Tail gas treatment device and method for chemical reaction kettle

Abstract

The invention relates to the technical field of reaction kettle tail gas treatment devices, and discloses a chemical reaction kettle tail gas treatment device and method.The chemical reaction kettle tail gas treatment device comprises an outer cover, wherein a gas inlet pipe is detachably installed on a reaction kettle tail gas pipe through bolts; and an inner cylinder is fixedly connected to the inner side of the outer cover, a rotating frame is coaxially and rotatably embedded in the inner cylinder, a self-locking switching module is arranged at the top of the rotating frame and used for changing the position of the rotating frame, and a second frame is fixedly installed in a ventilation opening formed in the side wall of the rotating frame in a penetrating mode. According to the tail gas treatment device and method for the chemical reaction kettle, a cleaning and filtering double-state station is arranged, a filtering structure can be automatically and regularly switched, the device can continuously filter waste gas, shutdown maintenance of the filtering structure is not needed, after the filtering structure is switched in place, double-face scrubbing operation can be conducted on the filtering structure with greasy dirt, and the working efficiency is improved. And oil stains are effectively removed.

Description

Technical Field

[0001] This invention relates to the technical field of reactor tail gas treatment devices, specifically a tail gas treatment device and method for chemical reactors. Background Technology

[0002] Chemical reaction vessels are widely used in petrochemical production. During operation, these vessels generate exhaust gases containing particulate pollutants such as grease and dust. To reduce the adverse impact of industrial activities on the atmospheric environment, exhaust gas treatment devices are needed to render the waste gas harmless. However, existing reaction vessel exhaust gas treatment devices still have some problems:

[0003] Commercially available chemical reactor tail gas treatment devices are difficult to continuously filter and purify tail gas. After long-term use, the devices need to be shut down for maintenance and cleaning of the filter components, which reduces work efficiency. In addition, the devices are difficult to quickly remove oil stains adhering to the filter components.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing exhaust gas treatment devices. Summary of the Invention

[0005] The purpose of this invention is to provide a tail gas treatment device and method for chemical reactors, in order to solve the following problems of existing reactor tail gas treatment devices mentioned in the background art: it is difficult for commercially available chemical reactor tail gas treatment devices to continuously filter and purify tail gas; after long-term use, the device needs to be shut down for maintenance to clean the filter components, thereby reducing working efficiency; and the device is difficult to quickly remove oil stains attached to the filter components.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tail gas treatment device for a chemical reaction vessel, comprising:

[0007] The air inlet pipe is detachably mounted on the tail gas pipe of the reactor by bolts. It also includes: an inner cylinder fixedly connected to the inner side of the outer cover, a rotating frame coaxially rotatably embedded inside the inner cylinder, and a self-locking switching module is provided on the top of the rotating frame. The self-locking switching module is used to change the position of the rotating frame. A second frame is fixedly installed in the air vent that is opened through the side wall of the rotating frame, and a side filter plate for filtering dust and grease in the exhaust gas is fixedly connected to the inner wall of the second frame.

[0008] A grease removal mechanism is installed on the upper inner side of the second frame. The grease removal mechanism is used to squeeze and clean the side filter plate.

[0009] Preferably, the symmetrically arranged air inlets on the side wall of the inner cylinder are located inside the outer cover, and the air inlets are connected to the vents on the rotating frame. The bottom surface of the inner cylinder has symmetrically distributed discharge ports, and the axis of symmetry of the discharge ports and the axis of symmetry of the air inlets on the side wall of the inner cylinder are perpendicular to each other. A collection cylinder is arranged below the discharge ports. The bottom surface of the inner wall of the inner cylinder and the bottom surface of the rotating frame are fitted together. The bottom of the rotating frame has a drain port for discharging sewage. An exhaust pipe for discharging purified gas is coaxially fixed and installed through the bottom of the rotating frame, and the air inlets on both sides of the top of the exhaust pipe face the vents on the rotating frame to form an airflow passage. The collection cylinder is fixedly connected to the bottom surface of the inner cylinder and the side wall of the exhaust pipe, so that the sewage in the rotating frame can enter the collection cylinder through the discharge port.

[0010] Preferably, the fixed shaft at the center of the inner cylinder is rotatably connected to the top of the rotating frame, and the bottom surface of the fixed shaft is coaxially fixedly connected to the upper end of the exhaust pipe. An inner spray frame is fixedly installed through the fixed shaft of the inner cylinder, and the lower part of the inner spray frame is fixedly installed through the exhaust pipe. An outer spray frame is fixedly installed through the inner top of the inner cylinder. The nozzle of the inner spray frame is directly opposite the nozzle on the outer spray frame. The inner and outer spray frames are used to spray grease cleaning agent onto the side filter plate. The nozzle of the inner spray frame is flush with the side wall of the exhaust pipe, and the nozzle of the outer spray frame is flush with the inner wall of the inner cylinder. The cleaning liquid is sprayed onto the side filter plate through the inner and outer spray frames.

[0011] Preferably, the self-locking switching module includes a limiting frame coaxially positioned directly above the rotating frame. The bottom of the limiting frame is fixedly connected to the rotating frame, and the limiting frame is rotatably sleeved on the fixed shaft of the inner cylinder. The limiting frame has four equally spaced arc grooves. A locking disc sidewall is fitted into the arc groove of the limiting frame. When the outer wall of the locking disc contacts the limiting frame, a position locking structure is formed. A through groove is provided on the sidewall of the locking disc to accommodate the rotating end of the limiting frame. One end of a pull rod is fixedly connected to the center of the bottom surface of the locking disc, and the other end of the pull rod is provided with a convex shaft. The convex shaft of the pull rod is slidably inserted into a through groove on the limiting frame, and the axis of the through groove intersects perpendicularly with the axis of the limiting frame. When the locking disc drives the limiting frame to rotate through the convex shaft at the end of the pull rod, the locking disc can drive the limiting frame to rotate through the convex shaft on the pull rod.

[0012] Preferably, the self-locking switching module further includes a drive gear disposed directly above the locking disc. The drive gear is coaxially fixedly connected to the locking disc, and the drive gear is an incomplete gear. The drive gear is toothless on the side facing the through groove on the side wall of the locking disc. A rotating gear is meshed on the side of the drive gear, and the bottom connecting shaft of the rotating gear is rotatably mounted on the fixed shaft of the inner cylinder. The locking disc uses the drive gear to drive the rotating gear to rotate. An eccentric protrusion is provided on the top of the rotating gear, so that the drive gear can drive the rotating gear to rotate.

[0013] Preferably, the rotating frame has four vents evenly distributed at angles on its side wall. A swing cover is rotatably embedded in the top of the rotating frame, and a guide groove is provided on the side wall of the swing cover. Two symmetrically distributed wave grooves are provided in the guide groove, and a protrusion on a force plate is attached to the middle of the wave groove. The force plate is located on the lower outer side of the swing cover. A moving groove is provided in the top of the inner wall of the swing cover, and a protrusion on a rotating gear is attached to the moving groove. The swing cover is rotatably sleeved on the fixed shaft of the inner cylinder. The protrusion on the rotating gear can drive the swing cover to reciprocate. The force plate is slidably inserted through the top of the rotating frame, and a first frame is fixedly connected to the bottom of the force plate. The first frame is slidably embedded in the inner wall of the rotating frame. An inner filter plate is fixedly connected to the inner side of the first frame, and side filter plates are provided on both sides of the inner filter plate, so that the rotating gear can drive the swing cover to reciprocate through the protrusion.

[0014] Preferably, the grease removal mechanism includes a swing arm, which is disposed on the side of the second frame away from the first frame. One end of the swing arm is fixedly connected to a force-bearing gear, and the other end of the swing arm is rotatably mounted with a connector. The connector is slidably embedded in a transverse groove on the side wall of the pressure plate. The swing arm can drive the pressure plate to move vertically through the connector. The two end faces of the pressure plate are attached to the inner wall of the second frame. The force-bearing gear is rotatably embedded in a receiving groove of the second frame, and a toothed plate is meshed on the side of the force-bearing gear. The toothed plate is slidably disposed through the top of the second frame, and the top of the toothed plate is fixedly engaged with the first frame, so that the toothed plate can drive the swing arm to rotate through the force-bearing gear.

[0015] Preferably, the pressure plate is attached to the side filter plate on the side away from the connector, and a movable block is fixedly connected to the end of the pressure plate. The movable block is slidably connected through the second frame and the limiting block. A through groove on the side wall of the limiting block is used to limit the movable block in the horizontal direction. A storage box is fixedly installed through the side wall of the second frame, and a pressing plate is slidably inserted into the side wall of the storage box. The outer wall of the pressing plate and the inner wall of the storage box are elastically connected by a spring. The limiting block is slidably embedded between the inner wall of the second frame and the outer wall of the storage box. The storage box limits the limiting block in the vertical direction. An inclined surface on the movable block is provided above the top inclined surface of the pressing plate, so that the pressing plate can push the pressure plate.

[0016] The method for treating the tail gas of a chemical reactor includes the following steps:

[0017] S1: Exhaust gas enters the device through the outer cover. The exhaust gas will pass through the inner cylinder and the rotating frame in sequence. The side filter plate and the inner filter plate on the rotating frame will filter the exhaust gas. The purified exhaust gas will be discharged through the exhaust pipe.

[0018] S2: The device controls the servo motor to start, and the servo motor will drive the self-locking switching module to rotate. At this time, the locking disc in the self-locking switching module drives the limit frame to rotate at regular intervals through the pull rod. The limit frame will drive the rotating frame to adjust synchronously. When the rotating frame is in a stationary state, the drive gear in the self-locking switching module will drive the rotating gear to rotate. The rotating gear will drive the swing cover to swing back and forth. At the same time, the inner spray frame and the outer spray frame start to spray cleaning agent.

[0019] S3: The guide groove on the swing cover will drive the force plate and toothed plate to move back and forth. At this time, the toothed plate will drive the grease removal mechanism to start running. The pressure plate in the grease removal mechanism will first squeeze the side filter plate and then move downward, thereby performing a scrubbing operation on the side filter plate and the inner filter plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: The tail gas treatment device and method for the chemical reactor are equipped with a dual-state station for cleaning and filtration, and can automatically switch the filtration structure at regular intervals. The device can continuously filter the exhaust gas without stopping the filtration structure for maintenance. When the filtration structure is switched to the correct position, it can then perform a double-sided scrubbing operation on the filtration structure with oil stains, effectively removing the oil stains. The specific details are as follows:

[0021] 1. The self-locking switching module includes a limiting frame coaxially positioned above the rotating frame. The bottom of the limiting frame is fixedly connected to the rotating frame. The limiting frame has four equally spaced arc grooves. The side wall of the locking disc is fitted into the arc grooves of the limiting frame. One end of a pull rod is fixedly connected to the center of the bottom surface of the locking disc. The other end of the pull rod has a convex shaft. The convex shaft of the pull rod is slidably inserted into a through groove on the limiting frame. The drive gear is coaxially fixedly connected to the locking disc. The drive gear is an incomplete gear. A rotating gear is meshed on the side of the drive gear. An eccentric protrusion is provided on the top of the rotating gear. When the drive gear and the locking disc are rotated by the servo motor, the locking disc will drive the limiting frame to rotate at regular intervals through the convex shaft on the pull rod. At this time, the limiting frame will drive the rotating frame to rotate synchronously, causing the position of the filter structure on the rotating frame to change. At the same time, when the drive gear drives the rotating gear to rotate, the rotating gear drives the swing cover to rotate synchronously through the protrusion.

[0022] 2. The grease removal mechanism includes a swing arm. One end of the swing arm is fixedly connected to a force-bearing gear, and the other end of the swing arm is rotatably connected to a connector. The connector is slidably embedded in a transverse groove on the side wall of the pressure plate. A toothed plate is meshed on the side of the force-bearing gear. The side of the pressure plate away from the connector is attached to the side filter plate. A movable block is fixedly connected to the end of the pressure plate. A squeezing plate is slidably inserted into the side wall of the storage box. The outer wall of the squeezing plate and the inner wall of the storage box are elastically connected by a spring. A limiting block is slidably embedded between the inner wall of the second frame and the outer wall of the storage box. An inclined surface on the movable block is provided above the top inclined surface of the squeezing plate. The toothed plate can drive the swing arm to rotate through the force-bearing gear, and the swing arm will drive the pressure plate to move vertically through the connector. The pressure plate will drive the movable block to press against the squeezing plate. At this time, the pressure plate will be subjected to reverse pressure, and the pressure plate will squeeze onto the side filter plate to perform the grease cleaning operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the inner cylinder installation structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the rotating frame mounting structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the swing cover mounting structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the external spray frame installation structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the exhaust pipe installation structure of the present invention;

[0029] Figure 7This is a schematic diagram of the internal spray frame installation structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the rotating gear mounting structure of the present invention;

[0031] Figure 9 This is an exploded view of the self-locking switching module of the present invention.

[0032] Figure 10 This is a schematic diagram of the load-bearing plate installation structure of the present invention;

[0033] Figure 11 This is a schematic diagram of the second frame installation structure of the present invention;

[0034] Figure 12 This is a schematic diagram of the swing arm mounting structure of the present invention;

[0035] Figure 13 This is a schematic diagram of the installation structure of the limiting block of the present invention;

[0036] Figure 14 This is a schematic diagram of the connector installation structure of the present invention;

[0037] Figure 15 This is a schematic diagram of the movable block installation structure of the present invention.

[0038] In the diagram: 1. Outer cover; 2. Inner cylinder; 3. Rotating frame; 4. Exhaust pipe; 5. Collection cylinder; 6. Limiting frame; 7. Pull rod; 8. Locking disc; 9. Drive gear; 10. Rotating gear; 11. Moving slot; 12. Servo motor; 13. Inner spray frame; 14. Swing cover; 15. Guide slot; 16. Outer spray frame; 17. Discharge port; 18. Force plate; 19. First frame; 20. Grease removal mechanism; 2001. Swing arm; 2002. Force gear; 2003. Tooth plate; 2004. Connector; 2005. Pressure plate; 2006. Moving block; 2007. Limiting block; 2008. Storage box; 2009. Extrusion plate; 21. Second frame; 22. Side filter plate; 23. Inner filter plate. Detailed Implementation

[0039] 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.

[0040] Please see Figures 1-15 The present invention provides a technical solution: a tail gas treatment device for a chemical reaction vessel, comprising:

[0041] The outer cover 1 is detachably installed on the tail gas pipe of the reactor by bolts; it also includes: an inner cylinder 2 is fixedly connected to the inner side of the outer cover 1, a rotating frame 3 is coaxially rotatably embedded inside the inner cylinder 2, and a self-locking switching module is provided on the top of the rotating frame 3. The self-locking switching module is used to change the position of the rotating frame 3. A second frame 21 is fixedly installed in the vent through the side wall of the rotating frame 3, and a side filter plate 22 for filtering dust and grease in the exhaust gas is fixedly connected to the inner wall of the second frame 21.

[0042] A grease removal mechanism 20 is installed on the upper inner side of the second frame 21. The grease removal mechanism 20 is used to squeeze and clean the side filter plate 22.

[0043] A fixed shaft at the center of the inner cylinder 2 is rotatably mounted through the top of the rotating frame 3, and the bottom surface of the fixed shaft is coaxially and fixedly connected to the upper end of the exhaust pipe 4. An inner spray frame 13 is fixedly installed through the fixed shaft of the inner cylinder 2, and the lower part of the inner spray frame 13 is fixedly and continuously mounted on the exhaust pipe 4. An outer spray frame 16 is fixedly and continuously mounted through the inner top of the inner cylinder 2. The nozzle of the inner spray frame 13 is directly opposite the nozzle on the outer spray frame 16. The inner spray frame 13 and the outer spray frame 16 are used to spray grease cleaning agent onto the side filter plates 22. The nozzle of the inner spray frame 13 is flush with the side wall of the exhaust pipe 4, and the nozzle of the outer spray frame 16 is flush with the inner wall of the inner cylinder 2. The inner spray frame 13 and the outer spray frame 16 can spray the cleaning agent onto the corresponding side filter plates 22, while the air inlets symmetrically opened on the side wall of the inner cylinder 2 are located at... Inside the outer cover 1, the air inlet and the air vent on the rotating frame 3 are connected, and the bottom surface of the inner cylinder 2 is provided with symmetrically distributed discharge ports 17. The axis of symmetry of the discharge ports 17 and the axis of symmetry of the air inlet on the side wall of the inner cylinder 2 are perpendicular to each other. A collection cylinder 5 is provided below the discharge port 17. The bottom surface of the inner wall of the inner cylinder 2 and the bottom surface of the rotating frame 3 are fitted together. The bottom of the rotating frame 3 is provided with a drain port for discharging sewage. The bottom of the rotating frame 3 is coaxially fixed and installed with an exhaust pipe 4 for discharging purified gas. The air ports on both sides of the top of the exhaust pipe 4 face the air vent on the rotating frame 3 to form an airflow passage. The collection cylinder 5 is fixedly connected to the bottom surface of the inner cylinder 2 and the side wall of the exhaust pipe 4, so that the sewage in the rotating frame 3 can enter the collection cylinder 5 through the discharge port 17.

[0044] The self-locking switching module includes a limiting frame 6 coaxially positioned above the rotating frame 3. The bottom of the limiting frame 6 is fixedly connected to the rotating frame 3, and the limiting frame 6 is rotatably sleeved on the fixed shaft of the inner cylinder 2. The limiting frame 6 has four equally spaced arc grooves. The side wall of the locking disc 8 is fitted into the arc groove of the limiting frame 6. When the outer wall of the locking disc 8 contacts the limiting frame 6, a position locking structure is formed. The side wall of the locking disc 8 has a through groove for receiving the rotating end of the limiting frame 6. One end of a pull rod 7 is fixedly connected to the center of the bottom surface of the locking disc 8, and the other end of the pull rod 7 is provided with a convex shaft. The convex shaft of the pull rod 7 is slidably inserted into the limiting frame 6. The locking disc 8 is located within the through groove, and the axis of the through groove intersects perpendicularly with the axis of the limiting frame 6. When the locking disc 8 can drive the limiting frame 6 to rotate via the convex shaft at the end of the pull rod 7, the limiting frame 6 will drive the rotating frame 3 to rotate synchronously. Since the self-locking switching module also includes a drive gear 9 located directly above the locking disc 8, the drive gear 9 is coaxially fixedly connected to the locking disc 8. The drive gear 9 is an incomplete gear, and the side of the drive gear 9 facing the through groove on the side wall of the locking disc 8 is toothless. A rotating gear 10 is meshed on the side of the drive gear 9, and the bottom connecting shaft of the rotating gear 10 is rotatably installed inside. On the fixed shaft of cylinder 2, locking disc 8 drives rotating gear 10 to rotate via drive gear 9. Rotating gear 10 has an eccentric protrusion on its top. When pull rod 7 moves away from limit frame 6, drive gear 9 drives rotating gear 10 to rotate. The protrusion on rotating gear 10 drives rotating swing cover 14 to reciprocate. Four equidistant vents are provided on the side wall of rotating frame 3. Swing cover 14 is rotatably embedded in the top of rotating frame 3. A guide groove 15 is provided on the side wall of swing cover 14. Two symmetrically distributed wave grooves are provided on the guide groove 15, and a protrusion on force plate 18 is fitted into the middle of the wave groove. Force plate 18 is located at the lower outer part of swing cover 14. On the side, a moving groove 11 is provided on the top of the inner wall of the swing cover 14, and a protrusion on the rotating gear 10 is fitted in the moving groove 11. The swing cover 14 is rotatably sleeved on the fixed shaft of the inner cylinder 2. The protrusion on the rotating gear 10 can drive the swing cover 14 to rotate back and forth. The force plate 18 is slidably installed through the top of the rotating frame 3, and the bottom of the force plate 18 is fixedly connected to the first frame 19. The first frame 19 is slidably embedded in the inner wall of the rotating frame 3. The inner side of the first frame 19 is fixedly connected to the inner filter plate 23, and the two sides of the inner filter plate 23 are provided with side filter plates 22. At this time, the swing cover 14, which rotates back and forth, will drive the force plate 18 to move up and down back and forth through the guide groove 15.

[0045] The grease removal mechanism 20 includes a swing arm 2001, which is located on the side of the second frame 21 away from the first frame 19. One end of the swing arm 2001 is fixedly connected to a force-bearing gear 2002, and the other end of the swing arm 2001 is rotatably connected to a connecting member 2004. The connecting member 2004 is slidably embedded in a transverse groove on the side wall of the pressure plate 2005. The swing arm 2001 can drive the pressure plate 2005 to move vertically through the connecting member 2004. The two end faces of the pressure plate 2005 are attached to the inner wall of the second frame 21. The force gear 2002 is rotatably embedded in the receiving groove of the second frame 21, and a toothed plate 2003 is meshed on the side of the force gear 2002. The toothed plate 2003 slides through the top of the second frame 21, and the top of the toothed plate 2003 is fixedly snapped onto the first frame 19. The force plate 18 drives the toothed plate 2003 to move synchronously through the first frame 19, and the toothed plate 2003 drives the swing arm 2001 to rotate synchronously through the force gear 2002. The side of the pressure plate 2005 away from the connector 2004 is attached to the side filter plate 22, and... A movable block 2006 is fixedly connected to the end of the pressure plate 2005. The movable block 2006 slides through the second frame 21 and the limiting block 2007. A through groove on the side wall of the limiting block 2007 is used to limit the movable block 2006 in the horizontal direction. A storage box 2008 is fixedly installed through the side wall of the second frame 21, and a pressing plate 2009 is slidably inserted into the side wall of the storage box 2008. The outer wall of the pressing plate 2009 and the inner wall of the storage box 2008 are elastically connected by a spring. The limiting block 2007 is slidably embedded in the second frame 21. Between the inner wall of the second frame 21 and the outer wall of the storage box 2008, the storage box 2008 is used to vertically limit the limiting block 2007. The top slope of the extrusion plate 2009 is provided with a slope on the moving block 2006. At this time, the swing arm 2001 drives the pressure plate 2005 to move vertically downward through the connector 2004. The pressure plate 2005 drives the moving block 2006 to move synchronously. At this time, the extrusion plate 2009 can apply pressure to the pressure plate 2005 through the moving block 2006, so that the pressure plate 2005 starts to perform cleaning operation.

[0046] The method for treating the tail gas of a chemical reactor includes the following steps:

[0047] S1: Exhaust gas enters the device through the outer cover 1. The exhaust gas will pass through the inner cylinder 2 and the rotating frame 3 in sequence. The side filter plate 22 and the inner filter plate 23 on the rotating frame 3 will filter the exhaust gas. The purified exhaust gas will be discharged through the exhaust pipe 4. The side filter plate 22 and the inner filter plate 23 are made of high molecular fiber material.

[0048] S2: The device controls the servo motor 12 to start, which drives the locking disc 8 and the drive gear 9 to rotate. At this time, the locking disc 8 drives the limit frame 6 to rotate 90° at regular intervals through the pull rod 7. The limit frame 6 drives the rotating frame 3 to adjust synchronously. When the pull rod 7 moves away from the limit frame 6, the arc groove on the locking disc 8 and the limit frame 6 contacts to form a locking structure. When the rotating frame 3 is in a stationary state, the teeth on the drive gear 9 can drive the rotating gear 10 to rotate. The eccentrically set protrusion on the rotating gear 10 can drive the swing cover 14 to swing back and forth. At the same time, the device controls the solenoid valves of the inner spray frame 13 and the outer spray frame 16 to open and spray cleaning agent onto the corresponding side filter plate 22.

[0049] S3: The guide groove 15 on the swing cover 14 will drive the force plate 18 to move, and the force plate 18 will drive the toothed plate 2003 to move up and down reciprocally through the first frame 19. At this time, the toothed plate 2003 will drive the force gear 2002 to rotate, and the force gear 2002 will drive the swing arm 2001 to rotate by the same angle. The swing arm 2001 will drive the pressure plate 2005 to move vertically in sync through the connector 2004. At this time, the pressure plate 2005 will drive the moving block 2006 to move synchronously, so that the moving block 2006 presses against the top of the extrusion plate 2009. At this time, the pressing plate 2009 will apply pressure to the moving block 2006, and the moving block 2006 will drive the pressure plate 2005 to press horizontally against the side filter plate 22. The side filter plate 22 will be pressed against the inner filter plate 23. Then the pressure plate 2005 will move downward along the side filter plate 22, while the first frame 19 will drive the inner filter plate 23 to move upward. The pressure plate 2005 and the reverse-moving inner filter plate 23 are used to perform a scrubbing operation, thereby effectively removing oil stains. The sewage in the rotating frame 3 will enter the collection cylinder 5 through the discharge port 17.

[0050] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] 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 tail gas treatment device for a chemical reaction vessel, comprising: The air inlet pipe is detachably mounted on the tail gas pipe of the reactor by bolts. The feature is that it further includes: an inner cylinder (2) is fixedly connected to the inner side of the outer cover (1), a rotating frame (3) is coaxially rotatably embedded inside the inner cylinder (2), and a self-locking switching module is provided on the top of the rotating frame (3). The self-locking switching module is used to change the position of the rotating frame (3). A second frame (21) is fixedly installed in the air vent that is opened through the side wall of the rotating frame (3), and a side filter plate (22) for filtering dust and grease in the exhaust gas is fixedly connected to the inner wall of the second frame (21). A grease removal mechanism (20) is installed on the upper inner side of the second frame (21). The grease removal mechanism (20) is used to squeeze and clean the side filter plate (22).

2. The tail gas treatment device for a chemical reactor according to claim 1, characterized in that: The fixed shaft at the center of the inner cylinder (2) is rotatably connected to the top of the rotating frame (3), and the bottom surface of the fixed shaft is coaxially fixedly connected to the upper end of the exhaust pipe (4). An inner spray frame (13) is fixedly installed inside the fixed shaft of the inner cylinder (2), and the lower part of the inner spray frame (13) is fixedly installed on the exhaust pipe (4). An outer spray frame (16) is fixedly installed on the inner side of the top of the inner cylinder (2). The nozzle of the inner spray frame (13) is directly facing the nozzle on the outer spray frame (16). The inner spray frame (13) and the outer spray frame (16) are used to spray grease cleaning agent onto the side filter plate (22). The nozzle of the inner spray frame (13) is flush with the side wall of the exhaust pipe (4), and the nozzle of the outer spray frame (16) is flush with the inner wall of the inner cylinder (2).

3. The tail gas treatment device for a chemical reactor according to claim 1, characterized in that: The self-locking switching module includes a limiting frame (6) coaxially positioned above the rotating frame (3). The bottom of the limiting frame (6) is fixedly connected to the rotating frame (3), and the limiting frame (6) is rotatably sleeved on the fixed shaft of the inner cylinder (2). The limiting frame (6) has four equally spaced arc grooves. The sidewall of the locking disc (8) is fitted into the arc groove of the limiting frame (6). When the outer wall of the locking disc (8) contacts the limiting frame (6), a position locking structure is formed. A through groove is provided on the side wall of the locking disc (8) for receiving the end of the rotating limiting frame (6). One end of a pull rod (7) is fixedly connected to the center of the bottom surface of the locking disc (8), and the other end of the pull rod (7) is provided with a convex shaft. The convex shaft of the pull rod (7) is slidably inserted into the through groove opened on the limiting frame (6), and the axis of the through groove intersects perpendicularly with the axis of the limiting frame (6). When the locking disc (8) can drive the limiting frame (6) to rotate through the convex shaft at the end of the pull rod (7).

4. The tail gas treatment device for a chemical reactor according to claim 3, characterized in that: The self-locking switching module also includes a drive gear (9) located directly above the locking disk (8). The drive gear (9) is coaxially fixedly connected to the locking disk (8). The drive gear (9) is an incomplete gear, and the drive gear (9) is toothless on the side facing the through groove on the side wall of the locking disk (8). A rotating gear (10) is meshed on the side of the drive gear (9). The bottom connecting shaft of the rotating gear (10) is rotatably mounted on the fixed shaft of the inner cylinder (2). The locking disk (8) drives the rotating gear (10) to rotate using the drive gear (9). An eccentric protrusion is provided on the top of the rotating gear (10).

5. The tail gas treatment device for a chemical reactor according to claim 1, characterized in that: The rotating frame (3) has four vents distributed at equal angles on its side wall. The top of the rotating frame (3) is fitted with a swing cover (14), and the side wall of the swing cover (14) has a guide groove (15). The guide groove (15) has two symmetrically distributed wave grooves, and a protrusion on a force plate (18) is attached to the middle of the wave groove. The force plate (18) is located on the lower outer side of the swing cover (14). The top of the inner wall of the swing cover (14) has a moving groove (11), and a rotating tooth is attached to the moving groove (11). The protruding post on the wheel (10) and the swing cover (14) are rotatably sleeved on the fixed shaft of the inner cylinder (2). The protruding post on the rotating gear (10) can drive the swing cover (14) to rotate back and forth. The force plate (18) is slidably installed through the top of the rotating frame (3), and the bottom of the force plate (18) is fixedly connected to the first frame (19). The first frame (19) is slidably embedded in the inner wall of the rotating frame (3). The inner side of the first frame (19) is fixedly connected to the inner filter plate (23), and the inner filter plate (23) is provided with side filter plates (22) on both sides.

6. The tail gas treatment device for a chemical reactor according to claim 1, characterized in that: The grease removal mechanism (20) includes a swing arm (2001), which is disposed on the side of the second frame (21) away from the first frame (19). One end of the swing arm (2001) is fixedly connected to a force-bearing gear (2002), and the other end of the swing arm (2001) is rotatably connected to a connector (2004). The connector (2004) is slidably embedded in a transverse groove on the side wall of the pressure plate (2005). The swing arm (2001) can be moved through the connector (2002). 04) Drive the pressure plate (2005) to move vertically. The two end faces of the pressure plate (2005) are attached to the inner wall of the second frame (21). The force-bearing gear (2002) is rotatably embedded in the storage groove of the second frame (21). The side of the force-bearing gear (2002) is meshed with a toothed plate (2003). The toothed plate (2003) slides through the top of the second frame (21), and the top of the toothed plate (2003) is fixedly snapped onto the first frame (19).

7. The tail gas treatment device for a chemical reactor according to claim 6, characterized in that: The pressure plate (2005) is attached to the side filter plate (22) on the side away from the connector (2004), and a moving block (2006) is fixedly connected to the end of the pressure plate (2005). The moving block (2006) slides through the second frame (21) and the limiting block (2007). A through groove on the side wall of the limiting block (2007) is used to limit the moving block (2006) in the horizontal direction. A storage box (2008) is fixedly installed through the side wall of the second frame (21). A pressing plate (2009) is slidably inserted into the side wall of the storage box (2008), and the outer wall of the pressing plate (2009) and the inner wall of the storage box (2008) are elastically connected by a spring. The limiting block (2007) is slidably embedded between the inner wall of the second frame (21) and the outer wall of the storage box (2008). The storage box (2008) limits the limiting block (2007) in the vertical direction. The inclined surface on the moving block (2006) is provided above the top inclined surface of the pressing plate (2009).

8. A method for treating the tail gas of a chemical reactor, using the tail gas treatment device for a chemical reactor as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Exhaust gas enters the device through the outer cover (1), and the exhaust gas will pass through the inner cylinder (2) and the rotating frame (3) in sequence. The side filter plate (22) and the inner filter plate (23) on the rotating frame (3) will filter the exhaust gas, and the purified exhaust gas will be discharged through the exhaust pipe (4). S2: The device controls the servo motor (12) to start. The servo motor (12) will drive the self-locking switching module to rotate. At this time, the locking disc (8) in the self-locking switching module will drive the limit frame (6) to rotate at regular intervals through the pull rod (7). The limit frame (6) will drive the rotating frame (3) to adjust synchronously. When the rotating frame (3) is in a stationary state, the drive gear (9) in the self-locking switching module will drive the rotating gear (10) to rotate. The rotating gear (10) will drive the swing cover (14) to swing back and forth. At the same time, the inner spray frame (13) and the outer spray frame (16) will start to spray cleaning agent. S3: The guide groove (15) on the swing cover (14) will drive the force plate (18) and toothed plate (2003) to move back and forth. At this time, the toothed plate (2003) will drive the grease removal mechanism (20) to start running. The pressure plate (2005) in the grease removal mechanism (20) will first squeeze the side filter plate (22) and then move downward, thereby performing a scrubbing operation on the side filter plate (22) and the inner filter plate (23).

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