Large-volume electric heating tail gas treatment device

Abstract

The utility model relates to the technical field of tail gas treatment, in particular to a large-volume electric heating tail gas treatment device which comprises a shell, a gas inlet pipe assembly, a main cavity, a reaction cavity, a cooling cavity, a water tank, a connecting cavity, an exhaust cavity and an acid discharge gas pipe, the water tank is respectively connected with a cooling cavity and a connecting cavity through flanges, the cooling cavity is sequentially connected with a reaction cavity, a main cavity body and an air inlet pipe assembly, the connecting cavity is sequentially connected with an exhaust cavity and an acid exhaust pipe through flanges, and the main cavity body is detachably connected with a heating rod; the exhaust cavity comprises an exhaust cavity shell and a filter, the filter is installed in the exhaust cavity shell, and a first spraying pipe and a second spraying pipe are arranged on the connecting cavity. The plasma tail gas washing device solves the problems that the existing plasma tail gas washing effect is not ideal, and the risk that emission exceeds the standard is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to tail gas treatment technical field especially relates to a large volume electric heating tail gas treatment device. BACKGROUND

[0002] Aiming at the plasma combustion formula machine table of solar energy industry, it will produce the tail gas containing multiple harmful substances in the operation process. These tail gas components are complex, in addition to containing conventional nitrogen oxides, carbon monoxide, incomplete combustion of hydrocarbons, it can also include byproducts specific to the plasma combustion process, such as fluorides, chlorides and heavy metal particles, etc. Because the working temperature of plasma combustion technology is high, the volume flow of the generated tail gas is large and the temperature is high, which brings challenges to the traditional tail gas treatment technology.

[0003] In the existing tail gas treatment device, although multiple purification means such as mechanical filtration, chemical absorption, catalytic conversion and water washing are adopted, in actual application, especially when dealing with complex high-temperature tail gas from the plasma combustion formula machine table, the problem of poor water washing effect is still prominent. The following is the reason why the water washing effect of the existing tail gas treatment device is not ideal: the existing spraying system has the problem of improper spraying angle, which causes the water washing liquid to not uniformly cover the entire treatment area, resulting in incomplete local cleaning. The inefficient operation of the spraying system directly affects the water washing effect, so that part of the tail gas is not fully washed, increasing the risk of emission exceeding the standard.

[0004] The utility model discloses a large volume electric heating tail gas treatment device. UTILITY MODEL CONTENTS

[0005] The utility model provides a large volume electric heating tail gas treatment device, aims at solving the problem of ideal water washing effect of existing plasma tail gas, increasing the risk of emission exceeding the standard. Its technical scheme is as follows:

[0006] A kind of large volume electric heating tail gas treatment device, including shell, air inlet pipe assembly, main cavity, reaction cavity, cooling cavity, water tank, connecting cavity, exhaust cavity and acid exhaust pipe;The water tank is respectively connected with cooling cavity and connecting cavity by flange, the cooling cavity is sequentially connected with reaction cavity, main cavity and air inlet pipe assembly, the connecting cavity is sequentially flange connected with exhaust cavity and acid exhaust pipe, and the main cavity is detachably connected with heating rod;The exhaust cavity includes exhaust cavity shell and filter, the filter is installed in exhaust cavity shell interior, first spraying pipe and second spraying pipe are arranged on the connecting cavity.

[0007] On the basis of the above technical solutions, the exhaust cavity shell top is connected with an exhaust cavity top plate, the exhaust cavity top plate bottom is connected with a first exhaust connecting pipe, a filter sub is connected on the first exhaust connecting pipe, the filter sub comprises a filter upper net, a filter cylinder and a filter lower net, and the two ends of the filter cylinder are connected with the filter upper net and the filter lower net respectively.

[0008] On the basis of the above technical solutions, the air inlet pipe assembly comprises an air inlet connecting pipe, an air inlet straight pipe and a bellows pipe; one end of the air inlet straight pipe is connected with the air inlet connecting pipe, the other end is connected with the bellows pipe, and a pressure monitoring pipe is arranged on the air inlet straight pipe.

[0009] Further, the main cavity comprises a main cavity plate and a heating rod mounting seat, the heating rod mounting seat is mounted on the main cavity plate, a plurality of air inlet pipe mounting pipes are arranged on the main cavity plate, and the heating rod is mounted on the heating rod mounting seat.

[0010] Preferably, the cooling cavity comprises a cooling outer pipe and a cooling inner pipe, a cooling cavity is formed between the cooling outer pipe and the cooling inner pipe, a water inlet is arranged on the cooling outer pipe, and the water inlet leads to the cooling cavity.

[0011] Advantages

[0012] Compared with the prior art, the beneficial effects of the present application are: efficient tail gas purification: combining preheating, reaction cavity decomposition, cooling and multi-stage water washing and other functional areas to ensure that harmful substances in the tail gas are purified to meet strict environmental emission standards. Real-time monitoring and protection: temperature detection block is arranged to monitor the temperature, to ensure the safety and stability of the whole treatment process, and to prevent potential risks. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only one embodiment of the present application, and for those skilled in the art, other embodiments can be obtained from the provided drawings without creating creative labor.

[0014] Figure 1 : the structure diagram of the present application;

[0015] Figure 2 : the internal structure diagram of the present application;

[0016] Figure 3 : the front view of the internal structure of the present application;

[0017] Figure 4 : the tail gas flow direction diagram of the present application;

[0018] Figure 5 The structure schematic view of the air inlet pipe assembly;

[0019] Figure 6 The structure schematic view of the main cavity;

[0020] Figure 7 The structure schematic view of the cooling cavity;

[0021] Figure 8 The internal structure schematic view of the cooling cavity;

[0022] Figure 9 : Figure 3 The sectional view of the middle A;

[0023] Figure 10 The structure schematic view of the connecting cavity;

[0024] Figure 11 The structure schematic view of the exhaust cavity;

[0025] Figure 12 The structure schematic view of the filter; DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with the drawings and examples:

[0027] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar tags represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0028] In the description of the utility model, it is necessary to explain that, unless there is explicit provision and limitation, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, or indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] As shown in Figures 1 to 4 A large-volume electric heating tail gas treatment device, characterized in that: including shell 1, air inlet pipe assembly 2, main cavity 3, reaction cavity 4, cooling cavity 5, water tank 6, connecting cavity 7, exhaust cavity 8 and acid exhaust pipe 9, the water tank 6 is connected with cooling cavity 5 and connecting cavity 7 through flange respectively, the cooling cavity 5 is sequentially connected with reaction cavity 4, main cavity 3 and air inlet pipe assembly 2, the connecting cavity 7 is sequentially connected with exhaust cavity 8 and acid exhaust pipe 9 through flange, the main cavity 3 is detachably connected with heating rod, the exhaust cavity 8 includes exhaust cavity shell 81 and filter sub, the filter sub is installed inside the exhaust cavity shell 81, the connecting cavity 7 is provided with first spray pipe 71 and second spray pipe 72, the main cavity 3, reaction cavity 4 and cooling cavity 5 are communicated, and the connecting cavity 7, exhaust cavity 8 and acid exhaust pipe 9 are communicated.

[0031] As shown in Figure 11 And Figure 12 The exhaust cavity shell 81 is connected with exhaust cavity top plate 82 at the top, the exhaust cavity top plate 82 is connected with first exhaust connecting pipe at the bottom, the first exhaust connecting pipe is connected with filter sub, the filter sub includes filter upper net 83, filter cylinder 85 and filter lower net 86, and the two ends of the filter cylinder 85 are connected with filter upper net 83 and filter lower net 86 respectively.

[0032] The tail gas is subjected to up-and-down rotational motion in the exhaust cavity 8, forming an up-and-down gas path, as shown by the dashed line in Figure 4 , which can significantly prolong the residence time of the tail gas inside the treatment device. This helps to ensure that the harmful substances in the tail gas have sufficient time to fully contact the treatment medium on the filter sub, thereby improving the removal efficiency of pollutants. The rotational path helps to disperse the airflow energy entering the exhaust cavity 8, reduces the high-speed impact in local areas, and reduces the risk of small particulate matter gathering to form blockage in a particular position.

[0033] As shown in Figure 5 The air inlet pipe assembly 2 includes air inlet connecting pipe 21, air inlet straight pipe 22 and corrugated pipe 23, one end of the air inlet straight pipe 22 is connected with air inlet connecting pipe 21, the other end is connected with corrugated pipe 23, and pressure monitoring pipe 24 is arranged on the air inlet straight pipe 22.

[0034] The use of corrugated pipe 23 provides good flexibility and bending ability, which can absorb the displacement caused by thermal expansion and contraction or mechanical vibration, preventing the pipeline from being damaged due to stress concentration. This not only increases the flexibility of the system, but also improves the stability and life of the equipment. The combination of the intake connecting pipe 21, the intake straight pipe 22 and the corrugated pipe 23 makes the intake pipe assembly 2 easier to install and disassemble, facilitating daily inspection and maintenance work. Especially in cases where frequent position adjustment or component replacement is required, such a design can significantly reduce the difficulty and time cost of operation. The pressure monitoring pipe 24 provided on the intake straight pipe 22 allows real-time monitoring of the pressure conditions inside the intake pipeline. This is crucial for ensuring the safe operation of the entire tail gas treatment device. By continuously monitoring, abnormal conditions such as blockage, leakage, etc. can be detected in a timely manner, and appropriate measures can be taken to adjust or repair, avoiding potential risks. The straight pipe portion of the intake straight pipe 22 helps to maintain smooth gas flow, reducing turbulence and resistance loss, ensuring that the tail gas can enter the subsequent treatment unit at a relatively stable speed.

[0035] As shown in Figure 6 The main cavity 3 includes a main cavity plate 31 and a heating rod mounting seat 33, the heating rod mounting seat 33 is installed on the main cavity plate 31, and a plurality of intake pipe mounting pipes 32 are arranged on the main cavity plate 31. The heating rod is installed on the heating rod mounting seat 33. The heating rod is directly installed on the main cavity 3, which can ensure that the heat is quickly and uniformly transmitted to the passing tail gas. Compared with external heating, internal heating can more directly act on the target medium, improving the heat exchange efficiency. By electric heating through the heating rod, precise control of the reaction temperature can be achieved. This helps to maintain ideal reaction conditions, promotes the complete decomposition and conversion of harmful substances, and thus improves the effect of tail gas treatment. The intake pipe mounting pipes 32 are distributed along the circumference of the main cavity plate 31, and the intake pipe mounting pipes 32 are installed with the intake pipe assembly 2.

[0036] Many harmful substances such as carbon monoxide, nitrogen oxides, volatile organic compounds, etc. are difficult to effectively react with catalysts or other reaction media at low temperatures. Therefore, by electric heating, the tail gas is heated to an appropriate temperature, which can accelerate the speed of these chemical reactions and improve the efficiency of pollutant conversion. For example, in a catalytic converter, the catalyst usually needs to be within a certain working temperature range to perform best.

[0037] The reaction cavity 4 is specially designed for the chemical reactions between harmful substances in the tail gas and catalysts or other reaction media. By heating the tail gas to an appropriate reaction temperature, the reaction cavity provides the necessary space and conditions for these chemical reactions. The heated tail gas can be decomposed and enters the next process.

[0038] As shown in Figure 7 and Figure 8As shown, the cooling cavity 5 includes a cooling outer tube 51 and a cooling inner tube 52, forming a cooling cavity 50 between them. The cooling outer tube 51 is provided with a water inlet 53, which leads to the cooling cavity 50. The cooling inner tube 52 is also provided with a cooling spray inlet 54. The cooling water is directly filled in the cooling cavity 50 between the cooling outer tube 51 and the cooling inner tube 52, providing a large heat exchange area, so that the cooling water can quickly absorb the heat in the tail gas, ensuring efficient cooling effect. The cooling spray inlet 54 sprays water mist into the cooling cavity 5. The spray in the form of water mist can increase the contact area between the spray and the tail gas, improve the mass transfer efficiency, and the water mist can directly contact with the rising high-temperature tail gas, quickly reduce the temperature of the tail gas through heat exchange, not only can take away the heat, but also can remove part of the harmful gases in the tail gas through physical adsorption, chemical reaction and other ways.

[0039] As shown in Figure 9 The water tank 6 includes a tank body 61 and a water tank spray pipe 62. The water tank 6 is provided with a water tank spray pipe 62, which is communicated with a first water tank spray pipe 63, a second water tank spray pipe 64 and a third water tank spray pipe 65 respectively. A water pump is arranged in the tank body 61, which is used to pump water in the tank body 61. The water tank 6 serves as a cooling water source, which pumps water in the tank body 61 and delivers it to various parts that need to be cooled. This ensures that there is enough cooling water supply during system operation, maintaining the necessary heat exchange efficiency. The water tank spray pipe 62 is communicated with multiple spray pipes, so that the cooling water can be evenly distributed to different cooling areas. For example, the first water tank spray pipe 63, the second water tank spray pipe 64 and the third water tank spray pipe 65 can guide the water flow to the cooling cavity, the connecting cavity or other places that need to be cooled according to specific needs, ensuring that each location can get appropriate cooling effect.

[0040] The first water tank spray pipe 63 is provided with a bidirectional spray inlet, and the second water tank spray pipe 64 and the third water tank spray pipe 65 are provided with a unidirectional spray inlet. The spray inlet is arranged at the entrance of the area that needs more extensive coverage or critical cooling area, for example, the third water tank spray pipe 65 is located below the connecting cavity 7, the second water tank spray pipe 64 is located below the cooling cavity 5, and the first water tank spray pipe 63 is a bidirectional spray inlet that can provide all-round cooling as soon as the tail gas enters the cooling cavity, ensuring rapid cooling. This design helps to reduce local overheating and makes the entire cooling process more uniform. This can ensure that the tail gas enters the water tank 6 and quickly contacts with water.

[0041] As shown in Figure 10 The connecting cavity 7 is provided with a connecting cavity filter screen 73.

[0042] In the connecting chamber 7, the second spray pipe 72 is arranged below the filter screen 73, and the first spray pipe 71 is arranged above the filter screen 73. When the tail gas enters the connecting chamber 7, it first encounters the water droplets sprayed from above. These water droplets can preliminarily wet the particulate matters in the tail gas, making them heavier and more easily settled or captured by the subsequent filter screen. In addition, the water droplets can also dissolve part of the soluble gas, reducing its pollution to the filter screen. After the preliminary water washing, the tail gas passes through the connecting chamber filter screen 73 and is impacted by the lower spray pipe again. This helps to remove the residual particulate matters on the filter screen and prevent them from accumulating to form a blockage. At the same time, the spray at the bottom can further wash the tail gas after passing through the filter screen, ensuring a more thorough purification effect. The design of the upper and lower two layers of spray pipes enables the tail gas to receive the water flow washing effect at different heights.

[0043] The acid exhaust pipe 9 is provided with a temperature detection block. The temperature detection block can monitor the temperature of the gas passing through the acid exhaust pipe 9 in real time. This helps to ensure that the temperature of the exhaust gas is within a safe range, preventing high-temperature gas from causing damage to the environment or subsequent processing equipment.

[0044] The shell 1 is provided with a door body 11, a ventilation port 12 and a control button 13.

[0045] The reaction chamber 4 is provided with a chamber overturning device 41 for overturning the reaction chamber 4. When the reaction chamber 4 needs to be cleaned, after disassembling the connection between the upper and lower reaction chambers 4, the reaction chamber 4 is overturned for cleaning. Its structure is a known existing component for those skilled in the art, and its mechanism will not be described again.

[0046] The reaction chamber 4 is also provided with a chamber L-shaped support plate fixing plate connected to the shell 1.

[0047] In use, the tail gas enters the preheating and heating stage: the tail gas first enters the system through the gas inlet pipe assembly 2. The gas inlet pipe assembly includes a gas inlet connecting pipe 21, a gas inlet straight pipe 22 and a corrugated pipe 23, and a pressure monitoring pipe 24 is arranged on the gas inlet straight pipe. This ensures that the tail gas can enter the processing device stably and safely, and the running state of the system can be monitored by pressure monitoring.

[0048] The tail gas then enters the main chamber 3, in which a heating rod is installed. The heating rod heats the tail gas to an appropriate temperature to promote the subsequent chemical reaction.

[0049] The heated tail gas enters the reaction chamber 4. In this stage, the tail gas is decomposed by heating.

[0050] The exhaust gas after decomposition in the reaction chamber 4 enters the cooling chamber 5. The cooling chamber is filled with cooling water in the cooling cavity 50. The temperature of the exhaust gas is rapidly reduced through heat exchange between the cooling outer tube 51 and the cooling inner tube 52. In addition, the cooling spray port 54 on the cooling inner tube further enhances the cooling effect, ensuring that the exhaust gas reaches the appropriate discharge temperature.

[0051] The cooled exhaust gas enters the water tank 6, where it undergoes preliminary water washing. The water tank 6 is internally provided with a water tank spray pipe 62, and is connected to a first water tank spray pipe 63, a second water tank spray pipe 64, and a third water tank spray pipe 65. Through these spray pipes, water is uniformly sprayed into the exhaust gas, dissolving some soluble exhaust gas components, such as acidic gases such as sulfur dioxide, hydrogen chloride, etc. A water pump extracts water from the water tank for circulation and spraying, ensuring a continuous and effective water washing process.

[0052] After exiting the water tank 6, the exhaust gas continues to enter the connecting chamber 7. Here, a first spray pipe 71 and a second spray pipe 72 are also provided, again performing water washing on the exhaust gas to further remove undissolved particulate matter and other pollutants. At the same time, the filter screen 73 in the connecting chamber captures larger particulate matter, preventing it from entering subsequent processing units.

[0053] After multiple stages of water washing, the exhaust gas enters the exhaust chamber 8. The exhaust chamber contains an exhaust chamber shell 81 and a filter sub, composed of a filter upper screen 83, a filter cylinder 85, and a filter lower screen 86, for separating water and other residual substances from the exhaust gas. The design of the filter sub ensures that the exhaust gas is thoroughly purified before discharge. Adsorbents can be added to the filter sub, and adsorption balls can also be provided on the filter sub to purify the exhaust gas.

[0054] Finally, the treated exhaust gas is discharged from the system through the acid exhaust pipe 9. The pipe is provided with a temperature detection block to monitor the temperature of the exhaust gas, ensuring that it meets the safety discharge standards. In addition, the acid exhaust pipe is also responsible for discharging the wastewater containing acidic substances generated during the water washing process. A special wastewater treatment process is usually provided to handle this liquid to meet environmental protection requirements.

[0055] The liquid in the water tank 6 can be ordinary water or a specially configured washing liquid, depending on the design requirements and processing goals. The water tank 6 is designed with a large capacity to ensure sufficient water or washing liquid supply, meeting the needs of long-term continuous operation. To enhance structural strength and ensure stability during long-term use, the water tank 6 is internally equipped with multiple support ribs. These support ribs are distributed on the water tank wall, effectively dispersing water pressure and external stress, significantly improving the overall rigidity and anti-deformation ability of the water tank. In addition, the design of the support ribs is optimized to neither affect the smooth flow of water nor increase excessive weight while providing sufficient support.

[0056] The utility model is described above by way of example, but the utility model is not limited to the above specific embodiments, and any modification or change based on the utility model belongs to the range of the utility model claimed.

Claims

1. A large volume electrically heated exhaust gas treatment device, characterized by: The utility model relates to a kind of acid gas generator, including shell (1), air inlet pipe assembly (2), main cavity (3), reaction cavity (4), cooling cavity (5), water tank (6), connecting cavity (7), exhaust cavity (8) and acid exhaust pipe (9);The water tank (6) is respectively connected cooling cavity (5) and connecting cavity (7) by flange, the cooling cavity (5) is sequentially connected reaction cavity (4), main cavity (3) and air inlet pipe assembly (2), the connecting cavity (7) is sequentially flange connected exhaust cavity (8) and acid exhaust pipe (9), the main cavity (3) is detachably connected heating rod;The exhaust cavity (8) includes exhaust cavity shell (81) and filter, the filter is installed in exhaust cavity shell (81) inside, the first spray pipe (71) and second spray pipe (72) are provided on the connecting cavity (7).

2. A large volume electrically heated exhaust treatment device according to claim 1, wherein The exhaust cavity shell (81) top connects exhaust cavity top plate (82), the exhaust cavity top plate (82) bottom connects first exhaust connecting pipe, the first exhaust connecting pipe is connected filter, the filter includes filter upper net (83), filter cylinder (85) and filter lower net (86), the both ends of filter cylinder (85) are connected filter upper net (83) and filter lower net (86) respectively.

3. A large volume electrically heated exhaust treatment device according to claim 1, wherein The air inlet pipe assembly (2) includes air inlet connecting pipe (21), air inlet straight pipe (22) and bellows (23);The air inlet straight pipe (22) one end is connected air inlet connecting pipe (21), the other end is connected bellows (23), pressure monitoring pipe (24) is provided on the air inlet straight pipe (22).

4. A large volume electrically heated exhaust treatment device according to claim 1, wherein The main cavity (3) includes main cavity plate (31) and heating rod mounting seat (33), the main cavity plate (31) is installed heating rod mounting seat (33), a plurality of air inlet pipe mounting pipes (32) are provided on the main cavity plate (31), the heating rod mounting seat (33) is installed heating rod.

5. A large volume electrically heated exhaust treatment device according to claim 1, wherein The cooling cavity (5) includes cooling outer tube (51) and cooling inner tube (52), cooling cavity (50) is formed between the cooling outer tube (51) and cooling inner tube (52), water inlet (53) is provided on the cooling outer tube (51), the water inlet (53) leads to cooling cavity (50).

6. A large volume electrically heated exhaust treatment device according to claim 1, wherein The water tank (6) includes tank body (61) and water tank water spraying pipe (62), water tank water spraying pipe (62) is arranged in the water tank (6), the water tank water spraying pipe (62) is communicated with first water tank spray pipe (63), second water tank spray pipe (64), third water tank spray pipe (65) respectively, water pump is arranged in the tank body (61), and the water pump is used to extract water in the tank body (61).

7. A large volume electrically heated exhaust treatment device according to claim 6, wherein Bidirectional spray opening is provided on the first water tank spray pipe (63), unidirectional spray opening is provided on the second water tank spray pipe (64), third water tank spray pipe (65).

8. A large volume electrically heated exhaust treatment device according to claim 1, wherein Connecting cavity filter screen (73) is arranged in the connecting cavity (7).

9. A large volume electrically heated exhaust treatment device according to claim 1, wherein Temperature detection block is arranged on the acid exhaust pipe (9).

10. A large volume electrically heated exhaust treatment device according to claim 1, wherein Door body (11), air vent (12) and control button (13) are arranged on the shell (1).

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