An exhaust gas cooling device at the outlet of an RTO regenerative thermal oxidizer

Abstract

The present invention discloses an exhaust gas cooling device at the outlet of an RTO regenerative thermal oxidizer, which includes a spray cooling structure. The spray cooling structure includes a spray cooling outer shell, and two maintenance holes are provided on the front surface of the spray cooling outer shell; through the air duct extension mechanism, not only can the flow path of the cooling absorption liquid be further extended, but also the flow path of the exhaust gas can be extended, so that the exhaust gas and the cooling absorption liquid travel a longer distance under the condition of sufficient contact, which helps to further increase the contact time between the exhaust gas and the cooling absorption liquid, and the effect of the cooling absorption liquid on cooling the exhaust gas and absorbing the inorganic compounds inside is more significant. Through the adjustment mechanism, the distance between the liquid duct extension mechanism and the flow splitting mechanism and the beam collecting mechanism can be adjusted to increase the liquid column height, so that the speed of spraying the cooling absorption liquid inside the air duct extension mechanism is faster, which helps to increase the applicability and improves the practicability of the exhaust gas cooling device at the outlet of the RTO regenerative thermal oxidizer.

Description

Technical Field

[0001] The present invention relates to the field of waste gas cooling equipment, and more specifically, to an exhaust gas cooling device for the outlet of an RTO regenerative thermal oxidizer furnace. Background Art

[0002] An RTO regenerative thermal oxidizer furnace is a regenerative thermal oxidizer, also known as a regenerative incinerator. Its basic principle is to oxidize organic waste gas at high temperature to generate CO2 and H2O, thereby purifying the waste gas and recovering the heat released during decomposition, so as to achieve the dual purposes of environmental protection and energy conservation. It is an energy-saving environmental protection device for treating medium- and high-concentration volatile organic waste gas. The temperature of the exhaust gas at the outlet of the RTO regenerative thermal oxidizer furnace is generally as high as 80 - 100°C. If the waste gas is directly introduced into the caustic scrubber, it is easy to damage the packing. Therefore, an exhaust gas cooling device for the outlet of the RTO regenerative thermal oxidizer furnace is needed to cool down the waste gas, quickly reduce the waste gas temperature to 40 - 50°C, and at the same time, the exhaust gas cooling device for the outlet of the RTO regenerative thermal oxidizer furnace can absorb inorganic compounds such as hydrochloric acid, reducing environmental pollution.

[0003] The existing exhaust gas cooling device for the outlet of the RTO regenerative thermal oxidizer furnace mainly consists of a cooling outer shell, a demister, a spraying system, an inlet and outlet gas pipe, a liquid discharge pipe, etc. When in use, the waste gas enters the cooling outer shell from the inlet pipe and flows upward. Then, the spraying system sprays the cooling absorption liquid into the cooling outer shell. Next, the sprayed absorption liquid contacts the waste gas. After that, the cooling absorption liquid cools down the waste gas and at the same time absorbs inorganic compounds such as hydrochloric acid in the waste gas. Then, the waste gas after temperature reduction treatment passes through the demister to remove mist and is discharged into the caustic scrubber for treatment through the outlet pipe. However, the travel distance of the cooling absorption liquid is short, resulting in a short contact time between the waste gas and the cooling absorption liquid, poor cooling effect, and also very poor effect of absorbing inorganic compounds such as hydrochloric acid. Therefore, there is an urgent need to design an exhaust gas cooling device for the outlet of the RTO regenerative thermal oxidizer furnace. Summary of the Invention

[0004] 1. Technical Problems to be Solved

[0005] In view of the problems existing in the prior art, the existing waste gas cooling device at the outlet of the RTO regenerative thermal oxidizer mainly consists of a cooling outer shell, a demister, a spraying system, an air inlet and outlet pipe, a liquid discharge pipe, etc. When in use, the waste gas enters the cooling outer shell from the inlet pipe and flows upward. Then, the spraying system sprays a cooling absorption liquid into the cooling outer shell. Next, the sprayed absorption liquid contacts the waste gas. After that, the cooling absorption liquid cools the waste gas and simultaneously absorbs inorganic compounds such as hydrochloric acid in the waste gas. Then, the waste gas after temperature reduction treatment passes through the demister and is discharged into an alkali scrubber through the outlet pipe for treatment. However, the travel distance of the cooling absorption liquid is short, resulting in a short contact time between the waste gas and the cooling absorption liquid, poor cooling effect, and very poor effect of absorbing inorganic compounds such as hydrochloric acid. The purpose of the present invention is to provide a waste gas cooling device at the outlet of an RTO regenerative thermal oxidizer, which can well solve the problems raised in the background art.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A waste gas cooling device at the outlet of an RTO regenerative thermal oxidizer includes a spray cooling structure. The spray cooling structure includes a spray cooling outer shell. There are two maintenance holes on the front surface of the spray cooling outer shell. A wireless controller is fixedly installed on the front surface of the spray cooling outer shell and is located between the two maintenance holes. The top end of the spray cooling outer shell is fixedly communicated with a waste gas discharge pipe. The right side surface of the spray cooling outer shell is fixedly communicated with a waste gas injection pipe located at its bottom end. The left side surface of the spray cooling outer shell is fixedly communicated with a liquid discharge pipe located at its bottom end. A liquid level control valve is provided on the pipeline of the liquid discharge pipe and is located inside the spray cooling outer shell. The liquid level control valve is fixedly connected to the left side surface of the inner cavity of the spray cooling outer shell. The inside of the spray cooling outer shell is filled with a storage solution. The liquid level control valve is immersed in the storage solution. An inner wall of the spray cooling outer shell is fixedly connected with a demister located at its top. A spray pipe is fixedly inserted on the right side surface of the spray cooling outer shell and is located below the demister. The right end of the spray pipe is communicated with a water pump. The water pump is electrically connected to the wireless controller. The left end of the spray pipe extends into the inside of the spray cooling outer shell and is fixedly connected to the left side surface of the inner cavity of the spray cooling outer shell. A spray head is fixedly communicated with the surface of the spray pipe and is located at its bottom.

[0009] Preferably, it further includes a flow splitting mechanism. The flow splitting mechanism includes an inverted conical shell. The inverted conical shell is fixedly connected to the inner wall of the spray cooling outer shell and is located below the spray head. A fixed through hole is opened at the bottom end of the inverted conical shell. A buffer conical cavity is opened inside the inverted conical shell. A jet one-way valve communicated with the buffer conical cavity is fixedly inserted on the top surface of the inverted conical shell. An air delivery branch pipe is fixedly connected to the inner wall of the fixed through hole. The air delivery branch pipe is communicated with the buffer conical cavity. The other end of the air delivery branch pipe is fixedly communicated with an air collecting cylinder.

[0010] Preferably, a bunching mechanism is further included. The bunching mechanism includes a bunching reducing pipe fixedly connected to the inner wall of the spray cooling housing and located below the inverted conical housing. Fixed support rods are fixedly connected to the inner wall of the bunching reducing pipe, and the other ends of the fixed support rods are fixedly connected to a bunching pipe. The bunching pipe penetrates the bunching reducing pipe, and the top end of the bunching pipe extends to the outside of the bunching reducing pipe.

[0011] Preferably, a telescopic adapter is further included. The telescopic adapter includes two upper short pipes. One upper short pipe is fixedly connected to the bottom surface of the inverted conical housing, and the other upper short pipe is fixedly connected to the bottom surface of the bunching reducing pipe. A liquid level gauge is installed on the inner wall of the upper short pipe. A liquid level gauge is fixedly installed on the inner wall of the spray cooling housing between the spray head and the inverted conical housing. The liquid level gauges are electrically connected to the wireless controller. The bottom end of the upper short pipe is fixedly communicated with an outer sleeve bellows. The bottom end of the outer sleeve bellows is fixedly communicated with a lower short pipe. The bottom end of the lower short pipe is fixedly communicated with a reducing sleeve.

[0012] Preferably, a liquid channel extension mechanism is further included. The liquid channel extension mechanism includes an upper conical cover. The top end of the upper conical cover is fixedly communicated with the bottom end of the reducing sleeve. A side sealing ring is fixedly connected to the inner wall of the upper conical cover at its edge. The bottom end of the side sealing ring is fixedly connected to a lower conical cover. The lower conical cover is movably inserted into the upper conical cover. A first spiral convex plate is fixedly sleeved on the outer surface of the lower conical cover. The top surface of the first spiral convex plate is fixedly connected to the inner wall of the upper conical cover. An extended spiral flow channel is formed between the inner wall of the upper conical cover, the outer surface of the lower conical cover, and the surface of the first spiral convex plate. A vent pipe is fixedly inserted through the middle of the lower conical cover. The top end of the vent pipe penetrates the reducing sleeve and extends into the outer sleeve bellows. The top end of the vent pipe is fixedly communicated with a vent bellows. The vent bellows is movably inserted into the outer sleeve bellows. The number of the vent bellows is two. The top end of one vent bellows is fixedly communicated with the bottom end of the air collecting cylinder, and the top end of the other vent bellows is fixedly communicated with the bottom end of the bunching pipe.

[0013] Preferably, an air channel extension mechanism is further included. The air channel extension mechanism includes a liquid permeation hole and a second spiral convex plate. The liquid permeation hole is opened on the lower conical cover and located inside the extended spiral flow channel. A liquid permeation cotton column is movably inserted into the liquid permeation hole. The top end of the liquid permeation cotton column is fixedly connected to a liquid permeation cotton disc. The liquid permeation cotton disc is in contact connection with the outer surface of the lower conical cover. The second spiral convex plate is fixedly connected to the inner wall of the lower conical cover. The bottom end of the second spiral convex plate is fixedly connected to a closed conical shell. An extended spiral air channel is formed between the outer surface of the closed conical shell, the surface of the second spiral convex plate, and the inner surface of the lower conical cover. The extended spiral air channel is adapted to the extended spiral flow channel. The liquid permeation cotton column is located inside the extended spiral air channel.

[0014] Preferably, it further includes an adjusting mechanism. The adjusting mechanism includes adjusting boxes, and the number of adjusting boxes is two. The two adjusting boxes are respectively fixedly connected to the left and right side surfaces of the spray cooling housing. A servo double-shaft motor is provided inside the adjusting box. The servo double-shaft motor is electrically connected to the wireless controller. The servo double-shaft motor is bolted to the surface of the spray cooling housing. A regulating rod is fixedly connected to the end of the output shaft of the servo double-shaft motor. An adjusting wire wheel is fixedly sleeved outside the regulating rod at its end. An adjusting wire is fixedly connected to the outside of the adjusting wire wheel. The adjusting wire is wound around the outside of the adjusting wire wheel. The other end of the adjusting wire extends into the spray cooling housing and is movably sleeved with a bearing wheel. The number of bearing wheels is four. Two bearing wheels are fixedly installed on the bottom surface of the inverted conical housing. The other two bearing wheels are fixedly connected to the bottom surface of the converging and tapering pipe. The end of the adjusting wire is fixedly connected to the surface of the upper conical cover. An end fixing plate is movably sleeved on the end of the regulating rod. The right end of the end fixing plate is fixedly connected to the inner wall of the adjusting box. The other end of the end fixing plate is fixedly connected to the surface of the spray cooling housing.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] Through the spray cooling structure, the waste gas can be washed, which can not only reduce the temperature of the waste gas, but also absorb inorganic compounds in the waste gas. Through the flow splitting mechanism, the waste gas can be divided into many upward air flow columns, which can promote the full contact between the waste gas and the cooling absorption liquid, help to increase the washing effect, accelerate the cooling speed, and accelerate the absorption speed of inorganic compounds in the waste gas. At the same time, the flow splitting mechanism and the beam collecting mechanism can collect the cooling absorption liquid and guide it, so that the cooling absorption liquid enters the telescopic adapter, and the cooling absorption liquid is injected into the liquid channel extension mechanism through the telescopic adapter. Through the liquid channel extension mechanism, the flow path of the cooling absorption liquid can be extended, which helps to increase the contact time between the waste gas and the cooling absorption liquid. Through the air channel extension mechanism, not only can the flow path of the cooling absorption liquid be further extended, but also the flow path of the waste gas can be extended, so that the waste gas and the cooling absorption liquid travel a longer distance under the condition of full contact, which helps to further increase the contact time between the waste gas and the cooling absorption liquid. The effect of the cooling absorption liquid on cooling the waste gas and absorbing inorganic compounds inside it is more significant. Through the adjusting mechanism, the distance between the liquid channel extension mechanism and the flow splitting mechanism and the beam collecting mechanism can be adjusted to increase the liquid column height, so that the spraying speed of the cooling absorption liquid inside the air channel extension mechanism is faster, which helps to increase the applicability and improve the practicability of the waste gas cooling device at the outlet of the RTO regenerative thermal oxidizer. Description of the drawings

[0018] Figure 1 It is a schematic structural diagram of the present invention;

[0019] Figure 2 Internal structure diagram of the present invention Figure 1 ;

[0020] Figure 3 Internal structure diagram of the present invention Figure 2 ;

[0021] Figure 4 Internal structure diagram of the flow splitting mechanism in the present invention Figure 3 ;

[0022] Figure 5 Internal structure diagram of the beam collecting mechanism in the present invention Figure 2 ;

[0023] Figure 6 Internal structure diagram of the present invention Figure 5 ;

[0024] Figure 7 Internal structure diagram of the liquid channel extension mechanism in the present invention Figure 6 ;

[0025] Figure 8 Top view of the first spiral raised plate in the present invention Figure 7 ;

[0026] Figure 9 Internal structure diagram of the adjustment mechanism in the present invention Figure 1 ;

[0027] Description of the reference numerals in the figure:

[0028] 1. Spray cooling structure; 101. Spray cooling outer shell; 102. Maintenance hole; 103. Wireless controller; 104. Exhaust gas discharge pipe; 105. Exhaust gas injection pipe; 106. Drain pipe; 107. Liquid level control valve; 108. Storage solution; 109. Demister; 110. Spray pipe; 111. Spray head; 2. Flow splitting mechanism; 21. Inverted conical shell; 22. Fixed through hole; 23. Buffer conical cavity; 24. Jet check valve; 25. Gas transmission branch pipe; 26. Gas collecting cylinder; 3. Beam collecting mechanism; 31. Beam collecting tapered pipe; 32. Fixed support rod; 33. Beam collecting pipe; 4. Telescopic adapter; 41. Upper short pipe; 42. Outer sleeve bellows; 43. Lower short pipe; 44. Tapered sleeve; 5. Liquid channel extension mechanism; 51. Upper conical cover; 52. Side seal ring; 53. Lower conical cover; 54. First spiral raised plate; 55. Extended spiral flow channel; 56. Vent pipe; 57. Vent bellows; 6. Air channel extension mechanism; 61. Liquid permeable hole; 62. Liquid permeable cotton column; 63. Liquid permeable cotton disc; 64. Second spiral raised plate; 65. Closed conical shell; 66. Extended spiral air channel; 7. Adjustment mechanism; 71. Adjustment box; 72. Servo double-shaft motor; 73. Adjustment rod; 74. Adjustment wire wheel; 75. Adjustment wire; 76. Load-bearing wheel; 77. End fixing plate. Detailed implementation mode

[0029] The following will combine the accompanying drawings in the embodiments of the present invention; the technical solutions in the embodiments of the present invention will be clearly and completely described; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1-9 , an exhaust gas cooling device at the outlet of an RTO regenerative thermal oxidizer, including a spray cooling structure 1. The spray cooling structure 1 includes a spray cooling outer shell 101. There are two maintenance holes 102 on the front surface of the spray cooling outer shell 101. A wireless controller 103 is fixedly installed on the front surface of the spray cooling outer shell 101 and located between the two maintenance holes 102. The top end of the spray cooling outer shell 101 is fixedly communicated with an exhaust gas discharge pipe 104. The right side surface of the spray cooling outer shell 101 is fixedly communicated with an exhaust gas injection pipe 105 located at its bottom end. The left side surface of the spray cooling outer shell 101 is fixedly communicated with a drain pipe 106 located at its bottom end. A liquid level control valve 107 is provided on the pipeline of the drain pipe 106 and located inside the spray cooling outer shell 101. The liquid level control valve 107 is fixedly connected to the left side surface of the inner cavity of the spray cooling outer shell 101. The inside of the spray cooling outer shell 101 is filled with a storage solution 108. The liquid level control valve 107 is immersed in the storage solution 108. A demister 109 is fixedly connected to the inner wall of the spray cooling outer shell 101 and located at its top. A spray pipe 110 is fixedly inserted on the right side surface of the spray cooling outer shell 101 and located below the demister 109. The right end of the spray pipe 110 is communicated with a water pump. The water pump is electrically connected to the wireless controller 103. The left end of the spray pipe 110 extends into the inside of the spray cooling outer shell 101 and is fixedly connected to the left side surface of the inner cavity of the spray cooling outer shell 101. Spray heads 111 are fixedly communicated on the surface of the spray pipe 110 and located at its bottom.

[0031] It further includes a flow splitting mechanism 2. The flow splitting mechanism 2 includes an inverted conical shell 21. The inverted conical shell 21 is fixedly connected to the inner wall of the spray cooling outer shell 101 and located below the spray heads 111. A fixed through hole 22 is opened at the bottom end of the inverted conical shell 21. A buffer conical cavity 23 is opened inside the inverted conical shell 21. An air jet check valve 24 communicated with the buffer conical cavity 23 is fixedly inserted on the top surface of the inverted conical shell 21. An air delivery branch pipe 25 is fixedly connected to the inner wall of the fixed through hole 22. The air delivery branch pipe 25 is communicated with the buffer conical cavity 23. The other end of the air delivery branch pipe 25 is fixedly communicated with an air collection cylinder 26.

[0032] It further includes a bunching mechanism 3. The bunching mechanism 3 includes a bunching reducing pipe 31. The bunching reducing pipe 31 is fixedly connected to the inner wall of the spray cooling housing 101 and is located below the inverted conical housing 21. A fixed support rod 32 is fixedly connected to the inner wall of the bunching reducing pipe 31. The other end of the fixed support rod 32 is fixedly connected to a bunching pipe 33. The bunching pipe 33 penetrates through the bunching reducing pipe 31, and the top end of the bunching pipe 33 extends to the outside of the bunching reducing pipe 31.

[0033] It further includes a telescopic adapter 4. The telescopic adapter 4 includes an upper short pipe 41. The number of the upper short pipes 41 is two. One upper short pipe 41 is fixedly connected to the bottom surface of the inverted conical housing 21, and the other upper short pipe 41 is fixedly connected to the bottom surface of the bunching reducing pipe 31. A liquid level gauge is installed on the inner wall of the upper short pipe 41. A liquid level gauge is fixedly installed on the inner wall of the spray cooling housing 101 and is located between the spray head 111 and the inverted conical housing 21. The liquid level gauges are both electrically connected to the wireless controller 103. The bottom end of the upper short pipe 41 is fixedly communicated with an outer sleeve bellows 42. The bottom end of the outer sleeve bellows 42 is fixedly communicated with a lower short pipe 43. The bottom end of the lower short pipe 43 is fixedly communicated with a reducing sleeve 44.

[0034] It further includes a liquid channel extension mechanism 5. The liquid channel extension mechanism 5 includes an upper conical cover 51. The top end of the upper conical cover 51 is fixedly communicated with the bottom end of the reducing sleeve 44. A side sealing ring 52 is fixedly connected to the inner wall of the upper conical cover 51 and is located at its edge. The bottom end of the side sealing ring 52 is fixedly connected to a lower conical cover 53. The lower conical cover 53 is movably inserted into the upper conical cover 51. A first spiral convex plate 54 is fixedly sleeved on the outer surface of the lower conical cover 53. The top surface of the first spiral convex plate 54 is fixedly connected to the inner wall of the upper conical cover 51. An extended spiral flow channel 55 is formed between the inner wall of the upper conical cover 51, the outer surface of the lower conical cover 53, and the surface of the first spiral convex plate 54. A vent pipe 56 is fixedly inserted into the middle of the lower conical cover 53. The top end of the vent pipe 56 penetrates through the reducing sleeve 44 and extends into the outer sleeve bellows 42. The top end of the vent pipe 56 is fixedly communicated with a vent bellows 57. The vent bellows 57 is movably inserted into the outer sleeve bellows 42. The number of the vent bellows 57 is two. The top end of one vent bellows 57 is fixedly communicated with the bottom end of the air collecting cylinder 26, and the top end of the other vent bellows 57 is fixedly communicated with the bottom end of the bunching pipe 33.

[0035] It further includes an airway extension mechanism 6. The airway extension mechanism 6 includes a liquid permeating hole 61 and a second spiral convex plate 64. The liquid permeating hole 61 is opened on the lower conical cover 53 and is located inside the extended spiral flow channel 55. A liquid permeating cotton column 62 is movably inserted inside the liquid permeating hole 61. The top end of the liquid permeating cotton column 62 is fixedly connected to a liquid permeating cotton disc 63. The liquid permeating cotton disc 63 is in contact connection with the outer surface of the lower conical cover 53. The second spiral convex plate 64 is fixedly connected to the inner wall of the lower conical cover 53. The bottom end of the second spiral convex plate 64 is fixedly connected to a closed conical shell 65. An extended spiral airway 66 is formed between the outer surface of the closed conical shell 65, the surface of the second spiral convex plate 64, and the inner surface of the lower conical cover 53. The extended spiral airway 66 is adapted to the extended spiral flow channel 55. The liquid permeating cotton column 62 is located inside the extended spiral airway 66.

[0036] It further includes an adjustment mechanism 7. The adjustment mechanism 7 includes adjustment boxes 71. The number of adjustment boxes 71 is two. The two adjustment boxes 71 are respectively fixedly connected to the left and right side surfaces of the spray cooling outer shell 101. A servo double-shaft motor 72 is provided inside the adjustment box 71. The servo double-shaft motor 72 is electrically connected to the wireless controller 103. The servo double-shaft motor 72 is bolt-mounted on the surface of the spray cooling outer shell 101. The end of the output shaft of the servo double-shaft motor 72 is fixedly connected to an adjustment rod 73. An adjustment wire wheel 74 is fixedly sleeved outside the adjustment rod 73 at its end. An adjustment wire 75 is fixedly connected to the outside of the adjustment wire wheel 74. The adjustment wire 75 is wound around the outside of the adjustment wire wheel 74. The other end of the adjustment wire 75 extends into the spray cooling outer shell 101 and is movably sleeved with a bearing wheel 76. The number of bearing wheels 76 is four. Two bearing wheels 76 are fixedly installed on the bottom surface of the inverted conical shell 21. The other two bearing wheels 76 are fixedly connected to the bottom surface of the converging tapered tube 31. The end of the adjustment wire 75 is fixedly connected to the surface of the upper conical cover 51. An end fixing plate 77 is movably sleeved at the end of the adjustment rod 73. The right end of the end fixing plate 77 is fixedly connected to the inner wall of the adjustment box 71. The other end of the end fixing plate 77 is fixedly connected to the surface of the spray cooling outer shell 101.

[0037] Working principle:

[0038] First, an instruction is sent to the wireless controller 103 according to the properties of the exhaust gas. Then, the wireless controller 103 controls the operation of the servo dual-axis motor 72. When the wireless controller 103 controls the servo dual-axis motor 72 to run forward, the servo dual-axis motor 72 drives the adjusting rod 73 to rotate clockwise. Then, the adjusting rod 73 drives the adjusting wire wheel 74 to rotate clockwise. After that, the adjusting wire 75 winds around the outside of the adjusting wire wheel 74. Then, the adjusting wire 75 pulls the liquid channel extension mechanism 5 upward. Next, the liquid channel extension mechanism 5 drives the lower short tube 43 upward through the tapered sleeve 44. After that, the lower short tube 43 moves upward and squeezes the outer bellows 42. Then, the outer bellows 42 elastically shortens. At the same time, the ventilation bellows 57 is squeezed by the ventilation pipe 56 and shortens synchronously. Then, the total length of the telescopic adapter 4 becomes shorter, which is used to shorten the length of the liquid column. The liquid column becomes shorter and the hydraulic pressure becomes smaller, so that the speed of the cooling absorption liquid passing through the liquid-permeating cotton disc 63 and the liquid-permeating cotton column 62 becomes slower, which is suitable for exhaust gas with a small content of inorganic compounds and a low temperature. When the wireless controller 103 controls the servo dual-axis motor 72 to run in reverse, the servo dual-axis motor 72 drives the adjusting rod 73 to rotate counterclockwise. Then, the adjusting rod 73 drives the adjusting wire wheel 74 to rotate counterclockwise. After that, the adjusting wire 75 is released from the outside of the adjusting wire wheel 74. Then, the liquid channel extension mechanism 5 slides downward under the action of its own gravity. Next, the liquid channel extension mechanism 5 pulls the telescopic adapter 4. After that, the total length of the telescopic adapter 4 becomes longer. At the same time, the ventilation bellows 57 is pulled by the ventilation pipe 56 and elongates synchronously, which is used to lengthen the length of the liquid column. The liquid column becomes longer and the hydraulic pressure becomes larger, so that the speed of the cooling absorption liquid passing through the liquid-permeating cotton disc 63 and the liquid-permeating cotton column 62 becomes faster, which is suitable for exhaust gas with a large content of inorganic compounds and a high temperature. Then, the wireless controller 103 adjusts the length of the telescopic adapter 4 to a length adapted to the properties of the exhaust gas according to the instruction. Then, the wireless controller 103 turns off the servo dual-axis motor 72. After that, the spray pipe 110 is connected to an external water pump, and the water pump is controlled by the wireless controller 103. Then, the wireless controller 103 turns on the water pump. Next, the water pump quickly pumps the cooling absorption liquid into the spray pipe 110 at the maximum power. After that, the spray pipe 110 quickly sprays the cooling absorption liquid through the spray head 111, so that a rain curtain layer is formed between the spray head 111 and the flow splitting mechanism 2. Then, the spilled cooling absorption liquid converges on the inner surface of the inverted conical shell 21 and passes through the fixed through holes 22 into the corresponding telescopic adapter 4. Next, the cooling absorption liquid enters the corresponding extended spiral flow channel 55 from the telescopic adapter 4 and rotates downward along its trajectory. After that, the extended spiral flow channel 55 is gradually filled with the cooling absorption liquid. Then, the cooling absorption liquid passes through the pores in the liquid-permeating cotton column 62 and the liquid-permeating cotton disc 63 into the extended spiral air channel 66. When the water pump works at the maximum power, the spraying speed of the spray head 111 is much greater than the speed of the cooling absorption liquid passing through the liquid-permeating cotton column 62 and the liquid-permeating cotton disc 63. Then, the liquid level inside the telescopic adapter 4 gradually rises. After that, the liquid level rises to the inside of the inverted conical shell 21.Then the liquid level rises above the inverted conical shell 21 and submerges the liquid level gauge on the inner wall of the spray cooling outer shell 101. Then the wireless controller 103 controls the water pump to stop running. After that, the liquid level will gradually drop. Then when the liquid level is lower than the liquid level gauge on the inner wall of the upper short pipe 41, the wireless controller 103 controls the water pump to restart, so that the liquid level reaches the position of the liquid level gauge on the inner wall of the spray cooling outer shell 101 again. Then the cooling absorption liquid entering the extended spiral air duct 66 flows spirally downward along its trajectory and slides down from the edge of the closed conical shell 65. After that, the sliding cooling absorption liquid converges inside the beam-shaped tapered pipe 31 and passes through the telescopic adapter 4 below it and enters the corresponding extended spiral flow path 55. Then the cooling absorption liquid inside this extended spiral flow path 55 passes through the liquid-permeating cotton column 62 and the liquid-permeating cotton disc 63 and enters the extended spiral air duct 66 below it. Then the cooling absorption liquid in the extended spiral air duct 66 slides down from the edge of the closed conical shell 65 and flows into the storage solution 108. During this process, since the liquid column length corresponding to the flow splitting mechanism 2 is greater than the liquid column length corresponding to the beam-shaped mechanism 3, the dripping speed of the cooling absorption liquid from the liquid channel extension mechanism 5 and the air duct extension mechanism 6 corresponding to the flow splitting mechanism 2 is greater than the dripping speed from the liquid channel extension mechanism 5 and the air duct extension mechanism 6 corresponding to the beam-shaped mechanism 3. After that, the liquid level in the extended spiral flow path 55 and the telescopic adapter 4 below the beam-shaped mechanism 3 gradually rises. Then the liquid level gauge below the beam-shaped mechanism 3 is submerged by the cooling absorption liquid. Then this liquid level gauge sends a signal to the wireless controller 103, causing the wireless controller 103 to enter a stable period. After that, the wireless controller 103 controls the water pump to shut down. Then the liquid level inside the flow splitting mechanism 2 gradually drops. Then the liquid level enters the telescopic adapter 4 below the flow splitting mechanism 2. After that, the liquid level gauge below the flow splitting mechanism 2 emerges from the liquid surface. Then this liquid level gauge sends a signal to the wireless controller 103. Then the wireless controller 103 controls the water pump to work at low power. After that, the liquid level height in the telescopic adapter 4 below the flow splitting mechanism 2 slowly increases. Then the liquid level gauge in the telescopic adapter 4 below the flow splitting mechanism 2 is submerged by the cooling absorption liquid. Then this liquid level gauge sends a signal to the wireless controller 103. After that, the wireless controller 103 controls the water pump to stop. When the liquid level gauge in the telescopic adapter 4 below the beam-shaped mechanism 3 emerges from the cooling absorption liquid, it also sends a signal to the wireless controller 103. The wireless controller 103 controls the water pump to work at low power according to this signal, increasing the height of the liquid column corresponding to the flow splitting mechanism 2, so that the cooling absorption liquid accelerates and flows into the interior of the telescopic adapter 4 below the beam-shaped mechanism 3 until the liquid level gauge in the telescopic adapter 4 below the beam-shaped mechanism 3 is submerged by the cooling absorption liquid. At this time, the wireless controller 103 also controls the water pump to stop. Repeat this way, so that the wireless controller 103 can control the total length of the liquid column to fluctuate within a specified range, thereby controlling the total dripping speed of the cooling absorption liquid through the liquid-permeating cotton column 62 and the liquid-permeating cotton disc 63. Then the liquid level of the storage solution 108 increases. Then the liquid level height of the storage solution 108 rises high enough to trigger the liquid level control valve 107.After that, the liquid level control valve 107 opens, and then part of the stored solution 108 is discharged from the drain pipe 106. Then, the liquid level of the stored solution 108 drops. After that, the liquid level height of the stored solution 108 is restored. At this time, the liquid level control valve 107 automatically closes. Then, waste gas is introduced through the waste gas injection pipe 105. Then, the waste gas enters the stored solution 108. Then, the stored solution 108 preliminarily cools the waste gas and preliminarily absorbs the inorganic compounds in the waste gas. Then, the waste gas overflows from the top of the stored solution 108. After that, the waste gas flows upward. Then, the waste gas enters the extended spiral air duct 66 below the beam mechanism 3 and spirally flows upward along its trajectory. Then, the waste gas contacts the cooling and absorption liquid flowing down from the permeable cotton column 62 and the cooling and absorption liquid flowing inside the extended spiral air duct 66. The cooling and absorption liquid cools and absorbs the waste gas. After that, the waste gas passes through the ventilation pipe 56 and the ventilation bellows 57, is ejected from the beam pipe 33 and continues to flow upward. Then, the waste gas enters the extended spiral air duct 66 below the shunt mechanism 2. Then, the cooling and absorption liquid in this extended spiral air duct 66 further cools and absorbs the waste gas. After that, the waste gas passes through the corresponding ventilation pipe 56, ventilation bellows 57, air collecting cylinder 26, gas transmission branch pipe 25, buffer conical cavity 23 and is dispersed and ejected from the jet check valve 24. Then, the dispersed waste gas directly contacts the cooling and absorption liquid sprayed by the spray head 111 to cool and absorb the waste gas again. Then, the waste gas is demisted by the demister 109 and is discharged into the caustic scrubber through the waste gas discharge pipe 104, and that's it.,

[0039] The above; only the preferred specific embodiments of the present invention; but the protection scope of the present invention is not limited thereto; any person skilled in the art within the technical scope disclosed by the present invention; according to the technical solution of the present invention and its improved conceptions, making equivalent substitutions or changes; should be covered by the protection scope of the present invention.,

Claims

1. An exhaust gas cooling device at the outlet of an RTO regenerative thermal oxidizer, comprising a spray cooling structure (1), characterized in that: The described spray cooling structure (1) includes a spray cooling outer shell (101). There are two maintenance holes (102) provided on the front surface of the spray cooling outer shell (101). A wireless controller (103) is fixedly installed on the front surface of the spray cooling outer shell (101) and is located between the two maintenance holes (102). An exhaust gas discharge pipe (104) is fixedly connected to the top end of the spray cooling outer shell (101). An exhaust gas injection pipe (105) is fixedly connected to the right side surface of the spray cooling outer shell (101) and is located at its bottom end. A drain pipe (106) is fixedly connected to the left side surface of the spray cooling outer shell (101) and is located at its bottom end. A liquid level control valve (107) is provided on the pipeline of the drain pipe (106) and is located inside the spray cooling outer shell (101). The liquid level control valve (107) is fixedly connected to the left side surface of the inner cavity of the spray cooling outer shell (101). The inside of the spray cooling outer shell (101) is filled with a storage solution (108). The liquid level control valve (107) is immersed in the storage solution (108). A demister (109) is fixedly connected to the inner wall of the spray cooling outer shell (101) and is located at its top. A spray pipe (110) is fixedly inserted on the right side surface of the spray cooling outer shell (101) and is located below the demister (109). The left end of the spray pipe (110) extends into the inside of the spray cooling outer shell (101) and is fixedly connected to the left side surface of the inner cavity of the spray cooling outer shell (101). Spray nozzles (111) are fixedly communicated with the surface of the spray pipe (110) and are located at its bottom. It further includes a flow splitting mechanism (2). The flow splitting mechanism (2) includes an inverted conical shell (21). The inverted conical shell (21) is fixedly connected to the inner wall of the spray cooling outer shell (101) and is located below the spray nozzles (111). A fixed through hole (22) is opened at the bottom end of the inverted conical shell (21). A buffer conical cavity (23) is opened inside the inverted conical shell (21). An air jet check valve (24) communicated with the buffer conical cavity (23) is fixedly inserted on the top surface of the inverted conical shell (21). An air delivery branch pipe (25) is fixedly connected to the inner wall of the fixed through hole (22). The air delivery branch pipe (25) is communicated with the buffer conical cavity (23). The other end of the air delivery branch pipe (25) is fixedly communicated with an air collection cylinder (26). It further includes a beam collecting mechanism (3). The beam collecting mechanism (3) includes a beam collecting tapered pipe (31). The beam collecting tapered pipe (31) is fixedly connected to the inner wall of the spray cooling outer shell (101) and is located below the inverted conical shell (21). A fixed support rod (32) is fixedly connected to the inner wall of the beam collecting tapered pipe (31). The other end of the fixed support rod (32) is fixedly connected to a beam collecting pipe (33). The beam collecting pipe (33) penetrates through the beam collecting tapered pipe (31). The top end of the beam collecting pipe (33) extends to the outside of the beam collecting tapered pipe (31). It also includes a telescopic adapter (4). The telescopic adapter (4) includes upper short tubes (41). The number of the upper short tubes (41) is two. One upper short tube (41) is fixedly connected to the bottom surface of the inverted conical housing (21), and the other upper short tube (41) is fixedly connected to the bottom surface of the converging tapered tube (31). The bottom end of the upper short tube (41) is fixedly communicated with an outer sleeve bellows (42). The bottom end of the outer sleeve bellows (42) is fixedly communicated with a lower short tube (43). The bottom end of the lower short tube (43) is fixedly communicated with a tapered sleeve (44). It also includes a liquid channel extension mechanism (5). The liquid channel extension mechanism (5) includes an upper conical cover (51). The top end of the upper conical cover (51) is fixedly communicated with the bottom end of the tapered sleeve (44). A side seal ring (52) located at its edge is fixedly connected to the inner wall of the upper conical cover (51). The bottom end of the side seal ring (52) is fixedly connected to a lower conical cover (53). The lower conical cover (53) is movably inserted into the inside of the upper conical cover (51). A first spiral raised plate (54) is fixedly sleeved on the outer surface of the lower conical cover (53). The top surface of the first spiral raised plate (54) is fixedly connected to the inner wall of the upper conical cover (51). An extended spiral flow channel (55) is formed between the inner wall of the upper conical cover (51), the outer surface of the lower conical cover (53), and the surface of the first spiral raised plate (54). A ventilation pipe (56) located in the middle is fixedly inserted into the lower conical cover (53). The top end of the ventilation pipe (56) penetrates through the tapered sleeve (44) and extends into the inside of the outer sleeve bellows (42). The top end of the ventilation pipe (56) is fixedly communicated with a ventilation bellows (57). The ventilation bellows (57) is movably inserted into the inside of the outer sleeve bellows (42). The number of the ventilation bellows (57) is two. The top end of one ventilation bellows (57) is fixedly communicated with the bottom end of the air collecting cylinder (26), and the top end of the other ventilation bellows (57) is fixedly communicated with the bottom end of the converging tube (33). It also includes an air channel extension mechanism (6). The air channel extension mechanism (6) includes a liquid permeating hole (61) and a second spiral raised plate (64). The liquid permeating hole (61) is opened on the lower conical cover (53) and is located inside the extended spiral flow channel (55). A liquid permeating cotton column (62) is movably inserted into the inside of the liquid permeating hole (61). The top end of the liquid permeating cotton column (62) is fixedly connected to a liquid permeating cotton disc (63). The liquid permeating cotton disc (63) is in contact connection with the outer surface of the lower conical cover (53). The second spiral raised plate (64) is fixedly connected to the inner wall of the lower conical cover (53). The bottom end of the second spiral raised plate (64) is fixedly connected to a closed conical shell (65). An extended spiral air channel (66) is formed between the outer surface of the closed conical shell (65), the surface of the second spiral raised plate (64), and the inner surface of the lower conical cover (53). The extended spiral air channel (66) is adapted to the extended spiral flow channel (55). The liquid permeating cotton column (62) is located inside the extended spiral air channel (66).

2. The waste gas cooling device at the outlet of an RTO regenerative thermal oxidizer according to claim 1, characterized in that: It further includes an adjusting mechanism (7). The adjusting mechanism (7) includes adjusting boxes (71). The number of the adjusting boxes (71) is two, and the two adjusting boxes (71) are respectively fixedly connected to the left and right side surfaces of the spray cooling housing (101). A servo double-shaft motor (72) is arranged inside the adjusting box (71). The servo double-shaft motor (72) is bolted to the surface of the spray cooling housing (101). A regulating rod (73) is fixedly connected to the end of the output shaft of the servo double-shaft motor (72). An adjusting wire wheel (74) located at its end is fixedly sleeved outside the regulating rod (73). An adjusting wire (75) is fixedly connected to the outside of the adjusting wire wheel (74). The adjusting wire (75) is wound around the outside of the adjusting wire wheel (74). The other end of the adjusting wire (75) extends into the interior of the spray cooling housing (101) and is movably sleeved with a bearing wheel (76). The number of the bearing wheels (76) is four. Two bearing wheels (76) are fixedly installed on the bottom surface of the inverted conical shell (21). The other two bearing wheels (76) are fixedly connected to the bottom surface of the beam shrinking tube (31). The end of the adjusting wire (75) is fixedly connected to the surface of the upper conical cover (51). An end fixing plate (77) is movably sleeved on the end of the regulating rod (73). The right end of the end fixing plate (77) is fixedly connected to the inner wall of the adjusting box (71). The other end of the end fixing plate (77) is fixedly connected to the surface of the spray cooling housing (101).

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