Methane adsorption and recovery device and method and bio-organic fertilizer preparation process

Abstract

The invention discloses a methane adsorption and recovery device and method and a bio-organic fertilizer preparation process, and relates to the field of organic fertilizer preparation, the methane adsorption and recovery device comprises a plurality of adsorption towers, a plurality of separation nets are arranged in the adsorption towers, the separation nets are concentrically arranged, an adsorption material is arranged between every two adjacent separation nets, and the separation nets can rotate in the adsorption towers; a top isolation plate is arranged at the top of the adsorption tower, a bottom isolation plate is arranged at the bottom of the adsorption tower, and a feeding assembly is arranged on the top isolation plate. Different adsorption materials can be stored among the separation nets, so that methane is sequentially adsorbed, the adsorption effect is improved, the adsorption materials can be rapidly discharged, new adsorption materials are added, different adsorption materials can be added into different separation nets when the new adsorption materials are added, and the adsorption effect of methane is guaranteed. The operation of manually replacing the adsorption material is reduced, the use is more convenient, time and labor are saved, the downtime during replacement of the adsorption material is shortened, and the adsorption efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of organic fertilizer preparation, and particularly to a methane adsorption and recovery device, a method, and a biological organic fertilizer preparation process. Background Art

[0002] A methane adsorption and recovery device is a technical equipment that selectively captures methane components in a mixed gas through an adsorption material to achieve its separation and recovery. Its core lies in the efficient separation by utilizing the adsorption capacity difference of the adsorbent for methane and other gases (such as carbon dioxide, nitrogen, etc.). Common technologies include pressure swing adsorption (PSA), temperature swing adsorption (TSA), membrane separation, and activated carbon adsorption. For example, in pressure swing adsorption, the adsorbent preferentially adsorbs impurity gases under high pressure, and methane, as a component that is more difficult to adsorb, penetrates the adsorption bed and is collected. Subsequently, the pressure is reduced to regenerate the adsorbent and release the impurity gases, and the methane purification is completed through the cycle. Membrane separation relies on the difference in the permeation rate of methane and other gases in a specific membrane material to achieve enrichment. The activated carbon adsorption device adsorbs methane through activated carbon with a high specific surface area, and then desorbs and recovers it by heating or depressurizing, which can not only reduce greenhouse gas emissions but also recover methane as a clean energy or chemical raw material, with both environmental benefits and economic value.

[0003] The methane adsorption and recovery device is mainly used to treat biogas generated in the anaerobic fermentation process during the production of organic fertilizers. By separating and recovering methane, resource utilization and environmental protection and emission reduction are achieved. In the production of organic fertilizers, organic wastes such as livestock manure and straw are anaerobically digested to produce biogas, whose main components are methane (50%-70%) and carbon dioxide (30%-50%). At this time, the methane adsorption and recovery device can increase the methane purity to over 90% through pressure swing adsorption, meeting the standards for gas power generation, boiler fuel, or vehicle fuel. To ensure the adsorption efficiency, some adsorption devices are provided with multiple adsorption materials, and multi-stage adsorption is carried out through activated carbon - zeolite molecular sieve - metal-organic framework materials.

[0004] Chinese Patent CN221230270U discloses a monofluoromethane adsorption and purification device, including an installation base, an installation bracket is installed on the installation base, a first adsorption column, a second adsorption column, and a third adsorption column are installed on the installation base and on one side of the installation bracket. The first adsorption column is filled with an alumina adsorbent, the second adsorption column is filled with a molecular sieve adsorbent, and the third adsorption column is filled with an activated carbon adsorbent. Six temperature detection rods are installed at the inner end of the installation bracket, and the six temperature detection rods are inserted into the alumina adsorbent, the molecular sieve adsorbent, and the activated carbon adsorbent in pairs. By respectively arranging the alumina adsorbent, the molecular sieve adsorbent, and the activated carbon adsorbent in the first adsorption column, the second adsorption column, and the third adsorption column, the efficiency of monofluoromethane adsorption and purification can be relatively high, and the purity of monofluoromethane can be relatively high. Finally, the recovery rate of monofluoromethane can be increased, and the purification pressure of the distillation column can be relatively low;

[0005] Chinese Patent CN105727688A discloses a pressure swing adsorption tower, which includes a tower body. A base is provided at the bottom of the tower body, an air outlet pipe is connected to the upper end of the tower body, and an air inlet pipe is connected to the lower end of the tower body. An adsorption partition plate is provided in the middle of the tower body, which divides the tower body into a nitrogen adsorption chamber located in the upper part and a carbon dioxide adsorption chamber located in the lower part. A first annular distribution pipe is connected to the central position of the adsorption partition plate in the nitrogen adsorption chamber. The upper port of the first annular distribution pipe is closed, and 13X molecular sieve is filled between the first annular distribution pipe and the tower body. A second annular distribution pipe is provided at the central position in the carbon dioxide adsorption chamber, and activated carbon is filled between the second annular distribution pipe and the tower body, realizing the separation and recovery of three gases, namely methane, nitrogen and carbon dioxide. The adsorbent has a high adsorption capacity, low process requirements, reduces production costs, and improves the continuity of the process.

[0006] The above patent and the prior art also have the following defects:

[0007] Some adsorption towers are provided with a variety of adsorption materials. However, the existing adsorption materials will become ineffective after a long time of adsorption operation, especially in pressure swing and temperature swing adsorption, and the adsorption materials need to be replaced. Replacing a variety of materials in the adsorption tower is rather troublesome, with a large operation difficulty, time-consuming and laborious, resulting in a long disassembly and shutdown time, reducing the adsorption efficiency. At the same time, when filling a variety of adsorption materials, they are likely to be mixed, resulting in a decline in the adsorption capacity (the mixed adsorption materials cannot achieve first rough adsorption - then fine adsorption, thus leading to a decline in the adsorption capacity).

[0008] Therefore, the present application provides a methane adsorption recovery device, method and biological organic fertilizer preparation process to meet the requirements. Summary of the Invention

[0009] The purpose of the present application is to provide a methane adsorption recovery device, method and biological organic fertilizer preparation process. Through a plurality of partition nets, different adsorption materials can be stored between the partition nets, enabling methane to be adsorbed sequentially, improving the adsorption effect. When the adsorption materials between the partition nets become ineffective, the adsorption materials can be quickly discharged and new adsorption materials can be added. When adding new adsorption materials, different adsorption materials can be added to different partition nets to ensure the adsorption effect of methane, reduce the operation of manually replacing the adsorption materials, be more convenient to use, time-saving and labor-saving, reduce the shutdown time when replacing the adsorption materials, and improve the adsorption efficiency.

[0010] To achieve the above object, the present application provides the following technical solutions: a methane adsorption recovery device, including a plurality of adsorption towers, wherein a plurality of partition nets are arranged in the adsorption tower, and the plurality of partition nets are concentrically arranged. An adsorption material is arranged between two adjacent partition nets. The partition net can rotate in the adsorption tower. A top isolation plate is arranged at the top of the adsorption tower, and a bottom isolation plate is arranged at the bottom of the adsorption tower;

[0011] A feed component is arranged on the top isolation plate. The feed component includes a feed pipe, a sealing plate, and a plurality of switching pipes. The plurality of switching pipes are all arranged on the sealing plate, and the plurality of switching pipes are respectively arranged between adjacent partition nets. The sealing plate can drive the switching pipes to rotate. A feed hole is opened on the top isolation plate. When the corresponding switching pipe rotates to the position of the feed hole, the top of the corresponding switching pipe is communicated with the feed pipe;

[0012] A plurality of discharge pipes are arranged on the bottom isolation plate. The discharge pipes are arranged on the bottom isolation plate, and the plurality of discharge pipes are arranged between adjacent partition nets.

[0013] Preferably, a material distribution component is arranged on the adsorption tower. The material distribution component includes a plurality of material distribution pipes, a material distribution box, a plurality of material distribution valve plates, and a communication pipe. The plurality of material distribution pipes are all fixed and communicated with the material distribution box. The material distribution valve plates are arranged in the material distribution box. The material distribution box is fixed and communicated with the feed pipe. The material distribution valve plates can rotate from a horizontal state to a vertical state to communicate the corresponding material distribution pipes with the feed pipe. When the material distribution valve plates rotate, the communication pipe can move downward to sleeved on the feed pipe and the corresponding switching pipe.

[0014] Preferably, the material distribution component includes a plurality of push cylinders, a moving plate, a plurality of material distribution valve seats, a moving rack, a moving gear, and a moving rod. The moving rack is fixedly installed at the output end of the push cylinder. The moving plate abuts against the bottoms of the plurality of moving racks. The material distribution valve seats are fixedly installed in the material distribution box. The material distribution valve plates are arranged in the material distribution valve seats. The moving gear is fixedly installed on the material distribution valve plates. The moving rack meshes with the moving gear. The moving rod is fixedly installed on the moving plate. The moving rod penetrates through the adsorption tower and is slidably matched with the adsorption tower. The communication pipe is fixedly installed on the moving rod. The communication pipe is sleeved on the feed pipe. A protection box is fixedly installed on the adsorption tower. The material distribution box is arranged in the protection box. The push cylinders are fixedly installed in the protection box.

[0015] Preferably, a rotating motor is fixedly installed inside the adsorption tower. The output end of the rotating motor is fixedly installed with a rotating gear. A rotating cylinder is fixedly installed on the sealing plate, and a rotating gear ring is fixedly installed on the rotating cylinder. The rotating gear meshes with the rotating gear ring.

[0016] Preferably, a driving gear ring is fixedly installed on the partition net. A driving motor is fixedly installed on the adsorption tower. The output end of the driving motor is fixedly installed with a driving rod. The driving rod penetrates through the adsorption tower and is rotatably connected to the adsorption tower. A driving gear is fixedly installed on the driving rod. The driving gear meshes with the driving gear ring. A plurality of the partition nets are connected by fixing frames.

[0017] Preferably, a plurality of the discharge pipes are all fixedly installed on the bottom isolation plate. An electromagnetic valve is arranged inside the discharge pipe. The discharge pipe penetrates through the bottom of the adsorption tower and extends outwards. The top isolation plate is fixedly installed inside the adsorption tower near the top position. The bottom isolation plate is fixedly installed near the bottom position of the adsorption tower. The tops of a plurality of the partition nets are rotatably connected to the top isolation plate. The bottoms of a plurality of the partition nets are rotatably connected to the bottom isolation plate. A pressing block is fixedly installed inside the adsorption tower. A pressing groove is formed on the pressing block. The sealing plate is arranged inside the pressing groove. The discharge pipe penetrates through the adsorption tower and extends outwards. A scraping plate is fixedly installed between adjacent partition nets. The scraping plate abuts against the bottom isolation plate.

[0018] Preferably, a sliding rod is fixedly installed on the material distribution box through a fixing block. The moving plate is sleeved on the sliding rod and is slidably matched with the sliding rod. A return spring is fixedly installed on the moving plate. One end of the return spring is fixedly installed on the fixing block. The return spring is sleeved on the sliding rod.

[0019] Preferably, an air inlet pipe is connected to the bottom of the adsorption tower. An air outlet pipe is connected to the top of the adsorption tower. A collection tank is connected to the air inlet pipe. A switching valve is arranged inside the air inlet pipe.

[0020] A methane adsorption and recovery method uses the above methane adsorption and recovery device, and includes the following steps:

[0021] The gas is introduced into the adsorption tower at intervals;

[0022] The gas passes through the partition net. Different adsorption materials inside the partition net adsorb methane in sequence, and the remaining gas is discharged;

[0023] After that, the gas is stopped from being introduced into the adsorption tower, and the adsorption tower is evacuated. The methane in the adsorption material is released and collected;

[0024] After the adsorption material in the separation net fails, open the discharge pipe to discharge the adsorption material in the separation net, and then close the discharge pipe;

[0025] The rotation of the blocking plate drives the rotation of the switching pipe, so that the switching pipe rotates to the position of the feed hole. The top of the switching pipe corresponds to the feed pipe, and the bottom is located between two adjacent separation nets;

[0026] The corresponding material distribution valve plate rotates from the horizontal state to the vertical state. The corresponding material distribution pipe is communicated with the feed pipe through the material distribution box. The material distribution valve plate drives the communication pipe to descend. The communication pipe is sleeved on the feed pipe and the corresponding switching pipe. The adsorption material in the material distribution pipe enters the feed pipe and then enters the corresponding switching pipe through the feed pipe to add new adsorption material to the corresponding separation net;

[0027] After adding different adsorption materials to different separation nets in sequence, the blocking plate rotates to block the feed hole, and the replacement of the adsorption material is completed.

[0028] The preparation process of bio-organic fertilizer uses the above methane adsorption and recovery device.

[0029] In summary, the technical effects and advantages of the present invention are as follows:

[0030] 1. In the present invention, through multiple separation nets, different adsorption materials can be stored between the separation nets, so that methane can be adsorbed sequentially, improving the adsorption effect. When the adsorption material between the separation nets fails, the adsorption material can be quickly discharged and new adsorption material can be added. When adding new adsorption material, different adsorption materials can be added to different separation nets to ensure the adsorption effect of methane, reduce the operation of manually replacing the adsorption material, be more convenient to use, save time and effort, reduce the downtime when replacing the adsorption material, and improve the adsorption efficiency;

[0031] 2. In the present invention, when different switching pipes rotate to correspond to the feed pipe, different material distribution pipes can be synchronously communicated with the feed pipe, so that the specified adsorption material can be introduced into different separation nets, ensuring that the adsorption materials do not mix and guaranteeing the adsorption efficiency. When the material distribution valve plate rotates to communicate the corresponding material distribution pipe with the feed pipe, it can drive the communication pipe to descend and fix the feed pipe and the corresponding switching pipe to prevent leakage caused by the displacement of the switching pipe, improving the stability;

[0032] 3. In the present invention, the driving motor drives the driving rod to rotate, the driving rod drives the driving gear to rotate, the driving gear drives the driving gear ring to rotate, and the driving gear ring drives the separation net to rotate, so that the adsorption material entering the separation net can be evenly distributed in the separation net, improving the adsorption capacity. Description of the Drawings

[0033] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 One of the three-dimensional structure diagrams of the present invention;

[0035] Figure 2 Another three-dimensional structure diagram of the present invention;

[0036] Figure 3 The third three-dimensional structure diagram of the present invention;

[0037] Figure 4 For the present invention Figure 3 An enlarged view of part A in the present invention;

[0038] Figure 5 A structural diagram of the adsorption tower and the collection tank in the present invention;

[0039] Figure 6 For the present invention Figure 5 An enlarged view of part B in the present invention;

[0040] Figure 7 A structural diagram of the adsorption tower and the partition net in the present invention;

[0041] Figure 8 For the present invention Figure 7 An enlarged view of part C in the present invention;

[0042] Figure 9 For the present invention Figure 7 An enlarged view of part D in the present invention;

[0043] Figure 10 A structural diagram of the material distribution pipe, the material distribution box and the communication pipe in the present invention;

[0044] Figure 11 A structural diagram of the material distribution box, the material distribution valve plate and the material distribution valve seat in the present invention.

[0045] In the figure: 1, adsorption tower; 2, partition net; 3, top isolation plate; 4, bottom isolation plate; 5, feed assembly; 51, feed pipe; 52, plugging plate; 53, switching pipe; 6, discharge pipe; 7, material distribution assembly; 71, material distribution pipe; 72, material distribution box; 73, material distribution valve plate; 74, connecting pipe; 75, pushing cylinder; 76, moving plate; 77, material distribution valve seat; 78, moving rack; 79, moving gear; 70, moving rod; 8, rotating motor; 9, rotating gear; 10, rotating gear ring; 11, driving gear ring; 12, driving motor; 13, driving gear; 14, pressing block; 15, scraping plate; 16, sliding rod; 17, return spring; 18, intake pipe; 19, exhaust pipe; 20, collection tank; Specific embodiments

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Example 1: Refer to Figures 1 - 11 the methane adsorption and recovery device shown in the figure, which includes a plurality of adsorption towers 1. A plurality of partition nets 2 are arranged in the adsorption tower 1. The plurality of partition nets 2 are concentrically arranged. An adsorption material is arranged between two adjacent partition nets 2. The partition net 2 can rotate in the adsorption tower 1. A top isolation plate 3 is arranged at the top of the adsorption tower 1, and a bottom isolation plate 4 is arranged at the bottom of the adsorption tower 1;

[0048] A feed assembly 5 is arranged on the top isolation plate 3. The feed assembly 5 includes a feed pipe 51, a plugging plate 52 and a plurality of switching pipes 53. The plurality of switching pipes 53 are all arranged on the plugging plate 52. The plurality of switching pipes 53 are respectively arranged between two adjacent partition nets 2. The plugging plate 52 can drive the switching pipes 53 to rotate. A feed hole is opened on the top isolation plate 3. When the corresponding switching pipe 53 rotates to the position of the feed hole, the top of the corresponding switching pipe 53 is communicated with the feed pipe 51;

[0049] A plurality of discharge pipes 6 are arranged on the bottom isolation plate 4. The discharge pipes 6 are arranged on the bottom isolation plate 4. The plurality of discharge pipes 6 are arranged between two adjacent partition nets 2.

[0050] The gas is introduced into the adsorption tower 1 at intervals, and the gas passes through the partition net 2. Different adsorption materials in the partition net 2 adsorb methane in turn, and the remaining gas is discharged. Then, the gas is stopped from being introduced into the adsorption tower 1, and negative pressure is drawn to the adsorption tower 1. The methane in the adsorption material is released and collected. When the adsorption material in the partition net 2 fails, the discharge pipe 6 is opened to discharge the adsorption material in the partition net 2. Then, the discharge pipe 6 is closed, and the blocking plate 52 rotates to drive the switching pipe 53 to rotate, so that the switching pipe 53 rotates to the feed hole position, and the top of the switching pipe 53 corresponds to the feed pipe 51. The bottom is located between two adjacent partition nets 2. The adsorption material in the distribution pipe 71 enters the feed pipe 51 and enters the corresponding switching pipe 53 through the feed pipe 51, adding new adsorption material to the corresponding partition net 2; then the sealing plate 52 rotates to drive the other switching pipe 53 to correspond to the feed pipe 51, and the bottom of the other switching pipe 53 corresponds to another partition net 2, and new adsorption material is introduced into the other partition net 2. After adding different adsorption materials to different partition nets 2 in turn, the sealing plate 52 rotates to seal the feed hole, and the replacement of the adsorption material is completed.

[0051] By using multiple partition nets 2, different adsorption materials can be stored between the partition nets 2, so that methane can be adsorbed in sequence, thereby improving the adsorption effect. When the adsorption material between the partition nets 2 becomes invalid, the adsorption material can be quickly discharged and new adsorption material can be added. When adding new adsorption material, different adsorption materials can be added to different partition nets 2 to ensure the adsorption effect of methane, reduce the operation of manual replacement of adsorption materials, make it more convenient to use, save time and labor, reduce the downtime when replacing adsorption materials, and improve adsorption efficiency.

[0052] Depending on the gas composition and content, the device can also adsorb impurity gases and discharge and collect methane gas. This is common knowledge mastered by people in this field.

[0053] Example 2, reference Figures 1 - 11 As shown, the difference from the above embodiment is that a distribution component 7 is provided on the adsorption tower 1, and the distribution component 7 includes a plurality of distribution pipes 71, a distribution box 72, a plurality of distribution valve plates 73 and a connecting pipe 74. The plurality of distribution pipes 71 are fixed and connected to the distribution box 72, the distribution valve plate 73 is arranged in the distribution box 72, and the distribution box 72 is fixed and connected to the feed pipe 51. The distribution valve plate 73 can be rotated from a horizontal state to a vertical state, so that the corresponding distribution pipe 71 is connected to the feed pipe 51. When the distribution valve plate 73 rotates, the connecting pipe 74 can move downward and be mounted on the feed pipe 51 and the corresponding switching pipe 53.

[0054] Several material distribution pipes 71 are connected to different material bins, and different adsorption materials are filled in the material layers.

[0055] After the corresponding switching pipe 53 rotates to the position of the feed pipe 51, the corresponding material distribution valve plate 73 rotates, from the horizontal state to the vertical state. The corresponding material distribution pipe 71 is communicated with the feed pipe 51 through the material distribution box 72. The material distribution valve plate 73 drives the communicating pipe 74 to descend. The communicating pipe 74 is sleeved on the feed pipe 51 and the corresponding switching pipe 53. The corresponding adsorption material in the material distribution pipe 71 falls between the corresponding partition meshes 2 through the material distribution box 72, the feed pipe 51 and the switching pipe 53.

[0056] When different switching pipes 53 rotate to correspond to the feed pipe 51, different material distribution pipes 71 can be synchronously communicated with the feed pipe 51, so that the specified adsorption material can be introduced into different partition meshes 2, and the adsorption materials will not be mixed, ensuring the adsorption efficiency. When the material distribution valve plate 73 rotates to communicate the corresponding material distribution pipe 71 with the feed pipe 51, it can drive the communicating pipe 74 to descend, fixing the feed pipe 51 and the corresponding switching pipe 53, preventing material leakage caused by the displacement of the switching pipe 53 and improving the stability.

[0057] The bottom of the communicating pipe 74 is provided with a flared opening, making it easier for the communicating pipe 74 to be sleeved on the switching pipe 53 and reducing the matching difficulty.

[0058] Example 3, refer to Figures 1 - 11 As shown, different from the above embodiment, the material distribution assembly 7 includes a plurality of push cylinders 75, a moving plate 76, a plurality of material distribution valve seats 77, a moving rack 78, a moving gear 79 and a moving rod 70. The moving rack 78 is fixedly installed at the output end of the push cylinder 75. The moving plate 76 abuts against the bottoms of the plurality of moving racks 78. The material distribution valve seats 77 are fixedly installed in the material distribution box 72. The material distribution valve plate 73 is arranged in the material distribution valve seat 77. The moving gear 79 is fixedly installed on the material distribution valve plate 73. The moving rack 78 meshes with the moving gear 79. The moving rod 70 is fixedly installed on the moving plate 76. The moving rod 70 penetrates through the adsorption tower 1 and is slidably matched with the adsorption tower 1. The communicating pipe 74 is fixedly installed on the moving rod 70. The communicating pipe 74 is sleeved on the feed pipe 51. A protective box is fixedly installed on the adsorption tower 1. The material distribution box 72 is arranged in the protective box. The push cylinder 75 is fixedly installed in the protective box. ]

[0059] The push cylinder 75 drives the moving rack 78 to move. The moving rack 78 drives the moving gear 79 to rotate. The moving gear 79 drives the material distribution valve plate 73 to rotate. The material distribution valve plate 73 rotates to the vertical state in the material distribution valve seat 77, making the corresponding material distribution pipe 71 communicate with the material distribution box 72 and the feed pipe 51. At the same time, the moving rack 78 pushes the moving plate 76 to move. The moving plate 76 drives the moving rod 70 to move downward. The moving rod 70 drives the communicating pipe 74 to move downward. The bottom of the communicating pipe 74 is sleeved on the corresponding switching pipe 53.

[0060] Example 4, refer to Figures 1 - 11As shown, different from the above embodiments, a rotating motor 8 is fixedly installed inside the adsorption tower 1. The output end of the rotating motor 8 is fixedly installed with a rotating gear 9. A rotating cylinder is fixedly installed on the sealing plate 52, and a rotating gear ring 10 is fixedly installed on the rotating cylinder. The rotating gear 9 meshes with the rotating gear ring 10.

[0061] The rotating motor 8 drives the rotating gear 9 to rotate. The rotating gear 9 drives the rotating gear ring 10 to rotate. The rotating gear ring 10 drives the rotating cylinder to rotate. The rotating cylinder drives the sealing plate 52 to rotate. The sealing plate 52 drives the switching pipe 53 to rotate.

[0062] Example 5, refer to Figures 1 - 11 As shown, different from the above embodiments, a driving gear ring 11 is fixedly installed on the partition net 2. A driving motor 12 is fixedly installed on the adsorption tower 1. The output end of the driving motor 12 is fixedly installed with a driving rod. The driving rod penetrates through the adsorption tower 1 and is rotationally connected to the adsorption tower 1. A driving gear 13 is fixedly installed on the driving rod. The driving gear 13 meshes with the driving gear ring 11. A plurality of partition nets 2 are connected by fixing frames.

[0063] The driving motor 12 drives the driving rod to rotate. The driving rod drives the driving gear 13 to rotate. The driving gear 13 drives the driving gear ring 11 to rotate. The driving gear ring 11 drives the partition net 2 to rotate, so that the adsorption material entering the partition net 2 can be evenly distributed in the partition net 2, improving the adsorption capacity.

[0064] Example 6, refer to Figures 1 - 11 As shown, different from the above embodiments, a plurality of discharge pipes 6 are all fixedly installed on the bottom isolation plate 4. An electromagnetic valve is arranged inside the discharge pipe 6. The discharge pipe 6 penetrates through the bottom of the adsorption tower 1 and extends outwards. The top isolation plate 3 is fixedly installed inside the adsorption tower 1 near the top position. The bottom isolation plate 4 is fixedly installed near the bottom position of the adsorption tower 1. The tops of a plurality of partition nets 2 are rotationally connected to the top isolation plate 3. The bottoms of a plurality of partition nets 2 are rotationally connected to the bottom isolation plate 4. A pressing block 14 is fixedly installed inside the adsorption tower 1. A pressing groove is formed in the pressing block 14. The sealing plate 52 is arranged in the pressing groove. The discharge pipe 6 penetrates through the adsorption tower 1 and extends outwards. A scraping plate 15 is fixedly installed between adjacent partition nets 2. The scraping plate 15 abuts against the bottom isolation plate 4.

[0065] When the sealing plate 52 seals the feed hole, the pressing block 14 presses the sealing plate 52 tightly, improving the sealing effect of the feed hole and preventing gas leakage.

[0066] When the adsorption material in the partition net 2 is discharged through the discharge pipe 6, the partition net 2 drives the scraping plate 15 to rotate. The scraping plate 15 can push the adsorption material at the bottom into the discharge pipe 6, improving the discharging effect and preventing the adsorption material from remaining on the bottom isolation plate 4.

[0067] Example 7, refer toFigures 1 - 11 As shown, different from the above embodiments, a sliding rod 16 is fixedly installed on the material distribution box 72 through a fixing block. A moving plate 76 is sleeved on the sliding rod 16 and is in sliding fit with the sliding rod 16. A return spring 17 is fixedly installed on the moving plate 76. One end of the return spring 17 is fixedly installed on the fixing block, and the return spring 17 is sleeved on the sliding rod 16.

[0068] The moving plate 76 moves on the sliding rod 16, making the moving plate 76 more stable and not prone to shaking. After the adsorption material is added, the pushing cylinder 75 is pushed to drive the moving rack 78 to rise. The moving rack 78 drives the moving gear 79 to rotate. The moving gear 79 drives the material distribution valve plate 73 to rotate to the horizontal position. The material distribution valve plate 73 abuts against the material distribution valve seat 77 to close the corresponding material distribution pipe 71. The return spring 17 drives the moving plate 76 to rise and reset. The moving plate 76 drives the moving rod 70 and the connecting pipe 74 to rise and reset.

[0069] Embodiment 8, referring to Figures 1 - 11 As shown, different from the above embodiments, an air inlet pipe 18 is connected to the bottom of the adsorption tower 1, and an air outlet pipe 19 is connected to the top of the adsorption tower 1. A collection tank 20 is connected to the air inlet pipe 18, and a switching valve is arranged in the air inlet pipe 18.

[0070] The gas is introduced into the adsorption tower 1 through the air inlet pipe 18, and the adsorbed gas is discharged through the air outlet pipe 19. After a period of time, the collection tank 20 is connected to the air inlet pipe 18 by switching the valve, and the air outlet pipe 19 is closed by the valve. A vacuum pump is arranged in the collection tank 20, and the adsorption tower 1 is evacuated through the air inlet pipe 18. Methane in the adsorption material is released under negative pressure and enters the collection tank 20 for collection.

[0071] The rotating cylinder is rotatably connected to the air outlet pipe 19.

[0072] A methane adsorption and recovery method uses the above methane adsorption and recovery device, including the following steps:

[0073] The gas is introduced into the adsorption tower 1 at intervals;

[0074] The gas passes through the partition net 2, and different adsorption materials in the partition net 2 adsorb methane in turn, and the remaining gas is discharged;

[0075] After that, the gas is no longer introduced into the adsorption tower 1, and the adsorption tower 1 is evacuated under negative pressure, and methane in the adsorption material is released and collected;

[0076] When the adsorption material in the partition net 2 fails, the discharge pipe 6 is opened to discharge the adsorption material in the partition net 2, and then the discharge pipe 6 is closed;

[0077] The blocking plate 52 rotates to drive the switching pipe 53 to rotate, so that the switching pipe 53 rotates to the position of the feed hole. The top of the switching pipe 53 corresponds to the feed pipe 51, and the bottom is located between two adjacent partition meshes 2;

[0078] The corresponding material distribution valve plate 73 rotates from the horizontal state to the vertical state. The corresponding material distribution pipe 71 is communicated with the feed pipe 51 through the material distribution box 72. The material distribution valve plate 73 drives the communication pipe 74 to descend. The communication pipe 74 is sleeved on the feed pipe 51 and the corresponding switching pipe 53. The adsorption material in the material distribution pipe 71 enters the feed pipe 51 and then enters the corresponding switching pipe 53 through the feed pipe 51, adding new adsorption material into the corresponding partition mesh 2;

[0079] After adding different adsorption materials into different partition meshes 2 in sequence, the blocking plate 52 rotates to block the feed hole, and the replacement of the adsorption material is completed.

[0080] The preparation process of bio-organic fertilizer uses the above methane adsorption and recovery device.

[0081] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Methane adsorption and recovery device, comprising a plurality of adsorption towers, characterized in that: The adsorption tower is provided with a plurality of partition nets, which are concentrically arranged, and an adsorption material is arranged between two adjacent partition nets. The partition nets can rotate in the adsorption tower, and a top isolation plate is provided at the top of the adsorption tower, and a bottom isolation plate is provided at the bottom of the adsorption tower; A feeding assembly is provided on the top isolation plate, and the feeding assembly includes a feeding pipe, a blocking plate and a plurality of switching pipes. The plurality of switching pipes are all provided on the blocking plate, and the plurality of switching pipes are respectively provided between adjacent partition nets. The blocking plate can drive the switching pipe to rotate. A feeding hole is provided on the top isolation plate. When the corresponding switching pipe rotates to the feeding hole position, the top of the corresponding switching pipe is connected to the feeding pipe. A plurality of discharge pipes are provided on the bottom isolation plate. The discharge pipes are provided on the bottom isolation plate, and a plurality of the discharge pipes are provided between adjacent separation nets.

2. The methane adsorption and recovery device according to claim 1, wherein: The adsorption tower is provided with a distribution component, which includes a plurality of distribution pipes, a distribution box, a plurality of distribution valve plates and a connecting pipe. The plurality of distribution pipes are fixed and connected to the distribution box. The distribution valve plate is arranged in the distribution box. The distribution box is fixed and connected to the feed pipe. The distribution valve plate can be rotated from a horizontal state to a vertical state to connect the corresponding distribution pipe with the feed pipe. When the distribution valve plate rotates, the connecting pipe can move downward and be sleeved on the feed pipe and the corresponding switching pipe.

3. The methane adsorption and recovery device according to claim 2, characterized in that: The material distributing assembly includes several pushing cylinders, moving plates, several material distributing valve seats, moving racks, moving gears and moving rods. The moving racks are fixedly installed on the output end of the pushing cylinder, and the moving plates are against the bottoms of several moving racks. The material distributing valve seats are fixedly installed in the material distributing box, and the material distributing valve plate is arranged in the material distributing valve seat. The moving gear is fixedly installed on the material distributing valve plate, and the moving rack is meshed with the moving gear. The moving rod is fixedly installed on the moving plate, and the moving rod passes through the adsorption tower and slides with the adsorption tower. The connecting pipe is fixedly installed on the moving rod, and the connecting pipe is sleeved on the feed pipe. A protective box is fixedly installed on the adsorption tower, and the material distributing box is arranged in the protective box. The pushing cylinder is fixedly installed in the protective box.

4. The methane adsorption and recovery device according to claim 2, wherein: A rotating motor is fixedly installed in the adsorption tower, a rotating gear is fixedly installed at the output end of the rotating motor, a rotating cylinder is fixedly installed on the blocking plate, a rotating ring gear is fixedly installed on the rotating cylinder, and the rotating gear is meshed with the rotating ring gear.

5. The methane adsorption and recovery device according to claim 2, characterized in that: A driving ring gear is fixedly mounted on the separation net, a driving motor is fixedly mounted on the adsorption tower, a driving rod is fixedly mounted on the output end of the driving motor, the driving rod passes through the adsorption tower and is rotatably connected to the adsorption tower, a driving gear is fixedly mounted on the driving rod, the driving gear is meshed with the driving ring gear, and several of the separation nets are connected by a fixing frame.

6. The methane adsorption and recovery device according to claim 2, wherein: A plurality of the discharge pipes are fixedly installed on the bottom isolation plate. An electromagnetic valve is arranged in the discharge pipe. The discharge pipe penetrates through the bottom of the adsorption tower and extends outwards. The top isolation plate is fixedly installed at a position close to the top inside the adsorption tower. The bottom isolation plate is fixedly installed at a position close to the bottom of the adsorption tower. The tops of a plurality of the partition nets are rotatably connected to the top isolation plate. The bottoms of a plurality of the partition nets are rotatably connected to the bottom isolation plate. A pressing block is fixedly installed inside the adsorption tower. A pressing groove is formed in the pressing block. The blocking plate is arranged in the pressing groove. The discharge pipe penetrates through the adsorption tower and extends outwards. A scraping plate is fixedly installed between adjacent partition nets. The scraping plate abuts against the bottom isolation plate.

7. The methane adsorption and recovery device according to claim 3, wherein: A sliding rod is fixedly installed on the material distribution box through a fixing block. The moving plate is sleeved on the sliding rod and is in sliding fit with the sliding rod. A return spring is fixedly installed on the moving plate. One end of the return spring is fixedly installed on the fixing block. The return spring is sleeved on the sliding rod.

8. The methane adsorption and recovery device according to claim 2, characterized in that: An air inlet pipe is connected to the bottom of the adsorption tower. An air outlet pipe is connected to the top of the adsorption tower. A collection tank is connected to the air inlet pipe. A switching valve is arranged in the air inlet pipe.

9. A method for methane adsorption and recovery, which uses the methane adsorption and recovery device according to any one of claims 2-8, characterized in that: Including the following steps: The gas is introduced into the adsorption tower at intervals. The gas passes through the partition net. Different adsorption materials in the partition net adsorb methane in sequence, and the remaining gas is discharged. After that, the gas introduction into the adsorption tower is stopped, and the adsorption tower is evacuated. The methane in the adsorption material is released and collected. When the adsorption material in the partition net fails, the discharge pipe is opened to discharge the adsorption material in the partition net, and then the discharge pipe is closed. The rotation of the blocking plate drives the rotation of the switching pipe, so that the switching pipe rotates to the position of the feed hole. The top of the switching pipe corresponds to the feed pipe, and the bottom is located between two adjacent partition nets. The corresponding material distribution valve plate rotates from a horizontal state to a vertical state. The corresponding material distribution pipe is communicated with the feed pipe through the material distribution box. The material distribution valve plate drives the communication pipe to descend. The communication pipe is sleeved on the feed pipe and the corresponding switching pipe. The adsorption material in the material distribution pipe enters the feed pipe and then enters the corresponding switching pipe through the feed pipe to add new adsorption material to the corresponding partition net. After adding different adsorption materials into different partition nets in sequence, the blocking plate rotates to block the feed hole, and the replacement of the adsorption material is completed.

10. Preparation process of biological organic fertilizer, characterized in that: The methane adsorption and recovery device according to any one of claims 2-8 is used.

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