Coking waste gas treatment device

Abstract

The utility model relates to the field of coking waste gas treatment, and discloses a coking waste gas treatment device which comprises an activated carbon box, a transmission mechanism, a drawer frame and an activated carbon bearing frame, a transverse insertion opening is formed in the activated carbon box, the drawer frame is installed in the insertion opening in a drawing mode, a plurality of rotatable activated carbon bearing frames are arranged in the drawer frame side by side in the transverse direction of the drawer frame, and a transmission mechanism is arranged in the activated carbon box. When the drawer frame is inserted into the insertion opening, the transmission mechanism is driven to enable the activated carbon bearing frame to rotate from the vertically upward direction to the side direction of the drawer frame, and when the drawer frame is pulled out of the insertion opening, the transmission mechanism is driven to enable the activated carbon bearing frame to rotate from the side direction of the drawer frame to the vertically upward direction; according to the utility model, the purification treatment effect can be effectively improved, and the mode is only improved design on the basis of the original transverse drawer box and the activated carbon box with the transverse insertion opening, so that the activated carbon box and the drawer box do not need to be redesigned and replaced, the work amount is reduced, and the cost can be greatly saved.

Description

Technical Field

[0001] The utility model relates to the technical field of coking waste gas treatment, and more specifically, to a coking waste gas treatment device. Background Art

[0002] A coking plant is a professional factory that produces metallurgical coke and smelts coking products, processes and recycles them. Metallurgical coke is the fuel for steelmaking. A coking plant generates a large amount of harmful waste gas during the production process, mainly from the coking workshop and the sulfurization workshop. The main pollutants in the waste gas include gray-black dust, particulate dust, toluene, xylene, ethylbenzene, ethylheptane, non-methane hydrocarbons and other pollutants. The waste gas generated by coking needs to be treated before it can be discharged. Usually, there are two major treatment methods, namely physical treatment and chemical treatment. Among them, filtration and activated carbon adsorption are two important methods in physical treatment.

[0003] At present, the activated carbon adsorption mechanism commonly used in coking plants includes an activated carbon box and a pull-out drawer box arranged in the activated carbon box. The drawer box is arranged horizontally in the activated carbon box with its port facing upward, and is used to hold activated carbon. During treatment, the exhaust gas passes horizontally through the inside of the activated carbon box along the side of the drawer box. The side of the drawer box is the windward side of the exhaust gas, and the exhaust gas flows along the width direction of the drawer box. Compared with the side of the drawer box, the top surface area of ​​the drawer box is larger. If the drawer box is arranged vertically so that its top surface is the windward side, the effect of activated carbon adsorption and purification can be greatly improved.

[0004] To set the drawer box vertically, it is necessary to change the horizontal drawer box socket on the existing activated carbon box to a vertical drawer box socket, which requires redesigning the activated carbon box. However, the overall volume of the activated carbon box is large, and many materials are used. It also involves multiple process steps such as curling, opening holes, and assembly. There are also flanges on both sides of the activated carbon box for connecting the gas path. The cost of designing and manufacturing and replacing the activated carbon box is huge. If the activated carbon box is redesigned, the original horizontal drawer box also needs to be replaced with a vertical one. Therefore, based on the existing horizontal drawer box socket and horizontal drawer box, there is an urgent need for a transformation method that can increase the windward surface of the drawer box, improve its purification treatment effect, and require small changes and low costs. Utility Model Content

[0005] The utility model aims to overcome the defects of the above-mentioned prior art and provide a coking waste gas treatment device for solving the technical problems that the existing horizontal activated carbon drawer rack has a small windward surface, an unsatisfactory purification treatment effect, and a high cost for redesign.

[0006] The technical solution adopted by the utility model is a coking waste gas treatment device, comprising an activated carbon box, a transmission mechanism, a drawer rack and an activated carbon supporting frame; a horizontal insertion port is arranged on the activated carbon box, the drawer rack is installed in the insertion port in a pull-out manner, a plurality of rotatable activated carbon supporting frames are arranged in parallel along the horizontal direction in the drawer rack, and a transmission mechanism is arranged in the activated carbon box; when the drawer rack is inserted into the insertion port, the transmission mechanism is driven to rotate the activated carbon supporting frame from vertically upward to sideways toward the drawer rack, and when the drawer rack is pulled out of the insertion port, the transmission mechanism is driven to rotate the activated carbon supporting frame from sideways toward the drawer rack to vertically upward.

[0007] The transmission mechanism only plays a transmission role, and a mechanical mechanism with a transmission function in the prior art that can drive the activated carbon carrying frame to rotate through the action of the drawer frame can be selected. This scheme does not redesign the activated carbon box and the drawer frame, but installs a number of parallel and rotatable activated carbon carrying frames in the drawer frame, and the activated carbon carrying frame is a carrier for holding activated carbon; the drawer box can be transformed into a drawer frame by cutting, and a number of parallel activated carbon carrying frames are equivalent to the activated carbon loaded in the drawer box before the improvement after being loaded with activated carbon. The difference from the improvement is that in this scheme, when the drawer frame is inserted into the activated carbon box, the insertion action can make the top of the larger area of ​​the several activated carbon carrying frames rotate from vertically upward to sideways toward the drawer frame, that is, become the windward side, which can effectively improve its purification treatment effect, and this method is only an improved design based on the original horizontal drawer box and the activated carbon box with a horizontal insertion port, without the need to redesign and replace the activated carbon box and the drawer box, reducing the amount of engineering and greatly saving costs.

[0008] Furthermore, the transmission mechanism includes a rack, a driving gear and a gear set; the rack is fixed in the activated carbon box, and the drawer frame is rotatably connected with a driving gear corresponding to a plurality of activated carbon bearing frames, and the driving gear is used to drive the corresponding activated carbon bearing frames to rotate. The drawer frame is provided with a gear set, and the rack is connected to the driving gear through the gear set. When the drawer frame is inserted from the insertion port of the activated carbon box, the rack drives the driving gear to rotate through the gear set, and the driving gear drives the activated carbon bearing frame to rotate. When the drawer frame is inserted into the rear end of the activated carbon box, the activated carbon bearing frame in the drawer frame is just driven to rotate to the side of the drawer frame, that is, the top of the larger area rotates to the windward side, which can effectively improve the effect of treating and purifying exhaust gas. The transmission method of the rack and gear set has high transmission accuracy and small transmission error, and can accurately rotate the activated carbon bearing frame to the side of the drawer frame.

[0009] Furthermore, the gear set includes a second transmission gear, a first transmission gear and a steering gear which are respectively rotatably connected to the drawer frame, the steering gear is respectively meshed with the rack and the second transmission gear, and the first transmission gear is respectively meshed with the second transmission gear and the driving gear. The steering gear mainly converts the horizontal linear motion of the rack into vertical rotational motion, and plays a steering role. The first transmission gear and the second transmission gear are mainly used to transmit power. The activated carbon bearing frame can be accurately rotated by the steering gear, the first transmission gear and the second transmission gear to ensure the rotation accuracy.

[0010] Furthermore, a protection box is provided at the inner end of the activated carbon box, and the driving gear, the first transmission gear, the second transmission gear and the steering gear are all provided in the protection box. The protection box can isolate the exhaust gas from the outside, effectively preventing the sticky substances in the exhaust gas from adhering to the gear set, and can play a good protective role on the driving gear, the first transmission gear and the second transmission gear, so as to increase the service life of the driving gear, the first transmission gear and the second transmission gear.

[0011] Furthermore, the activated carbon carrier frame is provided with a grid plate for closing its port, and locking components for fixing the grid plate are arranged on opposite sides of the port of the activated carbon carrier frame. The activated carbon can be closed in the activated carbon carrier frame by the grid plate, and when the activated carbon carrier frame rotates, the activated carbon inside is blocked by the grid plate and will not fall out, and the locking component is used to fix the grid plate to the port of the activated carbon carrier frame, so that the grid plate blocks the port of the activated carbon carrier frame.

[0012] Furthermore, the locking assembly includes a guide block, an unlocking hole, a folding rod, a spring and a slide groove; a notch is provided on the side edge of the port of the activated carbon carrying frame near the drawer frame, the slide groove is provided on the bottom end face of the notch, the guide block is slidably connected in the slide groove, a spring is provided between the guide block and the side end face of the notch, the folding rod is provided between the guide block and the side end face of the notch, and is movably connected to the guide block and the side end face of the notch respectively, the folding part of the folding rod can extend toward the inner side of the activated carbon carrying frame, and the unlocking hole is provided on the drawer frame; when the activated carbon carrying frame is horizontal, the guide block is inserted into the unlocking hole, and the folding rod is straightened. When the drawer rack is inserted into the activated carbon box through the insertion port, the activated carbon carrying frame rotates in the vertical direction. Due to the guiding effect of the guiding inclined surface on the guide block, the guide block slides out of the unlocking hole, the spring is compressed, the folding rod is folded, and the folded part of the folding rod extends to the inside of the activated carbon carrying frame to lock the grid plate and prevent the grid plate from escaping from the port of the activated carbon carrying frame. The locking assembly provided in this solution is locked as the activated carbon carrying frame rotates when the drawer rack is inserted. When the drawer rack is pulled out, the guide block is inserted into the unlocking hole and the folding rod is straightened, thereby releasing the restriction on the grid plate. This method does not require additional operation of the locking assembly, and is easier to operate, which can effectively improve the user experience and the efficiency of replacing activated carbon.

[0013] Furthermore, a gas sealing plate is rotatably connected to the top of the inner insertion port of the activated carbon box, and the gas sealing plate can be rotated to abut against the top of the activated carbon box, and the activated carbon box insertion port is closed when the gas sealing plate is in a vertical position. The gas sealing plate can rotate without affecting the normal insertion of the drawer rack from the activated carbon box insertion port, and when the drawer rack is pulled out from the activated carbon box insertion port, the gas sealing plate can be rotated vertically by gravity to close the activated carbon box insertion port, that is, automatic gas sealing is achieved when the drawer rack is pulled out, and there is no need to stop the machine when changing the activated carbon, which further improves the user experience and does not affect the production capacity.

[0014] Furthermore, the drawer racks are arranged in parallel in the activated carbon box and are not less than two rows. The main purpose of setting not less than two rows is to achieve the replacement of activated carbon without stopping the machine. When the first row is replaced, the activated carbon in the second row of activated carbon support frame can still play a filtering effect without stopping the machine. When the second row is replaced, the activated carbon in the first row of activated carbon support frame can still play a filtering effect without stopping the machine. In this way, the exhaust gas will not be leaked and purified, thereby ensuring the purification of the exhaust gas during replacement.

[0015] Furthermore, the activated carbon box is provided with an air inlet and an air outlet on two opposite sides, the air inlet of the activated carbon box is connected to a pretreatment box through a pipeline, and the air outlet of the activated carbon box is connected to an air outlet pipe through a flange. The pretreatment box is used to perform preliminary filtration on the large dust particles entering, and the air outlet pipe is used to output the purified flue gas, and a gas passage is formed in the activated carbon box along the side of the activated carbon bearing frame.

[0016] Furthermore, the two opposite sides of the pretreatment box are respectively provided with an air inlet and an air outlet, the air outlet of the pretreatment box is connected to the air inlet of the activated carbon box through a pipeline, the pretreatment box is provided with a box door, and a plurality of filters are provided in the pretreatment box. The filter is used to filter large particles of dust and can play a role of preliminary filtration, which is more convenient for subsequent purification of activated carbon. The filter can be cleaned and replaced by opening the box door, which is more convenient for subsequent cleaning and maintenance.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: in this solution, when the activated carbon box is inserted into the drawer rack, the insertion action can make the top ends of several activated carbon support frames with larger areas rotate from vertically upward to sideways toward the drawer rack, that is, become the windward side, which can effectively improve the purification treatment effect. Moreover, this method is only an improved design based on the original horizontal drawer box and the activated carbon box with a horizontal insertion port. There is no need to redesign and replace the activated carbon box and the drawer box, which reduces the amount of engineering work and can greatly save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the internal structure of the activated carbon box of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the transmission mechanism of the utility model.

[0021] Figure 4 It is a structural schematic diagram of the locking assembly of the utility model.

[0022] Figure 5 It is a schematic diagram of the structure inside the pretreatment box of the utility model.

[0023] In the figure: 1. activated carbon box, 2. pretreatment box, 3. drawer rack, 4. air outlet pipe, 5. box door, 6. activated carbon bearing frame, 7. grid plate, 8. air sealing plate, 9. protective box, 10. rack, 11. first connecting rod, 12. driving gear, 13. first transmission gear, 14. second transmission gear, 15. steering gear, 16. guide block, 17. unlocking hole, 18. spring, 19. slide groove, 20. second connecting rod, 21. folding rod, 22. filter screen, 23. insertion port, 24. gear set, 25. locking assembly, 26. transmission mechanism. DETAILED DESCRIPTION

[0024] The drawings of the present invention are only used for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0025] like Figure 1-5 As shown, the present scheme discloses a coking waste gas treatment device, including two parts: a pretreatment part and an activated carbon treatment part; wherein the activated carbon treatment part includes an activated carbon box 1, a transmission mechanism 26, a drawer rack 3 and an activated carbon supporting frame 6, and the pretreatment part includes a pretreatment box 2.

[0026] A plurality of drawer racks 3 are slidably connected in the activated carbon box 1, and two activated carbon bearing frames 6 are rotatably connected in each drawer rack 3. The inner wall of the activated carbon bearing frame 6 is provided with a plurality of through holes, and a plurality of partitions are fixedly provided at the bottom of the activated carbon bearing frame 6. The bottom of the activated carbon bearing frame 6 is provided with a plurality of ventilation holes; a protective box 9 is fixed at the inner end of the drawer rack 3, and two rotatable driving gears 12 are provided in the protective box 9, and the two driving gears 12 are respectively fixedly connected to the two activated carbon bearing frames 6 through shafts; two first transmission gears 13 and two second transmission gears 14 are also provided in the protective box 9. , two steering gears 15, the two driving gears 12 are respectively meshed with the two first transmission gears 13, the two first transmission gears 13 are respectively meshed with the two second transmission gears 14, the two second transmission gears 14 are respectively meshed with the two steering gears 15, the end faces of the driving gear 12, the first transmission gear 13 and the second transmission gear 14 are parallel to the bottom end face of the drawer frame 3, the end face of the steering gear 15 is perpendicular to the bottom end face of the drawer frame 3, the second transmission gear 14 and the steering gear 15 can choose bevel gears, spur gears with teeth at the end, etc., to play a reversing role.

[0027] A rack 10 is fixed inside the activated carbon box 1, and the length direction of the rack 10 is the same as the pulling and pulling direction of the drawer frame 3. A hole for inserting the rack 10 is provided under the drawer frame 3. When the drawer frame 3 is inserted into or pulled out of the activated carbon box 1, the rack 10 is respectively engaged with the two steering gears 15.

[0028] The top side of the insertion port 23 on the activated carbon box 1 is rotatably connected with a sealing plate 8 that can rotate into the activated carbon box 1. When the drawer rack 3 is inserted, the drawer rack 3 pushes the sealing plate 8 to rotate above it, and the end of the drawer rack 3 closes the insertion port 23 of the activated carbon box 1. When the drawer rack 3 is pulled out, the sealing plate 8 is rotated by gravity to close the end of the activated carbon box 1. A groove is provided at the bottom of the sealing plate 8, and the groove is plugged into the front end of the rack 10 to adapt to the rack 10; when there are two activated carbon supporting frames 6, two driving gears 12 are correspondingly provided. At this time, the rack 10 is designed as a double-sided rack, and the teeth on both sides drive the two driving gears 12 to rotate through the gear set 24 respectively; when there are multiple activated carbon supporting frames 6, the rack 10 can be designed as a cylindrical rack with a circular cross-section, so that it can engage with multiple gear sets 24 and drive multiple driving gears 12 accordingly; of course, multiple racks 10 can also be provided to drive them separately, or other methods can be used to drive the driving gear 12 to rotate.

[0029] Two locking components 25 are arranged on both sides of the activated carbon carrying frame 6, and the locking components 25 include a guide block 16, an unlocking hole 17, a folding rod 21, a spring 18 and a slide groove 19. A notch is arranged on the side edge of the port of the activated carbon carrying frame 6 near the drawer frame 3, and a slide groove 19 is arranged on the bottom end surface of the notch. The guide block 16 is slidably connected in the slide groove 19. The guide block 16 has a first end and a second end opposite to each other. The first end of the guide block 16 is provided with a guide slope, and the guide slope faces the activated carbon carrying frame 6 when the activated carbon box 1 is pulled out. In the rotation direction of the activated carbon supporting frame 6, an unlocking hole 17 is provided on the end face of the protective box 9 close to the activated carbon supporting frame 6, and the guide block 16 is plugged into the unlocking hole 17. The second end of the guide block 16 is rotatably connected to the first connecting rod 11, and the notch end face opposite to the guide block 16 is rotatably connected to the second connecting rod 20. The first connecting rod 11 and the second connecting rod 20 are rotatably connected to form a folding rod 21, and a spring 18 is arranged between the second end of the guide block 16 and the notch end face opposite to the guide block 16, and the spring 18 is located below the folding rod 21.

[0030] An air inlet and an air outlet are respectively provided on two opposite sides of the activated carbon box 1, and an air outlet pipe 4 is fixedly connected to the air outlet end of the activated carbon box 1. The air inlet end of the activated carbon box 1 is connected to the pretreatment box 2. An air inlet and an air outlet are respectively provided on two opposite sides of the pretreatment box 2, and the air outlet end of the pretreatment box 2 is connected to the air inlet end of the activated carbon box 1 through a pipe; four legs are provided at the bottom of the activated carbon box 1, the air outlet pipe 4 is connected to the air outlet end of the activated carbon box 1 through a flange, and the air outlet end of the pretreatment box 2 is connected to the pipe through a flange, and a box door 5 is rotatably connected to the pretreatment box 2, and a handle is provided on the box door 5 to facilitate the opening and closing of the box door 5, and a plurality of filters 22 are provided in the pretreatment box 2, and the filter screens 22 are used to filter dust and oil in the exhaust gas, and the filter screens 22 are vertically arranged between the air inlet end of the pretreatment box 2 and the air outlet end of the pretreatment box 2.

[0031] A grid plate 7 is provided on the upper part of the activated carbon carrying frame 6. When the drawer rack 3 is inserted into the activated carbon box 1, the activated carbon box 1 pushes the guide block 16 to move, the guide block 16 pushes the spring 18 to be compressed, and the connection of the folding rod 21 rotates toward the inside of the activated carbon carrying frame 6 and above the grid plate 7, thereby suppressing the grid plate 7.

[0032] Instructions for use: During operation, the exhaust gas first passes through the pretreatment box 2, and the exhaust gas is filtered out of dust and sticky particles through the filter 22 to avoid subsequent impact on the activated carbon treatment. The filtered exhaust gas passes through the activated carbon box 1, and is adsorbed by the activated carbon for subsequent treatment or purification and discharge.

[0033] When the activated carbon is to be replaced, the drawer rack 3 is first pulled out of the activated carbon box 1. During the pulling-out process, the rack 10 under the drawer rack 3 drives the steering gear 15 to rotate, and the rotation of the steering gear 15 drives the second transmission gear 14 to rotate, and the second transmission gear 14 drives the first transmission gear 13 to rotate, and the rotation of the first transmission gear 13 drives the driving gear 12 to rotate, and the rotation of the driving gear 12 causes the corresponding activated carbon bearing frame 6 to rotate; when the drawer rack 3 continues to be pulled out, until the steering gear 15 and the rack 10 are no longer engaged, the activated carbon bearing frame 6 rotates to a horizontal level, and the guide block 16 slides into the unlocking hole 17 under the action of the spring 18, so that the first connecting rod 11 and the second connecting rod 20 are retracted into the notch, and the grid plate 7 on the activated carbon bearing frame 6 is released. When the drawer rack 3 is fully pulled out, the seal The air plate 8 is no longer supported by the drawer rack 3 and rotates under the action of gravity to block the insertion port 23. Then the staff removes the grid plate 7 and replaces it with new activated carbon. After the replacement is completed, the grid plate 7 is placed on the activated carbon supporting frame 6, and the drawer rack 3 is pushed into the activated carbon box 1. At this time, the air sealing plate 8 is lifted up and continues to be pushed in so that the rack 10 is engaged with the steering gear 15, and under the action of the second transmission gear 14, the first transmission gear 13, and the driving gear 12, the activated carbon supporting frame 6 is rotated to a certain inclination angle, preferably to a vertical state, so that the exhaust gas flow and the drawer rack 3 The facing area can be increased, and the activated carbon supporting frame 6 rotates so that the unlocking hole 17 presses the guide slope of the guide block 16, causing it to slide into the slide groove 19, so that the folding rod 21 moves out of the folding position to restrict the grid plate 7.

[0034] Compared with the related art, the coking waste gas treatment device provided by the utility model has the following beneficial effects: the activated carbon carrying frame 6 can automatically rotate a certain angle as the drawer rack 3 slides in the activated carbon box 1, thereby increasing the facing area between the waste gas and the activated carbon and increasing the absorption efficiency of the activated carbon; the locking assembly 25 can automatically unlock and lock the grid plate 7 as the drawer rack 3 is pulled in the activated carbon box 1; the air sealing plate 8 can prevent the waste gas from overflowing the activated carbon box 1 when the activated carbon is replaced, thereby achieving the purpose of replacing the activated carbon without stopping the waste gas treatment device, and effectively improving the efficiency of the waste gas treatment.

[0035] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A coking waste gas treatment device, characterized in that: It comprises an activated carbon box (1), a transmission mechanism (26), a drawer frame (3) and an activated carbon carrying frame (6); The activated carbon box (1) is provided with a transverse insertion opening (23), the drawer frame (3) is installed in the insertion opening (23) in a pull-out manner, a plurality of rotatable activated carbon bearing frames (6) are arranged in parallel in a transverse direction in the drawer frame (3), and a transmission mechanism (26) is provided in the activated carbon box (1); when the drawer frame (3) is inserted into the insertion opening (23), the transmission mechanism (26) is driven to rotate the activated carbon bearing frame (6) from vertically upward to sideways toward the drawer frame (3), and when the drawer frame (3) is pulled out of the insertion opening (23), the transmission mechanism (26) is driven to rotate the activated carbon bearing frame (6) from sideways toward the drawer frame (3) to vertically upward.

2. A coking waste gas treatment device according to claim 1, characterized in that: The transmission mechanism (26) comprises a rack (10), a driving gear (12) and a gear set (24); The rack (10) is fixed in the activated carbon box (1); a driving gear (12) corresponding to a plurality of activated carbon bearing frames (6) is rotatably connected to the drawer frame (3); the driving gear (12) is used to drive the corresponding activated carbon bearing frame (6) to rotate; a gear group (24) is provided on the drawer frame (3); and the rack (10) is connected to the driving gear (12) through the gear group (24).

3. A coking waste gas treatment device according to claim 2, characterized in that: The gear set (24) comprises a second transmission gear (14), a first transmission gear (13) and a steering gear (15) which are respectively rotatably connected to the drawer frame (3); the steering gear (15) is respectively meshed with the rack (10) and the second transmission gear (14); and the first transmission gear (13) is respectively meshed with the second transmission gear (14) and the driving gear (12).

4. A coking waste gas treatment device according to claim 3, characterized in that: A protection box (9) is arranged at the inner end of the activated carbon box (1), and the driving gear (12), the first transmission gear (13), the second transmission gear (14) and the steering gear (15) are all arranged in the protection box (9).

5. The coking waste gas treatment device according to claim 1, characterized in that: The activated carbon carrying frame (6) is provided with a grid plate (7) for closing its port, and locking components (25) for fixing the grid plate (7) are arranged opposite to each other on both sides of the port of the activated carbon carrying frame (6).

6. A coking waste gas treatment device according to claim 5, characterized in that: The locking assembly (25) comprises a guide block (16), an unlocking hole (17), a folding rod (21), a spring (18) and a slide groove (19); a notch is arranged on the side edge of the port of the activated carbon bearing frame (6) near the drawer frame (3); the slide groove (19) is arranged on the bottom end surface of the notch; the guide block (16) is slidably connected in the slide groove (19); a spring (18) is arranged between the guide block (16) and the side end surface of the notch; the folding rod (21) is arranged between the guide block (16) and the side end surface of the notch, and is movably connected to the guide block (16) and the side end surface of the notch respectively; the folding part of the folding rod (21) can extend toward the inside of the activated carbon bearing frame (6); the unlocking hole (17) is arranged on the drawer frame (3); when the activated carbon bearing frame (6) is horizontal, the guide block (16) is inserted into the unlocking hole (17), and the folding rod (21) is straightened.

7. The coking waste gas treatment device according to claim 1, characterized in that: The top of the insertion port (23) inside the activated carbon box (1) is rotatably connected to an air sealing plate (8), and the air sealing plate (8) can be abutted against the top of the activated carbon box (1) by rotation. When the air sealing plate (8) is in a vertical position, the insertion port (23) of the activated carbon box (1) is closed.

8. A coking waste gas treatment device according to claim 7, characterized in that: The drawer racks (3) are arranged in parallel in the activated carbon box (1) in no less than two rows.

9. A coking waste gas treatment device according to any one of claims 1 to 8, characterized in that: An air inlet end and an air outlet end are respectively arranged on two opposite sides of the activated carbon box (1); the air inlet end of the activated carbon box (1) is connected to a pretreatment box (2) via a pipeline, and the air outlet end of the activated carbon box (1) is connected to an air outlet pipeline (4) via a flange.

10. A coking waste gas treatment device according to claim 9, characterized in that: An air inlet and an air outlet are respectively arranged on two opposite sides of the pretreatment box (2); the air outlet of the pretreatment box (2) is connected to the air inlet of the activated carbon box (1) via a pipeline; a box door (5) is arranged on the pretreatment box (2); and a plurality of filter screens (22) are arranged inside the pretreatment box (2).

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