Mixed reaction system for preparing copper-manganese denitration catalyst

Abstract

The utility model provides a mixed reaction system for preparing a copper manganese denitration catalyst, which comprises a reaction kettle, a multi-dimensional stirring mechanism with a plurality of stages of blades is arranged in the reaction kettle, a bottom valve is arranged at the bottom of the reaction kettle, the reaction kettle is connected with a backing material storage tank, a raw material storage tank and an auxiliary storage tank, and the raw material storage tank is connected with the auxiliary storage tank. A mixed aqueous solution of copper nitrate and manganous nitrate is contained in the raw material storage tank, and the controller is used for controlling the backing material storage tank, the raw material storage tank and the auxiliary storage tank to convey materials into the reaction kettle. According to the multi-dimensional stirring device, materials are stirred from multiple dimensions through the multi-dimensional stirring mechanism, so that the mixing uniformity of the materials is greatly improved, active components can be uniformly loaded on a carrier, and the performance stability and activity of a copper-manganese denitration catalyst are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of denitrification catalyst preparation technology, and in particular to a mixed reaction system for preparing copper-manganese denitrification catalysts. Background Technology

[0002] Vanadium-titanium-based denitrification catalysts have an activity temperature window of 320–420℃ and a design life of approximately 24,000 hours, and have been widely used in denitrification projects in coal-fired power plants. In recent years, with the basic completion of ultra-low emission retrofits for coal-fired power plants, denitrification projects in non-power sectors such as steel, cement, and coking have gradually gained attention. The flue gas temperature in non-power industries is typically low (<300℃), making vanadium-titanium-based catalysts unsuitable; low-temperature denitrification catalysts are required.

[0003] Copper-manganese denitrification catalysts are a new type of low-temperature denitrification catalyst that has been extensively studied in recent years. They have advantages such as high low-temperature denitrification activity and no secondary pollution.

[0004] In the preparation of copper-manganese denitration catalysts, the mixing reaction system is a key factor determining product quality and production efficiency. Currently, traditional mixing reaction systems suffer from serious overall performance defects, mainly manifested in: a single stirring method, making it difficult to achieve comprehensive and deep uniform mixing of materials, resulting in uneven distribution of active components on the support, which greatly affects the activity and stability of the catalyst. Utility Model Content

[0005] The purpose of this invention is to provide a mixed reaction system for preparing copper-manganese denitration catalysts to solve the above-mentioned technical problems.

[0006] This invention provides a mixing reaction system for preparing a copper-manganese denitration catalyst, comprising a reaction vessel, a multi-dimensional stirring mechanism with multi-stage blades inside the reaction vessel, a bottom valve at the bottom of the reaction vessel, and a bottom material storage tank, a raw material storage tank, and an auxiliary agent storage tank connected to the reaction vessel. The raw material storage tank contains a mixed aqueous solution of copper nitrate and manganese nitrate. The system also includes a controller for controlling the delivery of materials from the bottom material storage tank, the raw material storage tank, and the auxiliary agent storage tank into the reaction vessel.

[0007] Furthermore, the multi-dimensional stirring mechanism includes a stirring shaft disposed inside the reactor, the top of the stirring shaft extending to the outside of the reactor and connected to a drive motor, and the multi-stage blades mounted on the stirring shaft.

[0008] Furthermore, the multi-stage blades include a propeller blade, a helical blade, and an anchor blade arranged sequentially from bottom to top along the height direction, and the outer edge of the anchor blade scrapes against the inner wall of the reactor.

[0009] Furthermore, the bottom material storage tank contains a mixed solution of titanium dioxide and deionized water. The bottom material storage tank is connected to the reaction vessel via a bottom material connecting pipe. A first valve and a first pump are installed on the bottom material connecting pipe. The first valve and the first pump are electrically connected to the controller.

[0010] Furthermore, the raw material storage tank is connected to the reaction vessel via a raw material connecting pipe, and a second valve and a second pump are installed on the raw material connecting pipe. The second valve and the second pump are electrically connected to the controller.

[0011] Furthermore, the auxiliary agent storage tank contains sodium carbonate solution or potassium carbonate solution, and the auxiliary agent storage tank is connected to the reaction vessel through an auxiliary agent connecting pipe. A third valve and a third pump are installed on the auxiliary agent connecting pipe, and the third valve and the third pump are electrically connected to the controller.

[0012] Furthermore, the reactor is equipped with a pH meter for detecting the pH value of the internal mixed solution, and the pH meter is electrically connected to the third pump via the controller.

[0013] Furthermore, the reactor is connected to a gas cylinder via a gas pipeline, the gas pipeline is equipped with a fourth valve and a gas flow meter, a pressure sensor is installed inside the reactor, and the gas flow meter and the pressure sensor are electrically connected to the fourth valve via the controller.

[0014] Furthermore, a jacket is provided on the outer wall of the reactor, and a heating tube and a temperature sensor are provided inside the jacket near the outer wall of the reactor. The heating tube and the temperature sensor are electrically connected to the controller.

[0015] Furthermore, the heating tube is covered with a heat insulation layer.

[0016] This invention uses a multi-dimensional stirring mechanism to stir materials from multiple dimensions, greatly improving the mixing uniformity of the materials and enabling the active components to be uniformly loaded on the carrier, effectively improving the performance stability and activity of the copper-manganese denitrification catalyst. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the system structure of Embodiment 1 of this utility model;

[0019] Figure 2 This is a schematic diagram of the system structure of Embodiment 2 of this utility model;

[0020] Figure 3 This is a schematic diagram of the system structure of Embodiment 3 of this utility model;

[0021] Explanation of reference numerals in the attached figures:

[0022] In the diagram: 1-Reaction vessel, 11-Bottom valve, 12-pH detector, 13-Pressure sensor, 14-Safety valve, 21-Agitator shaft, 22-Drive motor, 23-Propeller blade, 24-Helical blade, 25-Anchor blade, 3-Bottom material storage tank, 31-Bottom material connecting pipe, 32-First valve, 33-First pump, 4-Raw material storage tank, 41-Raw material connecting pipe, 42-Second valve, 43-Second pump, 5-Auxiliary agent storage tank, 51-Auxiliary agent connecting pipe, 52-The... Three valves, 53-Third pump, 6-Gas cylinder, 61-Gas pipeline, 62-Fourth valve, 63-Gas flow meter, 7-Jacket, 71-Heating tube, 72-Temperature sensor, 73-Insulation layer, 74-Cooling tube, 75-Cooling water pipeline, 76-Cooling water source, 77-Fifth valve, 78-Water pump, 79-Return water tank, 81-Air compressor, 82-Air filter, 83-Gas storage tank, 84-Pressure-resistant pipeline, 85-Pulse valve, 86-Air nozzle; Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1

[0027] like Figure 1 As shown:

[0028] A mixing reaction system for preparing a copper-manganese denitration catalyst includes a reaction vessel 1 and a PLC controller. The reaction vessel 1 is equipped with a multi-dimensional stirring mechanism with multi-stage blades. The reaction vessel 1 also contains a pH meter 12 for detecting the acidity or alkalinity of the mixed solution and a pressure sensor 13 for monitoring the gas pressure inside the reaction vessel 1. The pH meter 12 and the pressure sensor 13 are electrically connected to the PLC controller.

[0029] A safety valve 14 is installed at the top of reactor 1, with its inlet directly connected to the internal space of reactor 1. The safety valve 14 employs a spring-loaded structure, mainly composed of a valve body, valve seat, valve core, spring, and adjusting screw, and features manual control for opening. When the pressure inside reactor 1 exceeds the set safety pressure threshold, the medium pressure acts on the valve core, overcoming the spring force and causing the valve core to open, releasing the gas inside reactor 1, thereby reducing the internal pressure and preventing explosions or other safety accidents caused by excessive pressure. A manual operating lever is installed at the top of reactor 1 near the safety valve 14, connected to the valve core via a linkage mechanism. In case of automatic control failure, emergency pressure relief required but the pressure has not reached the automatic opening threshold, or under specific operational requirements, the operator can operate the manual operating lever to overcome the spring force and forcibly open the valve core, releasing the gas inside reactor 1 and reducing the internal pressure. When the pressure returns to the normal range, the spring force causes the valve core to close again, ensuring the normal operation of reactor 1.

[0030] A bottom valve 11 is installed at the bottom of the reactor 1, through which the material produced after the mixing reaction is discharged.

[0031] The multi-dimensional stirring mechanism includes a stirring shaft 21 disposed inside the reactor 1, the top of the stirring shaft 21 extending to the outside of the reactor 1 and connected to a drive motor 22, and multi-stage blades mounted on the stirring shaft 21.

[0032] The multi-stage blades include a propeller blade 23, a helical blade 24, and an anchor blade 25 arranged sequentially from bottom to top along the height direction. The outer edge of the anchor blade 25 scrapes against the inner wall of the reactor 1.

[0033] The propeller blade 23 can powerfully propel the material to circulate rapidly in the vertical direction, promoting full exchange of materials between the upper and lower layers; the spiral blade 24 can efficiently enhance the radial flow of the material, making the material uniformly mixed in the horizontal direction; the anchor blade 25 can effectively prevent the material from adhering to the inner wall of the reactor 1, ensuring that the material is always in a good mixed state.

[0034] Multiple secondary shafts distributed at different angles can also be installed on the stirring shaft 21, and twisted blades can be installed on the secondary shafts to further stir the material from multiple dimensions, so as to achieve all-round and deep mixing of the material.

[0035] The reactor 1 is connected to a bottom material storage tank 3, a raw material storage tank 4, and an auxiliary agent storage tank 5.

[0036] The bottom material storage tank 3 contains a mixed solution of titanium dioxide and deionized water. The bottom material storage tank 3 is connected to the reactor 1 through the bottom material connecting pipe 31. The bottom material connecting pipe 31 is equipped with a first valve 32 and a first pump 33. The first valve 32 and the first pump 33 are electrically connected to the PLC controller.

[0037] The raw material storage tank 4 contains a mixed aqueous solution of copper nitrate and manganese nitrate. The raw material storage tank 4 is connected to the reaction vessel 1 through the raw material connecting pipe 41. The raw material connecting pipe 41 is equipped with a second valve 42 and a second pump 43. The second valve 42 and the second pump 43 are electrically connected to the PLC controller.

[0038] The auxiliary agent storage tank 5 contains sodium carbonate solution. The auxiliary agent storage tank 5 is connected to the reaction vessel 1 through the auxiliary agent connecting pipe 51. The auxiliary agent connecting pipe 51 is equipped with a third valve 52 and a third pump 53. The third valve 52 and the third pump 53 are electrically connected to the PLC controller.

[0039] pH meter 12 is electrically connected to the third pump 53 via a PLC controller.

[0040] The reactor 1 is connected to a gas cylinder 6 via a gas pipeline 61. A fourth valve 62 and a gas flow meter 63 are installed on the gas pipeline 61. The gas flow meter 63 and the pressure sensor 13 are electrically connected to the fourth valve 62 via a PLC controller.

[0041] A jacket 7 is provided on the outer wall of the reactor 1. A heating tube 71 and a temperature sensor 72 are provided inside the jacket 7 near the outer wall of the reactor 1. The heating tube 71 and the temperature sensor 72 are electrically connected to the PLC controller. The heating tube 71 is covered with a heat insulation layer 73.

[0042] Heating tubes 71 are arranged evenly in a spiral shape within the jacket 7. The heating tubes 71 use high-performance electric heating wires, which can rapidly increase the reaction temperature. Temperature sensor 72 can collect reaction temperature data in real time and transmit it to the PLC controller. Using the PID control algorithm, the heating power of the heating tubes 71 is precisely adjusted based on the set temperature value and the actual collected data, achieving precise control of the reaction temperature.

[0043] In this embodiment, the PLC controller consists of the following parts:

[0044] Central Processing Unit (CPU): As the core of the PLC controller, it undertakes tasks such as data processing, logical judgment, and execution of control instructions. Based on a preset program, the CPU coordinates the operation of multi-dimensional stirring, precise temperature control, intelligent control, and the venting safety valve 14. According to changes in parameters such as reaction temperature and material flow rate, it controls the rotational speed of the multi-stage blades and the operating status of each valve, pump, and heating element 71.

[0045] Memory: This includes program memory and data memory. Program memory stores the system's control program, covering logic codes for material mixing, temperature control, and safety protection; data memory stores real-time data during the reaction process, such as temperature and pressure values, as well as equipment operating status information.

[0046] Input / output (I / O) modules:

[0047] Input module: Receives signals from various sensors, such as the temperature of reactor 1 detected by temperature sensor 72, the pressure monitored by pressure sensor 13, and the material conveying flow rate fed back by flow sensor, and converts them into digital signals that can be processed by PLC controller.

[0048] Output module: Sends control signals to the actuators in the system, such as controlling the start / stop and speed of the drive motor 22 in the multi-dimensional stirring mechanism, the heating power of the heating tube 71, and the control of each valve, each pump body and safety valve 14.

[0049] Communication module: Enables communication between the PLC controller and the host computer (such as an industrial computer or touch screen), transmitting system operating data and fault information to the host computer for convenient monitoring and management by operators; it can also interact with other devices or systems, such as connecting to the production management system to upload production data and realize information management of the production process.

[0050] Power supply module: Provides a stable DC power supply for all components of the PLC controller, ensuring stable system operation and reliable transmission of control signals.

[0051] When this system is running, the following steps are included:

[0052] 1. The PLC controller controls the opening of the first valve 32 and the first pump 33, and the mixed solution of titanium dioxide and deionized water in the bottom material storage tank 3 is injected into the reactor 1 through the bottom material connecting pipe 31. Then, the PLC controller controls the opening of the first valve 32 and the first pump 33.

[0053] 2. The PLC controller controls the heating tube 71 to be energized, and the heating tube 71 heats the reaction vessel 1, heating the solution in the reaction vessel 1 to 60°C;

[0054] 3. The PLC controller starts the drive motor 22 and controls the input speed at 800 rpm;

[0055] 4. The PLC controller controls the pH detector 12, the second valve 42 and the second pump 43 to open, and the mixed solution of copper nitrate and manganese nitrate in the raw material storage tank 4 is injected into the reaction vessel 1 through the raw material connecting pipe 41. Then, the PLC controller controls the second valve 42 and the second pump 43 to close.

[0056] 5. The PLC controller receives and processes the detection data from the pH meter 12. Based on the data processing and logic judgment of the PLC controller, it controls the third valve 52 and the third pump 53 to open. The sodium carbonate solution in the auxiliary agent storage tank 5 is injected into the reaction vessel 1 through the auxiliary agent connecting pipe 51, so that the pH value of the mixed solution in the reaction vessel 1 is controlled at 9. After the pH value is controlled at the set value, the pH meter 12, the third valve 52 and the third pump 53 are closed.

[0057] 6. The PLC controller controls the opening of the fourth valve 62, and the carbon dioxide in the gas cylinder 6 is injected into the reactor 1 through the gas channel. At the same time, the gas flow meter 63 monitors the gas flow in real time; the pressure sensor 13 monitors the gas pressure in the reactor 1 in real time, so that the pressure in the reactor 1 is controlled at 0.15MPa and stirred for 8 hours.

[0058] 7. The PLC controller controls the drive motor 22, the fourth valve 62 and the heating tube 71 to close. The operator uses the manual operating lever on the safety valve 14 to discharge the gas in the reactor 1 and reduce the pressure in the reactor to the normal gas pressure value. The bottom valve 11 is then opened to release the mixed solution in the reactor 1 for subsequent processes.

[0059] This invention utilizes a multi-dimensional stirring mechanism to stir materials from multiple dimensions, greatly improving the mixing uniformity and ensuring that active components are evenly loaded onto the carrier, effectively enhancing the performance stability and activity of the copper-manganese denitration catalyst. Through the cooperation of a PLC controller and a jacket 7 with a heating tube 71, the reaction temperature can be rapidly and accurately raised, providing a stable reaction environment for the preparation of the copper-manganese denitration catalyst and contributing to improved catalyst quality. This further ensures the flexibility and precision of temperature control. The entire reaction process is fully automated, reducing manual intervention, improving production efficiency, and minimizing human error, meeting the needs of large-scale industrial production. The safety valve 14 has both manual and automatic opening modes, providing more reliable overpressure protection for the reactor 1, and can promptly discharge excessive pressure under various complex conditions, preventing safety accidents.

[0060] Example 2

[0061] like Figure 2 As shown, the jacket 7 in this embodiment is also provided with a cooling pipe 74, which is disposed on the outer side of the heat insulation layer 73.

[0062] Spiral heating tubes 71 and cooling tubes 74 are evenly arranged within the jacket 7. The heating tubes 71 can rapidly increase the reaction temperature; the cooling tubes 74 are connected to an external cooling water source 76 via a cooling water pipe 75 to lower the reaction temperature when needed. A fifth valve 77 and a water pump 78, electrically connected to the PLC controller, are installed on the cooling water pipe 75. The water pump 78 provides power for the circulation of cooling water, drawing cooling water from the cooling water source 76 and pressurizing it into the cooling tubes 74.

[0063] The end of the cooling pipe 74 away from the cooling water source 76 is connected to the return water tank 79 through the return water pipe, so that the hot water after absorbing heat flows back, realizing the recycling of cooling water.

[0064] The heating element 71 and cooling element 74 are arranged in inner and outer layers. The heating element 71 is located near the inner layer of the outer wall of the reactor 1, and the cooling element 74 is located near the outer layer of the outer wall of the reactor 1. A heat insulation layer 73 is installed in between to prevent heat interference. Using an advanced PID control algorithm, the heating power of the heating element 71 and the water flow rate of the cooling element 74 are precisely adjusted based on the set temperature value and actual collected data. The temperature control accuracy can reach ±0.2℃, achieving precise control of the reaction temperature and effectively avoiding the adverse effects of temperature fluctuations on the chemical reaction.

[0065] Example 3

[0066] In this embodiment, a pulse air blowing mechanism is added to the raw material connecting pipe 41 and the auxiliary agent connecting pipe 51. Flow sensors electrically connected to the PLC controller are respectively installed at the inlet and outlet ends of the raw material connecting pipe 41 and the auxiliary agent connecting pipe 51.

[0067] The pulse air blowing mechanism includes an air compressor 81, an air filter 82, an air tank 83, a pressure-resistant pipe 84, a pulse valve 85, and a jet nozzle 86 connected in sequence. The jet nozzle 86 is located near the outlet of the second valve 42 and the third valve 52, and the jet nozzle 86 is connected to the raw material connection pipe 41 and the auxiliary agent connection pipe 51.

[0068] A jet nozzle 86 can also be added at the bend in the connection between the raw material connecting pipe 41 and the auxiliary agent connecting pipe 51, near the direction of material inflow. The jet nozzle 86 is used in conjunction with the pulse valve 85. The air compressor 81, air filter 82, and pulse valve 85 are electrically connected to the PLC controller.

[0069] The flow sensor monitors the flow rate of materials in the raw material connection pipe 41 and the auxiliary agent connection pipe 51 in real time. When the flow rate is different or lower than the set normal flow rate threshold, it indicates that there may be a blockage. The flow sensor will then transmit the signal to the PLC controller.

[0070] After receiving an abnormal signal from the flow sensor, the PLC controller analyzes and judges the signal, then generates a command to control the pulse air blowing mechanism. The PLC controller first closes the second valve 42 and the third valve 52. The gas storage tank 83 contains pre-stored gas at a certain pressure. When the PLC controller issues a start command, the pulse solenoid valve opens, and the high-pressure gas in the storage tank 83 is instantly ejected through the nozzle 86, forming a high-speed airflow. This high-speed airflow impacts blockages or residual materials, blowing them away or into the reaction vessel 1, thereby clearing and cleaning the pipeline. The pulse solenoid valve operates according to the pulse frequency and pulse width set by the PLC controller, ensuring the material in the pipeline is thoroughly cleaned through multiple pulse air jets.

[0071] This embodiment effectively solves the problems of material residue and blockage, ensures smooth material transportation, improves preparation efficiency, and reduces product quality differences caused by material residue.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mixed reaction system for preparing a copper-manganese denitration catalyst, characterized in that... The device includes a reaction vessel with a multi-dimensional stirring mechanism with multiple blades inside. A bottom valve is provided at the bottom of the reaction vessel. The reaction vessel is connected to a bottom material storage tank, a raw material storage tank, and an auxiliary agent storage tank. The raw material storage tank contains a mixed aqueous solution of copper nitrate and manganese nitrate. The device also includes a controller for controlling the delivery of materials from the bottom material storage tank, the raw material storage tank, and the auxiliary agent storage tank into the reaction vessel.

2. The mixed reaction system for preparing a copper-manganese denitration catalyst according to claim 1, characterized in that, The multi-dimensional stirring mechanism includes a stirring shaft disposed inside the reactor, the top of the stirring shaft extending to the outside of the reactor and connected to a drive motor, and the multi-stage blades mounted on the stirring shaft.

3. The mixed reaction system for preparing a copper-manganese denitration catalyst according to claim 2, characterized in that, The multi-stage blades include a propeller blade, a helical blade, and an anchor blade arranged sequentially from bottom to top along the height direction, with the outer edge of the anchor blade scraping against the inner wall of the reactor.

4. The mixed reaction system for preparing a copper-manganese denitration catalyst according to claim 1, characterized in that, The bottom material storage tank contains a mixed solution of titanium dioxide and deionized water. The bottom material storage tank is connected to the reaction vessel through a bottom material connecting pipe. A first valve and a first pump are installed on the bottom material connecting pipe. The first valve and the first pump are electrically connected to the controller.

5. The mixed reaction system for preparing a copper-manganese denitration catalyst according to claim 1, characterized in that, The raw material storage tank is connected to the reaction vessel via a raw material connecting pipe. A second valve and a second pump are installed on the raw material connecting pipe. The second valve and the second pump are electrically connected to the controller.

6. The mixed reaction system for preparing a copper-manganese denitration catalyst according to claim 1, characterized in that, The auxiliary agent storage tank contains sodium carbonate solution or potassium carbonate solution. The auxiliary agent storage tank is connected to the reaction vessel through an auxiliary agent connecting pipe. A third valve and a third pump are installed on the auxiliary agent connecting pipe. The third valve and the third pump are electrically connected to the controller.

7. The mixed reaction system for preparing a copper-manganese denitration catalyst according to claim 6, characterized in that, The reactor is equipped with a pH meter for detecting the pH value of the internal mixed solution, and the pH meter is electrically connected to the third pump through the controller.

8. The mixed reaction system for preparing a copper-manganese denitration catalyst according to claim 1, characterized in that, The reactor is connected to a gas cylinder via a gas pipeline. A fourth valve and a gas flow meter are installed on the gas pipeline. A pressure sensor is installed inside the reactor. The gas flow meter and the pressure sensor are electrically connected to the fourth valve via the controller.

9. The mixed reaction system for preparing a copper-manganese denitration catalyst according to claim 1, characterized in that, The outer wall of the reactor is provided with a jacket, and a heating tube and a temperature sensor are provided inside the jacket near the outer wall of the reactor. The heating tube and the temperature sensor are electrically connected to the controller.

10. The mixed reaction system for preparing a copper-manganese denitration catalyst according to claim 9, characterized in that, The heating element is covered with a heat insulation layer.

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