Zeolite rotary wheel exhaust gas treatment device with simultaneous desorption

Abstract

This invention discloses a zeolite rotor waste gas treatment device with synchronous desorption, belonging to the technical field of waste gas treatment. It includes a frame and adsorption cylinders. A first air inlet is located at the bottom of one side of the frame for introducing cooling air to restore the adsorption capacity of the adsorption cylinders. A second air inlet is located on the side of the frame near the first air inlet for introducing hot air to desorb the adsorption cylinders. A third air inlet is located at the top of one side of the frame for introducing the main flow of waste gas. Air outlets are located on the other side of the frame opposite the first, second, and third air inlets. A rotating ring is rotatably connected inside the frame, and multiple adsorption cylinders are rotatably connected within the rotating ring in a circumferential array. This invention, by setting up multiple rotatable and switchable adsorption cylinders and periodically flipping them during rotation, allows each adsorption cylinder to participate in adsorption work on both sides alternately. Compared with traditional single-sided adsorption structures, this effectively improves the utilization efficiency of zeolite materials and extends their service life.

Description

Technical Field

[0001] This invention relates to the technical field of waste gas treatment, and in particular to a zeolite rotor waste gas treatment device with synchronous desorption. Background Technology

[0002] With the acceleration of industrialization, volatile organic compounds (VOCs) emitted by industries such as spraying, printing, automobile manufacturing, lithium batteries, and semiconductors have become one of the major sources of urban air pollution in my country. VOCs not only directly harm human health, but also participate in photochemical reactions to generate ozone and fine particulate matter (PM2.5), seriously affecting air quality and the ecological environment.

[0003] Zeolite rotor concentrator technology, as a highly efficient and energy-saving waste gas purification device, is widely used in the treatment of low-concentration, high-volume industrial organic waste gas. Utilizing the selective adsorption characteristics of zeolite molecular sieves, it concentrates large quantities of low-concentration VOCs waste gas into small-volume, high-concentration gas, facilitating subsequent efficient incineration using methods such as RTO or RCO, significantly reducing energy consumption and operating costs. It has become a mainstream VOCs treatment solution in the modern environmental protection industry. However, existing zeolite rotor equipment generally suffers from fixed structures and static functional zoning. Most devices use fixed rotors, relying solely on a single-sided surface for adsorption, resulting in low utilization of the adsorption material.

[0004] Therefore, there is an urgent need for a zeolite rotor exhaust gas treatment device with synchronous desorption to improve the utilization efficiency of adsorption materials, realize the coordinated control of the entire process of adsorption-desorption-cooling, and meet the current technical requirements of air pollution prevention and control for efficient, stable, and intelligent environmental protection equipment. Summary of the Invention

[0005] In order to overcome the shortcomings mentioned in the background art, the present invention provides a zeolite rotor exhaust gas treatment device with synchronous desorption.

[0006] A zeolite rotor exhaust gas treatment device with synchronous desorption includes a frame and adsorption cylinders. A first air inlet is opened at the bottom of one side of the frame for introducing cooling air to restore the adsorption capacity of the adsorption cylinders. A second air inlet is opened on the side of the frame near the first air inlet for introducing hot air to desorb the adsorption cylinders. A third air inlet is opened at the top of one side of the frame for introducing the main exhaust gas flow. Air outlets are opened on the other side of the frame opposite the first, second, and third air inlets. A rotating ring is rotatably connected inside the frame, and multiple adsorption cylinders are rotatably connected in a circumferential array within the rotating ring.

[0007] As an improvement to the above solution, the adsorption cylinder has an inner cavity, and a discharge rack is fixedly connected to the adsorption cylinder. The discharge rack has a hollow channel, and the inner cavity of the adsorption cylinder is connected to the hollow channel of the adjacent discharge rack. A circular discharge port is opened in the middle of the rotating ring, and the hollow channel of the discharge rack is connected to the discharge port.

[0008] As an improvement to the above scheme, a rotating shaft is fixedly connected to the side of the adsorption cylinder away from the discharge port, a gear is fixedly connected to the rotating shaft, and an arc-shaped rack is fixedly connected to one side of the rotating ring, which meshes with the rack when the gear rotates.

[0009] As an improvement to the above solution, a drive assembly located outside the frame is also included. The drive assembly is used to drive the rotating ring to rotate and switch the adsorption cylinder on it.

[0010] As an improvement to the above solution, the drive assembly includes a fixed frame, which is fixedly connected to the frame. A motor is fixedly connected to the fixed frame, and a pulley is fixedly connected to the output shaft of the motor. A flat belt connects the pulley and the rotating ring.

[0011] As an improvement to the above scheme, it also includes limiting blocks distributed circumferentially along the discharge port. Each limiting block corresponds to a discharge rack, and each limiting block is fixed to the side of the rotating ring near the corresponding discharge rack. Multiple sets of opening and closing plates distributed circumferentially along the discharge port are rotatably connected to the rotating ring. Each set of opening and closing plates is symmetrically distributed along the adjacent limiting blocks. When the discharge rack rotates to the lower position, the lower opening and closing plate closes. At this time, the bottom of the lower opening and closing plate contacts the adjacent limiting block.

[0012] As an improvement to the above solution, a fan is also included. The fan is fixed to one side of the rack's exhaust port, and a connecting pipe connects the exhaust port away from the fan to the exhaust port directly opposite the first air inlet.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention features multiple rotatable and switchable adsorption cylinders that periodically flip during rotation, allowing each cylinder to alternately participate in adsorption operations on both sides. Compared to traditional single-sided adsorption structures, this effectively improves the utilization efficiency of zeolite materials and extends their service life.

[0015] This invention utilizes the automatic flipping of the adsorption cylinder before rotating to the desorption zone to ensure that the surface of the adsorbed VOCs is facing the hot air inlet, thereby achieving concentrated and efficient desorption of pollutants, avoiding desorption blind zones, and improving regeneration efficiency and system stability.

[0016] This invention achieves a complete closed-loop operation of "cooling → desorption → adsorption" by sequentially setting up a cooling zone, a desorption zone, and an adsorption zone, in conjunction with the step-by-step rotation and flipping action of the adsorption cylinder. This ensures the temperature recovery of the adsorption cylinder and the stability of the adsorption performance, thereby improving the overall processing efficiency.

[0017] This invention utilizes the gravity effect when the adsorption cylinder rotates to the top position, causing the pollutants remaining in the inner cavity after desorption to fall naturally along the hollow discharge rack. They are then transported by a fan and cooling airflow and finally discharged from a designated outlet, eliminating the need for manual cleaning and improving the system's self-cleaning capability.

[0018] This invention incorporates a gravity-driven opening and closing plate structure in the discharge path. The plate automatically opens only when the adsorption cylinder is at the top, allowing material discharge; it automatically closes when rotated to the bottom, effectively preventing residues from falling into the inner cavity of the adsorption cylinder below, thus preventing cross-contamination and ensuring stable purification performance.

[0019] The opening and closing plate of this invention relies on gravity to achieve automatic opening and closing, and with the help of the limit block for limit support, it ensures that the closure is in place and the opening is smooth. It does not require an additional power source or control mechanism, has stable operation, low failure rate, and is suitable for long-term continuous operation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the rotating ring, discharge rack, and adsorption cylinder of the present invention.

[0023] Figure 4 This is a three-dimensional structural diagram of the adsorption cylinder, rotating shaft, gears, and other components of the present invention.

[0024] Figure 5 This is a three-dimensional structural diagram of the components of the present invention, including the mounting bracket, motor, and pulley.

[0025] Figure 6 This is a three-dimensional structural diagram of the motor, pulley, and belt components of the present invention.

[0026] Figure 7 This is a three-dimensional structural diagram of the rotating ring and opening / closing plate components of the present invention.

[0027] Figure 8 This is a three-dimensional structural diagram of the rotating ring, limiting block, and opening / closing plate of the present invention.

[0028] Figure 9 This is a three-dimensional structural diagram of the fan and connecting pipe components of the present invention.

[0029] The labels in the diagram are as follows: 101, frame; 102, first air inlet; 103, second air inlet; 104, third air inlet; 105, rotating ring; 106, discharge rack; 107, discharge port; 108, adsorption cylinder; 109, rotating shaft; 110, gear; 111, rack; 201, fixed frame; 202, motor; 203, pulley; 204, flat belt; 301, limit block; 302, opening and closing plate; 401, fan; 402, air outlet; 403, connecting pipe. Detailed Implementation

[0030] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0031] Example 1: A zeolite rotor exhaust gas treatment device with synchronous desorption, such as Figures 1-4 As shown, the device includes a frame 101 and an adsorption cylinder 108 serving as a zeolite rotor. A first air inlet 102 is located at the bottom front of the frame 101 for introducing cooling air to restore the adsorption capacity of the adsorption cylinder 108. A second air inlet 103 is located at the lower right front of the frame 101 for introducing hot air to desorb the adsorption cylinder 108. A third air inlet 104 is located at the top front of the frame 101 for introducing the main flow of exhaust gas. Figure 9 As shown, the first air inlet 102, the second air inlet 103 and the third air inlet 104 are all located on the rear side of the frame 101 with an air outlet 402. The frame 101 is rotatably connected to a rotating ring 105. Eight adsorption cylinders 108 are rotatably connected to the rotating ring 105 in a circumferential array. Each adsorption cylinder 108 can be rotated forty-five degrees to switch to the next position.

[0032] Specifically, the adsorption cylinder 108 has an inner cavity, and the rotating ring 105 has a circular discharge port 107 in the middle. A discharge rack 106 is fixed to one end of the adsorption cylinder 108 near the discharge port 107. The discharge rack 106 has a hollow channel. The inner cavity of the adsorption cylinder 108 is connected to the hollow channel of the adjacent discharge rack 106. The hollow channel of the discharge rack 106 is connected to the discharge port 107. When the adsorption cylinder 108 rotates to the top, the substance in its inner cavity is discharged downwards to the discharge port 107 under the action of gravity through the hollow channel of the discharge rack 106.

[0033] In addition, a rotating shaft 109 is fixedly connected to the side of the adsorption cylinder 108 away from the discharge port 107, and a gear 110 is fixedly connected to the rotating shaft 109. An arc-shaped rack 111 is fixedly connected to one side of the rotating ring 105. When the gear 110 rotates, it meshes with the rack 111. During this period, the adsorption cylinder 108 rotates with the rotating ring 105 and also rotates on its own axis with the rotating shaft 109.

[0034] In addition, such as Figures 5-6 As shown, it also includes a fixed frame 201, which is fixed to the outside right side of the frame 101. A motor 202 is fixed to the fixed frame 201, and a pulley 203 is fixed to the output shaft of the motor 202. A flat belt 204 is connected between the pulley 203 and the rotating ring 105.

[0035] The main flow of exhaust gas passes through the third air inlet 104. The adsorption cylinder 108 located at the third air inlet 104 uses the huge specific surface area and selective adsorption characteristics of zeolite molecular sieve (porous crystal material) to adsorb VOCs and other substances in the exhaust gas onto its surface. The treated air meets the emission standards. After a period of time, the motor 202 is started. The output shaft of the motor 202 drives the flat belt 204 through the pulley 203 on it. The flat belt 204 then drives the rotating ring 105 to rotate, thereby causing all the adsorption cylinders 108 to slowly rotate 45 degrees clockwise. This causes the adsorption cylinders 108 that have been adsorbed to move away from the third air inlet 104, and the next new adsorption cylinder 108 rotates to the third air inlet 104. Then the machine stops adsorbing again. This process is repeated to achieve the rotation switching of the adsorption cylinders 108.

[0036] During the aforementioned multiple rotational switching processes, the adsorption cylinder 108 drives the gear 110 to rotate via its rotating shaft 109. When the gear 110 passes the rack 111, it rotates 180 degrees, which in turn drives the adsorption cylinder 108, which has already been adsorbed, to rotate 180 degrees, thus flipping it over. When the adsorption cylinder 108, after being flipped over, carries VOCs and other substances into the second air inlet 103 of the "desorption zone," a small volume of hot air passes through the second air inlet 103 to desorb the VOCs and other substances on the adsorption cylinder 108. The desorbed high-concentration gas then enters the incineration system for incineration. When the desorbed adsorption cylinder 108 continues to rotate clockwise by 45 degrees to the first air inlet 102, cooling air passes through the first air inlet 102 to restore the temperature of the desorbed adsorption cylinder 108 and ensure adsorption efficiency.

[0037] In summary, by setting up multiple rotatable and switchable adsorption cylinders 108 and periodically flipping them during rotation, the present invention enables each adsorption cylinder 108 to participate in the adsorption operation on both sides alternately. Compared with the traditional single-sided adsorption structure, this invention effectively improves the utilization efficiency of zeolite materials and extends their service life.

[0038] This invention utilizes the adsorption cylinder 108 to automatically flip over before rotating to the desorption zone, ensuring that the surface of the adsorbed VOCs is facing the hot air inlet, thereby achieving concentrated and efficient desorption of pollutants, avoiding desorption blind zones, and improving regeneration efficiency and system stability.

[0039] This invention achieves a complete closed-loop operation of "cooling → desorption → adsorption" by sequentially setting up a cooling zone, a desorption zone, and an adsorption zone, in conjunction with the step-by-step rotation and flipping action of the adsorption cylinder 108. This ensures the temperature recovery and adsorption performance stability of the adsorption cylinder 108, thereby improving the overall processing efficiency.

[0040] Example 2: Based on Example 1, specifically, as follows... Figures 7-8 As shown, it also includes limiting blocks 301 distributed circumferentially along the discharge port 107. Each limiting block 301 corresponds to a discharge rack 106. Each limiting block 301 is fixed to the side of the rotating ring 105 near the corresponding discharge rack 106. Eight sets of opening and closing plates 302 distributed circumferentially along the discharge port 107 are rotatably connected to the rotating ring 105. Each set of opening and closing plates 302 is symmetrically distributed along the adjacent limiting blocks 301. When the discharge rack 106 rotates to the lower position, the opening and closing plates 302 rotated to the lower position close. At this time, the bottom of the lower opening and closing plate 302 contacts the adjacent limiting block 301.

[0041] In addition, such as Figure 9 As shown, it also includes a fan 401, which is fixed to the front side of the exhaust port 107 inside the frame 101. A connecting pipe 403 connects the rear side of the exhaust port 107 to the exhaust port 402 opposite to the first air inlet 102.

[0042] During desorption, some VOCs and other substances remain in the inner cavity of the adsorption cylinder 108. As it rotates, when it rotates to the third air inlet 104 again, since the third air inlet 104 is at the highest point, the substances in the inner cavity of the top adsorption cylinder 108 are discharged downwards through the hollow channel of the discharge rack 106 to the discharge port 107 under the action of gravity. The fan 401 blows the substances that fall to the discharge port 107 backwards into the connecting pipe 403, and then falls down along the connecting pipe 403 to the air outlet 402 directly opposite the first air inlet 102. At this time, the cooling air blown backwards through the first air inlet 102 blows the substances backwards, achieving the effect of automatically cleaning the residual VOCs and other substances.

[0043] In summary, this invention utilizes the gravity effect when the adsorption cylinder 108 rotates to the top high position, causing the pollutants remaining in the inner cavity after desorption to fall naturally along the hollow discharge rack 106, and are then transported by the fan 401 and the cooling airflow, and finally discharged from the designated outlet, eliminating the need for manual cleaning and improving the system's self-cleaning capability.

[0044] To prevent the material in the inner cavity of the top adsorption cylinder 108 from falling into the inner cavity of the lower adsorption cylinder 108, it is necessary to control the discharge rack 106 to be blocked when rotating downwards and to be opened again when rotating upwards. The specific operation is as follows: When the rotating ring 105 rotates clockwise, it drives the limiting block 301 and the opening and closing plate 302 on it to rotate synchronously. When the limiting block 301 and the opening and closing plate 302 rotate downwards, the opening and closing plate 302 automatically rotates and closes under the action of gravity. The limiting block 301 supports the bottom of the opening and closing plate 302 to prevent the opening and closing plate 302 from over-rotating and failing to close when closing. When the limiting block 301 and the opening and closing plate 302 rotate upwards, the opening and closing plate 302 automatically rotates and opens under the action of gravity, without affecting the falling out of the material.

[0045] In summary, the present invention, by setting a gravity-driven opening and closing plate 302 structure in the discharge path, automatically opens only when the adsorption cylinder 108 is above, allowing material discharge; and automatically closes when rotated to the bottom, effectively preventing the residue above from falling into the inner cavity of the adsorption cylinder 108 running below, preventing cross-contamination, and ensuring stable purification effect.

[0046] Furthermore, the opening and closing plate 302 relies on gravity to achieve automatic opening and closing, and with the limit block 301 for limit support, it ensures that the closing is in place and the opening is smooth. No additional power source or control mechanism is required, the operation is stable, the failure rate is low, and it is suitable for long-term continuous operation conditions.

[0047] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. A zeolite wheel exhaust gas treatment device with simultaneous desorption, comprising a frame (101) and an adsorption cylinder (108), characterized in that, A first air inlet (102) for introducing cooling air to restore the adsorption capacity of the adsorption cylinder (108) is opened on the bottom side of one side of the frame (101). A second air inlet (103) for introducing hot air to desorb the adsorption cylinder (108) is opened on the side of the frame (101) near the first air inlet (102). A third air inlet (104) for introducing the main flow of exhaust gas is opened on the top side of one side of the frame (101). An air outlet (402) is opened on the other side of the frame (101) opposite the first air inlet (102), the second air inlet (103), and the third air inlet (104). A rotating ring (105) is rotatably connected inside the frame (101). Multiple adsorption cylinders (108) 8) The adsorption cylinder (108) is rotatably connected to the rotating ring (105) in a circumferential array; a rotating shaft (109) is fixed to the side of the adsorption cylinder (108) away from the discharge port (107), and a gear (110) is fixed to the rotating shaft (109). An arc-shaped rack (111) is fixed to one side of the rotating ring (105). When the gear (110) rotates, it meshes with the rack (111). The adsorption cylinder (108) drives the gear (110) to rotate through the rotating shaft (109). When the gear (110) passes the rack (111), the gear (110) rotates 180 degrees, and through the rotating shaft (109), it drives the adsorption cylinder (108) that has been adsorbed to rotate 180 degrees to achieve flipping.

2. The zeolite rotor exhaust gas treatment device with synchronous desorption as described in claim 1, characterized in that, The adsorption cylinder (108) has an inner cavity, and the adsorption cylinder (108) is fixedly connected to the discharge rack (106). The discharge rack (106) has a hollow channel. The inner cavity of the adsorption cylinder (108) is connected to the hollow channel of the adjacent discharge rack (106). The rotating ring (105) has a circular discharge port (107) in the middle, and the hollow channel of the discharge rack (106) is connected to the discharge port (107).

3. The zeolite rotor exhaust gas treatment device with synchronous desorption as described in claim 2, characterized in that, It also includes a drive assembly located outside the frame (101), which drives the rotating ring (105) to rotate and switch the adsorption cylinder (108) on it.

4. The zeolite rotor exhaust gas treatment device with synchronous desorption as described in claim 3, characterized in that, The drive assembly includes a fixed frame (201), which is fixedly connected to the frame (101). A motor (202) is fixedly connected to the fixed frame (201), and a pulley (203) is fixedly connected to the output shaft of the motor (202). A flat belt (204) is connected between the pulley (203) and the rotating ring (105).

5. The zeolite rotor exhaust gas treatment device with synchronous desorption as described in claim 4, characterized in that, It also includes limiting blocks (301) distributed circumferentially along the discharge port (107). Each limiting block (301) corresponds to a discharge rack (106). Each limiting block (301) is fixed to the side of the rotating ring (105) near the corresponding discharge rack (106). Multiple sets of opening and closing plates (302) distributed circumferentially along the discharge port (107) are rotatably connected to the rotating ring (105). Each set of opening and closing plates (302) is symmetrically distributed along the adjacent limiting blocks (301). When the discharge rack (106) rotates to the lower position, the lower opening and closing plate (302) closes. At this time, the bottom of the lower opening and closing plate (302) contacts the adjacent limiting block (301).

6. The zeolite rotor exhaust gas treatment device with synchronous desorption as described in claim 5, characterized in that, It also includes a fan (401), which is fixed to the side of the frame (101) near the exhaust port (107). The side of the exhaust port (107) away from the fan (401) is connected to the exhaust port (402) opposite the first air inlet (102) by a connecting pipe (403).

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