A tail gas treatment device and treatment method for 2-methylfuran catalytic reaction

Abstract

The invention discloses a tail gas treatment device for 2-methylfuran catalytic reaction, including a condenser for condensing and recovering tail gas and a flow guide component for limiting the flow direction of tail gas at one end thereof, and also including an adsorption component for adsorbing and purifying tail gas, wherein the flow guide component is interconnected with the condenser, and the flow guide component is penetrated and fixedly connected with the adsorption component. The present invention automatically replaces the saturated adsorbent while adsorbing and purifying the tail gas by arranging the adsorption component; the flow guide component is arranged to automatically shunt the tail gas when the adsorbent replacement operation is performed, thereby avoiding stopping the purification work of the device when the replacement operation is performed, and further improving the working efficiency of the device; the cleaning plate is arranged to automatically clean the inner wall of the adsorption component when the adsorbent replacement operation is performed, ensuring that there is no residual old adsorbent or impurities to improve the working quality of the adsorbent replacement operation.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas treatment, in particular to a tail gas treatment device and a treatment method for 2-methylfuran catalytic reaction. Background Art

[0002] 2-Methylfuran is an organic compound belonging to the furan class of compounds. 2-Methylfuran can participate in different chemical reactions under a variety of catalytic conditions. The reaction process varies depending on the reaction conditions and catalysts, including hydrogenation, oxidation, cross-coupling and alkylation. In the catalytic reaction of 2-methylfuran, tail gas treatment is an important part of ensuring environmental safety and industrial hygiene. The tail gas may contain unreacted raw materials, volatile organic compounds, by-products and harmful gases.

[0003] In the prior art, the tail gas treatment of 2-methylfuran mainly includes a condensation-adsorption-catalytic combustion combined process. This combined process can treat tail gas of various components and concentrations, but the adsorbents such as activated carbon need to be replaced or regenerated regularly. In the prior art, manual replacement is usually adopted, which increases the maintenance cost and makes the overall process complicated and the operating cost is also high. Another biofilter-catalytic combustion combined process has low operating energy consumption and low overall operating cost. However, the processing speed of the biofilter is slow, which is not suitable for high-concentration and large-flow tail gas treatment and has high requirements for environmental conditions such as temperature and humidity.

[0004] After searching, the Chinese patent with patent number CN115337752B includes a condensing box, a main adsorption box and a storage tank. The condensing box is connected to the main adsorption box, and is connected to a tail gas pipe and a liquid outlet pipe. A condensing component is arranged in the condensing box, and the liquid outlet pipe is connected to the storage tank. The main adsorption box is connected to an exhaust pipe, a steam inlet pipe, and a steam outlet pipe. An adsorption component is arranged in the main adsorption box, and the steam pipe is connected to a processing component.

[0005] The device described in this case can be used for the treatment of tail gas used in the catalytic reaction of 2-methylfuran and complies with the condensation-adsorption combined process. However, this case lacks a step for replacing the adsorbent, and the adsorbent still needs to be replaced manually, resulting in low working efficiency of the device. Summary of the invention

[0006] The object of the present invention is to provide a tail gas treatment device and a treatment method for 2-methylfuran catalytic reaction, which has the advantages of automatic replacement and synchronous diversion, and solves the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a tail gas treatment device for 2-methylfuran catalytic reaction, comprising a condenser for condensing and recovering the tail gas and a guide component at one end of which limits the flow direction of the tail gas, and also comprising an adsorption component for adsorbing and purifying the tail gas, wherein the guide component is interconnected with the condenser, and the guide component penetrates and is fixedly connected to the adsorption component.

[0008] Preferably, the interior of the condenser is horizontally penetrated by and fixedly connected with a treatment tube, the interior of one end of the treatment tube is fixedly connected with a filter screen, the outer contour of the middle section of the treatment tube is penetrated by and fixedly connected with a drain pipe, the outer contour of the bottom end of the drain pipe is penetrated by and fixedly connected with a storage tank, and the end of the treatment tube away from the filter screen is fixedly connected to the guide assembly.

[0009] Preferably, the flow guide assembly includes a flow guide pipe 1, the flow guide pipe 1 is fixedly connected to the end of the treatment pipe away from the filter screen, the top of the flow guide pipe 1 is penetrated and fixedly connected with a flow guide pipe 2, the ends of the flow guide pipe 1 and the flow guide pipe 2 away from the condenser are penetrated and fixedly connected to the adsorption assembly, the flow guide assembly also includes an air outlet pipe 1, the bottom end of the air outlet pipe 1 is penetrated and fixedly connected with the air outlet pipe 2, the ends of the air outlet pipe 1 and the air outlet pipe 2 close to the condenser are penetrated and fixedly connected to the adsorption assembly, the end of the air outlet pipe 2 away from the condenser is penetrated and fixedly connected with a combustion reactor, and the end of the combustion reactor away from the air outlet pipe 2 is penetrated and fixedly connected with an exhaust pipe;

[0010] The flow guide assembly also includes a blocking ring, which is provided with four and is respectively fixedly connected to the inner contours of flow guide pipe 1, flow guide pipe 2, air outlet pipe 1 and air outlet pipe 2, and the blocking ring is connected to a limiting plug on a fixed axis rotation on one side close to the condenser.

[0011] Preferably, the adsorption component includes an adsorption tower, the axis center of the bottom end of the adsorption tower is penetrated and connected to a power shaft for limited rotation, an annular groove is opened at the bottom end of the adsorption tower, a blocking plate is fixedly connected to the outer contour of the middle section of the power shaft, and the blocking plate is limitedly slidably connected to the inner contour of the annular groove, a transmission gear is penetrated and fixedly connected to the top end of the power shaft, and a replacement component for automatically replacing the adsorbent is penetrated at the axis center of the top end of the adsorption tower.

[0012] Preferably, the adsorption tower is driven by an external motor and is fixedly connected to the output shaft of the motor, and the motor of the adsorption tower is configured as a pressure-triggered type.

[0013] Preferably, the replacement component includes a limiting roller, the limiting roller passes through and is limitedly slidably connected to the axis center of the top of the adsorption tower, the outer contour of the middle section of the limiting roller passes through and is limitedly rotatably connected to an adsorption net, a return spring is fixedly connected between the outer contour of the top of the adsorption net and the inner contour of the top of the adsorption tower, the inner contour of the adsorption net is limitedly rotatably connected to a cleaning plate, the cleaning plate is fixedly connected to the outer contour of the middle section of the limiting roller, the outer contour of the middle section of the adsorption net is fixedly connected to a positioning ring, an annular groove 2 is opened at the bottom end of the adsorption net, the bottom end of the limiting roller is fixedly connected to an internal gear, the internal gear is meshed and transmission connected to the transmission gear, the outer contour of the bottom end of the adsorption net is fixedly connected to a blocking plate 2, and the blocking plate 2 is limitedly slidably connected to the inner contour of the annular groove 2.

[0014] Preferably, the blocking plate 2 and the blocking plate 1 are configured to be semicircular, the portion of the cleaning plate that contacts the inner contour of the adsorption net is made of flexible material, the surface of the adsorption net is configured to be a porous mesh structure, and the interior of the adsorption net is filled with adsorbent.

[0015] Preferably, a method for treating tail gas for 2-methylfuran catalytic reaction comprises the following steps:

[0016] S1. Pretreatment: The tail gas to be purified is passed into the treatment pipe, and the tail gas passes through the filter screen. The filter screen intercepts the larger particles and impurities in the tail gas to ensure that the tail gas does not contain solid particles, so as not to affect the subsequent condensation and adsorption effects;

[0017] S2. Condensation recovery: The filtered tail gas passes through the condenser, and the tail gas is cooled by refrigerant or cooling water inside the condenser to condense the high-boiling point organic matter and water vapor into liquid. The condensed liquid flows into the storage tank through the drain pipe and can be reused or processed after recovery;

[0018] S3, adsorption purification: the condensed tail gas enters the adsorption tower and the limiting roller through the guide pipe 1 and the guide pipe 2, the residual organic pollutants in the tail gas are adsorbed by the adsorbent set inside the limiting roller, and the purified tail gas is discharged from the outlet pipe 1 and the outlet pipe 2;

[0019] S4. When the adsorbent is saturated, the adsorbent inside the adsorption net is automatically replaced by using the structure of the power shaft and the limit roller, thereby saving labor and improving the working efficiency of the device;

[0020] S5. The tail gas after adsorption purification enters the combustion reactor through the outlet pipe 2 and is heated to the temperature required for catalytic combustion. Then, the organic matter is oxidized into carbon dioxide and water under the action of the catalyst; the tail gas after the reaction is discharged through the exhaust pipe.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention provides an adsorption component to adsorb and purify the tail gas while automatically replacing the saturated adsorbent, thereby effectively reducing the maintenance cost of the equipment.

[0023] 2. The present invention provides a flow guide component to automatically divert the tail gas when the adsorbent is replaced, thereby avoiding the device from stopping purification work when the replacement operation is in progress, and further improving the working efficiency of the device.

[0024] 3. The present invention provides a cleaning plate to automatically clean the inner wall of the adsorption component when the adsorbent is replaced, ensuring that there is no residual old adsorbent or impurities to improve the work quality of the adsorbent replacement operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0026] Figure 2 It is a cross-sectional view of the main structure of the present invention;

[0027] Figure 3 It is a cross-sectional view of the condenser structure of the present invention;

[0028] Figure 4 It is a cross-sectional view of the structure of the flow guide component of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the limiting mechanism of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the adsorption component of the present invention;

[0031] Figure 7 It is a cross-sectional view of the replacement component structure of the present invention;

[0032] Figure 8 This is an exploded schematic diagram of the replacement component structure of the present invention;

[0033] Fig. 9 It is the overall workflow diagram of the present invention.

[0034] In the figure: 1. condenser; 11. treatment pipe; 12. filter screen; 13. drain pipe; 14. storage tank; 2. guide pipe 1; 21. guide pipe 2; 22. outlet pipe 1; 23. outlet pipe 2; 24. combustion reactor; 25. exhaust pipe; 3. plugging ring; 31. limit plug; 4. adsorption tower; 41. power shaft; 42. plugging plate 1; 43. transmission gear; 44. annular groove 1; 5. limit roller; 51. adsorption net; 52. reset spring; 53. cleaning plate; 54. positioning ring; 55. annular groove 2; 56. internal gear; 57. plugging plate 2. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0036] See also Figures 1 to 9 The present invention provides a technical solution: a tail gas treatment device for 2-methylfuran catalytic reaction, comprising a condenser 1 for condensing and recovering the tail gas and a flow guide component at one end of which limits the flow direction of the tail gas, and also comprising an adsorption component for adsorbing and purifying the tail gas, wherein the flow guide component is interconnected with the condenser 1, and the flow guide component penetrates and is fixedly connected to the adsorption component.

[0037] The interior of the condenser 1 is horizontally penetrated by and fixedly connected with a treatment tube 11, a filter screen 12 is fixedly connected to the interior of one end of the treatment tube 11, a drain pipe 13 is penetrated by and fixedly connected to the outer contour of the middle section of the treatment tube 11, a storage tank 14 is penetrated by and fixedly connected to the outer contour of the bottom end of the drain pipe 13, and the end of the treatment tube 11 away from the filter screen 12 is fixedly connected to the guide assembly.

[0038] In this device, the structure of the condenser 1 is utilized to condense and recover the exhaust gas. The condenser 1 is specifically a tubular condenser or a plate condenser with a specific structure. The interior of the condenser 1 is provided with a circulating cooling water system that is evenly wound around the outer contour of the treatment tube 11. The circulating exhaust gas temperature is reduced to below the dew point of the organic matter by utilizing the condensed water, so that the organic matter and water vapor in the exhaust gas are liquefied in the condenser 1 to form a condensate, which is collected into the storage tank 14 through the drain pipe 13 for recovery.

[0039] It should be noted that when the exhaust gas initially enters the treatment pipe 11, the exhaust gas first contacts the filter 12. At this time, the filter 12 intercepts solid particles and impurities in the exhaust gas to prevent subsequent equipment from being blocked or damaged. Example 2

[0040] See also Figures 4 to 5, this embodiment further illustrates Example 1, the flow guide assembly includes a flow guide pipe 2, the flow guide pipe 2 is fixedly connected to the end of the processing pipe 11 away from the filter 12, the top of the flow guide pipe 2 is penetrated and fixedly connected with a flow guide pipe 21, the ends of the flow guide pipe 2 and the flow guide pipe 21 away from the condenser 1 are penetrated and fixedly connected to the adsorption assembly, the flow guide assembly also includes an outlet pipe 22, the bottom end of the outlet pipe 22 is penetrated and fixedly connected with an outlet pipe 23, the ends of the outlet pipe 22 and the outlet pipe 23 close to the condenser 1 are penetrated and fixedly connected to the adsorption assembly, the end of the outlet pipe 23 away from the condenser 1 is penetrated and fixedly connected with a combustion reactor 24, and the end of the combustion reactor 24 away from the outlet pipe 23 is penetrated and fixedly connected with an exhaust pipe 25;

[0041] The flow guide assembly also includes a blocking ring 3, four of which are provided and fixedly connected to the inner contours of the flow guide pipe 1 2, the flow guide pipe 2 21, the air outlet pipe 1 22 and the air outlet pipe 2 23 respectively. The blocking ring 3 is connected to a limiting plug 31 on the side close to the condenser 1 for fixed-axis rotation.

[0042] After the condensation recovery process of Example 1 is completed, the condensed exhaust gas enters the adsorption tower 4 through the guide pipe 1 2 and the guide pipe 2 21 and fully contacts with the adsorbent inside the adsorption net 51. The organic pollutants in the exhaust gas are adsorbed by the adsorbent, and the purified exhaust gas is discharged from the outlet pipe 1 22 and the outlet pipe 2 23.

[0043] It should be noted that, since the limit plug 31 is connected to the side of the blocking ring 3 close to the condenser 1 by fixed-axis rotation, along with the pressure change inside the adsorption tower 4, the deflection angles of the limit plugs 31 inside the guide tube 2, the guide tube 21, the outlet pipe 1 22 and the outlet pipe 2 23 are different, thereby realizing unidirectional conduction of the guide tube 2, the guide tube 21, the outlet pipe 1 22 and the outlet pipe 2 23; when the limit roller 5 descends along the adsorption tower 4, the pressure in the lower half of the adsorption tower 4 increases, and the pressure in the upper half decreases. At this time, under the action of the blocking ring 3 and the limit plug 31, the guide tube 2 and the outlet pipe 1 22 are connected, while the guide tube 2 21 and the outlet pipe 2 23 are closed; when the limit roller 5 rises along the adsorption tower 4, the pressure in the lower half of the adsorption tower 4 decreases, and the pressure in the upper half increases. At this time, the guide tube 2 and the outlet pipe 1 22 are closed, while the guide tube 2 21 and the outlet pipe 2 23 are connected.

[0044] The tail gas after adsorption purification enters the combustion reactor 24 through the outlet pipe 23, and the tail gas is heated to the temperature required for the catalytic combustion reaction in the combustion reactor 24. Under the action of the catalyst, the organic matter undergoes an oxidation reaction at a lower temperature to generate carbon dioxide and water; then the tail gas after catalytic combustion is discharged into the atmosphere through the exhaust pipe 25. Example 3

[0045] See also Figure 6 This embodiment further explains Example 2, the adsorption component includes an adsorption tower 4, the axis center of the bottom end of the adsorption tower 4 is penetrated and connected to a power shaft 41 for limited rotation, the bottom end of the adsorption tower 4 is provided with an annular groove 44, a blocking plate 42 is fixedly connected to the outer contour of the middle section of the power shaft 41, the blocking plate 42 is limitedly slidably connected to the inner contour of the annular groove 44, the top end of the power shaft 41 is penetrated and fixedly connected with a transmission gear 43, the axis center of the top end of the adsorption tower 4 is penetrated and provided with a replacement component for automatically replacing the adsorbent.

[0046] The adsorption tower 4 is driven by an external motor and is fixedly connected to the output shaft of the motor. The motor of the adsorption tower 4 is configured as a pressure-triggered type.

[0047] During the process of Example 2, as the adsorbent inside the adsorption net 51 continuously purifies the exhaust gas, the organic matter in the exhaust gas combines with the adsorbent, causing the mass of the adsorbent to gradually increase. The increase in the mass of the adsorbent causes the adsorption net 51 to drive the limiting roller 5 to begin to decline under the action of gravity. As the adsorbent reaches saturation, the internal gear 56 at the bottom of the limiting roller 5 contacts and meshes with the transmission gear 43. At this time, the pressure of the power shaft 41 increases, causing the motor inside the power shaft 41 to start and drive the power shaft 41 to rotate. The power shaft 41 further drives the blocking plate 42, the transmission gear 43 and the limiting roller 5 to rotate synchronously.

[0048] During this process, the blocking plate 1 42 is gradually rolled up inside the annular groove 1 44, so that a hole appears at the bottom of the adsorption tower 4, and the rotation of the limiting roller 5 synchronously drives the cleaning plate 53, the internal gear 56 and the blocking plate 2 57 to rotate synchronously, so that the blocking plate 2 57 is gradually rolled up inside the annular groove 2 55, and a hole also appears at the bottom of the adsorption net 51; the rotation of the cleaning plate 53 fully stirs the adsorbent inside the adsorption net 51, and the part of the cleaning plate 53 in contact with the inner contour of the adsorption net 51 is used to scrape and clean the inside of the adsorption net 51, thereby ensuring that there is no residual old adsorbent or impurities, and avoiding scaling of the adsorbent due to a humid environment; at the same time, the adsorbent that has fallen off completely falls out of the adsorption tower 4 through the adsorption net 51 and the hole at the bottom of the adsorption tower 4 under the action of gravity, and at this time, new adsorbent is added to the inside of the adsorption net 51 through the hole of the adsorption tower 4 and the adsorption net 51, thereby completing the replacement of the adsorbent.

[0049] It should be noted that the single rotation angle of the power shaft 41 should be less than one hundred and eighty degrees, so that holes appear at the bottom of the adsorption tower 4 and the adsorption net 51. At the same time, the cooperation between the blocking plate 1 42 and the blocking plate 2 57 and the annular groove 1 44 and the annular groove 2 55 can fix the height of the adsorption net 51 at the bottom of the inner contour of the adsorption tower 4, thereby avoiding the abnormal rise of the adsorption net 51 and making the replacement operation impossible.

[0050] Example 4

[0051] See also Figures 7 and 8 , this embodiment further explains Example 3, the replacement component includes a limiting roller 5, the limiting roller 5 passes through and is limitedly slidably connected to the axis of the top of the adsorption tower 4, the outer contour of the middle section of the limiting roller 5 passes through and is limitedly rotatably connected to an adsorption net 51, a reset spring 52 is fixedly connected between the outer contour of the top of the adsorption net 51 and the inner contour of the top of the adsorption tower 4, the inner contour of the adsorption net 51 is upper limit rotatably connected to a cleaning plate 53, the cleaning plate 53 is fixedly connected to the outer contour of the middle section of the limiting roller 5, the outer contour of the middle section of the adsorption net 51 is fixedly connected to a positioning ring 54, the bottom end of the adsorption net 51 is provided with an annular groove 2 55, the bottom end of the limiting roller 5 is fixedly connected to an internal gear 56, the internal gear 56 is meshed and transmission-connected with the transmission gear 43, the outer contour of the bottom end of the adsorption net 51 is fixedly connected to a blocking plate 2 57, and the blocking plate 2 57 is limitedly slidably connected to the inner contour of the annular groove 2 55.

[0052] The blocking plate 2 57 and the blocking plate 1 42 are configured to be semicircular, the portion of the cleaning plate 53 that contacts the inner contour of the adsorption net 51 is made of flexible material, the surface of the adsorption net 51 is configured to be a porous mesh structure, and the interior of the adsorption net 51 is filled with an adsorbent.

[0053] In the description process of Example 4, after the adsorbent replacement operation is completed, the power shaft 41 further rotates so that the limiting relationship between the annular groove 44 and the blocking plate 42 and the annular groove 55 and the blocking plate 57 is released. At this time, the adsorption net 51 quickly rebounds to the top of the adsorption tower 4 under the action of the reset spring 52, thereby performing the adsorption operation again.

[0054] Example 5

[0055] See also Fig. 9 This implementation further explains Example 4.

[0056] A method for treating tail gas used in a 2-methylfuran catalytic reaction comprises the following steps:

[0057] S1. Pretreatment: The tail gas to be purified is passed into the treatment pipe 11, and the tail gas passes through the filter 12. The filter 12 intercepts the larger particles and impurities in the tail gas to ensure that the tail gas does not contain solid particles, so as not to affect the subsequent condensation and adsorption effects;

[0058] S2, condensation recovery: the filtered tail gas passes through the condenser 1, and the tail gas is cooled by refrigerant or cooling water inside the condenser 1, and the high boiling point organic matter and water vapor are condensed into liquid. The condensed liquid flows into the storage tank 14 through the drain pipe 13, and can be reused or processed after recovery;

[0059] S3, adsorption purification: the condensed tail gas enters the adsorption tower 4 and the limiting roller 5 through the guide pipe 1 2 and the guide pipe 2 21, the residual organic pollutants in the tail gas are adsorbed by the adsorbent arranged inside the limiting roller 5, and the purified tail gas is discharged from the outlet pipe 1 22 and the outlet pipe 2 23;

[0060] S4. When the adsorbent is saturated, the adsorbent inside the adsorption net 51 is automatically replaced by utilizing the structure of the power shaft 41 and the limiting roller 5, thereby saving labor and improving the working efficiency of the device;

[0061] S5. The tail gas after adsorption purification enters the combustion reactor 24 through the outlet pipe 23 and is heated to the temperature required for catalytic combustion. Then, the organic matter is oxidized into carbon dioxide and water under the action of the catalyst; the tail gas after the reaction is discharged through the exhaust pipe 25.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tail gas treatment device for 2-methylfuran catalytic reaction, comprising a condenser (1) for condensing and recovering tail gas and a flow guide component at one end thereof for limiting the direction of tail gas flow, characterized in that: It also includes an adsorption component for adsorbing and purifying the tail gas, the flow guide component and the condenser (1) are in communication with each other, and the flow guide component penetrates and is fixedly connected to the adsorption component; The flow guide assembly comprises a flow guide pipe 1 (2), wherein the flow guide pipe 1 (2) is fixedly connected to an end of the treatment pipe (11) away from the filter screen (12), the top end of the flow guide pipe 1 (2) is penetrated and fixedly connected to a flow guide pipe 2 (21), the ends of the flow guide pipe 1 (2) and the flow guide pipe 2 (21) away from the condenser (1) are penetrated and fixedly connected to the adsorption assembly, the flow guide assembly further comprises an air outlet pipe 1 (22), the bottom end of the air outlet pipe 1 (22) is penetrated and fixedly connected to an air outlet pipe 2 (23), the ends of the air outlet pipe 1 (22) and the air outlet pipe 2 (23) near the condenser (1) are penetrated and fixedly connected to the adsorption assembly, the end of the air outlet pipe 2 (23) away from the condenser (1) is penetrated and fixedly connected to a combustion reactor (24), and the end of the combustion reactor (24) away from the air outlet pipe 2 (23) is penetrated and fixedly connected to an exhaust pipe (25); The flow guide assembly further comprises a blocking ring (3), wherein four blocking rings (3) are provided and are respectively fixedly connected to the inner contours of the flow guide pipe 1 (2), the flow guide pipe 2 (21), the air outlet pipe 1 (22) and the air outlet pipe 2 (23), and the blocking ring (3) is connected to a limiting plug (31) on a fixed axis rotationally on a side close to the condenser (1); The adsorption assembly comprises an adsorption tower (4), the axis center of the bottom end of the adsorption tower (4) is penetrated by a power shaft (41) and is connected to it in a limited rotational manner, the bottom end of the adsorption tower (4) is provided with an annular groove (44), a blocking plate (42) is fixedly connected to the outer contour of the middle section of the power shaft (41), the blocking plate (42) is limitedly slidably connected to the inner contour of the annular groove (44), the top end of the power shaft (41) is penetrated by a transmission gear (43) and is fixedly connected, and the axis center of the top end of the adsorption tower (4) is penetrated by a replacement assembly for automatically replacing the adsorbent; The replacement component comprises a limiting roller (5), the limiting roller (5) passes through and is slidably connected to the axis of the top of the adsorption tower (4), the outer contour of the middle section of the limiting roller (5) passes through and is rotatably connected to an adsorption net (51), a return spring (52) is fixedly connected between the outer contour of the top of the adsorption net (51) and the inner contour of the top of the adsorption tower (4), the inner contour of the adsorption net (51) is rotatably connected to a cleaning plate (53), the cleaning plate (53) is fixedly connected to the outer contour of the middle section of the limiting roller (5), the outer contour of the middle section of the adsorption net (51) is fixedly connected to a positioning ring (54), and the bottom end of the adsorption net (51) is provided with an annular groove 2 (55).

2. A tail gas treatment device for 2-methylfuran catalytic reaction according to claim 1, characterized in that: The interior of the condenser (1) is penetrated transversely and fixedly connected with a treatment pipe (11); a filter screen (12) is fixedly connected to the interior of one end of the treatment pipe (11); a drain pipe (13) is penetrated and fixedly connected to the outer contour of the middle section of the treatment pipe (11); a storage tank (14) is penetrated and fixedly connected to the outer contour of the bottom end of the drain pipe (13); and one end of the treatment pipe (11) away from the filter screen (12) is fixedly connected to a flow guide component.

3. A tail gas treatment device for 2-methylfuran catalytic reaction according to claim 1, characterized in that: The bottom end of the limiting roller (5) is fixedly connected to an internal gear (56), and the internal gear (56) is meshed with and transmission-connected to the transmission gear (43).

4. A tail gas treatment device for 2-methylfuran catalytic reaction according to claim 1, characterized in that: The adsorption tower (4) is driven by an external motor and is fixedly connected to the output shaft of the motor. The motor of the adsorption tower (4) is configured as a pressure-triggered type.

5. A tail gas treatment device for 2-methylfuran catalytic reaction according to claim 3, characterized in that: A second blocking plate (57) is fixedly connected to the outer contour of the bottom end of the adsorption net (51), and the second blocking plate (57) is limitedly slidably connected to the inner contour of the second annular groove (55).

6. A tail gas treatment device for 2-methylfuran catalytic reaction according to claim 5, characterized in that: The blocking plate 2 (57) and the blocking plate 1 (42) are arranged in a semicircular shape, the portion of the cleaning plate (53) in contact with the inner contour of the adsorption net (51) is made of a flexible material, the surface of the adsorption net (51) is arranged in a porous mesh structure, and the interior of the adsorption net (51) is filled with an adsorbent.

7. A method for treating tail gas used in 2-methylfuran catalytic reaction, applied to a tail gas treatment device used in 2-methylfuran catalytic reaction according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, pretreatment: the exhaust gas to be purified is passed into the treatment pipe (11), and the exhaust gas passes through the filter (12), and the filter (12) intercepts larger particles and impurities in the exhaust gas to ensure that the exhaust gas does not contain solid particles, so as not to affect the subsequent condensation and adsorption effects; S2, condensation recovery: the filtered tail gas passes through the condenser (1), and the tail gas is cooled by a refrigerant or cooling water inside the condenser (1), and the high-boiling point organic matter and water vapor are condensed into liquid. The condensed liquid flows into the storage tank (14) through the drain pipe (13), and can be reused or processed after recovery; S3, adsorption purification: the condensed exhaust gas enters the adsorption tower (4) and the limiting roller (5) through the guide pipe 1 (2) and the guide pipe 2 (21), the residual organic pollutants in the exhaust gas are adsorbed by the adsorbent provided inside the limiting roller (5), and the purified exhaust gas is discharged from the outlet pipe 1 (22) and the outlet pipe 2 (23); S4. When the adsorbent is saturated, the adsorbent inside the adsorption net (51) is automatically replaced by utilizing the structural coordination of the power shaft (41) and the limiting roller (5), thereby saving labor and improving the working efficiency of the device; S5. The tail gas after adsorption purification enters the combustion reactor (24) through the second outlet pipe (23) and is heated to the temperature required for catalytic combustion. Then, the organic matter is oxidized into carbon dioxide and water under the action of the catalyst. The tail gas after the reaction is discharged through the exhaust pipe (25).

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