Electric heating type heat storage oxidation furnace

Abstract

The invention relates to the field of waste gas treatment equipment, and provides an electric heating type heat storage oxidation furnace which comprises an upper heat storage chamber, a lower heat storage chamber, a reaction chamber, a composite pipeline and a gas conveying assembly. The upper heat storage chamber and the lower heat storage chamber are ring-shaped and are locally communicated with the reaction chamber; the compound pipeline penetrates through the middle parts of the upper heat storage chamber and the lower heat storage chamber and comprises an inner pipe, an outer pipe and a connecting pipe; a first area is formed between the inner pipe and the outer pipe and communicates with the upper heat storage chamber. One end of the connecting pipe is communicated with the inner pipe, and the other end of the connecting pipe penetrates through the outer pipe; the inner pipe and the outer pipe are both connected with the gas transmission assembly, and the gas transmission assembly has a first state and a second state; in the first state, the gas conveying assembly guides waste gas to be treated into the inner pipe, and treated gas is exhausted from the first area; and in the second state, the gas conveying assembly guides waste gas to be treated into the first area, and the inner pipe exhausts treated gas. The problems that a traditional oxidation furnace is poor in preheating effect and low in energy utilization rate are solved.

Description

Technical Field

[0001] This application relates to the field of waste gas treatment equipment, and particularly to an electric heating regenerative oxidation furnace. Background Art

[0002] The electric heating regenerative oxidation furnace is an important equipment widely used in the waste gas treatment during industrial production processes. With the increasingly strict environmental protection regulations, the requirements for waste gas treatment in various industries are also getting higher and higher. Although the traditional incineration method can effectively remove harmful gases, there are many deficiencies in terms of energy consumption and emission control. Therefore, the development of new high-efficiency and low-consumption waste gas treatment devices has become one of the current research focuses.

[0003] In the existing technology, the waste gas to be treated first passes through the regenerative chamber A, and then enters the high-temperature reaction chamber to be heated and purified. The purified gas is discharged after passing through the regenerative chamber B. Among them, when the purified gas passes through the regenerative chamber B, it can transfer heat to the heat storage material in the regenerative chamber B. When the waste gas treatment is carried out next time, the waste gas first passes through the regenerative chamber B and then enters the reaction chamber, so that the waste gas can be preheated by the heat storage material in the regenerative chamber B before entering the reaction chamber.

[0004] However, the defect of the above method is that the residence time of the gas in the regenerative chamber A and the regenerative chamber B is short, and there is a large amount of heat storage material in the regenerative chamber A and the regenerative chamber B. The gas cannot fully contact with all the heat storage materials, and the heat exchange effect is not good. Summary of the Invention

[0005] In order to solve the problems of poor preheating effect and low energy utilization rate of the traditional oxidation furnace, this application provides an electric heating regenerative oxidation furnace.

[0006] The electric heating regenerative oxidation furnace provided by this application adopts the following technical solutions: An electric heating regenerative oxidation furnace includes: an upper regenerative chamber, a lower regenerative chamber, a reaction chamber, a composite pipeline, and a gas transmission assembly; The upper regenerative chamber, the reaction chamber, and the lower regenerative chamber are arranged in sequence from top to bottom. Both the upper regenerative chamber and the lower regenerative chamber are circular rings. One side of the upper regenerative chamber and the lower regenerative chamber close to the reaction chamber is partially communicated with the reaction chamber; The composite pipeline penetrates through the middle parts of the upper regenerative chamber and the lower regenerative chamber. The composite pipeline includes an inner pipe, an outer pipe, and a connecting pipe. The inner pipe is arranged inside the outer pipe; A first region is formed between the inner pipe and the outer pipe, and the first region is communicated with the upper regenerative chamber; One end of the connecting pipe is communicated with the inner pipe, and the other end penetrates through the outer pipe. The inner pipe is communicated with the lower regenerative chamber through the connecting pipe; Both the inner pipe and the outer pipe are connected to the gas transmission assembly, and the gas transmission assembly has a first state and a second state; In the first state, the gas transmission assembly is used to introduce the waste gas to be treated into the inner pipe, and the first area is used to discharge the treated gas; In the second state, the gas transmission assembly is used to introduce the waste gas to be treated into the first area, and the inner pipe is used to discharge the treated gas.

[0007] By adopting the above technical solution, efficient regenerative oxidation of the waste gas to be treated is achieved. Specifically, the design of the composite pipe enables the waste gas to be treated to flexibly switch the inlet and outlet paths between the inner pipe and the first area, thereby improving the operation efficiency and flexibility of the equipment. The first state and the second state of the gas transmission assembly further optimize the gas flow direction, ensure the effective separation of the treated gas and the untreated gas, and reduce the possibility of cross-contamination. Since the first area is adjacent to the inner area of the inner pipe, the heat of the treated gas can pass through the inner pipe and transfer to the waste gas to be treated. Together with the upper regenerator and the lower regenerator, the heat of the treated gas can be fully used to preheat the waste gas to be treated, improving the subsequent purification effect of the waste gas to be treated; at the same time, both the upper regenerator and the lower regenerator are circular rings, and only part of them is connected to the reaction chamber. Whether it is the waste gas to be treated or the treated gas, they will move in an arc in the upper regenerator or the lower regenerator, thereby increasing the heat exchange time and improving the utilization rate of thermal energy.

[0008] Optionally, the gas transmission assembly includes a gas transmission mechanism, a first gas transmission pipe and a second gas transmission pipe; The first gas transmission pipe is used to connect the top of the inner pipe and the gas transmission mechanism; The second gas transmission pipe is used to connect the first area and the gas transmission mechanism.

[0009] By adopting the above technical solution, flexible transportation and switching of the waste gas to be treated are achieved. Specifically, the first gas transmission pipe and the second gas transmission pipe are respectively responsible for connecting the inner pipe and the first area with the gas transmission mechanism, so as to ensure that the waste gas to be treated can selectively enter the inner pipe or the first area according to needs, improving the operation flexibility and adaptability of the system. When the first gas transmission pipe introduces the waste gas to be treated into the top of the inner pipe, the waste gas to be treated will pass through the reaction chamber (the waste gas to be treated is still inside the inner pipe) and enter the lower regenerator, and then enter the reaction chamber (the waste gas to be treated is outside the inner pipe). Therefore, before the waste gas to be treated enters the lower regenerator, it can be preheated by the heat in the reaction chamber. Even when the waste gas is treated for the first time (the lower regenerator has not absorbed the heat of the treated gas and cannot preheat the waste gas to be treated), the waste gas to be treated can still be preheated, which helps to improve the purification effect and solves the problem that the traditional oxidation furnace cannot preheat the waste gas to be treated during the first waste gas treatment.

[0010] Optionally, the gas delivery mechanism includes an upper gas chamber, a lower gas chamber, and two gas delivery units; The upper gas chamber is communicated with the first gas pipeline, and the lower gas chamber is communicated with the second gas pipeline; The gas delivery unit includes a driving member, a sealing plate, an upper pipeline, and a lower pipeline. One end of the upper pipeline and one end of the lower pipeline are arranged opposite to each other. The end of the upper pipeline away from the lower pipeline is communicated with the upper gas chamber, and the end of the lower pipeline away from the upper pipeline is communicated with the lower gas chamber; The sealing plate is arranged between the upper pipeline and the lower pipeline, and the driving member is connected to the sealing plate; The gas delivery unit has a third state and a fourth state; In the third state, the sealing plate blocks the upper pipeline; In the fourth state, the sealing plate blocks the lower pipeline; When one of the gas delivery units is in the third state, the other gas delivery unit is in the fourth state.

[0011] By adopting the above technical solution, precise control and efficient switching of the gas delivery mechanism are achieved. Specifically, by setting the upper gas chamber and the lower gas chamber to be communicated with the first gas pipeline and the second gas pipeline respectively, and cooperating with the coordinated work of the two gas delivery units, selective control of the gas flow path is ensured. The driving member in each gas delivery unit drives the sealing plate to move, which can block the upper pipeline in the third state or block the lower pipeline in the fourth state, so as to realize the introduction and discharge of the waste gas to be treated and the treated gas. Particularly importantly, when one of the gas delivery units is in the third state, the other gas delivery unit must be in the fourth state. This complementary design effectively avoids the phenomenon of gas mixing, and improves the operation efficiency and reliability of the equipment.

[0012] Optionally, the upper regenerator has a first gas blocking plate and a plurality of first air permeable plates. The first gas blocking plate and the plurality of first air permeable plates are arranged at intervals in the circumferential direction to divide the upper regenerator into a plurality of first upper chambers and a second upper chamber. The second upper chamber is separated from one of the first upper chambers by the first gas blocking plate, and any two adjacent first upper chambers are communicated through the first air permeable plate; a first upper through hole is arranged inside one of the first upper chambers, the first area is used to communicate with the first upper through hole, and the second upper chamber is communicated with the reaction chamber; The lower heat storage chamber has a second air blocking plate and a plurality of second air permeable plates, and the second air blocking plate and the plurality of second air permeable plates are arranged at intervals along the circumferential direction to divide the lower heat storage chamber into a plurality of first lower chambers and a second lower chamber, the second lower chamber is separated from one of the first lower chambers by the second air blocking plate, and any two adjacent first lower chambers are connected by the second air permeable plate; a first lower through hole is provided on the inner side of one of the first lower chambers, the inner tube is used to be connected to the first lower through hole, and the second lower chamber is connected to the reaction chamber.

[0013] By adopting the above technical solution, the upper heat storage chamber and the lower heat storage chamber are respectively divided into multiple chambers, and the gas flow path is effectively controlled by the air blocking plate and the air permeable plate. Specifically, for the upper heat storage chamber, when it is used to preheat the waste gas to be treated, the waste gas to be treated needs to pass through multiple first upper chambers before it can enter the reaction chamber through the second upper chamber, and the waste gas to be treated can be fully preheated; when the upper heat storage chamber is used to absorb the heat of the treated gas, the treated gas in the reaction needs to pass through multiple first upper chambers after entering the second upper chamber before it can be discharged through the first area, and the upper heat storage chamber can fully absorb the residual heat of the treated gas.

[0014] Similarly, the lower heat storage chamber can also control the flow path of the gas so that the lower heat storage chamber can fully exchange heat with the gas.

[0015] Optionally, the inner side of the second lower chamber has a second lower through hole; The electrically heated thermal storage oxidizer further comprises a driving assembly, the driving assembly being connected to the inner tube and being used to drive the inner tube to rotate so as to switch the inner tube between a fifth state and a sixth state; In the fifth state, the inner tube is connected to the second lower through hole; In the sixth state, the inner tube is communicated with the first lower through hole.

[0016] By adopting the above technical solution, the composite pipe can be flexibly switched between different states. Specifically, by adding a second lower through hole and combining with a driving assembly to drive the inner pipe to rotate, it can accurately switch between the fifth state and the sixth state. This design allows the inner pipe to be connected to the first lower through hole or the second lower through hole according to different needs, thereby optimizing the gas flow path and improving the utilization rate of thermal energy.

[0017] Optionally, the electrically heated thermal storage oxidation furnace further comprises a spiral pipe, wherein the spiral pipe is disposed in the reaction chamber, wherein one end of the spiral pipe is connected to the second upper chamber, and the other end of the spiral pipe is connected to the second lower chamber.

[0018] By adopting the above technical solution, the setting of the spiral pipeline can effectively extend the flow path of the gas in the reaction chamber, increase the heating time of the exhaust gas to be treated, and thus improve the sufficiency of the oxidation reaction.

[0019] Optionally, the electric heating regenerative thermal oxidizer further includes a heating component; The heating component is arranged in the reaction chamber. The heating component includes a heat storage plate and a heating wire. The heat storage plate has air permeable through holes, and the heating wire is arranged inside the heat storage plate.

[0020] By adopting the above technical solution, a heating component including a heat storage plate and a heating wire can be arranged in the reaction chamber. The heating wire inside the heat storage plate heats the gas flowing through the air permeable through holes, thereby increasing the temperature of the gas and promoting the efficient progress of the oxidation reaction. At the same time, the heat storage plate can effectively store heat, making the temperature of each part of the heating component more balanced.

[0021] Optionally, the heat storage plate has a plurality of placement through holes communicating with each other. The heating wire is arranged in the placement through holes, and the air permeable through holes communicate with the placement through holes.

[0022] By adopting the above technical solution, a reasonable layout of the heating wire in the heat storage plate can be achieved, enabling heat to be evenly transferred through the air permeable through holes and the placement through holes, improving the uniformity of the temperature distribution in the reaction chamber, and thus enhancing the heating efficiency and oxidation effect on the exhaust gas to be treated. At the same time, setting a plurality of placement through holes communicating with each other not only facilitates the installation and fixation of the heating wire but also ensures the effective conduction and diffusion of heat, further enhancing the overall performance of the equipment.

[0023] Optionally, the heat storage plate includes a first plate body and a second plate body, and the first plate body and the second plate body are spliced together to form the placement through holes.

[0024] By adopting the above technical solution, the heat storage plate is formed by splicing the first plate body and the second plate body to form the placement through holes. This structural design facilitates the installation and maintenance of the heating wire and improves the flexibility during the manufacturing process. Compared with an integrally formed structure, the separate splicing method can more precisely control the size and shape of the placement through holes, ensuring the optimal arrangement position of the heating wire, thereby enhancing the heating efficiency and the uniformity of heat distribution. In addition, when replacement or repair is required, only the corresponding plate body needs to be disassembled, greatly reducing the operation difficulty and cost.

[0025] Optionally, the heating component further includes a heat storage rod. The heat storage rod is arranged in the placement through holes, and the heating wire is wound around the heat storage rod.

[0026] By adopting the above technical solution, the heating wire wound around the heat storage rod can increase the heat transfer efficiency and make the heating more uniform. Specifically, the heat storage rod placed in the placement through-hole can not only play a supporting role to prevent the heating wire from deforming and collapsing at high temperatures, but also increase the contact area with the air flow, thereby improving the energy conversion rate and the temperature distribution consistency in the reaction chamber. This design effectively reduces energy consumption and improves the working performance of the entire electric heating regenerative thermal oxidizer at the same time.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the design of the composite pipeline and the gas transmission component, the separation of the waste gas to be treated and the treated gas and the flexible switching of the transmission path are realized, effectively avoiding gas cross-contamination, and at the same time, the heat of the treated gas can be transferred to the waste gas to be treated; 2. The unique communication structure between the upper heat storage chamber, the lower heat storage chamber and the reaction chamber, combined with the functional division of the first region of the composite pipeline and the inner pipe, greatly improves the uniformity of gas flow, enhances the heat exchange efficiency, and reduces energy loss; 3. Combining the different state operations of the gas transmission component, the rapid switching of the gas flow direction can be completed without interrupting the work process, solving the problem of energy waste caused by poor switching in the traditional device, and further optimizing the overall performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional structural schematic diagram of the electric heating regenerative thermal oxidizer provided by the present application.

[0029] Figure 2 is a structural schematic diagram of the electric heating regenerative thermal oxidizer provided by the present application.

[0030] Figure 3 is one of the structural schematic diagrams of the heating component of the electric heating regenerative thermal oxidizer provided by the present application.

[0031] Figure 4 is the second structural schematic diagram of the heating component of the electric heating regenerative thermal oxidizer provided by the present application.

[0032] Figure 5 is a structural schematic diagram of the first heat storage chamber and the composite pipeline of the electric heating regenerative thermal oxidizer provided by the present application.

[0033] Figure 6 is a partial schematic diagram of the electric heating regenerative thermal oxidizer provided by the present application when the inner pipe is in the fifth state.

[0034] Figure 7 is a partial schematic diagram of the electric heating regenerative thermal oxidizer provided by the present application when the inner pipe is in the sixth state.

[0035] Figure 8 It is a schematic structural diagram of a composite pipeline of an electric heating regenerative thermal oxidizer provided by this application.

[0036] Explanation of reference numerals: 1. Upper regenerative chamber; 11. First air-blocking plate; 12. First air-permeable plate; 13. First upper chamber; 131. First upper through-hole; 14. Second upper chamber; 2. Lower regenerative chamber; 21. Second air-blocking plate; 22. Second air-permeable plate; 23. First lower chamber; 231. First lower through-hole; 24. Second lower chamber; 241. Second lower through-hole; 3. Reaction chamber; 4. Composite pipeline; 41. Inner pipe; 42. Outer pipe; 421. Upper outer pipe; 422. Lower outer pipe; 43. Connecting pipe; 44. First region; 5. Gas transmission assembly; 51. Gas transmission mechanism; 511. Upper gas chamber; 512. Lower gas chamber; 513. Gas transmission unit; 5131. Driving part; 5132. Sealing plate; 5133. Upper pipeline; 5134. Lower pipeline; 52. First gas transmission pipe; 53. Second gas transmission pipe; 6. Heating assembly; 61. Heat storage plate; 611. Placing through-hole; 62. Heating wire; 7. Driving assembly. Specific embodiments

[0037] The following will further elaborate on this application in conjunction with the attached Figures 1 to 8 drawings.

[0038] Embodiment 1 As Figures 1 to 4 shown, an electric heating regenerative thermal oxidizer disclosed in an embodiment of this application includes: an upper regenerative chamber 1, a lower regenerative chamber 2, a reaction chamber 3, a composite pipeline 4, a gas transmission assembly 5, a heating assembly 6, and a heat storage member.

[0039] Specifically, the heating assembly 6 is arranged in the reaction chamber 3. The heating assembly 6 includes a heat storage plate 61, a heating wire 62, and a heat storage rod. The heat storage plate 61 can be a horizontally arranged ceramic plate, specifically a honeycomb ceramic. A plurality of vertically penetrating air-permeable through-holes are provided on the heat storage plate 61 so that the waste gas can pass through the heat storage plate 61. The heat storage plate 61 has a plurality of placing through-holes 611, and the plurality of placing through-holes 611 are parallel to each other. The heating wire 62 is arranged in the placing through-hole 611.

[0040] The included angle between the direction of the placing through-hole 611 and the heat storage plate 61 is not 90 degrees. For example, the placing through-hole 611 can be horizontally arranged, so that the heat of the heating wire 62 can be horizontally conducted to the outside of the heat storage plate 61 through the placing through-hole 611, thereby enabling a larger range of heat zones in the reaction chamber 3. This helps to improve the temperature uniformity and the purification efficiency of the waste gas.

[0041] The heating wire 62 can heat the heat storage plate 61, and the heat conducts among various parts of the heat storage plate 61, so that the temperatures of various parts of the heat storage plate 61 are uniform. When the exhaust gas to be treated passes through the heat storage plate 61, the high temperature of the heat storage plate 61 can better purify the exhaust gas.

[0042] Furthermore, a plurality of placement through-holes 611 communicate with each other, enabling heat to conduct among the plurality of placement through-holes 611, thereby making the temperatures of various parts more uniform.

[0043] The air-permeable through-hole communicates with the placement through-hole 611, allowing the exhaust gas to be treated to flow through the placement through-hole 611 and flow among the plurality of placement through-holes 611, improving the purification effect and also avoiding the problem of uneven temperature.

[0044] The heat storage rod can be a ceramic rod. The ceramic rod is arranged along the axial direction of the placement through-hole 611, and the heating wire 62 is wound around the ceramic rod. For example, a ceramic rod is provided in each placement through-hole 611, and a heating wire 62 is wound around each ceramic rod. By winding the heating wire 62 around the ceramic rod, the ceramic rod can support the heating wire 62 and prevent the heating wire 62 from deforming and collapsing at high temperatures.

[0045] Furthermore, the heat storage plate 61 includes a first plate body and a second plate body. The first plate body and the second plate body can be spliced up and down to form the placement through-hole 611. By providing that the heat storage plate 61 includes a first plate body and a second plate body, it is convenient to set and replace the heating wire 62.

[0046] The heating assembly 6 can be horizontally arranged in the reaction chamber 3.

[0047] The upper heat storage chamber 1, the reaction chamber 3, and the lower heat storage chamber 2 are arranged in sequence from top to bottom. Both the upper heat storage chamber 1 and the lower heat storage chamber 2 are annular. Heat storage elements are placed in both the upper heat storage chamber 1 and the lower heat storage chamber 2, and the heat storage elements can be ceramic particles.

[0048] As Figure 2 and Figure 7 shown, the composite pipeline 4 penetrates through the middle parts of the upper heat storage chamber 1 and the lower heat storage chamber 2. The composite pipeline 4 includes an inner pipe 41, an outer pipe 42, and a connecting pipe 43. The inner pipe 41 is arranged inside the outer pipe 42, and the area between the inner pipe 41 and the outer pipe 42 forms a first area 44. The first area 44 communicates with the inner side of the upper heat storage chamber 1. One end of the connecting pipe 43 communicates with the inner pipe 41, and the other end penetrates through the outer pipe 42. The inner pipe 41 communicates with the inner side of the lower heat storage chamber 2 through the connecting pipe 43.

[0049] Both the inner pipe 41 and the outer pipe 42 are connected to the gas transmission assembly 5. The gas transmission assembly 5 has a first state and a second state.

[0050] In the first state, the gas supply component 5 is used to introduce the waste gas to be treated into the inner tube 41. After the waste gas to be treated enters the lower regenerator 2 through the connecting pipe 43, it can enter the reaction chamber 3 for oxidation reaction. The purified treated gas then enters the upper regenerator 1. After the ceramic particles in the upper regenerator 1 absorb the waste heat of the treated gas, the treated gas enters the first region 44 and is discharged through the first region 44.

[0051] In the second state, the gas supply component 5 is used to introduce the waste gas to be treated into the first region 44. The waste gas to be treated can enter the upper regenerator 1. Since the ceramic particles in the upper regenerator 1 have absorbed heat, the ceramic particles can preheat the waste gas to be treated. The preheated waste gas to be treated enters the reaction chamber 3 and is purified. The obtained treated gas enters the lower regenerator 2 and transfers heat to the ceramic particles in the lower regenerator 2. After that, the cooled treated gas can enter the inner tube 41 and be discharged through the inner tube 41.

[0052] By alternately repeating the above process, the waste gas treatment can be continuously carried out. Among them, the sides of the upper regenerator 1 and the lower regenerator 2 close to the reaction chamber 3 are both heat insulation plates, which can prevent the heat in the reaction chamber 3 from directly leaking to the upper regenerator 1 and the lower regenerator 2, and further prevent the temperature of the ceramic particles in the upper regenerator 1 and the lower regenerator 2 from always being in a high state, resulting in the inability to effectively absorb the heat of the treated gas.

[0053] Only partial sides of the upper regenerator 1 and the lower regenerator 2 close to the reaction chamber 3 are communicated with the reaction chamber 3. This not only meets the gas flow requirement but also enables the gas entering the upper regenerator 1 and the lower regenerator 2 to flow along an arc trajectory, so as to exchange heat with more ceramic particles and improve the heat exchange effect.

[0054] As Figure 5 shown, the upper regenerator 1 has a first gas blocking plate 11 and a plurality of first gas permeable plates 12. The first gas permeable plates 12 are provided with small holes for gas to pass through, while the first gas blocking plate 11 does not allow gas to pass through. The first gas blocking plate 11 and the plurality of first gas permeable plates 12 are evenly spaced along the circumferential direction to divide the upper regenerator 1 into a plurality of first upper chambers 13 and a second upper chamber 14. The first upper chambers 13 and the second upper chamber 14 are both fan-shaped.

[0055] The second upper chamber 14 is separated from an adjacent first upper chamber 13 by a first air-blocking plate 11, and any two adjacent first upper chambers 13 are communicated with each other by a first air-permeable plate 12. An air-permeable hole is formed on one side of the second upper chamber 14 close to the reaction chamber 3, so that the second upper chamber 14 is communicated with the reaction chamber 3. Ceramic particles (heat storage elements) are placed in the first upper chamber 13. A first upper through hole 131 is provided on the inner side of one of the first upper chambers 13, and the first region 44 can be communicated with the first upper through hole 131. Therefore, when the waste gas to be treated is introduced into the corresponding first upper chamber 13 from the first region 44, the waste gas to be treated needs to pass through at least one first air-permeable plate 12 until it reaches the inside of the second upper chamber 14 and then can enter the reaction chamber 3 through the air-permeable hole. Therefore, the waste gas to be treated can be fully contacted with the ceramic particles during the process of entering the reaction chamber 3 from the first region 44 to complete preheating, and the treated gas can also be fully heat-exchanged with the ceramic particles during the process of entering the first region 44 from the reaction chamber 3, improving the thermal energy utilization rate.

[0056] For example, the first upper chamber 13 provided with the first upper through hole 131 is adjacent to the second upper chamber 14, and the two are separated by the first air-blocking plate 11. Then, the waste gas to be treated introduced from the first region 44 needs to pass through all the first upper chambers 13 in sequence before it can enter the second upper chamber 14 and enter the reaction chamber 3 through the air-permeable hole. Therefore, before the waste gas to be treated enters the reaction chamber 3, it needs to be heat-exchanged with the ceramic particles in all the first upper chambers 13 to be fully preheated.

[0057] On the contrary, after the treated gas in the reaction chamber 3 enters the second upper chamber 14, it also needs to pass through all the first upper chambers 13 before it can enter the first region 44. Therefore, the high-temperature treated gas can transfer more heat to the ceramic particles in the first upper chamber 13, ensuring that the ceramic particles can better preheat the waste gas to be treated in the next waste gas treatment process.

[0058] Furthermore, as Figure 7 shown, the lower heat storage chamber 2 has a second air-blocking plate 21 and a plurality of second air-permeable plates 22. The second air-blocking plate 21 and the plurality of second air-permeable plates 22 are arranged at intervals in the circumferential direction to divide the lower heat storage chamber 2 into a plurality of first lower chambers 23 and a second lower chamber 24. The second lower chamber 24 is separated from one of the first lower chambers 23 by the second air-blocking plate 21, and any two adjacent first lower chambers 23 are communicated with each other by the second air-permeable plate 22.

[0059] Ceramic particles are placed in the first lower chamber 23. An air-permeable hole is also formed on one side of the second lower chamber 24 facing the reaction chamber 3, so as to be communicated with the reaction chamber 3. A first lower through hole 231 is provided on the inner side of one of the first lower chambers 23, and the inner tube 41 can be communicated with the first lower through hole 231 through the connecting pipe 43.

[0060] Through the above settings, the waste gas to be processed can be fully contacted with the ceramic particles in the first lower chamber 23 during the process of entering the reaction chamber 3 from the inner pipe 41, so as to complete preheating. Moreover, the treated gas can also fully exchange heat with the ceramic particles during the process of entering the inner pipe 41 from the reaction chamber 3, improving the utilization rate of thermal energy.

[0061] For example, the first lower chamber 23 provided with the first lower through hole 231 is adjacent to the second lower chamber 24, and the two are separated by the second air blocking plate 21. Then, the waste gas to be processed introduced by the inner pipe 41 needs to pass through all the first lower chambers 23 in sequence before it can enter the second lower chamber 24 and enter the reaction chamber 3 through the air permeable holes. Therefore, before the waste gas to be processed enters the reaction chamber 3, it needs to exchange heat with the ceramic particles in all the first lower chambers 23 to be fully preheated.

[0062] Conversely, after the treated gas in the reaction chamber 3 enters the second lower chamber 24, it also needs to pass through all the first lower chambers 23 before it can enter the inner pipe 41. Therefore, the high-temperature treated gas can transfer more heat to the ceramic particles in the first lower chamber 23, ensuring that the ceramic particles can better preheat the waste gas to be processed in the next waste gas treatment process.

[0063] As Figures 1 to 2 shown, the gas transmission assembly 5 includes a gas transmission mechanism 51, a first gas transmission pipe 52 and a second gas transmission pipe 53.

[0064] The gas transmission mechanism 51 includes an upper gas chamber 511, a lower gas chamber 512 and two gas transmission units 513. The opposite ends of the first gas transmission pipe 52 are respectively communicated with the upper gas chamber 511 and the top of the inner pipe 41. The opposite ends of the second gas transmission pipe 53 are respectively communicated with the lower gas chamber 512 and the first region 44.

[0065] The gas transmission unit 513 includes a driving member 5131, a sealing plate 5132, an upper pipeline 5133 and a lower pipeline 5134. One end of the upper pipeline 5133 and one end of the lower pipeline 5134 are arranged oppositely. The end of the upper pipeline 5133 away from the lower pipeline 5134 is communicated with the upper gas chamber 511, and the end of the lower pipeline 5134 away from the upper pipeline 5133 is communicated with the lower gas chamber 512.

[0066] The sealing plate 5132 is arranged between the upper pipeline 5133 and the lower pipeline 5134. The driving member 5131 is connected to the sealing plate 5132. The driving member 5131 can be a cylinder. By driving the sealing plate 5132 to move through the cylinder, the gas transmission unit 513 can be switched between the third state and the fourth state.

[0067] In the third state, the sealing plate 5132 blocks the upper pipe 5133, and the lower pipe 5134 is connected. By introducing the waste gas to be treated into the area between the upper pipe 5133 and the lower pipe 5134, the waste gas to be treated can enter the first area 44 through the lower pipe 5134, and then enter the reaction chamber 3 for oxidation reaction, and the purified treated gas can enter the upper gas chamber 511 through the inner pipe 41.

[0068] In the fourth state, the sealing plate 5132 blocks the lower pipe 5134, and the upper pipe 5133 is connected. By introducing the waste gas to be treated into the area between the upper pipe 5133 and the lower pipe 5134, the waste gas to be treated can enter the inner tube 41 through the upper pipe 5133, and then enter the reaction chamber 3 for oxidation reaction, and the purified treated gas can enter the lower gas chamber 512 through the first area 44.

[0069] Among them, when one gas delivery unit 513 is in the third state, the other gas delivery unit 513 is in the fourth state, so that when one gas delivery unit 513 is used to introduce the gas to be treated into the lower pipe 5134 (the obtained treated gas will enter the upper gas chamber 511), the upper pipe 5133 of the other gas delivery unit 513 is in a conducting state, so that the treated gas in the upper gas chamber 511 can be discharged smoothly.

[0070] Conversely, when one gas delivery unit 513 is used to introduce the gas to be treated into the upper pipe 5133 (the treated gas obtained will enter the lower gas chamber 512), the lower pipe 5134 of the other gas delivery unit 513 is in a conducting state, so that the treated gas in the lower gas chamber 512 can also be discharged smoothly.

[0071] By setting the two gas delivery units 513 to be always in different states, when one gas delivery unit 513 is used to introduce waste gas to be treated, the other gas delivery unit 513 can be used to discharge treated gas. The two gas delivery units 513 are independent of each other to avoid interference.

[0072] Example 2 The difference between this embodiment and embodiment 1 is that the flow path of the waste gas to be treated is optimized.

[0073] Specifically, Figures 6 to 7As shown, the inner side of the second lower chamber 24 has a second lower through-hole 241. The electrothermal regenerative thermal oxidizer further includes a driving assembly 7. The driving assembly 7 is connected to the inner tube 41 and is used to drive the inner tube 41 to rotate so that the inner tube 41 switches between a fifth state and a sixth state. Among them, the driving assembly 7 includes a motor, a chain and two gears. One of the gears is in transmission connection with the motor, and the other gear is sleeved on the inner tube 41. The two gears are in transmission connection through the chain. The first gas delivery pipe 52 is connected to the inner tube 41 through a rotary joint, so as to meet the rotation requirement of the inner tube 41.

[0074] Since the composite pipe 4 passes through the reaction chamber 3, when the waste gas to be treated is introduced into the top interior of the inner tube 41 through the first gas delivery pipe 52 during the initial waste gas treatment, the waste gas to be treated will pass through the reaction chamber 3 and be preheated before entering the lower regenerative chamber 2. At this time, the temperature of the ceramic particles in the lower regenerative chamber 2 is relatively low. If the waste gas to be treated stays in the lower regenerative chamber 2 for too long, it will not only reduce the preheating effect of the waste gas to be treated, but also cause the ceramic particles in the lower regenerative chamber 2 to heat up significantly, and then cannot fully absorb the heat of the treated gas during the next waste gas treatment process.

[0075] Based on the above problems, in this embodiment, the state of the inner tube 41 is switched to change the flow path of the waste gas to be treated.

[0076] For example, as Figure 6 shown, during the initial waste gas treatment, the inner tube 41 is in the fifth state. At this time, the inner tube 41 is communicated with the second lower through-hole 241 through the communication pipe. The preheated waste gas to be treated can enter the second lower chamber 24 from the inner tube 41. Since the second lower chamber 24 is directly communicated with the reaction chamber 3, the waste gas to be treated entering the second lower chamber 24 can quickly enter the reaction chamber 3, and only a small amount of heat is absorbed by the ceramic particles in the first lower chamber 23. Therefore, the heat loss of the waste gas to be treated is small, and the temperature of the ceramic particles in the first lower chamber 23 also has no obvious change.

[0077] The purified treated gas enters the second upper chamber 14 and is discharged into the first area 44 after flowing through a plurality of first upper chambers 13.

[0078] During the second waste gas treatment, as Figure 5 and Figure 7As shown, the inner tube 41 switches to the sixth state. At this time, the inner tube 41 is communicated with the first lower through hole 231 through the communication tube. The waste gas to be treated enters the corresponding first upper chamber 13 from the first region 44, enters the second upper chamber 14 after flowing through a plurality of first upper chambers 13, and then enters the reaction chamber 3. Before the waste gas to be treated enters the reaction chamber 3, it is not only preheated by the heat in the reaction chamber 3 (it will pass by the reaction chamber 3 when flowing in the second region), but also preheated by the ceramic particles in the first upper chamber 13, and the preheating effect is better.

[0079] The treated gas obtained after the oxidation reaction enters the second lower chamber 24, and is discharged after flowing through a plurality of first lower chambers 23 and entering the interior of the inner tube 41. Among them, since the ceramic particles in the first lower chamber 23 do not significantly heat up during the initial waste gas treatment process, when the treated gas flows through the first lower chamber 23, the ceramic particles in the first lower chamber 23 can fully absorb the waste heat of the treated gas.

[0080] It should be noted that as Figure 8 shown, the outer tube 42 is divided into an upper outer tube 421 and a lower outer tube 422, and the upper outer tube 421 and the lower outer tube 422 are rotatably connected. The inner tube 41 is connected to the lower outer tube 422 through a connecting tube 43. When the inner tube 41 rotates, the lower outer tube 422 rotates with the inner tube 41, while the upper outer tube 421 does not rotate, so that the inner tube 41 can switch states by rotating, and when the inner tube 41 switches states, the first region 44 is always communicated with the first upper through hole 131.

[0081] The bottom of the lower outer tube 422 is connected to the second gas transmission pipe 53 through a rotating joint, and the bottom of the inner tube 41 is closed, so that the second gas transmission pipe 53 is communicated with the first region 44.

[0082] In this embodiment, ceramic particles do not need to be placed in the second upper chamber 14 and the second lower chamber 24, so that the gas can enter and exit the second upper chamber 14 and the second lower chamber 24 more smoothly.

[0083] In this embodiment, the electric heating type regenerative thermal oxidizer further includes a spiral pipeline, the spiral pipeline is arranged in the reaction chamber 3, one end of the spiral pipeline is communicated with the second upper chamber 14, and the other end is communicated with the second lower chamber 24. By arranging the spiral pipeline, the flow distance of the waste gas to be treated in the reaction chamber 3 can be increased, so that the waste gas to be treated can be fully purified. When the spiral pipeline is arranged, the heating component 6 can be arranged inside the spiral pipeline.

Claims

1. An electrically heated thermal storage oxidation furnace, characterized in that: include: An upper heat storage chamber (1), a lower heat storage chamber (2), a reaction chamber (3), a composite pipeline (4) and a gas transmission component (5); The upper heat storage chamber (1), the reaction chamber (3) and the lower heat storage chamber (2) are arranged in sequence from top to bottom, the upper heat storage chamber (1) and the lower heat storage chamber (2) are both annular in shape, and one side of the upper heat storage chamber (1) and the lower heat storage chamber (2) close to the reaction chamber (3) is partially connected to the reaction chamber (3); The composite pipe (4) passes through the middle of the upper heat storage chamber (1) and the lower heat storage chamber (2), the composite pipe (4) comprises an inner pipe (41), an outer pipe (42) and a connecting pipe (43), and the inner pipe (41) is arranged inside the outer pipe (42); A first region (44) is formed between the inner tube (41) and the outer tube (42), and the first region (44) is in communication with the upper heat storage chamber (1); One end of the connecting pipe (43) is in communication with the inner pipe (41), and the other end passes through the outer pipe (42); the inner pipe (41) is in communication with the lower heat storage chamber (2) through the connecting pipe (43); The inner tube (41) and the outer tube (42) are both connected to the gas delivery component (5), and the gas delivery component (5) has a first state and a second state; In the first state, the gas delivery component (5) is used to introduce waste gas to be treated into the inner tube (41), and the first area (44) is used to discharge treated gas; In the second state, the gas delivery assembly (5) is used to introduce waste gas to be treated into the first area (44), and the inner tube (41) is used to discharge treated gas.

2. The electrically heated thermal storage oxidation furnace according to claim 1, characterized in that: The gas delivery assembly (5) comprises a gas delivery mechanism (51), a first gas delivery pipe (52) and a second gas delivery pipe (53); The first gas delivery pipe (52) is used to connect the top of the inner tube (41) and the gas delivery mechanism (51); The second gas delivery pipe (53) is used to connect the first area (44) and the gas delivery mechanism (51).

3. The electrically heated thermal storage oxidation furnace according to claim 2, characterized in that: The gas delivery mechanism (51) comprises an upper gas chamber (511), a lower gas chamber (512) and two gas delivery units (513); The upper air chamber (511) is in communication with the first air delivery pipe (52), and the lower air chamber (512) is in communication with the second air delivery pipe (53); The gas delivery unit (513) comprises a driving member (5131), a sealing plate (5132), an upper pipe (5133) and a lower pipe (5134); one end of the upper pipe (5133) and one end of the lower pipe (5134) are arranged opposite to each other; one end of the upper pipe (5133) facing away from the lower pipe (5134) is communicated with the upper air chamber (511); and one end of the lower pipe (5134) facing away from the upper pipe (5133) is communicated with the lower air chamber (512); The sealing plate (5132) is disposed between the upper pipe (5133) and the lower pipe (5134), and the driving member (5131) is connected to the sealing plate (5132); The gas delivery unit (513) has a third state and a fourth state; In the third state, the sealing plate (5132) blocks the upper pipe (5133); In the fourth state, the sealing plate (5132) blocks the lower pipe (5134); When one of the gas delivery units (513) is in the third state, the other gas delivery unit (513) is in the fourth state.

4. The electrically heated thermal storage oxidation furnace according to claim 1, characterized in that: The upper heat storage chamber (1) comprises a first air blocking plate (11) and a plurality of first air permeable plates (12); the first air blocking plate (11) and the plurality of first air permeable plates (12) are arranged at intervals along the circumferential direction to divide the upper heat storage chamber (1) into a plurality of first upper chambers (13) and a second upper chamber (14); the second upper chamber (14) is separated from one of the first upper chambers (13) by the first air blocking plate (11); any two adjacent first upper chambers (13) are connected via the first air permeable plate (12); a first upper through hole (131) is provided on the inner side of one of the first upper chambers (13); the first region (44) is used to communicate with the first upper through hole (131); and the second upper chamber (14) is connected to the reaction chamber (3); The lower heat storage chamber (2) comprises a second air blocking plate (21) and a plurality of second air permeable plates (22); the second air blocking plate (21) and the plurality of second air permeable plates (22) are arranged at intervals along the circumferential direction to divide the lower heat storage chamber (2) into a plurality of first lower chambers (23) and a second lower chamber (24); the second lower chamber (24) is separated from one of the first lower chambers (23) by the second air blocking plate (21); any two adjacent first lower chambers (23) are connected via the second air permeable plate (22); a first lower through hole (231) is provided on the inner side of one of the first lower chambers (23); the inner tube (41) is used to communicate with the first lower through hole (231); and the second lower chamber (24) is connected to the reaction chamber (3).

5. The electrically heated thermal storage oxidation furnace according to claim 4, characterized in that: The inner side of the second lower chamber (24) is provided with a second lower through hole (241); The electrically heated thermal storage oxidizer further comprises a driving assembly (7), wherein the driving assembly (7) is connected to the inner tube (41) and is used to drive the inner tube (41) to rotate so that the inner tube (41) switches between a fifth state and a sixth state; In the fifth state, the inner tube (41) is in communication with the second lower through hole (241); In the sixth state, the inner tube (41) is in communication with the first lower through hole (231).

6. The electrically heated thermal storage oxidation furnace according to claim 4, characterized in that: The electrically heated thermal storage oxidation furnace further comprises a spiral pipe, which is arranged in the reaction chamber (3), one end of the spiral pipe being in communication with the second upper chamber (14), and the other end of the spiral pipe being in communication with the second lower chamber (24).

7. The electrically heated thermal storage oxidation furnace according to claim 1, characterized in that: The electrically heated thermal storage oxidation furnace further comprises a heating component (6); The heating component (6) is arranged in the reaction chamber (3), the heating component (6) comprises a heat storage plate (61) and a heating wire (62), the heat storage plate (61) has a ventilation through hole, and the heating wire (62) is arranged inside the heat storage plate (61).

8. The electrically heated thermal storage oxidation furnace according to claim 7, characterized in that: The heat storage plate (61) has a plurality of placement through holes (611) that are connected to each other, the heating wire (62) is arranged in the placement through hole (611), and the air-permeable through hole is connected to the placement through hole (611).

9. The electrically heated thermal storage oxidation furnace according to claim 8, characterized in that: The heat storage plate (61) comprises a first plate body and a second plate body, and the first plate body and the second plate body are spliced ​​together to form the placement through hole (611).

10. The electrically heated thermal storage oxidation furnace according to claim 8, characterized in that: The heating component (6) also includes a heat storage rod, the heat storage rod is arranged in the placement through hole (611), and the heating wire (62) is wound around the heat storage rod.

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