Non-contact heating waste gas purification device

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a non-contact heating waste gas purification device which comprises a purification box, a heat exchange module arranged in the purification box, an electromagnetic heating module arranged in the purification box and an oxidation reaction module arranged in the purification box, the electromagnetic heating module comprises a heating pipe body, a coil wound on the outer wall of the heating pipe body, a flow guide part arranged in the heating pipe body and a plurality of air scattering plates arranged in the heating pipe body, and the air scattering plates are arranged around the flow guide part; one end of the heating pipe body is connected with the oxidation reaction module, and the other end of the heating pipe body is connected to the heat exchange module. According to the electromagnetic heating module, waste gas reaches the temperature needed by oxygenolysis through electromagnetic heating, safety risks caused by open fire heating are avoided, the heating speed is high, the energy efficiency ratio is high, heating is free of dead corners, and the heating pipe body can be evenly heated.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a non-contact heating waste gas purification device. Background Art

[0002] In industrial manufacturing, waste gas is often generated in the process of producing products in industries such as chemical industry, steel, oil refining, circuit boards, leather, plastics, painting, printing, etc. These waste gases will cause pollution when discharged directly into the atmosphere, especially organic waste gas, which not only affects the environment, but also seriously endangers human health. Therefore, the waste gas needs to be treated before discharge. For organic waste gas, catalytic combustion is generally used at present, that is, the waste gas is introduced into the combustion chamber for oxidation and reduction, and after sufficient heating, the organic components are decomposed under the action of the catalyst, and finally the clean gas is discharged. This process generally introduces fossil fuels such as natural gas for heating, but the use of fossil fuels for open flame heating requires the installation of corresponding mechanical structures such as pipelines and valves for fossil fuels, which will have relatively high safety risks during use. At the same time, the fuel pipeline needs to be frequently inspected and repaired to prevent leakage, which invisibly increases production costs. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a non-contact heating exhaust gas purification device.

[0004] The utility model is implemented by the following scheme:

[0005] A non-contact heating exhaust gas purification device, the non-contact heating exhaust gas purification device comprising a purification box, a heat exchange module arranged inside the purification box, an electromagnetic heating module arranged inside the purification box, and an oxidation reaction module arranged inside the purification box; the electromagnetic heating module comprises a heating tube body, a coil wound around the outer wall of the heating tube body, a guide portion arranged inside the heating tube body, and a plurality of wind dispersion plates arranged inside the heating tube body, the wind dispersion plates being arranged around the guide portion; one end of the heating tube body is connected to the oxidation reaction module, and the other end of the heating tube body is connected to the heat exchange module.

[0006] Furthermore, the exhaust gas purification device includes an exhaust assembly connected to the oxidation reaction module, and the exhaust assembly includes an exhaust pipe connected to the oxidation reaction module, an exhaust valve arranged at the end of the exhaust pipe, and a reflux pipe connected to the exhaust pipe.

[0007] Furthermore, the return duct is also connected to an air supply module, which includes an air supply duct, an air supply valve arranged on the air supply duct, and an air supply fan connected to one end of the air supply duct, and the other end of the air supply duct is connected to the return duct.

[0008] Further, an exhaust port is connected to the exhaust pipe.

[0009] Further, the non-contact heating type waste gas purification device includes an intake assembly, and the intake assembly includes a first intake pipe, an intake fan connected to the intake pipe, and a second intake pipe for connecting the intake fan and the heat exchange area.

[0010] Further, the plurality of air diffuser plates are uniformly arranged in a circumferential array around the guiding portion.

[0011] Further, the guiding portion is conical.

[0012] Further, the air diffuser plate is wavy.

[0013] Further, a heat insulation layer is provided on the outer wall of the heating tube body, and the coil is wound around the outside of the heat insulation layer.

[0014] Further, the heating tube body is connected to the heat exchange module through an adapter pipe.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The electromagnetic heating module of the utility model uses electromagnetic heating to make the waste gas reach the temperature required for oxidative decomposition, avoiding the safety risks caused by using open flame heating. It has a fast heating speed, a high energy efficiency ratio, no heating dead angle, and the heating tube body can be uniformly heated. The guiding portion and the air diffuser plate not only make the gas more uniform, but also increase the heat exchange area to ensure the heating efficiency. On the other hand, the return pipe of the exhaust assembly can return the high-temperature clean gas to other devices for reuse, which is more energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a non-contact heating type waste gas purification device provided by the utility model.

[0018] Figure 2 is a schematic diagram of the electromagnetic heating module of the utility model.

[0019] Figure 3 is a cross-sectional view of the electromagnetic heating module of the utility model.

[0020] The figure includes:

[0021] Purification box 1, heat exchange module 2, electromagnetic heating module 3, heating pipe body 31, coil 32, diversion part 33, air-diffusing plate 34, heat preservation layer 35, adapter pipe 36, oxidation reaction module 4, exhaust assembly 5, exhaust pipe 51, exhaust valve 52, return pipe 53, exhaust port 54, air supply supplement module 6, air supply supplement pipe 61, air supply supplement valve 62, air supply supplement fan 63, air inlet assembly 7, first air inlet pipe 71, air inlet fan 72, second air inlet pipe 73. Detailed implementation mode

[0022] For the convenience of those skilled in the art to understand the present invention, the present invention will be further described in detail below in combination with specific embodiments and drawings.

[0023] Embodiment 1

[0024] Referring to Figures 1 to 3 , a non-contact heating waste gas purification device provided by the present invention, the non-contact heating waste gas purification device includes a purification box 1, a heat exchange module 2 arranged inside the purification box 1, an electromagnetic heating module 3 arranged inside the purification box 1, and an oxidation reaction module 4 arranged inside the purification box 1. The heat exchange module 2 can preheat the waste gas entering the purification box 1 through heat conduction of structures such as heat pipes and heat exchange fins. The oxidation reaction module 4 has a reaction container. After the electromagnetic heating module 3 heats the waste gas, the waste gas reaches the required temperature and starts the oxidation reaction decomposition after entering the oxidation reaction module 4.

[0025] The electromagnetic heating module 3 includes a heating pipe body 31, a coil 32 wound around the outer wall of the heating pipe body 31, a diversion part 33 arranged inside the heating pipe body 31, and a plurality of air-diffusing plates 34 arranged inside the heating pipe body 31. The air-diffusing plates 34 are arranged around the diversion part 33. In this embodiment, the plurality of air-diffusing plates 34 are evenly arranged in a circumferential array around the diversion part 33. One end of the heating pipe body 31 is connected to the oxidation reaction module 4, and the other end of the heating pipe body 31 is connected to the heat exchange module 2. The heating pipe body 31 is connected to the heat exchange module 2 through an adapter pipe 36. The heating pipe body 31 is a metal pipe. The coil 32 forms eddy currents in the heating pipe body 31 through an electromagnetic field to heat the inside of the heating pipe body 31. The waste gas passing through the heating pipe body 31 is heated to the required temperature under heat transfer. In addition, the oxidation reaction module 4 and the heat exchange module 2 are also connected by pipes to direct the purified gas to the heat exchange module 2, so that the high-temperature purified gas can preheat the waste gas introduced into the purification box 1, making full use of thermal energy, being more energy-saving and environmentally friendly. The heat exchange module 2 is also provided with an exhaust pipe 51 for discharging the clean gas.

[0026] The waste gas purification device includes an exhaust assembly 5 connected to the oxidation reaction module 4. The exhaust assembly 5 includes an exhaust pipe 51 connected to the oxidation reaction module 4, an exhaust valve 52 provided at the end of the exhaust pipe 51, and a return pipe 53 connected to the exhaust pipe 51. The exhaust pipe 51 is connected to an exhaust port 54. The return pipe 53 is connected to another waste gas adsorption and concentration device. The waste gas adsorption and concentration device adsorbs organic pollutants in the production waste gas through an adsorption medium, and then takes away the organic pollutants in the adsorption medium through high-temperature gas, thereby concentrating to form high-concentration waste gas. The organic pollutants in the waste gas are fully oxidized and decomposed in the oxidation reaction module 4, and then become qualified purified gas and enter the exhaust pipe 51. Part of the purified gas is discharged from the exhaust pipe 51 to the outside, and part enters the waste gas adsorption and concentration device from the return pipe 53. Since the purified gas still has a relatively high temperature, it can be reused as the desorption high-temperature gas.

[0027] The return pipe 53 is further connected to a make-up air module 6. The make-up air module 6 includes a make-up air pipe 61, a make-up air valve 62 provided on the make-up air pipe 61, and a make-up air fan 63 connected to one end of the make-up air pipe 61. The other end of the make-up air pipe 61 is connected to the return pipe 53. Since the waste gas adsorption and concentration device has requirements for the temperature of the high-temperature gas during desorption, when the temperature is too high, the make-up air module 6 can mix fresh air into the high-temperature purified gas to reduce the temperature of the purified gas, so as to reach the required temperature for desorption.

[0028] The non-contact heating waste gas purification device includes an intake assembly 7. The intake assembly 7 includes a first intake pipe 71, an intake fan 72 connected to the intake pipe, and a second intake pipe 73 for connecting the intake fan 72 and the heat exchange area. The first intake pipe 71 is connected to the waste gas adsorption and concentration device, and the second intake pipe 73 is connected to the heat exchange module 2. The concentrated high-concentration waste gas enters the heat exchange module 2 of the purification box 1 through the intake assembly 7 for preheating.

[0029] A heat preservation layer 35 is provided on the outer wall of the heating tube body 31, and the coil 32 is wound around the outside of the heat preservation layer 35. The heat preservation layer 35 can prevent heat from escaping to the outside of the heating tube body 31, maintain heat to the greatest extent, and make the overall more energy-saving.

[0030] The high-concentration waste gas enters the heat exchange module 2 from the intake assembly 7. The heat exchange module 2 preheats the waste gas. The preheated waste gas enters the electromagnetic heating module 3 and is heated to a preset temperature under the action of electromagnetic heating. Then the high-temperature waste gas enters the oxidation reaction module 4 for oxidation decomposition. Part of the clean gas obtained after decomposition flows to the heat exchange module 2 to preheat the waste gas entering later, part is discharged from the exhaust port 54, and part flows from the return pipe 53 to the waste gas adsorption and concentration device for utilization.

[0031] Example 2

[0032] Reference Figures 1 to 3 , a non-contact heating waste gas purification device provided by the utility model, the non-contact heating waste gas purification device includes a purification box 1, a heat exchange module 2 disposed inside the purification box 1, an electromagnetic heating module 3 disposed in the purification box 1, and an oxidation reaction module 4 disposed inside the purification box 1. The heat exchange module 2 can preheat the waste gas entering the purification box 1 through heat conduction of structures such as heat pipes and heat exchange fins. The oxidation reaction module 4 has a reaction container. After the electromagnetic heating module 3 heats the waste gas, the waste gas reaches the required temperature and starts the oxidation reaction decomposition after entering the oxidation reaction module 4.

[0033] The electromagnetic heating module 3 includes a heating pipe body 31, a coil 32 wound around the outer wall of the heating pipe body 31, a diversion part 33 disposed inside the heating pipe body 31, and a plurality of air-dispersing plates 34 disposed inside the heating pipe body 31. The air-dispersing plates 34 are arranged around the diversion part 33. In this embodiment, the plurality of air-dispersing plates 34 are evenly arranged in a circumferential array around the diversion part 33. One end of the heating pipe body 31 is connected to the oxidation reaction module 4, and the other end of the heating pipe body 31 is connected to the heat exchange module 2. The heating pipe body 31 is connected to the heat exchange module 2 through a transfer pipe 36. The heating pipe body 31 is a metal pipe. The coil 32 forms eddy currents in the heating pipe body 31 through an electromagnetic field to heat the inside of the heating pipe body 31. The waste gas passing through the heating pipe body 31 is heated to the required temperature under heat transfer. In addition, the oxidation reaction module 4 and the heat exchange module 2 are also connected through a pipeline to direct the purified gas to the heat exchange module 2, so that the high-temperature purified gas can preheat the waste gas introduced into the purification box 1, making full use of thermal energy, being more energy-saving and environmentally friendly. The heat exchange module 2 is also provided with an exhaust pipe 51 for discharging the clean gas.

[0034] The waste gas purification device includes an exhaust assembly 5 connected to the oxidation reaction module 4. The exhaust assembly 5 includes an exhaust pipe 51 connected to the oxidation reaction module 4, an exhaust valve 52 provided at the end of the exhaust pipe 51, and a return pipe 53 connected to the exhaust pipe 51. The exhaust pipe 51 is connected to an exhaust port 54. The return pipe 53 is connected to another waste gas adsorption and concentration device. The waste gas adsorption and concentration device adsorbs organic pollutants in the production waste gas through an adsorption medium, and then takes away the organic pollutants in the adsorption medium through high-temperature gas, so as to concentrate and form high-concentration waste gas. The organic pollutants in the waste gas are fully oxidized and decomposed in the oxidation reaction module 4, and then become up-to-standard purified gas and enter the exhaust pipe 51. Part of the purified gas is discharged from the exhaust pipe 51 to the outside, and part enters the waste gas adsorption and concentration device from the return pipe 53. Since the purified gas still has a relatively high temperature, it can be reused as the high-temperature gas for desorption.

[0035] The return pipe 53 is also connected to a makeup air module 6. The makeup air module 6 includes a makeup air pipe 61, a makeup air valve 62 provided on the makeup air pipe 61, and a makeup air fan 63 connected to one end of the makeup air pipe 61. The other end of the makeup air pipe 61 is connected to the return pipe 53. Since the waste gas adsorption and concentration device has requirements for the temperature of the high-temperature gas during desorption, when the temperature is too high, the makeup air module 6 can mix fresh air into the high-temperature purified gas to reduce the temperature of the purified gas, so as to reach the temperature required for desorption.

[0036] The non-contact heating waste gas purification device includes an intake assembly 7. The intake assembly 7 includes a first intake pipe 71, an intake fan 72 connected to the intake pipe, and a second intake pipe 73 for connecting the intake fan 72 and the heat exchange area. The first intake pipe 71 is connected to the waste gas adsorption and concentration device, and the second intake pipe 73 is connected to the heat exchange module 2. The concentrated high-concentration waste gas enters the heat exchange module 2 of the purification box 1 through the intake assembly 7 for preheating.

[0037] The guiding part 33 is conical. The guiding part 33 can guide the waste gas entering the heating pipe body 31 to each air dispersing plate 34, so as to ensure the uniformity of the air flow and the heating effect.

[0038] The air dispersing plate 34 is wavy. The wavy air dispersing plate 34 can extend the time for the gas to flow through, and at the same time the overall heat exchange area is larger, so as to heat the waste gas more fully. In addition, the air dispersing plate 34 also plays a role in fully equalizing the air flow, making the waste gas flow more evenly.

[0039] A heat preservation layer 35 is provided on the outer wall of the heating pipe body 31, and the coil 32 is wound around the outside of the heat preservation layer 35. The heat preservation layer 35 can prevent heat from escaping to the outside of the heating pipe body 31, and keep the heat to the greatest extent, making the whole more energy-saving.

[0040] High-concentration waste gas enters the heat exchange module 2 from the intake assembly 7. The heat exchange module 2 preheats the waste gas. The preheated waste gas enters the electromagnetic heating module 3 and is heated to a preset temperature under the action of electromagnetic heating. Then, the high-temperature waste gas enters the oxidation reaction module 4 for oxidation decomposition. The clean gas obtained after decomposition preheats the waste gas entering later through the heat exchange module 2. After the preheating ends, the temperature of the clean gas decreases. Part of it is discharged from the exhaust port 54, and part of it flows through the return pipe 53 to the waste gas adsorption and concentration equipment for utilization.

[0041] The electromagnetic heating module 3 of the present utility model enables the waste gas to reach the temperature required for oxidation decomposition through electromagnetic heating, avoiding the safety risks caused by using open fire heating. It has a fast heating speed, a high energy efficiency ratio, no heating dead angle, and the heating pipe body 31 can be evenly heated. The flow guiding part 33 and the air dispersing plate 34 not only make the gas more uniform, but also increase the heat exchange area to ensure the heating efficiency. On the other hand, the return pipe 53 of the exhaust assembly 5 can return the high-temperature clean gas to other equipment for reuse, which is more energy-saving and environmentally friendly.

[0042] In the description of the present utility model, it should be understood that the indicated orientation or positional relationship is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model.

[0043] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0044] In the present utility model, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] Although the description of the present utility model is carried out in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included within the scope of the appended claims.

Claims

1. A non-contact heating waste gas purification device, characterized in that, The non-contact heating waste gas purification device includes a purification box, a heat exchange module disposed inside the purification box, an electromagnetic heating module disposed in the purification box, and an oxidation reaction module disposed inside the purification box; the electromagnetic heating module includes a heating tube body, a coil wound around the outer wall of the heating tube body, a flow guiding portion disposed inside the heating tube body, and a plurality of air dispersing plates disposed inside the heating tube body, and the air dispersing plates are arranged around the flow guiding portion; one end of the heating tube body is connected to the oxidation reaction module, and the other end of the heating tube body is connected to the heat exchange module.

2. The non-contact heating exhaust gas purification device according to claim 1, characterized in that, The waste gas purification device includes an exhaust assembly connected to the oxidation reaction module, and the exhaust assembly includes an exhaust pipe connected to the oxidation reaction module, an exhaust valve disposed at the end of the exhaust pipe, and a return pipe connected to the exhaust pipe.

3. The non-contact heating waste gas purification device according to claim 2, characterized in that, The return pipe is further connected with a makeup air module, and the makeup air module includes a makeup air pipe, a makeup air valve disposed on the makeup air pipe, and a makeup air fan connected to one end of the makeup air pipe, and the other end of the makeup air pipe is connected to the return pipe.

4. The non-contact heating waste gas purification device according to claim 2, characterized in that, The exhaust pipe is connected with an exhaust port.

5. The non-contact heating waste gas purification device according to claim 1, characterized in that, The non-contact heating waste gas purification device includes an intake assembly, and the intake assembly includes a first intake pipe, an intake fan connected to the intake pipe, and a second intake pipe for connecting the intake fan and the heat exchange area.

6. The non-contact heating type waste gas purification device according to claim 1, wherein The plurality of air dispersing plates are uniformly arranged in a circumferential array around the flow guiding portion.

7. The non-contact heating type exhaust gas purification device according to claim 1, wherein The flow guiding portion is conical.

8. The non-contact heating type exhaust gas purification device according to claim 1, characterized in that, The air dispersing plate is wavy.

9. The non-contact heating waste gas purification device according to claim 1, characterized in that, A heat preservation layer is arranged on the outer wall of the heating tube body, and the coil is wound around the outside of the heat preservation layer.

10. The non-contact heating exhaust gas purification device according to claim 1, characterized in that, The heating tube body is connected to the heat exchange module through a transfer pipe.

Images