Efficient complex iron desulfurization regeneration device

Abstract

The application relates to the field of chemical production, and particularly discloses a high-efficiency complex iron desulfurization regeneration device, which comprises a tank body, an overflow plate and a partition plate are vertically arranged in the tank body, and the tank body is sequentially divided into a sedimentation zone, a regeneration zone and a buffer zone; the sedimentation zone is used for receiving desulfurization rich liquid and performing preliminary sedimentation separation, a sulfur mud outlet one is arranged at the bottom of the sedimentation zone; the regeneration zone is communicated with the sedimentation zone through the overflow plate, is used for performing oxidation regeneration on overflowed clear liquid, and an aeration regeneration assembly is arranged in the regeneration zone; the buffer zone is communicated with the regeneration zone through the partition plate, is used for buffering and outputting regenerated lean liquid, and is provided with a lean liquid outlet; the aeration regeneration assembly is a modular structure which can be integrally separated from the regeneration zone and installed without emptying the materials in the tank body; the application can effectively solve the plugging problem of sulfur paste while guaranteeing efficient regeneration, can realize online rapid cleaning and maintenance of the device, and can significantly reduce operation and maintenance costs.

Description

Chemical production field

[0001] This application relates to a certain chemical production field, and specifically discloses a highly efficient complexed iron desulfurization and regeneration device.

[0002] Background: Chemical Production With the rapid development of the biomass organic waste treatment industry, the efficient purification and treatment of biogas is becoming increasingly important, with hydrogen sulfide removal being a key step. Among numerous desulfurization technologies, wet desulfurization is widely used due to its large processing capacity and fast reaction rate. In particular, the complexed iron desulfurization technology, as a wet oxidation process using complexed iron as a catalyst, can directly convert hydrogen sulfide in the gas into elemental sulfur, and has significant advantages such as simple process, high sulfur capacity, high cleanliness of the treated gas, and environmental friendliness and non-toxicity.

[0003] In the complexed iron desulfurization process, the gas to be treated, rich in hydrogen sulfide, reacts with the desulfurization liquid containing complexed iron, and the resulting elemental sulfur particles gradually agglomerate to form sulfur paste. While theoretically most of the sulfur paste can be separated from the system through subsequent solid-liquid separation methods such as plate and frame filtration, in actual operation, the regeneration unit, as the core equipment for the oxidative regeneration and reactivation of the desulfurization liquid, has a very complex internal environment. On the one hand, to improve regeneration efficiency, a large amount of air needs to be introduced into the regeneration tank through an aeration device to achieve sufficient gas-liquid contact; on the other hand, the fine sulfur paste particles generated in the reaction and carried in with the rich liquid are easily adhered, deposited, and caked on the inner walls and surface of components, especially the air distribution holes of the aerator, in this environment of gas-liquid agitation and the presence of numerous gas-liquid-solid three-phase interfaces. This leads to a severe engineering and technical challenge commonly faced by existing complexed iron desulfurization regeneration units, the core of which is sulfur paste blockage.

[0004] Once sulfur paste becomes clogged in the aeration holes or inside the device, it directly disrupts the uniformity of aeration, causing flow deviation and gas short circuits. This severely reduces gas-liquid mass transfer efficiency and the regeneration effect of the desulfurization liquid, thus affecting the normal operation of the entire desulfurization system. Furthermore, it makes cleaning and maintaining the sulfur paste blockage extremely difficult: all material in the regeneration tank must be emptied, and workers must manually shovel and flush the blockage. This cleaning method not only creates a harsh working environment and is labor-intensive, but also causes prolonged system downtime, significantly reducing production line efficiency. The frequent start-ups and shutdowns, material emptying and replenishment, and high labor maintenance costs make subsequent operation and maintenance a heavy burden in the application of complex iron desulfurization technology.

[0005] It is evident that current complexed iron desulfurization and regeneration devices generally suffer from technical problems such as frequent sulfur paste blockage, difficult maintenance and cleaning, and high operation and maintenance costs. Therefore, in view of these issues, the present invention provides a highly efficient complexed iron desulfurization and regeneration device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a regeneration device that can effectively solve the problem of sulfur paste blockage while ensuring efficient regeneration, and can realize online rapid cleaning and maintenance of the device, significantly reducing operation and maintenance costs.

[0007] To achieve the above objectives, the basic solution of the present invention provides a highly efficient complexed iron desulfurization and regeneration device, comprising: The tank body is vertically equipped with an overflow plate and a baffle plate, which sequentially divide the tank body into a settling zone, a regeneration zone and a buffer zone. The settling zone is used to receive the desulfurized rich liquid and perform preliminary settling and separation, and its bottom is equipped with a sulfur mud outlet. The regeneration zone and the settling zone are connected through the overflow plate and are used to oxidize and regenerate the overflowing clear liquid. An aeration regeneration component is installed inside the zone. The buffer zone is connected to the regeneration zone via the partition and is used to buffer and output the regenerated lean solution. It is provided with a lean solution outlet. The aeration and regeneration assembly is a modular structure that can be completely extracted and installed from the regeneration zone without emptying the material in the tank.

[0008] Furthermore, the regeneration zone is equipped with a guide rail assembly, and a sliding connector is fixedly connected to the aeration regeneration assembly. The sliding connector slides with the guide rail assembly, allowing the aeration regeneration assembly to slide along the guide rail assembly from its working position to near the top of the tank.

[0009] Furthermore, the sliding connector is a C-shaped sleeve, and the guide rail assembly includes a guide rail slide tube, with the opening slot of the C-shaped sleeve slidably fitted onto the guide rail slide tube.

[0010] Furthermore, the aeration regeneration assembly includes an aeration inlet pipe, an aeration main pipe connected to the aeration inlet pipe, and at least one aeration branch pipe connected to the aeration main pipe.

[0011] Furthermore, the diameter of the main aeration pipe is 2 to 8 times the diameter of the branch aeration pipe, so as to form a buffer chamber inside the main aeration pipe to ensure uniform gas distribution.

[0012] Furthermore, the diameter of the aeration hole is 8mm to 30mm, and in the working state, the gas flow velocity at the outlet of the aeration hole is controlled between 2m / s and 10m / s to form a high-speed airflow that can blow off the attached sulfur paste and at the same time break the initial bubbles into a group of micro bubbles.

[0013] Furthermore, the aeration branch pipe is provided with aeration holes, and the opening direction of the aeration holes is downward.

[0014] Furthermore, the aeration main pipe and the aeration branch pipe are connected in a detachable and sealed manner by a flexible connecting clamp.

[0015] Furthermore, the baffle is a vertically arranged baffle. The lower end of the baffle is connected to the bottom plate of the tank and extends upward to the lower edge of the lean liquid outlet. A flow gap is left between the upper end of the baffle and the top plate of the tank for the lean liquid to flow through. Alternatively, the partition plate may be a flow equalization plate with openings at the bottom.

[0016] Furthermore, an inspection cover is provided at the top of the tank corresponding to the position directly above the aeration regeneration component. The opening width of the inspection cover is greater than the width of the main aeration pipe of the aeration regeneration component, so as to form a channel for the entire aeration regeneration component to be extracted.

[0017] The principle and effect of this solution are as follows: This invention changes the industry dilemma of requiring system shutdown and material discharge for clearing blockages: through a modular guide rail design and a flexible connection structure, maintenance personnel can pull out the aeration components like a drawer for cleaning and quickly reinstall them without emptying the material and while maintaining low system load operation. This eliminates the downtime of several hours or even days required for traditional maintenance, significantly increasing the annual effective operating time of the desulfurization system and fundamentally solving the problems of operational efficiency loss and high labor costs caused by sulfur paste blockage.

[0018] This invention utilizes the continuous scouring effect generated by high-speed jets to effectively prevent the caking of sulfur paste at the aeration orifices, significantly delaying the occurrence and extent of blockage, multiplying the single continuous operation cycle of the device, and reducing the frequency of frequent shutdowns for maintenance.

[0019] Despite employing a larger aperture to prevent clogging, this invention ensures a highly uniform and finely distributed bubble pattern within the regeneration zone through the large main pipe buffer pressure equalization and jet microbubble breaking principle. The uniform gas distribution eliminates dead zones and flow deviations, and the microbubble clusters provide a huge gas-liquid contact area, thereby guaranteeing the efficient oxidation and regeneration of the desulfurization liquid. This makes the quality of the lean liquid in the unit more stable, providing a guarantee for subsequent efficient desulfurization absorption.

[0020] This invention combines multiple independent functional tanks into a compact tank, which significantly saves equipment floor space, reduces connecting pipelines and valves, and significantly reduces investment costs in the early stages of project construction. At the same time, the integrated structure makes daily process inspection, parameter control and tank top operation more centralized and convenient, reducing management complexity.

[0021] The design principle of this invention makes it suitable not only for new projects but also for easy modification of existing traditional recycling tanks. Relying on its excellent reliability, convenient maintenance, stable process performance, and low initial investment, the device's total life cycle operating cost has an overwhelming advantage over traditional technologies, giving it extremely high industrial application value and market promotion prospects. Attached Figure Description

[0022] To more clearly illustrate the chemical production schemes in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art of chemical production, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A front view of a highly efficient complexed iron desulfurization and regeneration device according to an embodiment of this application is shown; Figure 2 A cross-sectional view (AA) of a highly efficient complexed iron desulfurization and regeneration device according to an embodiment of this application is shown. Figure 3 A top view of a highly efficient complexed iron desulfurization and regeneration device according to an embodiment of this application is shown; Figure 4 A schematic diagram of the guide rail assembly structure in a high-efficiency complexed iron desulfurization and regeneration device proposed in an embodiment of this application is shown. Figure 5 A schematic diagram of the aeration regeneration component structure in a high-efficiency complexed iron desulfurization and regeneration device proposed in this application embodiment is shown. Figure 6 A schematic diagram of the aeration branch pipe structure in a high-efficiency complexed iron desulfurization and regeneration device proposed in this application embodiment is shown. Detailed Implementation

[0024] To further illustrate the chemical production methods and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0025] The reference numerals in the accompanying drawings of the instruction manual include: 1. Tank body; 3. Settling zone; 3. Regeneration zone; 4. Buffer zone; 5. Aeration regeneration component; 5. Aeration inlet pipe; 51. Aeration main pipe; 52. C-type sleeve; 53. Sleeve support plate; 54. Flexible connection clamp; 55. Aeration branch pipe; 56. Rich liquid inlet; 6. Aeration inlet; 7. Lean liquid outlet; 8. Sulfur sludge outlet one; 9. Sulfur sludge outlet two; 10. Remote level gauge port; 11. Filtration liquid return inlet; 12. Chemical inlet; 13. Alkali inlet; 14. Water inlet; 15. Exhaust port; 16. Support angle steel; 17. Guide rail assembly; 18. Guide rail slide tube; 181. Guide rail support rib; 182. Support pad; 183. Inspection foot; 19. Inspection cover; 20. Lifting lug; 21. Side support leg; 22. Middle support leg; 23. Inspection cover; 24. Reinforcing channel steel; 25. Partition plate; 26. Overflow plate; 27.

[0026] A highly efficient complexed iron desulfurization and regeneration device, implementing, for example... Figure 1 As shown: It includes a horizontal tank 1, which is supported by side legs 22 and middle legs 23. Inside the tank 1, it is divided into three relatively independent but sequentially connected areas: a settling zone 3, a regeneration zone 3, and a buffer zone 4 by vertically arranged overflow plates 27 and baffles 26. Compared with the traditional process of placing the settling and regeneration functions in multiple independent tanks and connecting them with pipelines, the integrated zoning design greatly saves equipment space and engineering investment, and enables the process to achieve gradient management of sulfur paste concentration.

[0027] The desulfurized rich liquor from the desulfurization absorption process first enters the settling zone 3 through the rich liquor inlet 6. The settling zone 3 utilizes gravity settling to provide a relatively static separation space for the large amount of elemental sulfur particles carried in the rich liquor. Most of the heavier sulfur paste particles quickly settle to the bottom of the conical or sloping tank in this area and are discharged from the system through the timed sulfur sludge outlet 9, entering the subsequent sulfur recovery process. After preliminary settling and separation, the supernatant, with its significantly reduced sulfur paste content, overflows smoothly into the regeneration zone 3 through the top of the overflow plate 27 under the influence of the liquid level difference. This overflow method ensures that only the clear liquor enters the next process, while retaining the vast majority of the sulfur paste in the settling zone 3. This effectively prevents excessive sulfur paste from entering the regeneration zone 3, contaminating the aeration components, and exacerbating the risk of blockage, thus improving the operating conditions of the regeneration zone 3 from the source.

[0028] The clarified rich liquor undergoes a thorough countercurrent contact with air from aeration inlet 7 here. Regeneration zone 3 is connected to reagent inlet 13, alkali inlet 14, and water inlet 15 to replenish catalyst, adjust solution pH, and maintain system water balance.

[0029] In this embodiment, the aeration regeneration component 5 adopts a modular design that can be extracted online. Specifically, parallel guide rail components 18 are fixedly installed on the two side walls of the regeneration zone 3 or on the preset support structure by supporting angle steel 17. The guide rail components 18 are composed of guide rail slide tubes 181, guide rail support ribs 182 and bottom support pads 183, forming a smooth slide that extends from the top of the tank 1 to the working position. The aeration regeneration component 5 is an independent module as a whole. Its core structure consists of an aeration inlet pipe 51, an aeration main pipe 52 connected to the aeration inlet pipe 51, multiple aeration branch pipes 56 connected to the aeration main pipe 52, and sliding connectors. Multiple aeration branch pipes 56 are arranged in parallel, each detachably and sealed to the main aeration pipe 52 via a flexible connecting clamp 55. At both ends or specific positions of the main aeration pipe 52, C-shaped sleeves 53 are fixedly connected via sleeve support plates 54. The openings of the C-shaped sleeves 53 slide onto the guide rail slide tubes 181 of the guide rail assembly 18. This sliding fit between the C-shaped sleeves 53 and the guide rail provides guidance and support for the precise and stable movement of the entire aeration assembly. Simultaneously, an inspection cover 20 is provided at the top of the tank 1, directly above the aeration assembly. The opening width of the inspection cover 20 is slightly larger than the width of the main aeration pipe 52, providing a necessary passage for the complete removal of the aeration assembly.

[0030] After the device has been running for a period of time, even if sulfur paste adheres to and caking on the aeration components, there is no need to empty the material as with traditional devices. Maintenance personnel only need to open the inspection cover 20, enter the tank top, and first disconnect the flexible couplings 55 between the aeration inlet pipe 51, the main aeration pipe 52, and each aeration branch pipe 56. The aeration branch pipes 56 are then detached as close as possible. When it is necessary to remove the aeration components, the liquid level in the tank can be lowered appropriately so that the operator can reach the connection point through the inspection cover 20, or a flexible coupling 55 structure that is easy to operate remotely underwater can be used. Then, using the lifting lugs 21 or manually, the main aeration pipe 52, together with its C-shaped sleeve 53, is smoothly slid upwards along the guide rail assembly 18 as a whole until it is completely removed from the tank body 1. At this point, the entire aeration component can be easily hoisted to the ground for thorough cleaning or replacement. After cleaning, the above steps are reversed to easily reinstall the component. The entire process requires no venting of the desulfurization liquid, allowing the system to maintain low-load operation or undergo brief gas interruptions, enabling online cleaning and rapid replacement. Simultaneously, when the aeration components are removed for cleaning, the air inlet valve can be closed, and the upstream rich liquid inflow rate can be reduced, causing the liquid level to temporarily drop below the aeration components, thus allowing maintenance operations to be performed without any discharge. This embodiment overcomes the drawbacks of traditional cleaning methods that require liquid drainage and system shutdown, significantly reducing maintenance time and labor intensity, and fundamentally optimizing the system's continuous operation efficiency and total lifecycle maintenance costs.

[0031] Meanwhile, the aeration and regeneration component 5 also achieves efficient anti-clogging and air equalization functions, as detailed below: First, the aeration main pipe 52 has a diameter much larger than that of the aeration branch pipes 56, typically 2 to 8 times the branch pipe diameter. This large-pipe-within-a-small-pipe structure creates a huge buffer chamber, ensuring that the dynamic pressure of the high-pressure air is evenly distributed to each downstream aeration branch pipe 56 with near-uniform static pressure. This is a prerequisite for ensuring uniform flow in each branch pipe. Second, all openings on each aeration branch pipe 56 face downwards, fundamentally preventing sulfur paste particles from falling directly into the pores due to gravity. Third, the aeration holes are designed with large diameters, ranging from 8mm to 30mm, and the gas velocity at the outlet is strictly controlled at 2-10m / s. This large-diameter, high-velocity structure creates a high-speed jet of airflow, which not only strongly stirs and entrains the surrounding liquid, improving gas-liquid mass transfer efficiency, but also effectively regulates the flow near the orifice. A strong self-flushing effect is generated, and sulfur paste particles deposited or attached to the orifice are instantly blown off by the high-speed airflow, preventing the formation of a stable caking layer, thus achieving dynamic anti-clogging based on fluid dynamics. At the same time, although the single orifice diameter is relatively large, through the strictly controlled high flow velocity of 2-10 m / s, the jetting and turbulent state of the airflow at the orifice causes the initial bubbles to be rapidly broken into micro-bubble clusters under huge shear force. Combined with the equally spaced orifices, a uniform micro-bubble cloud is still formed on a macroscopic scale, ultimately achieving a unity of anti-clogging performance and high mass transfer efficiency, preventing the formation of excessively large bubbles due to large orifice diameter, which would be detrimental to gas-liquid mass transfer. Fourth, the opening spacing on each aeration branch pipe 56 is consistent, ensuring that the distribution of bubbles is uniform and dense across the entire cross-section of the regeneration zone 3, with no dead zones or flow deviations, maximizing the gas-liquid two-phase contact area and uniformizing the contact time, thus achieving high and stable regeneration efficiency.

[0032] After the rich liquid completes oxidation regeneration in regeneration zone 3, the desulfurization liquid regains its absorption activity and becomes lean liquid. The lean liquid, along with a small amount of fine sulfur particles that may remain during the regeneration process, enters buffer zone 4 through baffle 26 located at the end of regeneration zone 3. The function of baffle 26 is to prevent the violent gas-liquid disturbance in regeneration zone 3 from directly affecting the stability of the liquid surface in buffer zone 4. After the lean liquid enters the stable buffer zone 4, the very small amount of residual sulfur sludge can be further settled and periodically discharged through sulfur sludge outlet 2 10 at the bottom. The clear lean liquid is finally stably extracted through lean liquid outlet 8 and sent back to the desulfurization absorption tower for recycling. Lean liquid outlet 8 is located at a certain height on the side wall of buffer zone 4, above sulfur sludge outlet 2 10, to ensure that the upper clear liquid is extracted.

[0033] In this embodiment, the baffle 26 is a vertically arranged baffle plate. Its lower end is connected to the bottom plate of the tank and extends upward to the lower edge of the lean liquid outlet 8. A flow gap is left between its upper end and the top plate of the tank body 1 to allow the lean liquid to flow smoothly. Alternatively, in other embodiments, the baffle 26 is a flow equalization plate with a bottom opening. The flow velocity in the opening is designed to be extremely low to form a stable buffer zone 4.

[0034] The remote level gauge port 11 and the filter liquid return inlet 12 set on the buffer zone 4 meet the system's requirements for automatic level control and filter liquid recovery; the exhaust gas generated during the regeneration process is discharged through the exhaust port 16 on the top of the tank; in addition, the maintenance step 19 and inspection cover 24 arranged on the tank body 1, as well as the reinforcing channel steel 25 and support legs, ensure the stability of the overall structure and the accessibility of each area, facilitating daily inspection.

[0035] In summary, compared to existing technologies, this embodiment achieves effective pre-separation of sulfur paste before the critical regeneration stage, curbing the worsening of blockage at its source, and boasts a compact and efficient structure. Secondly, the modular design, combining sliding cooperation between guide rails and sleeves with flexible connections to clamps, enables rapid online extraction, cleaning, and installation of the aeration components, completely resolving the industry pain point of requiring downtime for material discharge during maintenance. Furthermore, the combined design of large-diameter pressure equalization, large-aperture high-speed jet, downward-facing openings, and equidistant air distribution achieves dynamic self-cleaning and anti-clogging with no moving parts and low energy consumption, as well as efficient and uniform aeration. This allows the device to achieve efficient and continuous regeneration while possessing extremely high operational reliability and ease of maintenance, effectively reducing the total lifecycle cost.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of chemical production can make some modifications or alterations to the above-disclosed chemical production content to create equivalent embodiments without departing from the scope of the chemical production scheme of the present invention. Any indirect modifications, equivalent changes and alterations made to the above embodiments based on the chemical production essence of the present invention without departing from the scope of the chemical production scheme of the present invention shall still fall within the scope of the chemical production scheme of the present invention.

Claims

1. A high-efficiency complexed iron desulfurization and regeneration device, characterized in that, include: The tank body is vertically equipped with an overflow plate and a baffle plate, which sequentially divide the tank body into a settling zone, a regeneration zone and a buffer zone. The settling zone is used to receive the desulfurized rich liquid and perform preliminary settling and separation, and its bottom is equipped with a sulfur mud outlet. The regeneration zone and the settling zone are connected through the overflow plate and are used to oxidize and regenerate the overflowing clear liquid. An aeration regeneration component is installed inside the regeneration zone. The buffer zone is connected to the regeneration zone via the partition and is used to buffer and output the regenerated lean solution. It is provided with a lean solution outlet. The aeration and regeneration assembly is a modular structure that can be completely extracted and installed from the regeneration zone without emptying the material in the tank.

2. The high-efficiency complexed iron desulfurization and regeneration device according to claim 1, characterized in that, The regeneration zone is equipped with a guide rail assembly, and a sliding connector is fixedly connected to the aeration regeneration assembly. The sliding connector slides with the guide rail assembly, allowing the aeration regeneration assembly to slide along the guide rail assembly from its working position to near the top of the tank.

3. The high-efficiency complexed iron desulfurization and regeneration device according to claim 2, characterized in that, The sliding connector is a C-shaped sleeve, and the guide rail assembly includes a guide rail slide tube. The opening slot of the C-shaped sleeve is slidably fitted onto the guide rail slide tube.

4. The high-efficiency complexed iron desulfurization and regeneration device according to claim 1, characterized in that, The aeration regeneration assembly includes an aeration inlet pipe, an aeration main pipe connected to the aeration inlet pipe, and at least one aeration branch pipe connected to the aeration main pipe.

5. The high-efficiency complexed iron desulfurization and regeneration device according to claim 4, characterized in that, The diameter of the main aeration pipe is 2 to 8 times the diameter of the branch aeration pipe, so as to form a buffer chamber inside the main aeration pipe to ensure uniform gas distribution.

6. The high-efficiency complexed iron desulfurization and regeneration device according to claim 5, characterized in that, The diameter of the aeration holes is 8mm to 30mm, and in the working state, the gas flow velocity at the outlet of the aeration holes is controlled between 2m / s and 10m / s to form a high-speed airflow that can blow off the attached sulfur paste and at the same time break the initial bubbles into a group of micro bubbles.

7. A high-efficiency complexed iron desulfurization and regeneration device according to any one of claims 4-6, characterized in that, The aeration branch pipe is provided with aeration holes, and the opening direction of the aeration holes is downward.

8. The high-efficiency complexed iron desulfurization and regeneration device according to claim 1, characterized in that, The aeration main pipe and the aeration branch pipe are connected in a detachable and sealed manner by a flexible connecting clamp.

9. A high-efficiency complexed iron desulfurization and regeneration device according to any one of claims 1, characterized in that, The baffle is a vertically arranged baffle. The lower end of the baffle is connected to the bottom plate of the tank and extends upward to the lower edge of the lean liquid outlet. A flow gap is left between the upper end of the baffle and the top plate of the tank for the lean liquid to flow through. Alternatively, the partition plate may be a flow equalization plate with openings at the bottom.

10. A high-efficiency complexed iron desulfurization and regeneration device according to any one of claims 4, characterized in that, A maintenance cover is provided at the top of the tank, directly above the aeration regeneration component. The opening width of the maintenance cover is greater than the width of the main aeration pipe of the aeration regeneration component, so as to form a channel for the entire aeration regeneration component to be pulled out.

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