Energy-saving and environment-friendly RTO heat exchanger

Abstract

The utility model discloses an energy-saving and environment-friendly RTO heat exchanger, relates to the field of waste gas treatment, and aims to solve the problems that the temperature of a traditional single incineration chamber is high, the heating speed of a heat storage body is high, and a heat storage ceramic body is prone to being damaged due to the sharp change of the temperature. According to the technical scheme, a plurality of heat storage ceramic bodies embedded into a heating chamber, a preheating incineration chamber and a warming incineration chamber are fixedly arranged on the outer edge of a rotating rod, and conversion openings allowing the heat storage ceramic bodies to pass through are formed in the side walls of the heating chamber, the preheating incineration chamber and the warming incineration chamber in a penetrating mode; the heating chamber, the preheating incineration chamber and the heating incineration chamber are provided with sealing devices for sealing the conversion openings in a matched mode, and the outer wall of the heating chamber communicates with a gas input pipe penetrating out of the heat preservation shell and a gas through pipe communicating with the preheating incineration chamber and the heating incineration chamber. And the outer walls of the preheating incineration chamber and the heating incineration chamber communicate with gas output pipes penetrating out of the heat preservation shell correspondingly, and the effect that the heat storage ceramic body is preheated to prevent damage caused by too fast heating is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to an energy-saving and environment-friendly RTO heat exchanger. Background Art

[0002] Regenerative Thermal Oxidation (RTO) systems utilize ceramic thermal storage elements to store the heat generated during the decomposition of organic waste gas. This stored heat is then used to preheat and decompose untreated organic waste gas, achieving high thermal efficiency. The oxidation temperature typically ranges from 800°C to 850°C, with a maximum of 1100°C. Regenerative Thermal Oxidation (RTO) systems are primarily used in applications where the organic waste gas concentration is low but the volume is high. They are also particularly well-suited for applications where the organic waste gas contains corrosive or catalyst-toxic substances, or when certain odors require higher temperatures for oxidation.

[0003] An existing RTO system uses an induced draft fan to feed organic waste gas into a regenerator for heating, absorbing the heat stored in the regenerator. The waste gas then enters the incineration chamber for further combustion, reaching a set temperature (760°C). During this process, the organic components are completely decomposed into CO2 and H2O. Because the waste gas absorbs the heat recovered from the previous cycle within the regenerator, fuel consumption is reduced, resulting in excellent energy-saving and environmental benefits.

[0004] The above-mentioned existing technical solutions have the following defects: the heat storage body is generally a ceramic material with a large specific heat capacity. The RTO heat storage ceramic body repeatedly absorbs and releases heat. The temperature of the traditional single incineration chamber is high, and the heat storage body is heated quickly. The rapid temperature change can easily cause damage to the heat storage ceramic body. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving and environment-friendly RTO heat exchanger.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The invention comprises a heat-insulating shell, wherein a heating chamber, a preheating incineration chamber and a temperature-raising incineration chamber are fixedly installed inside the heat-insulating shell, and the heating chamber, the preheating incineration chamber and the temperature-raising incineration chamber are prism-shaped and fit together, and a rotating rod is rotatably arranged at the connection of the heating chamber, the preheating incineration chamber and the temperature-raising incineration chamber, and a driving motor for driving the rotating rod is fixedly arranged on the outer wall of the heat-insulating shell, and a plurality of heat-storage ceramic bodies respectively embedded in the heating chamber, the preheating incineration chamber and the temperature-raising incineration chamber are fixed on the outer edge of the rotating rod. A conversion opening for passing heat storage ceramics is provided through the chamber, and the heating chamber, preheating incineration chamber and heating incineration chamber are equipped with sealing devices for sealing the conversion openings. The outer wall of the heating chamber is connected to a gas input pipe passing through the heat-insulating shell and a gas through pipe connected to the preheating incineration chamber and the heat-incineration chamber respectively. The outer walls of the preheating incineration chamber and the heat-incineration chamber are respectively connected to a gas output pipe passing through the heat-insulating shell. The preheating incineration chamber and the heat-incineration chamber are provided with an ignition device. The gas input pipe, gas through pipe and gas output pipe are installed with solenoid valves.

[0008] By adopting the above technical solution, when in use, the organic waste gas enters the heating chamber from the gas input pipe, absorbs heat after passing through the heat storage ceramic body, and after the temperature of the organic waste gas increases, it enters the preheating incineration chamber and the heating incineration chamber through the gas pipe respectively. Under the control of the solenoid valve, the scale of the organic waste gas in the preheating incineration chamber is smaller than that of the heating incineration chamber. During combustion, the preheating incineration chamber can slowly and evenly heat the internal heat storage ceramic body, and the heating incineration chamber can heat the heat storage ceramic body at a high temperature to make its temperature reach a preset 760°C. Then, the gas input is closed to start the sealing device to release the internal seal, and the driving motor drives The heat storage ceramic body rotates and changes its position, the heat storage ceramic body in the heating chamber enters the preheating incineration chamber, the heat storage ceramic body in the preheating incineration chamber enters the heating incineration chamber, and the heat storage ceramic body in the heating incineration chamber enters the heating chamber. At this time, the sealing device is started to reseal the three chambers, and the heating and incineration treatment process of the organic waste gas is carried out reciprocatingly. Since the heat storage ceramic body has been evenly preheated in the preheating incineration chamber before entering the heating incineration chamber, the heat storage ceramic body can be heated to the preset temperature at a high speed and stably, avoiding the situation where the heat storage ceramic body is damaged by instantaneous thermal expansion and contraction caused by rapid heating from a low temperature state.

[0009] Furthermore, the heat storage ceramic body includes several plates that fit the shape of the inner walls of the heating chamber, preheating incineration chamber and heating incineration chamber, and the plates are penetrated by several honeycomb-shaped gas holes. The several plates are parallel to each other and fixed at intervals on the outer edge of the rotating rod, and the gas holes of different plates are staggered with each other.

[0010] By adopting the above technical solution, the honeycomb-shaped gas through holes not only ensure the smooth passage of gas but also have a larger contact area to improve the heat exchange efficiency between the heat storage ceramic body and the organic waste gas. At the same time, the gas through holes are staggered to each other so that the organic waste gas can fully contact with all the plates, and can also disrupt the air duct to prevent the organic waste gas from passing through all the plates too quickly, resulting in poor heating effect.

[0011] Furthermore, the sealing device includes a sealing plate that cuts off the conversion opening, and the sealing plate is respectively slidably arranged on the side walls of the heating chamber, the preheating incineration chamber and the temperature rising incineration chamber in the vertical direction. A connecting cover plate is fixedly arranged at the end of the sealing plate, and a linkage column that passes through the insulation shell is vertically arranged at the center of gravity of the connecting cover plate. The different linkage columns are connected to each other with a top plate, and a telescopic motor supporting the top plate is fixedly arranged on the top wall of the insulation shell, and the telescopic shaft of the telescopic motor is fixedly connected to the bottom wall of the top plate.

[0012] By adopting the above technical solution, when the conversion opening needs to be opened, the telescopic shaft of the telescopic motor extends, driving the top plate, linkage column, connecting cover plate and sealing plate to rise synchronously. After rising to the specified position, the conversion opening can be fully opened to facilitate the position conversion of the heat storage ceramic body. Conversely, the telescopic shaft extends and contracts to drive the sealing plate to close the conversion opening.

[0013] Furthermore, the driving motor, telescopic motor, solenoid valve, ignition device and sealing device are externally connected to a control system.

[0014] By adopting the above technical solution, the equipment of the external control system can intelligently execute the input commands when it is running as a whole, so that the overall automation level of the equipment is improved and production is facilitated.

[0015] In summary, the beneficial technical effects of the present invention are:

[0016] 1. The preheating incineration chamber, rotating rod, conversion opening and sealing device are used to enable the heat storage ceramic body to be heated to the preset temperature at a high speed and stably, avoiding damage caused by instantaneous thermal expansion and contraction caused by rapid heating from low temperature to high temperature;

[0017] 2. The plate and gas through-holes are used to interrupt the air duct so that the organic waste gas can fully contact with the heat storage ceramic body, thereby improving the heat exchange efficiency;

[0018] 3. A sealing plate and a telescopic motor are used to control the sealing plate to automatically close or open the conversion opening according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute part of the specification, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0022] Figure 3 yes Figure 2 A magnified schematic diagram of the structure of part A in the middle;

[0023] Figure 4 It is a schematic diagram of the structure of the thermal storage ceramic body.

[0024] In the figure, 1. insulation shell; 2. heating chamber; 3. preheating incineration chamber; 4. heating incineration chamber; 5. rotating rod; 51. driving motor; 6. heat storage ceramic body; 61. conversion opening; 62. plate body; 63. gas through hole; 7. sealing device; 71. sealing plate; 72. connecting cover plate; 73. linkage column; 74. top plate; 75. telescopic motor; 8. gas input pipe; 81. gas through pipe; 82. gas output pipe. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings.

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-4 , this utility model provides a technical solution:

[0028] The heat preservation shell 1 comprises a heat preservation shell 1, wherein a heating chamber 2, a preheating incineration chamber 3 and a temperature rising incineration chamber 4 are fixedly installed inside the heat preservation shell 1, and the heating chamber 2, the preheating incineration chamber 3 and the temperature rising incineration chamber 4 are prism-shaped and fit together. A rotating rod 5 is provided at the connection of the heating chamber 2, the preheating incineration chamber 3 and the temperature rising incineration chamber 4. A driving motor 51 for driving the rotating rod 5 is fixedly provided on the outer wall of the heat preservation shell 1. A plurality of heat storage ceramic bodies 6 respectively embedded in the heating chamber 2, the preheating incineration chamber 3 and the temperature rising incineration chamber 4 are fixed on the outer edge of the rotating rod 5. The wall is penetrated by a conversion opening 61 for passing the heat storage ceramic. The heating chamber 2, the preheating incineration chamber 3 and the heating incineration chamber 4 are equipped with a sealing device 7 for sealing the conversion opening 61. The outer wall of the heating chamber 2 is connected to a gas input pipe 8 passing through the heat-insulating shell 1 and a gas through pipe 81 respectively connected to the preheating incineration chamber 3 and the heating incineration chamber 4. The outer walls of the preheating incineration chamber 3 and the heating incineration chamber 4 are respectively connected to a gas output pipe 82 passing through the heat-insulating shell 1. The preheating incineration chamber 3 and the heating incineration chamber 4 are provided with an ignition device. The gas input pipe 8, the gas through pipe 81 and the gas output pipe 82 are installed. A solenoid valve is provided. When in use, the organic waste gas enters the heating chamber 2 from the gas input pipe 8, absorbs heat after passing through the heat storage ceramic body 6, and the temperature of the organic waste gas increases and enters the preheating incineration chamber 3 and the heating incineration chamber 4 through the gas pipe 81 respectively. Under the control of the solenoid valve, the scale of the organic waste gas in the preheating incineration chamber 3 is smaller than that in the heating incineration chamber 4. During combustion, the preheating incineration chamber 3 can slowly and evenly heat the internal heat storage ceramic body 6, and the heating incineration chamber 4 can heat the heat storage ceramic body 6 at a high temperature to make its temperature reach a preset 760°C. Then the gas input is closed to start the sealing device 7 to release the internal seal, and the drive motor 51 drives the heat storage ceramic body 6 to burn. The ceramic body 6 rotates and changes its position, and the heat storage ceramic body 6 in the heating chamber 2 enters the preheating incineration chamber 3, the heat storage ceramic body 6 in the preheating incineration chamber 3 enters the heating incineration chamber 4, and the heat storage ceramic body 6 in the heating incineration chamber 4 enters the heating chamber 2. At this time, the sealing device 7 is started to reseal the three chambers, and the heating and incineration treatment process of the organic waste gas is carried out reciprocatingly. Since the heat storage ceramic body 6 has been uniformly preheated in the preheating incineration chamber 3 before entering the heating incineration chamber 4, the heat storage ceramic body 6 can be heated to the preset temperature at a high speed and stably, avoiding the situation where the heat storage ceramic body 6 is damaged by instantaneous thermal expansion and contraction caused by rapid heating from a low temperature state.

[0029] The heat storage ceramic body 6 includes several plates 62 that fit the shape of the inner walls of the heating chamber 2, the preheating incineration chamber 3 and the heating incineration chamber 4. The plates 62 are penetrated by several honeycomb-shaped gas through holes 63. The several plates 62 are fixedly arranged at intervals and parallel to each other on the outer edge of the rotating rod 5. The gas through holes 63 of different plates 62 are staggered with each other. The honeycomb-shaped gas through holes 63 ensure the smooth passage of gas while having a large contact area to improve the heat exchange efficiency between the heat storage ceramic body 6 and the organic waste gas. At the same time, the gas through holes 63 are staggered with each other to make the organic waste gas fully contact with all the plates 62, and can also disrupt the air duct to prevent the organic waste gas from passing through all the plates 62 too quickly, resulting in poor heating effect.

[0030] The sealing device 7 includes a sealing plate 71 that cuts off the conversion opening 61. The sealing plate 71 is respectively slidably engaged with the side walls of the heating chamber 2, the preheating incineration chamber 3 and the heating incineration chamber 4 in the vertical direction. The end of the sealing plate 71 is fixedly provided with a connecting cover plate 72. The center of gravity of the connecting cover plate 72 is vertically provided with a linkage column 73 that passes through the heat-insulating shell 1. The different linkage columns 73 are connected to each other and are provided with a top plate 74. The top wall of the heat-insulating shell 1 is fixedly provided with a telescopic motor 75 that supports the top plate 74. The telescopic shaft of the telescopic motor 75 is fixedly connected to the bottom wall of the top plate 74. When the conversion opening 61 needs to be opened, the telescopic shaft of the telescopic motor 75 extends, driving the top plate 74, the linkage column 73, the connecting cover plate 72 and the sealing plate 71 to rise synchronously. After rising to the specified position, the conversion opening 61 can be fully opened, which is convenient for the position conversion of the heat storage ceramic body 6. Conversely, the extension and contraction of the telescopic shaft drives the sealing plate 71 to close the conversion opening 61.

[0031] The driving motor 51, telescopic motor 75, solenoid valve, ignition device and sealing device 7 are externally connected to a control system. When the equipment of the external control system is in operation as a whole, the input commands can be intelligently executed, thereby improving the overall automation level of the equipment and facilitating production.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An energy-saving and environmentally friendly RTO heat exchanger, comprising a heat-insulating shell (1), characterized in that: A heating chamber (2), a preheating incineration chamber (3) and a temperature-raising incineration chamber (4) are fixedly installed inside the heat-insulating shell (1). The heating chamber (2), the preheating incineration chamber (3) and the temperature-raising incineration chamber (4) are prism-shaped and fit together. A rotating rod (5) is rotatably arranged at the connection between the heating chamber (2), the preheating incineration chamber (3) and the temperature-raising incineration chamber (4). A driving motor (51) for driving the rotating rod (5) is fixedly arranged on the outer wall of the heat-insulating shell (1). A plurality of heat storage ceramic bodies (6) respectively embedded in the heating chamber (2), the preheating incineration chamber (3) and the temperature-raising incineration chamber (4) are fixedly arranged on the outer edge of the rotating rod (5). The side walls of the heating chamber (2), the preheating incineration chamber (3) and the temperature-raising incineration chamber (4) are penetrated by a rotating rod (5). A conversion opening (61) for heat storage ceramics to pass through is provided, and the heating chamber (2), the preheating and incineration chamber (3) and the heating and incineration chamber (4) are matched with a sealing device (7) for sealing the conversion opening (61). The outer wall of the heating chamber (2) is connected to a gas input pipe (8) passing through the heat-insulating shell (1) and a gas through pipe (81) respectively connected to the preheating and incineration chamber (3) and the heating and incineration chamber (4). The outer walls of the preheating and incineration chamber (3) and the heating and incineration chamber (4) are respectively connected to a gas output pipe (82) passing through the heat-insulating shell (1). Ignition devices are provided in the preheating and incineration chamber (3) and the heating and incineration chamber (4). Solenoid valves are installed on the gas input pipe (8), the gas through pipe (81) and the gas output pipe (82).

2. The energy-saving and environmentally friendly RTO heat exchanger according to claim 1, characterized in that: The heat storage ceramic body (6) comprises a plurality of plates (62) conforming to the inner wall shapes of the heating chamber (2), the preheating incineration chamber (3) and the temperature rising incineration chamber (4); the plates (62) are provided with a plurality of honeycomb-shaped gas through holes (63); the plurality of plates (62) are fixedly arranged on the outer edge of the rotating rod (5) in parallel and at intervals; the gas through holes (63) of different plates (62) are staggered with each other.

3. The energy-saving and environmentally friendly RTO heat exchanger according to claim 2, characterized in that: The sealing device (7) includes a sealing plate (71) that cuts off the conversion opening (61). The sealing plate (71) is respectively slidably engaged with the side walls of the heating chamber (2), the preheating incineration chamber (3) and the heating incineration chamber (4) in the vertical direction. A connecting cover plate (72) is fixedly provided at the end of the sealing plate (71). A linkage column (73) that passes through the heat-insulating shell (1) is vertically provided at the center of gravity of the connecting cover plate (72). The different linkage columns (73) are connected to each other and are provided with a top plate (74). A telescopic motor (75) that supports the top plate (74) is fixedly provided on the top wall of the heat-insulating shell (1). The telescopic shaft of the telescopic motor (75) is fixedly connected to the bottom wall of the top plate (74).

4. The energy-saving and environmentally friendly RTO heat exchanger according to claim 3, characterized in that: The driving motor (51), telescopic motor (75), electromagnetic valve, ignition device and sealing device (7) are connected to an external control system.

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