A harmful waste gas treatment system and treatment process thereof

Abstract

The present application provides a harmful waste gas treatment system and a treatment process thereof, and relates to the field of harmful waste gas treatment. It includes: combustion chamber one, combustion chamber two, precooler, washing tower, bag dust collector and main chimney, combustion chamber one is connected to combustion chamber two through an induced draft fan, the precooler is connected to combustion chamber two, the washing tower is connected to the precooler, the bag dust collector is connected to the washing tower, the bag dust collector is connected to the main chimney, combustion chamber one and combustion chamber two are both connected to a spare chimney, and a steel plate is provided on the top of the spare chimney, the outer sleeve of the spare chimney is provided with a support frame, and the support frame is supported on the ground, and an opening and closing assembly is provided between the steel plate and the spare chimney. The present application has the effect of not easily threatening the life and property safety of the staff.

Description

Technical Field

[0001] The present application relates to the field of harmful waste gas treatment, and in particular to a harmful waste gas treatment system and a treatment process thereof. Background Art

[0002] Waste gas refers to toxic and harmful gases discharged by humans in the process of production and life. In particular, chemical plants, steel plants, pharmaceutical plants, coking plants and refineries emit strong odors of waste gas, which seriously pollutes the environment and affects human health. The main pollutants contained in waste gas are dust, HCl, SO2, NOx, CO, HF, organic pollutants, dioxins and heavy metals.

[0003] As society continues to develop, there are various methods for treating waste gas, among which combustion is one of them. The focus of combustion is to remove dioxins, a harmful substance in waste gas.

[0004] However, during the combustion of the exhaust gas, the exhaust gas in the combustion chamber may be at risk of explosion due to excessive temperature or other factors, which may easily threaten the safety of life and property of the workers. Summary of the invention

[0005] In order to improve the problem of threatening the life and property safety of workers, the present application provides a harmful waste gas treatment system and a treatment process thereof.

[0006] In the first aspect, the present application provides a harmful waste gas treatment system, which adopts the following technical solution:

[0007] A harmful waste gas treatment system comprises: a combustion chamber 1, a combustion chamber 2, a precooler, a washing tower, a bag dust collector and a main chimney, wherein the combustion chamber 1 is connected to the combustion chamber 2 through an induced draft fan, the precooler is connected to the combustion chamber 2, the washing tower is connected to the precooler, the bag dust collector is connected to the washing tower, the bag dust collector is connected to the main chimney, the combustion chamber 1 and the combustion chamber 2 are both connected to a spare chimney, and a steel plate is provided on the top of the spare chimney, a support frame is provided on the outside of the spare chimney, and the support frame is supported on the ground, and an opening and closing component is provided between the steel plate and the spare chimney.

[0008] By adopting the above technical solution, once there is a risk of explosion due to factors such as excessive temperature of the exhaust gas in combustion chamber one and combustion chamber two, the exhaust gas that has not been completely treated can be directly discharged into the atmosphere through the spare chimney, thereby reducing the risk of explosion and enhancing the protection of the life and property safety of the staff.

[0009] Optionally, a pressure swing adsorption nitrogen production device is connected between the combustion chamber 1 and the induced draft fan.

[0010] By adopting the above technical solution, the pressure swing adsorption nitrogen production device can separate and extract nitrogen from the exhaust gas to reduce the nitrogen content in the exhaust gas, thereby reducing the explosion phenomenon when the exhaust gas is further processed under high temperature and high pressure environment.

[0011] Optionally, the opening and closing assembly includes: a cylinder, wherein the cylinder is fixed on the support frame, and a driving shaft of the cylinder is fixed to the steel plate.

[0012] By adopting the above technical solution, the cylinder is started to push the steel plate upward until the steel plate is separated from the spare chimney, thereby opening the spare chimney to quickly discharge the exhaust gas.

[0013] Optionally, the opening and closing assembly includes: multiple groups of suspension parts and multiple groups of driving parts, and the multiple groups of suspension parts correspond one-to-one to the multiple groups of driving parts, the suspension parts include: a fixed rod, a fixed pulley, a guide rod and a connecting rope, one end of the fixed rod is fixed to the spare chimney, and the other end is fixedly connected to the fixed pulley, one end of the connecting rope is fixed to the steel plate and wrapped around the fixed pulley, and the other end is connected to the driving part, a guide hole is opened on the spare chimney, one end of the guide rod is fixed to the steel plate, and the other end is arranged in the guide hole.

[0014] By adopting the above technical solution, the connecting rope is pulled downward to pull the steel plate upward until the steel plate is separated from the spare chimney, thereby opening the spare chimney for exhaust gas discharge. This method is not easily affected by too many uncontrollable factors, such as power outages, which may result in the inability to separate the steel plate from the spare chimney, or require workers to climb to the top of the spare chimney to separate the steel plate from the spare chimney.

[0015] Optionally, the driving part includes: a base, a winding rod, a rotating rod, an arcuate rack, a driving gear, a transmission gear and a rotating gear, the base is fixed on the ground, and a receiving groove is provided on the base, the winding rod is rotatably installed on the spare chimney, and the end of the connecting rope away from the steel plate is fixed to the winding rod, the rotating gear is coaxially sleeved on the winding rod, and the rotating rod is rotatably installed in the receiving groove, the driving gear and the transmission gear are coaxially sleeved on the rotating rod, and the transmission gear is meshed with the rotating gear, the arcuate rack passes through the receiving groove, and the arcuate rack is meshed with the driving gear, and adjacent arcuate racks are fixedly connected.

[0016] By adopting the above technical solution, the arc-shaped rack is pulled to drive the driving gear to rotate, and the rotation of the driving gear in turn drives the rotation of the rotating rod, the transmission gear, the rotating gear and the winding rod; the rotation of the winding rod will reel in the connecting rope, so that the connecting rope pulls the steel plate upward until the steel plate is separated from the spare chimney.

[0017] Optionally, the driving part also includes: a limit plate and multiple handles, the arc-shaped rack is provided with a limit groove, one end of the limit plate is fixed to the inner wall of the accommodating groove, and the other end is arranged in the limit groove, and the handle is fixed on the arc-shaped rack.

[0018] By adopting the above technical solution, the limiting plate can limit the arc-shaped rack, so that in the process of pulling the arc-shaped rack, the arc-shaped rack is not easy to deviate, and is not easy to separate from the driving gear, so as to ensure the rotation of the driving gear.

[0019] Optionally, a sealing assembly is arranged between the steel plate and the spare chimney, the sealing assembly comprises: a sealing part and a filling part, the sealing part comprises: an immersion block, a first baffle plate, a second baffle plate, a first sealing gasket and a second sealing gasket, the first baffle plate and the second baffle plate are both fixed to the steel plate, the first sealing gasket is fixed to the first baffle plate and pressed against the spare chimney, the second sealing gasket is fixed to the second baffle plate and pressed against the spare chimney, an oil storage tank is provided on the spare chimney, one end of the immersion block is fixed to the steel plate, and the other end is arranged in the oil storage tank, and the filling part is arranged on the spare chimney.

[0020] By adopting the above technical solution and using liquid mineral oil as the sealing medium, it is possible to prevent the exhaust gas from penetrating between the steel plate and the spare chimney, thereby making it more difficult for the exhaust gas to leak into the atmosphere, and the sealing stability is higher.

[0021] Optionally, the filling part includes: a floating plate, a blocking plate, a rubber sleeve, an adjusting rope and a reset spring, an oil storage cavity is arranged inside the spare chimney, and an oil inlet groove is arranged in communication between the oil storage cavity and the oil storage tank, a blocking groove is arranged on the inner wall of the oil inlet groove, the rubber sleeve is fixedly mounted on the blocking plate, one end of the blocking plate is arranged in the blocking groove, and the other end is arranged in the oil inlet groove, the reset spring is fixed between the blocking plate and the bottom of the blocking groove, the floating plate is arranged in the oil storage tank, one end of the adjusting rope is fixed to the top wall of the floating plate, and the other end passes through the blocking groove and is fixed to the blocking plate.

[0022] By adopting the above technical solution, when the mineral oil in the oil storage tank is reduced, the float plate will move downward. During this process, the float plate will pull the adjusting rope, and the adjusting rope will pull the blocking plate back into the blocking tank, so that the blocking plate opens to the oil inlet tank, and the mineral oil in the oil storage cavity is replenished into the oil storage tank.

[0023] Optionally, the filling part further includes: a slow-flow net, and the slow-flow net is fixed in the oil inlet groove.

[0024] By adopting the above technical solution, when the oil storage chamber replenishes oil into the oil storage tank, the slow flow net can block and buffer the mineral oil, so that the mineral oil can be slowly replenished into the oil storage tank instead of violently pouring in and flooding the oil storage tank.

[0025] In the second aspect, the present application provides a treatment process for a harmful waste gas treatment system, which adopts the following technical solution:

[0026] A treatment process of a harmful waste gas treatment system comprises the following steps:

[0027] S1: passing the exhaust gas into combustion chamber 1 for combustion;

[0028] S2: transporting the waste gas to a pressure swing adsorption device to reduce the nitrogen content in the waste gas;

[0029] S3: transporting the waste gas to combustion chamber 2 for open flame combustion, so as to mainly remove the dioxins mixed in the waste gas;

[0030] S4: After dioxins are removed to a certain extent, the waste gas is extracted three times a day, and the amount of waste gas extracted each time is rated. The content of dioxins in the waste gas of the three samplings is measured. If it is unqualified, continue to burn;

[0031] S5: If qualified, the exhaust gas is transported to the precooler to cool the exhaust gas;

[0032] S6: transporting the waste gas to a washing tower to wash and purify the waste gas;

[0033] S7: conveying the exhaust gas to a bag filter to remove dust from the exhaust gas;

[0034] S8: The exhaust gas is transported to the main chimney to discharge the exhaust gas.

[0035] By adopting the above technical solution, the waste gas can be effectively treated and then discharged into the atmosphere, thus not easily polluting the environment and not causing harm to the health of residents.

[0036] In summary, the present application includes at least one of the following beneficial effects:

[0037] 1. Once the exhaust gas in combustion chamber 1 and combustion chamber 2 exceeds the temperature limit and causes an explosion risk, the exhaust gas that has not been completely treated can be directly discharged into the atmosphere through the spare chimney, thereby reducing the risk of explosion and enhancing the protection of the life and property safety of the staff.

[0038] 2. The pressure swing adsorption nitrogen production device can separate and extract nitrogen from the exhaust gas to reduce the nitrogen content in the exhaust gas, thereby reducing the explosion phenomenon when the exhaust gas is further processed under high temperature and high pressure environment.

[0039] 3. Start the cylinder to push the steel plate upward until the steel plate is separated from the spare chimney, thereby opening the spare chimney to quickly discharge the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a structural schematic diagram according to Embodiment 1 of the present application;

[0041] Figure 2 is a structural schematic diagram according to Embodiment 2 of the present application;

[0042] Figure 3 is along Figure 2 A schematic cross-sectional view taken along the cutting line AA in FIG.

[0043] Figure 4 yes Figure 3 A schematic partial enlarged view of part B;

[0044] Figure 5 is a structural schematic diagram according to Embodiment 3 of the present application;

[0045] Figure 6 yes Figure 5 A schematic partial enlarged view of section C;

[0046] Figure 7 yes Figure 6 A schematic top view of

[0047] Figure 8 is along Figure 7 A schematic cross-sectional view taken along the cutting line DD in FIG.

[0048] Fig. 9 yes Figure 8 A schematic partial enlarged view of section E;

[0049] Fig.10 yes Figure 5 A schematic partial enlarged view of part F in the middle;

[0050] Fig.11 yes Figure 6 A schematic front view of

[0051] Fig.12 yes Fig.11 A schematic partial enlarged view of section G;

[0052] Fig.13 It is a structural diagram according to the fourth embodiment of the present application.

[0053] In the figure: 1. support frame; 10. combustion chamber 1; 11. pressure swing adsorption nitrogen generator; 12. combustion chamber 2; 13. precooler; 14. scrubber; 15. bag filter; 16. main chimney; 2. spare chimney; 21. steel plate; 22. oil storage tank; 23. oil storage cavity; 24. oil inlet tank; 25. blocking tank; 26. guide hole; 3. opening and closing assembly; 31. cylinder; 32. suspension part; 321. fixing rod; 322. fixed pulley; 323. guide rod; 324. connecting rope; 33. driving part; 331. base; 3311. accommodating groove; 332. winding rod; 333. rotating rod; 334. arc-shaped rack; 3341. limiting groove; 335. driving gear; 336. transmission gear; 337. rotating gear; 338. limiting plate; 339. handle; 4. sealing part; 41. immersion block; 42. first baffle plate; 43. second baffle plate; 44. first sealing gasket; 45. second sealing gasket; 5. filling part; 51. floating plate; 52. blocking plate; 53. rubber sleeve; 54. adjusting rope; 55. reset spring; 56. slow-flow net. DETAILED DESCRIPTION

[0054] Embodiments 1 to 4 of the present application respectively provide a harmful waste gas treatment system, and the present application will be described in detail below in conjunction with specific embodiments.

[0055] Embodiment 1:

[0056] See also Figure 1 A harmful waste gas treatment system generally may include: a combustion chamber 10, a combustion chamber 2 12, a precooler 13, a washing tower 14, a bag dust collector 15 and a main chimney 16. The combustion chamber 10 is connected to the combustion chamber 2 12 through an induced draft fan, the precooler 13 is connected to the combustion chamber 2 12 through a pipeline, the washing tower 14 is connected to the precooler 13 through a pipeline, the bag dust collector 15 is connected to the washing tower 14 through a pipeline, and the bag dust collector 15 is connected to the main chimney 16 through a pipeline. In the embodiment of the present application, valves are installed on the pipelines to control the opening or closing of the pipelines; in the embodiment of the present application, the combustion chamber 10 is generally carried out in a rotary kiln.

[0057] See also Figure 1 Furthermore, a pressure swing adsorption nitrogen making device 11 is connected between the combustion chamber 10 and the induced draft fan through a pipeline. The pressure swing adsorption nitrogen making device 11 can separate and extract nitrogen from the exhaust gas to reduce the nitrogen content in the exhaust gas, thereby reducing the explosion phenomenon when the exhaust gas is further treated under a high temperature and high pressure environment; in addition, as the proportion of oxygen content in the exhaust gas increases, subsequent operators can also selectively inject some new oxygen into the exhaust gas according to actual conditions. The advantage of this method is that it can make the exhaust gas easier to burn under high oxygen content.

[0058] When treating the waste gas, the waste gas is first input into the combustion chamber 10 for combustion to achieve the effect of removing harmful gases; after the combustion is completed, the waste gas is transported to the pressure swing adsorption nitrogen production device 11 to separate the nitrogen in the waste gas, thereby reducing the nitrogen content in the waste gas; after the nitrogen separation is completed, the waste gas is transported to the combustion chamber 2 12 by the induced draft fan for open flame combustion, so as to mainly remove dioxins, and the waste gas is extracted at a fixed time and point to detect whether the dioxin content in the waste gas is qualified;

[0059] If qualified, the waste gas is transported to the precooler 13 to cool the waste gas; after cooling, the waste gas is transported to the washing tower 14 for washing and purification; after washing, the waste gas is transported to the bag dust collector 15 to remove dust from the waste gas; finally, the waste gas is transported to the main chimney 16 for discharge.

[0060] See also Figure 1 Both combustion chamber 10 and combustion chamber 2 12 are connected to a spare chimney 2 through a pipeline. Once the exhaust gas in combustion chamber 10 and combustion chamber 2 12 exceeds the temperature limit and causes an explosion risk, then between environmental protection requirements and the safety of life and property, the only choice is to protect the safety of life and property without being environmentally friendly. At this time, the exhaust gas that has not been completely treated is directly discharged into the atmosphere through the spare chimney 2, thereby reducing the risk of explosion and enhancing the protection of the life and property safety of the staff.

[0061] See also Figure 1 Furthermore, a steel plate 21 is provided on the top cover of the spare chimney 2, and the steel plate 21 is used to seal the spare chimney 2, so that the spare chimney 2 can have a certain sealing property when not in use, and thus the untreated exhaust gas is not easy to leak out.

[0062] See also Figure 1 An opening and closing assembly 3 is provided between the steel plate 21 and the standby chimney 2. A support frame 1 is provided on the outside of the standby chimney 2. The support frame 1 is supported on the ground. In the embodiment of the present application, the support frame 1 has a ladder so that the staff can climb to the top of the standby chimney 2. The opening and closing assembly 3 includes: a cylinder 31. In the embodiment of the present application, four cylinders 31 are provided. The cylinders 31 are fixedly mounted on the top of the support frame 1. The cylinders 31 are vertically arranged, and the driving shafts of the cylinders 31 are fixed to the bottom wall of the steel plate 21. The four cylinders 31 are evenly distributed along the circumference of the steel plate 21. When the standby chimney 2 needs to be opened, the cylinders 31 are started to push the steel plate 21 upward until the steel plate 21 is separated from the standby chimney 2, thereby opening the standby chimney 2 to quickly discharge the exhaust gas.

[0063] The working principle of the first embodiment is as follows: when the spare chimney 2 needs to be opened, the cylinder 31 is started to push the steel plate 21 upward until the steel plate 21 is separated from the spare chimney 2, thereby opening the spare chimney 2 to quickly discharge the exhaust gas.

[0064] Embodiment 2:

[0065] Embodiment 2 is further optimized based on embodiment 1. Figure 2 and Figure 3 The difference between the second embodiment and the first embodiment is that a sealing component is provided between the steel plate 21 and the spare chimney 2, and the sealing component can improve the sealing between the steel plate 21 and the spare chimney 2, thereby making it more difficult for the exhaust gas to leak between the steel plate 21 and the spare chimney 2.

[0066] See also Figure 4 The sealing component includes: a sealing part 4 and a filling part 5.

[0067] See also Figure 4 The sealing part 4 includes: an immersion block 41, a first baffle plate 42, a second baffle plate 43, a first sealing gasket 44 and a second sealing gasket 45. The first baffle plate 42 and the second baffle plate 43 are both fixed on the bottom wall of the steel plate 21. In the embodiment of the present application, the first baffle plate 42 and the second baffle plate 43 are both annular, and the outer diameter of the first baffle plate 42 is greater than the outer diameter of the second baffle plate 43, and a gap is left between the first baffle plate 42 and the second baffle plate 43.

[0068] See also Figure 4 The first sealing gasket 44 is fixed on the bottom wall of the first baffle plate 42, and the first sealing gasket 44 is tightly pressed against the top wall of the spare chimney 2, and the first sealing gasket 44 can improve the sealing between the steel plate 21 and the spare chimney 2; the second sealing gasket 45 is fixed on the bottom wall of the second baffle plate 43, and the second sealing gasket 45 is pressed against the top wall of the spare chimney 2, and the second sealing gasket 45 can also improve the sealing between the steel plate 21 and the spare chimney 2, and the second sealing gasket 45 cooperates with the first sealing gasket 44 to provide double protection.

[0069] See also Figure 4 The top wall of the spare chimney 2 is provided with an annular oil storage tank 22, which is used to store mineral oil, and the oil storage tank 22 is located between the first baffle plate 43 and the second baffle plate 43. By utilizing the cooperation of the first baffle plate 42, the second baffle plate 43, the first sealing gasket 44 and the second sealing gasket 45, the oil storage tank 22 can be placed in a closed space so as not to be directly exposed to the outside, so that the mineral oil in the oil storage tank 22 is not easy to volatilize or evaporate too quickly.

[0070] See also Figure 4One end of the immersion block 41 is fixed to the bottom wall of the steel plate 21, and the other end is immersed in the oil storage tank 22. In the embodiment of the present application, the immersion block 41 is annular, and liquid mineral oil is used as a sealing medium, which can prevent the exhaust gas from easily passing through the steel plate 21 and the spare chimney 2, making it more difficult to leak into the atmosphere, and the sealing stability is relatively high.

[0071] See also Figure 4 The filling part 5 includes: a floating plate 51, a blocking plate 52, a rubber sleeve 53, an adjusting rope 54 and a reset spring 55. An oil storage chamber 23 is arranged inside the spare chimney 2, and the oil storage chamber 23 is annular. In the embodiment of the present application, an oil filling hole connected to the oil storage chamber 23 is opened on the top wall of the spare chimney 2, and the oil filling hole is convenient for injecting mineral oil into the oil storage chamber 23; a rubber plug is arranged in the oil filling hole.

[0072] See also Figure 4 The oil storage chamber 23 is connected to the oil storage tank 22 with an oil inlet groove 24, and the oil inlet groove 24 is annular. The inner top wall of the oil inlet groove 24 is provided with a blocking groove 25, and the blocking groove 25 is also annular. One end of the blocking plate 52 is arranged in the blocking groove 25, and the other end is arranged in the oil inlet groove 24. The blocking plate 52 is used to close the oil inlet groove 24, so that the mineral oil in the oil storage chamber 23 is not easy to flow into the oil storage tank 22. The rubber sleeve 53 is fixedly sleeved on the blocking plate 52, and the rubber sleeve 53 can improve the sealing between the blocking plate 52 and the inner walls of the oil inlet groove 24 and the blocking groove 25.

[0073] See also Figure 4 , one end of the return spring 55 is fixed to the top wall of the blocking plate 52, and the other end is fixed to the bottom of the blocking groove 25. In the embodiment of the present application, there are multiple return springs 55, which are evenly distributed along the circumference of the blocking plate 52. The return spring 55 is used to push the blocking plate 52 to be inserted into the oil inlet groove 24. The floating plate 51 is arranged in the oil storage tank 22. The floating plate 51 is annular and floats up and down in the vertical direction. In the embodiment of the present application, the gravity of the floating plate 51 is greater than the elastic force of the return spring 55. One end of the adjustment rope 54 is fixed to the top wall of the floating plate 51, and the other end passes through the blocking groove 25 and is fixed to the top wall of the blocking plate 52. In the embodiment of the present application, there can be multiple adjustment ropes 54, which are evenly distributed along the circumference of the floating plate 51.

[0074] If the mineral oil in the oil storage tank 22 is reduced due to long-term sealing, the floating plate 51 will move downward. During this process, the floating plate 51 pulls the adjusting rope 54, and the adjusting rope 54 will pull the blocking plate 52 back into the blocking groove 25, so that the blocking plate 52 opens the oil inlet groove 24, so that the mineral oil in the oil storage cavity 23 is replenished into the oil storage tank 22, so that the mineral oil in the oil storage tank 22 is always kept sufficient, thereby ensuring the sealing between the steel plate 21 and the spare chimney 2; after the replenishment is completed, the floating plate 51 floats to the initial position, and the reset spring 55 pushes the blocking plate 52 to insert into the oil inlet groove 24 to complete the closure of the oil inlet groove 24.

[0075] See also Figure 4 Furthermore, the filling part 5 also includes: a slow-flow net 56, which is annular in shape. The slow-flow net 56 is fixed in the oil inlet groove 24 and is located on the side of the blocking plate 52 close to the oil storage chamber 23. When the oil storage chamber 23 replenishes oil into the oil storage tank 22, the slow-flow net 56 can block and buffer the mineral oil, so that the mineral oil can be slowly replenished into the oil storage tank 22 instead of violently pouring in and flooding the oil storage tank 22.

[0076] The working principle of the second embodiment is as follows: using liquid mineral oil as a sealing medium can prevent the exhaust gas from easily passing through between the steel plate 21 and the spare chimney 2, thereby making it more difficult to leak into the atmosphere, and the sealing stability is higher.

[0077] Embodiment three:

[0078] Embodiment 3 is further optimized based on embodiment 1. Figure 5 , Figure 6 and Figure 7 The difference between the third embodiment and the first embodiment is that the opening and closing assembly 3 includes: multiple groups of suspension parts 32 and multiple groups of driving parts 33. In the embodiment of the present application, the suspension parts 32 and the driving parts 33 are both set to three groups, and the suspension parts 32 and the driving parts 33 correspond one to one.

[0079] See also Figure 6The suspension part 32 includes: a fixed rod 321, a fixed pulley 322, a guide rod 323 and a connecting rope 324. The fixed rod 321 is fixed to the outer wall of the spare chimney 2, and the end of the fixed rod 321 away from the spare chimney 2 is inclined upward. In the embodiment of the present application, three fixed rods 321 are evenly distributed along the circumference of the spare chimney 2; the fixed pulley 322 is fixedly installed on the end of the fixed rod 321 away from the spare chimney 2. One end of the connecting rope 324 is fixed to the top wall of the steel plate 21 and is wound around the set pulley 322, and the other end is connected to the driving part 33. In the embodiment of the present application, the end of the connecting rope 324 away from the steel plate 21 extends to the bottom of the spare chimney 2. When the spare chimney 2 needs to be opened, the connecting rope 324 is pulled downward to pull the steel plate 21 upward until the steel plate 21 is separated from the spare chimney 2, thereby opening the spare chimney 2 for exhaust gas discharge. This method is not easily affected by too many uncontrollable factors, such as power outages, which may make it impossible to separate the steel plate 21 from the spare chimney 2, or require staff to climb to the top of the spare chimney 2 to separate the steel plate 21 from the spare.

[0080] See also Figure 7 , Figure 8 and Fig. 9 In addition, a guide hole 26 is opened on the top wall of the spare chimney 2, one end of the guide rod 323 is fixed to the bottom wall of the steel plate 21, and the other end is arranged in the guide hole 26. The guide rod 323 can play a guiding and limiting role on the steel plate 21, so that the steel plate 21 can stably move upward in the vertical direction; and when the steel plate 21 is used to cover the spare chimney 2, it can stably move downward in the vertical direction, thereby accurately covering the spare chimney 2.

[0081] See also Fig.10 The driving part 33 includes: a base 331, a reeling rod 332, a rotating rod 333, an arc-shaped rack 334, a driving gear 335, a transmission gear 336 and a rotating gear 337. The base 331 is fixed on the ground, and the three bases 331 are evenly distributed along the circumference of the spare chimney 2, that is, one-to-one corresponding to the connecting rope 324; and the side wall of the base 331 is penetrated with a receiving groove 3311. The reeling rod 332 is rotatably installed on the outer wall of the spare chimney 2, and the reeling rod 332 is horizontally arranged. The end of the connecting rope 324 away from the steel plate 21 is fixed to the reeling rod 332, and the reeling rod 332 is used to reel the connecting rope 324.

[0082] See also Fig.10The rotating rod 333 is rotatably mounted on the inner top wall of the receiving groove 3311 and is vertically arranged. The driving gear 335 and the transmission gear 336 are both coaxially sleeved on the rotating rod 333, and the driving gear 335 is located below the transmission gear 336. The rotating gear 337 is coaxially sleeved on the winding rod 332, and the transmission gear 336 is meshed with the rotating gear 337. The arc-shaped rack 334 passes through the receiving groove 3311, and the arc-shaped rack 334 is meshed with the driving gear 335. When it is necessary to separate the steel plate 21 from the spare chimney 2, the arc-shaped rack 334 is pulled to drive the driving gear 335 to rotate. The rotation of the driving gear 335 drives the rotation of the rotating rod 333, the transmission gear 336, the rotating gear 337 and the winding rod 332 in turn;

[0083] The rotation of the reeling rod 332 will reel in the connecting rope 324 so that the connecting rope 324 pulls the steel plate 21 upward until the steel plate 21 is separated from the spare chimney 2. The arc-shaped rack 334 and the base 331 can be fixed by bolts to complete the separation of the steel plate 21 and the spare chimney 2.

[0084] Furthermore, in the embodiment of the present application, the three arc-shaped racks 334 are interconnected so that the three arc-shaped racks 334 form a circle, namely the so-called "inner gear", so that there is no need for three workers to pull the three arc-shaped racks 334 at the same time, and only one worker is needed to complete the operation.

[0085] See also Fig.11 and Fig.12 Furthermore, the driving part 33 also includes: a limiting plate 338 and a handle 339. The bottom wall of the arc-shaped rack 334 is provided with a limiting groove 3341 along the length direction of the arc-shaped rack 334. One end of the limiting plate 338 is fixed to the inner bottom wall of the accommodating groove 3311, and the other end is arranged in the limiting groove 3341. The limiting plate 338 can limit the arc-shaped rack 334, so that in the process of pulling the arc-shaped rack 334, the arc-shaped rack 334 is not easy to deviate, and thus is not easy to separate from the driving gear 335, so as to ensure that the driving gear 335 is driven to rotate.

[0086] See also Fig.10 The handle 339 is fixed on the top wall of the arc-shaped rack 334 , and the handle 339 is convenient for the staff to pull the arc-shaped rack 334 .

[0087] The working principle of embodiment three is as follows: when it is necessary to separate the steel plate 21 from the spare chimney 2, pull the arc-shaped rack 334 to drive the driving gear 335 to rotate, and the rotation of the driving gear 335 will drive the rotation of the rotating rod 333, the transmission gear 336, the rotating gear 337 and the winding rod 332 in turn; the rotation of the winding rod 332 will reel in the connecting rope 324, so that the connecting rope 324 pulls the steel plate 21 upward until the steel plate 21 is separated from the spare chimney 2, and the arc-shaped rack 334 can be fixed to the base 331 by bolts, thereby completing the separation of the steel plate 21 from the spare chimney 2.

[0088] Embodiment 4:

[0089] Embodiment 4 is further optimized on the basis of embodiment 3. Fig.13 The difference between the fourth embodiment and the third embodiment is that a sealing component is provided between the steel plate 21 and the spare chimney 2, and the sealing component can improve the sealing between the steel plate 21 and the spare chimney 2, thereby making it more difficult for the exhaust gas to leak from between the steel plate 21 and the spare chimney 2.

[0090] The sealing assembly in the fourth embodiment has the same structure as the sealing assembly in the second embodiment. For details, see Figure 4 The sealing component includes: a sealing part 4 and a filling part 5.

[0091] See also Figure 4 The sealing part 4 includes: an immersion block 41, a first baffle plate 42, a second baffle plate 43, a first sealing gasket 44 and a second sealing gasket 45. The first baffle plate 42 and the second baffle plate 43 are both fixed on the bottom wall of the steel plate 21. In the embodiment of the present application, the first baffle plate 42 and the second baffle plate 43 are both annular, and the outer diameter of the first baffle plate 42 is greater than the outer diameter of the second baffle plate 43, and a gap is left between the first baffle plate 42 and the second baffle plate 43.

[0092] See also Figure 4 The first sealing gasket 44 is fixed on the bottom wall of the first baffle plate 42, and the first sealing gasket 44 is tightly pressed against the top wall of the spare chimney 2, and the first sealing gasket 44 can improve the sealing between the steel plate 21 and the spare chimney 2; the second sealing gasket 45 is fixed on the bottom wall of the second baffle plate 43, and the second sealing gasket 45 is pressed against the top wall of the spare chimney 2, and the second sealing gasket 45 can also improve the sealing between the steel plate 21 and the spare chimney 2, and the second sealing gasket 45 cooperates with the first sealing gasket 44 to provide double protection.

[0093] See also Figure 4The top wall of the spare chimney 2 is provided with an annular oil storage tank 22, which is used to store mineral oil, and the oil storage tank 22 is located between the first baffle plate 43 and the second baffle plate 43. By utilizing the cooperation of the first baffle plate 42, the second baffle plate 43, the first sealing gasket 44 and the second sealing gasket 45, the oil storage tank 22 can be placed in a closed space so as not to be directly exposed to the outside, so that the mineral oil in the oil storage tank 22 is not easy to volatilize or evaporate too quickly.

[0094] See also Figure 4 One end of the immersion block 41 is fixed to the bottom wall of the steel plate 21, and the other end is immersed in the oil storage tank 22. In the embodiment of the present application, the immersion block 41 is annular, and liquid mineral oil is used as a sealing medium, which can prevent the exhaust gas from easily passing through the steel plate 21 and the spare chimney 2, making it more difficult to leak into the atmosphere, and the sealing stability is relatively high.

[0095] See also Figure 4 The filling part 5 includes: a floating plate 51, a blocking plate 52, a rubber sleeve 53, an adjusting rope 54 and a reset spring 55. An oil storage chamber 23 is arranged inside the spare chimney 2, and the oil storage chamber 23 is annular. In the embodiment of the present application, an oil filling hole connected to the oil storage chamber 23 is opened on the top wall of the spare chimney 2, and the oil filling hole is convenient for injecting mineral oil into the oil storage chamber 23; a rubber plug is arranged in the oil filling hole.

[0096] See also Figure 4 The oil storage chamber 23 is connected to the oil storage tank 22 with an oil inlet groove 24, and the oil inlet groove 24 is annular. The inner top wall of the oil inlet groove 24 is provided with a blocking groove 25, and the blocking groove 25 is also annular. One end of the blocking plate 52 is arranged in the blocking groove 25, and the other end is arranged in the oil inlet groove 24. The blocking plate 52 is used to close the oil inlet groove 24, so that the mineral oil in the oil storage chamber 23 is not easy to flow into the oil storage tank 22. The rubber sleeve 53 is fixedly sleeved on the blocking plate 52, and the rubber sleeve 53 can improve the sealing between the blocking plate 52 and the inner walls of the oil inlet groove 24 and the blocking groove 25.

[0097] See also Figure 4 , one end of the return spring 55 is fixed to the top wall of the blocking plate 52, and the other end is fixed to the bottom of the blocking groove 25. In the embodiment of the present application, there are multiple return springs 55, which are evenly distributed along the circumference of the blocking plate 52. The return spring 55 is used to push the blocking plate 52 to be inserted into the oil inlet groove 24. The floating plate 51 is arranged in the oil storage tank 22. The floating plate 51 is annular and floats up and down in the vertical direction. In the embodiment of the present application, the gravity of the floating plate 51 is greater than the elastic force of the return spring 55. One end of the adjustment rope 54 is fixed to the top wall of the floating plate 51, and the other end passes through the blocking groove 25 and is fixed to the top wall of the blocking plate 52. In the embodiment of the present application, there can be multiple adjustment ropes 54, which are evenly distributed along the circumference of the floating plate 51.

[0098] If the mineral oil in the oil storage tank 22 is reduced due to long-term sealing, the floating plate 51 will move downward. During this process, the floating plate 51 pulls the adjusting rope 54, and the adjusting rope 54 will pull the blocking plate 52 back into the blocking groove 25, so that the blocking plate 52 opens the oil inlet groove 24, so that the mineral oil in the oil storage cavity 23 is replenished into the oil storage tank 22, so that the mineral oil in the oil storage tank 22 is always kept sufficient, thereby ensuring the sealing between the steel plate 21 and the spare chimney 2; after the replenishment is completed, the floating plate 51 floats to the initial position, and the reset spring 55 pushes the blocking plate 52 to insert into the oil inlet groove 24 to complete the closure of the oil inlet groove 24.

[0099] See also Figure 4 Furthermore, the filling part 5 also includes: a slow-flow net 56, which is annular in shape. The slow-flow net 56 is fixed in the oil inlet groove 24 and is located on the side of the blocking plate 52 close to the oil storage chamber 23. When the oil storage chamber 23 replenishes oil into the oil storage tank 22, the slow-flow net 56 can block and buffer the mineral oil, so that the mineral oil can be slowly replenished into the oil storage tank 22 instead of violently pouring in and flooding the oil storage tank 22.

[0100] The working principle of the fourth embodiment is as follows: using liquid mineral oil as a sealing medium can prevent the exhaust gas from easily passing through between the steel plate 21 and the spare chimney 2, thereby making it more difficult to leak into the atmosphere, and the sealing stability is higher.

[0101] Embodiment 5 of the present application also provides a treatment process for a harmful waste gas treatment system, which can be implemented using any one of the harmful waste gas treatment systems in Embodiments 1 to 4.

[0102] A treatment process of a harmful waste gas treatment system comprises the following steps:

[0103] S1: passing the exhaust gas into a combustion chamber 10 for combustion;

[0104] S2: transporting the exhaust gas to the pressure swing adsorption nitrogen production device 11 to reduce the nitrogen content in the exhaust gas;

[0105] S3: transporting the waste gas to the second combustion chamber 12 for open flame combustion, so as to mainly remove the dioxins mixed in the waste gas;

[0106] S4: After dioxins are removed to a certain extent, the waste gas is extracted three times a day, and the amount of waste gas extracted each time is rated. The content of dioxins in the waste gas of the three samplings is measured. If it is unqualified, continue to burn;

[0107] S5: If qualified, the exhaust gas is transported to the precooler 13 to cool the exhaust gas;

[0108] S6: transporting the waste gas to the washing tower 14 to wash and purify the waste gas;

[0109] S7: transporting the exhaust gas to the bag filter 15 to remove dust from the exhaust gas;

[0110] S8: The exhaust gas is transported to the main chimney 16 to discharge the exhaust gas.

[0111] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A harmful waste gas treatment system, characterized in that: include: Combustion chamber one (10), combustion chamber two (12), a precooler (13), a washing tower (14), a bag dust collector (15) and a main chimney (16), wherein the combustion chamber one (10) is connected to the combustion chamber two (12) through an induced draft fan, the precooler (13) is connected to the combustion chamber two (12), the washing tower (14) is connected to the precooler (13), the bag dust collector (15) is connected to the washing tower (14), the bag dust collector (15) is connected to the main chimney (16), the combustion chamber one (10) and the combustion chamber two (12) are both connected to a spare chimney (2), and a steel plate (21) is provided on the top of the spare chimney (2), a support frame (1) is provided on the outside of the spare chimney (2), and the support frame (1) is supported on the ground, and an opening and closing component (3) is provided between the steel plate (21) and the spare chimney (2); The opening and closing assembly (3) comprises: a plurality of groups of suspension parts (32) and a plurality of groups of driving parts (33), and the plurality of groups of suspension parts (32) correspond to the plurality of groups of driving parts (33) in a one-to-one manner. The suspension part (32) comprises: a fixing rod (321), a fixed pulley (322), a guide rod (323) and a connecting rope (324). One end of the fixing rod (321) is fixed to the spare chimney (2), and the other end is fixedly connected to the fixed pulley (322). One end of the connecting rope (324) is fixed to the steel plate (21) and wound around the fixed pulley (322), and the other end is connected to the driving part (33). A guide hole (26) is provided on the spare chimney (2). One end of the guide rod (323) is fixed to the steel plate (21), and the other end is arranged in the guide hole (26). The driving part (33) comprises: a base (331), a reeling rod (332), a rotating rod (333), an arc-shaped rack (334), a driving gear (335), a transmission gear (336) and a rotating gear (337); the base (331) is fixed on the ground, and a receiving groove (3311) is provided on the base (331); the reeling rod (332) is rotatably mounted on the spare chimney (2); and one end of the connecting rope (324) away from the steel plate (21) is fixed to the reeling rod (332); the rotating gear (337) is connected to the driving gear (335), and the transmission gear (336) is connected to the rotating gear (337); (337) is coaxially sleeved on the reeling rod (332), the rotating rod (333) is rotatably installed in the accommodating groove (3311), the driving gear (335) and the transmission gear (336) are coaxially sleeved on the rotating rod (333), and the transmission gear (336) is meshed with the rotating gear (337), the arc-shaped rack (334) passes through the accommodating groove (3311), and the arc-shaped rack (334) is meshed with the driving gear (335), and adjacent arc-shaped racks (334) are fixedly connected; The driving part (33) further comprises: a limiting plate (338) and a plurality of handles (339); a limiting groove (3341) is provided on the arc-shaped rack (334); one end of the limiting plate (338) is fixed to the inner wall of the accommodating groove (3311), and the other end is arranged in the limiting groove (3341); and the handle (339) is fixed on the arc-shaped rack (334); A sealing assembly is arranged between the steel plate (21) and the standby chimney (2), the sealing assembly comprising: a sealing part (4) and a filling part (5), the sealing part (4) comprising: an immersion block (41), a first baffle plate (42), a second baffle plate (43), a first sealing gasket (44) and a second sealing gasket (45), the first baffle plate (42) and the second baffle plate (43) are both fixed to the steel plate (21), the first sealing gasket (44) is fixed to the first baffle plate (42) and is tightly against the standby chimney (2), the second sealing gasket (45) is fixed to the second baffle plate (43) and is tightly against the standby chimney (2), an oil storage tank (22) is provided on the standby chimney (2), one end of the immersion block (41) is fixed to the steel plate (21), and the other end is arranged in the oil storage tank (22), and the filling part (5) is arranged on the standby chimney (2); The filling part (5) comprises: a floating plate (51), a blocking plate (52), a rubber sleeve (53), an adjusting rope (54) and a reset spring (55); an oil storage chamber (23) is arranged inside the standby chimney (2); an oil inlet groove (24) is arranged between the oil storage chamber (23) and the oil storage groove (22); a blocking groove (25) is arranged on the inner wall of the oil inlet groove (24); the rubber sleeve (53) is fixedly sleeved on the blocking plate (52); One end of the blocking plate (52) is arranged in the blocking groove (25), and the other end is arranged in the oil inlet groove (24); the return spring (55) is fixed between the blocking plate (52) and the bottom of the hole of the blocking groove (25); the floating plate (51) is arranged in the oil storage groove (22); one end of the adjustment rope (54) is fixed to the top wall of the floating plate (51), and the other end passes through the blocking groove (25) and is fixed to the blocking plate (52); The filling portion (5) further comprises a slow-flow net (56), wherein the slow-flow net (56) is fixed in the oil inlet groove (24).

2. The harmful waste gas treatment system according to claim 1, characterized in that: A pressure swing adsorption nitrogen production device (11) is connected between the combustion chamber 1 (10) and the induced draft fan.

3. The treatment process of the harmful waste gas treatment system according to claim 2 is characterized in that: The following steps are involved: S1: passing the exhaust gas into a combustion chamber 1 (10) for combustion; S2: transporting the waste gas to a pressure swing adsorption device (11) to reduce the nitrogen content in the waste gas; S3: transporting the waste gas to combustion chamber 2 (12) for open flame combustion to mainly remove dioxins mixed in the waste gas; S4: After dioxins are removed to a certain extent, the waste gas is extracted three times a day, and the amount of waste gas extracted each time is rated. The content of dioxins in the waste gas of the three samplings is measured. If it is unqualified, continue to burn; S5: If qualified, the waste gas is transported to the precooler (13) to cool the waste gas; S6: transporting the waste gas to a washing tower (14) to wash and purify the waste gas; S7: conveying the exhaust gas to a bag filter (15) to remove dust from the exhaust gas; S8: The exhaust gas is transported to the main chimney (16) to discharge the exhaust gas.

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