Chemical production organic waste gas recovery treatment device

Abstract

The application discloses a chemical production organic waste gas recovery treatment device, which comprises a tank body and a communication mechanism, the tank body has an upward opening; the communication mechanism is arranged on one side of the tank body, and one end of the communication mechanism is communicated with the tank body; a connecting part is arranged at the bottom corner of the communication mechanism, and the connecting part is provided with an air inlet pipe connected with the communication mechanism. When the device is used, the liquid required for filtering the organic waste gas is added into the tank body; when the tank body is filled with the liquid, the liquid in the communication mechanism is in the same level with the liquid in the tank body because the communication mechanism is communicated with the bottom of the tank body; at this time, the continuous air inlet through the air inlet pipe, the continuous floating of the gas and the pressure of the liquid at the bottom of the tank body can push the liquid in the communication mechanism to move upward; the liquid and the gas are continuously lifted by the first connecting pipe.

Description

Technical Field

[0001] This invention relates to the field of waste gas recycling, and in particular to a device for recovering and treating organic waste gas from chemical production. Background Technology

[0002] In chemical production, the main organic waste gas components that can react with water include esters, halogenated hydrocarbons, olefins, and organometallic compounds. The filtration method must be selected based on the waste gas composition, concentration, and treatment requirements. Commonly used methods include spray absorption, bio-trickling filtration, chemical absorption, condensation, and membrane separation.

[0003] In practice, the above methods for treating and filtering waste gas from chemical production cannot be used continuously. Moreover, during the filtration process, only one type of organic matter can be filtered, and only one element in the organic waste gas can be filtered. If other components or impurities in the organic waste gas need to be filtered, they need to be filtered by another device. At the same time, the impurities deposited at the bottom of the tank after filtration are not easy to clean, and the cleaning operation is cumbersome and difficult to achieve.

[0004] For example, patent application number CN201810595501.7 discloses a waste gas treatment device for chemical production, including a box, activated carbon filter, spray box, spray pump, first ventilation pipe, spray plate, spray hole, air inlet pipe, air inlet fan, biodecomposition box, spray pump, second ventilation pipe, grid, active biological filler, spray pipe, spray head, aeration plate, plasma generator, positive electrode frame, negative electrode frame, multiple sets of positive electrode plates and multiple sets of negative electrode plates. The multiple sets of positive electrode plates are electrically connected to the positive electrode of the plasma generator, and the multiple sets of negative electrode plates are electrically connected to the negative electrode of the plasma generator. An exhaust pipe is provided at the top of the box, and an exhaust fan is provided at the exhaust pipe.

[0005] When the above-mentioned device is in use, its filter screen will absorb a large amount of dust, causing the filter screen pores to become clogged. In addition, when the spray pipe of the above-mentioned device sprays liquid downwards, the liquid after reaction will accumulate at the bottom. Some gases in the exhaust gas that are insoluble in the liquid may generate a large number of bubbles on the liquid surface. As the number of bubbles increases, the bubbles will become thicker and thicker, which will compress the space between the liquid and gas sprayed in the spray tower, resulting in a decrease in exhaust gas treatment efficiency. Therefore, it is necessary to stop the operation of the device for maintenance, making it difficult for the exhaust gas treatment device to operate continuously for a long time, thereby reducing the working efficiency of exhaust gas treatment. Summary of the Invention

[0006] One object of the present invention is to provide a chemical production organic waste gas recovery and treatment device that at least solves any of the above-mentioned technical problems.

[0007] A further objective of this invention is to avoid the problem of low efficiency caused by the difficulty of continuous operation of existing chemical production waste gas treatment devices for extended periods.

[0008] Another further objective of this invention is to improve work efficiency.

[0009] In particular, the present invention provides a chemical production organic waste gas recovery and treatment device, comprising a tank having an upward opening;

[0010] A connecting mechanism is provided on one side of the tank body, and one end of the connecting mechanism is connected to the tank body. A parallel part is provided at the bottom corner of the connecting mechanism, and an air inlet pipe is provided in the parallel part and connected to the connecting mechanism.

[0011] Furthermore, the communication mechanism includes:

[0012] The liquid outlet pipe has one end connected to the bottom of the tank body, and the other end of the liquid outlet pipe forms an upward-opening bend.

[0013] The first connecting pipe has one end connected to the bend opening of the liquid outlet pipe, and the opening of the other end of the first connecting pipe faces upward.

[0014] A cavity tube, one end of which is connected to the first connecting pipe, a portion of which is higher than the opening of the tank body, and a second connecting pipe extending into the tank body is provided on one side of the cavity tube;

[0015] A transition tube is disposed on the upper part of the cavity tube, with one end of the transition tube connected to the cavity tube and the other end connected to the air outlet tube.

[0016] Furthermore, the diameter of the cavity tube is larger than the diameter of the first connecting tube.

[0017] Furthermore, the diameter of the transition tube is smaller than the diameter of the cavity tube, but larger than the diameter of the first connecting tube.

[0018] Furthermore, the bottom of the tank is provided with a sedimentation section, and the diameter of the bottom of the sedimentation section is larger than the diameter of the sedimentation port of the sedimentation section.

[0019] Furthermore, the opening at one end of the second connecting pipe that extends into the tank is flush with the liquid level inside the tank.

[0020] Furthermore, a cleaning chamber is provided in the middle of the transition tube, and a limit ring is provided at the bottom of the cleaning chamber.

[0021] Furthermore, the parallel section may be provided with a mixing pipe, which has an air inlet, a liquid inlet and a connecting section. The air inlet is connected to the air inlet pipe, the liquid inlet is connected to the liquid outlet pipe of the tank, and an extension pipe is provided inside the mixing pipe, which passes through the opening of the liquid inlet.

[0022] Furthermore, the end of the extension tube is bullet-shaped, and an air outlet is provided at the end of the extension tube, with the air outlets evenly distributed.

[0023] Furthermore, the diameter of the extension tube is smaller than the diameter of the mixing tube.

[0024] The technical effects and advantages of this invention are as follows:

[0025] This invention utilizes a circulating and gas-liquid mixing communication mechanism on one side of the tank. A parallel section is located at the bottom bend of the communication mechanism, connected to an air inlet pipe. Organic gas is discharged from the bottom into the communication mechanism through the air inlet pipe, thus mixing with the liquid to filter the gas. In use, the required liquid for filtering organic waste gas is added to the tank. When the tank is full, the liquid in the communication mechanism is level with the liquid in the tank because the communication mechanism is connected to the bottom of the tank. Continuous air intake through the air inlet pipe causes the gas to rise, and the pressure from the liquid at the bottom of the tank pushes the liquid in the communication mechanism upwards. A first connecting pipe continuously lifts and moves the liquid and gas upwards, allowing the organic gas to mix with the rising liquid. When the liquid enters the chamber, because the volume of the chamber is larger than that of the first connecting pipe, the organic gas and liquid tumble and mix inside the chamber, thus filtering the substances in the liquid and organic gas. During this process, as the organic gas and liquid continuously move upward from the bottom, the constantly tumbling liquid continues to rise. The mixed and rising liquid is discharged back into the tank through the second connecting pipe. At the same time, most of the organic gas mixed with the liquid continues to rise into the transition pipe. Even if foam is generated, it will dissipate in the transition pipe. The transition pipe can retain liquid droplets or water droplets generated after the foam breaks in the gas. The retained liquid returns to the chamber by its own gravity. Finally, the gas is discharged through the gas outlet or enters the next filtration tank for the filtration and recovery of other substances.

[0026] In this invention, the outlet of the second connecting pipe is flush with the liquid inside the tank, and the outlet of the second connecting pipe is close to the edge of the tank. When the liquid in the cavity is continuously discharged, the second connecting pipe can push the liquid along the edge of the tank clockwise or counterclockwise, thereby rotating the liquid inside the tank. This causes impurities generated by the combination of the liquid and organic gas to concentrate in the center of the tank. At the same time, a sedimentation section is provided at the bottom center of the tank to collect the sediment in the center, preventing the sediment from re-entering the connecting mechanism for circulation.

[0027] In this invention, the parallel section is replaced with a mixing pipe, which includes an air inlet, a liquid inlet, and a connecting section. An extension pipe is also provided inside the mixing pipe. The extension pipe is connected to the air inlet and extends beyond the opening of the liquid inlet. When vertically installed, the opening of the extension pipe is higher than the opening of the liquid inlet. This allows for better upward movement of the liquid during air discharge, preventing gas from reversing and entering the tank, thus affecting the mixing and lifting of the liquid and organic gas. Attached Figure Description

[0028] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention from a first perspective.

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention from a second perspective.

[0031] Figure 3 This is a top view of the structure of the present invention.

[0032] Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0033] Figure 5 This is a schematic diagram of the structure with the cleaning chamber added to this invention.

[0034] Figure 6 This is a schematic diagram of the structure with the cleaning chamber added to this invention.

[0035] Figure 7 This is a schematic diagram of the internal structure of the cleaning chamber added to the present invention.

[0036] Figure 8 This is a schematic diagram of the multi-level connection structure of the present invention.

[0037] In the diagram: 1. Tank body; 11. Liquid inlet; 12. Sedimentation section; 13. Sedimentation port; 2. Sewage pipe; 3. Liquid outlet pipe; 4. Parallel section; 5. Connecting mechanism; 501. First connecting pipe; 502. Cavity pipe; 5021. Vortex section; 503. Second connecting pipe; 504. Transition pipe; 505. Air outlet pipe; 506. Cleaning chamber; 5061. Limiting ring; 6. Air inlet pipe; 7. Switch valve; 8. Cover; 801. Connecting pipe; 100. Mixing pipe; 101. Air inlet; 102. Liquid inlet; 103. Connecting section; 104. Extension pipe; 105. Air outlet. Detailed Implementation

[0038] 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.

[0039] Figure 1 This is a three-dimensional structural diagram of the present invention from a first perspective. Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention from a second perspective. Figure 3 This is a top view of the structure of the present invention. Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure along the AA direction. Figure 5 This is a schematic diagram of the structure with the cleaning chamber added to this invention. Figure 6 This is a schematic diagram of the structure with the cleaning chamber added to this invention. Figure 7 This is a schematic diagram of the internal structure of the cleaning chamber added to the present invention. Figure 8 This is a schematic diagram of the multi-level connection structure of the present invention.

[0040] The solution in this embodiment, such as Figure 1 As shown, a chemical production organic waste gas recovery and treatment device is provided, including a tank 1 and a connecting mechanism 5. The tank 1 has an upward opening, and a sedimentation section 12 is provided at the bottom of the tank 1. The diameter of the bottom of the sedimentation section 12 is larger than the diameter of the sedimentation port 13 of the sedimentation section 12. The connecting mechanism 5 is provided on one side of the tank 1, and an inlet 11 is provided on the other side of the tank 1. A switch valve 7 is provided in the inlet 11, and the bottom end of the connecting mechanism 5 is connected to the tank 1 through an outlet pipe 3. A parallel part 4 is provided at the bottom corner of the connecting mechanism 5, and the outlet pipe 3 and the connecting mechanism 5 are fixedly connected by the parallel part 4. The parallel part 4 is provided with an air inlet pipe 6 connected to the connecting mechanism 5, and air is introduced into the connecting mechanism 5 through the air inlet pipe 6. The air inlet pipe 6 is connected to the outlet of the organic waste gas for air supply.

[0041] likeFigure 1 and Figure 2 As shown, the connecting mechanism 5 includes: an outlet pipe 3, a transition pipe 504, a first connecting pipe 501, and a cavity pipe 502. The transition pipe 504, cavity pipe 502, first connecting pipe 501, and outlet pipe 3 are connected and fixed from top to bottom. One end of the outlet pipe 3 is connected to the bottom of the tank 1, and liquid in the tank 1 is discharged through the outlet pipe 3. It should be noted that the liquid is a liquid that can mix with elements in organic gases, such as water. It should be noted that in chemical production, the organic waste gas components that can react with water mainly include esters, halogenated hydrocarbons, olefins, organometallic compounds, etc., and the other end of the outlet pipe 3 forms an upward-facing bend. One end of the first connecting pipe 501 is connected to the bend opening of the outlet pipe 3 and fixed by the parallel part 4. The other end of the first connecting pipe 501 is upward-facing. One end of the cavity pipe 502 is connected to the first connecting pipe 501. 1. A first connecting pipe 501 introduces liquid and air bubbles into a cavity 502. A portion of the cavity 502 is higher than the opening of the tank 1. When organic gas pushes the liquid into the cavity 502, there is sufficient space within the cavity 502 to accommodate the air bubbles generated by the gas and liquid, allowing the bubbles to burst in the upper part of the cavity 502. A second connecting pipe 503 is provided on one side of the cavity 502, extending into the tank 1. The second connecting pipe 503 can return the continuously pushed liquid from the cavity 502 back to the tank 1. A transition pipe 504 is located above the cavity 502. One end of the transition pipe 504 is connected to the cavity 502, and the other end is connected to the outlet pipe 505. The transition pipe 504 prevents bursting air bubbles from splashing into the outlet pipe 505 and thus avoiding them from entering the next organic gas filtration device. Specifically, as shown... Figure 8 As shown, the subsequent organic gas filtration device is the same as this device, but the built-in filter liquid is different. It realizes multi-stage connection, and through layer-by-layer filtration, the substances in the organic gas are filtered out and recovered. At the same time, the filtered gas can also be discharged to prevent gas pollution of the air.

[0042] It should be further explained that a vortex section 5021 is provided in the lower middle part of the cavity 502, which enhances the gas-liquid mixing effect.

[0043] It should be further noted that the diameter of the cavity tube 502 is larger than the diameter of the first connecting tube, which facilitates the diffusion of bubbles, releases the pressure of the gas rising, and prevents the liquid from continuing to rise.

[0044] It should be further noted that the diameter of the transition tube 504 is smaller than the diameter of the cavity tube 502, but larger than the diameter of the first connecting tube. The transition tube 504 is to prevent the generated bubbles from bursting and splashing into the exhaust tube 505.

[0045] It should be further explained that the opening of the end of the second connecting pipe 503 that extends into the tank 1 is flush with the liquid level inside the tank 1. After the liquid mixes with the organic gas, the water outlet of the second connecting pipe 503 pushes the water in the tank to move clockwise or counterclockwise, so that the sediment generated in the tank is concentrated in the sedimentation section 12 in the middle of the tank 1 by the rotation of the water in the cylinder. The sediment is collected in a concentrated manner through the sedimentation section 12 and then discharged and cleaned through the drain pipe 2.

[0046] Example 2:

[0047] It needs to be further explained that, such as Figure 5 As shown, a cleaning chamber 506 is provided in the middle of the transition tube 504, and a limiting ring 5061 is provided at the bottom of the cleaning chamber 506. The cleaning chamber 506 is provided to prevent the dirt carried in the air bubble from splashing onto the inner wall of the transition tube 504 when it breaks. By providing the cleaning chamber, it is effectively prevented that dirt contaminates or adheres to the entire transition tube 504.

[0048] Example 3:

[0049] It should be further noted that the parallel section 4 may be equipped with a mixing pipe 100, such as... Figure 7 As shown, the mixing pipe 100 has an air inlet 101, a liquid inlet 102, and a connecting part 103. The air inlet 101 is connected to the air inlet pipe 6, and the liquid inlet 102 is connected to the liquid outlet pipe 3 of the tank body 1. An extension pipe 104 is provided inside the mixing pipe 100. The extension pipe 104 passes through the opening of the liquid inlet 102 to prevent the organic gas from directly entering the tank body 1 through the liquid outlet pipe 3. At the same time, the end of the extension pipe 104 is bullet-shaped, and an air outlet 105 is provided at the end of the extension pipe 104. The air outlets 105 are evenly arranged so that the gas and liquid can be better mixed and filtered during the gas outlet.

[0050] It should be further noted that the diameter of the extension tube 104 is smaller than the diameter of the mixing tube 100, so that it can be fitted inside the entire mixing tube 100.

[0051] Example 4:

[0052] like Figure 5As shown, a cover 8 is provided on the upper part of the tank 1. The cover 8 has a connecting pipe 801, one end of which is connected to the cleaning chamber 506. The cover 8 is provided to prevent the mixed liquid from being mixed with some organic gases. The mixed organic gases will evaporate from the opening of the tank 1, which may pollute the air or cause gas waste. Therefore, the cover 8 is installed to guide the gas generated at the opening of the tank 1 into the cleaning chamber 506 through the connecting pipe 801 and discharge it. At the same time, after the cover 8 is installed, while the liquid is continuously circulating and filtering, the gas overflowing from the liquid can increase the air pressure in the cavity formed by the upper part of the tank 1 and the cover 8, thereby increasing the pressure on the liquid and enabling better circulation.

[0053] Working principle of this invention:

[0054] In use, a circulating and gas-liquid mixing communication mechanism 5 is provided on one side of the tank 1. A parallel section 4 is provided at the bottom bend of the communication mechanism 5, and the parallel section 4 is connected to an air inlet pipe 6. Organic gas is discharged from the bottom into the communication mechanism 5 through the air inlet pipe 6, thereby mixing with the liquid to filter the gas. During use, the required liquid for filtering organic waste gas is added to the tank 1. When the tank 1 is full, because the communication mechanism 5 is connected to the bottom of the tank 1, the liquid in the communication mechanism 5 is level with the liquid in the tank 1. At this time, through the continuous intake of air through the air inlet pipe 6, the rising of the gas, and the pressure from the liquid at the bottom of the tank 1, pushes the gas in the communication mechanism 5... The liquid is moved upwards; the first connecting pipe 501 continuously lifts and moves the liquid and gas upwards. When the organic gas and the upward-moving liquid enter the cavity 502, because the volume of the cavity 502 is larger than that of the first connecting pipe 501, the organic gas and liquid tumble and mix in the cavity 502, thereby filtering and fusing the substances in the liquid and organic gas. During this process, as the organic gas and liquid are continuously supplied from the bottom upwards, the constantly tumbling liquid continues to move upwards, and the mixed upward-moving liquid is discharged back into the tank 1 through the second connecting pipe 503. At the same time, most of the organic gas mixed with the liquid continues to enter the transition pipe 504. The function of the transition pipe 504 is to remove the liquid water carried in the gas. The liquid is retained in the filter, and the retained liquid returns to the cavity 502 under its own gravity. Finally, the gas is discharged through the outlet pipe 505 or enters the next filtration tank 1 for filtration and recovery of other substances. At the same time, the outlet of the second connecting pipe 503 is flush with the liquid in the tank 1, and the outlet of the second connecting pipe 503 is close to the edge of the tank 1. When the liquid in the cavity 502 is continuously discharged, the second connecting pipe 503 can push the liquid along the edge of the tank 1 clockwise or counterclockwise, thereby rotating the liquid in the tank 1. This causes impurities generated by the combination of the liquid and organic gas to concentrate in the center of the tank 1. Meanwhile, a sedimentation section 12 is provided in the middle of the bottom of the tank 1. Through sedimentation... Section 12 collects the sediment in the middle to prevent it from re-entering the connecting mechanism 5 for circulation. The parallel section 4 is replaced by a mixing pipe 100, which includes an air inlet 101, a liquid inlet 102, and a connecting section 103. An extension pipe 104 is also provided in the mixing pipe 100. The extension pipe 104 is connected to the air inlet 101 and extends beyond the opening of the liquid inlet 102. When vertically installed, the opening of the extension pipe 104 is higher than the opening of the liquid inlet 102. This allows for better upward movement of the liquid during air discharge, preventing gas from flowing back into the tank 1 and affecting the mixing and lifting of the liquid and organic gas, thus accelerating the filtration and recovery of the organic gas.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 chemical production organic waste gas recovery and treatment device, characterized in that, include, A tank having an upward-facing opening; A connecting mechanism is provided on one side of the tank body, and one end of the connecting mechanism is connected to the tank body. A parallel part is provided at the bottom corner of the connecting mechanism, and an air inlet pipe is provided in the parallel part and connected to the connecting mechanism. The communication mechanism includes: The liquid outlet pipe has one end connected to the bottom of the tank body, and the other end of the liquid outlet pipe forms an upward-opening bend. The first connecting pipe has one end connected to the bend opening of the liquid outlet pipe, and the opening of the other end of the first connecting pipe faces upward. A cavity tube, one end of which is connected to the first connecting pipe, a portion of which is higher than the opening of the tank body, and a second connecting pipe extending into the tank body is provided on one side of the cavity tube; A transition tube is provided at the upper part of the cavity tube, with one end of the transition tube connected to the cavity tube and the other end connected to the air outlet tube; The diameter of the cavity tube is larger than the diameter of the first connecting tube; The diameter of the transition tube is smaller than the diameter of the cavity tube, but larger than the diameter of the first connecting tube.

2. The chemical production organic waste gas recovery and treatment device according to claim 1, characterized in that, The bottom of the tank is provided with a sedimentation section, and the diameter of the bottom of the sedimentation section is larger than the diameter of the sedimentation port of the sedimentation section.

3. The chemical production organic waste gas recovery and treatment device according to claim 1, characterized in that, The opening at one end of the second connecting pipe that extends into the tank is flush with the liquid level inside the tank.

4. The chemical production organic waste gas recovery and treatment device according to claim 1, characterized in that, A cleaning chamber is provided in the middle of the transition tube, and a limit ring is provided at the bottom of the cleaning chamber.

5. The chemical production organic waste gas recovery and treatment device according to claim 1, characterized in that, The parallel section is provided with a mixing pipe, which has an air inlet, a liquid inlet and a connecting section. The air inlet is connected to the air inlet pipe, and the liquid inlet is connected to the liquid outlet pipe of the tank. An extension pipe is provided inside the mixing pipe, and the extension pipe passes through the opening of the liquid inlet.

6. The chemical production organic waste gas recovery and treatment device according to claim 5, characterized in that, The end of the extension tube is bullet-shaped, and an air outlet is provided at the end of the extension tube, with the air outlets evenly arranged.

7. The chemical production organic waste gas recovery and treatment device according to claim 6, characterized in that, The diameter of the extension tube is smaller than the diameter of the mixing tube.

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