An activated carbon heating device with flue gas recovery

Abstract

The present invention provides an activated carbon heating device capable of flue gas recovery, which comprises a frame, a heating mechanism, a lifting mechanism, a driving mechanism and a controller. A feed pipe is arranged at the top of the frame. One end of the feed pipe is connected with an end cover. A temperature sensor is arranged on the side surface of the end cover. The end cover is rotatably connected with an outer cylinder and an inner cylinder. The inner cylinder is provided with a plurality of ventilation holes and a plurality of first through holes are uniformly arranged along the radial direction at one end. A plurality of fourth through holes are uniformly arranged along the radial direction at one end of the outer cylinder. The first through holes and the fourth through holes are aligned in pairs. An outlet ring is rotatably arranged on the outer cylinder and the inner cylinder. A cavity is arranged in the outlet ring. A plurality of second through holes are uniformly arranged along the radial direction on the inner ring thereof, and a plurality of third through holes are uniformly arranged along the radial direction on the outer ring thereof. The second through holes and the third through holes are staggered with each other in the circumferential direction. The driving mechanism controls the rotation of the outer cylinder, and the discharge through holes are alternately aligned, so that the present invention can not only discharge materials continuously, but also avoid oxygen from mixing into the activation chamber to cause an oxidation reaction to increase the temperature of the activation furnace, thereby ensuring the activation quality of carbide.

Description

Technical Field

[0001] The present invention relates to the technical field of activated carbon production, and particularly relates to an activated carbon heating device capable of flue gas recovery. Background Art

[0002] Today, with the increasing emphasis on environmental protection and sustainable development, activated carbon is an important adsorption material. Due to its high porosity and specific surface area, activated carbon can effectively adsorb organic solvents in water, toxic and harmful substances in gas, as well as decolorize and deodorize, and is widely used in the fields of environmental protection and industrial purification.

[0003] The production process of activated carbon usually includes links such as crushing, carbonization, activation, and post-treatment of raw materials. The raw materials are mostly carbon-rich organic substances, such as wood, fruit shells, coal, etc. After high-temperature carbonization, these raw materials are transformed into carbon-rich carbides, and then through activation treatment, a rich pore structure is formed inside, thereby improving the adsorption performance. When the carbide contacts steam at high temperature, water vapor will react with the carbon atoms on the surface of the carbon, resulting in surface erosion. This punctate erosion will form countless fine pores on the surface of the carbon.

[0004] During the heating process of the activated carbon heating device, a large amount of flue gas will be generated. If the high-temperature flue gas is directly discharged into the atmosphere, it will not only cause waste of energy, but also have a negative impact on the surrounding environment. Therefore, a heat exchanger is generally set up for energy recovery. In the prior art, when the carbide is subjected to activation treatment, a specific temperature needs to be maintained. However, when the activated carbon is discharged from the activation furnace, external air will enter the activation furnace, resulting in an oxidation reaction in the activation furnace, increasing the temperature of the activation furnace and affecting the activation quality of the carbide. Summary of the Invention

[0005] In view of this, the present invention provides an activated carbon heating device capable of flue gas recovery. By the mutual rotation of the discharge ring, the inner cylinder, and the outer cylinder, the discharge channel is alternately connected and closed, avoiding oxidation reaction caused by oxygen mixing into the activation chamber when the activated carbon is discharged, thereby increasing the temperature of the activation furnace and ensuring the activation quality of the carbide.

[0006] The technical solution of the present invention is realized as follows:

[0007] An activated carbon heating device with flue gas recovery, comprising a frame, a heating mechanism, a lifting mechanism, a driving mechanism and a controller. A feed pipe is provided at the top of the frame. One end of the feed pipe is connected to the frame, and the other end is fixedly provided with an end cover. A temperature sensor is provided on the side of the end cover. The end cover is rotatably connected with an outer cylinder and an inner cylinder. The inner cylinder is located inside the outer cylinder. The inner cylinder is provided with a plurality of ventilation holes, and a plurality of first through holes are evenly distributed along the radial direction at one end away from the end cover. A plurality of fourth through holes are evenly distributed along the radial direction at one end of the outer cylinder. The first through holes and the fourth through holes are aligned one by one. A plurality of connecting rods are provided between the outer wall of the inner cylinder and the inner wall of the outer cylinder. An outlet ring is rotatably provided at one end of the outer cylinder and the inner cylinder away from the end cover. The outlet ring and the end cover enclose the inner cylinder and the outer cylinder into a closed space. A cavity is provided inside the outlet ring. A plurality of second through holes are evenly distributed along the radial direction on its inner circle, and a plurality of third through holes are evenly distributed along the radial direction on its outer circle. The second through holes and the third through holes are staggered in the circumferential direction. A blade part is provided on the inner wall of the second through hole. The inner cylinder is connected with a flue gas recovery mechanism through a smoke exhaust pipe. The flue gas recovery mechanism is arranged on the top surface of the frame. The heating mechanism is arranged on the top surface of the frame and is communicated with the outer cylinder. Both ends of the outer cylinder are respectively connected with the lifting mechanism. The lifting mechanism is arranged on the top of the frame. A driving mechanism is also provided on the outer cylinder. The driving mechanism is used to drive the outer cylinder to rotate. The controller is arranged on the top surface of the frame and is electrically connected with the heating mechanism, the lifting mechanism, the driving mechanism and the flue gas recovery mechanism.

[0008] Preferably, the lifting mechanism includes bearings, hydraulic rods, U-shaped frames and rotating shafts. The bearings are respectively sleeved at both ends of the outer cylinder. The hydraulic rods are oppositely arranged on the top of the frame. One hydraulic rod is fixedly connected with the frame, and the other is hinged to the top of the frame. Their telescopic ends are both connected with U-shaped frames. The two ends of the bottom of the U-shaped frame are rotatably connected to the bearings through rotating shafts.

[0009] Preferably, the driving mechanism includes a motor, a gear and a toothed ring. The motor is arranged on the top of the bearing, and its output shaft is drivingly connected to the gear. The gear meshes with the toothed ring. The toothed ring is sleeved on the outer cylinder.

[0010] Preferably, the flue gas recovery mechanism includes a heat exchanger, heat exchange pipes, a water inlet pipe, a water valve and a connecting pipe. One end of the inner cylinder is communicated with the heat exchanger through a smoke exhaust pipe. The heat exchanger is arranged on the top surface of the frame. The heat exchange pipes are spirally arranged inside the heat exchanger. One end of the heat exchange pipes is connected to the water inlet pipe, and the other end is connected to the connecting pipe. The connecting pipe is connected to the heating mechanism. The water valve is arranged on the water inlet pipe.

[0011] Preferably, the heating mechanism includes a steam heater, an air inlet pipe and an air inlet valve. The steam heater is arranged on the top surface of the frame. The steam heater is connected to the end cover through the air inlet pipe. One end of the air inlet pipe passes through the end cover and is communicated with the inside of the outer cylinder.

[0012] Preferably, the inner wall of the inner cylinder is provided with spiral blades.

[0013] Preferably, it further includes a feed hopper which is arranged at the top of the frame. A feed valve is provided at the bottom of the feed hopper, and the feed valve is connected to a feed pipe.

[0014] Preferably, it further includes a discharge hopper which is arranged on the side of the outer ring of the bearing. A discharge port is provided at the bottom of the discharge hopper, and electric push rods are oppositely arranged on the inner wall thereof. The telescopic ends of the electric push rods are connected to the side of a discharge ring.

[0015] Preferably, it further includes a storage box which is arranged directly below the discharge port.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] ① The driving mechanism drives the inner cylinder to rotate. The first through hole will be aligned with the second through hole, and the activated carbon at the end of the inner cylinder will enter the cavity through the first through hole and the second through hole. At this time, the third through hole and the fourth through hole are staggered from each other, thus avoiding air from mixing into the inner cylinder. As the inner cylinder continues to rotate, the third through hole and the fourth through hole are aligned with each other, and the first through hole and the second through hole are staggered from each other. The inner cylinder is closed, and the activated carbon stops being discharged into the cavity. At this time, the activated carbon in the cavity is discharged to the outside through the third through hole and the fourth through hole. When the first through hole and the second through hole start to communicate, the third through hole and the fourth through hole are staggered from each other and in a completely closed state. Similarly, when the third through hole and the fourth through hole start to communicate, the first through hole and the second through hole are staggered from each other and in a completely closed state. The discharge through holes are alternately aligned, enabling the present invention to not only discharge continuously but also avoid oxygen from mixing into the activation chamber and reacting oxidatively to increase the temperature of the activation furnace, ensuring the quality of carbide activation.

[0018] ② A lifting mechanism is provided. By means of the lifting mechanism, the outer cylinder can be tilted at a certain angle, and at the same time, the driving mechanism is started, so that the outer cylinder is in an inclined state and rotates. The carbide continuously tumbles in the inner cylinder, increasing the contact with water vapor and improving the activation efficiency. By adjusting the inclination angle, the moving speed of the carbide in the inner cylinder can be adjusted, thereby controlling the activation treatment time. When the carbide moves from one end of the inner cylinder to the other end, the activation treatment is just completed, thus realizing the continuity of the activation treatment.

[0019] ③ By the telescopic end of the electric push rod extending to drive the discharge ring to move, the alignment length of the first through hole and the second through hole can be adjusted, which is beneficial to controlling the discharge speed. When larger activated carbon particles block the through holes, the telescopic end of the electric push rod drives the discharge ring to move, increasing the alignment length of the first through hole and the second through hole, enabling the larger activated carbon particles to enter the second through hole. As the inner cylinder rotates, the larger activated carbon particles are continuously cut by the blade part, crushed, and discharged from the second through hole into the cavity, thus effectively preventing the problem of discharge blockage. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the preferred embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an activated carbon heating device with flue gas recovery according to the present invention;

[0022] Figure 2 It is a sectional structural schematic diagram of an activated carbon heating device with flue gas recovery according to the present invention;

[0023] Figure 3 It is Figure 2 The enlarged view at A-A in

[0024] Figure 4 It is Figure 3 The enlarged view at B in

[0025] Reference numerals: 1, frame; 2, outer cylinder; 3, end cover; 4, feed pipe; 5, feed hopper; 6, feed valve; 7, inner cylinder; 8, hydraulic rod; 9, U-shaped frame; 10, rotating shaft; 11, bearing; 12, motor; 13, gear; 14, toothed ring; 15, connecting rod; 16, spiral blade; 17, first through hole; 18, discharge ring; 19, second through hole; 20, controller; 21, third through hole; 22, cavity; 23, fourth through hole; 24, discharge hopper; 25, storage frame; 26, discharge port; 27, exhaust pipe; 28, heat exchanger; 29, water inlet pipe; 30, water valve; 31, heat exchange pipe; 32, connecting pipe; 33, steam heater; 34, inlet pipe; 35, temperature sensor; 36, intake valve; 37, vent hole; 38, blade part; 39, electric push rod. Specific embodiments

[0026] To better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention will be further described in conjunction with the drawings.

[0027] See Figures 1 to 3, an activated carbon heating device capable of flue gas recovery provided by the present invention includes a frame 1, a heating mechanism, a lifting mechanism, a driving mechanism, and a controller 20. A feed pipe 4 is provided at the top of the frame 1. One end of the feed pipe 4 is connected to the frame 1, and the other end is fixedly provided with an end cap 3. A temperature sensor 35 is provided on the side of the end cap 3. The end cap 3 is rotatably connected to an outer cylinder 2 and an inner cylinder 7. The feed pipe 4 is communicated with the inner cylinder 7. The inner cylinder 7 is located inside the outer cylinder 2. A plurality of ventilation holes 37 are provided on the inner cylinder 7. The ventilation holes 37 are used to provide a channel for superheated steam to enter the inner cylinder 7. And a plurality of first through holes 17 are evenly distributed in the radial direction at its end far from the end cap 3. Activated carbon can be discharged from the first through holes 17. A plurality of fourth through holes 23 are evenly distributed in the radial direction at one end of the outer cylinder 2. The first through holes 17 and the fourth through holes 23 are aligned one by one. A plurality of connecting rods 15 are provided between the outer wall of the inner cylinder 7 and the inner wall of the outer cylinder 2. An outlet ring 18 is rotatably provided at the ends of the outer cylinder 2 and the inner cylinder 7 far from the end cap 3. The outlet ring 18 and the end cap 3 enclose the inner cylinder 7 and the outer cylinder 2 into a closed space. A cavity 22 is provided inside the outlet ring 18. A plurality of second through holes 19 are evenly distributed in the radial direction on its inner circle, and a plurality of third through holes 21 are evenly distributed in the radial direction on its outer circle. The second through holes 19 and the third through holes 21 are staggered from each other in the circumferential direction. A blade portion 38 is provided on the inner wall of the second through hole 19. The inner cylinder 7 is connected to a flue gas recovery mechanism through a smoke exhaust pipe 27. The flue gas recovery mechanism is provided on the top surface of the frame 1. The heating mechanism is provided on the top surface of the frame 1 and is communicated with the outer cylinder 2. Both ends of the outer cylinder 2 are respectively connected to the lifting mechanism. The lifting mechanism is provided on the top of the frame 1. A driving mechanism is also provided on the outer cylinder 2. The driving mechanism is used to drive the outer cylinder 2 to rotate. The controller 20 is provided on the top surface of the frame 1 and is electrically connected to the heating mechanism, the lifting mechanism, the driving mechanism, and the flue gas recovery mechanism. The controller 20 adopts a low-power microprocessor with the model of STM32-L0.

[0028] When the heating device is working, first place the carbide in the feed pipe 4. The carbide is discharged into the inner cylinder 7 through the feed pipe 4. Then, start the water valve 30 to allow water to flow from the water inlet pipe 29 into the heat exchange pipe 31 and enter the steam heater 33 through the connecting pipe 32, heating the steam heater 33 to the activation temperature. At this time, after the water evaporates, it continues to be heated into superheated steam. Open the intake valve 36, and the superheated steam enters the outer cylinder 2 from the intake pipe 34 and enters the inner cylinder 7 through the vent holes 37, coming into contact with the carbide in the inner cylinder 7 to complete the activation process of the carbide. Then, start the lifting mechanism to tilt the outer cylinder 2, and at the same time start the driving mechanism, so that the outer cylinder 2 is tilted and rotates. By adjusting the tilt angle, the moving speed of the carbide in the inner cylinder 7 can be adjusted, thereby controlling the activation time. When the carbide moves from one end of the inner cylinder 7 to the other end, the activation process is just completed. As the inner cylinder 7 rotates, the first through hole 17 will align with the second through hole 19, and the activated carbon at the end of the inner cylinder 7 will enter the cavity 22 through the first through hole 17 and the second through hole 19. The blade part 38 can cut the larger particles of activated carbon entering the second through hole 19 to avoid blockage. At this time, the third through hole 21 and the fourth through hole 23 are staggered from each other, thus preventing air from mixing into the inner cylinder 7. As the inner cylinder 7 continues to rotate, the third through hole 21 and the fourth through hole 23 align with each other, and the first through hole 17 and the second through hole 19 are staggered from each other. The inner cylinder 7 closes, and the activated carbon stops discharging into the cavity 22. At this time, the activated carbon in the cavity 22 is discharged to the outside through the third through hole 21 and the fourth through hole 23. When the first through hole 17 and the second through hole 19 start to communicate, the third through hole 21 and the fourth through hole 23 are staggered from each other and in a completely closed state. Similarly, when the third through hole 21 and the fourth through hole 23 start to communicate, the first through hole 17 and the second through hole 19 are staggered from each other and in a completely closed state. The discharge through holes are alternately aligned, enabling the present invention to not only continuously discharge materials but also prevent oxygen from mixing into the activation chamber and reacting oxidatively to increase the activation furnace temperature, ensuring the activation quality of the carbide.

[0029] Preferably, the lifting mechanism includes bearings 11, hydraulic rods 8, U-shaped frames 9, and rotating shafts 10. The bearings 11 are respectively sleeved at both ends of the outer cylinder 2. The hydraulic rods 8 are oppositely arranged on the top of the frame 1. One hydraulic rod 8 is fixedly connected to the frame 1, and the other is hinged to the top of the frame 1. Their telescopic ends are both connected to the U-shaped frames 9. The two ends of the bottom of the U-shaped frame 9 are rotationally connected to the bearings 11 through the rotating shafts 10.

[0030] When the heating device is working, start one side of the hydraulic rod 8. The telescopic end of the hydraulic rod 8 extends to drive one end of the outer cylinder 2 to lower. Start the other side of the hydraulic rod 8. The telescopic end of the hydraulic rod 8 shortens to drive one end of the outer cylinder 2 to rise, making the outer cylinder 2 tilted. The exhaust pipe 27 is located at the higher end. The high-temperature flue gas generated during the activation of the carbide rises, which is conducive to the high-temperature flue gas being discharged from the exhaust pipe 27.

[0031] Preferably, the driving mechanism includes a motor 12, a gear 13, and a toothed ring 14. The motor 12 is arranged on the top of the bearing 11, and its output shaft is drivingly connected to the gear 13. The motor 12 is a stepper motor 12 that can precisely control the rotation angle. The gear 13 meshes with the toothed ring 14, and the toothed ring 14 is sleeved on the outer cylinder 2.

[0032] When the heating device works, the motor 12 is started. The rotation of the motor 12 drives the gear 13 to rotate, and the rotation of the gear 13 drives the toothed ring 14 to rotate, thereby driving the outer cylinder 2 to rotate. The controller 20 can control the rotation speed of the outer cylinder 2 by controlling the rotation speed of the motor 12, so that the carbide continuously tumbles in the inner cylinder 7, which is beneficial to the activation treatment and improves the activation efficiency.

[0033] Preferably, the flue gas recovery mechanism includes a heat exchanger 28, heat exchange tubes 31, a water inlet pipe 29, a water valve 30, and a connecting pipe 32. One end of the inner cylinder 7 is connected to the heat exchanger 28 through a smoke exhaust pipe 27. The heat exchanger 28 is arranged on the top surface of the frame 1. The heat exchange tubes 31 are spirally arranged in the heat exchanger 28. One end of the heat exchange tubes 31 is connected to the water inlet pipe 29, and the other end is connected to the connecting pipe 32. The connecting pipe 32 is connected to the heating mechanism, and the water valve 30 is arranged on the water inlet pipe 29.

[0034] When the heating device works, high-temperature flue gas is generated during the activation treatment of the carbide. The high-temperature flue gas is discharged into the heat exchanger 28 through the smoke exhaust pipe 27. The water valve 30 is opened, and normal-temperature water enters the heat exchange tubes 31 from the water inlet pipe 29. The heat exchange tubes 31 are spirally arranged in the heat exchanger 28. The high-temperature flue gas contacts the heat exchange tubes 31 fully from bottom to top. The normal-temperature water increases in temperature after heat exchange, and the temperature of the high-temperature flue gas decreases, completing the energy recovery.

[0035] Preferably, the heating mechanism includes a steam heater 33, an air inlet pipe 34, and an air inlet valve 36. The steam heater 33 is arranged on the top surface of the frame 1. The steam heater 33 is connected to the end cover 3 through the air inlet pipe 34. One end of the air inlet pipe 34 passes through the end cover 3 and communicates with the inside of the outer cylinder 2.

[0036] When the heating device works, the temperature sensor 35 detects the temperature inside the outer cylinder 2 in real time. When the temperature is lower than the activation temperature, the controller 20 starts the steam heater 33 to heat the water vapor, and then starts the air inlet valve 36. The superheated steam is introduced into the outer cylinder 2 through the air inlet pipe 34 to activate the carbide in the inner cylinder 7, thereby maintaining the stability of the activation temperature and improving the activation effect.

[0037] Preferably, the inner wall of the inner cylinder 7 is provided with spiral blades 16.

[0038] When the heating device is working, the driving mechanism drives the outer cylinder 2 to rotate. The rotation of the outer cylinder 2 drives the inner cylinder 7 to rotate, and the rotation of the inner cylinder 7 drives the spiral blade 16 to rotate, so that the carbide particles are continuously squeezed by the spiral blade 16, thereby transporting the carbide particles towards the end.

[0039] Preferably, it further includes a feed hopper 5. The feed hopper 5 is arranged at the top of the frame 1, and a feed valve 6 is provided at its bottom. The feed valve 6 is connected to the feed pipe 4.

[0040] When the heating device is working, first place the carbide in the feed hopper 5. Starting the feed valve 6 can discharge the carbide into the inner cylinder 7 through the feed pipe 4 for activation treatment. The feed hopper 5 has a certain volume, so that continuous feeding can be achieved by controlling the opening of the feed valve 6.

[0041] Preferably, it further includes a discharge hopper 24. The discharge hopper 24 is arranged on the side of the outer ring of the bearing 11. A discharge port 26 is provided at its bottom, and electric push rods 39 are oppositely arranged on its inner wall. The telescopic end of the electric push rod 39 is connected to the side of the discharge ring 18.

[0042] When the heating device needs to discharge materials, under the drive of the driving mechanism, the inner cylinder 7 rotates at a certain speed. Start the electric push rod 39, and the telescopic end of the electric push rod 39 extends to drive the discharge ring 18 to move, which can adjust the alignment length of the first through hole 17 and the second through hole 19, facilitating the control of the discharge speed. By driving the discharge ring 18 to move with the telescopic end of the electric push rod 39, the alignment length of the first through hole 17 and the second through hole 19 is increased, enabling larger activated carbon particles to enter the second through hole 19. As the inner cylinder 7 rotates, the larger activated carbon particles are continuously cut by the blade part 38, crushed, discharged from the second through hole 19 and into the cavity, thereby effectively preventing blockage problems during discharge. The maximum opening is when the first through hole 17 and the second through hole 19 are completely aligned. The discharge hopper 24 surrounds the outer cylinder 2, so that when the activated carbon is discharged from the inner cylinder 7, it is discharged along the discharge port 26 at the bottom. The discharge hopper 24 provides a fixed support for the discharge ring 18.

[0043] Preferably, it further includes a storage frame 25. The storage frame 25 is arranged directly below the discharge port 26.

[0044] The activated carbon is discharged from the discharge port 26 and falls into the storage frame 25, facilitating the collection of the activated carbon.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An activated carbon heating device capable of flue gas recovery, characterized in that It includes a frame, a heating mechanism, a lifting mechanism, a driving mechanism and a controller. A feed pipe is provided at the top of the frame. One end of the feed pipe is connected to the frame, and the other end is fixedly provided with an end cover. A temperature sensor is provided on the side of the end cover. The end cover is rotatably connected with an outer cylinder and an inner cylinder. The inner cylinder is located inside the outer cylinder. A plurality of ventilation holes are provided on the inner cylinder, and a plurality of first through holes are evenly distributed along the radial direction at one end of the inner cylinder away from the end cover. A plurality of fourth through holes are evenly distributed along the radial direction at one end of the outer cylinder. The first through holes and the fourth through holes are aligned one by one. A plurality of connecting rods are provided between the outer wall of the inner cylinder and the inner wall of the outer cylinder. An outlet ring is rotatably provided at one end of the outer cylinder and the inner cylinder away from the end cover. The outlet ring and the end cover enclose the inner cylinder and the outer cylinder into a sealed space. A cavity is provided inside the outlet ring. A plurality of second through holes are evenly distributed along the radial direction on its inner ring, and a plurality of third through holes are evenly distributed along the radial direction on its outer ring. The second through holes and the third through holes are staggered in the circumferential direction. A blade part is provided on the inner wall of the second through hole. The inner cylinder is connected with a flue gas recovery mechanism through a smoke exhaust pipe. The flue gas recovery mechanism is provided on the top surface of the frame. The heating mechanism is provided on the top surface of the frame and communicates with the outer cylinder. Both ends of the outer cylinder are respectively connected to the lifting mechanism. The lifting mechanism is provided on the top of the frame. A driving mechanism is also provided on the outer cylinder. The driving mechanism is used to drive the outer cylinder to rotate. The controller is provided on the top surface of the frame and is electrically connected to the heating mechanism, the lifting mechanism, the driving mechanism and the flue gas recovery mechanism; The driving mechanism drives the inner cylinder to rotate. The first through hole will be aligned with the second through hole. The activated carbon located at the end of the inner cylinder will enter the cavity through the first through hole and the second through hole. At this time, the third through hole and the fourth through hole are staggered from each other, so as to prevent air from mixing into the inner cylinder. As the inner cylinder continues to rotate, the third through hole and the fourth through hole are aligned with each other, and the first through hole and the second through hole are staggered from each other. The inner cylinder closes, and the activated carbon stops being discharged into the cavity. At this time, the activated carbon in the cavity is discharged to the outside through the third through hole and the fourth through hole; The flue gas recovery mechanism includes a heat exchanger, a heat exchange pipe, a water inlet pipe, a water valve and a connecting pipe. One end of the inner cylinder is communicated with the heat exchanger through a smoke exhaust pipe. The heat exchanger is provided on the top surface of the frame. The heat exchange pipe is spirally arranged inside the heat exchanger. One end of it is connected to the water inlet pipe, and the other end is connected to the connecting pipe. The connecting pipe is connected to the heating mechanism. The water valve is provided on the water inlet pipe; The heating mechanism includes a steam heater, an air inlet pipe and an air inlet valve. The steam heater is provided on the top surface of the frame. The steam heater is connected to the end cover through the air inlet pipe. One end of the air inlet pipe passes through the end cover and communicates with the inside of the outer cylinder.

2. The activated carbon heating device capable of flue gas recovery according to claim 1, characterized in that, The lifting mechanism includes bearings, hydraulic rods, U-shaped frames and rotating shafts. The bearings are respectively sleeved at both ends of the outer cylinder. The hydraulic rods are oppositely arranged on the top of the frame. One hydraulic rod is fixedly connected to the frame, and the other is hinged to the top of the frame. Their telescopic ends are both connected with U-shaped frames. Both ends of the bottom of the U-shaped frame are rotatably connected to the bearings through rotating shafts.

3. The activated carbon heating device capable of flue gas recovery according to claim 1, wherein, The driving mechanism includes a motor, a gear and a toothed ring. The motor is provided on the top of the bearing. Its output shaft is drivingly connected to the gear. The gear meshes with the toothed ring. The toothed ring is sleeved on the outer cylinder.

4. A heated activated carbon device capable of flue gas recovery according to claim 1, characterized in that, The inner wall of the inner cylinder is provided with spiral blades.

5. A kind of activated carbon heating device capable of flue gas recovery according to claim 1, characterized in that, It further includes a feed hopper which is arranged at the top of the frame. A feed valve is provided at the bottom thereof, and the feed valve is connected to a feed pipe.

6. The activated carbon heating device capable of flue gas recovery according to claim 1, characterized in that, It further includes a discharge hopper which is arranged on the side of the outer ring of the bearing. A discharge port is provided at the bottom thereof, and electric push rods are oppositely arranged on the inner wall. The telescopic ends of the electric push rods are connected to the side of a discharge ring.

7. The activated carbon heating device capable of flue gas recovery according to claim 1, wherein It further includes a storage box which is arranged directly below the discharge port.

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