

[0059] The low-temperature adsorption regeneration system of the present invention can also cool the high-temperature flue gas to below room temperature, so that the adsorbent in the adsorption tower can come into contact with 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 improved by tens or even hundreds of times, thus improving the purification effect of the flue gas and achieving near-zero emissions. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of the structure of an adsorbent regeneration tower with a partitioned space according to an embodiment of the present invention.

[0061] Figure 2 This is a schematic diagram of the structure of the partition component arranged in the degassing chamber according to an embodiment of the present invention.

[0062] Figure 3 This is a top view of the partition component according to an embodiment of the present invention.

[0063] Figure 4 This is a schematic diagram of the structure of the partition component arranged in the degassing chamber according to another embodiment of the present invention, specifically showing that the partition component is formed by multiple material drop pipes arranged at intervals.

[0064] Figure 5This is a schematic diagram of the structure of a partition component arranged in a degassing chamber according to another embodiment of the present invention, specifically showing that the partition component is formed by multiple arc-shaped partitions arranged at intervals.

[0065] Figure 6 This is a schematic diagram of the structure of a partition component arranged in the degassing chamber according to another embodiment of the present invention, specifically as follows: Figure 5 The side view structure.

[0066] Figure 7 This is a schematic diagram of the structure of the partition component arranged in the degassing chamber according to an embodiment of the present invention, specifically... Figure 5 The top-down view of the structure.

[0067] Figure 8 This is a schematic diagram of the structure of the partition component arranged in the degassing chamber according to an embodiment of the present invention. Specifically, it shows that the partition component is formed by multiple inverted V-shaped partitions arranged at intervals.

[0068] Figure 9 This is a schematic diagram of the structure of the partition component arranged in the degassing chamber according to an embodiment of the present invention, specifically showing that the partition component is formed by multiple isolation tubes arranged at intervals.

[0069] Figure 10 This is a schematic diagram of the structure of a partition component arranged in the degassing chamber according to another embodiment of the present invention, specifically showing two partition components arranged in the degassing chamber.

[0070] Figure 11 This is a schematic diagram of the structure of an adsorbent regeneration tower with a partitioned space according to another embodiment of the present invention.

[0071] Figure 12 This is a schematic diagram of the structure of the adsorbent unit in an embodiment of the present invention.

[0072] Figure label:

[0073] 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;

[0074] 2. Partition component 2, partition space 21, flow channel 22, material drop pipe 23, partition plate 24, isolation pipe 25, and manifold 26.

[0075] Inlet valve assembly 31, first rotary valve 311, second rotary valve 312, outlet valve assembly 32, third rotary valve 321, fourth rotary valve 322;

[0076] Adsorbent 41, breathable outer shell 42. Detailed Implementation

[0077] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0078] like Figure 1 As shown, the adsorbent regeneration tower with a partition space 21 according to an embodiment of the present invention includes a tower 1, which has a heating chamber 11 and a degassing chamber 12. The heating chamber 11 is used to heat the adsorbent that is saturated with adsorption so that the adsorbent desorbs 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 side wall of the tower 1. The suction port 13 is connected to a suction device such as a suction pump for sucking up the regeneration rich gas.

[0079] A partition component 2 is provided in the degassing chamber 12. The adsorbent that is saturated with adsorption enters the degassing chamber 12 after being heated by the heating chamber 11.

[0080] The partition component 2 has a partition space 21 and a flow channel 22, which are arranged at intervals. The partition space 21 is connected to the suction port 13. In this embodiment of the invention, the partition space 21 can also be called a temporary storage space for regenerated rich gas or an escape space for regenerated rich gas. By setting the partition 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 for the adsorbent to flow from the top to the bottom of the partition space 21. The regenerated rich gas desorbed from the adsorbent is suctioned and discharged from the suction port 13 through the partition space 21.

[0081] Specifically, the adsorbent is fed from the top of the tower 1, flows through the heating chamber 11, and then enters the degassing chamber 12. As the adsorbent flows through the heating chamber 11, it is heated for desorption and regeneration. In the degassing chamber 12, the adsorbent is regenerated and desorbs to produce regenerated rich gas. It is important to understand that the desorption and regeneration of the adsorbent is a continuous process. Therefore, the desorption and regeneration process can be said to take place within the heating chamber 11 and the degassing chamber 12, although the desorption and regeneration mainly occurs within the heating chamber 11. Since the suction port 13 is connected to the partition space 21, continuous suction from the suction port 13 creates a negative pressure within the partition space 21. The regenerated rich gas converges from the partition space 21 to the suction port 13. The partition space 21 is distributed throughout the degassing chamber, ensuring that the negative pressure environment within the degassing chamber is distributed throughout the entire chamber, rather than just near the suction port 13.

[0082] The adsorbent regeneration tower with partition space 21 in this embodiment of the invention forms partition space 21 in the degassing chamber 12 by setting partition 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 regeneration rich gas is drawn in. In other words, a more uniform negative pressure environment is formed in partition space 21, so the drawing effect of the regeneration rich gas can be evenly distributed on the entire cross-section of the degassing chamber 12, realizing uniform drawing of the degassing chamber 12, that is, uniform drawing of the adsorbent, improving the separation effect of the regeneration rich gas and the adsorbent, the regeneration effect of the adsorbent and the adsorption capacity of the regenerated adsorbent, which is conducive to the recycling of the adsorbent and reduces costs. Unlike the prior art, where the drawing force is large around the drawing port and small away from the drawing port, the drawing force of the regeneration rich gas is uneven, causing the regeneration rich gas to be discharged with the adsorbent, affecting the desorption and regeneration of the adsorbent, and causing different degrees of desorption and regeneration of the adsorbent, which affects the flue gas purification effect.

[0083] like Figures 2-4 As shown, in some embodiments, the partition component 2 includes a plurality of discharge tubes 23 arranged vertically, the cavities of the discharge tubes 23 forming flow channels 22, and at least a portion of adjacent discharge tubes 23 being spaced apart to form a partition space 21. The upper ends of the plurality of discharge tubes 23 are connected to each other to prevent adsorbent from falling into the partition space 21 outside the discharge tubes 23. "At least a portion of adjacent discharge tubes 23 being spaced apart" should be understood as adjacent discharge tubes being spaced apart from each other along their entire length to form a partition space. For example, the discharge tubes are circular tubes and their upper ends can be connected by connecting plates or other connecting components. Alternatively, a portion of adjacent discharge tubes can be spaced apart from each other to form a partition space. For example, the discharge tubes are conical, and their upper ends can be directly connected or connected by connecting plates.

[0084] By setting multiple discharge pipes 23 at intervals, the adsorbent can flow downward through the multiple discharge pipes 23, and a partition space 21 is formed between the discharge pipes 23. Thus, the partition component has a simple structure, and the adsorbent accumulation layer formed on the lower side of the partition space 21 has a larger contact area with the partition space 21, which is conducive to the separation of regenerated rich gas from the adsorbent. It can also improve the consistency of the partition space and the consistency of the flow channel, and can more easily achieve uniform and consistent suction.

[0085] like Figure 2 and Figure 4 As shown, the discharge tube 23 can be a cylindrical tube or a tapered tube. When the discharge tube 23 is a tapered tube, the cross-sectional area of ​​the discharge tube 23 gradually decreases from top to bottom. Alternatively, the upper part of the discharge tube 23 is a tapered tube and the lower part is a cylindrical tube.

[0086] When the discharge pipe 23 is a conical pipe, or the upper part of the discharge pipe 23 is a conical pipe, the tops of adjacent discharge pipes 23 can be directly connected to each other when arranging the discharge pipes 23. Setting the discharge pipe 23 as a conical pipe makes it easier for the adsorbent above the partition component 2 to collect in the discharge pipe 23. In addition, while ensuring that the partition space 21 and the adsorbent accumulation layer have the same contact area, the volume of the partition space 21 can be reduced, improving the compactness of the regeneration tower. Under the same suction force, a larger negative pressure can be formed in the partition space 21, thereby further improving the suction effect.

[0087] like Figure 4 As shown, when the discharge pipe 23 is a cylindrical pipe, the top end of the discharge pipe 23 can be connected to each other through the connecting plate. Multiple discharge pipes 23 are located on the lower side of the connecting plate. The upper port of the discharge pipe 23 is connected to the upper part of the connecting plate so that the adsorbent accumulated on the upper part of the connecting plate can flow through the discharge pipe 23 to the lower part of the partition component 2.

[0088] In some embodiments, the wall of the discharge pipe 23 is provided with a first through hole, the diameter of which is smaller than the particle size of the adsorbent. Alternatively, the wall of the discharge pipe 23 is provided with a second through hole, the axis of which is inclined relative to the axis of the discharge pipe 23, and the outer end of which is higher than the inner end.

[0089] When the first through hole is provided, the regenerated rich gas can enter the partition space 21 through the first through hole, and the adsorbent is prevented from entering the partition space 21 through the first through hole. When the second through hole is provided, the axis of the second through hole is inclined relative to the axis of the discharge pipe 23, and the end of the second through hole located on the outer wall of the discharge pipe 23 is higher than the end of the second through hole located on the inner wall of the discharge pipe 23. In this way, the adsorbent will not enter the partition space 21 from the second through hole in reverse.

[0090] In this embodiment of the invention, by providing a first through hole and / or a second through hole on the wall of the discharge pipe 23, the adsorbent can be drawn in as it flows through the discharge pipe 23, thereby improving the drawing effect. At the same time, it can prevent the adsorbent from flowing out into the partition space through the first or second through hole.

[0091] Optionally, when a second through hole is provided, in order to increase the cross-sectional area of ​​the second through hole, a fixing block can be provided on the outer wall of the discharge pipe 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, the height difference between the two ends of the second through hole can be greater, so that a second through hole with a larger diameter can be provided.

[0092] In some embodiments, the vertical height of the discharge pipe 23 is 80mm-300mm, for example, 80mm, 120mm, 230mm, or 300mm. The vertical height of the discharge pipe 23 also determines the vertical height of the partition component 2. When the height of the discharge pipe 23 is less than 80mm, the suction port 13 will be opposite to the adsorbent pile formed below the discharge pipe 23. During the suction process, the adsorbent pile will affect the airflow and create wind resistance, resulting in poor airflow. When the height of the discharge pipe 23 is greater than 300mm, the partition component 2 occupies too much vertical space in the degassing chamber 12. This will not only make the formed partition space 21 too large, resulting in excessive negative pressure differences in different areas of the partition space 21, affecting the suction effect, but also cause the adsorbent to have too short a residence time in the degassing chamber 12, preventing the adsorbent from being fully regenerated and desorbed.

[0093] In some embodiments, the distance between adjacent discharge pipes 23 is 200mm-550mm, for example, the distance between adjacent discharge pipes 23 is 200mm, 280mm, 470mm or 550mm. Multiple discharge pipes 23 can be arranged in a rectangular array. The distance between adjacent discharge pipes 23 can not only determine the density of the adsorbent pile formed below the discharge pipe 23, but also determine the difference in the discharge speed of the adsorbent at different distances from the discharge pipe 23 above the discharge pipe 23.

[0094] When the distance between the discharge pipes 23 is greater than 550mm, the adsorbent flow rate near the upper end of the discharge pipe 23 will be significantly faster than the adsorbent flow rate farther from the upper end of the discharge pipe 23. This results in uneven distribution of 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 discharge pipes 23 is less than 200mm, the adsorbent pile density below the discharge pipe 23 will be higher, resulting in a lower adsorbent pile height, which affects the contact area between the adsorbent and the partition space 21 and the suction effect.

[0095] In some embodiments, the inner diameter of the lower end of the discharge pipe 23 is 40mm-160mm, for example, 40mm, 80mm, 135mm, or 160mm. The adsorbent material flowing through the discharge pipe 23 to the spacer component 2 forms a frustum-shaped cone, and the area of ​​the top of the adsorbent material pile is the same as the outlet area of ​​the lower end of the discharge pipe 23. When the inner diameter of the lower end of the discharge pipe 23 is less than 40mm, the discharge of adsorbent will be uneven, affecting the discharge of adsorbent. When the inner diameter of the lower end of the discharge pipe 23 is greater than 160mm, the cross-sectional area of ​​the adsorbent material pile will be too large, making it difficult to effectively extract the regenerated rich gas located in the middle of the adsorbent material pile.

[0096] In this embodiment of the invention, by limiting the height of the discharge pipe 23, the distance between adjacent discharge pipes 23, and the inner diameter of the lower end of the discharge pipe 23, the size of the partition space 21 and the size of the adsorbent pile formed on the lower side of the discharge pipe 23 can be determined. While ensuring sufficient contact area between the partition space 21 and the adsorbent pile on the lower side of the partition space 21, the volume of the partition space 21 can be reduced, so that the volume of adsorbent flow in the degassing chamber 12 and the time the adsorbent is in the degassing chamber 12 can meet the requirements of adsorbent regeneration and desorption. The partition space 21 with a moderate volume can stabilize the negative pressure environment formed and ensure the suction effect of regeneration rich gas.

[0097] like Figures 5-8 As shown, in some embodiments, the partition component 2 includes a plurality of partitions 24 extending along a first direction orthogonal to the vertical, the plurality of partitions 24 being spaced apart in a second direction orthogonal to the first direction and the vertical, and a flow channel 22 being formed between adjacent partitions 24. In the longitudinal section of the tower 1, the partitions 24 are bent to form a partition space 21 at the bottom of the partitions 24.

[0098] In other words, the curved arrangement of the partitions 24 creates a partition space 21 beneath each partition 24. These partition spaces 21 are relatively independent and all are connected to the suction port 13, resulting in a more consistent negative pressure environment across all partition spaces 21. Since the flow channels 22 between adjacent partitions 24 are elongated slots, and the adsorbent forms a stockpile with a certain angle of repose after flowing beneath the partitions 24, the staggered arrangement of the partition spaces 21 and the adsorbent provides a larger contact area. This facilitates the escape of regenerated gas from the adsorbent into the partition space, increasing the suction area and improving the suction effect. Figure 5 The vertical direction is defined as the top and bottom, and the first direction is... Figure 5 The center is a direction that is orthogonal to both the vertical and horizontal directions, i.e. Figure 6 and Figure 7 The left and right directions, the second direction is Figure 5 , Figure 7 and Figure 8 The front and back directions in the middle.

[0099] like Figure 5 and Figure 8 As shown, in some embodiments, the baffle 24 is arc-shaped or inverted V-shaped in the longitudinal section of the tower 1.

[0100] In this embodiment of the invention, the partition 24 can be configured as an arc or an inverted V-shape, giving the partition 24 a groove with the opening facing downwards, so as to form a partition space 21 below the partition 24. Therefore, the partition component has a simple structure, the consistency of the partition space can be better guaranteed, and the uniformity and suction effect of the suction are further improved.

[0101] like Figure 6 and Figure 7 As shown, in some embodiments, a manifold 26 is provided on the side wall of the tower 1, and the manifold 26 is connected to the partition space 21 and the suction port 13.

[0102] Specifically, since the partition 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 gather the airflow in each partition space 21 to the suction port 13, which facilitates, for example, the connection of the suction pipe and the suction of regenerated rich gas.

[0103] In some embodiments, a plurality of partitions 24 are arranged in parallel, and the distance between adjacent partitions 24 is 40mm-160mm, for example, the distance between adjacent partitions 24 is 40mm, 65mm, 140mm or 160mm.

[0104] In this embodiment of the invention, by limiting the spacing between adjacent baffles 24, the adsorbent can be ensured to flow smoothly downwards along the flow channel 22, and the formation of an excessively large and thick adsorbent pile can be avoided, which would lead to incomplete adsorbent extraction in the middle of the adsorbent pile. When the spacing between adjacent baffles 24 is less than 40 mm, the discharge of adsorbent will be uneven, affecting the feeding of adsorbent. When the spacing between adjacent baffles 24 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.

[0105] In some embodiments, the partition 24 has a dimension of 200mm-450mm in the second direction, for example, the partition 24 has a dimension of 200mm, 268mm, 370mm or 450mm in the second direction.

[0106] Since the adsorbent flows downward along the flow channel 22 and has an angle of repose after reaching the bottom of the partition component 2, the width of the partition 24 affects not only the normal flow of the adsorbent but also the space between adjacent adsorbent piles. When the width of the partition 24 is less than 200 mm, the partition 24 is narrow, resulting in a small distance between adjacent adsorbent piles and a relatively small V-shaped groove formed between them. When the width of the partition 24 is greater than 450 mm, the distance between adjacent adsorbent piles is large, resulting in a relatively large V-shaped groove formed between them. An excessively small V-shaped groove leads to a small effective contact area and short contact time between the adsorbent and the partition space 21, making it difficult for the regenerated rich gas to complete regeneration and desorption effectively in a short time, thus affecting the extraction of the regenerated rich gas. An excessively large V-shaped groove leads to an excessively large volume of the partition space 21, resulting in an unstable negative pressure environment and relatively large differences in the negative pressure environment in different areas, which can lead to incomplete extraction of the regenerated rich gas.

[0107] like Figure 9 As shown, in some embodiments, the partition component 2 includes a plurality of partition tubes 25 extending along a first direction orthogonal to the vertical. The plurality of partition tubes 25 are spaced apart in a second direction orthogonal to the first direction and the vertical. A flow channel 22 is formed between adjacent partition tubes 25. The inner cavity of the partition tube 25 forms a partition space 21. The partition tube 25 is provided with a communication port for allowing regenerated rich gas to enter the partition space 21.

[0108] In this embodiment of the invention, multiple isolation tubes 25 are spaced apart, enabling each isolation tube 25 to form a relatively independent partition space 21 within its inner cavity. This improves the consistency and stability of the partition space 21 and facilitates the connection between the isolation tubes 25 and the suction port 13. Within the partition space 21 formed inside the isolation tube 25, the adsorbent stockpile formed after the adsorbent passes through the flow channel 22 can adhere to the outer wall of the isolation tube 25. The first direction is the horizontal length direction of the isolation tube 25, and the isolation tubes 25 are spaced apart along directions orthogonal to both the vertical and first directions. Specifically, the vertical direction is... Figure 9 The vertical direction in the middle, the first direction is Figure 9 The center direction is orthogonal to both the front-back and up-down directions, and the second direction is... Figure 9 The front and back directions in the middle.

[0109] In some embodiments, a manifold 26 is provided on the side wall of the tower 1, and the manifold 26 is connected to the inner cavity of the isolation tube 25 and the suction port 13. Since the partition spaces 21 below each partition 24 are relatively independent, the manifold 26 is provided on the side wall of the tower 1 in this embodiment of the invention. The manifold 26 can gather the airflow in the partition spaces 21 formed in each isolation tube 25 to the suction port 13, which facilitates the suction of regenerated rich gas.

[0110] In some embodiments, the communication port is located on the wall of the isolation pipe 25 and adjacent to the lower end face of the isolation pipe 25.

[0111] By setting the connecting port on the pipe wall near the lower end face of the isolation pipe 25, the adsorbent can be prevented from entering the partition space 21, and the regenerated rich gas can enter the manifold 26 through the connecting port. The lower end face of the isolation pipe 25 is the wall surface of the isolation pipe 25 located in the lower part of the isolation pipe 25 in the longitudinal section, and the upper end face of the isolation pipe 25 is the wall surface of the isolation pipe 25 located in the upper part of the isolation pipe 25 in the longitudinal section.

[0112] In some embodiments, the isolation tube 25 is a mesh tube, and the mesh on the isolation tube 25 is a communication port. The pore size of the mesh adjacent to the upper end face of the isolation tube 25 is smaller than the particle size of the adsorbent, so as to prevent the adsorbent from entering the isolation tube 25 through the mesh of the upper part of the isolation tube 25. The pore size of the mesh adjacent to the lower end face of the isolation tube 25 is larger than the particle size of the adsorbent, so that the adsorbent entering the inner cavity of the isolation tube 25 flows out through the mesh of the lower part of the isolation tube 25.

[0113] Specifically, in this embodiment of the invention, 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 removal of regenerated rich gas and improves the suction effect of regenerated rich gas. The regenerated rich gas desorbed by the adsorbent in the circumference of the isolation tube 25 can enter the inner cavity of the isolation tube 25 through the mesh. Furthermore, by restricting the aperture of the connecting ports in different areas, the adsorbent can be prevented from entering the partition space 21. Even if there is powder or small particles of adsorbent generated due to wear entering the partition space 21, they will flow out of the partition space 21 through the mesh near the lower end face of the isolation tube 25.

[0114] In some embodiments, a plurality of isolation tubes 25 are arranged in parallel, and the distance between adjacent isolation tubes 25 is 40mm-160mm, for example, the distance between adjacent isolation tubes 25 is 40mm, 56mm, 111mm or 160mm.

[0115] In this embodiment of the invention, by limiting the spacing between adjacent isolation tubes 25, the adsorbent can be ensured to flow smoothly downwards from the flow channel 22, and the formation of an excessively large and thick adsorbent pile can be avoided, which would lead to incomplete adsorbent extraction in the middle of the adsorbent pile. When the spacing between adjacent isolation tubes 25 is less than 40 mm, the discharge of adsorbent will be obstructed, affecting the adsorbent discharge. 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.

[0116] In some embodiments, the dimension of the isolation tube 25 in the second direction is 200mm-450mm. For example, the dimension of the isolation tube 25 in the second direction is 200mm, 261mm, 365mm, or 450mm. Figure 9 The front and back directions in the middle.

[0117] It should be noted that the second direction refers to 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, inconsistent adsorbent flow rates in different areas above the isolation component can be avoided, ensuring normal adsorbent flow. It also allows the size of the partition space 21 to match the size of the adsorbent pile, preventing uneven suction. When the size of the isolation tube 25 in the second direction is less than 200mm, the width of the isolation tube 25 will be narrow, the spacing between adjacent adsorbent piles will be small, the effective contact area between the adsorbent and the partition space 21 will be small, and the contact time will be short. This makes it difficult for the regeneration rich gas to be effectively regenerated and desorbed in a short time, affecting the suction of the regeneration rich gas. When the width of the isolation tube 25 in the second direction is greater than 450mm, the spacing between adjacent adsorbent piles will be large, resulting in an excessively large volume of the partition space 21, an unstable negative pressure environment, and relatively large differences in the negative pressure environment in different areas, leading to incomplete suction of the regeneration rich gas.

[0118] Optionally, the isolation tube 25 has a circular or elliptical cross-section. When the cross-section of the isolation tube 25 is elliptical, the vertical height of the isolation tube 25 in the longitudinal section of the tower 1 needs to be smaller than the width of the isolation tube 25 in the second direction.

[0119] like Figure 10 As shown, in some embodiments, the number of partition components 2 is at least two, and the at least two partition components 2 are arranged vertically at intervals. The number of partition components 2 can be two, three, or five. The number of partition components 2 can be adaptively adjusted according to the size and space of the degassing chamber 12.

[0120] In this embodiment of the invention, by setting multiple partition components 2, the adsorbent can be drawn multiple times, thereby further improving the drawing effect. Each time the adsorbent passes through the partition component 2, it can be mixed once, thereby balancing the adsorbent and improving the desorption and drawing effects of the regenerated gas.

[0121] Optionally, such as Figure 10 As shown, two partition components 2 can be provided. The structures of the two partition components 2 can adopt different structural forms in the above embodiments. For example, one partition component 2 adopts a structure in which multiple isolation pipes 25 are arranged at intervals, and the other partition component 2 adopts a structure in which multiple material discharge pipes 23 are arranged at intervals.

[0122] like Figure 11As shown, in some embodiments, the adsorbent regeneration tower with partition space further includes an inlet valve group 31 and an outlet valve group 32. The inlet valve group 31 is located at the feed inlet 14 at the top of the tower and includes a first rotary valve 311 and a second rotary valve 312 connected in series. The outlet valve group 32 is located at the discharge outlet 15 at the bottom of the tower and includes a third rotary valve 321 and a fourth rotary valve 322 connected in series.

[0123] Specifically, the first rotary valve 311 and the second rotary valve 312 can achieve double blocking of the feed inlet 14, and the third rotary valve 321 and the fourth rotary valve 322 can achieve double blocking of the discharge outlet 15, so that the inlet valve group 31 and the outlet valve group 32 form relatively independent spaces, so as not to be affected by environmental factors such as air pressure in the external space, so as to prevent the regenerated rich gas from overflowing from the feed inlet 14 and the discharge outlet 15.

[0124] like Figure 11 As shown, in some embodiments, the two ends of the tower are respectively provided with a feed chamber 18 and a discharge chamber 19. The feed chamber 18 and the discharge chamber 19 are connected to an air supply assembly to fill the feed chamber 18 and the discharge chamber 19 with air respectively, and to keep both the feed chamber 18 and the discharge chamber 19 under positive pressure.

[0125] In other words, 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 or helium. In this embodiment of the invention, the feed chamber 18 and the discharge chamber 19 can form a positive pressure to prevent the regenerated rich gas from diffusing to both ends of the tower. It can also make the regenerated rich gas phase degassing chamber 12 collect, so as to improve the suction effect of the regenerated rich gas.

[0126] Optionally, air inlet pipes can be connected to the feed chamber 18 and the discharge chamber 19 to inflate the feed chamber 18 and the discharge chamber 19 respectively.

[0127] Alternatively, when an inlet valve assembly 31 and an outlet valve assembly 32 are provided, an air inlet pipe can be provided between the two rotary valves in the inlet valve assembly 31 and the outlet valve assembly 32 to fill the cavities of the inlet valve assembly 31 and the outlet valve assembly 32 with air. When feeding stops, the rotary valves near the feed chamber 18 and the discharge chamber 19 can be kept rotating, so that the feed chamber 18 and the discharge chamber 19 can maintain the same air pressure as the inlet valve assembly 31 and the outlet valve assembly 32.

[0128] Alternatively, air can be simultaneously supplied to the feed chamber 18, the discharge chamber 19, the inlet valve group 31, and the outlet valve group 32.

[0129] like Figure 11As shown, in some embodiments, the cavity of the tower 1 also has a preheating cavity 16 and a cooling cavity 17. The preheating cavity 16 is located above the heating cavity 11 to preheat the adsorbent that has been adsorbed to saturation and enters the heating cavity 11. The cooling cavity 17 is located below the degassing cavity 12 to cool the adsorbent after regeneration and desorption.

[0130] Specifically, in this embodiment of the invention, the preheating chamber 16 is used to preheat the adsorbent to reduce the load on the heating chamber 11, and the cooling chamber 17 can cool the adsorbent after regeneration and desorption, so as to facilitate the delivery of the adsorbent to the adsorption tower for adsorption and purification of low-temperature flue gas below room temperature. The arrangement of the preheating chamber, heating chamber, and cooling chamber can form multiple temperature zones within the tower 1, so as to facilitate staged heat exchange of the adsorbent, ensure that the temperature of the adsorbent changes step by step, and make the temperature zone uniform, thereby improving the regeneration and desorption effect.

[0131] The low-temperature adsorption regeneration system of this invention includes an adsorption tower, a regeneration tower, and a cooling tower. The adsorption tower has a flue gas inlet and a flue gas outlet. Flue gas enters the adsorption tower from the flue gas inlet and comes into contact with the adsorbent inside the adsorption tower for adsorption. The flue gas purified by adsorption is discharged from the flue gas outlet. The regeneration tower is an adsorbent regeneration tower with a partition space as described in any of the above embodiments. The regeneration tower is connected to the adsorption tower and is used to regenerate the adsorbent that has been saturated by adsorption discharged from the adsorption tower and to send the regenerated adsorbent back into the adsorption tower. The cooling tower is connected to the adsorption tower and is used to cool the flue gas to below room temperature before conveying it to the flue gas inlet of the adsorption tower.

[0132] The low-temperature adsorption regeneration system of this invention features good regeneration and rich gas separation effect, uniform suction, and high suction efficiency, resulting in uniform adsorbent regeneration and good regeneration effect. Furthermore, this system can cool the high-temperature flue gas to below room temperature, allowing the adsorbent in the adsorption tower to contact the flue gas in a lower-temperature environment. Compared to the activity of the adsorbent at high temperatures, the activity of the adsorbent below room temperature can be increased by tens or even hundreds of times, thus further improving the purification efficiency and effect of the flue gas.

[0133] In the embodiments of the present invention, the low temperature is below room temperature, preferably below zero degrees Celsius, and more preferably -20°C to -10°C.

[0134] The inventors discovered through research that lower flue gas temperatures are more beneficial for adsorption and purification. However, excessively low flue gas temperatures lead to complex equipment structures for cooling the flue gas, increased energy consumption, and for example, the need for insulation layers in the cooling equipment, adsorption tower, and piping, as well as high sealing requirements, thus increasing costs. Furthermore, excessively low temperatures cause condensation to easily form inside the adsorption tower, leading to adsorbent adhesion and blockage, which affects adsorption. Therefore, cooling the flue gas to a temperature of -20℃ to -10℃ is advantageous.

[0135] like Figure 12 As shown, the adsorbent 41 in this embodiment of the invention can be a granular or powdered adsorbent, or an adsorbent body made of powder or granular adsorbent, such as a spherical or cylindrical body formed by binding powder or granular adsorbent with 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 adsorbent body, to improve the strength of the adsorbent body. The adsorbent 41 can be filled inside the breathable shell 42 to form an adsorbent unit. The breathable shell 42 has vent holes, through which flue gas can enter the breathable shell 42. The flue gas can pass through the gaps between adjacent adsorbents 41 and / or the pores of the adsorbent itself, thereby reducing direct collisions, friction and wear between adsorbents 41, and dust generation. The breathable shell can be in the shape of a sphere, cylinder, or other rotating body.

[0136] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0137] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0138] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0139] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0140] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0141] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. An adsorbent regeneration tower with a partitioned space, characterized in that, include: The tower has a heating chamber and a degassing chamber inside. The side wall of the tower is provided with a suction port that communicates with the degassing chamber. The adsorbent that is saturated with adsorption is heated by the heating chamber and then enters the degassing chamber so that the adsorbent can be regenerated and desorbed to produce regenerated rich gas. The regenerated rich gas is discharged through the suction port. and A partition component is disposed within the degassing chamber. The partition component has a partition space and a flow channel. The partition space is connected to the suction port. The partition space and the flow channel are arranged at intervals on the cross-section of the degassing chamber. The adsorbent flows from above the partition space to below the partition space through the flow channel. The regenerated rich gas desorbed by the adsorbent is discharged from the suction port through the partition space. The partition component includes a plurality of discharge tubes arranged vertically, the lumen of the discharge tubes forming the flow channel, at least a portion of adjacent discharge tubes being spaced apart to form the partition space, and the upper ends of the plurality of discharge tubes being connected to each other to prevent the adsorbent from falling into the partition space outside the discharge tubes. The multiple discharge tubes are arranged in a rectangular array so that the multiple partition spaces and the multiple flow channels are evenly spaced on the cross-section of the degassing chamber, so that a uniform negative pressure distribution can be formed on the entire cross-section of the degassing chamber during suction. The vertical height of the discharge tube is 80mm-300mm, the distance between adjacent discharge tubes is 200mm-550mm, and the inner diameter of the lower end of the discharge tube is 40mm-160mm.

2. The adsorbent regeneration tower with a partitioned space according to claim 1, characterized in that, The discharge pipe has a first through hole on its wall, the diameter of which is smaller than the particle size of the adsorbent; and / or The material discharge pipe has a second through hole on its wall, the axis of the second through hole being inclined relative to the axis of the material discharge pipe, and the outer end of the second through hole being higher than the inner end of the second through hole; and / or The material discharge tube is a tapered tube, and the cross-sectional area of ​​the material discharge tube gradually decreases from top to bottom.

3. The adsorbent regeneration tower with a partitioned space according to claim 1, characterized in that, The partition component includes: Multiple partitions extend along a first direction orthogonal to the vertical. The multiple partitions are spaced apart in a second direction orthogonal to the first direction and the vertical. The flow channel is formed between adjacent partitions. In the longitudinal section of the tower, the partitions are bent to form the partition space at the bottom of the partitions.

4. The adsorbent regeneration tower with a partitioned space according to claim 3, characterized in that, In the longitudinal section of the tower, the partition is arc-shaped or inverted V-shaped; and / or The tower cylinder has a manifold on its side wall, which communicates with the partition space and the suction port; and / or Multiple partitions are arranged in parallel, with a spacing of 40mm-160mm between adjacent partitions; and / or The dimensions of the partition in the second direction are 200mm-450mm.

5. The adsorbent regeneration tower with a partitioned space according to claim 1, characterized in that, The partition component includes: Multiple isolation tubes extend along a first direction orthogonal to the vertical. The multiple isolation tubes are spaced apart along a second direction orthogonal to the first direction and the vertical. A flow channel is formed between adjacent isolation tubes. The inner cavity of the isolation tube forms the partition space. The isolation tube is provided with a communication port for allowing the regenerated rich gas to enter the partition space.

6. The adsorbent regeneration tower with a partitioned space according to claim 5, characterized in that, The tower has a manifold on its side wall, which communicates with the inner cavity of the isolation pipe and the suction port; and / or The communication port is located on the wall of the isolation pipe and adjacent to the lower end face of the isolation pipe; and / or The isolation tube is a mesh tube, and the mesh on the isolation tube is the communication port. The pore size of the mesh near the upper end face 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 in the upper part of the isolation tube. The pore size of the mesh near the lower end face of the isolation tube is larger than the particle size of the adsorbent, so that the adsorbent entering the inner cavity of the isolation tube flows out through the mesh in the lower part of the isolation tube. and / or Multiple isolation tubes are arranged in parallel, with a distance of 40mm-160mm between adjacent isolation tubes; and / or The isolation tube has a dimension of 200mm-450mm in the second direction.

7. The adsorbent regeneration tower with a partitioned space according to any one of claims 1-6, characterized in that, The number of the partition components is at least two, and the at least two partition components are arranged at intervals in the vertical direction.

8. The adsorbent regeneration tower with a partitioned space according to claim 1, characterized in that, It also includes an inlet valve assembly and an outlet valve assembly. The inlet valve assembly is located at the feed inlet at the top of the tower and includes a first rotary valve and a second rotary valve connected in series. The outlet valve assembly is located at the discharge inlet at the bottom of the tower and includes a third rotary valve and a fourth rotary valve connected in series; and / or The tower has a feed chamber and a discharge chamber at each end, respectively. The feed chamber and the discharge chamber are connected to an air supply assembly to fill the feed chamber and the discharge chamber with air, and to maintain a positive pressure in both the feed chamber and the discharge chamber; and / or The tower body also has a preheating chamber and a cooling chamber. The preheating chamber is located above the heating chamber to preheat the adsorbent that has become saturated with adsorption and enters the heating chamber. The cooling chamber is located below the degassing chamber to cool the adsorbent after regeneration and desorption.

9. A low-temperature adsorption regeneration system, characterized in that, include: An adsorption tower has a flue gas inlet and a flue gas outlet. Flue gas enters the adsorption tower from the flue gas inlet and comes into contact with the adsorbent in the adsorption tower for adsorption. The flue gas purified by adsorption is discharged from the flue gas outlet. A regeneration tower, wherein the regeneration tower is an adsorbent regeneration tower with a partition space as described in any one of claims 1-8, the regeneration tower being connected to the adsorption tower for regenerating the adsorbent that has been saturated with adsorption discharged from the adsorption tower and sending the regenerated adsorbent back into the adsorption tower; A cooling tower, which is connected to the adsorption tower, is used to cool the flue gas to below room temperature before delivering it to the flue gas inlet of the adsorption tower.

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