A coating device for blood perfusion adsorbent

Abstract

The present application relates to the field of biomass energy industry equipment, and in particular to a coating device for blood perfusion adsorbent, which includes a shell, a coating mechanism and a drying mechanism arranged in the shell, wherein a coating cavity is formed in the shell, and a coating nozzle for driving adsorbent particles to at least suspend is arranged at the bottom of the coating cavity; the coating mechanism includes a coating tube, a plurality of humidifying nozzles arranged circumferentially on the inner wall of the coating tube, and a conveying assembly for conveying adsorbent particles into the coating tube, wherein the coating tube is vertically fixedly connected to the bottom of the coating cavity, the humidifying nozzle is used to convey atomized coating liquid toward the center of the coating tube, and the conveying assembly is arranged on the lower side of the humidifying nozzle and drives the adsorbent particles from the coating tube into the coating cavity; the drying mechanism is arranged in the shell and used to dry the adsorbent particles output from the coating cavity. The present application can reduce the occurrence of adhesion while forming a uniform and dense coating on the surface of the adsorbent particles.

Description

Technical Field

[0001] The present application relates to the field of biomass energy industry equipment, and in particular to a coating device for a blood perfusion adsorbent. Background Art

[0002] Hemoperfusion (HP) is a blood purification technology that introduces the patient's blood into a perfusion device filled with solid adsorbents to remove exogenous or endogenous toxins, drugs or metabolic wastes in the blood that cannot be removed by dialysis through adsorption. It is mainly used to rescue drug and poison poisoning, and can also be used in combination with hemodialysis to remove macromolecular toxins in patients with chronic renal failure who are undergoing maintenance dialysis.

[0003] Blood adsorbents are mainly made of activated carbon and resin, but if the adsorbent is directly in contact with blood during blood perfusion, tiny particles will fall off, causing coagulation and embolism. Therefore, blood adsorbents are also coated with coating fluid to solve clinical application problems such as poor blood compatibility and tiny particle shedding. Therefore, the coating quality of the adsorbent is closely related to the safety and stability of blood adsorption during the clinical application of the adsorbent.

[0004] In the prior art, a fluidized bed is often used for coating of adsorbents, which mainly uses atomized coating liquid and airflow to fully mix with adsorbent particles, and makes the coating liquid adhere to the adsorbent particles to complete the coating treatment. However, since the coating formation process mainly relies on the solution to maintain the liquid state, and during the atomization process, the atomized solvent contacts the adsorbent particles, so that the coating liquid as a solute adheres to the surface of the adsorbent particles, and then the adsorbent solvent evaporates, the coating liquid as a solute will dry and solidify on the surface of the adsorbent particles to form a coating.

[0005] In the process of coating liquid adhering to the surface of adsorbent particles to form a coating, if there is too much coating liquid on the surface of adsorbent particles, it is easy to cause adjacent adsorbent particles to adhere to each other and agglomerate; if there is too little coating liquid, even if it is fully mixed, the coating on the surface of the adsorbent particles is formed by the superposition and drying of multiple coating droplets, which will cause the coating to fall off easily or even partially without coating. Therefore, how to form a uniform and dense coating on the surface of adsorbent particles while reducing the occurrence of adhesion is a problem that needs to be solved urgently. Summary of the invention

[0006] In order to form a uniform and dense coating on the surface of adsorbent particles while reducing adhesion, the present application provides a coating device for a blood perfusion adsorbent.

[0007] The present application provides a blood perfusion adsorbent coating device, which adopts the following technical solution:

[0008] A coating device for a blood perfusion adsorbent comprises a shell, a coating mechanism and a drying mechanism arranged on the shell, wherein a coating cavity is formed in the shell, and a coating nozzle for driving adsorbent particles to at least suspend is arranged at the bottom of the coating cavity; the coating mechanism comprises a coating tube, a plurality of humidifying nozzles arranged circumferentially on the inner wall of the coating tube, and a conveying component for conveying adsorbent particles into the coating tube, wherein the coating tube is vertically fixedly connected to the bottom of the coating cavity, the humidifying nozzle is used to convey atomized coating liquid toward the center of the coating tube, and the conveying component is arranged on the lower side of the humidifying nozzle and drives adsorbent particles from the coating tube into the coating cavity; and a drying mechanism is arranged on the shell and used to dry the adsorbent particles output from the coating cavity.

[0009] By adopting the above technical scheme, when the adsorbent is coated, it is only necessary to transport the adsorbent particles to the coating tube through the conveying component. At this time, the humidifying nozzle will spray out atomized coating liquid to maintain a relatively high humidity in the limited space of the coating tube to fully and evenly carry out the coating treatment. Thereafter, the adsorbent particles are output from the coating tube to the coating cavity. Due to the sudden increase in space, the gas will disperse toward the surrounding side of the coating cavity and carry the adsorbent particles to disperse, so as to reduce the possibility of adhesion of the adsorbent particles due to excessive humidity. In addition, the adsorbent particles entering the coating cavity will not only be driven to suspend due to the action of the coating nozzle, but will also be further dispersed due to the centrifugal force of the rotation and the impact, so as to achieve uniform coating of the new car while reducing the occurrence of adhesion. Finally, the coating can be dried by the drying mechanism.

[0010] Optionally, the spray output direction of the humidifying nozzle is inclined upward and intersects with the cross section of the coating tube.

[0011] By adopting the above technical solution, the output atomized gas can be transported upward in a spiral shape, so that the adsorbent particles can float upward in a spiral shape in the coating tube to fully contact with the atomized coating liquid. At the same time, after leaving the coating tube, they can be dispersed in time due to centrifugal force, further reducing the possibility of adhesion.

[0012] Optionally, at least part of the coating nozzles have input ends provided with a two-way valve with two input ends, and the two input ends of the two-way valve are used to input drying gas and atomizing gas mixed with atomizing solvent, respectively.

[0013] By adopting the above technical scheme, the coating nozzle can output dry gas or gas with a certain content of atomized solvent, so that the gas output by the coating nozzle can not only maintain the relative humidity in the coating cavity, but also reduce the possibility of excessive dryness or high humidity affecting the coating quality. At the same time, during the coating process, the gas with atomized coating liquid is first input to further promote the uniformity of the coating, and then the dry gas is input. At this time, the solvent of the coating liquid on the surface of the adsorbent particles will be initially dried to reduce the possibility of defects such as cracking of the coating due to rapid drying.

[0014] Optionally, an exhaust port is provided at the top of the coating cavity, and an outlet connected to the outside is provided at the bottom of the coating cavity, the shell is provided with a control component for controlling the opening and closing of the outlet, and the drying mechanism is connected to the outlet through the control component.

[0015] By adopting the above technical solution, when coating is carried out in the coating cavity, under the action of the coating nozzle, the gas containing the atomized coating liquid will be discharged directly from the exhaust port, so that the gas containing the coating liquid can be discharged after coating, reducing the impact on the drying of the adsorbent particles; and after the coating is completed, it is only necessary to connect the discharge port to the drying mechanism through the control component to carry out the drying process.

[0016] Optionally, the control component includes a control panel movable relative to the shell toward or away from the discharge port and a seal arranged on the shell, the shell is provided with a driving member for driving the control panel to block or disengage from the discharge port, the seal is used to seal the gap between the control panel and the shell and form a gap connected to the coating cavity, the control panel is provided with a feed port for conveying the adsorbent to the drying mechanism, and the feed port and the discharge port are staggered.

[0017] By adopting the above technical solution, the control board is connected to the shell through the seal, and the adsorbent particles are prevented from being discharged to the outside of the shell and leaking. When drying is required, the driving member only needs to separate the control board from the discharge port so that the coating cavity is connected to the feed port. Moreover, since the discharge port is at the bottom of the coating cavity, the discharge of gas will prompt the adsorbent particles to be quickly transported to the drying mechanism through the discharge port for drying.

[0018] Optionally, the control panel includes a plate body arranged to move toward or away from the discharge port relative to the shell and a protrusion formed on the plate body, the seal is used to seal the gap between the plate body and the shell and follow the movement of the plate body, the protrusion is adapted to the discharge port, and the drive is used to control the movement of the plate body toward or away from the shell.

[0019] By adopting the above technical solution, when the driving member controls the plate to move toward the shell, the discharge port can be filled through the protrusion, thereby reducing the possibility of adsorbent particles being trapped due to the existence of the discharge port and reducing the possibility of air leakage from the bottom.

[0020] Optionally, the sealing member is a plate-shaped structure made of elastic material and its edge is fixed to the outer wall around the discharge port, and the feed port passes through the plate body and the position where the sealing member and the protrusion are offset.

[0021] By adopting the above technical solution, the sealing member can be relatively fully filled in the discharge port, thereby reducing the possibility of adsorbent particles being stuck in the gap between the plate body and the discharge port.

[0022] Optionally, a plurality of deformation cavities are formed inside the sealing member, and the deformation cavities are staggered with the protruding portions.

[0023] By adopting the above technical solution, the plate body can be relatively easily attached to the outer wall of the shell, and the protruding portion can be matched with the sealing member at the corresponding position to fill the discharge port.

[0024] Optionally, the exhaust port is provided with a control valve for controlling opening and closing.

[0025] By adopting the above technical solution, the output position of the gas in the capsule cavity is adjusted to promote the discharge of the adsorbent particles.

[0026] Optionally, the drying mechanism includes a drying chamber and a plurality of drying nozzles arranged in the drying chamber, the input end of the drying chamber is connected to the feed port, the drying nozzles are used to input heated drying gas into the drying chamber, and an air vent is provided at the top of the drying chamber, and a discharge valve for discharging the dried adsorbent is provided at the bottom of the drying chamber.

[0027] By adopting the above technical solution, the adsorbent particles entering the drying chamber can be dried under the action of the heated drying gas, and the excess gas is discharged from the top of the drying chamber. After the drying is completed, the discharge valve is opened and the adsorbent particles can be quickly discharged under the action of the gas.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] When the adsorbent is coated, the protrusion is fully filled with sealant at the discharge port. At this time, the adsorbent particles are transported to the coating tube through the conveying component. At this time, the humidifying nozzle will spray out atomized coating liquid to maintain a relatively high humidity in the limited space of the coating tube to fully and evenly carry out the coating treatment. Thereafter, the adsorbent particles are output from the coating tube to the coating cavity. Due to the sudden increase in space, the gas will disperse toward the surrounding side of the coating cavity and carry the adsorbent particles to disperse, so as to reduce the possibility of adhesion of the adsorbent particles due to excessive humidity. In addition, the adsorbent particles entering the coating cavity will not only be driven to suspend due to the action of the coating nozzle, but will also be further dispersed due to the centrifugal force of the rotation and the impact, so as to achieve uniform coating of the new car while reducing the occurrence of adhesion. Finally, the coating can be dried by the drying mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0031] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.

[0032] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0033] Explanation of the reference numerals: 1. Shell; 11. Coating cavity; 111. Exhaust port; 112. Discharge port; 113. Control valve; 12. Coating nozzle; 121. Two-way valve; 13. Connecting ring pipe; 2. Coating mechanism; 21. Coating tube; 22. Humidifying nozzle; 23. Conveying assembly; 3. Drying mechanism; 31. Drying chamber; 311. Air vent; 312. Discharge valve; 32. Drying nozzle; 4. Control assembly; 41. Control board; 411. Feed port; 412. Board body; 413. Protrusion; 42. Seal; 421. Deformation cavity; 43. Driving member. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] The present application discloses a blood perfusion adsorbent coating device. Figure 1 , Figure 2 and Figure 3The coating device includes a shell 1, a coating mechanism 2 and a drying mechanism 3 arranged on the shell 1. A coating cavity 11 is formed inside the shell 1. The coating mechanism 2 is used to input external adsorbent particles into the coating cavity 11 and perform coating treatment. Among them, an exhaust port 111 is opened at the top of the coating cavity 11 to discharge the airflow from the top, and a control valve 113 for controlling the opening and closing of the exhaust port 111 is fixedly installed at the position of the exhaust port 111 through a pipeline; at the same time, a discharge port 112 connected to the outside is opened at the bottom of the coating cavity 11, and the drying mechanism 3 is arranged on the shell 1, and the drying mechanism 3 is used to receive the adsorbent particles discharged from the discharge port 112, and dry the adsorbent particles after coating; the discharge port 112 is provided with a control component 4 for exporting the adsorbent particles after coating.

[0036] Reference Figure 1 and Figure 2 Specifically, the coating mechanism 2 includes a coating tube 21, a plurality of humidifying nozzles 22 annularly arranged on the inner wall of the coating tube 21, and a conveying assembly 23 for conveying external adsorbent particles into the coating tube 21. The coating tube 21 is vertically arranged and fixedly connected to the inner wall at the bottom of the coating cavity 11. The humidifying nozzle 22 is fixed to the inner wall of the coating tube 21. The input end of the humidifying nozzle 22 is connected to the outside through a pipeline and is used to atomize the external coating liquid and input it into the coating tube 21. The output direction of the humidifying nozzle 22 is inclined upward and intersects with the cross-sectional profile of the coating tube 21, so as to coat the adsorbent particles in the coating tube 21. At the same time, the sprayed atomized coating liquid can flow in the coating tube 21 in a spiral shape and fully mix with the adsorbent particles. In this process, due to the limited space in the coating tube 21, a certain humidity can be maintained, so that the adsorbent particles can be relatively fully coated. The conveying component 23 is a pneumatic conveyor for conveying external adsorbent particles into the coating tube 21 .

[0037] At the same time, in order to keep the adsorbent particles in a relatively sufficient suspended state in the coating cavity 11 and separate them, two groups of coating nozzles 12 are arranged at the bottom of the coating cavity 11. One group of coating nozzles 12 surrounds the coating tube 21 and is arranged on the outer wall of the coating tube 21 or the bottom of the coating cavity 11, and the output direction is arranged toward the top outlet position of the coating tube 21, so as to timely apply impact force to make the adsorbent particles suspend and flow upward, and also to disperse the adsorbent particles that stick together; at the same time, another group of coating nozzles 12 surrounds the coating tube 21 and is arranged on the outer wall of the coating cavity 11, and the output direction is arranged toward the bottom of the coating cavity 11, so as to cooperate with another group of coating nozzles 12 to drive the adsorbent particles to circulate up and down in the coating cavity 11, so as to further mix the atomized coating liquid with the adsorbent particles.

[0038] Reference Figure 1 and Figure 2In addition, in order to reduce the possibility of excessive humidity in the coating cavity 11 due to excessive input of atomized coating liquid or insufficient input of atomized coating liquid leading to insufficient coating, at least part of the input end of the coating nozzle 12 is provided with a two-way valve 121 fixed to the outer wall of the shell 1. In this embodiment, a connecting ring pipe 13 of an annular pipeline structure is fixed to the outside of the shell 1. The connecting ring pipe 13 is connected to the input end of the coating nozzle 12 located on the outer wall of the coating cavity 11 through a pipeline. The input end of the connecting ring pipe 13 is fixed and connected to the output end of the two-way valve 121; at the same time, one input end of the two-way valve 121 is used to input dry gas, and the other input end of the two-way valve 121 is used to input atomized gas mixed with atomized solvent, so as to maintain the relative humidity in the coating cavity 11 to 60%.

[0039] Reference Figure 2 and Figure 3 Specifically, the control assembly 4 includes a control panel 41 and a sealing member 42. The control panel 41 includes a plate body 412 that is movably arranged relative to the housing 1 and a protrusion 413 formed on the plate body 412. One side of the plate body 412 is protruding and the protruding portion is hinged to the outer wall of the housing 1. The protrusion 413 is located on the outer wall of the plate body 412 facing the housing 1, and follows the rotation of the plate body 412 to cover the discharge port 112, so that the discharge port 112 can be filled with the protrusion 413, reducing the possibility of the adsorbent particles being intercepted by the discharge port 112 during the circulation process. Movement can be a process with a relative position relationship change such as sliding or rotating relative to the housing 1.

[0040] At the same time, the plate body 412 is provided with a feeding port 411 staggered with the protrusion 413, and the feeding port 411 is connected to the drying mechanism 3 through a pipeline for drying the adsorbent particles. Among them, the outer wall of the shell 1 is provided with a driving member 43 for controlling the opening and closing of the plate body 412, and the driving member 43 can be a hydraulic cylinder or an electric push cylinder. In this embodiment, the driving member 43 is an electric push cylinder and the cylinder body is hinged to the shell 1, and the telescopic end of the driving member 43 is hinged to the plate body 412 to realize the movement of the plate body 412 relative to the shell 1.

[0041] Reference Figure 2 and Figure 3 In addition, the seal 42 is used to seal the gap between the outer edge of the plate body 412 and the shell 1, so that when the protrusion 413 is away from the discharge port 112 or plugged into the discharge port 112, it can intercept the adsorbent particles.

[0042] Specifically, the seal 42 is a plate-shaped structure made of elastic material, such as a rubber plate. The seal 42 is attached to and fixed to the outer wall of the plate 412 and the protrusion 413 facing the housing 1, and the outer edge of the seal 42 is fixed to the housing 1 to achieve filling of the discharge port 112 and seal the gap between the plate 412 and the housing 1. The feed port 411 passes through the seal 42.

[0043] At the same time, in order to make the seal 42 relatively fully and conveniently fill the discharge port 112, a plurality of deformation cavities 421 are formed inside the seal 42, and the deformation cavities 421 are located around the protrusion 413. When the plate 412 rotates toward the housing 1, the portion with the deformation cavity 421 can be compressed, and at this time, the protrusion 413 is partially filled in the discharge port 112, so that the seal 42 can keep the inner wall of the envelope cavity 11 flush or protruding, thereby achieving sealing while reducing the impact on the envelope in the envelope cavity 11.

[0044] During use, the coating tube 21 is used to separate the adsorbent particles so that a relatively high coating liquid content is maintained in a limited space, so that the adsorbent particles can relatively fully contact with the atomized coating liquid and complete the coating process. Thereafter, when the adsorbent particles enter the coating cavity 11 from the coating tube 21, the pressure is released and the space is expanded, so that the adsorbent particles can rapidly diffuse toward the surrounding side of the coating cavity 11. Combined with the impact of the gas sprayed from the coating nozzle 12 on the outer wall of the coating tube 21, the adsorbent particles can be quickly separated, thereby reducing the possibility of the adsorbent particles sticking to each other.

[0045] At the same time, due to the presence of the coating nozzle 12, the relative humidity and the content of the atomized solvent in the coating cavity 11 can be maintained, so that the atomized solvent content in the coating tube 21 and the coating cavity 11 maintains a relatively stable difference. At this time, the adsorbent particles enter the coating cavity 11 after coating, and can be relatively quickly initially coated and solidified due to the difference in humidity, and finally discharged to the drying mechanism 3 through the discharge port 112 and the feed port 411 for sufficient drying treatment, which can not only optimize the quality of the coating, but also form a uniform and dense coating on the surface of the adsorbent particles, and can significantly reduce the occurrence of adhesion. When the adsorbent particles need to be fully discharged from the coating cavity 11, the discharge valve 312 can be closed so that the adsorbent particles can be fully brought into the drying mechanism 3 by the airflow for drying treatment.

[0046] Reference Figure 1 and Figure 2The drying mechanism 3 includes a drying chamber 31 and a plurality of drying nozzles 32 arranged on the inner wall of the drying chamber 31. The bottom of the drying chamber 31 is connected to the feed port 411 through a pipeline. At the same time, a gas release port 311 is provided at the top of the drying chamber 31 to discharge excess gas for treatment. An outlet for discharging the adsorbent is provided at the bottom of the drying chamber 31, and a discharge valve 312 is provided at the outlet to control the discharge of the adsorbent after drying.

[0047] The implementation principle of the embodiment of the present application is as follows: when in use, the adsorbent particles are transported to the coating tube 21 through the conveying component 23. At this time, the atomized coating liquid output by the humidifying nozzle 22 can contact with the adsorbent particles in a limited space and complete the coating, and then enter the coating cavity 11. Under the action of the coating nozzle 12, not only can the relative humidity in the coating cavity 11 be maintained to reduce the possibility of direct drying of the coating liquid on the surface of the adsorbent particles, but also the adsorbent particles can be fully dispersed through the impact of the coating nozzle 12 and the coating liquid can be evenly attached to the surface of the adsorbent particles, thereby forming a uniform and dense coating. Finally, the drying process can be carried out by the drying mechanism 3.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A blood perfusion adsorbent coating device, characterized in that: It comprises a shell (1), a coating mechanism (2) and a drying mechanism (3) arranged in the shell, wherein a coating cavity (11) is formed in the shell (1), and a coating nozzle (12) for driving adsorbent particles to at least suspend is provided at the bottom of the coating cavity (11); A coating mechanism (2), comprising a coating tube (21), a plurality of humidifying nozzles (22) circumferentially arranged on the inner wall of the coating tube (21), and a conveying assembly (23) for conveying adsorbent particles into the coating tube (21), wherein the coating tube (21) is vertically fixedly connected to the bottom of the coating cavity (11), the humidifying nozzle (22) is used to convey atomized coating liquid toward the center of the coating tube (21), and the conveying assembly (23) is arranged on the lower side of the humidifying nozzle (22) and drives the adsorbent particles from the coating tube (21) into the coating cavity (11); The drying mechanism (3) is arranged on the housing (1) and is used to dry the adsorbent particles output from the capsule cavity (11).

2. The encapsulation device of a blood perfusion adsorbent according to claim 1, characterized in that: The spray output direction of the humidifying nozzle (22) is arranged to be inclined upward and intersect with the cross section of the coating tube (21).

3. The encapsulation device of a blood perfusion adsorbent according to claim 1, characterized in that: At least part of the coating nozzle (12) input ends are provided with a two-way valve (121) comprising two input ends, and the two input ends of the two-way valve (121) are respectively used to input drying gas and atomizing gas mixed with atomizing solvent.

4. A blood perfusion adsorbent coating device according to any one of claims 1 to 3, characterized in that: The top of the coating cavity (11) is provided with an exhaust port (111), and the bottom of the coating cavity (11) is provided with an outlet (112) connected to the outside, the shell (1) is provided with a control component (4) for controlling the opening and closing of the outlet (112), and the drying mechanism (3) is connected to the outlet (112) via the control component (4).

5. The coating device of the blood perfusion adsorbent according to claim 4, characterized in that: The control assembly (4) comprises a control panel (41) arranged to move relative to the housing (1) towards or away from the discharge port (112) and a sealing member (42) arranged on the housing (1); the housing (1) is provided with a driving member (43) for driving the control panel (41) to block or disengage from the discharge port (112); the sealing member (42) is used to seal the gap between the control panel (41) and the housing (1) and form a gap connected to the encapsulation cavity (11); the control panel (41) is provided with a feed port (411) for conveying the adsorbent to the drying mechanism (3), and the feed port (411) is arranged to be offset from the discharge port (112).

6. The coating device of the blood perfusion adsorbent according to claim 5, characterized in that: The control plate (41) comprises a plate body (412) arranged to move relative to the shell (1) toward or away from the discharge port (112) and a protrusion (413) formed on the plate body (412); the sealing member (42) is used to seal the gap between the plate body (412) and the shell (1) and to follow the movement of the plate body (412); the protrusion (413) is adapted to the discharge port (112); and the driving member (43) is used to control the movement of the plate body (412) toward or away from the shell (1).

7. The coating device of the blood perfusion adsorbent according to claim 6, characterized in that: The sealing member (42) is a plate-shaped structure made of elastic material and its edge is fixed to the outer wall around the discharge port (112). The feed port (411) penetrates the plate body (412) and the position where the sealing member (42) and the protrusion (413) are offset.

8. The coating device of the blood perfusion adsorbent according to claim 7, characterized in that: A plurality of deformation cavities (421) are formed inside the sealing member (42), and the deformation cavities (421) and the protruding portions (413) are arranged in a staggered manner.

9. The coating device of the blood perfusion adsorbent according to claim 4, characterized in that: The exhaust port (111) is provided with a control valve (113) for controlling opening and closing.

10. The coating device of the blood perfusion adsorbent according to claim 5, characterized in that: The drying mechanism (3) comprises a drying chamber (31) and a plurality of drying nozzles (32) arranged in the drying chamber (31); the input end of the drying chamber (31) is connected to the feed port (411); the drying nozzles (32) are used to feed heated drying gas into the drying chamber (31); a gas discharge port (311) is provided at the top of the drying chamber (31); and a discharge valve (312) for discharging the dried adsorbent is provided at the bottom of the drying chamber (31).

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