RTO lower chamber body structure

Abstract

This invention belongs to the technical field of RTO (Regenerative Thermal Oxidizer) furnaces, specifically an RTO lower chamber structure, including a support frame. An upper chamber is positioned above the support frame, and three lower chamber shells are fixedly connected to the upper chamber. Each lower chamber shell is made of fiberglass. Each lower chamber shell contains a purging component and a cooling / cleaning component. Two sets of vents are located at each end of each lower chamber shell. Connecting pipes are fixedly connected between adjacent lower chamber shells. A partition is fixedly connected above the vents in each lower chamber shell, dividing the interior of each lower chamber shell into an upper chamber and a lower chamber. A push valve component for switching the airflow conduction state is symmetrically distributed within each lower chamber shell. The use of fiberglass effectively resists corrosion in the lower chamber, while the cooling / cleaning component effectively prevents heat deformation of the lower chamber and removes organic acids from the lower chamber.

Description

Technical Field

[0001] This invention belongs to the technical field of RTO regenerative oxidation furnace, specifically an RTO lower chamber structure. Background Technology

[0002] Regenerative Thermal Oxidizer (RTO) is a mature and stable end-of-pipe treatment technology for VOCs (volatile organic compounds). It can pass harmful waste gases containing VOCs generated in industrial production into a ceramic regenerator, where they are converted into harmless compounds such as carbon dioxide and water at high temperatures, thus achieving harmless emissions. RTO has an extremely high removal rate of VOCs, typically reaching 98%-99%, and also has good heat recovery and utilization. That is, when the concentration of VOCs reaches a certain value, the heat released by its oxidation in the ceramic regenerator can basically sustain the operation of the equipment, thereby saving the energy consumption required for heating. Furthermore, by setting up a multi-chamber RTO, the working state can be switched through the lower chamber of the RTO, allowing each chamber to work in a cycle and cooperate with the purging action, resulting in a more uniform and stable treatment of VOCs.

[0003] In practical applications, the lower chamber of an RTO is typically made of cast iron. However, in chemical and pharmaceutical applications, the VOCs treated by the RTO often contain highly corrosive organic acids, which can easily corrode the lower chamber, which is in direct contact with the VOCs. If the lower chamber is made of corrosion-resistant materials such as stainless steel or aluminum alloy, the cost would be high. Furthermore, the high temperature in the upper chamber of the RTO will be conducted to the lower chamber through thermal radiation. In this high-temperature environment, materials such as stainless steel may react with the organic acids, leading to corrosion and perforation of the lower chamber.

[0004] If the lower chamber is made of fiberglass, the highly chemically stable fiberglass lower chamber can effectively resist the corrosion of organic acids even in high-temperature environments. Moreover, the structural strength of fiberglass is not inferior to that of metal materials. Fiberglass lower chambers have good mechanical properties, and the production process of fiberglass is relatively mature, allowing it to be made into complex shapes. Compared with other corrosion-resistant non-metallic materials, it has obvious processing and cost advantages, making it suitable as a material for RTO lower chambers.

[0005] However, fiberglass has poor heat resistance and is prone to deformation in high-temperature environments. If deformation occurs at the valve ring of the push valve in the lower chamber of the RTO, it can lead to an ineffective seal between the valve plate and the valve ring, resulting in VOCs leakage and affecting normal operation. Furthermore, the inlet temperature of VOCs is 20℃ to 30℃, while the temperature of the part of the lower chamber of the RTO near the upper chamber can reach hundreds of degrees Celsius. Therefore, the fiberglass lower chamber is prone to local cracks due to uneven temperature distribution, leading to VOCs leakage.

[0006] Furthermore, after long-term use in a corrosive environment, organic acidic substances tend to accumulate on the inner wall of the RTO lower chamber. If manual disassembly and cleaning are used, it is not only time-consuming and laborious, affecting work efficiency, but also poses a threat to the health of operators. At the same time, the organic acidic substances are directly exposed to the outside environment during the cleaning process, which will cause serious pollution to the atmospheric and soil environment. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention addresses the technical problem by using fiberglass reinforced plastic (FRP) for all structural components of the lower chamber. This provides the lower chamber with excellent corrosion resistance, completely preventing corrosion and perforation caused by the reaction of the lower chamber with organic acids at high temperatures in highly corrosive environments such as pharmaceuticals and chemicals. Furthermore, the inclusion of a water guide pipe allows water to absorb heat emitted by the upper ceramic regenerator, protecting the lower chamber shell and other FRP structures. This prevents the high temperature of the ceramic regenerator from being conducted to the lower chamber shell via thermal radiation, thus avoiding thermal deformation. The ceramic sleeve further shields and reflects thermal radiation, further enhancing the protection of the lower chamber shell and other structural components. The structure provides excellent protection, and the staggered water pipes and ceramic sleeves can achieve better thermal shielding without affecting the normal passage of harmful exhaust gases. By setting nozzles, clean water can be sprayed simultaneously onto the inner wall of the lower chamber shell during the purging operation, thereby automatically cleaning the organic acid substances attached to the inner wall of the lower chamber shell. This can replace manual cleaning and avoid the health threats to workers caused by manual cleaning. At the same time, the nozzles can further cool down the lower chamber shell shell when spraying clean water. By setting a second switch valve and a drain pipe, excess wastewater mixed with organic acid substances during water spraying can be collected along the partition towards the center and then collected centrally through the drain pipe, preventing organic acid substances from being directly exposed to the atmosphere or flowing directly into the ground and causing environmental pollution.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a chamber structure for an RTO, comprising:

[0009] The bracket has an upper chamber on top, and three lower chamber shells are fixedly connected to the upper chamber. Each lower chamber shell is made of fiberglass, and each lower chamber shell is equipped with a purging component and a cooling and cleaning component.

[0010] Each of the lower chamber shells has two sets of vents at both ends. A connecting pipe for connecting the vents is fixedly connected between two adjacent lower chamber shells. An air intake channel and an exhaust channel are formed between the vents and the connecting pipe on the same side. A sealing end cap is fixedly and sealed at one end of the air intake channel and the exhaust channel.

[0011] Each of the lower chamber shells has a partition fixedly connected above the vent, which divides the interior of each lower chamber shell into an upper chamber and a lower chamber. Each of the lower chamber shells has a push valve component symmetrically distributed inside for switching the airflow conduction state.

[0012] Furthermore, both the connecting pipe and the partition are made of fiberglass, and a heat-insulating gasket is provided between each connecting pipe and the vent.

[0013] Furthermore, the purging component includes an air supply pipe, an air supply pipe is provided below the lower chamber shell, and a purging pipe is connected above the air supply pipe at one end of each lower chamber shell. The top end of each purging pipe passes through the corresponding lower chamber shell and communicates with the upper chamber of the lower chamber shell. A first switching valve is fixedly connected between each purging pipe and the air supply pipe.

[0014] Furthermore, the cooling and cleaning component includes water guide pipes. A set of water guide pipes is evenly and alternately arranged inside each lower chamber shell near the upper chamber. The ends of each set of water guide pipes passing through the lower chamber shell are connected end to end in sequence through multiple bend joints. The water in the water guide pipes flows through each water guide pipe in an S-shaped meandering manner.

[0015] Furthermore, each set of water guide pipes is fixedly connected to a three-way switching valve at the end of the water flow direction. One end of each three-way switching valve is connected to a spray pipe surrounding the outer side of the lower chamber shell. Multiple inward grooves are evenly distributed on the outer side of each lower chamber shell. A nozzle pointing towards the inner wall of the lower chamber shell is fixedly connected in each groove. Each nozzle is connected to the corresponding spray pipe.

[0016] Furthermore, each of the nozzles is made of ceramic material, and each of the water guide pipes is fitted with a ceramic sleeve on the outside.

[0017] Furthermore, a water tank is provided on the outside of the bracket, and a return water pipe is connected above the water tank. The return water pipe is connected to the other end of the outlet of each three-way switching valve. Three water pumps are connected to one end of the water tank. A water injection pipe is fixedly connected to the drain end of each water pump. Each water injection pipe is connected to the initial end of the water flow direction of a corresponding set of water guide pipes.

[0018] Furthermore, each of the partitions is V-shaped and converges at the center with an inclination. The push valve component includes a valve plate and a valve ring. The valve ring is fixedly connected to the partition. The valve plate can abut against the bottom side of the valve ring. A conical cap that can extend into the inner ring of the valve ring is fixedly connected above the valve plate.

[0019] Furthermore, a second switching valve is fixedly connected to the bottom side of each lower chamber shell at the lowest position of the partition plate. Each second switching valve is connected to the upper chamber of the lower chamber shell, and a drain pipe is connected between the bottom ends of each second switching valve.

[0020] Furthermore, each of the lower chamber shells has two sets of inspection ports on both sides, each set of inspection ports is connected to the upper chamber and the lower chamber of the lower chamber shell, and each inspection port is fixedly connected to an inspection end cap. A temperature sensor is provided on one side of each lower chamber shell.

[0021] In summary, compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] (1) By setting all structural components of the lower chamber to be made of fiberglass, the lower chamber in this scheme can obtain excellent corrosion resistance, thereby completely avoiding the problem of corrosion perforation caused by the reaction of the lower chamber with organic acidic substances at high temperature when the RTO regenerative oxidizer is used in highly corrosive scenarios such as pharmaceuticals and chemicals.

[0023] (2) By setting up a water guide pipe, the water can absorb the heat emitted by the ceramic heat storage body above when it flows through the water guide pipe, thereby protecting the lower chamber shell and the rest of the fiberglass structure below, and preventing the high temperature of the ceramic heat storage body from being conducted to the lower chamber shell through heat radiation, causing it to deform thermally, which would make it difficult for the valve to seal effectively and affect normal operation.

[0024] (3) By setting up ceramic sleeves, the reflective heat radiation can be shielded, further improving the protection of the lower chamber shell and other structures. The staggered water pipes and ceramic sleeves can achieve better heat shielding without affecting the normal passage of harmful exhaust gas.

[0025] (4) By setting up a nozzle, when in the purging working state, it can spray clean water on the inner wall of the lower chamber shell at the same time, thereby automatically cleaning the organic acidic substances attached to the inner wall of the lower chamber shell. This can replace manual cleaning and avoid the problem of manual cleaning threatening the health of workers. At the same time, when the nozzle sprays clean water on the inner wall of the lower chamber shell, it can further cool down the lower chamber shell.

[0026] (5) By setting a second switch valve and a drain pipe, the excess wastewater mixed with organic acid substances during water spraying can be collected along the partition towards the center and collected centrally through the drain pipe, thus avoiding the organic acid substances from being directly exposed to the atmosphere or flowing directly into the ground and causing environmental pollution. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the present patent.

[0028] Figure 2 This is a front view of the patent.

[0029] Figure 3 Figure 2 A magnified view of a section at point C.

[0030] Figure 4 for Figure 2 A three-dimensional sectional view at point AA.

[0031] Figure 5 for Figure 4 A magnified view of a section at point D.

[0032] Figure 6 This is a three-dimensional schematic diagram from another perspective of this patent.

[0033] Figure 7 This is a side view of the present patent.

[0034] Figure 8 for Figure 7 A three-dimensional sectional view at point BB.

[0035] Figure 9 for Figure 8 A magnified view of a section at point E in the middle.

[0036] Figure 10 This is a schematic diagram of the internal structure of the lower chamber.

[0037] Explanation of reference numerals in the attached drawings: 10; upper chamber 11; upper chamber shell 12; insulation layer 13; ceramic heat storage body 14; lower chamber shell 15; vent 16; connecting pipe 17; insulation gasket 18; sealing end cap 19; inspection port 20; inspection end cap 21; partition 22; drain pipe 23; push valve assembly 24; valve plate 25; cone cap 26; valve ring 27; water guide pipe 28; ceramic sleeve 29; elbow joint 30; three-way switching valve 31; return water pipe 32; water injection pipe 33; water pump 34; water tank 35; spray pipe 36; groove 37; nozzle 38; purge pipe 39; first switching valve 40; air supply pipe 41; temperature sensor 42; second switching valve 43. Detailed Implementation

[0038] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Example

[0039] like Figure 1 As shown in Figure 10, an RTO lower chamber structure includes a support 10. An upper chamber 11 is fixedly connected above the support 10. The upper chamber 11 includes an upper chamber shell 12 and a heat insulation layer 13. The upper chamber shell 12 completely covers the heat insulation layer 13. The bottom of the heat insulation layer 13 is divided into three catalytic chambers, each of which is equipped with a ceramic heat storage element 14. Three lower chamber shells 15 are fixedly connected below the upper chamber 11. Each lower chamber shell 15 communicates with one catalytic chamber, and each lower chamber shell 15 has two... A group of vents 16 are provided. A connecting pipe 17 for connecting the vents 16 is fixedly connected between two adjacent lower chamber shells 15. An air intake passage and an exhaust passage are formed between the vents 16 and the connecting pipe 17 on the same side. A sealing end cap 19 is fixedly and sealed to one end of the air intake passage and the exhaust passage. A push valve component 24 for switching the airflow conduction state is symmetrically distributed in each lower chamber shell 15. A partition 22 is provided in each lower chamber shell 15, which divides the lower chamber shell 15 into an upper chamber and a lower chamber.

[0040] like Figure 1 As shown in Figure 10, the lower chamber shell 15, connecting pipe 17, sealing end cap 19, and partition 22 are made of fiberglass. A heat insulation gasket 18 is provided between each connecting pipe 17 and the vent 16. An air supply pipe 41 is provided below the lower chamber shell 15. A purge pipe 39 is connected to one end of each lower chamber shell 15 above the air supply pipe 41. The top end of each purge pipe 39 is inserted into the corresponding lower chamber shell 15 and communicates with the upper chamber of the lower chamber shell 15. A first switching valve 40 is fixedly connected between each purge pipe 39 and the air supply pipe 41.

[0041] By setting up an upper chamber 11 and a lower chamber shell 15 corresponding to the number of catalytic chambers in the upper chamber 11, and cooperating with the push valve component 24 to periodically switch the airflow conduction path, a basic configuration of a three-chamber RTO regenerative oxidizer is formed. This allows each ceramic heat storage body 14 to work alternately, resulting in a more uniform and stable treatment of VOCs. Furthermore, by setting up a purge pipe 39 in conjunction with the switching action of the push valve component 24, untreated waste gas is prevented from short-circuiting and escaping at the moment of valve switching, thereby further improving the purification efficiency of the RTO regenerative oxidizer.

[0042] By making all structural components of the lower chamber from fiberglass, the lower chamber in this design achieves excellent corrosion resistance, thus completely avoiding the problem of corrosion and perforation caused by the reaction of the lower chamber with organic acidic substances at high temperatures when used in highly corrosive environments such as pharmaceuticals and chemicals.

[0043] like Figure 1 As shown in Figure 10, a set of water guide pipes 28 are evenly and alternately arranged inside each lower chamber shell 15 near the upper chamber 11. The ends of each set of water guide pipes 28 passing through the lower chamber shell 15 are connected end to end by multiple bend joints 30. The water flow in the water guide pipes 28 meanders in an S-shape through each water guide pipe 28. Each water guide pipe 28 is fitted with a ceramic sleeve 29 on the outside.

[0044] By setting up the water guide pipe 28, the water flow can absorb the heat emitted by the upper ceramic heat storage body 14 when it flows through the water guide pipe 28, thereby protecting the lower chamber shell 15 and the rest of the fiberglass structure. This prevents the high temperature of the ceramic heat storage body 14 from being conducted to the lower chamber shell 15 through thermal radiation, causing it to deform. Furthermore, when harmful waste gas flows downward through the water guide pipe 28, the water flow in the water guide pipe 28 can absorb the residual heat in the airflow, thereby preventing the airflow carrying high heat from directly acting on the lower chamber shell 15 and causing it to deform.

[0045] Furthermore, by setting the ceramic sleeve 29, it can shield and reflect heat radiation, further improving the protection effect on the lower chamber shell 15 and other structures. The staggered arrangement of the water guide pipes 28 and the ceramic sleeve 29 can achieve a better heat shielding effect without affecting the normal passage of harmful exhaust gas. At the same time, the ceramic sleeve 29 has good corrosion resistance, which can protect the water guide pipes 28 and prevent them from being oxidized and corroded in a highly corrosive environment.

[0046] like Figure 1As shown in Figure 10, each set of water guide pipes 28 is fixedly connected to a three-way switching valve 31 at the end of the water flow direction. One end of each three-way switching valve 31 is connected to a spray pipe 36 surrounding the outer side of the lower chamber shell 15. Multiple inward grooves 37 are evenly distributed on the outer side of each lower chamber shell 15. A nozzle 38 pointing towards the inner wall of the lower chamber shell 15 is fixedly connected in each groove 37. Each nozzle 38 is connected to the corresponding spray pipe 36. Each nozzle 38 is made of ceramic material.

[0047] By setting the nozzle 38, clean water can be sprayed simultaneously onto the inner wall of the lower chamber shell 15 during the purging operation, thereby automatically cleaning the organic acidic substances attached to the inner wall of the lower chamber shell 15. This can replace manual cleaning and avoid the health threats to workers caused by manual cleaning. At the same time, the nozzle 38 spraying clean water onto the inner wall of the lower chamber shell 15 can further cool the lower chamber shell 15.

[0048] The groove 37 allows the nozzle 38 to be pointed at the inner wall of the lower chamber shell 15 without compromising the airtightness and integrity of the lower chamber shell 15. This enables the water jet from the nozzle 38 to act more directly on the inner wall of the lower chamber shell 15, ensuring the cleaning effect on organic acids on the inner wall of the lower chamber shell 15. The ceramic nozzle 38 can withstand the highly corrosive environment inside the lower chamber shell 15, ensuring the stability of the water spray cleaning operation.

[0049] Furthermore, since the water sprayed from nozzle 38 is warm water that has absorbed heat after flowing through water pipe 28, when the water initially comes into contact with the inner wall of the lower chamber shell 15, the contact between the warm water and the inner wall of the lower chamber shell 15 will not cause cracks or other problems due to sudden temperature changes. A portion of the water sprayed from nozzle 38 evaporates and absorbs heat under the action of the purge pipe 39. Since the catalytic reaction in the ceramic heat storage body 14 will produce water, the water vapor that evaporates in the lower chamber shell 15 and rises into the ceramic heat storage body 14 will not affect the normal operation of the catalytic reaction.

[0050] like Figure 1As shown in Figure 10, a water tank 35 is installed on the outside of the support 10. A return water pipe 32 is connected to the top of the water tank 35. The return water pipe 32 is connected to the outlet of the other end of each three-way switching valve 31. Three water pumps 34 are connected to one end of the water tank 35. The drain end of each water pump 34 is fixedly connected to a water injection pipe 33. Each water injection pipe 33 is connected to the initial end of the water flow direction of a corresponding set of water guide pipes 28. Each partition 22 is V-shaped and converges at the center, pushing horizontally. The valve component 24 includes a valve plate 25 and a valve ring 27. The valve ring 27 is fixedly connected to the partition plate 22. The valve plate 25 can abut against the bottom side of the valve ring 27. A cone cap 26 that can extend into the inner ring of the valve ring 27 is fixedly connected above the valve plate 25. A second switching valve 43 is fixedly connected to the bottom side of each lower chamber shell 15 at the lowest position of the partition plate 22. Each second switching valve 43 communicates with the upper chamber of the lower chamber shell 15. A drain pipe 23 is connected between the bottom ends of each second switching valve 43.

[0051] A water tank 35 is set up to store clean water for cooling and cleaning. Each water pump 34 operates independently to provide water flow to each set of water pipes 28. The three-way switching valves 31 can be switched according to the working state of each lower chamber. When the lower chamber is in the air intake or exhaust state, the three-way switching valve 31 opens the return water pipe 32 so that the water in the water pipe 28 flows back to the water tank 35. When the lower chamber is in the purging state, the three-way switching valve 31 opens the spray water pipe 36 to spray water for cleaning and cooling.

[0052] By setting a second switch valve 43 and a drain pipe 23, excess wastewater mixed with organic acidic substances during water spraying can be collected along the partition 22 towards the center and then collected centrally through the drain pipe 23, thus preventing organic acidic substances from being directly exposed to the atmosphere or flowing directly into the ground and causing environmental pollution.

[0053] By setting the cone cap 26, sewage can be prevented from remaining near the valve ring 27, and sewage can be smoothly discharged to the center of the baffle 22. At the same time, the cone cap 26 can reduce the direct contact between sewage mixed with organic acid substances and the valve plate 25, thereby preventing the valve plate 25 from being corroded by organic acid.

[0054] In this embodiment, initially, the device is connected to the power supply and control system. The upper chamber 11 is heated to the specified working temperature. The water tank 35 contains a sufficient amount of clean water. The water pump 34 continuously pumps the clean water in the water tank 35 through each water injection pipe 33 to each group of water guide pipes 28. The water flows meanderingly from each group of water guide pipes 28 to absorb the heat emitted by the ceramic heat storage body 14. Furthermore, due to the staggered arrangement of the water guide pipes 28 and the ceramic sleeve 29 shielding the heat radiation from above, it plays a role in cooling and protecting the fiberglass structure such as the lower chamber shell 15.

[0055] During operation, the three lower chambers are in the intake, exhaust, and purging states, respectively. In the intake state, the push valve component 24 in the intake passage of the lower chamber shell 15 is open while the push valve component 24 in the exhaust passage is closed. In the exhaust state, the push valve component 24 in the intake passage of the lower chamber shell 15 is closed while the push valve component 24 in the exhaust passage is open. In the purging state, both push valve components 24 in the lower chamber shell 15 are closed. By switching the opening and closing states of each push valve component 24, the working states of the three lower chambers are periodically switched.

[0056] When the three-way switching valve 31 in the lower chamber is in the intake and exhaust states, it connects to the return water pipe 32, which causes the water in the water guide pipe 28 to flow back to the water tank 35 for circulation. At this time, the VOCs harmful exhaust gas enters the lower chamber shell 15 through the intake channel and flows upward until it enters the upper chamber 11 to undergo a catalytic reaction and be transformed into harmless gas and water vapor. Then, the harmless gas flows into the lower chamber in the exhaust state, passes through the water guide pipe 28 and the ceramic sleeve 29, is heated again, and finally enters the exhaust channel for discharge.

[0057] The three-way switching valve 31 in the lower chamber, which is in the purging state, is connected to the water spray pipe 36. The first switch valve 40 corresponding to the lower chamber is open while the other first switch valves 40 are closed. Air is continuously blown into the lower chamber shell 15 in the purging state through the purge pipe 39 to purge the residual VOCs exhaust gas inside the lower chamber shell 15. At the same time, each nozzle 38 corresponding to the lower chamber sprays clean water onto the inner wall of the lower chamber shell 15. The clean water is used to flush and clean the residual organic acid substances on the inner wall of the lower chamber shell 15. Meanwhile, some of the water evaporates under the purge of the purge pipe 39.

[0058] Since both push valve components 24 in the lower chamber are closed at this time, the sewage mixed with organic acidic substances can only flow downwards along the conical surface of the cone cap 26 and the slope of the baffle 22 and converge towards the center. Meanwhile, the second switch valve 43 corresponding to the lower chamber is open while the other second switch valves 43 are closed, so the sewage falls into the sewage pipe 23 for centralized collection and discharge, thus avoiding sewage pollution of the atmosphere and soil environment.

[0059] Each three-way switching valve 31, the first switching valve 40, and the second switching valve 43 switch synchronously with the switching action of the push valve component 24 to change the working state of each lower chamber. Since each lower chamber switches its working state periodically, each lower chamber can dissipate heat and cool down sufficiently, avoiding the problem of continuous temperature accumulation on the lower chamber shell 15 leading to thermal deformation. Example

[0060] like Figure 1As shown in Figure 10, each lower chamber shell 15 has two sets of inspection ports 20 on both sides. Each set of inspection ports 20 is connected to the upper chamber and the lower chamber of the lower chamber shell 15, respectively. Each inspection port 20 is fixedly connected to an inspection end cover 21 at its end. Each lower chamber shell 15 is fixedly connected to a temperature sensor 42 on one side. One end of the temperature sensor 42 extends into the lower chamber shell 15, and the temperature sensor 42 is connected to the control system.

[0061] In this embodiment, by setting up the inspection port 20 and the inspection end cover 21, it is convenient to inspect and maintain the structure inside the lower chamber shell 15. By setting up the temperature sensor 42, the internal temperature of the lower chamber shell 15 can be monitored in real time. If under extreme high temperature weather conditions, or if equipment such as the water pump 34 fails and it is difficult to cool down the lower chamber shell 15, the high temperature inside the lower chamber shell 15 is difficult to dissipate completely within one working cycle, resulting in the continuous accumulation of heat inside the lower chamber shell 15.

[0062] When the temperature sensor 42 detects that the temperature inside the lower chamber housing 15 has reached a level sufficient to deform the lower chamber housing 15, it controls all push valve components 24 to switch to the closed state, stops the catalytic treatment, and controls all first switch valves 40 to open, purging the lower chamber housing 15 to reduce its temperature, thereby protecting the equipment from further damage and irreparable loss.

[0063] The aforementioned push valve component 24, three-way switching valve 31, water pump 34, first switching valve 40, temperature sensor 42, and second switching valve 43 are mature existing technologies. The structures in the attached drawings are only for illustration and will not be described in detail here.

[0064] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0065] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0066] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. An RTO lower chamber body structure, characterized by, The RTO lower chamber structure includes: A support (10) is provided above the support (10), and an upper chamber (11) is provided above the upper chamber (11). Three lower chamber shells (15) are fixedly connected to the upper chamber (11). Each lower chamber shell (15) is made of fiberglass. Each lower chamber shell (15) is provided with a blowing component and a cooling cleaning component. Each of the lower chamber shells (15) is provided with two sets of vents (16) at both ends. A connecting pipe (17) for connecting the vents (16) is fixedly connected between two adjacent lower chamber shells (15). An air intake channel and an exhaust channel are formed between the vents (16) and the connecting pipe (17) on the same side. A sealing end cap (19) is fixedly and sealed at one end of the air intake channel and the exhaust channel. Among them, each of the lower chamber shells (15) is provided with a partition (22) above the vent (16) to divide its interior into upper and lower chambers, and each of the lower chamber shells (15) is provided with a push valve component (24) for switching the airflow conduction state symmetrically distributed; The purging component includes an air supply pipe (41), and the air supply pipe (41) is provided with a purging pipe (39) that communicates with the upper chamber of each lower chamber shell (15); a first switching valve (40) is provided between the purging pipe (39) and the air supply pipe (41). The cooling and cleaning component includes water guide pipes (28). Each lower chamber shell (15) has a set of water guide pipes (28) arranged alternately at a position near the upper chamber (11). The ends of each set of water guide pipes (28) passing through the lower chamber shell (15) are connected end to end in sequence by multiple bend joints (30). The water in the water guide pipes (28) flows in an S-shape through each water guide pipe (28).

2. The RTO lower chamber body structure according to claim 1, characterized by, Both the connecting pipe (17) and the partition (22) are made of fiberglass, and a heat insulation gasket (18) is provided between each connecting pipe (17) and the vent (16).

3. The RTO lower chamber body structure according to claim 1, wherein Each set of water guide pipes (28) is fixedly connected to a three-way switching valve (31) at its outlet. One end of each three-way switching valve (31) is connected to a water spray pipe (36) surrounding the outer side of the lower chamber shell (15). Multiple inward grooves (37) are evenly distributed on the outer side of each lower chamber shell (15). A nozzle (38) pointing towards the inner wall of the lower chamber shell (15) is fixedly connected in each groove (37). Each nozzle (38) is connected to the corresponding water spray pipe (36).

4. The RTO lower chamber body structure according to claim 3, wherein Each of the nozzles (38) is made of ceramic material, and each of the water guide tubes (28) is fitted with a ceramic sleeve (29) on the outside.

5. The RTO lower chamber body structure according to claim 4, wherein The support (10) has a water tank (35) on the outside of the foundation. A return water pipe (32) is connected above the water tank (35). The return water pipe (32) is connected to the outlet of the other end of each three-way switching valve (31). Three water pumps (34) are connected to one end of the water tank (35). The drain end of each water pump (34) is fixedly connected to a water injection pipe (33). Each water injection pipe (33) is connected to the inlet of a corresponding set of water guide pipes (28).

6. The RTO lower chamber body structure according to claim 3, wherein Each of the partitions (22) is V-shaped and converges at the center. The push valve component (24) includes a valve plate (25) and a valve ring (27). The valve ring (27) is fixedly connected to the partition (22). The valve plate (25) can abut against the bottom side of the valve ring (27). A cone cap (26) that can extend into the inner ring of the valve ring (27) is fixedly connected above the valve plate (25).

7. The RTO lower chamber body structure according to claim 6, wherein Each of the lower chamber shells (15) has a second switch valve (43) fixedly connected at the lowest position of the partition (22) on the bottom side. Each second switch valve (43) is connected to the upper chamber of the lower chamber shell (15), and a drain pipe (23) is connected between the bottom ends of each second switch valve (43).

8. The RTO lower chamber body structure according to claim 1, wherein Two sets of inspection ports (20) are provided on both sides of each of the lower chamber shells (15). Each set of inspection ports (20) is connected to the upper chamber and the lower chamber of the lower chamber shell (15). An inspection end cap (21) is fixedly connected to the end of each inspection port (20). A temperature sensor (42) is provided on one side of each of the lower chamber shells (15).

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