A non-methane total hydrocarbon online monitoring exhaust gas pretreatment device

Abstract

This invention discloses an online monitoring device for non-methane total hydrocarbons in exhaust gas pretreatment, comprising a housing, a combustion chamber, and a diversion treatment component. The housing contains an adsorption component, an inlet pipe connected to one side of the housing, a flow interception component inside the inlet pipe, and an outlet pipe connected to the top of the housing. The combustion chamber is installed on one side of the housing and contains an igniter. By adding the diversion treatment component and cooperating with the flow interception component and push-pull component, this invention can automatically detect and divert the gas after combustion, reducing the content of organic matter in the exhaust gas and removing carbon dioxide from the exhaust gas, effectively improving the safety of the exhaust gas. During diversion treatment, the flow rate of the exhaust gas entering the inlet pipe can be changed, preventing excessive exhaust gas from accumulating with the return gas and causing incomplete combustion of organic matter in the combustion chamber. Flow interception effectively improves the combustion of organic matter in the combustion chamber.

Description

Technical Field

[0001] This invention relates to the technical field of waste gas pretreatment devices, specifically a waste gas pretreatment device for online monitoring of non-methane total hydrocarbons. Background Technology

[0002] Non-methane hydrocarbons refer to the sum of all hydrocarbon compounds except methane. Its main components include ethylene, ethane, propylene, propane, butene, butane, and other organic compounds. Non-methane hydrocarbon emissions primarily originate from waste gases generated during industrial production processes, such as those from chemical plants, oil refineries, and printing plants.

[0003] Considering the complex composition and high concentration of non-methane total hydrocarbon waste gas, activated carbon adsorption + catalytic combustion technology is generally used to treat the waste gas: the waste gas enters the activated carbon adsorption device and is evenly distributed by the airflow distribution device; when the waste gas passes through the activated carbon layer, the organic matter is adsorbed by the micropores on the surface of the activated carbon. After the adsorption is saturated, the organic matter in the waste gas is reduced to an acceptable concentration.

[0004] After adsorption, the waste gas enters the catalytic combustion device and is evenly distributed by the airflow distribution device. When the waste gas passes through the catalyst bed, the organic matter in the waste gas undergoes an oxidation reaction with oxygen. The carbon dioxide and water generated by the reaction are released in the form of heat, which achieves the effect of burning the organic matter in the waste gas. However, the organic matter in the waste gas cannot be completely burned during the combustion process, resulting in the waste gas still containing organic matter after combustion, which can easily cause environmental impact and reduce the efficiency of organic matter removal from the waste gas. Summary of the Invention

[0005] The purpose of this invention is to provide an online monitoring device for non-methane total hydrocarbons that can reduce the organic content in exhaust gas, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an online monitoring and pretreatment device for non-methane total hydrocarbons, comprising a housing, a combustion chamber, and a diversion treatment assembly; the housing contains an adsorption assembly, an inlet pipe connected to one side of the housing, a flow interception assembly inside the inlet pipe, and an outlet pipe connected to the top of the housing; the combustion chamber is installed on one side of the housing, and an igniter is located inside the combustion chamber; a hollow circular tube is located above the igniter, one side of the hollow circular tube is connected to one end of the outlet pipe; an oxygen supply assembly is located at the bottom of the combustion chamber, and an exhaust pipe is connected to the top of the combustion chamber; The diversion treatment component is installed at the other end of the exhaust pipe to guide the gas discharged from the exhaust pipe. By adding the diversion treatment component and the corresponding interception component and push-pull component, the gas after combustion can be automatically detected and diverted to reduce the content of organic matter in the exhaust gas. At the same time, carbon dioxide in the exhaust gas is removed, which effectively improves the safety of the exhaust gas. During the diversion treatment, the flow rate of the exhaust gas entering the intake pipe can be changed to avoid excessive exhaust gas entering and overlapping with the return gas, which would cause incomplete combustion of organic matter in the combustion chamber. By intercepting the flow, the combustion of organic matter in the combustion chamber can be effectively improved.

[0007] Preferably, the diversion treatment assembly includes a non-methane total hydrocarbon detector installed inside the exhaust pipe. One end of the exhaust pipe is connected to a first U-shaped tube, and the two ends of the first U-shaped tube are respectively connected to a first cylinder and a second cylinder. The first cylinder and the second cylinder are respectively provided with a first plug and a second plug. One end of the first plug and the second plug are fixedly provided with a fixing rod, and the other end of the fixing rod is fixedly connected to a bracket. One side of the first cylinder and the second cylinder are connected to each other through a second U-shaped tube. A vertical pipe is connected in the middle of the second U-shaped tube. One end of the vertical pipe is connected to a treatment box. A first induced draft fan is provided on the vertical pipe. One end of the vertical pipe extends to the bottom of the treatment box. The treatment box contains a treatment liquid. The diversion treatment assembly further includes a third cylinder and a fourth cylinder. Each of the third and fourth cylinders has a third and a fourth plug inside. One side of each plug is fixedly connected to the bracket via a connecting rod. One end of each plug is connected to the treatment box via a connecting pipe. One end of the third cylinder is connected to the air inlet pipe via a return pipe, and one end of the fourth cylinder is connected to an exhaust pipe. One side of the bracket is connected to a push-pull assembly, and another side is connected to a flow-blocking assembly. By adding the diversion treatment assembly, the exhaust gas after combustion can be detected, and qualified exhaust gas and unqualified exhaust gas can be diverted for treatment, reducing the emission of organic matter in the exhaust gas and effectively improving the cleanliness of the surrounding environment.

[0008] Preferably, the push-pull assembly includes a hydraulic rod fixedly disposed on one side of the bracket, the other end of the hydraulic rod being connected to a hydraulic cylinder, and the hydraulic cylinder being fixedly connected to the outer wall of the housing. The push-pull assembly can drive the movement of the bracket, thereby realizing the push-pull of the first, second, third, and fourth plungers.

[0009] Preferably, the flow interception assembly includes a flow interception baffle disposed inside the air intake pipe. A rotating shaft is fixedly disposed in the middle of the flow interception baffle. Both ends of the rotating shaft are rotatably connected to the inner wall of the air intake pipe. One end of the rotating shaft passes through the air intake pipe and extends outward to be fixedly connected to a gear. A toothed plate is meshed on one side of the gear. One side of the toothed plate is fixedly connected to the bracket through a vertical rod. The flow interception assembly can adjust the flow rate of the exhaust gas entering the air intake pipe, reduce the entry of exhaust gas when unqualified gas flows back, and ensure the complete combustion of gas and exhaust gas inside the combustion chamber.

[0010] Preferably, the oxygen supply assembly includes an oxygen supply pipe located at the bottom of the inner side of the combustion chamber. The oxygen supply pipe has multiple overflow holes evenly spaced on one side. An oxygen inlet pipe is connected to one side of the oxygen supply pipe. The other end of the oxygen inlet pipe passes through the combustion chamber and extends outward to connect with the second induced draft fan. The oxygen supply assembly can provide oxygen to the combustion chamber, thus providing the necessary combustion conditions.

[0011] Preferably, the adsorption assembly includes an activated carbon adsorption plate installed inside the box. The activated carbon adsorption plate is S-shaped, and multiple crossbars are fixed at equal intervals on both sides of the inside of the box. The activated carbon adsorption plate is placed on the crossbars, and the adsorption assembly can remove odors from the exhaust gas.

[0012] Preferably, the top of the treatment box is connected to a feed pipe, and the side wall of the treatment box is connected to a discharge pipe. Both the feed pipe and the discharge pipe are equipped with control valves, which can periodically replace the lime water inside the treatment box.

[0013] Preferably, an observation window is provided on one side of the treatment box, and a transparent glass is fixedly installed on the observation window to facilitate the staff to observe the changes and reaction status of the treatment liquid inside the treatment box.

[0014] Preferably, a support plate is provided below the combustion chamber, and one end of the support plate is fixedly connected to the outer wall of the combustion chamber, which can support the combustion chamber, prevent it from being suspended in the air, and increase the safety of placement and use.

[0015] Preferably, the treatment liquid inside the treatment tank is lime water, and the front side of the tank is provided with a movable door.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention optimizes existing online non-methane total hydrocarbon detection and exhaust gas treatment devices by adding a diversion treatment component and cooperating interception and push-pull components. It can automatically detect and divert the gas after combustion, reducing the content of organic matter in the exhaust gas and removing carbon dioxide from the exhaust gas, effectively improving the safety of the exhaust gas. During the diversion treatment, the flow rate of the exhaust gas entering the inlet pipe can be changed to avoid excessive exhaust gas entering and overlapping with the return gas, which would cause incomplete combustion of organic matter in the combustion chamber. By intercepting the flow, the combustion of organic matter in the combustion chamber can be effectively improved, thus improving the removal efficiency of organic matter. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the rear view in this invention; Figure 3 This is a schematic diagram of the structure of the diversion processing component in this invention; Figure 4 This is a cross-sectional view of the flow splitting processing component in this invention; Figure 5 These are cross-sectional views of the first, second, third, and fourth cylindrical bodies in this invention; Figure 6 This is a schematic diagram of the support structure in this invention; Figure 7 This is a schematic diagram of the internal structure of the box in this invention; Figure 8 This is a schematic diagram of the structure separating the activated carbon adsorption plate and the crossbar in this invention; Figure 9 This is a schematic diagram of the internal structure of the combustion chamber in this invention.

[0018] In the diagram: 1. Housing; 2. Inlet pipe; 3. Outlet pipe; 4. Combustion chamber; 5. Igniter; 6. Hollow round tube; 7. Exhaust pipe; 8. Non-methane total hydrocarbon detector; 9. First U-shaped tube; 10. First cylinder; 11. Second cylinder; 12. First plunger; 13. Second plunger; 14. Fixing rod; 15. Support; 16. Second U-shaped tube; 17. Vertical pipe; 18. Processing box; 19. Third cylinder; 20. Fourth cylinder; 21. Third plunger 21. Column; 22. Fourth plug; 23. Connecting pipe; 24. Return pipe; 25. Discharge pipe; 26. Hydraulic rod; 27. Hydraulic cylinder; 28. Cut-off baffle; 29. ​​Rotating shaft; 30. Gear; 31. Gear plate; 32. Vertical rod; 33. First induced draft fan; 34. Oxygen supply pipe; 35. Oxygen inlet pipe; 36. Second induced draft fan; 37. Activated carbon adsorption plate; 38. Horizontal rod; 39. Feed pipe; 40. Discharge pipe; 41. Transparent glass; 42. Support plate. Detailed Implementation

[0019] 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. Example 1

[0020] Please see Figures 1-9 The diagram shows an online monitoring and pretreatment device for non-methane total hydrocarbons, comprising a housing 1, a combustion chamber 4, and a diversion treatment component. The housing 1 contains an adsorption component, an inlet pipe 2 connected to one side of the housing 1, a flow interception component inside the inlet pipe 2, and an outlet pipe 3 connected to the top of the housing 1. The combustion chamber 4 is installed on one side of the housing 1 and contains an igniter 5. A hollow circular tube 6 is located above the igniter 5, with one side of the hollow circular tube 6 connected to one end of the outlet pipe 3. An oxygen supply component is located at the bottom of the combustion chamber 4, and an exhaust pipe 7 is connected to the top of the combustion chamber 4. The diversion treatment component is installed at the other end of the exhaust pipe 7 to guide and discharge the gas discharged from the exhaust pipe 7. Please see Figures 1-6 The diversion treatment assembly shown in the figure includes a non-methane total hydrocarbon detector 8 installed inside the exhaust pipe 7. One end of the exhaust pipe 7 is connected to a first U-shaped pipe 9. The two ends of the first U-shaped pipe 9 are respectively connected to a first cylinder 10 and a second cylinder 11. The first cylinder 10 and the second cylinder 11 are respectively provided with a first plug 12 and a second plug 13. One end of the first plug 12 and the second plug 13 are fixedly provided with a fixing rod 14. The other end of the fixing rod 14 is fixedly connected to a bracket 15. One side of the first cylinder 10 and the second cylinder 11 is connected to each other through a second U-shaped pipe 16. The middle of the second U-shaped pipe 16 is connected to a vertical pipe 17. One end of the vertical pipe 17 is connected to a treatment box 18. A first induced draft fan 33 is provided on the vertical pipe 17. One end of the vertical pipe 17 extends to the bottom of the treatment box 18. The treatment box 18 is provided with a treatment liquid, which is lime water. The front of the box 1 is provided with a movable door. Please see Figures 1-6The diversion processing assembly shown in the figure also includes a third cylinder 19 and a fourth cylinder 20. The interior of the third cylinder 19 and the fourth cylinder 20 is provided with a third plug 21 and a fourth plug 22. One side of the third plug 21 and the fourth plug 22 is fixedly connected to the bracket 15 through a connecting rod. One end of the third plug 21 and the fourth plug 22 is connected to the processing box 18 through a connecting pipe 23. One end of the third cylinder 19 is connected to the air inlet pipe 2 through a return pipe 24. One end of the fourth cylinder 20 is connected to the discharge pipe 25. One side of the bracket 15 is connected to the push-pull assembly, and one side of the bracket 15 is connected to the interception assembly. Please see Figure 1 , Figure 3 , Figure 4 and Figure 6 The push-pull assembly shown in the figure includes a hydraulic rod 26 fixedly mounted on one side of the bracket 15. The other end of the hydraulic rod 26 is connected to a hydraulic cylinder 27, which is fixedly connected to the outer wall of the housing 1.

[0021] Please see Figure 1 , Figures 3-6 The flow-blocking assembly shown in the figure includes a flow-blocking baffle 28 located inside the air intake pipe 2. A rotating shaft 29 is fixedly provided in the middle of the flow-blocking baffle 28. Both ends of the rotating shaft 29 are rotatably connected to the inner wall of the air intake pipe 2. One end of the rotating shaft 29 passes through the air intake pipe 2 and extends outward to be fixedly connected to the gear 30. A toothed plate 31 is meshed on one side of the gear 30. One side of the toothed plate 31 is fixedly connected to the bracket 15 through a vertical rod 32.

[0022] When using the online monitoring and pretreatment device for non-methane total hydrocarbons: First, the exhaust gas to be discharged is discharged into the inlet pipe 2 through the exhaust fan. The exhaust gas entering the inlet pipe 2 will be discharged into the interior of the housing 1 through the other end of the inlet pipe 2. The exhaust gas entering the housing 1 will be treated by the adsorption component to remove organic matter and odor from the exhaust gas, reducing the organic matter content and odor concentration. Then, it will be discharged into the interior of the combustion chamber 4 through the exhaust pipe 3 at the top of the housing 1.

[0023] After the exhaust gas filtered by the adsorption component is discharged into the combustion chamber 4 through the exhaust pipe 3 and the hollow round pipe 6, the oxygen supply component is activated to supply oxygen to the inside of the combustion chamber 4 for combustion. Then the igniter 5 is activated. At this time, the inside of the combustion chamber 4 has the conditions for combustion, with combustible material, ignition source and oxygen. The organic matter in the exhaust gas can be burned inside the combustion chamber. After the organic matter is completely burned inside the combustion chamber 4, carbon dioxide and water will be produced. When too much exhaust gas enters the combustion chamber 4, the organic matter in the exhaust gas will not be completely burned. The gas after combustion will contain not only carbon dioxide and water but also the organic matter in the exhaust gas. At this time, the gas discharged after combustion needs to be treated by the diversion component. The combustion gases will be discharged through the exhaust pipe at the top of the combustion chamber 4, and the non-methane total hydrocarbon detector 8 installed on the inner wall of the exhaust pipe 7 will detect the discharged gases. When the non-methane total hydrocarbon detector 8 detects a high organic content in the gas, the hydraulic cylinder 27 controlled by the controller will be activated. The activation of the hydraulic cylinder 27 will drive the hydraulic rod 26 to extend, which will push the support 15 to move closer to the second and fourth cylinders. At this time, the second and fourth plugs will move to their ends to block the ends of the first and second U-shaped pipes, as well as the ends of the connecting pipe 23 and the discharge pipe 25. Meanwhile, the first and third plugs inside the first and third cylinders will move to the other side, so that the first cylinder 10 is connected to the first and second U-shaped pipes, and the third cylinder 19 is connected to the connecting pipe 23 and the return pipe 24. At this time, the gas discharged from the exhaust pipe 7 into the first U-shaped pipe 9 will first enter the first cylinder 10, and then be discharged from the first cylinder 10... The gas enters the second U-shaped pipe 16 connected to it, and then enters the vertical pipe 17 through the second U-shaped pipe 16. The first induced draft fan 33 on the vertical pipe 17 introduces the gas in the vertical pipe 17 into the treatment liquid inside the treatment box 18. The treatment liquid is lime water. After the gas enters the treatment liquid, the carbon dioxide in the exhaust gas will dissolve in the lime water, which can remove the carbon dioxide in the gas. The gas containing organic matter overflows through the connecting pipe 23 on one side of the treatment box 18 and enters the third cylinder 19. The return pipe 24 connected to one side of the third cylinder 19 discharges it into the inlet pipe 2. One end of the inlet pipe 2 sends it back into the box 1, and then through the outlet pipe 3 at the top of the box 1, it is sent into the combustion box 4 for re-combustion. This realizes the cyclic combustion treatment of the organic matter in the gas, realizes the complete combustion of organic matter in the exhaust gas, reduces the discharge of organic matter in the exhaust gas, reduces the impact on the surrounding air environment, and improves the compliance of exhaust gas emissions.

[0024] When the non-methane total hydrocarbon detector 8 detects a high content of organic matter, causing the hydraulic cylinder 27 to push out the hydraulic rod 26, it drives the bracket 15 to move. During the movement of the bracket 15, the vertical rod 32 drives the toothed plate 31 to move. The movement of the toothed plate 31 engages the gear 30 to rotate. Since the gear 30 is fixedly installed on the rotating shaft 29, it drives the rotating shaft 29 to rotate. The rotating shaft 29 is installed on the intake pipe 2, and a baffle 28 is fixedly installed inside the intake pipe 2 and located on the rotating shaft 29. At this time, the rotation... Shaft 29 can drive the baffle 28 to rotate, causing the horizontally placed baffle 28 to tilt, reducing the gap between the two ends of the baffle 28 and the inner wall of the intake pipe 2. At this time, the flow rate of the exhaust gas in the intake pipe 2 can be controlled, reducing the amount of exhaust gas entering. The gas returning to the intake pipe 2 and the newly entering exhaust gas enter the housing 1 together, and then enter the combustion chamber 4 for combustion, reducing the content of exhaust gas and effectively improving the combustion of organic matter, thereby reducing the flow of exhaust gas in the intake pipe 2.

[0025] When the non-methane total hydrocarbon detector 8 detects that the content of organic matter in the exhaust gas is low enough to meet emission requirements, the controller activates the hydraulic cylinder, causing the hydraulic rod 26 to retract. The retraction of the hydraulic rod 26 pulls the support 15 towards the side closer to the first and third cylinders. At this time, the first plunger 12 blocks the connection between the first cylinder 10 and the first and second U-shaped tubes, and the third plunger 21 blocks the connection between the third cylinder 19 and the return pipe 24 and the connecting pipe 23. After the second and fourth plungers move, the connection between the second cylinder 11 and the first and second U-shaped tubes opens, and the connection between the fourth cylinder 20 and the connecting pipe 23 and the exhaust pipe 25 opens. At this time, the gas in the exhaust pipe 7 will be discharged into the second cylinder 11 through the first U-shaped tube 9. Then, the gas enters the second U-shaped pipe 16 through the second cylinder 11, and then flows into the vertical pipe 17 through the second U-shaped pipe 16. One end of the vertical pipe 17 flows into the interior of the treatment tank 18, where the gas comes into contact with the treatment liquid in the treatment tank 18. At this time, the carbon dioxide in the gas reacts with the lime water in the treatment tank 18, which can absorb and remove the carbon dioxide in the gas. The gas that has reacted with the lime water in the treatment liquid will overflow and enter the fourth cylinder 20 through the connecting pipe 23 on one side of the treatment tank 18. It will then be discharged through the discharge pipe 25 connected to one side of the fourth cylinder 20, thus achieving the discharge of the treated gas, reducing the carbon dioxide content, reducing carbon dioxide emissions, and effectively reducing environmental pollution.

[0026] When the non-methane total hydrocarbon detector 8 detects a low content of organic matter that meets emission standards, the hydraulic cylinder 27 is activated, causing the hydraulic rod 26 to retract. This causes the support 15 to move in the opposite direction, which in turn causes the vertical rod 32 to pull the toothed plate 31 in the opposite direction. This engages the gear 30, causing the rotating shaft 29 to rotate the baffle 28 in the opposite direction. The baffle 28 then returns to its original position, restoring the flow rate of the exhaust gas in the intake pipe 2 to its previous speed. This device has a simple structure and is easy to operate. It can automatically detect and divert the gas after combustion, reducing the content of organic matter in the exhaust gas. At the same time, it can remove carbon dioxide from the exhaust gas, effectively improving the safety of the exhaust gas. During the diversion process, it can change the flow rate of the exhaust gas entering the intake pipe 2, preventing excessive exhaust gas from accumulating with the return gas and causing incomplete combustion of organic matter in the combustion chamber 4. By diverting the flow, it can effectively improve the combustion of organic matter in the combustion chamber 4, thus improving the efficiency of organic matter removal. Example 2

[0027] Please see Figures 1-9This embodiment further illustrates Example 1. The box 1, combustion chamber 4, and diversion processing assembly shown in the figure are as follows: The box 1 contains an adsorption assembly; one side of the box 1 is connected to an air inlet pipe 2; the air inlet pipe 2 contains a flow-blocking assembly; and the top of the box 1 is connected to an air outlet pipe 3. The combustion chamber 4 is installed on one side of the box 1, and an igniter 5 is installed inside the combustion chamber 4. A hollow circular tube 6 is located above the igniter 5, and one side of the hollow circular tube 6 is connected to one end of the air outlet pipe 3. An oxygen supply assembly is located at the bottom of the combustion chamber 4, and an exhaust pipe 7 is connected to the top of the combustion chamber 4. The diversion processing assembly is installed at the other end of the exhaust pipe 7 to guide and discharge the gas discharged from the exhaust pipe 7.

[0028] Please see Figures 1-3 , Figures 7-9 The oxygen supply assembly shown in the figure includes an oxygen supply pipe 34 located at the bottom of the inner side of the combustion chamber 4. Multiple overflow holes are equally spaced on one side of the oxygen supply pipe 34. An oxygen inlet pipe 35 is connected to one side of the oxygen supply pipe 34. The other end of the oxygen inlet pipe 35 passes through the combustion chamber 4 and extends outward to connect with the second induced draft fan 36.

[0029] Please see Figures 7-9 The adsorption assembly shown in the figure includes an activated carbon adsorption plate 37 installed inside the box 1. The activated carbon adsorption plate 37 is S-shaped, and multiple crossbars 38 are fixed at equal intervals on both sides of the inside of the box 1. The activated carbon adsorption plate 37 is placed on the crossbars 38.

[0030] In this embodiment, an oxygen supply component is provided inside the combustion chamber 4 to supply oxygen to the combustion chamber 4 so that non-methane hydrocarbons can burn inside the combustion chamber 4. In use, the second induced draft fan 36 on the oxygen inlet pipe 35 is started. The second induced draft fan 36 can send outside air into the oxygen supply pipe 34 inside the combustion chamber 4 through the oxygen inlet pipe 35. Then, the air is discharged into the combustion chamber 4 through the overflow hole opened on the oxygen supply pipe 34. The igniter 5 ignites the gas discharged from the outlet pipe 3 into the hollow circular pipe 6. The non-methane hydrocarbons discharged from the hollow circular pipe 6 are then burned. During combustion, the oxygen is provided by the incoming air, which makes oxygen supply convenient. At the same time, the gas after combustion is discharged through the exhaust pipe 7 and then divided by the diversion treatment component. The oxygen supply component can provide the oxygen necessary for combustion inside the combustion chamber 4.

[0031] An adsorption assembly is installed inside the housing 1 to filter the exhaust gas discharged into the housing 1 through the air inlet pipe 2. The exhaust gas moves upward from the bottom of the housing 1 and needs to pass through the activated carbon adsorption plate 37 inside the housing 1 multiple times. At this time, the micropores of the activated carbon can filter the organic matter in the exhaust gas and absorb the odor in the exhaust gas, reducing the odor in the exhaust gas. The activated carbon adsorption plate 37 is placed on the crossbar 38, which makes it easy to remove, replace and install the activated carbon adsorption plate 37 inside the housing 1, effectively reducing the difficulty of replacing the activated carbon adsorption plate 37 for the staff. Example 3

[0032] Please see Figures 1-9 This embodiment further illustrates other embodiments. The box 1, combustion chamber 4, and diversion processing assembly shown in the figure are as follows: The box 1 has an adsorption assembly inside; an air inlet pipe 2 is connected to one side of the box 1; a flow-blocking assembly is installed inside the air inlet pipe 2; and an air outlet pipe 3 is connected to the top of the box 1. The combustion chamber 4 is installed on one side of the box 1, and an igniter 5 is installed inside the combustion chamber 4. A hollow circular tube 6 is located above the igniter 5, and one side of the hollow circular tube 6 is connected to one end of the air outlet pipe 3. An oxygen supply assembly is installed at the bottom of the combustion chamber 4, and an exhaust pipe 7 is connected to the top of the combustion chamber 4. The diversion processing assembly is installed at the other end of the exhaust pipe 7 to guide and discharge the gas discharged from the exhaust pipe 7.

[0033] Please see Figure 2 The top of the processing box 18 in the figure is connected to a feed pipe 39, and the side wall of the processing box 18 is connected to a discharge pipe 40. Both the feed pipe 39 and the discharge pipe 40 are equipped with control valves. Please see Figure 4 The processing box 18 shown in the figure has an observation window on one side, and a transparent glass 41 is fixedly installed on the observation window.

[0034] Please see Figure 8 As shown in the figure, a support plate 42 is provided below the combustion box 4, and one end of the support plate 42 is fixedly connected to the outer wall of the combustion box 4.

[0035] In this embodiment, by providing an inlet pipe 39 and a outlet pipe 40 on the top and bottom sides of the treatment tank 18, it is convenient to add lime water into the treatment tank 18 and to discharge the liquid inside the treatment tank 18 after use, thus realizing the replacement of the solution inside the treatment tank 18 and making the replacement of lime water inside the treatment tank 18 convenient. An observation window with transparent glass 41 is provided on one side of the treatment tank 18, which allows the state of the treatment liquid in the treatment tank 18 to be observed, making it convenient for the staff to replace the solution inside the treatment tank 18 in a timely manner. A support plate 42 is provided below the combustion tank 4, which can support the combustion tank 4 and prevent the combustion tank 4 from being placed in the air, thus increasing the safety of the combustion tank 4 during use and placement.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-methane total hydrocarbon on-line monitoring exhaust gas pretreatment device characterized by, include: Box (1), the inside of the box (1) is provided with an adsorption component, one side of the box (1) is connected to an air inlet pipe (2), the inside of the air inlet pipe (2) is provided with a flow interception component, and the top of the box (1) is connected to an air outlet pipe (3). Combustion box (4), the combustion box (4) is installed on one side of the box body (1), and the combustion box (4) is equipped with an igniter (5) inside, a hollow round tube (6) is provided above the igniter (5), one side of the hollow round tube (6) is connected to one end of the exhaust pipe (3), the bottom of the combustion box (4) is equipped with an oxygen supply component, and the top of the combustion box (4) is connected to an exhaust pipe (7). The diversion processing component is installed at the other end of the exhaust pipe (7) to guide and discharge the gas discharged from the exhaust pipe (7); The diversion processing assembly includes a non-methane total hydrocarbon detector (8) installed inside the exhaust pipe (7). One end of the exhaust pipe (7) is connected to a first U-shaped tube (9), and both ends of the first U-shaped tube (9) are respectively connected to a first cylinder (10) and a second cylinder (11). The first cylinder (10) and the second cylinder (11) are respectively provided with a first plug (12) and a second plug (13). One end of the first plug (12) and the second plug (13) is fixedly provided with a fixing rod (14). The other end of each of the fixed rods (14) is fixedly connected to the bracket (15). The first cylinder (10) and the second cylinder (11) are connected by a second U-shaped tube (16) on one side. A vertical tube (17) is connected in the middle of the second U-shaped tube (16). One end of the vertical tube (17) is connected to the treatment box (18). A first blower (33) is provided on the vertical tube (17). One end of the vertical tube (17) extends to the bottom of the treatment box (18). The treatment box (18) contains treatment liquid. The diversion processing assembly further includes a third cylinder (19) and a fourth cylinder (20). The third cylinder (19) and the fourth cylinder (20) are each provided with a third plug (21) and a fourth plug (22). One side of the third plug (21) and the fourth plug (22) are fixedly connected to the bracket (15) through a connecting rod. One end of the third plug (21) and the fourth plug (22) are connected to the processing box (18) through a connecting pipe (23). One end of the third cylinder (19) is connected to the air inlet pipe (2) through a return pipe (24). One end of the fourth cylinder (20) is connected to an exhaust pipe (25). One side of the bracket (15) is connected to a push-pull assembly, and one side of the bracket (15) is connected to a flow interception assembly. The push-pull assembly includes a hydraulic rod (26) fixedly disposed on one side of the bracket (15), the other end of the hydraulic rod (26) being connected to a hydraulic cylinder (27), and the hydraulic cylinder (27) being fixedly connected to the outer wall of the housing (1); The flow-blocking assembly includes a flow-blocking baffle (28) disposed inside the air intake pipe (2). A rotating shaft (29) is fixedly disposed in the middle of the flow-blocking baffle (28). Both ends of the rotating shaft (29) are rotatably connected to the inner wall of the air intake pipe (2). One end of the rotating shaft (29) passes through the air intake pipe (2) and extends outward to be fixedly connected to a gear (30). A toothed plate (31) is meshed on one side of the gear (30). One side of the toothed plate (31) is fixedly connected to the bracket (15) through a vertical rod (32).

2. The non-methane hydrocarbon online monitoring exhaust gas pretreatment device according to claim 1, characterized in that, The oxygen supply assembly includes an oxygen supply pipe (34) located at the bottom of the inner side of the combustion chamber (4). Multiple overflow holes are equally spaced on one side of the oxygen supply pipe (34). An oxygen inlet pipe (35) is connected to one side of the oxygen supply pipe (34). The other end of the oxygen inlet pipe (35) passes through the combustion chamber (4) and extends outward to connect with the second induced draft fan (36).

3. The non-methane hydrocarbon online monitoring exhaust gas pretreatment device according to claim 1, characterized in that, The adsorption assembly includes an activated carbon adsorption plate (37) installed inside the box (1). The activated carbon adsorption plate (37) is S-shaped, and multiple crossbars (38) are fixed at equal distances on both sides of the inside of the box (1). The activated carbon adsorption plate (37) is placed on the crossbars (38).

4. The non-methane hydrocarbon online monitoring exhaust gas pretreatment device according to claim 1, characterized in that, The top of the processing box (18) is connected to a feed pipe (39), and the side wall of the processing box (18) is connected to a discharge pipe (40). Both the feed pipe (39) and the discharge pipe (40) are equipped with control valves.

5. The non-methane total hydrocarbon online monitoring waste gas pretreatment device according to claim 1, characterized in that, An observation window is provided on one side of the processing box (18), and a transparent glass (41) is fixedly installed on the observation window.

6. The non-methane total hydrocarbon online monitoring waste gas pretreatment device according to claim 1, characterized in that, A support plate (42) is provided below the combustion chamber (4), and one end of the support plate (42) is fixedly connected to the outer wall of the combustion chamber (4).

7. The non-methane total hydrocarbon online monitoring waste gas pretreatment device according to claim 1, characterized in that, The treatment liquid inside the treatment box (18) is lime water, and the front side of the box body (1) is equipped with a movable door.

Images