Electromagnetic eddy current heating reaction cavity and process waste gas treatment system

Abstract

The utility model discloses an electromagnetic eddy current heating reaction cavity and a process waste gas treatment system, belongs to the technical field of waste gas treatment, and solves the problem of low process waste gas treatment efficiency caused by lower heating temperature and lower heating speed of an electric heating type process waste gas treatment system in the prior art. The utility model discloses an electromagnetic eddy current heating reaction cavity which comprises a reaction cylinder body, a heating pipe, a cold air flow channel and an alternating current power supply, the heating pipe comprises a process waste gas reaction pipe and a conductive coil wound on the outer wall of the process waste gas reaction pipe, the alternating current power supply is connected with the conductive coil, the process waste gas reaction pipe penetrates through the reaction cylinder in the axial direction of the reaction cylinder, and the conductive coil and the cold air flow channel are located in the reaction cylinder. The device can be used for process waste gas treatment.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and particularly relates to an electromagnetic eddy current heating reaction chamber and a process waste gas treatment system. Background Art

[0002] The existing process waste gas treatment system usually heats the process waste gas to cause thermal decomposition and reduce the content of harmful gases.

[0003] For the heating method, mainly the electric heating type is adopted, and its working principle is to heat and react and decompose the waste gas in the reaction chamber through a resistive heating rod.

[0004] However, limited by the structure and material of the heating rod, the heating temperature and heating speed of this process waste gas treatment equipment are limited, which greatly affects the treatment efficiency of the process waste gas. Summary of the Utility Model

[0005] In view of the above analysis, the utility model aims to provide an electromagnetic eddy current heating reaction chamber and a process waste gas treatment system, which solve the problem that the heating temperature of the electric heating type process waste gas treatment system in the prior art is relatively low and the heating speed is relatively slow, resulting in low treatment efficiency of the process waste gas.

[0006] The purpose of the utility model is mainly realized through the following technical solutions:

[0007] The utility model provides an electromagnetic eddy current heating reaction chamber, which comprises a reaction cylinder body, a heating pipe, a cold air flow channel and an alternating current power supply; the heating pipe comprises a process waste gas reaction pipe and a conductive coil wound around the outer wall of the process waste gas reaction pipe, the alternating current power supply is connected with the conductive coil, the process waste gas reaction pipe axially penetrates through the reaction cylinder body along the axis of the reaction cylinder body, and the conductive coil and the cold air flow channel are located in the reaction cylinder body.

[0008] Further, the number of the cold air flow channels is one, and the number of the process waste gas reaction pipes is multiple; the cold air flow channel is located at the center of the reaction cylinder body and is arranged axially along the reaction cylinder body, and the multiple process waste gas reaction pipes are arranged circumferentially around the cold air flow channel.

[0009] Further, the number of the cold air flow channels is multiple, and the number of the process waste gas reaction pipes is multiple; the cold air flow channels are divided into a central channel and a peripheral channel located at the center of the reaction cylinder body, and the process waste gas reaction pipes and the peripheral channels are evenly arranged in multiple circles around the central channel; at least one circle of peripheral channels is arranged between two adjacent circles of process waste gas reaction pipes.

[0010] Further, the number of both the cold air flow channel and the process waste gas reaction pipe is one, and the cold air flow channel and the process waste gas reaction pipe are symmetrically arranged with respect to the axis of the reaction cylinder body.

[0011] Further, the above electromagnetic eddy current heating reaction chamber further includes a swirl vane disposed in the cold air flow channel, and the swirl vane is located at the air inlet end of the cold air flow channel.

[0012] Further, reaction gas inlet holes are formed in the process waste gas reaction pipe, and the reaction gas inlet holes are located at the air inlet end of the process waste gas reaction pipe. The reaction gas supply unit is communicated with the process waste gas reaction pipe through the reaction gas inlet holes.

[0013] Further, the above electromagnetic eddy current heating reaction chamber further includes a flow disturbing member disposed on the inner wall of the process waste gas reaction pipe, and the flow disturbing member is coaxially arranged with the process waste gas reaction pipe.

[0014] Further, the flow disturbing member is located at the air inlet end of the process waste gas reaction pipe, and along the flowing direction of the process waste gas, the flow disturbing member is located behind the reaction gas inlet hole.

[0015] Further, the inner wall shape of the flow disturbing member is an outwardly convex arc.

[0016] The present utility model also provides a process waste gas treatment system, which includes an electromagnetic eddy current heating reaction chamber, a water tank, and a spray tower that are sequentially connected along the waste gas flowing direction. The electromagnetic eddy current heating reaction chamber is the above electromagnetic eddy current heating reaction chamber.

[0017] Compared with the prior art, the present utility model can at least achieve one of the following beneficial effects:

[0018] A) For the electromagnetic eddy current heating reaction chamber provided by the present utility model, an alternating current is passed through the conductive coil by an alternating current power supply, so that the process waste gas reaction pipe generates an electromagnetic eddy current heating effect, and the waste gas discharged from the process waste gas generating equipment is heated and reacted and decomposed. Based on the electromagnetic induction principle, the eddy current loss under the action of an alternating magnetic field is used to generate heat, which can quickly raise the temperature to a relatively high temperature, greatly improving the heating temperature, heating speed of the process waste gas treatment system and the treatment efficiency of the process waste gas.

[0019] B) For the electromagnetic eddy current heating reaction chamber provided by the present utility model, through the arrangement of the cold air flow channel, the conductive coil and the reaction cylinder body can be quickly cooled and dissipated, preventing the conductive coil from being damaged due to excessive temperature, avoiding overheating, reducing the cooling time of the reaction cylinder body, prolonging the service life of the reaction cylinder body, and improving the maintenance efficiency.

[0020] Other features and advantages of the present utility model will be described in the following specification, and part of them will be obvious from the specification, or will be understood by implementing the present utility model. The purpose and other advantages of the present utility model can be realized and obtained by the structure specifically pointed out in the written specification and the drawings. Description of the Drawings

[0021] The accompanying drawings are only for the purpose of showing specific embodiments and are not considered as limitations on the present utility model. Throughout the drawings, the same reference signs denote the same components.

[0022] Figure 1 FIG. 4 is a schematic structural diagram of an electromagnetic eddy current heating reaction chamber provided in the first embodiment of the present utility model;

[0023] Figure 2 FIG. 5 is an axial sectional view of the electromagnetic eddy current heating reaction chamber provided in the first embodiment of the present utility model;

[0024] Figure 3 FIG. 6 is a schematic structural diagram of a heating tube in the electromagnetic eddy current heating reaction chamber provided in the first embodiment of the present utility model.

[0025] Reference signs:

[0026] 1 - cold air flow channel; 2 - process waste gas reaction tube; 3 - conductive coil; 4 - inner cavity; 5 - cooling sandwich; 6 - waste gas outlet hole; 7 - sandwich inlet hole; 8 - sandwich outlet hole; 9 - swirl vane; 10 - reaction gas inlet hole; 11 - flow disturbing member; 111 - reduced diameter tube; 112 - enlarged diameter tube. Specific embodiments

[0027] The following will specifically describe the preferred embodiments of the present utility model with reference to the accompanying drawings, in which the accompanying drawings form a part of the present utility model and are used together with the embodiments of the present utility model to explain the principle of the present utility model.

[0028] Embodiment 1

[0029] This embodiment provides an electromagnetic eddy current heating reaction chamber. Refer to Figures 1 to 2 , which includes a reaction cylinder body, a heating tube, a cold air flow channel 1 and an alternating current power supply. The heating tube includes a process waste gas reaction tube 2 (for example, a ferromagnetic process waste gas reaction tube made of ferromagnetic material) and a conductive coil 3 wound around the outer wall of the process waste gas reaction tube 2. The alternating current power supply is connected to the conductive coil 3, and an alternating current is passed through the conductive coil 3 by the alternating current power supply to enable the process waste gas reaction tube 2 to generate an electromagnetic eddy current heating effect. The process waste gas reaction tube 2 axially penetrates the reaction cylinder body, the conductive coil 3 and the cold air flow channel 1 are located in the reaction cylinder body, and the inlet end of the process waste gas reaction tube 2 is connected to the waste gas outlet of the process waste gas generating device.

[0030] Compared with the prior art, the electromagnetic eddy current heating reaction chamber provided in this embodiment passes alternating current through the conductive coil 3 via an alternating current power supply, so as to produce the effect of electromagnetic eddy current heating on the process waste gas reaction tube 2, and heat and decompose the waste gas discharged from the process waste gas generating equipment. Based on the principle of electromagnetic induction, the eddy current loss under the action of an alternating magnetic field is used to generate heat, which can quickly raise the temperature to a relatively high temperature, greatly improving the heating temperature, heating speed of the process waste gas treatment system and the treatment efficiency of the process waste gas.

[0031] Meanwhile, through the setting of the cold air flow channel 1, the conductive coil 3 and the reaction cylinder can be quickly cooled and dissipated, preventing the conductive coil 3 from being damaged due to overheating, avoiding overheating, reducing the cooling time of the reaction cylinder, prolonging the service life of the reaction cylinder, and improving the maintenance efficiency.

[0032] Exemplarily, for the first specific arrangement mode of the cold air flow channel 1 and the process waste gas reaction tube 2, the number of the cold air flow channels 1 is one, and the number of the process waste gas reaction tubes 2 is multiple, for example, six. One cold air flow channel 1 is located at the center of the reaction cylinder and arranged along the axial direction of the reaction cylinder, and multiple process waste gas reaction tubes 2 are evenly arranged around the circumference of the cold air flow channel 1. In this way, by adopting the setting mode of multiple process waste gas reaction tubes 2 corresponding to one cold air flow channel 1, on the one hand, setting the cold air flow channel 1 at the central position of the reaction cylinder can improve the cooling efficiency of the cooling air and cool the process waste gas in multiple process waste gas reaction tubes 2 simultaneously. On the other hand, setting multiple process waste gas reaction tubes 2 to process the process waste gas simultaneously can greatly improve the treatment efficiency of the process waste gas.

[0033] For the second mode of the cold air flow channel 1 and the process waste gas reaction tube 2, the number of the cold air flow channels 1 is multiple, and the number of the process waste gas reaction tubes 2 is multiple. Among them, the cold air flow channel 1 is divided into a central channel and a peripheral channel located at the center of the reaction cylinder. The process waste gas reaction tubes 2 and the peripheral channels are evenly arranged in multiple circles around the central channel. Along the direction gradually away from the central channel, the process waste gas reaction tubes 2 and the peripheral channels are alternately arranged. This mode can further improve the cooling efficiency of the cooling air and the treatment efficiency of the process waste gas.

[0034] For the third specific arrangement mode of the cold air flow channel 1 and the process waste gas reaction tube 2, from the perspective of structural simplification, the numbers of both the cold air flow channel 1 and the process waste gas reaction tube 2 are one, and they are symmetrically arranged with respect to the axis of the reaction cylinder.

[0035] In order to extend the flow path of the cooling air in the electromagnetic eddy current heating reaction chamber and thus improve the cooling effect, for the structure of the reaction cylinder, see Figure 2, specifically, it includes an inner cavity 4 and a cooling sandwich layer 5 sleeved outside the inner cavity 4. The process waste gas reaction tube 2 is located in the inner cavity 4. An exhaust gas outlet hole 6 is opened on the bottom wall of the inner cavity 4. The process waste gas reaction tube 2 is communicated with the exhaust gas outlet hole 6 and is communicated with the water tank through the exhaust gas outlet hole 6. There is a gap between the cold air flow channel 1 and the bottom wall of the inner cavity 4. A sandwich intake hole 7 is opened on the inner cavity 4. The inner cavity 4 is communicated with the cooling sandwich layer 5 through the sandwich intake hole 7. A sandwich outlet hole 8 is opened on the cooling sandwich layer 5. The cooling sandwich layer 5 is communicated with the water tank through the sandwich outlet hole 8. In this way, through the settings of the cooling sandwich layer 5, the sandwich intake hole 7 and the sandwich outlet hole 8, the flow path of the cooling air can be greatly extended.

[0036] Exemplarily, the sandwich intake hole 7 is located at the top end of the inner layer, and the sandwich outlet hole 8 is located at the bottom end of the cooling sandwich layer 5.

[0037] In addition, the sandwich outlet hole 8 is provided at the bottom end of the cooling sandwich layer 5, and the exhaust gas outlet hole 6 is provided at the bottom end of the inner cavity 4. The cooling air and the process waste gas enter the water tank in the same flow direction, and the cooling gas can directly transfer heat to the process waste gas to cool the process waste gas after reaction decomposition.

[0038] In order to further extend the flow path of the cooling air in the electromagnetic eddy current heating reaction cavity, the above-mentioned electromagnetic eddy current heating reaction cavity further includes a swirl vane 9 provided in the cold air flow channel 1. The swirl vane 9 is located at the intake end of the cold air flow channel 1. In this way, through the setting of the swirl vane 9, the cooling air generates swirl, and this swirling cooling air can always rotate and flow in the inner cavity 4 and the cooling sandwich layer 5, thereby effectively extending the flow path of the cooling air in the electromagnetic eddy current heating reaction cavity.

[0039] It should be noted that the process waste gas needs reaction gas (for example, oxygen or air including oxygen) to heat and react and decompose. Therefore, a reaction gas intake hole 10 is opened on the above-mentioned process waste gas reaction tube 2. Exemplarily, the reaction gas intake hole 10 is located at the intake end of the process waste gas reaction tube 2, and the reaction gas supply unit is communicated with the inner cavity 4 of the process waste gas reaction tube 2 through the reaction gas intake hole 10.

[0040] Considering that the mixing uniformity of the process waste gas and air in the process waste gas reaction tube 2 will affect the treatment effect of the process waste gas, therefore, the above-mentioned electromagnetic eddy current heating reaction cavity further includes a flow disturbing member 11. See Figure 3 , the flow disturbing member 11 is provided on the inner wall of the process waste gas reaction tube 2 and is coaxially arranged with the process waste gas reaction tube 2. Exemplarily, the flow disturbing member 11 is located at the intake end of the process waste gas reaction tube 2, and along the flow direction of the process waste gas, the flow disturbing member 11 is located behind the reaction gas intake hole 10. Through the setting of the flow disturbing member 11, the fluid state of the process waste gas can be changed, promoting the full mixing of the process waste gas and air, and thus ensuring the fullness of the heating reaction and decomposition.

[0041] Regarding the structure of the spoiler 11, specifically, it includes a reduced-diameter pipe 111 and an enlarged-diameter pipe 112 connected in sequence along the flow direction of the process waste gas. In this way, the reduced-diameter pipe 111 can increase the flow velocity of the process waste gas and the reaction gas, increasing the turbulence degree of the process waste gas and the reaction gas. Then, passing through the enlarged-diameter pipe 112, the flow velocity of the process waste gas and the reaction gas is reduced, prolonging the reaction time of the process waste gas and the reaction gas in the process waste gas reaction pipe 2, ensuring sufficient heating reaction decomposition. First, reducing the diameter and then enlarging the diameter to change the fluid state, enabling the process waste gas and the reaction gas to be fully mixed and the reaction to be more complete.

[0042] Considering that the setting of the spoiler may cause dust accumulation, to reduce the dust accumulation, the inner wall shape of the above spoiler 11 is an outwardly convex arc, minimizing the positions on the inner wall of the spoiler 11 that are prone to dust accumulation, and avoiding the situation where the spoiler 11 is blocked by dust under the working condition of high dust content in the process waste gas.

[0043] Embodiment 2

[0044] This embodiment provides a process waste gas treatment system, including an electromagnetic eddy current heating reaction chamber and a water tank connected in sequence along the process waste gas. Among them, the electromagnetic eddy current heating reaction chamber is the electromagnetic eddy current heating reaction chamber provided in Embodiment 1.

[0045] Compared with the prior art, the beneficial effects of the process waste gas treatment system provided in this embodiment are basically the same as those of the electromagnetic eddy current heating reaction chamber provided in Embodiment 1, and will not be elaborated here one by one.

[0046] As mentioned above, only the specific preferred embodiments of the present invention are described, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An electromagnetic eddy current heating reaction chamber, characterized in that, It includes a reaction cylinder body, heating tubes, a cold air flow channel, and an alternating current power supply; The heating tubes include process waste gas reaction tubes and conductive coils wound around the outer walls of the process waste gas reaction tubes. The alternating current power supply is connected to the conductive coils. The process waste gas reaction tubes penetrate the reaction cylinder body along the axial direction of the reaction cylinder body, and the conductive coils and the cold air flow channel are located inside the reaction cylinder body.

2. The electromagnetic eddy current heating reaction chamber according to claim 1, characterized in that, The number of the cold air flow channels is one, and the number of the process waste gas reaction tubes is multiple; The cold air flow channel is located at the center of the reaction cylinder body and is arranged along the axial direction of the reaction cylinder body. Multiple process waste gas reaction tubes are arranged around the circumference of the cold air flow channel.

3. The electromagnetic eddy current heating reaction chamber according to claim 1, wherein, The number of the cold air flow channels is multiple, and the number of the process waste gas reaction tubes is multiple; The cold air flow channel is divided into a central channel located at the center of the reaction cylinder body and a peripheral channel. The process waste gas reaction tubes and the peripheral channel are evenly arranged in multiple circles outside the central channel; At least one circle of peripheral channels is arranged between two adjacent circles of process waste gas reaction tubes.

4. The electromagnetic eddy current heating reaction chamber according to claim 1, characterized in that The number of both the cold air flow channel and the process waste gas reaction tube is one, and the cold air flow channel and the process waste gas reaction tube are symmetrically arranged with respect to the axis of the reaction cylinder body.

5. The electromagnetic eddy current heating reaction chamber according to claim 1, wherein It further includes a swirl vane arranged inside the cold air flow channel, and the swirl vane is located at the air inlet end of the cold air flow channel.

6. The electromagnetic eddy current heating reaction chamber according to any one of claims 1 to 5, characterized in that, Reaction gas inlet holes are formed on the process waste gas reaction tubes. The reaction gas inlet holes are located at the air inlet ends of the process waste gas reaction tubes. A reaction gas supply unit is communicated with the process waste gas reaction tubes through the reaction gas inlet holes.

7. The electromagnetic eddy current heating reaction chamber according to claim 6, characterized in that, It further includes a flow disturbing member arranged on the inner wall of the process waste gas reaction tube, and the flow disturbing member is coaxially arranged with the process waste gas reaction tube.

8. The electromagnetic eddy current heating reaction chamber according to claim 7, wherein The flow disturbing member is located at the air inlet end of the process waste gas reaction tube, and along the flowing direction of the process waste gas, the flow disturbing member is located behind the reaction gas inlet holes.

9. The electromagnetic eddy current heating reaction chamber according to claim 7, wherein The inner wall shape of the flow disturbing member is an outwardly convex arc.

10. A process waste gas treatment system, characterized in that, It includes an electromagnetic eddy current heating reaction chamber, a water tank, and a spray tower connected in sequence along the flowing direction of the waste gas. The electromagnetic eddy current heating reaction chamber is the electromagnetic eddy current heating reaction chamber according to any one of claims 1 to 9.

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