A RTO waste gas waste heat recycling device

Abstract

The present invention relates to the technical field of heat recovery devices, and in particular to an RTO waste gas waste heat recycling device. The present invention provides an RTO waste gas waste heat recycling device, including a frame, etc.; the frame is fixedly connected to a superheater, the frame is fixedly connected to an evaporator, the frame is fixedly connected to an economizer, the frame is fixedly connected to an air collecting ring, the air collecting ring is connected and fixedly connected to a circumferentially distributed air duct, the end of the air duct away from the air collecting ring is connected and fixedly connected to an air outlet plate, and both sides of the frame are fixedly connected to symmetrically distributed air ducts, one end of the air duct is connected to an adjacent air outlet plate, and the other ends of the air ducts on the same side are connected and fixedly connected to an air collecting plate. The present invention can concentrate part of the hot exhaust gas and heat the water vapor in the superheater through components such as the air outlet plate and the air collecting plate, and can also reflux and reuse part of the hot exhaust gas that has absorbed heat, thereby improving the heat recovery efficiency of the RTO waste gas waste heat recycling device.

Description

Technical Field

[0001] The present invention relates to the technical field of heat recovery devices, and in particular to an RTO waste gas waste heat recycling device. Background Art

[0002] RTO waste gas treatment equipment is an organic waste gas treatment equipment that heats the organic waste gas to above 760°C and undergoes an oxidation reaction at high temperature, so that the VOC in the waste gas is oxidized and decomposed into carbon dioxide and water. The high-temperature gas generated by oxidation flows through a special ceramic heat storage body, causing the ceramic body to heat up and store heat. This heat storage is used to preheat the subsequent organic waste gas. This saves fuel consumption for heating the waste gas. However, due to the high temperature in the combustion furnace, although part of the waste gas heat is recovered by the heat storage ceramic, the gas that is finally discharged from the furnace body still has a high temperature, and further heat recovery of the discharged waste gas is required.

[0003] In the patent with publication number CN214536236U, an RTO heat recovery and reuse device is disclosed, which belongs to the field of combustion heat recovery technology. Several layers of flat water bag boxes are evenly spaced inside the heat recovery treatment tank, and each flat water bag box is connected by a connecting pipe in the middle, and the outer sides of the flat water bag boxes at the upper and lower ends are connected to water inlet and outlet pipes; the flat water bag box is sealed and welded to the inner wall of the heat recovery treatment tank, and several independent hot exhaust gas flow chambers are formed between the two. The interior of the flat water bag box is respectively provided with straight heat exchange tubes and cross heat exchange tubes, and the straight heat exchange tubes and cross heat exchange tubes connect adjacent hot exhaust gas flow chambers; the top of the heat recovery treatment tank is connected to a pair of double The air inlet and the lower end of the heat recovery treatment tank are connected with an exhaust port; it uses a sealed water bag and cross heat conduction to reuse the exhaust gas after heat storage of the traditional RTO burner, and fully absorbs the waste heat in the exhaust gas; to avoid heat loss, but this heat recovery device only absorbs the waste heat in the exhaust gas by allowing the higher temperature exhaust gas to directly pass through multiple layers of heat exchange tubes, without blocking and guiding the exhaust gas, so that the exhaust gas residence time is short and the dispersion is uneven, and the liquid in the heat exchange tube cannot fully absorb the waste heat of the exhaust gas, resulting in a low overall heat recovery efficiency of the device.

[0004] Based on the above situation, the present invention proposes an RTO waste gas waste heat recycling device with high heat recovery efficiency. Summary of the invention

[0005] In order to overcome the shortcomings of the existing RTO heat recovery and reuse device that does not block and guide the exhaust gas, resulting in a short residence time of the exhaust gas and uneven dispersion, and the liquid in the heat exchange tube cannot fully absorb the waste heat of the exhaust gas, thereby resulting in a low overall heat recovery efficiency of the device, the present invention provides an RTO exhaust gas waste heat recovery device with high heat recovery efficiency.

[0006] A device for recycling waste heat from RTO exhaust gas comprises a frame, a superheater is fixedly connected to the frame, an evaporator is fixedly connected to the frame, the superheater and the evaporator are connected via a pipeline, an economizer is fixedly connected to the frame, the evaporator and the economizer are connected via a pipeline, and also comprises an air collecting ring, the air collecting ring is fixedly connected to the frame, the air collecting ring is connected and fixedly connected to circumferentially distributed air guide pipes, one end of the air guide pipe away from the air collecting ring is connected and fixedly connected to an air outlet plate, the air outlet of the air outlet plate faces the superheater, the frame is fixedly connected to an air distributor block, and the frame is provided with a circulation mechanism for recycling the hot exhaust gas.

[0007] As a further preferred scheme, the circulation mechanism includes symmetrically distributed air ducts, which are fixedly connected to both sides of the frame, one end of the air ducts is connected to the air outlet plate, the other ends of the air ducts on the same side are connected and fixedly connected to the air collecting plate, and an air pump is fixedly connected to the middle of the air ducts.

[0008] As a further preferred solution, the superheater, evaporator and economizer are all made of metallic copper.

[0009] As a further preferred embodiment, the gas distributor block is truncated cone-shaped.

[0010] As a further preferred solution, the rack and the air duct are made of high temperature resistant and heat insulating materials to reduce heat loss.

[0011] As a further preferred embodiment, a dispersion mechanism is also included to evenly disperse the hot exhaust gas. The dispersion mechanism is disposed on the frame and located between the superheater and the evaporator. The dispersion mechanism includes symmetrically distributed first rotating shafts, which are rotatably connected to both sides of the frame. A rotating frame is fixedly connected between the paired first rotating shafts. The rotating frame is fixedly connected with a plurality of groups of circumferentially distributed fins distributed longitudinally, and the rotating frame is provided with a plurality of ventilation holes.

[0012] As a further preferred scheme, it also includes a balancing mechanism for equalizing the exhaust gas temperature at various locations. The balancing mechanism is arranged on the frame and is located between the evaporator and the economizer. The balancing mechanism includes symmetrically distributed support plate frames, and the symmetrically distributed support plate frames are fixedly connected to both sides of the frame. Longitudinally distributed copper blocks are fixedly connected between pairs of support plate frames, and pairs of longitudinally distributed flow guides are opened inside the copper blocks. Pairs of axially distributed wind blocks are fixedly connected to the copper blocks, and the wind block blocks are located in the flow guides.

[0013] As a further preferred scheme, it also includes an obstruction mechanism for extending the residence time of hot exhaust gas, the obstruction mechanism is arranged on the frame, the obstruction mechanism includes symmetrically distributed second rotating shafts, the symmetrically distributed second rotating shafts are rotatably connected to both sides of the frame, the first support frame is fixedly connected to both sides of the frame, the second rotating shaft is fixedly connected to circumferentially distributed rotating blades, the end of the second rotating shaft away from the rotating blades is fixedly connected to a spur gear, the spur gears on the paired second rotating shafts are meshed with each other, the end of the second rotating shaft away from the rotating blades is fixedly connected to a card block, a plurality of hemispherical card grooves are opened on the card block, the first support frame is fixedly connected to a circumferentially distributed protective shell, the inside of the protective shell is slidably connected with a card bead, a spring is fixedly connected between the card bead and the protective shell, and the card bead and the card block are squeezed and fitted.

[0014] As a further preferred solution, it also includes a diffusion mechanism for expanding the flow range of hot exhaust gas. The diffusion mechanism is arranged on the frame, and the diffusion mechanism includes symmetrically distributed second support frames, which are fixed to both sides of the frame, and a disruptor frame is rotatably connected between the paired second support frames.

[0015] As a further preferred solution, the air pump, the rotating frame and the disturbance frame are all made of high temperature resistant materials.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention can concentrate part of the hot exhaust gas through components such as the air outlet plate and the air collecting plate, and heat the water vapor in the superheater to ensure that the saturated steam can be heated to superheated steam for use in the steam turbine or other work sections. At the same time, part of the hot exhaust gas that has absorbed heat can be refluxed and reused, thereby improving the heat recovery efficiency of the RTO exhaust gas waste heat recycling device.

[0017] 2. The present invention can guide and disperse the hot exhaust gas blown out of the exhaust plate through components such as a rotating frame and fins, slow down the flow rate of the exhaust gas, and at the same time make the exhaust gas more evenly dispersed between the superheater and the evaporator and evenly heat the hot water in the evaporator, thereby accelerating the evaporation efficiency of the hot water to provide more saturated steam for the superheater or other work sections, thereby improving the heat recovery efficiency of the RTO exhaust gas waste heat recycling device.

[0018] 3. The present invention uses components such as copper blocks and wind blocks to extend the residence time of hot exhaust gas while making the temperature of hot exhaust gas between the evaporator and the economizer relatively balanced and stable, so as to provide more sustained and uniform heating to various parts of the evaporator and the economizer. It can also quickly transfer heat through heat conduction, thereby improving the heat transfer rate and thus improving the heat recovery efficiency of the RTO exhaust gas waste heat recycling device.

[0019] 4. The present invention can prolong the residence time of hot exhaust gas in the frame through components such as rotating blades and beads, so that components such as superheaters, evaporators and economizers have more sufficient time to absorb more waste heat from the hot exhaust gas, thereby improving the heat recovery efficiency of the RTO waste heat recycling device.

[0020] 5. The present invention can make part of the hot exhaust gas diffuse evenly in the frame by using components such as the disturbance frame and the second support frame, and improve the heat absorption effect of the superheater by increasing the contact area between the superheater and the hot exhaust gas, thereby improving the heat recovery efficiency of the RTO exhaust gas waste heat recycling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of components such as the superheater, evaporator and economizer of the present invention.

[0023] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the frame, superheater, evaporator and other components of the present invention.

[0024] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the air guide pipe, air collecting plate, air guide pipe and other components of the present invention.

[0025] Figure 5 It is a partial cross-sectional three-dimensional structural schematic diagram of the air guide duct, air outlet plate, air distribution block and other components of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the gas collecting plate, air guide pipe, air outlet pipe and other components of the present invention.

[0027] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the superheater, rotating frame, first rotating shaft and other components of the present invention.

[0028] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the rotating frame, the first rotating shaft, the fins and other components of the present invention.

[0029] Fig. 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the economizer, support plate frame, copper block and other components of the present invention.

[0030] Fig.10 It is a schematic diagram of the cross-sectional three-dimensional structure of the copper block, flow guide channel, wind block and other components of the present invention.

[0031] Fig.11 It is a schematic diagram of the cross-sectional three-dimensional structure of the second rotating shaft, the first supporting frame, the rotating blades and other components of the present invention.

[0032] Fig.12It is a three-dimensional structural schematic diagram of the spur gear, protective housing, clamping block and other components of the present invention.

[0033] Fig.13 It is a schematic diagram of the cross-sectional three-dimensional structure of the clamping block, spring, clamping bead and other components of the present invention.

[0034] Fig.14 It is a schematic diagram of the three-dimensional structure of the protective shell, the card block, the card bead and other components of the present invention.

[0035] Fig.15 It is a schematic diagram of the cross-sectional three-dimensional structure of the disruptor frame, the second support frame, the superheater and other components of the present invention.

[0036] Fig.16 It is a schematic diagram of the three-dimensional structure of the disrupting frame, the second supporting frame and other components of the present invention.

[0037] Markings in the figure are: 1: frame, 11: superheater, 12: evaporator, 13: economizer, 14: air collecting ring, 15: air guide pipe, 16: air collecting plate, 17: air guide pipe, 1701: air pump, 18: air outlet plate, 19: air distributor block, 2: rotating frame, 21: first rotating shaft, 22: fin, 3: support plate frame, 31: copper block, 32: flow guide channel, 33: wind block, 4: second rotating shaft, 41: first supporting frame, 42: rotor blade, 43: spur gear, 44: protective shell, 45: block, 46: spring, 47: bead, 5: disturbance frame, 51: second supporting frame. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Example 1

[0040] A RTO waste gas waste heat recycling device, such as Figure 1-Figure 6As shown, it includes a frame 1, a superheater 11 is fixedly connected to the left middle part of the frame 1, an evaporator 12 is fixedly connected to the middle part of the frame 1, the superheater 11 and the evaporator 12 are connected through a pipeline, an economizer 13 is fixedly connected to the right middle part of the frame 1, the evaporator 12 and the economizer 13 are connected through a pipeline, an air collecting ring 14 is fixedly connected to the left inside of the frame 1, the outside of the air collecting ring 14 is connected and fixedly connected with a circumferentially distributed air guide pipe 15, the end of the air guide pipe 15 away from the air collecting ring 14 is connected and fixedly connected with an air outlet plate 18, the air outlet of the air outlet plate 18 faces the superheater 11, an air distributor block 19 is fixedly connected to the left inside of the frame 1, and a circulation mechanism for recycling the hot exhaust gas is provided on the frame 1.

[0041] like Figure 4-Figure 6 As shown, the circulation mechanism includes an air duct 17, and the front and rear sides of the frame 1 are fixedly connected with the air duct 17 which is symmetrically distributed up and down, one end of the air duct 17 which is symmetrically distributed up and down is connected with the adjacent air outlet plate 18, and the other ends of the air duct 17 which is symmetrically distributed up and down are connected and fixedly connected with the air collecting plate 16, and the middle part of the air duct 17 is fixedly connected with an air pump 1701.

[0042] like Figure 1-Figure 6 As shown, the superheater 11, the evaporator 12 and the economizer 13 are all made of metallic copper.

[0043] like Figure 5 and Figure 6 As shown, the gas distributor block 19 is truncated cone-shaped.

[0044] like Figure 1-Figure 6 As shown, the rack 1 and the air duct 17 are made of high temperature resistant and heat insulating materials to reduce heat loss.

[0045] When the hot exhaust gas from the RTO enters the frame 1 through the air inlet on the left, water also flows into the economizer 13 through external equipment, and is transported to the evaporator 12 through a pipeline after being heated by the exhaust gas. The saturated steam generated after further heating in the evaporator 12 will enter the superheater 11, and will eventually be heated by the exhaust gas in the superheater 11 to become superheated steam for use in the steam turbine or other work sections. Since the temperature of the exhaust gas gradually decreases after absorbing heat, the superheater 11, evaporator 12 and economizer 13 should be arranged from left to right in order to meet the heating requirements. The exhaust gas entering the frame 1 from the left will first be squeezed and diverted by the truncated cone-shaped gas distributor 19, and part of the exhaust gas will continue to move to the right through the gas collecting ring 14 and heat the middle part of the superheater 11, while most of the exhaust gas will be in the distributor. Under the guidance of the gas block 19, the gas enters the gas collecting ring 14, then enters the gas outlet plate 18 through the air duct 15, and is finally ejected from the gas outlet plate 18 directly facing the superheater 11, so as to concentrate part of the hot exhaust gas and heat the water vapor in the superheater 11 to ensure that the saturated steam can be heated to superheated steam. At the same time, since the hot exhaust gas discharged from the RTO is still about 700 degrees Celsius, it still has the temperature to heat the saturated steam to superheated steam after the triple heat absorption of the superheater 11, the evaporator 12 and the economizer 13. Therefore, the air pump 1701 can be started to suck part of the hot exhaust gas on the right side of the economizer 13 back to the gas outlet plate 18 through the air duct 17, so that the hot exhaust gas can reflux and absorb heat again, thereby improving the heat recovery efficiency of the RTO exhaust gas waste heat recycling device.

[0046] Example 2

[0047] On the basis of Example 1, Figure 7 and Figure 8 As shown, a dispersion mechanism for evenly dispersing the hot exhaust gas is also included. The dispersion mechanism is arranged on the frame 1 and is located between the superheater 11 and the evaporator 12. The dispersion mechanism includes a first rotating shaft 21. The upper and lower sides of the frame 1 are rotatably connected with the first rotating shafts 21 symmetrically distributed front and back. A rotating frame 2 is fixedly connected between the first rotating shafts 21 symmetrically distributed front and back. A plurality of groups of circumferentially distributed fins 22 distributed front and back longitudinally are fixedly connected to the outside of the rotating frame 2. A plurality of ventilation holes are opened on the rotating frame 2.

[0048] When the hot exhaust gas passes through the superheater 11 and continues to move to the right, a part of the hot exhaust gas will pass through the air holes of the rotating frame 2 and enter the interior of the rotating frame 2, while the other hot exhaust gas will pass through the surface of the rotating frame 2 and drive the rotating frame 2 to start rotating by blowing the fins 22, thereby throwing the exhaust gas inside the rotating frame 2 to the surroundings, so that the hot exhaust gas is more evenly dispersed between the superheater 11 and the evaporator 12, and the flow of the hot exhaust gas is delayed to a certain extent, so as to evenly heat the hot water in the evaporator 12 over a large area, accelerate the evaporation efficiency of the hot water, and improve the heat recovery efficiency of the RTO waste gas waste heat recycling device. At the same time, the exhaust gas used once and the refluxed exhaust gas can be evenly mixed to avoid uneven heating of the evaporator 12.

[0049] like Fig. 9 and Fig.10 As shown, it also includes a balancing mechanism for equalizing the exhaust gas temperature at various locations. The balancing mechanism is arranged on the frame 1 and is located between the evaporator 12 and the economizer 13. The balancing mechanism includes a support plate frame 3. The support plate frames 3 are fixedly connected to the front and rear sides of the frame 1. Copper blocks 31 distributed longitudinally up and down are fixedly connected between the pairs of support plate frames 3. Two groups of guide channels 32 distributed longitudinally front and back are opened inside the copper blocks 31. Two groups of axially distributed wind blocks 33 distributed longitudinally front and back are fixedly connected inside the copper blocks 31. The wind blocks 33 are located in the guide channels 32.

[0050] When the hot exhaust gas passes through the evaporator 12 and continues to move to the right, the exhaust gas will still be mixed and distributed unevenly, resulting in temperature differences in different parts of the exhaust gas. When the exhaust gas enters the copper block 31 through the guide channel 32, the copper block 31 will absorb the heat of the exhaust gas and maintain a relatively uniform temperature as a whole, thereby heating the exhaust gas with a lower temperature and absorbing heat from the exhaust gas with a higher temperature, thereby maintaining the temperature of the exhaust gas in each place in a relatively balanced state and uniformly heating the economizer 13. The copper block 31 is in contact with the evaporator 12 and the economizer 13 and can also directly transfer heat quickly through metal heat conduction to improve the heat conduction efficiency. The wind block 33 and the tortuous guide channel 32 can prolong the contact time between the exhaust gas and the copper block 31 and increase the contact area between the two, so as to increase the heat absorption of the copper block 31 and improve the heat recovery efficiency of the RTO exhaust gas waste heat recycling device.

[0051] like Figure 11-Figure 14As shown, it also includes an obstruction mechanism for extending the residence time of hot exhaust gas, which is arranged on the frame 1, and the obstruction mechanism includes a second rotating shaft 4. The second rotating shaft 4 is rotatably connected to the front and rear sides of the right part of the frame 1, and the first support frame 41 is fixedly connected to the front and rear sides of the top of the frame 1. Three circumferentially distributed rotating blades 42 are fixedly connected to the lower part of the second rotating shaft 4, and a spur gear 43 is fixedly connected to the end of the second rotating shaft 4 away from the rotating blade 42. The spur gears 43 on the two second rotating shafts 4 are meshed with each other. A clamping block 45 is fixedly connected to the end of the second rotating shaft 4 away from the rotating blade 42, and a plurality of hemispherical clamping grooves are opened on the clamping block 45. A circumferentially distributed protective shell 44 is fixedly connected to one side of the first support frame 41 close to the adjacent clamping block 45, and a clamping bead 47 is slidably connected inside the protective shell 44. A spring 46 is fixedly connected between the clamping bead 47 and the protective shell 44, and the clamping bead 47 is squeezed and matched with the adjacent clamping block 45.

[0052] When the exhaust gas passes through the economizer 13 and continues to move to the right, a part of the exhaust gas will be sucked away by the gas collecting plate 16 for secondary utilization, and the other exhaust gas will be blocked and can only be discharged outward through the square hole opened on the rotor blade 42. Since the square hole is small and insufficient to make the intake volume equal to the exhaust volume, the air pressure in the frame 1 will gradually increase, and the exhaust gas will exert pressure on the frame 1 and the rotor blade 42. When the air pressure rises to a certain level, the pressure exerted by the exhaust gas is large, which will drive the rotor blade 42 to rotate. The rotor blade 42 on the front side rotates clockwise, and the rotor blade 42 on the rear side rotates counterclockwise driven by the spur gear 43. At this time, the block 45 also rotates and squeezes the bead 47, causing the bead 47 to move toward the direction close to the inside of the protective shell 44. The spring 46 is then compressed, and a large amount of exhaust gas quickly passes through the gap between the two rotor blades 42, thereby reducing the air pressure inside the frame 1. When the rotor blade 42 and the block 45 are driven by the exhaust gas and rotated 120 degrees, the bead 47 will move in the opposite direction under the action of the spring 46 and enter the hemispherical groove of the block 45, thereby restricting the rotor blade 42 again. Only when the air pressure in the frame 1 rises to a certain level again will it drive the rotor blade 42 to rotate again. By analogy, the residence time of the hot exhaust gas in the frame 1 can be extended, so that the superheater 11, the evaporator 12 and the economizer 13 and other components have sufficient time to absorb more waste heat from the hot exhaust gas, thereby improving the heat recovery efficiency of the RTO exhaust gas waste heat recycling device.

[0053] like Fig.15 and 16 As shown, it also includes a diffusion mechanism for expanding the flow range of hot exhaust gas. The diffusion mechanism is arranged on the frame 1. The diffusion mechanism includes a second support frame 51. The second support frames 51 are fixedly connected to the upper and lower sides of the left part of the frame 1, and the pair of second support frames 51 are rotatably connected with a disrupting frame 5.

[0054] like Figure 1-Figure 16 As shown, the air pump 1701, the rotating frame 2 and the disturbance frame 5 are all made of high temperature resistant materials.

[0055] Since the cross-sectional area of ​​the air inlet of the frame 1 is smaller than the cross-sectional area of ​​the superheater 11, and the exhaust gas will not diffuse over a large range after passing through the collecting ring 14, the exhaust gas passing through the collecting ring 14 can only heat the middle part of the superheater 11. Therefore, a disturbance frame 5 is provided. When the exhaust gas passes through the disturbance frame 5, the disturbance frame 5 will be driven by the exhaust gas and start to rotate. The rotation of the disturbance frame 5 drives the exhaust gas to diffuse more evenly and move to the right inside the frame 1. In this way, the contact area between the superheater 11 and the hot exhaust gas is increased, and the heat absorption effect of the superheater 11 is improved, thereby improving the heat recovery efficiency of the RTO exhaust gas waste heat recycling device.

[0056] The technical principles of the embodiments of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be interpreted in any way as limiting the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the embodiments of the present invention without creative work, and these methods will fall within the protection scope of the embodiments of the present invention.

Claims

1. An RTO waste gas waste heat recycling device, comprising a frame (1), a superheater (11) fixedly connected to the frame (1), an evaporator (12) fixedly connected to the frame (1), the superheater (11) and the evaporator (12) being connected via a pipeline, an economizer (13) fixedly connected to the frame (1), the evaporator (12) and the economizer (13) being connected via a pipeline, characterized in that: It also includes an air collecting ring (14), the air collecting ring (14) is fixedly connected to the frame (1), the air collecting ring (14) is connected to and fixedly connected with a circumferentially distributed air guide pipe (15), one end of the air guide pipe (15) away from the air collecting ring (14) is connected to and fixedly connected with an air outlet plate (18), the air outlet of the air outlet plate (18) faces the superheater (11), the frame (1) is fixedly connected with an air distributor block (19), and the frame (1) is provided with a circulation mechanism for recycling the hot exhaust gas; The circulation mechanism comprises symmetrically distributed air guide pipes (17), the symmetrically distributed air guide pipes (17) are fixedly connected to both sides of the frame (1), one end of the air guide pipe (17) is connected to the air outlet plate (18), the other ends of the air guide pipes (17) on the same side are connected to and fixedly connected to the air collecting plate (16), and the middle of the air guide pipe (17) is fixedly connected to an air pump (1701); The invention also comprises a dispersion mechanism for uniformly dispersing the hot exhaust gas, the dispersion mechanism being arranged on the frame (1) and located between the superheater (11) and the evaporator (12), the dispersion mechanism comprising symmetrically distributed first rotating shafts (21), the symmetrically distributed first rotating shafts (21) being rotatably connected to both sides of the frame (1), a rotating frame (2) being fixedly connected between the pairs of first rotating shafts (21), the rotating frame (2) being fixedly connected with a plurality of groups of fins (22) distributed longitudinally and distributed circumferentially, and a plurality of ventilation holes being provided on the rotating frame (2); The machine also includes an obstruction mechanism for extending the residence time of the hot exhaust gas, the obstruction mechanism being arranged on the frame (1), the obstruction mechanism comprising symmetrically distributed second rotating shafts (4), the symmetrically distributed second rotating shafts (4) being rotatably connected to both sides of the frame (1), both sides of the frame (1) being fixedly connected to first support frames (41), the second rotating shafts (4) being fixedly connected to circumferentially distributed rotating blades (42), one end of the second rotating shaft (4) away from the rotating blades (42) being fixedly connected to a spur gear (43), and the paired second rotating shafts (41) being fixedly connected to the rotating blades (42). The spur gears (43) on the rotating shaft (4) are meshed with each other. A clamping block (45) is fixedly connected to one end of the second rotating shaft (4) away from the rotating blade (42). The clamping block (45) is provided with a plurality of hemispherical clamping grooves. The first support frame (41) is fixedly connected to a circumferentially distributed protective shell (44). A clamping bead (47) is slidably connected inside the protective shell (44). A spring (46) is fixedly connected between the clamping bead (47) and the protective shell (44). The clamping bead (47) and the clamping block (45) are pressed and matched. When the exhaust gas passes through the economizer (13) and continues to move to the right, a portion of the exhaust gas will be sucked away by the gas collecting plate (16) for secondary use, while the rest of the exhaust gas will be blocked and can only be discharged outward through the square hole opened on the rotor blade (42). Since the square hole is small and insufficient to make the intake volume equal to the exhaust volume, the air pressure in the frame (1) will gradually increase, and the exhaust gas will exert pressure on the frame (1) and the rotor blade (42). When the air pressure rises to a certain level, the pressure exerted by the exhaust gas is large, which will drive the rotor blade (42) to rotate. The rotor blade (42) on the front side rotates clockwise, and the rotor blade (42) on the rear side rotates clockwise. The spur gear (43) rotates counterclockwise, and the block (45) also rotates and squeezes the bead (47), so that the bead (47) moves toward the inside of the protective shell (44). The spring (46) is compressed, and a large amount of exhaust gas quickly passes through the gap between the two rotor blades (42), thereby reducing the air pressure inside the frame (1). When the rotor blade (42) and the block (45) are driven by the exhaust gas and rotate 120 degrees, the bead (47) moves in the opposite direction under the action of the spring (46) and enters the hemispherical groove of the block (45), thereby restricting the rotor blade (42) again.

2. The RTO waste gas waste heat recycling device according to claim 1, characterized in that: The superheater (11), the evaporator (12) and the economizer (13) are all made of metallic copper.

3. The RTO waste gas waste heat recycling device according to claim 2, characterized in that: The gas distribution block (19) is in the shape of a truncated cone.

4. The RTO waste gas waste heat recycling device according to claim 3, characterized in that: The frame (1) and the air guide duct (17) are made of high temperature resistant heat insulating material.

5. The RTO waste gas waste heat recycling device according to claim 4, characterized in that: The invention also includes a balancing mechanism for balancing the exhaust gas temperature at various locations. The balancing mechanism is arranged on the frame (1) and is located between the evaporator (12) and the economizer (13). The balancing mechanism includes symmetrically distributed support plate frames (3). The symmetrically distributed support plate frames (3) are fixedly connected to both sides of the frame (1). Longitudinally distributed copper blocks (31) are fixedly connected between the paired support plate frames (3). Pairs of longitudinally distributed flow guides (32) are provided inside the copper blocks (31). Pairs of axially distributed wind blocks (33) are fixedly connected to the copper blocks (31). The wind blocks (33) are located inside the flow guides (32).

6. The RTO waste gas waste heat recycling device according to claim 5, characterized in that: It also includes a diffusion mechanism for expanding the circulation range of the hot exhaust gas, the diffusion mechanism being arranged on the frame (1), the diffusion mechanism including symmetrically distributed second support frames (51), the symmetrically distributed second support frames (51) being fixedly connected to both sides of the frame (1), and a disturbance frame (5) being rotatably connected between the paired second support frames (51).

7. The RTO waste gas waste heat recycling device according to claim 6, characterized in that: The air pump (1701), the rotating frame (2) and the disturbance frame (5) are all made of high temperature resistant materials.

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