Regeneration device for adsorbing VOCs waste gas by using activated carbon

Abstract

The invention discloses an activated carbon adsorption VOCs waste gas regeneration device, and relates to the technical field of waste gas regeneration devices.The activated carbon adsorption VOCs waste gas regeneration device comprises a mounting bottom plate, the top of the mounting bottom plate is provided with an adsorption assembly, the adsorption assembly comprises two activated carbon boxes and two brackets used for containing activated carbon, and the top of the mounting bottom plate is further provided with a cooling assembly; drying assemblies are arranged on the outer surfaces of the two activated carbon boxes, each drying assembly comprises a communicating pipe and a tooth row, exhaust fans are arranged on the inner walls of the two communicating pipes through auxiliary rods, a plurality of molecular sieves are arranged between the opposite inner walls of the two communicating pipes, rotating shafts are rotationally connected to the inner walls of the molecular sieves, and driving gears are arranged on the outer surfaces of the rotating shafts. The moisture in the saturated activated carbon is separated in advance, so that the influence of the moisture in the regeneration treatment process of the high-humidity activated carbon is prevented, and the problem that the performance of the activated carbon is reduced due to the fact that the aging of the activated carbon is easily accelerated when the high-humidity saturated activated carbon is regenerated in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of waste gas regeneration equipment technology, specifically to an activated carbon adsorption VOCs waste gas regeneration equipment. Background Technology

[0002] The activated carbon adsorption VOCs waste gas regeneration device is an integrated environmental protection equipment that combines adsorption and regeneration. Its core function is to first adsorb volatile organic compounds in industrial waste gas using activated carbon. After the activated carbon becomes saturated, specific technology is used to desorb the adsorbed VOCs, allowing the activated carbon to regain its adsorption capacity and be recycled. At the same time, the desorbed VOCs are recovered and decomposed to avoid secondary pollution.

[0003] In existing activated carbon adsorption VOCs waste gas regeneration devices, if the adsorption is of high-humidity VOCs gas, during the regeneration process, the pores of the activated carbon are filled with water vapor under high humidity. When the regeneration temperature rises, the water vapor rapidly vaporizes and expands, generating outward pressure on the pore walls. During the cooling stage, the pores shrink, generating inward stress. This repeated expansion and contraction cycle causes cracks in the activated carbon skeleton, eventually leading to particle breakage and pulverization, a significant decrease in specific surface area, and ultimately accelerated aging of the activated carbon, resulting in a reduction in its performance. Summary of the Invention

[0004] The purpose of this invention is to provide an activated carbon adsorption VOCs waste gas regeneration device to solve the problem mentioned in the background art that the regeneration of high humidity saturated activated carbon is prone to accelerate the aging of activated carbon, resulting in a decrease in activated carbon performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An activated carbon adsorption VOCs waste gas regeneration device includes a mounting base plate. An adsorption assembly is mounted on the top of the mounting base plate. The adsorption assembly includes two activated carbon boxes and two supports for holding the activated carbon. A cooling assembly is also mounted on the top of the mounting base plate. Drying components are mounted on the outer surfaces of both activated carbon boxes. Each drying component includes a connecting pipe and a toothed rack. A blower is mounted on the inner wall of each connecting pipe via an auxiliary rod. Multiple molecular sieves are arranged between the opposing inner walls of the two connecting pipes. Rotating shafts are rotatably connected to the inner walls of each molecular sieve. Drive gears are mounted on the outer surfaces of each rotating shaft. After the waste gas in one of the activated carbon boxes is adsorbed, the corresponding blower adsorbs water vapor and some gas from the activated carbon box onto the surface of one of the molecular sieves to adsorb the water vapor. When the surface of a molecular sieve is saturated with water vapor, the toothed rack moves to rotate the saturated molecular sieve to a horizontal position, and then rotates another adjacent molecular sieve to a vertical position to continue adsorbing moisture.

[0006] Preferably, both drying components further include a speed changer, the output end of which is fixedly connected to an output shaft, a driven gear is fixedly installed at one end of the output shaft, a fixing plate is fixedly installed on the outer surface of both activated carbon boxes, a plurality of internal gear rings are fixedly installed on the outer surface of both fixing plates, a mounting bracket is fixedly installed on the outer surface of both connecting pipes, and a forward and reverse motor is fixedly installed on the outer surface of both mounting brackets by screws.

[0007] Preferably, the output ends of the two positive and negative motors are fixedly connected to lead screws, the outer surfaces of the two lead screws are threaded with slides, the inner walls of the two slides are fixed with connecting rods, one end of the two connecting rods is provided with a positive magnet, glass plates are fixedly installed between the opposite inner walls of the two connecting tubes, the inner walls of the two connecting tubes are slidably connected to dew point meters through auxiliary rods, and the outer surfaces of the two dew point meters are coupled with negative magnets.

[0008] Preferably, the cooling component includes a gas tank, an air inlet pipe fixedly connected to the top of the gas tank, two first valves provided on the outer surface of the air inlet pipe, an air outlet pipe fixedly connected between the outer surfaces of the two activated carbon boxes, a second valve provided on the outer surface of each of the two air outlet pipes, an air pump provided on the top of the mounting base plate, a delivery pipe fixedly connected to the output end of the air pump, and a condenser provided on the top of the mounting base plate, with a lead pipe fixedly connected to the output end of the condenser.

[0009] Preferably, a recovery assembly is provided on the outer surface of both connecting pipes, both recovery assemblies include a load frame, both load frames have a hydraulic rod on their inner top surface, both hydraulic rods have a sealing plate fixedly connected to their bottom ends, and both connecting pipes have a negative pressure pump fixedly installed at their bottoms by screws. The input end of the negative pressure pump is fixedly connected to an inlet pipe, and the output end of the negative pressure pump is fixedly connected to an outlet pipe.

[0010] Preferably, the adsorption assembly further includes a smoke inlet pipe, the outer surface of which is provided with two third valves, the bottom of each of the two activated carbon boxes is fixedly connected to the top of the mounting base plate, and the bottom end of the smoke inlet pipe is fixedly inserted into the interior of the two activated carbon boxes.

[0011] Preferably, the outer surfaces of both connecting pipes are fixedly connected to return pipes, one end of each of the two return pipes is fixedly inserted into the interior of the two activated carbon boxes, the outer surfaces of both return pipes are provided with one-way valves, a VOCs exhaust pipe is fixedly connected between the outer surfaces of the two activated carbon boxes, a catalytic combustion furnace is provided on the top of the mounting base plate, one end of the VOCs exhaust pipe is coupled to the inlet end of the catalytic combustion furnace, a high-temperature pipe is fixedly connected to the outer surfaces of both activated carbon boxes, and a fourth valve is provided on the outer surfaces of both high-temperature pipes.

[0012] Preferably, the outer surfaces of the two connecting pipes are fixedly connected to the inner walls of the two activated carbon boxes, the plurality of rotating shafts are divided into two groups, and the two ends of each group of rotating shafts are movably extended to the outside of the two connecting pipes, the input ends of the plurality of speed changers are fixedly connected to one end of the plurality of rotating shafts, the outer surfaces of the plurality of driven gears are meshed with the inner walls of the plurality of internal gear rings, the plurality of output shafts are divided into two groups, and one end of each group of output shafts is movably extended to the outside of the two fixed plates, the plurality of driving gears are divided into two groups, and the outer surfaces of each group of driving gears are sequentially meshed with the outer surfaces of the two gear rows, the outer surfaces of the two slides are slidably connected to the inner walls of the two mounting brackets, and the plurality of positive ferromagnets are magnetically attracted to the plurality of negative ferromagnets.

[0013] Preferably, the bottom of the gas tank is fixedly connected to the top of the mounting base plate by screws, the bottom end of the air inlet pipe is fixedly inserted into the interior of the two activated carbon boxes, the input end of the air pump is fixedly connected to one end of the air outlet pipe, one end of the delivery pipe is coupled to the input end of the condenser, and one end of the lead pipe is fixedly inserted into the interior of the gas tank.

[0014] Preferably, the bottoms of the two load holders are fixedly connected to the tops of the two connecting pipes, the bottom ends of the two hydraulic rods are movably inserted into the interior of the two connecting pipes, the outer surfaces of the two sealing plates slide against the inner walls of the two connecting pipes, and one end of the two liquid inlet pipes is fixedly inserted into the interior of the two connecting pipes.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. When the temperature in the activated carbon box reaches the required temperature, the moisture in the activated carbon is drawn into the connecting pipe by negative pressure, and the moisture in the gas is absorbed by multiple molecular sieves in turn until the free moisture in the saturated activated carbon is adsorbed to the standard level. Then the exhaust fan can be turned off. By separating the moisture in the saturated activated carbon in advance, the high humidity activated carbon regeneration process is prevented from being affected by moisture. This solves the problem in the existing technology that the regeneration of high humidity saturated activated carbon is prone to accelerated aging of activated carbon, which leads to a decrease in the performance of activated carbon. 2. During the movement of the slide, the connecting rod is also moved, which in turn moves the positive magnet connected to it forward, thereby moving the corresponding negative magnet, thus pushing the dew point meter forward to the side of another molecular sieve near the reflux pipe. The automatic movement of the dew point meter facilitates the testing of the saturation of each molecular sieve that adsorbs water. 3. In order to regenerate saturated activated carbon, the saturated activated carbon is first cooled down, so that the water vapor in the pores of the activated carbon changes from the adsorbed state to the free state. The kinetic energy of the water vapor decreases, and it can no longer maintain the gaseous state. It will condense into liquid water in the pores. The binding force between liquid water and activated carbon is much weaker than that of gas adsorption. It can be discharged by gravity or a slight airflow, which facilitates the separation of water in the subsequent regeneration process of activated carbon. 4. After the water in the activated carbon is removed, the movement of the toothed rack will rotate all the molecular sieves in the connecting tube to a horizontal state, and the sealing plate will be moved downward to the outer surface of the auxiliary rod at the outlet of the connecting tube. The negative pressure pump will be started, which will drive the liquid inlet pipe to draw gas into the interior of the connecting tube, so that the area below the sealing plate is under negative pressure. Under the action of negative pressure, the water adsorbed in the molecular sieve will be extracted, which will facilitate the subsequent recycling of the molecular sieve. 5. After the moisture in the activated carbon box is extracted, high-temperature gas from the outside is transported to the activated carbon box 201 to heat the activated carbon, enhance the kinetic energy of VOCs molecules, break the adsorption equilibrium, and achieve desorption. The desorbed gas is then transported to the catalytic combustion furnace. Under the action of the catalyst in the catalytic combustion furnace, the high concentration of VOCs undergoes a deep oxidation reaction with oxygen to generate harmless carbon dioxide and water, thereby achieving the desorption and regeneration of the activated carbon. Attached Figure Description

[0016] Figure 1 This is a front perspective view of an activated carbon adsorption VOCs waste gas regeneration device according to the present invention; Figure 2 This is a side perspective view of an activated carbon adsorption VOCs waste gas regeneration device according to the present invention; Figure 3 This is a sectional perspective view of the activated carbon box and adjacent structures in an activated carbon adsorption VOCs waste gas regeneration device of the present invention. Figure 4 This is a perspective view of the cooling component and adjacent connection structure in an activated carbon adsorption VOCs waste gas regeneration device of the present invention. Figure 5 This is a sectional perspective view of the connecting pipe and adjacent connection structure in an activated carbon adsorption VOCs waste gas regeneration device of the present invention. Figure 6 This is a perspective view of the molecular sieve and adjacent structure in an activated carbon adsorption VOCs waste gas regeneration device of the present invention. Figure 7 This is a perspective view of the slide and adjacent connection structure in an activated carbon adsorption VOCs waste gas regeneration device of the present invention; Figure 8 for Figure 7 Enlarged view of point A in the middle; Figure 9This is a sectional perspective view of the connecting pipe and adjacent connection structure in an activated carbon adsorption VOCs waste gas regeneration device of the present invention. Figure 10 for Figure 9 Enlarged view of point B in the middle; Figure 11 This is a cross-sectional perspective view of the recovery component and adjacent structure in an activated carbon adsorption VOCs waste gas regeneration device of the present invention.

[0017] In the diagram: 1. Mounting base plate; 2. Adsorption assembly; 3. Cooling assembly; 4. Drying assembly; 5. Recovery assembly; 6. High-temperature pipe; 7. Fourth valve; 8. VOCs exhaust pipe; 9. Catalytic combustion furnace; 10. Return pipe; 11. One-way valve; 201. Activated carbon box; 202. Support frame; 203. Flue gas inlet pipe; 204. Third valve; 301. Gas tank; 302. Inlet pipe; 303. First valve; 304. Exit pipe; 305. Second valve; 306. Air pump; 307. Delivery pipe; 3 08. Condenser; 309. Inlet pipe; 401. Connecting pipe; 402. Exhaust fan; 403. Molecular sieve; 404. Rotating shaft; 405. Speed ​​changer; 406. Output shaft; 407. Driven gear; 408. Fixing plate; 409. Internal gear ring; 410. Drive gear; 411. Mounting bracket; 412. Forward and reverse motor; 413. Lead screw; 414. Slide carriage; 415. Gear rack; 416. Connecting rod; 417. Positive pole magnet; 418. Glass plate; 419. Negative pole magnet; 420. Dew point meter; 501. Load frame; 502. Hydraulic rod; 503. Sealing plate; 504. Negative pressure pump; 505. Inlet pipe; 506. Outlet pipe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-11This invention provides a technical solution: an activated carbon adsorption VOCs waste gas regeneration device, comprising a mounting base plate 1, an adsorption assembly 2 disposed on the top of the mounting base plate 1, the adsorption assembly 2 comprising two activated carbon boxes 201 and two support frames 202 for placing activated carbon, a cooling assembly 3 disposed on the top of the mounting base plate 1, a drying assembly 4 disposed on the outer surface of each of the two activated carbon boxes 201, each of the two drying assemblies 4 comprising a connecting pipe 401 and a toothed rack 415, a fan 402 disposed on the inner wall of each of the two connecting pipes 401 via an auxiliary rod, a plurality of molecular sieves 403 disposed between the opposing inner walls of the two connecting pipes 401, a rotating shaft 404 rotatably connected to the inner wall of each of the plurality of molecular sieves 403, and a drive gear 4 disposed on the outer surface of each of the plurality of rotating shafts 404. 10. After the exhaust gas in one of the activated carbon boxes 201 is completely adsorbed, the corresponding exhaust fan 402 adsorbs water vapor and some gas in the activated carbon box 201 onto the surface of one of the molecular sieves 403 to adsorb water vapor. When the surface of a molecular sieve 403 is saturated with water vapor, the toothed rack 415 moves to rotate the saturated molecular sieve 403 to a horizontal position, and then rotates the other adjacent molecular sieve 403 to a vertical position to continue adsorbing moisture. Both drying components 4 also include a speed reducer 405. The output end of the speed reducer 405 is fixedly connected to an output shaft 406. One end of the output shaft 406 is fixedly installed with a driven gear 407. The outer surfaces of both activated carbon boxes 201 are fixedly installed with fixing plates 408. Multiple internal toothed rings 409 are fixedly installed on the outer surface of each of the two connecting pipes 401. Mounting brackets 411 are fixedly installed on the outer surface of each of the two mounting brackets 411. Reverse motors 412 are fixedly installed on the outer surface of each of the two mounting brackets 411 by screws. Lead screws 413 are fixedly connected to the output ends of each of the two lead screws 413. Slides 414 are threaded onto the outer surface of each of the two lead screws 413. Connecting rods 416 are fixed to the inner walls of each of the two slides 414. Positive magnets 417 are provided at one end of each of the two connecting rods 416. Glass plates 418 are fixedly installed between the opposing inner walls of each of the two connecting pipes 401. Dew point meters 420 are slidably connected to the inner walls of each of the two connecting pipes 401 by auxiliary rods. Negative magnets 417 are coupled to the outer surfaces of each of the two dew point meters 420. Ferromagnetic 419, two connecting pipes 401 are fixedly connected to the outer surfaces of two return pipes 10, one end of each return pipe 10 is fixedly inserted into the interior of two activated carbon boxes 201, and one-way valves 11 are installed on the outer surfaces of both return pipes 10. A VOCs exhaust pipe 8 is fixedly connected between the outer surfaces of the two activated carbon boxes 201. A catalytic combustion furnace 9 is installed on the top of the mounting base plate 1. One end of the VOCs exhaust pipe 8 is coupled to the inlet end of the catalytic combustion furnace 9. High-temperature pipes 6 are fixedly connected to the outer surfaces of both activated carbon boxes 201. A fourth valve 7 is installed on the outer surfaces of both high-temperature pipes 6. The outer surfaces of the two connecting pipes 401 are fixedly connected to the inner walls of the two activated carbon boxes 201. Multiple rotating shafts 404 are divided into two groups.Both ends of each set of rotating shafts 404 extend movably to the outside of two connecting pipes 401. The input ends of multiple speed changers 405 are fixedly connected to one end of each of the multiple rotating shafts 404. The outer surfaces of multiple driven gears 407 mesh with the inner walls of multiple internal gear rings 409. Multiple output shafts 406 are divided into two groups, with one end of each group of output shafts 406 extending movably to the outside of two fixed plates 408. Multiple driving gears 410 are divided into two groups, with the outer surface of each group of driving gears 410 meshing sequentially with the outer surfaces of two gear rows 415. The two slides 414 are slidably connected to the inner walls of the two mounting brackets 411. Multiple positive ferromagnets 417 are magnetically attracted to multiple negative ferromagnets 419. The bottoms of the two load holders 501 are fixedly connected to the tops of the two connecting pipes 401. The bottom ends of the two hydraulic rods 502 extend movably into the interiors of the two connecting pipes 401. The outer surfaces of the two sealing plates 503 slide against the inner walls of the two connecting pipes 401. One end of each of the two inlet pipes 505 is fixedly extended into the interiors of the two connecting pipes 401.

[0020] In this embodiment, when the temperature in the activated carbon box 201 reaches the required temperature, the first valve 303 corresponding to the activated carbon box 201 is closed, and then the exhaust fan 402 corresponding to the activated carbon box 201 is started to generate negative pressure, adsorbing the water vapor in the activated carbon box 201. Under the action of negative pressure, the gas is adsorbed into the interior of the connecting pipe 401, and the moisture in the gas is absorbed by the corresponding molecular sieve 403. For example... Figure 7As shown, the molecular sieve 403 is installed inside the auxiliary frame. Simultaneously, the dew point meter 420, installed inside the connecting pipe 401, is activated to detect the moisture content in the filtered gas. The dew point meter 420 indirectly reflects the adsorption capacity of the molecular sieve 403 by measuring the dew point of the gas adsorbed by the molecular sieve 403, detecting its saturation state. When the dew point meter 420 detects that the molecular sieve 403 is saturated, the external control system activates the forward and reverse motor 412, causing it to rotate the lead screw 413. This, in turn, moves the slide 414 along the outer surface of the lead screw 413, driving the corresponding drive gear 410 to rotate. The drive gear 410 then rotates the corresponding output shaft 406, which in turn drives the driven gear 407 to rotate. The internal gear ring 409 limits the movement of the driven gear 407, and the protruding teeth inside the internal gear ring 409 are made of elastic rubber to prevent the driven gear 407 from rotating on its own without external driving. The rotational frequency of the output shaft 406 is adjusted by the speed changer 405 and then output through the rotating shaft 404. The speed changer 405 switches between gear combinations with different numbers of teeth via a clutch, meshing the small gear on the drive shaft with the large gear on the driven shaft, thus adjusting the rotational speed of the rotating shaft 404. The rotating shaft 404 drives the corresponding molecular sieve 403 to rotate clockwise. When the molecular sieve 403 rotates to the position where the external auxiliary frame contacts the inner bottom surface of the connecting pipe 401, the gear row 415 moves precisely to engage with the drive gear. At position 410, the saturated molecular sieve 403 is housed. The toothed rack 415 continues to move forward with the rotation of the lead screw 413. When it reaches the position where it meshes with another drive gear 410, it will drive the corresponding shaft 404 to rotate, thereby causing the molecular sieve 403 corresponding to the shaft 404 to rotate upwards until the outer surface of the auxiliary frame portion of the molecular sieve 403 rotates to a position contacting the inner top surface of the connecting pipe 401. Additionally, if... Figure 7As shown, the surface of the auxiliary frame away from the rotating shaft 404 is arc-shaped to facilitate the rotation of the auxiliary frame. When the molecular sieve 403 rotates to a position perpendicular to the fixed plate 408, it can continue to adsorb moisture in the gas. The gas adsorbed into the connecting pipe 401 then re-enters the activated carbon box 201 through the return pipe 10. This cycle continues until the free moisture in the saturated activated carbon is adsorbed to the standard level, at which point the exhaust fan 402 can be turned off. In addition, during the movement of the slide 414, the connecting rod 416 also moves, which in turn moves the positive electrode magnet 417 connected to it forward. The movement of the dew point meter 420 causes the corresponding negative electrode magnet 419 to move, which in turn moves the dew point meter 420 forward to the side of another molecular sieve 403 near the reflux pipe 10. The automatic movement of the dew point meter 420 facilitates the testing of the saturation of each molecular sieve 403 that adsorbs moisture. By separating the moisture in the saturated activated carbon in advance, the effects of moisture on the regeneration process of high-humidity activated carbon are prevented. Repeated expansion and contraction cycles cause cracks in the activated carbon skeleton, which solves the problem in the existing technology that the regeneration process of high-humidity saturated activated carbon is prone to accelerate the aging of activated carbon and reduce the performance of activated carbon.

[0021] like Figures 1-4As shown, an activated carbon adsorption VOCs waste gas regeneration device includes a mounting base plate 1. An adsorption assembly 2 is mounted on the top of the mounting base plate 1. The adsorption assembly 2 includes two activated carbon boxes 201 and two support frames 202 for placing activated carbon. A cooling assembly 3 is also mounted on the top of the mounting base plate 1. Drying assemblies 4 are mounted on the outer surfaces of both activated carbon boxes 201. Each drying assembly 4 includes a connecting pipe 401 and a toothed rack 415. A fan 402 is mounted on the inner wall of each of the two connecting pipes 401 via an auxiliary rod. Multiple molecular sieves 403 are arranged between the opposing inner walls of the two connecting pipes 401. The inner walls of each of the 403 components are rotatably connected to a rotating shaft 404. Each of the outer surfaces of the rotating shafts 404 is equipped with a drive gear 410. After the exhaust gas in one of the activated carbon boxes 201 is completely adsorbed, the corresponding exhaust fan 402 adsorbs water vapor and some gas from the activated carbon box 201 onto the surface of one of the molecular sieves 403 to adsorb the water vapor. When the surface of a molecular sieve 403 is saturated with adsorbed water vapor, the toothed rack 415 moves to rotate the saturated molecular sieve 403 to a horizontal position, and then rotates another adjacent molecular sieve 403 to a vertical position to continue adsorbing moisture. The adsorption assembly 2 also includes a flue gas inlet pipe. 203. Two third valves 204 are installed on the outer surface of the flue pipe 203. The bottoms of the two activated carbon boxes 201 are fixedly connected to the top of the mounting base plate 1. The bottom end of the flue pipe 203 is fixedly inserted into the interior of the two activated carbon boxes 201. The outer surfaces of the two connecting pipes 401 are fixedly connected to return pipes 10. One end of each return pipe 10 is fixedly inserted into the interior of the two activated carbon boxes 201. One-way valves 11 are installed on the outer surface of each return pipe 10. A VOCs exhaust pipe 8 is fixedly connected between the outer surfaces of the two activated carbon boxes 201. A catalytic combustion furnace is installed on the top of the mounting base plate 1. 9. One end of the VOCs exhaust pipe 8 is coupled to the air inlet of the catalytic combustion furnace 9. The outer surfaces of the two activated carbon boxes 201 are fixedly connected to high-temperature pipes 6. The outer surfaces of the two high-temperature pipes 6 are each equipped with a fourth valve 7. The bottom of the gas tank 301 is fixedly connected to the top of the mounting base plate 1 by screws. The bottom end of the air inlet pipe 302 is fixedly inserted into the interior of the two activated carbon boxes 201. The input end of the air pump 306 is fixedly connected to one end of the exhaust pipe 304. One end of the delivery pipe 307 is coupled to the input end of the condenser 308. One end of the delivery pipe 309 is fixedly inserted into the interior of the gas tank 301.

[0022] In this embodiment, when high-humidity VOCs waste gas needs to be treated, the pre-treated VOCs waste gas pipeline is first fixedly connected to one end of the inlet pipe 203. Simultaneously, one of the third valves 204 is opened via an external control system, allowing the VOCs waste gas to enter the activated carbon box 201 through the inlet pipe 203. The activated carbon on the surface of the support frame 202 filters the volatile organic compounds and moisture in the VOCs waste gas. The filtered clean air is then discharged through the exhaust pipe of the activated carbon box 201. When the activated carbon adsorbs the volatile organic compounds... Once the activated carbon is saturated, the third valve 204 corresponding to that activated carbon box 201 can be closed. Then, another third valve 204 can be opened through the external control system, allowing the high-humidity VOCs waste gas that needs to be filtered to enter another activated carbon box 201 for filtration. Simultaneously, to achieve the regeneration and reuse of the saturated activated carbon, the operator first closes the exhaust pipe in the activated carbon box 201 corresponding to the saturated activated carbon through the external control system, and then opens the first valve 303 corresponding to that activated carbon box 201, allowing the low-temperature gas in the gas tank 301 to enter through the inlet pipe 302. Figure 3 The activated carbon in the activated carbon box 201 is cooled by a layer in the interlayer. Then, the second valve 305 corresponding to the activated carbon box 201 is opened by an external control system, allowing the gas that has completed heat exchange to enter the interior of the gas outlet pipe 304. At this time, the gas pump 306 is started to draw gas into the interior of the gas outlet pipe 304. The gas enters the condenser 308 through the delivery pipe 307 and is condensed. Then, it enters the gas tank 301 again through the guide pipe 309. This cycle continues until the activated carbon is cooled to the required temperature. The activated carbon box 201 itself is equipped with a temperature sensor to detect the temperature of the activated carbon. This is a mature existing technology and will not be discussed in detail here. The condenser 308 separates gas and liquid through heat exchange and phase change. It uses a cooling medium to remove heat from the gas, lowering the gas temperature below its dew point and causing it to change from a gaseous to a liquid state. Essentially, it uses heat transfer to break the phase equilibrium of the gas and promote its transformation to a liquid state. Since the adsorption of water by activated carbon is a physical adsorption, by cooling the saturated activated carbon in the activated carbon box 201, the water vapor in the activated carbon pores changes from an adsorbed state to a free state. The kinetic energy of the water vapor decreases, and it can no longer maintain a gaseous state. It will condense into liquid water in the pores. The binding force between liquid water and activated carbon is much weaker than that of gas adsorption. It can be discharged by gravity or a slight airflow, which facilitates the separation of water during the subsequent regeneration process of activated carbon.

[0023] like Figures 1-2 and Figures 5-11As shown, a recovery assembly 5 is provided on the outer surface of both connecting pipes 401. Both recovery assemblies 5 include a load frame 501. A hydraulic rod 502 is provided on the inner top surface of both load frames 501. A sealing plate 503 is fixedly connected to the bottom end of both hydraulic rods 502. A negative pressure pump 504 is fixedly installed at the bottom of both connecting pipes 401 by screws. An inlet pipe 505 is fixedly connected to the input end of the negative pressure pump 504, and an outlet pipe 506 is fixedly connected to the output end of the negative pressure pump 504.

[0024] In this embodiment, after the moisture in the activated carbon is removed, the movement of the toothed rack 415 rotates all the molecular sieves 403 in the connecting pipe 401 to a horizontal position. This activates the hydraulic rod 502 corresponding to the connecting pipe 401, causing it to extend and move the sealing plate 503 downwards until the outer surface of the sealing plate 503 moves to a position similar to... Figure 5 The outer surface of the auxiliary rod at the outlet of the connecting pipe 401 shown is sealed by the sealing plate 503, which is made of rubber material with sealing properties. Then, the negative pressure pump 504 can be started to drive the inlet pipe 505 to draw gas into the connecting pipe 401, so that the area below the sealing plate 503 is in a negative pressure state. Under the action of negative pressure, the water adsorbed in the molecular sieve 403 is extracted, which facilitates the subsequent recycling of the molecular sieve 403.

[0025] like Figures 1-3 As shown, the adsorption assembly 2 also includes a flue pipe 203. Two third valves 204 are provided on the outer surface of the flue pipe 203. The bottoms of the two activated carbon boxes 201 are fixedly connected to the top of the mounting base plate 1. The bottom end of the flue pipe 203 is fixedly connected to the interior of the two activated carbon boxes 201. The outer surfaces of the two connecting pipes 401 are fixedly connected to return pipes 10. One end of the two return pipes 10 is fixedly connected to the interior of the two activated carbon boxes 201. One-way valves 11 are provided on the outer surfaces of the two return pipes 10. A VOCs exhaust gas outlet pipe 8 is fixedly connected between the outer surfaces of the two activated carbon boxes 201. A catalytic combustion furnace 9 is provided on the top of the mounting base plate 1. One end of the VOCs exhaust gas outlet pipe 8 is coupled to the inlet end of the catalytic combustion furnace 9. High-temperature pipes 6 are fixedly connected to the outer surfaces of the two activated carbon boxes 201. A fourth valve 7 is provided on the outer surfaces of the two high-temperature pipes 6.

[0026] In this embodiment, after the moisture in the activated carbon box 201 is extracted, the fourth valve 7 corresponding to the activated carbon box 201 is opened, allowing high-temperature gas from the outside to enter the activated carbon box 201, heating the activated carbon, enhancing the kinetic energy of VOCs molecules, breaking the adsorption equilibrium, and achieving desorption. Then, the solenoid valve corresponding to the activated carbon box 201 in the VOCs exhaust pipe 8 is opened, allowing the desorbed gas to enter the catalytic combustion furnace 9. Under the action of the catalyst in the catalytic combustion furnace 9, the high-concentration VOCs undergo a deep oxidation reaction with oxygen at 250 to 400°C, generating harmless carbon dioxide and water, thereby achieving the desorption and regeneration of the activated carbon.

[0027] The usage and working principle of this device are as follows: When high-humidity VOCs waste gas needs to be treated, firstly, the pre-treated VOCs waste gas pipeline is fixedly connected to one end of the inlet pipe 203. Simultaneously, one of the third valves 204 is opened through the external control system, allowing the VOCs waste gas to enter the activated carbon box 201 through the inlet pipe 203. The activated carbon on the surface of the support 202 filters the volatile organic compounds and moisture in the VOCs waste gas. The filtered clean air is then discharged through the exhaust pipe of the activated carbon box 201. When the activated carbon adsorbs the volatile organic compounds... Once the compound adsorption is saturated, the third valve 204 corresponding to the activated carbon box 201 is closed. Then, another third valve 204 is opened via an external control system, allowing the high-humidity VOCs waste gas requiring filtration to enter another activated carbon box 201 for filtration. Simultaneously, to achieve the regeneration and reuse of the saturated activated carbon, the operator first closes the exhaust pipe in the activated carbon box 201 corresponding to the saturated activated carbon via the external control system, and then opens the first valve 303 corresponding to that activated carbon box 201, allowing the low-temperature gas in the gas tank 301 to enter through the inlet pipe 302. Figure 3The activated carbon in the activated carbon box 201 is cooled by a layer in the interlayer. Then, the second valve 305 corresponding to the activated carbon box 201 is opened by an external control system, allowing the gas that has completed heat exchange to enter the interior of the gas outlet pipe 304. At this time, the gas pump 306 is started to draw gas into the interior of the gas outlet pipe 304. The gas enters the condenser 308 through the delivery pipe 307 and is condensed. Then, it enters the gas tank 301 again through the lead pipe 309. This cycle continues until the activated carbon is cooled to the required temperature. Since the adsorption of moisture by activated carbon is a physical adsorption, the activated carbon in the activated carbon box 201... The saturated activated carbon is cooled, causing water vapor within the pores to change from an adsorbed state to a free state. The kinetic energy of the water vapor decreases, making it unable to maintain its gaseous state, and it condenses into liquid water within the pores. The binding force between liquid water and activated carbon is much weaker than that of gaseous adsorption, and it can be discharged by gravity or a slight airflow. This facilitates the separation of moisture during subsequent activated carbon regeneration. Then, the exhaust fan 402 corresponding to the activated carbon box 201 is activated to create negative pressure, adsorbing the water vapor in the activated carbon box 201. Under the action of negative pressure, the gas is adsorbed into the interior of the connecting pipe 401, and the moisture in the gas is absorbed by the corresponding molecular sieve 403. Figure 7As shown, the molecular sieve 403 is installed inside the auxiliary frame. Simultaneously, the dew point meter 420, installed inside the connecting pipe 401, is activated to detect the moisture content in the filtered gas. When the molecular sieve 403 is detected to be saturated, the external control system activates the forward and reverse motor 412, causing it to rotate the lead screw 413. This, in turn, causes the slide 414 to move along the outer surface of the lead screw 413, thereby driving the corresponding drive gear 410 to rotate. The drive gear 410 drives the corresponding output shaft 406 to rotate, which in turn drives the driven gear 407 to rotate. The rotation frequency of the output shaft 406 is controlled by a speed reducer 40. 5. After adjusting the speed, the output is transmitted through the rotating shaft 404. The rotating shaft 404 drives the corresponding molecular sieve 403 to rotate clockwise. When the molecular sieve 403 rotates to the position where the external auxiliary frame contacts the inner bottom surface of the connecting pipe 401, the toothed rack 415 moves to the position where it is separated from the driving gear 410, thus realizing the storage of the saturated molecular sieve 403. The toothed rack 415 continues to move forward with the rotation of the lead screw 413. When it moves to the position where it meshes with another driving gear 410, it will drive the rotating shaft 404 corresponding to the driving gear 410 to rotate, thereby driving the molecular sieve corresponding to the rotating shaft 404 to rotate. 403 rotates upwards until the outer surface of the auxiliary frame portion of the molecular sieve 403 contacts the inner top surface of the connecting pipe 401. When the molecular sieve 403 rotates to a position perpendicular to the fixed plate 408, it can continue to adsorb moisture from the gas. The gas adsorbed into the connecting pipe 401 then re-enters the activated carbon box 201 through the return pipe 10. This cycle continues until the free moisture in the saturated activated carbon is adsorbed to the required level. Then, the exhaust fan 402 can be turned off. In addition, during the movement of the slide 414, the connecting rod 416 also moves, thereby driving the positive electrode magnet connected to it to move. 417 moves forward, thereby causing the corresponding negative electrode magnet 419 to move, which in turn pushes the dew point meter 420 forward to the side of another molecular sieve 403 near the reflux pipe 10. The automatic movement of the dew point meter 420 facilitates the testing of the saturation of each water-adsorbing molecular sieve 403. After the water in the activated carbon is removed, the movement of the toothed rack 415 rotates all the molecular sieves 403 in the connecting pipe 401 to a horizontal position. This activates the hydraulic rod 502 corresponding to the connecting pipe 401, causing it to extend and move the sealing plate 503 downwards until the outer surface of the sealing plate 503 moves to a position similar to... Figure 5The outer surface of the auxiliary rod at the outlet of the connecting pipe 401, as shown, is sealed by the sealing plate 503, which is made of a rubber material with sealing properties. This seals the molecular sieve 403. Then, the negative pressure pump 504 is activated, driving the inlet pipe 505 to draw gas into the connecting pipe 401, creating a negative pressure below the sealing plate 503. Under this negative pressure, the water adsorbed in the molecular sieve 403 is extracted. Once the water in the activated carbon box 201 is extracted, the fourth valve 7 corresponding to the activated carbon box 201 is opened, allowing high-temperature gas from outside to enter the activated carbon box 201, heating the activated carbon, enhancing the kinetic energy of VOCs molecules, and breaking down the adsorption. The system achieves desorption by balancing the gases. Then, the solenoid valve corresponding to the activated carbon box 201 in the VOCs exhaust pipe 8 is opened, allowing the desorbed gas to enter the catalytic combustion furnace 9. Under the action of the catalyst in the catalytic combustion furnace 9, the high-concentration VOCs undergo a deep oxidation reaction with oxygen at 250 to 400°C, generating harmless carbon dioxide and water. The external control system is electrically connected to the third valve 204, the first valve 303, the second valve 305, the air pump 306, the condenser 308, the exhaust fan 402, the speed reducer 405, the forward and reverse motor 412, the dew point meter 420, the hydraulic rod 502, the negative pressure pump 504, the fourth valve 7, and the catalytic combustion furnace 9.

[0028] The wiring diagrams for the third valve 204, first valve 303, second valve 305, air pump 306, condenser 308, exhaust fan 402, speed changer 405, forward / reverse motor 412, dew point meter 420, hydraulic rod 502, negative pressure pump 504, fourth valve 7, and catalytic combustion furnace 9 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate models are selected based on actual use. Therefore, the control methods and wiring arrangements for the third valve 204, first valve 303, second valve 305, air pump 306, condenser 308, exhaust fan 402, speed changer 405, forward / reverse motor 412, dew point meter 420, hydraulic rod 502, negative pressure pump 504, fourth valve 7, and catalytic combustion furnace 9 will not be explained in detail.

[0029] 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 described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A regeneration device for activated carbon adsorption of VOCs waste gas, characterized in that: The system includes a mounting base plate (1), an adsorption assembly (2) is provided on the top of the mounting base plate (1), the adsorption assembly (2) includes two activated carbon boxes (201) and two racks (202) for placing activated carbon, a cooling assembly (3) is also provided on the top of the mounting base plate (1), a drying assembly (4) is provided on the outer surface of the two activated carbon boxes (201), the two drying assemblies (4) include a connecting pipe (401) and a toothed rack (415), a blower (402) is provided on the inner wall of the two connecting pipes (401) through an auxiliary rod, a plurality of molecular sieves (403) are provided between the relative inner walls of the two connecting pipes (401), a rotating shaft (404) is rotatably connected to the inner wall of the plurality of molecular sieves (403), and a drive gear (410) is provided on the outer surface of the plurality of rotating shafts (404). After the waste gas in one of the activated carbon boxes (201) is adsorbed, the water vapor and some gas in the activated carbon box (201) are adsorbed onto the surface of one of the molecular sieves (403) by the corresponding exhaust fan (402) to adsorb the water vapor. When the water vapor adsorbed on the surface of a certain molecular sieve (403) is saturated, the toothed row (415) moves to rotate the saturated molecular sieve (403) to a horizontal position, and then rotates the other adjacent molecular sieve (403) to a vertical position to continue adsorbing water.

2. The activated carbon adsorption VOCs waste gas regeneration device according to claim 1, characterized in that: Both of the drying components (4) also include a speed changer (405), the output end of which is fixedly connected to an output shaft (406), and a driven gear (407) is fixedly installed at one end of the output shaft (406). Fixing plates (408) are fixedly installed on the outer surfaces of both activated carbon boxes (201), and multiple internal gear rings (409) are fixedly installed on the outer surfaces of both fixing plates (408). Mounting brackets (411) are fixedly installed on the outer surfaces of both connecting pipes (401), and forward and reverse motors (412) are fixedly installed on the outer surfaces of both mounting brackets (411) by screws.

3. The activated carbon adsorption VOCs waste gas regeneration device according to claim 2, characterized in that: The output ends of the two forward and reverse motors (412) are fixedly connected to lead screws (413). The outer surfaces of the two lead screws (413) are threaded with slides (414). The inner walls of the two slides (414) are fixed with connecting rods (416). One end of the two connecting rods (416) is provided with a positive magnet (417). Glass plates (418) are fixedly installed between the relative inner walls of the two connecting pipes (401). The inner walls of the two connecting pipes (401) are slidably connected with dew point meters (420) through auxiliary rods. The outer surfaces of the two dew point meters (420) are coupled with negative magnets (419).

4. The activated carbon adsorption VOCs waste gas regeneration device according to claim 3, characterized in that: The cooling component (3) includes a gas tank (301), the top of which is fixedly connected to an air inlet pipe (302), the outer surface of which is provided with two first valves (303), the outer surfaces of which are fixedly connected to an air outlet pipe (304), the outer surfaces of which are provided with two second valves (305), the top of which is provided with an air pump (306), the output end of which is fixedly connected to a delivery pipe (307), the top of which is provided with a condenser (308), the output end of which is fixedly connected to a lead pipe (309).

5. The activated carbon adsorption VOCs waste gas regeneration device according to claim 4, characterized in that: The outer surfaces of the two connecting pipes (401) are provided with recovery components (5), and the two recovery components (5) include load racks (501). The inner top surfaces of the two load racks (501) are provided with hydraulic rods (502). The bottom ends of the two hydraulic rods (502) are fixedly connected with sealing plates (503). The bottoms of the two connecting pipes (401) are fixedly installed with negative pressure pumps (504) by screws. The input end of the negative pressure pump (504) is fixedly connected with an inlet pipe (505), and the output end of the negative pressure pump (504) is fixedly connected with an outlet pipe (506).

6. The activated carbon adsorption VOCs waste gas regeneration device according to claim 5, characterized in that: The adsorption assembly (2) also includes a smoke inlet pipe (203), and two third valves (204) are provided on the outer surface of the smoke inlet pipe (203). The bottom of the two activated carbon boxes (201) is fixedly connected to the top of the mounting base plate (1), and the bottom end of the smoke inlet pipe (203) is fixedly inserted into the interior of the two activated carbon boxes (201).

7. The activated carbon adsorption VOCs waste gas regeneration device according to claim 5 or 6, characterized in that: The outer surfaces of the two connecting pipes (401) are fixedly connected to return pipes (10), and one end of each of the two return pipes (10) is fixedly inserted into the interior of the two activated carbon boxes (201). The outer surfaces of the two return pipes (10) are provided with one-way valves (11). The outer surfaces of the two activated carbon boxes (201) are fixedly connected to a VOCs exhaust pipe (8). A catalytic combustion furnace (9) is provided on the top of the mounting base plate (1). One end of the VOCs exhaust pipe (8) is coupled to the air inlet of the catalytic combustion furnace (9). The outer surfaces of the two activated carbon boxes (201) are fixedly connected to high-temperature pipes (6), and the outer surfaces of the two high-temperature pipes (6) are provided with fourth valves (7).

8. The activated carbon adsorption VOCs waste gas regeneration device according to claim 7, characterized in that: The outer surfaces of the two connecting pipes (401) are fixedly connected to the inner walls of the two activated carbon boxes (201), the plurality of rotating shafts (404) are divided into two groups, and the two ends of each group of rotating shafts (404) extend movably through to the outside of the two connecting pipes (401), the input ends of the plurality of speed changers (405) are fixedly connected to one end of the plurality of rotating shafts (404), the outer surfaces of the plurality of driven gears (407) are meshed with the inner walls of the plurality of internal gear rings (409), and the plurality of output shafts (405) are fixedly connected to the inner walls of the two connecting pipes (401). 06) The output shaft (406) of each group is divided into two groups. One end of each group's output shaft (406) is movably extended to the outside of the two fixed plates (408). The multiple drive gears (410) are divided into two groups. The outer surface of each group's drive gear (410) is sequentially meshed with the outer surface of the two gear racks (415). The outer surfaces of the two slides (414) are slidably connected to the inner walls of the two mounting brackets (411). The multiple positive magnets (417) are magnetically attracted to the multiple negative magnets (419).

9. The activated carbon adsorption VOCs waste gas regeneration device according to claim 8, characterized in that: The bottom of the gas tank (301) is fixedly connected to the top of the mounting base plate (1) by screws. The bottom end of the air inlet pipe (302) is fixedly inserted into the interior of the two activated carbon boxes (201). The input end of the air pump (306) is fixedly connected to one end of the air outlet pipe (304). One end of the delivery pipe (307) is coupled to the input end of the condenser (308). One end of the lead pipe (309) is fixedly inserted into the interior of the gas tank (301).

10. The activated carbon adsorption VOCs waste gas regeneration device according to claim 9, characterized in that: The bottoms of the two load racks (501) are fixedly connected to the tops of the two connecting pipes (401), the bottom ends of the two hydraulic rods (502) are movably inserted into the interior of the two connecting pipes (401), the outer surfaces of the two sealing plates (503) slide against the inner walls of the two connecting pipes (401), and one end of the two liquid inlet pipes (505) is fixedly inserted into the interior of the two connecting pipes (401).

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