Flue gas treatment device and flue gas treatment system

Abstract

This application provides a flue gas treatment device and system. The flue gas treatment device is used to recover the flue gas generated by the flue gas generating equipment. The flue gas treatment device includes an inlet pipe and a spray assembly. The inlet pipe includes a straight inlet pipe and an inclined inlet pipe connected together. The straight inlet pipe extends perpendicular to the horizontal plane, and a flue gas inlet is provided at the end of the straight inlet pipe away from the inclined inlet pipe. The spray assembly is located in the inclined inlet pipe. One end of the spray assembly is connected to an oil storage device, and the other end is used to spray the flue gas in the inclined inlet pipe. The spray assembly can wash away the material and organic matter that adheres to the inclined inlet pipe after condensation, greatly reducing the risk of material clogging the inclined inlet pipe, thereby reducing production line downtime and manual cleaning difficulty, and fully releasing production line capacity.

Description

Technical Field

[0001] This application relates to the field of waste gas recovery technology, specifically to a flue gas treatment device and flue gas treatment system. Background Technology

[0002] With the rapid development and widespread application of new energy lithium battery technology, the requirements for materials such as positive and negative electrodes in batteries are constantly increasing, leading to continuous iteration and innovation in the heat treatment preparation process of lithium battery negative electrode materials. In actual production, the heat treatment of materials such as positive and negative electrodes generates exhaust gases containing particulate matter and various organic compounds. The rationality and effectiveness of exhaust gas treatment methods have gradually become a core issue facing the industry. The rationality and efficiency of exhaust gas treatment solutions directly determine the continuity and capacity of production, and also affect the environmental compliance rate and standardization.

[0003] In related flue gas treatment devices, for heat treatment equipment such as vertical kettles and rotary kilns, in order to improve the process yield, vertical pipes or boxes with inclined pipes are usually designed at the exhaust port of the equipment. This allows the flue gas mixed with light component particles to pre-settle as the flow velocity decreases when passing through the vertical pipe or box, and then it is introduced into the subsequent flue gas treatment device for collection through the inclined pipe. In the actual production process, due to the decrease in flue gas velocity, the material that has not settled sufficiently may accumulate at the inclined pipe, which can easily block the inclined pipe, causing the flue gas treatment device to shut down and stop production, or even cause safety problems. Utility Model Content

[0004] The purpose of this application is to provide a flue gas treatment device and a flue gas treatment system to solve the technical problem in related flue gas treatment devices that insufficiently settled materials may accumulate and accumulate at the inclined tube, which can easily block the inclined tube and cause the flue gas treatment device to shut down.

[0005] In a first aspect, this application provides a flue gas treatment apparatus, comprising:

[0006] An air intake duct includes a connected straight air intake pipe and an inclined air intake pipe. The straight air intake pipe extends perpendicularly to the horizontal plane, and a flue gas inlet is provided at the end of the straight air intake pipe away from the inclined air intake pipe.

[0007] A spray assembly is provided on the air inlet inclined pipe. One end of the spray assembly is connected to the oil storage device, and the other end is used to spray the flue gas in the air inlet inclined pipe.

[0008] The flue gas treatment device provided in this application includes an intake pipe comprising a connected straight intake pipe and an inclined intake pipe. The straight intake pipe extends perpendicular to the horizontal plane, and a flue gas inlet is located at the end of the straight intake pipe furthest from the inclined intake pipe. A spray assembly is installed in the inclined intake pipe, with one end connected to an oil storage device and the other end used to spray the flue gas in the inclined intake pipe. The spray assembly can flush away condensed materials and organic matter adhering to the inclined intake pipe, greatly reducing the risk of material clogging the inclined intake pipe, thereby reducing production line downtime and manual cleaning difficulty, and fully releasing production line capacity.

[0009] The horizontal angle of the intake oblique pipe is set to 10° to 80°.

[0010] The spray assembly includes a nozzle and a nozzle inlet pipe. The nozzle is at least partially located inside the air inlet pipe, and the nozzle inlet pipe is connected to the oil storage device.

[0011] The nozzle can be arranged horizontally or vertically in the intake oblique pipe.

[0012] The intake pipe is also equipped with a fixing base, which is used to fix the nozzle.

[0013] The flue gas treatment device further includes a temperature sensor, which is located in the intake duct and electrically connected to the controller. The temperature sensor is used to detect the temperature of the flue gas inside the intake duct.

[0014] Secondly, this application provides a flue gas treatment system, which includes a flue gas generating device and the flue gas treatment device, wherein the flue gas generating device is connected to the flue gas inlet of the inlet straight pipe.

[0015] The flue gas treatment system provided in this application includes an intake duct comprising a connected straight intake pipe and an inclined intake pipe. The straight intake pipe extends perpendicular to the horizontal plane, and a flue gas inlet is located at the end of the straight intake pipe furthest from the inclined intake pipe. A spray assembly is installed in the inclined intake pipe, with one end connected to an oil storage device and the other end used to spray the flue gas in the inclined intake pipe. The spray assembly can flush away condensed materials and organic matter adhering to the inclined intake pipe, greatly reducing the risk of material clogging the inclined intake pipe, thereby reducing production line downtime and manual cleaning difficulty, and fully releasing production line capacity.

[0016] The flue gas treatment system further includes a spray tank, the bottom of which is connected to the air inlet inclined pipe, and the top of which is connected to the oil storage device, for secondary spraying of the flue gas.

[0017] The flue gas treatment system further includes a protective gas supply system for introducing protective gas into the flue gas treatment system.

[0018] The flue gas treatment system also includes a flue gas oxygen content analyzer and a controller for monitoring the oxygen content in the flue gas treatment system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a flue gas treatment system provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of an air intake pipe provided in an embodiment of this application. Figure 1 ;

[0022] Figure 3 yes Figure 2 Enlarged structural diagram of region A in the middle;

[0023] Figure 4 This is a schematic diagram of the structure of an air intake pipe provided in an embodiment of this application. Figure 2 ;

[0024] Figure 5 yes Figure 4 A magnified structural diagram of region B in the middle.

[0025] Label Explanation:

[0026] The system includes: a flue gas treatment system 1000, an inlet pipe 10, a straight inlet pipe 11, an inclined inlet pipe 12, a flue gas observation port 13, a nozzle liquid inlet pipe 21, a nozzle 22, a first oil inlet valve 23, a fixed base 24, a transfer pipe 25, a first pipe 251, a second pipe 252, a fixed flange 26, a second spray pipe 31, a second oil inlet valve 32, a spray tank 40, a flue gas ventilation butterfly valve 51, a flue gas centrifugal fan 52, a first air supply pipe 61, a second air supply pipe 62, a first valve assembly 63, a second valve assembly 64, a flue gas oxygen content analyzer 71, a flue gas analysis ball valve 72, a temperature sensor 73, a flue gas generating device 200, and an oil storage device 300. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0029] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of facilitating the description and simplification, and does not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately varied depending on the orientation of the constituent elements being described. Therefore, the use of terms not limited to those described in the specification may be appropriately replaced as needed.

[0030] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the meaning of these terms in this disclosure as appropriate.

[0031] With the rapid development and widespread application of new energy lithium battery technology, the requirements for materials such as positive and negative electrodes in batteries are constantly increasing, leading to continuous iteration and innovation in the heat treatment preparation process of lithium battery negative electrode materials. In actual production, the heat treatment of materials such as positive and negative electrodes generates exhaust gases containing particulate matter and various organic compounds. The rationality and effectiveness of exhaust gas treatment methods have gradually become a core issue facing the industry. The rationality and efficiency of exhaust gas treatment solutions directly determine the continuity and capacity of production, and also affect the environmental compliance rate and standardization.

[0032] In related flue gas treatment devices, for heat treatment equipment such as vertical kettles and rotary kilns, in order to improve the process yield, vertical pipes or boxes with inclined pipes are usually designed at the exhaust port of the equipment. This allows the flue gas mixed with light component particles to pre-settle as the flow velocity decreases when passing through the vertical pipe or box, and then it is introduced into the subsequent flue gas treatment device for collection through the inclined pipe. In the actual production process, due to the decrease in flue gas velocity, the material that has not settled sufficiently may accumulate at the inclined pipe, which can easily block the inclined pipe, causing the flue gas treatment device to shut down and stop production, or even cause safety problems.

[0033] Please refer to Figures 1 to 5 , Figure 1 This is a schematic diagram of the structure of a flue gas treatment system provided in an embodiment of this application. Figure 2 This is a schematic diagram of the structure of an air intake pipe provided in an embodiment of this application. Figure 1 , Figure 3 yes Figure 2 Enlarged structural diagram of region A in the middle. Figure 4 This is a schematic diagram of the structure of an air intake pipe provided in an embodiment of this application. Figure 2 , Figure 5 yes Figure 4 A magnified structural diagram of region B in the middle.

[0034] This application provides a flue gas treatment device to solve the technical problem in related flue gas treatment devices that insufficiently settled materials may accumulate and pile up at the inclined tube, which can easily block the inclined tube and cause the flue gas treatment device to shut down.

[0035] This application provides a flue gas treatment device for recovering the flue gas generated by the flue gas generating device 200. In this embodiment, the flue gas generating device 200 is a heat treatment device for lithium-ion battery anode materials. For example, the flue gas generating device 200 can be a vertical reactor, horizontal reactor, rotary kiln, tunnel kiln, roller kiln, etc. Optionally, the flue gas generating device 200 can also be other equipment that generates flue gas during operation. In other words, the flue gas treatment device of this application can be applied not only to the field of lithium-ion battery manufacturing processes but also to other manufacturing processes; this application does not impose any limitations on this application.

[0036] In the embodiments of this application, the flue gas treatment device includes an inlet pipe 10 and a spray assembly. The inlet pipe 10 includes a connected straight inlet pipe 11 and an inclined inlet pipe 12. The straight inlet pipe 11 extends perpendicular to the horizontal plane. The end of the straight inlet pipe 11 away from the inclined inlet pipe 12 is connected to the flue gas generating device 200. Specifically, a flue gas inlet is provided at the end of the straight inlet pipe 11 away from the inclined inlet pipe 12, and the straight inlet pipe 11 is connected to the flue gas generating device 200 through the flue gas inlet. The spray assembly is provided in the inclined inlet pipe 12. One end of the spray assembly is connected to an oil storage device 300, and the other end is used to spray the flue gas in the inclined inlet pipe 12. In other words, the spray assembly is used to transport the oil in the oil storage device 300 to the inclined inlet pipe 12 and spray the flue gas in the inclined inlet pipe 12.

[0037] The intake straight pipe 11 extends perpendicular to the horizontal plane, allowing for the natural settling of heavy particulate matter in the exhaust gas by gravity. For example, denser heavy particulate matter in the flue gas (such as metal oxides, dust, and high-boiling-point organic particles) settles at the bottom of the intake straight pipe 11 due to gravity, as it passes through the vertical pipe. By utilizing the principle of gravity settling, the intake straight pipe 11 removes approximately a portion of the heavy particulate matter in advance, reducing the processing load on subsequent treatment structures in the flue gas treatment device, preventing large particles from clogging the pipes or accelerating oil contamination. Furthermore, the settled heavy particulate matter in the intake straight pipe 11 can be periodically recovered through the slag discharge port at the bottom of the pipe 11, achieving resource reuse and improving production yield.

[0038] The inclined intake pipe 12 is tilted relative to the horizontal plane, which can ensure that the agglomerated particles and organic matter in the flue gas can slide down along the inclined intake pipe 12 after combining, and avoid some particles in the flue gas remaining in the inclined intake pipe 12 and causing pipe blockage.

[0039] Optionally, the angle of inclination of the intake slant pipe 12 relative to the horizontal plane is in the range of 10°-80°. For example, the angle of inclination of the intake slant pipe 12 relative to the horizontal plane can be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, or other degrees within the range of 10°-80°. This application does not limit this.

[0040] Furthermore, a flue gas observation port 13 is provided at one end of the intake straight pipe 11 near the intake inclined pipe 12. The flue gas observation port 13 can be used to observe the blockage of the intake straight pipe 11 so that the user can clean the intake straight pipe 11 in a timely manner.

[0041] The flue gas treatment device also includes a spray assembly. One end of the spray assembly is connected to the inlet inclined pipe 12, and the other end is connected to the oil storage device 300. The spray assembly is used to transport the oil in the oil storage device 300 to the inlet inclined pipe 12 and spray it. This can wash away the material and organic matter that adheres to the inlet inclined pipe 12 after condensation, greatly reducing the risk of material clogging the inlet inclined pipe 12, thereby reducing production line downtime and manual cleaning difficulty, and fully releasing production line capacity.

[0042] In the flue gas treatment device provided in this application, the inlet pipe 10 includes a connected straight inlet pipe 11 and an inclined inlet pipe 12. The straight inlet pipe 11 extends perpendicular to the horizontal plane. A flue gas inlet is provided at one end of the straight inlet pipe 11 away from the inclined inlet pipe 12. A spray assembly is provided on the inclined inlet pipe 12. One end of the spray assembly is connected to an oil storage device 300, and the other end is used to spray the flue gas in the inclined inlet pipe 12. The spray assembly can flush away the material and organic matter that adheres to the inclined inlet pipe 12 after condensation, greatly reducing the risk of material clogging the inclined inlet pipe 12, thereby reducing production line downtime and manual cleaning difficulty, and fully releasing production line capacity.

[0043] Furthermore, the spray assembly adsorbs flue gas by spraying oil. Utilizing the similarity-dissolves-like property between oils, it can improve the adsorption effect on particulate matter and organic matter such as tar and asphalt fumes in the flue gas. Moreover, the particulate matter and organic matter such as tar and asphalt fumes adsorbed by the oil will not stick to the pipes and inner walls of the flue gas treatment device, eliminating the need for shutdown and production stoppage for pipe cleaning, reducing the labor intensity of workers, improving the working environment for workers, and increasing production capacity.

[0044] Please refer to Figures 1 to 5 In one embodiment, the spray assembly includes a nozzle inlet pipe 21 and a nozzle 22 connected together. One end of the nozzle inlet pipe 21 is connected to an oil storage device 300, and the other end is connected to the nozzle 22. The nozzle 22 is at least partially disposed in the air intake inclined pipe 12 and is used to spray oil into the air intake inclined pipe 12.

[0045] The spray assembly also includes a first oil inlet valve 23. There can be multiple nozzle inlet pipes 21 and first oil inlet valves 23, and the number of nozzle inlet pipes 21 and first oil inlet valves 23 corresponds. Each nozzle inlet pipe 21 is equipped with a first oil inlet valve 23, which controls the flow of oil within the nozzle inlet pipe 21. Optionally, the first oil inlet valve 23 can be a manual valve or an electrically controlled valve. Further, the first oil inlet valve 23 may include, but is not limited to, ball valves, gate valves, and stop valves. It should be noted that all valves described later in this application can be changed according to actual needs, such as ball valves, gate valves, stop valves, etc., and the valve actuation method can be changed, such as manual, pneumatic, electric, etc., which will not be elaborated further.

[0046] Furthermore, the inclined intake pipe 12 is provided with at least one first oil inlet, and the nozzle inlet pipe 21 is connected to the first oil inlet. Further, the spray assembly also includes a nozzle 22 connected to the nozzle inlet pipe 21, with one nozzle 22 corresponding to one nozzle inlet pipe 21, and the number of nozzles 22 corresponding to the number of nozzle inlet pipes 21. The nozzle 22 is at least partially disposed within the inclined intake pipe 12, and is used to spray oil into the inclined intake pipe 12. The nozzle 22 sprays the oil, ensuring its uniform distribution within the inclined intake pipe 12. This uniform oil distribution within the inclined intake pipe 12 ensures that the flue gas in each area can fully contact the oil. Furthermore, because the nozzle 22 disperses the oil into fine droplets and sprays it uniformly within the inclined intake pipe 12, the oil can more thoroughly mix and contact with the solid matter in the flue gas. In this process, the adsorption effect of the oil on the solid matter in the flue gas is enhanced. For example, fine oil droplets more easily encapsulate and adsorb particulate matter in flue gas; for some gaseous organic compounds, oil droplets can also adsorb them through surface tension and intermolecular forces. This enhanced adsorption effect helps improve the purification capacity of flue gas treatment devices, resulting in cleaner emissions. Optionally, solid matter includes, but is not limited to, particulate matter such as dust in the flue gas.

[0047] Optionally, in this embodiment, the number of nozzle inlet pipe 21, first oil inlet valve 23, first oil inlet, and nozzle 22 are equal, and the number of nozzle inlet pipe 21, first oil inlet valve 23, first oil inlet, and nozzle 22 is 1. In other embodiments, the number of nozzle inlet pipe 21, first oil inlet valve 23, first oil inlet, and nozzle 22 may also be 2, 3, 4, 5, 6, or other numbers. This application does not limit this number.

[0048] Optionally, in this embodiment, the nozzle 22 is a spiral nozzle; in other embodiments,

[0049] Please refer to Figures 1 to 5 The nozzle 22 can be installed horizontally or vertically on the intake pipe 12.

[0050] In one embodiment, the nozzle 22 passes through the air inlet oblique pipe 12 and the nozzle 22 and the air inlet oblique pipe 12 are arranged perpendicularly. The spray assembly also includes a fixing base 24, which is disposed on the air inlet oblique pipe 12 and is used to fix the nozzle 22.

[0051] The fixed base 24 is installed on the outer wall of the intake inclined pipe 12 and is located outside the first oil inlet. The fixed base 24 can be used to bear the weight of the nozzle 22 and the impact force when the oil flows, so as to prevent the nozzle 22 from falling off due to vibration or external force (such as when the flue gas velocity in the intake inclined pipe 12 is high, the nozzle 22 may be disturbed by the airflow).

[0052] Optionally, the fixed base 24 may be fixed to the intake slant pipe 12 by means of welding, bolting, or other methods. Optionally, in other embodiments, the nozzle 22 and the intake slant pipe 12 may also be arranged at an angle, and the angle may not be 90°. This application does not impose any restrictions on this.

[0053] In one embodiment, the flue gas treatment device may further include a first seal, which is disposed between the fixed base 24 and the air inlet inclined pipe 12 to prevent oil leakage. The first seal may be a structure such as sealant.

[0054] Please refer to Figures 1 to 5 In one embodiment, the nozzle 22 is horizontally disposed on the intake slant pipe 12; in other words, the nozzle 22 and the intake slant pipe 12 are disposed in parallel.

[0055] It should be noted that the nozzle 22 and the inclined intake pipe 12 are arranged in parallel, and the oil sprayed from the nozzle 22 flows in the same direction as the flue gas. This reduces the impact resistance between the oil and the flue gas, allowing the oil to more smoothly cover the flue gas path. If the flue gas flows downward along the inclined intake pipe 12, the oil, after being sprayed out from the nozzle 22 in the same direction, will move in the same direction as the flue gas at a similar speed, forming a "following each other" effect, increasing the contact time and mixing uniformity between the oil and the flue gas.

[0056] The downward-sloping inlet pipe 12 allows the flue gas to flow naturally downwards. After being sprayed, the oil may settle more quickly due to gravity and airflow, making full contact with pollutants in the flue gas (such as particulate matter and oil mist), thus improving the adsorption or washing effect. When the nozzle 22 and the inlet pipe 12 are arranged in parallel, the oil sprayed out from the nozzle 22 in the forward direction has a certain impact force, which can simultaneously clean highly adhesive substances and prevent highly adhesive substances from adhering to the inlet pipe 12 and causing blockages.

[0057] Furthermore, when the nozzle 22 and the intake pipe 12 are arranged in parallel, the oil flows downwards, which can reduce the risk of droplets lingering at the outlet of the nozzle 22 and reduce blockage caused by the accumulation of liquid and solid impurities.

[0058] Please refer to Figures 1 to 5 In one embodiment, the spray assembly includes a transfer pipe 25 and a fixed flange 26. The transfer pipe 25 includes a first pipe 251 and a second pipe 252 that are bent and connected. The first pipe 251 is connected to the nozzle inlet pipe 21, and the second pipe 252 is connected to and fixes the nozzle 22. The fixed flange 26 is provided on the air inlet inclined pipe 12 and is used to fix the transfer pipe 25.

[0059] In this embodiment, the first pipe 251 and the second pipe 252 are bent and connected, and the first pipe 251 is perpendicular to the intake pipe 12, while the second pipe 252 is parallel to the intake pipe 12, so that the nozzle 22 can be parallel to the intake pipe 12.

[0060] Furthermore, in this embodiment, the spray assembly also includes an inlet connector and an outlet connector. The inlet connector is used to connect the first pipe 251 and the nozzle inlet pipe 21, and the outlet connector is used to connect the second pipe 252 and the nozzle 22.

[0061] Please refer to Figures 1 to 5 This application also includes a flue gas treatment system 1000, which includes a flue gas generating device 200 and a flue gas treatment device. The flue gas generating device 200 is connected to the flue gas inlet of the inlet straight pipe 11.

[0062] In the flue gas treatment system 1000 provided in this application, the inlet pipe 10 includes a connected straight inlet pipe 11 and an inclined inlet pipe 12. The straight inlet pipe 11 extends perpendicular to the horizontal plane, and a flue gas inlet is provided at one end of the straight inlet pipe 11 away from the inclined inlet pipe 12. A spray assembly is provided on the inclined inlet pipe 12, with one end connected to an oil storage device 300 and the other end used to spray the flue gas in the inclined inlet pipe 12. The spray assembly can flush away the condensed material and organic matter adhering to the inclined inlet pipe 12, greatly reducing the risk of material clogging the inclined inlet pipe 12, thereby reducing production line downtime and manual cleaning difficulty, and fully releasing production line capacity.

[0063] Please refer to Figures 1 to 5 In one embodiment, the flue gas treatment system 1000 further includes a spray tank 40, the bottom of which is connected to the air inlet inclined pipe 12, and the top of which is connected to the oil storage device 300, for secondary spraying of the flue gas in the spray tank 40.

[0064] Furthermore, in one embodiment, the flue gas treatment system 1000 further includes a conveying component, the two ends of which are respectively connected to the oil storage device 300 and the spray tank 40. The conveying component is used to convey the oil in the oil storage device 300 to the spray tank 40 for spraying.

[0065] Specifically, the spray tank 40 includes a second flue gas inlet located on the side wall of the tank body. The second flue gas inlet is connected to the air inlet pipe 10, allowing the flue gas in the air inlet pipe 10 to enter the spray pipe. Optionally, in this embodiment, the air inlet pipe 10 and the second flue gas inlet of the spray tank 40 are connected by a flange.

[0066] Furthermore, the conveying assembly includes at least one second spray pipe 31 and at least one second oil inlet valve 32. The number of second spray pipes 31 and second oil inlet valves 32 corresponds, and each second spray pipe 31 is provided with a second oil inlet valve 32. The second oil inlet valve 32 can control the flow of oil in the second spray pipe 31. Optionally, the second oil inlet valve 32 can be a manual valve or an electrically controlled valve. Further optionally, the second oil inlet valve 32 includes, but is not limited to, a ball valve, a gate valve, a stop valve, etc.

[0067] Furthermore, the top of the spray tank 40 is provided with at least one second oil inlet, and the second spray pipe 31 is connected to the second oil inlet. Further, the conveying assembly also includes a second nozzle connected to the second spray pipe 31, with one second nozzle corresponding to one second spray pipe 31, the number of the first and second nozzles corresponding to the number of the second spray pipes 31. The second nozzle is located inside the spray tank 40, at the top of the spray tank 40 and corresponding to the second oil inlet. The oil from the second spray pipe 31 is sprayed into the spray tank 40 through the second nozzle, which sprays the oil, ensuring uniform distribution of the oil within the spray tank 40. This uniform oil distribution within the spray tank 40 ensures that the flue gas in each area can fully contact the oil. Furthermore, because the second nozzle disperses the oil into fine droplets and sprays them evenly within the spray tank 40, the oil can mix and contact with the solid matter in the flue gas more thoroughly. In this process, the adsorption effect of the oil on the solid matter in the flue gas is enhanced. For example, fine oil droplets more easily encapsulate and adsorb particulate matter in flue gas; for some gaseous organic compounds, oil droplets can also adsorb them through surface tension and intermolecular forces. This enhanced adsorption effect helps improve the flue gas treatment system's purification capacity, resulting in cleaner emissions.

[0068] Optionally, in this embodiment, the number of the second spray pipe 31, the second oil inlet valve 32, the second oil inlet, and the second nozzle are equal, and the number of the second spray pipe 31, the second oil inlet valve 32, the second oil inlet, and the second nozzle is 4. In other embodiments, the number of the second spray pipe 31, the second oil inlet valve 32, the second oil inlet, and the second nozzle may be 1, 2, 3, 5, 6, or other numbers. This application does not limit this number.

[0069] Furthermore, in this embodiment, there are four second spray pipes 31, second oil inlet valves 32, second oil inlets, and second nozzles. The four second nozzles are arranged around the top of the spray pipe, which enables the oil to be sprayed to all corners of the spray tank 40 in a more uniform manner, allowing the flue gas to be fully mixed with the oil throughout the entire spray tank 40, thereby improving the removal effect of solid matter in the flue gas.

[0070] The spray assembly sprays the flue gas in the inlet inclined pipe 12, and the conveying assembly sprays the flue gas in the spray tank 40. In other words, the flue gas generated by the flue gas generating device 200 first passes through the inlet inclined pipe 12 and is sprayed by the oil in the spray assembly. The remaining flue gas then enters from bottom to top through the flue gas inlet of the spray tank 40 and is sprayed by the oil in the conveying assembly. The flue gas undergoes secondary cooling and adsorption, which can fully adsorb most of the particulate matter and organic matter in the flue gas, thereby improving the adsorption efficiency of the flue gas treatment system 1000.

[0071] Please refer to Figures 1 to 5 In one embodiment, the spray tank 40 further includes a flue gas outlet, and the flue gas treatment system 1000 further includes a flue gas ventilation butterfly valve 51. The flue gas outlet is connected to the flue gas ventilation butterfly valve 51 via a flange, a pipe, and a tee port for connecting the spray tank 40 rupture disc is provided at the pipe confluence, which can be connected to another rupture disc to meet the pressure relief requirements of the pipe under extreme operating conditions. The flue gas ventilation butterfly valve 51 can be manually adjusted in opening as needed to ensure that the flue gas from the spray tank 40 has sufficient traction force.

[0072] The flue gas that has not been fully adsorbed in the spray tank 40 will be discharged from the flue gas outlet and pass through the flue gas ventilation butterfly valve 51, and then through the flue gas centrifugal fan 52. The rear end of the flue gas centrifugal fan 52 can be connected to a device such as an incinerator or an activated carbon adsorption box to remove the residual pollutants and odors in the flue gas by means of activated carbon adsorption or incineration in the incinerator, and then discharged after meeting the environmental emission requirements.

[0073] Among them, the flue gas centrifugal fan 52 is frequency-adjustable, which can keep the air pressure in the pipeline fluctuating within a reasonable range, so that the amount of flue gas generated and the amount of flue gas treated are basically matched.

[0074] Please refer to Figures 1 to 5 In one embodiment, the flue gas treatment system 1000 further includes a protective gas supply system for introducing protective gas into the flue gas treatment system. Specifically, the protective gas supply system includes a gas storage component and a gas supply component. The gas storage component stores protective gas, and the gas supply component is connected to the inlet pipe 10 and the spray tank 40, respectively, for delivering protective gas to the inlet pipe 10 and the spray tank 40.

[0075] Furthermore, the gas supply assembly includes a first gas supply pipe 61 and a second gas supply pipe 62. The first gas supply pipe 61 is connected to the inlet inclined pipe 12 and is used to supply protective gas to the inlet inclined pipe 12. The second gas supply pipe 62 is connected to the spray tank 40 and is used to supply protective gas to the spray tank 40.

[0076] Furthermore, the gas supply assembly also includes a first valve assembly 63 and a second valve assembly 64. The first valve assembly 63 is disposed on the first gas supply pipe 61 and can be used to control the gas supply status of the first gas supply pipe 61, thereby controlling whether protective gas is supplied to the inlet inclined pipe 12. The second valve assembly 64 can be used to control the gas supply status of the second gas supply pipe 62, thereby controlling whether protective gas is supplied to the spray tank 40.

[0077] It should be noted that the first valve assembly 63 includes a gas shut-off valve and a gas ball valve. The gas shut-off valve can be manually operated, or it can be used with a glass rotor flow meter at the downstream end under normal operating conditions. The gas ball valve can be electrically operated, normally closed under normal operating conditions, and normally open after power failure. The two are connected in parallel. The purpose of the gas shut-off valve is to allow manual opening to introduce protective gas in case the gas ball valve connected in parallel fails under extreme conditions. Under normal operating conditions, a certain amount of protective gas can also be introduced by adjusting the flow meter. Optionally, the protective gas includes, but is not limited to, nitrogen, argon, etc. Optionally, the second valve assembly 64 has the same structure as the first valve assembly 63, which will not be described in detail here.

[0078] Please refer to Figures 1 to 5 In one embodiment, the flue gas treatment system 1000 further includes a flue gas oxygen content analyzer 71 and a controller. The flue gas oxygen content analyzer 71 and the controller are electrically connected. The flue gas oxygen content analyzer 71 is used to monitor the oxygen content in the flue gas treatment system 1000. Specifically, in this embodiment, the flue gas oxygen content analyzer 71 is connected to the spray tank 40, and the controller is electrically connected to the gas supply assembly. The flue gas oxygen content analyzer 71 is used to detect the oxygen content of the flue gas in the spray tank 40, and the controller controls the gas supply assembly based on the detection signal from the flue gas oxygen content analyzer 71.

[0079] The flue gas oxygen content analyzer 71 can be interlocked with the first valve assembly 63 and the second valve assembly 64. In other words, when the oxygen content of the flue gas in the spray tank 40 is greater than or equal to the set value, the controller can open the first valve assembly 63 and the second valve assembly 64 according to the detection signal of the flue gas oxygen content analyzer 71, and deliver protective gas to each pipeline of the flue gas treatment system 1000 to replace the oxygen until the oxygen content in the spray tank 40 is less than the set value, and then close the controller to prevent combustion or explosion accidents from occurring in the flue gas treatment system 1000.

[0080] Furthermore, the flue gas treatment system 1000 also includes a flue gas analysis ball valve 72, which is located between the flue gas oxygen content analyzer 71 and the spray tank 40, and is connected to the flue gas oxygen content analyzer 71 via a pipeline. The flue gas analysis ball valve 72 can control the flow of flue gas, so as to control the flue gas to be disconnected when the filter of the gas purification device upstream of the flue gas oxygen content analyzer 71 needs to be replaced.

[0081] Please refer to Figures 1 to 5 In one embodiment, the flue gas treatment device further includes a temperature sensor 73, which is disposed in the intake pipe 12 and electrically connected to a controller. The temperature sensor 73 is used to detect the temperature of the flue gas in the intake pipe 12, and the controller controls the gas supply component according to the detection signal of the temperature sensor 73.

[0082] The first temperature sensor 73 can be interlocked with the first valve assembly 63 and the second valve assembly 64. In other words, when the temperature monitored by the temperature sensor 73 in the intake manifold 12 is greater than or equal to the flash point / ignition point of the oil used (generally reduced by 30-40°C depending on the actual situation; for example, if the flash point of the oil is 160°C and the ignition point is 168°C, the alarm response value is set to 120°C), the controller automatically opens the first valve assembly 63 and the second valve assembly 64, introducing protective gas into each pipe of the flue gas treatment system 1000 to reduce the oxygen content in each pipe of the flue gas treatment system 1000. Furthermore, if the temperature monitored by the temperature sensor 73 in the intake manifold 12 continues to rise, the flow rate of the protective gas is maintained; if the temperature drops, the flow rate of the protective gas is reduced; if the temperature returns to the normal range, the protective gas supply is shut off.

[0083] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0084] The above description represents some embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A flue gas treatment device, characterized in that, include: An air intake duct includes a connected straight air intake pipe and an inclined air intake pipe. The straight air intake pipe extends perpendicularly to the horizontal plane, and a flue gas inlet is provided at the end of the straight air intake pipe away from the inclined air intake pipe. A spray assembly is provided on the air inlet inclined pipe. One end of the spray assembly is connected to an oil storage device, and the other end is used to spray the flue gas in the air inlet inclined pipe.

2. The flue gas treatment device according to claim 1, characterized in that, The horizontal angle of the intake oblique pipe is set to 10°~80°.

3. The flue gas treatment device according to claim 1, characterized in that, The spray assembly includes a nozzle and a nozzle inlet pipe. The nozzle is at least partially located inside the air inlet pipe, and the nozzle inlet pipe is connected to the oil storage device.

4. The flue gas treatment device according to claim 3, characterized in that, The nozzle can be installed horizontally or vertically on the intake duct.

5. The flue gas treatment device according to claim 4, characterized in that, The intake oblique pipe is also provided with a fixing base, which is used to fix the nozzle.

6. The flue gas treatment device according to claim 1, characterized in that, The flue gas treatment device also includes a temperature sensor, which is located in the intake duct and electrically connected to a controller. The temperature sensor is used to detect the temperature of the flue gas inside the intake duct.

7. A flue gas treatment system, characterized in that, The flue gas treatment system includes a flue gas generating device and a flue gas treatment apparatus according to any one of claims 1-6, wherein the flue gas generating device is connected to the flue gas inlet of the inlet straight pipe.

8. The flue gas treatment system according to claim 7, characterized in that, The flue gas treatment system also includes a spray tank, the bottom of which is connected to the air inlet inclined pipe, and the top of which is connected to the oil storage device, for secondary spraying of the flue gas.

9. The flue gas treatment system according to claim 7, characterized in that, The flue gas treatment system also includes a protective gas supply system for introducing protective gas into the flue gas treatment system.

10. The flue gas treatment system according to claim 7, characterized in that, The flue gas treatment system also includes a flue gas oxygen content analyzer and a controller for monitoring the oxygen content in the flue gas treatment system.

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