RTO and waste heat recovery integrated energy-saving equipment and process

Abstract

The invention discloses RTO and waste heat recovery integrated energy-saving equipment and technology, and belongs to the technical field of industrial waste gas treatment.The RTO and waste heat recovery integrated energy-saving equipment comprises a heat exchange box, a combustion chamber is installed at the top of the heat exchange box, a centrifugal fan is installed on one side of the heat exchange box, and a partition plate is installed on the inner wall of the heat exchange box; a spiral air inlet pipe and a spiral exhaust pipe are installed on the inner wall of the heat exchange box, the spiral air inlet pipe is connected with the centrifugal fan, guide pipes are installed at one end of the spiral air inlet pipe and one end of the spiral exhaust pipe, the top ends of the guide pipes are connected with the combustion chamber, the other end of the spiral exhaust pipe extends to the outer side of the heat exchange box, and a pressure discharging cylinder is installed at the top of the partition plate. The spiral gas inlet pipe and the spiral gas outlet pipe are nested in the heat exchange box, the heat exchange efficiency of waste gas and water is remarkably improved by prolonging the gas flow path and increasing the contact area, and high-temperature waste gas fully releases heat to preheat cold water when passing through the spiral gas outlet pipe; meanwhile, the spiral gas inlet pipe preheats waste gas to be treated through waste heat, and energy consumption of the combustion chamber is reduced.

Description

Technical Field

[0001] This invention belongs to the field of industrial waste gas treatment technology, specifically, it relates to an integrated energy-saving device and process for RTO and waste heat recovery. Background Technology

[0002] Regenerative Thermal Oxidizers (RTOs) are a highly efficient combustion technology widely used in industrial waste gas treatment. Their core principle is to recover heat from the combustion waste gas using a regenerative ceramic body, which is then used to preheat the incoming waste gas, thereby reducing fuel consumption. However, traditional RTO systems still have the following problems:

[0003] Although the thermal storage ceramics of current RTOs can recover some heat, a large amount of high-temperature waste gas is still directly emitted, resulting in energy waste. Traditional RTOs only use waste heat to preheat waste gas without further converting it into usable energy such as hot water and steam, resulting in low overall energy efficiency. Some improved RTOs attempt to combine with waste heat boilers, but lack intelligent water circulation control, which easily leads to uneven heat exchange or steam waste.

[0004] To address the aforementioned issues, this application proposes an integrated energy-saving device and process for RTO and waste heat recovery. Summary of the Invention

[0005] In response to the problems in related technologies, this invention proposes an integrated energy-saving device and process for RTO and waste heat recovery to overcome the aforementioned technical problems existing in the existing related technologies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The integrated energy-saving equipment for RTO and waste heat recovery includes a heat exchange box, a combustion chamber installed on the top of the heat exchange box, a centrifugal fan installed on one side of the heat exchange box, a partition installed on the inner wall of the heat exchange box, a spiral air inlet pipe and a spiral exhaust pipe installed on the inner wall of the heat exchange box, the spiral air inlet pipe being connected to the centrifugal fan, a conduit installed at one end of both the spiral air inlet pipe and the spiral exhaust pipe, the top end of the conduit being connected to the combustion chamber, the other end of the spiral exhaust pipe extending to the outside of the heat exchange box, and a pressure relief cylinder installed on the top of the partition.

[0008] The automatic water changing mechanism includes an inlet pipe and a drain pipe. The inlet pipe is installed in the middle right side of the heat exchange box, and the drain pipe is installed in the lower left side of the heat exchange box. Both the inlet pipe and the drain pipe are matched with the pressure discharge cylinder.

[0009] A high-temperature exhaust mechanism includes an exhaust stack, which is fixedly installed on the top inner wall of a heat exchange box. An exhaust pipe is installed on one side of the exhaust stack, and one end of the exhaust pipe extends to the outside of the heat exchange box.

[0010] Preferably, the automatic water changing mechanism further includes two sealing boxes, which are fixedly installed on the inner walls of the heat exchange box on both sides. The sealing boxes are provided with guide holes, which are connected to the water inlet pipe and the water outlet pipe respectively. A plug is slidably connected to the inner wall of the sealing box, and a connecting hole is provided on the plug. The connecting hole and the guide hole cooperate with each other.

[0011] The guide holes on the sealed box facilitate the introduction and discharge of water into the heat exchange box. The stopper block helps to seal the guide holes, and the connecting holes allow the guide holes to be connected. The stopper block is used to control the water supply. The inlet pipe is connected to an external water source, and the water is replenished or replaced when the water in the heat exchange box boils. The drain pipe is connected to an external heat preservation and storage device, which keeps the hot water in the heat exchange box warm.

[0012] Preferably, a piston plate is slidably connected to the inner wall of the pressure discharge cylinder, a conversion box is rotatably connected to the top of the piston plate, a piston tube is fixedly installed on the top of the conversion box, connecting pipes are installed on both sides of the pressure discharge cylinder, and drive boxes are fixedly installed on both sides of the inner wall of the heat exchange box, with one end of the connecting pipe connected to the corresponding drive box.

[0013] When the water in the heat exchanger is heated to boiling, it expands, which pushes the piston plate and the conversion box upward. The conversion box and the piston plate push the air above the pressure discharge cylinder and inject it into the drive box through the connecting pipe.

[0014] Preferably, a drive plate is slidably connected to the inner wall of the drive box, and a pull rod is fixedly installed at the bottom of the drive plate, with the pull rod being fixedly connected to the corresponding plug.

[0015] Gas is injected into the drive box through the connecting pipe, which pushes the drive plate upward. The drive plate then moves the pull rod, which in turn controls the block to move up and down.

[0016] Preferably, the high-temperature exhaust mechanism further includes a control box, which is rotatably mounted on the inner wall of the exhaust pipe. The control box has a steam guide hole, which cooperates with the exhaust pipe.

[0017] The rotating control box causes the steam guide hole to change angle, so that the steam guide hole and the exhaust pipe are connected to each other, thereby enabling the water vapor in the piston tube to be discharged and the heat to be recovered and utilized.

[0018] Preferably, the piston plate has a through hole, the conversion box has a mating hole, the through hole and the mating hole are mated together, and limit grooves are opened on both sides of the pressure discharge cylinder. Limit blocks are slidably connected to the inner wall of the limit grooves, and the limit blocks are fixedly connected to the piston plate.

[0019] The rotating conversion box drives the mating hole to rotate. When the mating hole rotates to coincide with the through hole, the space below the conversion box and the piston plate are connected, allowing the water vapor in the conversion box to be discharged through the conversion box and the piston tube.

[0020] Preferably, a drive shaft is rotatably connected to one side of the heat exchange box, a first bevel gear is fixedly installed at one end of the drive shaft, a second bevel gear is slidably connected to the piston tube, the first bevel gear and the second bevel gear mesh with each other, and a stabilizing box is movably connected to the piston tube, the stabilizing box is rotatably connected to the drive shaft, and both the first bevel gear and the second bevel gear are located inside the stabilizing box.

[0021] The rotating drive shaft can drive the second bevel gear to rotate through the meshing of the first bevel gear and the second bevel gear. The second bevel gear can drive the piston tube to rotate laterally through the sliding connection between the piston tube and the piston tube. At the same time, the setting of the stabilizing box can stabilize the rotation state of the drive shaft and the piston tube and seal the meshing state of the first bevel gear and the second bevel gear.

[0022] Preferably, a preheating box is installed on the bottom inner wall of the heat exchange box, a spiral air intake pipe passes through the preheating box, and a controller is fixedly installed on the outside of the combustion chamber, the controller being connected to the preheating box.

[0023] By setting up a preheating box, active preheating can be carried out when the spiral intake pipe guides the air, which facilitates the combustion process in the combustion chamber later.

[0024] Preferably, the centrifugal fan is equipped with a filter box, and the filter box contains a two-stage filter plate.

[0025] The centrifugal fan facilitates the active injection of exhaust gas, and the filter box filters out solid particles from the incoming exhaust gas, preventing particles from entering the spiral intake pipe and affecting its heat exchange efficiency.

[0026] The method for using an integrated RTO and waste heat recovery energy-saving device includes the following steps:

[0027] S1: Exhaust gas is introduced and combusted. The exhaust gas is injected through a centrifugal fan and a spiral intake pipe. The spiral intake pipe is then injected into the combustion chamber through a conduit for combustion. During the initial injection, the exhaust gas is preheated in a preheating box. After combustion in the combustion chamber, the treated gas is discharged through another conduit and a spiral exhaust pipe. The gas discharged from the combustion chamber is at a high temperature and exchanges heat with the water in the heat exchange box under the action of the spiral exhaust pipe, thereby recovering energy. After the water in the heat exchange box is heated by the spiral exhaust pipe, the preheating box is closed. The gas entering through the spiral intake pipe is preheated by the hot water in the heat exchange box, thus achieving a preheating and energy-saving effect.

[0028] S2: When the water in the heat exchanger is heated to boiling under the action of the spiral exhaust pipe, the boiling water produces water vapor, which pushes the piston plate and the conversion box upward. The conversion box squeezes the gas in the pressure discharge cylinder, so that the gas in the pressure discharge cylinder is injected into the corresponding drive box through the connecting pipe. The gas pushes the drive plate upward, the drive plate drives the pull rod to move, and the pull rod controls the plug to move up and down. When the plug moves upward, the connecting hole and the guide hole are connected, so that the water inlet pipe and the water outlet pipe are connected to the outside, and the boiling water in the heat exchanger is replaced, so that the heated water source can be collected, stored or used for other purposes. When the water temperature in the heat exchanger drops, the piston plate loses the upward pushing force, so that the piston plate and the conversion box return to the downward. At the same time, the plug and the drive plate also return to the downward under the action of gravity, so as to reseal the heat exchanger.

[0029] S3: When water vapor recovery is required, the drive shaft is rotated. The drive shaft, through the meshing of the first and second bevel gears, drives the second bevel gear to rotate. The second bevel gear, through its sliding connection with the piston tube, drives the piston tube to rotate laterally. The piston tube drives the conversion box to rotate, making the mating hole and the through hole interconnected. This allows water vapor in the heat exchange box to be introduced into the conversion box through the through hole and the mating hole, and then flows into the control box through the piston tube. At this time, the rotating control box drives the steam guide hole and the steam exhaust pipe to connect, allowing the water vapor in the control box to be discharged through the steam exhaust pipe and then connected to an external collection device for collection and treatment.

[0030] In summary, the technical effects and advantages of this invention are as follows:

[0031] 1. A spiral intake pipe and a spiral exhaust pipe are nested inside the heat exchange box. By extending the airflow path and increasing the contact area, the heat exchange efficiency between the exhaust gas and water is significantly improved. When the high-temperature exhaust gas passes through the spiral exhaust pipe, it fully releases heat to preheat the cold water. At the same time, the spiral intake pipe uses waste heat to preheat the exhaust gas to be treated, reducing the energy consumption of the combustion chamber.

[0032] 2. The steam pressure generated by the boiling water in the heat exchange box drives the piston plate and the conversion box. The opening and closing of the plug is controlled by the connecting pipe and the drive box, realizing the automatic discharge of boiling hot water and the replenishment of cold water. No additional energy is required. The water exchange cycle is completed by relying only on steam pressure and water gravity, which is energy-saving and highly reliable.

[0033] 3. Through the precise matching of the guide hole and the connection hole, the inlet pipe and the outlet pipe can be opened and closed synchronously to avoid mixing of hot and cold water.

[0034] 4. The bevel gear set driven by the drive shaft drives the control box to rotate, controlling the opening and closing of the steam guide hole and the exhaust pipe, realizing the directional collection or discharge of steam. The piston tube and the conversion box are slidably connected, and the periodic alignment of the through hole and the mating hole realizes the automatic opening and closing of the steam channel to avoid energy leakage.

[0035] 5. In the initial stage, the exhaust gas is preheated through the preheating box; subsequently, the exhaust gas in the spiral intake pipe is preheated again by the hot water in the heat exchange box, forming a closed-loop energy-saving process of "exhaust gas preheating-combustion-waste heat recovery". The controller automatically shuts down the preheating box according to the water temperature to avoid excessive energy consumption. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the internal structure of the heat exchanger box of the present invention;

[0038] Figure 3 This is a schematic diagram of the internal rear view of the heat exchanger box of the present invention;

[0039] Figure 4 This is a schematic diagram of the high-temperature exhaust mechanism of the present invention;

[0040] Figure 5 This is a schematic diagram of the piston plate, conversion box, and piston tube structure of the present invention;

[0041] Figure 6 This is a schematic diagram of the automatic water changing mechanism of the present invention;

[0042] Figure 7 This is a cross-sectional view of the pressure relief cylinder of the present invention.

[0043] In the picture:

[0044] 1. Heat exchanger; 2. Combustion chamber; 3. Centrifugal fan; 4. Baffle plate;

[0045] 5. Automatic water changing mechanism; 51. Drive box; 52. Drive board; 53. Pull rod; 54. Sealing box; 55. Plug; 56. Guide hole; 57. Connection hole; 58. Drain pipe; 59. Inlet pipe;

[0046] 6. High-temperature exhaust mechanism; 61. Exhaust stack; 62. Control box; 63. Piston tube; 64. Steam guide hole; 65. Exhaust pipe; 66. Drive shaft; 67. First bevel gear; 68. Second bevel gear; 69. Conversion box; 610. Mating hole; 611. Through hole;

[0047] 7. Spiral intake pipe; 8. Spiral exhaust pipe; 9. Conduit; 10. Preheating box; 11. Pressure relief cylinder; 12. Connecting pipe; 13. Filter box; 14. Controller; 15. Piston plate. Detailed Implementation

[0048] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0049] Reference Figure 1-7 The integrated energy-saving equipment and process for RTO and waste heat recovery includes a heat exchange box 1, a combustion chamber 2 installed on the top of the heat exchange box 1, a centrifugal fan 3 installed on one side of the heat exchange box 1, a partition 4 installed on the inner wall of the heat exchange box 1, a spiral air inlet pipe 7 and a spiral exhaust pipe 8 installed on the inner wall of the heat exchange box 1, the spiral air inlet pipe 7 being connected to the centrifugal fan 3, a conduit 9 being installed at one end of both the spiral air inlet pipe 7 and the spiral exhaust pipe 8, the top end of the conduit 9 being connected to the combustion chamber 2, and the other end of the spiral exhaust pipe 8 extending to the outside of the heat exchange box 1, and a pressure discharge cylinder 11 being installed on the top of the partition 4;

[0050] The automatic water changing mechanism 5 includes an inlet pipe 59 and a drain pipe 58. The inlet pipe 59 is installed in the middle right side of the heat exchange box 1, and the drain pipe 58 is installed in the lower left side of the heat exchange box 1. Both the inlet pipe 59 and the drain pipe 58 are in cooperation with the pressure discharge cylinder 11.

[0051] The high-temperature exhaust mechanism 6 includes an exhaust cylinder 61, which is fixedly installed on the top inner wall of the heat exchange box 1. An exhaust pipe 65 is installed on one side of the exhaust cylinder 61, and one end of the exhaust pipe 65 extends to the outside of the heat exchange box 1.

[0052] Reference Figure 3 and Figure 6The automatic water changing mechanism 5 also includes two sealing boxes 54, which are fixedly installed on the inner walls of both sides of the heat exchange box 1. Each sealing box 54 has a guide hole 56, which communicates with the inlet pipe 59 and the outlet pipe 58, respectively. A stopper 55 is slidably connected to the inner wall of the sealing box 54, and a connecting hole 57 is provided on the stopper 55. The connecting hole 57 cooperates with the guide hole 56. A piston plate 15 is slidably connected to the inner wall of the pressure discharge cylinder 11. A conversion box 69 is rotatably connected to the top of the piston plate 15, and a piston tube 63 is fixedly installed on the top of the conversion box 69. Connecting pipes 12 are installed on both sides of the pressure discharge cylinder 11. A drive box 51 is fixedly installed on the inner walls of both sides of the heat exchange box 1. One end of the connecting pipe 12 is connected to the corresponding drive box 51. A drive plate 52 is slidably connected to the inner wall of the drive box 51, and a pull rod 53 is fixedly installed at the bottom of the drive plate 52. The pull rod 53 is fixedly connected to the corresponding stopper 55. When the water in the heat exchange box 1 is heated to boiling, it expands, pushing the piston plate 15 and the conversion box 69 upward. The conversion box 69 and the piston plate 15 push the air above the pressure discharge cylinder 11 and inject it into the drive box 51 through the connecting pipe 12. The gas injected into the drive box 51 through the connecting pipe 12 pushes the drive plate 52 upward. The drive plate 52 drives the pull rod 53 to move. The pull rod 53 controls the plug block 55 to move up and down. The guide hole 56 on the sealing box 54 facilitates the introduction and discharge of water in the heat exchange box 1. At the same time, the plug block 55 can easily seal the guide hole 56. The guide hole 56 can be opened through the connecting hole 57, so the water source can be controlled by the plug block 55. The water inlet pipe 59 is connected to an external water source and the water source is replenished and replaced when the water in the heat exchange box 1 boils. The drain pipe 58 is connected to an external heat preservation and storage device, and the hot water in the heat exchange box 1 is kept warm and stored through the drain pipe 58.

[0053] Reference Figure 4The high-temperature exhaust mechanism 6 also includes a control box 62, which is rotatably mounted on the inner wall of the exhaust cylinder 61. The control box 62 has a steam guide hole 64, which cooperates with the exhaust pipe 65. The piston plate 15 has a through hole 611, and the conversion box 69 has a mating hole 610, which cooperates with the through hole 611. Limit grooves are provided on the inner upper sides of both sides of the exhaust cylinder 11, and limit blocks are slidably connected to the inner walls of the limit grooves. The limit blocks are fixedly connected to the piston plate 15. A drive shaft 66 is rotatably connected to one side of the heat exchange box 1. A first bevel gear 67 is fixedly mounted on one end of the drive shaft 66. A second bevel gear 68 is slidably connected to the piston tube 63, and the first bevel gear 67 and the second bevel gear 68 mesh with each other. A stabilizing box is movably connected to the piston tube 63, and the stabilizing box is rotatably connected to the drive shaft 66. Both the first bevel gear 67 and the second bevel gear 68 are located inside the stabilizing box. The rotating drive shaft 66, through the meshing of the first bevel gear 67 and the second bevel gear 68, drives the second bevel gear 68 to rotate. The second bevel gear 68, through its sliding connection with the piston tube 63, drives the piston tube 63 to rotate laterally. Simultaneously, the stabilizing box stabilizes the rotational state of the drive shaft 66 and the piston tube 63 and seals the meshing state of the first bevel gear 67 and the second bevel gear 68. The rotating control box 62 causes the steam guide hole 64 to change angle, so that the steam guide hole 64 and the exhaust pipe 65 are interconnected, thereby allowing the water vapor in the piston tube 63 to be discharged. The rotating conversion box 69 causes the mating hole 610 to rotate. When the mating hole 610 rotates to coincide with the through hole 611, the conversion box 69 and the space below the piston plate 15 are interconnected, allowing the water vapor in the conversion box 1 to be discharged through the conversion box 69 and the piston tube 63.

[0054] Reference Figure 3 A preheating box 10 is installed on the bottom inner wall of the heat exchange box 1. The spiral air intake pipe 7 passes through the preheating box 10, and a controller 14 is fixedly installed on the outside of the combustion chamber 2. The controller 14 is connected to the preheating box 10. Through the setting of the preheating box 10, active preheating can be carried out when the spiral air intake pipe 7 guides the air, so as to facilitate the combustion process of the combustion chamber 2 later.

[0055] Reference Figure 2 The centrifugal fan 3 is equipped with a filter box 13, and the filter box 13 is equipped with a two-stage filter plate. The centrifugal fan 3 can be used to actively inject exhaust gas, and the filter box 13 can filter solid particles in the incoming exhaust gas to prevent particles from entering the spiral air inlet pipe 7 and affecting the heat exchange efficiency of the spiral air inlet pipe 7.

[0056] The method for using an integrated RTO and waste heat recovery energy-saving device includes the following steps:

[0057] S1: Exhaust gas is introduced and combusted. The exhaust gas is injected through the centrifugal fan 3 and the spiral intake pipe 7. The spiral intake pipe 7 is injected into the combustion chamber 2 through the conduit 9 for combustion. During the initial injection, the exhaust gas is preheated by the preheating box 10. After combustion in the combustion chamber 2, the treated gas is discharged through another conduit 9 and the spiral exhaust pipe 8. The gas discharged from the combustion chamber 2 is at a high temperature. Under the action of the spiral exhaust pipe 8, it exchanges heat with the water in the heat exchange box 1, thereby recovering energy. After the water in the heat exchange box 1 is heated by the spiral exhaust pipe 8, the preheating box 10 is closed. The gas entering through the spiral intake pipe 7 is preheated by the hot water in the heat exchange box 1, thereby achieving a preheating energy-saving effect.

[0058] S2: When the water in the heat exchange box 1 is heated to boiling under the action of the spiral exhaust pipe 8, the boiling water produces water vapor, which pushes the piston plate 15 and the conversion box 69 upward. The conversion box 69 squeezes the gas in the pressure discharge cylinder 11, so that the gas in the pressure discharge cylinder 11 is injected into the corresponding drive box 51 through the connecting pipe 12. The gas pushes the drive plate 52 upward, and the drive plate 52 drives the pull rod 53 to move. The pull rod 53 controls the plug 55 to move up and down. When the plug 55 moves upward, the connecting hole 57 and the guide hole 56 are connected, so that the water inlet pipe 59 and the drain pipe 58 are connected to the outside, and the boiling water in the heat exchange box 1 is replaced, so that the heated water source can be collected, stored or used for other purposes. When the water temperature in the heat exchange box 1 drops, the piston plate 15 loses the upward pushing force, so that the piston plate 15 and the conversion box 69 return to the downward. At the same time, the plug 55 and the drive plate 52 also return to the downward under the action of gravity, so as to reseal the heat exchange box 1.

[0059] S3: When water vapor recovery is required, the drive shaft 66 is rotated. The drive shaft 66 meshes with the first bevel gear 67 and the second bevel gear 68, thereby driving the second bevel gear 68 to rotate. The second bevel gear 68 is connected to the piston tube 63 by sliding up and down, thereby driving the piston tube 63 to rotate laterally. The piston tube 63 drives the conversion box 69 to rotate, so that the mating hole 610 and the through hole 611 are connected to each other. This causes the water vapor in the heat exchange box 1 to be introduced into the conversion box 69 through the through hole 611 and the mating hole 610, and then flows into the control box 62 through the piston tube 63. At this time, the rotating control box 62 drives the steam guide hole 64 to connect with the steam exhaust pipe 65, so that the water vapor in the control box 62 is discharged through the steam exhaust pipe 65 and connected to an external collection device for collection and treatment.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated energy-saving device for RTO and waste heat recovery, comprising a heat exchange box (1), characterized in that, A combustion chamber (2) is installed on the top of the heat exchange box (1). A centrifugal fan (3) is installed on one side of the heat exchange box (1). A partition (4) is installed on the inner wall of the heat exchange box (1). A spiral air inlet pipe (7) and a spiral exhaust pipe (8) are installed on the inner wall of the heat exchange box (1). The spiral air inlet pipe (7) is connected to the centrifugal fan (3). A conduit (9) is installed at one end of both the spiral air inlet pipe (7) and the spiral exhaust pipe (8). The top end of the conduit (9) is connected to the combustion chamber (2). The other end of the spiral exhaust pipe (8) extends to the outside of the heat exchange box (1). A pressure discharge cylinder (11) is installed on the top of the partition (4). The automatic water exchange mechanism (5) includes an inlet pipe (59) and a drain pipe (58). The inlet pipe (59) is installed in the middle right side of the heat exchange box (1), and the drain pipe (58) is installed in the lower left side of the heat exchange box (1). Both the inlet pipe (59) and the drain pipe (58) are in cooperation with the pressure discharge cylinder (11). The high-temperature exhaust mechanism (6) includes an exhaust cylinder (61), which is fixedly installed on the top inner wall of the heat exchange box (1). An exhaust pipe (65) is installed on one side of the exhaust cylinder (61), and one end of the exhaust pipe (65) extends to the outside of the heat exchange box (1).

2. The integrated energy-saving equipment for RTO and waste heat recovery according to claim 1, characterized in that, The automatic water exchange mechanism (5) also includes two sealing boxes (54), which are fixedly installed on the inner walls of the heat exchange box (1) on both sides. The sealing boxes (54) are provided with guide holes (56), which are connected to the inlet pipe (59) and the drain pipe (58) respectively. A plug (55) is slidably connected to the inner wall of the sealing box (54), and a connection hole (57) is provided on the plug (55). The connection hole (57) and the guide hole (56) cooperate with each other.

3. The integrated energy-saving equipment for RTO and waste heat recovery according to claim 2, characterized in that, A piston plate (15) is slidably connected to the inner wall of the pressure discharge cylinder (11). A conversion box (69) is rotatably connected to the top of the piston plate (15). A piston tube (63) is fixedly installed on the top of the conversion box (69). Connecting pipes (12) are installed on both sides of the pressure discharge cylinder (11). A drive box (51) is fixedly installed on both sides of the inner wall of the heat exchange box (1). One end of the connecting pipe (12) is connected to the corresponding drive box (51).

4. The integrated energy-saving equipment for RTO and waste heat recovery according to claim 3, characterized in that, A drive plate (52) is slidably connected to the inner wall of the drive box (51), and a pull rod (53) is fixedly installed at the bottom of the drive plate (52). The pull rod (53) is fixedly connected to the corresponding plug (55).

5. The integrated energy-saving equipment for RTO and waste heat recovery according to claim 1, characterized in that, The high-temperature exhaust mechanism (6) also includes a control box (62), which is rotatably installed on the inner wall of the exhaust pipe (61). The control box (62) has a steam guide hole (64), which cooperates with the exhaust pipe (65).

6. The integrated energy-saving equipment for RTO and waste heat recovery according to claim 5, characterized in that, The piston plate (15) has a through hole (611) and the conversion box (69) has a mating hole (610). The through hole (611) and the mating hole (610) are mated to each other. Limiting grooves are opened on both sides of the pressure discharge cylinder (11). Limiting blocks are slidably connected to the inner wall of the limiting grooves. The limiting blocks are fixedly connected to the piston plate (15).

7. The integrated energy-saving equipment for RTO and waste heat recovery according to claim 6, characterized in that, The heat exchange box (1) is rotatably connected to a drive shaft (66) on one side. A first bevel gear (67) is fixedly installed at one end of the drive shaft (66). A second bevel gear (68) is slidably connected to the piston tube (63). The first bevel gear (67) and the second bevel gear (68) mesh with each other. A stabilizing box is movably connected to the piston tube (63). The stabilizing box is rotatably connected to the drive shaft (66). Both the first bevel gear (67) and the second bevel gear (68) are located inside the stabilizing box.

8. The integrated energy-saving equipment for RTO and waste heat recovery according to claim 1, characterized in that, A preheating box (10) is installed on the bottom inner wall of the heat exchange box (1), a spiral air inlet pipe (7) passes through the preheating box (10), and a controller (14) is fixedly installed on the outside of the combustion chamber (2), and the controller (14) is connected to the preheating box (10).

9. The integrated energy-saving equipment for RTO and waste heat recovery according to claim 1, characterized in that, The centrifugal fan (3) is equipped with a filter box (13), and the filter box (13) is provided with a secondary filter plate.

10. The method of using the integrated energy-saving equipment for RTO and waste heat recovery according to claims 1-9, characterized in that, Includes the following steps: S1: Waste gas is introduced into combustion treatment. The waste gas is injected through the centrifugal fan (3) and the spiral intake pipe (7). The spiral intake pipe (7) is injected into the combustion chamber (2) through the conduit (9) for combustion treatment. At the initial injection, the waste gas is preheated through the preheating box (10). After combustion treatment in the combustion chamber (2), the treated gas is discharged through another conduit (9) and the spiral exhaust pipe (8). The gas discharged from the combustion chamber (2) is in a high temperature state. Under the action of the spiral exhaust pipe (8), it exchanges heat with the water source in the heat exchange box (1) to recover energy. After the water source in the heat exchange box (1) is heated by the spiral exhaust pipe (8), the preheating box (10) is closed. The gas entering the spiral intake pipe (7) is preheated by the hot water in the heat exchange box (1) to form a preheating energy-saving effect. S2: When the water in the heat exchanger (1) is heated to boiling state by the spiral exhaust pipe (8), the boiling water produces water vapor, which pushes the piston plate (15) and the conversion box (69) upward. The conversion box (69) squeezes the gas in the pressure discharge cylinder (11), so that the gas in the pressure discharge cylinder (11) is injected into the corresponding drive box (51) through the connecting pipe (9). The gas pushes the drive plate (52) upward. The drive plate (52) drives the pull rod (53) to move. The pull rod (53) controls the plug (55) to move up and down. The plug (55) moves upward. When moving, the connecting hole (57) and the guide hole (56) are connected, so that the water inlet pipe (59) and the drain pipe (58) are connected to the outside, and the boiling water in the heat exchange box (1) is replaced, so that the heated water source can be collected, stored or used for other purposes. When the water temperature in the heat exchange box (1) drops, the piston plate (15) loses the upward pushing force, so that the piston plate (15) and the conversion box (69) are reset downward. At the same time, the plug (55) and the drive plate (52) are also reset downward under the action of gravity, so as to reseal the heat exchange box (1). S3: When water vapor recovery is required, rotate the drive shaft (66). The drive shaft (66) meshes with the first bevel gear (67) and the second bevel gear (68), thereby driving the second bevel gear (68) to rotate. The second bevel gear (68) slides up and down with the piston tube (63), thereby driving the piston tube (63) to rotate laterally. The piston tube (63) drives the conversion box (69) to rotate, so that the mating hole (610) and the through hole (61) are connected. 1) The interconnection causes the water vapor in the heat exchange box (1) to be introduced into the conversion box (69) through the through hole (611) and the mating hole (610), and then flow into the control box (62) through the piston tube (63). At this time, the rotating control box (62) drives the steam guide hole (64) and the exhaust pipe (65) to be interconnected, so that the water vapor in the control box (62) is discharged through the exhaust pipe (65) and is collected and processed by an external collection device connected through the exhaust pipe (65).

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