An exhaust gas filtration system

Abstract

The present application relates to the technical field of waste gas filtration, in particular to a waste gas filtration system, which comprises a dry filter main body, a zeolite runner main body and an exhaust cylinder main body, the air inlet end of the dry filter main body is connected with a first three-way valve, the air inlet end of the zeolite runner main body is connected with a second three-way valve, and one of the symmetrical joints of the second three-way valve is connected with the air outlet end of the dry filter main body; the flow direction of the waste gas treatment channel can be changed by rotating the first three-way valve and the third three-way valve, so that the emergency activated carbon adsorber temporarily replaces the dry filter main body, the zeolite runner main body and the three-bed RCO main body to filter the waste gas, and the dry filter main body and the zeolite runner main body are maintained in the process, so as to prevent the device from being stopped due to maintenance, ensure the continuous and stable operation of the waste gas treatment, and ensure the treatment efficiency of the system.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas filtration technology, specifically an exhaust gas filtration system. Background Technology

[0002] Exhaust gas filtration is an important means of reducing pollutant emissions and protecting the environment. It mainly removes particulate matter, harmful gases or volatile organic compounds from exhaust gas through physical, chemical or biological methods. Physical filtration removes particulate matter from exhaust gas through the interception effect of filter media and is suitable for the treatment of mechanical pollutants such as dust and smoke. Zeolite rotor is an exhaust gas purification device used in physical exhaust gas purification systems.

[0003] In the filtration system, when exhaust gas passes through the exhaust gas rotor, the target components are adsorbed by zeolite, and the purified gas meets emission standards. After adsorption saturation, the rotor enters the regeneration zone, where hot air or nitrogen is used to heat and desorb the target components, forming high-concentration exhaust gas, which is convenient for subsequent incineration or recycling. The cooling zone of the rotor is cooled by ambient temperature gas to restore adsorption capacity and ensure continuous and stable operation.

[0004] In existing technologies, exhaust gas treatment systems only have a single treatment channel, and the zeolite rotor requires regular maintenance, such as once a year. When maintenance is performed, the entire exhaust gas treatment system is shut down, affecting production efficiency. Therefore, an exhaust gas filtration system is proposed to address the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies and solve the problems of waste gas treatment systems having only a single treatment channel, requiring regular maintenance of the zeolite rotor (e.g., once a year), and the entire waste gas treatment system being shut down during maintenance, thus affecting production efficiency, a waste gas filtration system is proposed.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The exhaust gas filtration system of the present invention includes a dry filter body, a zeolite rotor body and an exhaust stack body. The air inlet end of the dry filter body is connected to a first three-way valve, the air inlet end of the zeolite rotor body is connected to a second three-way valve, one of the symmetrical joints of the second three-way valve is connected to the air outlet end of the dry filter body, and the air outlet end of the zeolite rotor body is connected to a third three-way valve. The symmetrical joint end of the third three-way valve is connected to the air inlet end of the exhaust stack body.

[0007] An emergency activated carbon adsorber is installed outside the zeolite rotor body. The air inlet of the emergency activated carbon adsorber is connected to two sections of air inlet pipe through a three-way pipe. The air inlet ends of the two sections of air inlet pipe are respectively connected to the third connector of the first three-way valve and the second three-way valve. The air outlet of the emergency activated carbon adsorber is connected to the third connector of the third three-way valve.

[0008] Preferably, the first three-way valve, the second three-way valve, and the third three-way valve all include a valve body, a valve core, and a rotating handle. The rotating handle's shaft extends into the valve body and is fixedly connected to the valve core. The inner three-way valve of the valve core can be rotated to correspond to the outer three-way valve of the valve body.

[0009] Preferably, the zeolite rotor body includes a rotor frame and frame covers symmetrically installed on both sides thereon. A desorption rotor is installed inside the rotor frame. An installation shaft is fitted between the center of the side wall of the desorption rotor and the through holes on both sides of the rotor frame. The frame covers on both sides are respectively connected to the air outlet of the second three-way valve and the air inlet of the third three-way valve.

[0010] Preferably, an electric heater is mounted on the top of one of the frame covers, and the heating element to which the electric heater belongs extends into the interior of one of the frame covers.

[0011] Preferably, a three-bed RCO body is mounted on the outside of the main body of the rotor via a bracket. The air inlet pipe of the three-bed RCO body is connected to another frame cover, and the air outlet pipe of the three-bed RCO body is connected to the air inlet of the exhaust pipe body.

[0012] Preferably, a motor is mounted on the underside of the wheel frame via a bracket, a transmission roller is fixedly connected to the output end of the motor, and a transmission belt is installed between the transmission roller and the outer annular groove of the desorption wheel.

[0013] Preferably, both sides of the wheel frame are slidably fitted with baffles on their outer rails. One end of the baffle's horizontal plate sidewall can contact the sidewall of the mounting shaft. A U-shaped handle is installed through the through hole of the baffle's sidewall bracket. The outer walls of both ends of the U-shaped handle can pass through the baffle and engage with the straight groove opening of the sidewall of the wheel frame's horizontal beam. Springs are fitted at both ends of the U-shaped handle, and the springs are located between the circular plate at one end of the U-shaped handle and the inner wall of the baffle's sidewall bracket.

[0014] Preferably, a first fan is installed between the connecting pipe of the third three-way valve and the exhaust stack body, and a second fan is installed between the connecting pipe of the third three-way valve and the emergency activated carbon adsorber.

[0015] The beneficial effects of this invention are:

[0016] I. In this invention, the inlet and outlet of the emergency activated carbon adsorber are connected to the first three-way valve and the third three-way valve, respectively. This allows the flow direction of the waste gas treatment channel to be changed by rotating the first and third three-way valves when maintenance of the dry filter body and the zeolite rotor body is required. This enables the emergency activated carbon adsorber to temporarily replace the dry filter body, the zeolite rotor body, and the three-bed RCO body in the filtration process of the waste gas. During this process, maintenance of the dry filter body and the zeolite rotor body is performed, preventing the waste gas treatment system from shutting down due to maintenance. This ensures the continuous and stable operation of the waste gas treatment system and guarantees the system's waste gas treatment efficiency.

[0017] Second, in this invention, the air inlet pipe assembled by the three-way pipe can be connected to the first three-way valve and the second three-way valve respectively. This allows the flow direction of the exhaust gas treatment channel to be changed by rotating the second three-way valve when the dry filter body is in good condition. This allows the emergency activated carbon adsorber to pass through the physical filtration of the exhaust gas before treating it. This process can reduce the workload of the emergency activated carbon adsorber through the dry filter body, thereby increasing the optimal operating time of the emergency activated carbon adsorber to a certain extent. This prevents the exhaust gas treatment quality from being reduced due to the long-term operation of the emergency activated carbon adsorber. During the deep maintenance and repair of the zeolite rotor body, the system's exhaust gas treatment effect is guaranteed. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a perspective view of the cooperation between the first three-way valve, the second three-way valve, the third three-way valve, and the emergency activated carbon adsorber in this invention;

[0021] Figure 3 This is a perspective view showing the separation of the zeolite rotor body and the three-bed RCO body in this invention;

[0022] Figure 4 These are three-dimensional views and schematic diagrams of the first three-way valve, the second three-way valve, and the third three-way valve in this invention, showing their different states.

[0023] Figure 5 This is a perspective view of the disassembled wheel frame and frame cover in this invention;

[0024] Figure 6 This is a perspective view of the wheel frame in this invention;

[0025] Figure 7 This is a perspective view of the disassembled cover and U-shaped handle in this invention;

[0026] Legend:

[0027] 1. Dry filter body; 2. Zeolite impeller body; 3. Exhaust stack body; 4. First three-way valve; 5. Second three-way valve; 6. Third three-way valve; 7. Emergency activated carbon adsorber; 8. Inlet pipe body; 9. Valve body; 10. Valve core; 11. Rotary handle; 12. Impeller frame; 13. Frame cover; 14. Desorption impeller; 15. Mounting shaft; 16. Electric heater; 17. Three-bed RCO body; 18. Motor; 19. Drive roller; 20. Drive belt; 21. Baffle; 22. U-shaped handle; 23. Spring; 24. First fan; 25. Second fan. Detailed Implementation

[0028] 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.

[0029] Specific implementation examples are given below.

[0030] Please see Figure 1 - Figure 7This invention provides an exhaust gas filtration system, comprising a dry filter body 1, a zeolite rotor body 2, and an exhaust stack body 3. The inlet end of the dry filter body 1 is connected to a first three-way valve 4, the inlet end of the zeolite rotor body 2 is connected to a second three-way valve 5, one symmetrical connector of the second three-way valve 5 is connected to the outlet end of the dry filter body 1, and the outlet end of the zeolite rotor body 2 is connected to a third three-way valve 6, the symmetrical connector end of the third three-way valve 6 being connected to the inlet end of the exhaust stack body 3. The dry filter body 1, zeolite rotor body 2, and exhaust stack body 3 are connected to a zeolite rotor body 2 with an emergency activated carbon adsorber 7 installed outside. The air inlet of the emergency activated carbon adsorber 7 is connected to two air inlet pipes 8 through a three-way pipe. The air inlet ends of the two air inlet pipes 8 are respectively connected to the third connectors of the first three-way valve 4 and the second three-way valve 5. The air outlet of the emergency activated carbon adsorber 7 is connected to the third connector of the third three-way valve 6. The dry filter body 1, zeolite rotor body 2, and exhaust stack body 3 are combined with the pipeline to filter the exhaust gas. In a single-channel system, exhaust gas first enters the dry filter body 1 through the inlet end. After preliminary filtration, it enters the zeolite rotor body 2 through the outlet end of the dry filter body 1. The exhaust gas undergoes secondary filtration by the components of the zeolite rotor body 2 and is then discharged through the exhaust stack body 3 before being discharged from the system. The exhaust stack body 3, the first three-way valve 4, and the second three-way valve 5 are the main auxiliary components that increase the exhaust gas treatment channel of the device. The inlet end of the emergency activated carbon adsorber 7 can be connected to the first three-way valve 4 and the second three-way valve 5 with the cooperation of the inlet pipe body 8. This allows the gas entering the emergency activated carbon adsorber 7 to be adjusted between untreated and treated gas. The outlet end of the emergency activated carbon adsorber 7 is connected to the third three-way valve 6 connected to the inlet end of the exhaust stack body 3. This allows the exhaust gas treated by the emergency activated carbon adsorber 7 to be directly discharged from the system through the exhaust stack body 3.

[0031] like Figure 1 , Figure 2 and Figure 4As shown, the first three-way valve 4, the second three-way valve 5, and the third three-way valve 6 all include a valve body 9, a valve core 10, and a rotating handle 11. The rotating shaft of the rotating handle 11 passes through the valve body 9 and is fixedly connected to the valve core 10. The inner three-way valve of the valve core 10 can be rotated to correspond to the outer three-way valve of the valve body 9. The three-way valves of the first three-way valve 4, the second three-way valve 5, and the third three-way valve 6 are the same components, and the state of the valve core 10 inside the valve body 9 can be adjusted by rotating the handle 11. When the first three-way valve 4, the second three-way valve 5, and the third three-way valve 6 are all in state A... The exhaust gas is treated by the dry filter body 1 and the zeolite rotor body 2 and then discharged through the exhaust stack body 3. When the first three-way valve 4 and the third three-way valve 6 are in state B, the exhaust gas is treated by the emergency activated carbon adsorber 7 and then discharged through the exhaust stack body 3. When the first three-way valve 4 is in state A and the second three-way valve 5 and the third three-way valve 6 are in state B, the exhaust gas is treated by the dry filter body 1 and the emergency activated carbon adsorber 7 and then discharged through the exhaust stack body 3. In addition, check valves are installed in the three-way pipes of the inlet pipe body 8 to prevent the exhaust gas from flowing back.

[0032] like Figure 3 , Figure 5 and Figure 6As shown, the zeolite rotor body 2 includes a rotor frame 12 and frame covers 13 symmetrically installed on both sides. A desorption rotor 14 is installed inside the rotor frame 12. A mounting shaft 15 is fitted between the center of the side wall of the desorption rotor 14 and the through holes on both sides of the rotor frame 12. The two frame covers 13 are respectively connected to the outlet of the second three-way valve 5 and the inlet of the third three-way valve 6. An electric heater 16 is installed on the top of one of the frame covers 13. The electric heater 16 is used for heating... The component extends into the interior of one of the frame covers 13. A three-bed RCO body 17 is mounted on the outside of the main body of the rotary wheel via a bracket. The air inlet pipe of the three-bed RCO body 17 is connected to another frame cover 13, and the air outlet pipe of the three-bed RCO body 17 is connected to the air inlet of the exhaust pipe body 3. A motor 18 is mounted on the lower part of the rotary wheel frame 12 via a bracket. A transmission roller 19 is fixedly connected to the output end of the motor 18. The transmission roller 19 and the outer annular groove of the desorption rotary wheel 14 are connected to each other. Equipped with a drive belt 20, the two side frame covers 13 of the zeolite rotor body 2 are connected to the second three-way valve 5 and the third three-way valve 6, respectively. When the zeolite rotor body 2 is running, the exhaust gas enters through the frame cover 13 connected to the second three-way valve 5, and after being desorbed and filtered by the desorption zone of the desorption rotor 14, the purified gas is discharged through the other frame cover 13. The desorption rotor 14 can rotate with the cooperation of the mounting shaft 15 and the rotor frame 12. The drive belt 20 installed between the drive roller 19 and the desorption rotor 14 can make the drive roller 19 and the desorption rotor 14 rotate synchronously. The motor 18 provides output force for this rotation. During the desorption process of the desorption rotor 14, the desorption zone, which is heated by the electric heater 16, can be adsorbed by the three-bed RCO body 17 after entering the range of the other frame cover 13, realizing desorption cycle and ensuring the desorption effect of the desorption rotor 14 on the exhaust gas.

[0033] like Figure 5 and Figure 7As shown, both sides of the wheel frame 12 have slidably mounted baffles 21 on their outer rails. One end of the baffle 21's horizontal plate sidewall can contact the sidewall of the mounting shaft 15. A U-shaped handle 22 is installed through the through hole in the sidewall bracket of the baffle 21. The outer walls of both ends of the U-shaped handle 22 can engage with the straight groove opening of the sidewall of the wheel frame 12's horizontal beam through the baffle 21. Springs 23 are fitted at both ends of the U-shaped handle 22. The springs 23 are located between the circular plate at one end of the U-shaped handle 22 and the inner wall of the sidewall bracket of the baffle 21, allowing for movement. The cover 21 outside the crossbeam track of the wheel frame 12 can block both ends of the mounting shaft 15, increasing the structural stability of the desorption wheel 14 during rotation. When the desorption wheel 14 needs to be disassembled and maintained, the U-shaped handle 22 needs to be pulled to overcome the elastic force of the spring 23, so that the U-shaped handle 22 is disengaged from the straight groove on the side wall of the crossbeam of the wheel frame 12, and then the cover 21 is pulled out so that it does not block the mounting shaft 15. At this time, the mounting shaft 15 and the desorption wheel 14 can be removed.

[0034] like Figure 2 As shown, a first fan 24 is installed between the connecting pipe of the third three-way valve 6 and the exhaust stack body 3, and a second fan 25 is installed between the connecting pipe of the third three-way valve 6 and the emergency activated carbon adsorber 7. When the exhaust gas is filtered by the dry filter body 1 and the zeolite rotor body 2 and then discharged from the exhaust stack body 3, the first fan 24 enhances the airflow in this process. When the exhaust gas is filtered by the three-bed RCO body 17 or the separate emergency activated carbon adsorber 7 and then discharged from the exhaust stack body 3, the second fan 25 enhances the airflow in this process.

[0035] Working Principle: The dry filter body 1, zeolite rotor body 2, and exhaust stack body 3, in conjunction with the pipeline, form a single channel for filtering exhaust gas. Exhaust gas first enters the dry filter body 1 through its inlet end. After preliminary filtration, it enters the zeolite rotor body 2 through its outlet end. The zeolite rotor body 2 then performs secondary filtration on the pre-filtered exhaust gas, which is then discharged through the exhaust stack body 3 and removed from the system. The exhaust stack body 3, the first three-way valve 4, and the second three-way valve 5 are the main auxiliary components that increase the exhaust gas treatment channel of the device. The inlet end of the emergency activated carbon adsorber 7, in conjunction with the inlet pipe body 8, can connect with the first three-way valve 4 and the second three-way valve respectively. 5. When connected, the gas entering the emergency activated carbon adsorber 7 can be adjusted between untreated and treated states. The outlet of the emergency activated carbon adsorber 7 is connected to the inlet of the exhaust stack 3 via the third three-way valve 6. This allows the exhaust gas treated by the emergency activated carbon adsorber 7 to be directly discharged from the system through the exhaust stack 3. The three-way valves 4, 5, and 6 are identical components and can be adjusted by rotating the handle 11 to regulate the state of the valve core 10 inside the valve body 9. When all three valves are in state A, the exhaust gas is discharged from the exhaust stack 3 after being treated by the dry filter body 1 and the zeolite rotor body 2. When the first three-way valve 4 and the third three-way valve 6 are in state A, the exhaust gas is discharged from the exhaust stack 3 after being treated by the dry filter body 1 and the zeolite rotor body 2. When valve 6 is in state B, the exhaust gas is treated by the first emergency activated carbon adsorber 7 and then discharged through the exhaust stack body 3. When the first three-way valve 4 is in state A, and the second three-way valve 5 and the third three-way valve 6 are in state B, the exhaust gas is treated by the dry filter body 1 and the emergency activated carbon adsorber 7 and then discharged through the exhaust stack body 3. Check valves are installed in the three-way pipes of the inlet pipe 8 to prevent backflow of exhaust gas. The two side frame covers 13 of the zeolite rotor body 2 are connected to the second three-way valve 5 and the third three-way valve 6, respectively. When the zeolite rotor body 2 is running, the exhaust gas enters through the frame cover 13 connected to the second three-way valve 5, is desorbed and filtered in the desorption zone of the desorption rotor 14, and is then discharged through the other frame cover 13. The desorption wheel 14 can rotate when mounted on the rotating shaft 15 and the wheel frame 12. The transmission belt 20 installed between the transmission roller 19 and the desorption wheel 14 enables the transmission roller 19 and the desorption wheel 14 to rotate synchronously. The motor 18 provides output force for this rotation. During the desorption process of the desorption wheel 14, the desorption zone, heated by the electric heater 16, can be adsorbed by the three-bed RCO body 17 after entering the range of another frame cover 13, realizing desorption cycle and ensuring the desorption effect of the desorption wheel 14 on the waste gas. The baffle 21, which is movable outside the crossbeam track of the wheel frame 12, can block both ends of the rotating shaft 15, increasing the structural stability of the desorption wheel 14 during rotation.When disassembling and maintaining the desorption rotor 14 is required, the U-shaped handle 22 needs to be pulled to overcome the elastic force of the spring 23, so that the U-shaped handle 22 is disengaged from the straight groove on the side wall of the crossbeam to which the rotor frame 12 belongs. Then, the cover 21 is pulled out so that it does not obstruct the mounting shaft 15. At this time, the mounting shaft 15 and the desorption rotor 14 can be removed. When the exhaust gas is filtered by the dry filter body 1 and the zeolite rotor body 2 and discharged from the exhaust stack body 3, the first fan 24 enhances the airflow in this process. When the exhaust gas is filtered by the three-bed RCO body 17 or the separate emergency activated carbon adsorber 7 and discharged from the exhaust stack body 3, the second fan 25 enhances the airflow in this process.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An exhaust gas filtration system, comprising a dry filter body (1), a zeolite rotor body (2), and an exhaust stack body (3), characterized in that: The air inlet of the dry filter body (1) is connected to a first three-way valve (4), the air inlet of the zeolite rotor body (2) is connected to a second three-way valve (5), one of the symmetrical joints of the second three-way valve (5) is connected to the air outlet of the dry filter body (1), the air outlet of the zeolite rotor body (2) is connected to a third three-way valve (6), and the symmetrical joint of the third three-way valve (6) is connected to the air inlet of the exhaust stack body (3). An emergency activated carbon adsorber (7) is provided outside the zeolite rotor body (2). The air inlet of the emergency activated carbon adsorber (7) is connected to two sections of air inlet pipe (8) through a three-way pipe. The air inlet ends of the two sections of air inlet pipe (8) are respectively connected to the third connector of the first three-way valve (4) and the second three-way valve (5). The air outlet of the emergency activated carbon adsorber (7) is connected to the third connector of the third three-way valve (6).

2. The exhaust gas filtration system according to claim 1, characterized in that: The first three-way valve (4), the second three-way valve (5) and the third three-way valve (6) each include a valve body (9), a valve core (10) and a rotating handle (11). The rotating shaft of the rotating handle (11) passes through the valve body (9) and is fixedly connected to the valve core (10). The inner three-way of the valve core (10) can be rotated to correspond to the outer three-way of the valve body (9).

3. The exhaust gas filtration system according to claim 2, characterized in that: The zeolite rotor body (2) includes a rotor frame (12) and frame covers (13) symmetrically installed on both sides. A desorption rotor (14) is installed inside the rotor frame (12). A mounting shaft (15) is fitted between the center of the side wall of the desorption rotor (14) and the through holes on both sides of the rotor frame (12). The frame covers (13) on both sides are connected to the outlet end of the second three-way valve (5) and the inlet end of the third three-way valve (6), respectively.

4. The exhaust gas filtration system according to claim 3, characterized in that: An electric heater (16) is mounted on the top of one of the frame covers (13), and the heating element of the electric heater (16) extends into the interior of one of the frame covers (13).

5. The exhaust gas filtration system according to claim 4, characterized in that: The outside of the main body of the rotary wheel is equipped with a three-bed RCO body (17) by a bracket. The air inlet pipe of the three-bed RCO body (17) is connected to another frame cover (13), and the air outlet pipe of the three-bed RCO body (17) is connected to the air inlet of the exhaust pipe body (3).

6. The exhaust gas filtration system according to claim 5, characterized in that: A motor (18) is mounted on the underside of the wheel frame (12) via a bracket. A transmission roller (19) is fixed to the output end of the motor (18). A transmission belt (20) is installed between the transmission roller (19) and the outer annular groove of the desorption wheel (14).

7. The exhaust gas filtration system according to claim 6, characterized in that: Both sides of the wheel frame (12) are slidably mounted with baffles (21) on the outer rails of the crossbeams. The side wall of one end of the baffle (21) can contact the side wall of the mounting shaft (15). A U-shaped handle (22) is installed through the through hole of the side wall bracket of the baffle (21). The outer walls of both ends of the U-shaped handle (22) can pass through the baffle (21) and the straight groove opening of the side wall of the crossbeam of the wheel frame (12) and engage with each other. Both ends of the U-shaped handle (22) are fitted with springs (23). The springs (23) are located between the circular plate at one end of the U-shaped handle (22) and the inner wall of the side wall bracket of the baffle (21).

8. The exhaust gas filtration system according to claim 1, characterized in that: A first fan (24) is installed between the third three-way valve (6) and the connecting pipe of the exhaust stack body (3), and a second fan (25) is installed between the third three-way valve (6) and the connecting pipe of the emergency activated carbon adsorber (7).

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