Tail gas treatment unit for nitroguanidine production
By designing a nitroguanidine production exhaust gas treatment unit including collection box, spray tank, activated carbon box and combustion chamber, the problem of failure to meet the exhaust gas treatment standards during the nitroguanidine production process is solved, and the effective treatment and environment of exhaust gas are achieved environmental protection.
Patent Information
- Application Number
- CN202421251684.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The exhaust gas produced during the production of nitroguanidine contains nitrogen oxides, ammonia and other volatile organic compounds. Traditional exhaust gas treatment methods cannot effectively treat these harmful gases, resulting in environmental pollution and emissions not meeting standards.
A exhaust gas treatment unit for the production of nitroguanidine is designed, including a collection box, a spray tank, an activated carbon box and a combustion chamber. The exhaust gas is sprayed through the ammonia water pipe and tap water pipe on the top of the spray tank to remove nitrogen oxides and ammonia gas. The treated gas is then passed into the activated carbon box, and the remaining organic compounds are adsorbed using the activated carbon. Fresh air heat exchanger is used to desorb saturated activated carbon, restore its adsorption function, and burn organic compounds through high temperatures through the combustion chamber to decompose into carbon dioxide and water vapor.
It effectively removes nitrogen oxides, ammonia and other organic compounds in the exhaust gas, ensures that the exhaust gas treatment meets standards, avoids environmental pollution, improves the utilization rate of activated carbon, and realizes automated operations and improves work efficiency.
Smart Images
Figure CN222510823U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tail gas treatment, and in particular to a tail gas treatment unit for nitroguanidine production. Background Art
[0002] The tail gas produced during the preparation of nitroguanidine mainly includes nitrogen oxides (such as NO and NO2), ammonia (NH3) and other volatile organic compounds (VOCs). These exhaust gas components have potential hazards to human health and the environment. Traditional tail gas treatment methods often cannot effectively treat these tail gases, which not only pollutes the environment, but also may not meet the requirements of emission regulations. Therefore, it is particularly important to develop a tail gas treatment unit for nitroguanidine production. Utility Model Content
[0003] The present application provides a tail gas treatment unit for nitroguanidine production, which mainly includes a collection box, a spray tank, an activated carbon box and a combustion chamber. The ammonia pipe and the tap water pipe on the top of the spray tank are used to spray the tail gas entering the spray tank in turn, so that it reacts with harmful gases such as nitrogen oxides and ammonia in the tail gas respectively, and then the treated gas is passed into the activated carbon box, and the activated carbon is used to adsorb other organic compounds contained in the tail gas. The tail gas treatment is effectively completed through a series of tail gas treatment units to avoid environmental pollution caused by substandard tail gas treatment. The treatment is more environmentally friendly and effectively treats the tail gas to meet the emission requirements. The desorption saturated activated carbon is desorbed by a fresh air heat exchanger. The fresh air heat exchanger heats the air and then enters the activated carbon box to purge the VOCs organic compounds adsorbed on the activated carbon, so that the adsorption function of the activated carbon is restored and recycled, thereby improving the utilization rate of the activated carbon.
[0004] The present application provides a tail gas treatment unit for nitroguanidine production, comprising: a collecting box, a spray tank, an activated carbon box and a combustion chamber, wherein the side wall of the collecting box is connected to an air inlet pipe, on which an electromagnetic valve 1 is arranged, the top of the collecting box is connected to an air supply pipe 1, which is connected to a dust collector, the side wall of the dust collector is connected to a spray tank, a spray pipe is arranged on the top of the spray tank, an atomizing nozzle is connected to the bottom of the spray pipe, one side wall of the spray pipe is connected to an ammonia pipe, on which an electromagnetic valve 2 is arranged, the ammonia pipe is connected to an ammonia tank, the other side wall of the spray pipe is connected to a tap water pipe, on which an electromagnetic valve 3 is arranged, the tap water pipe is connected to the tap water tank, the top of the spray tank is connected to one end of the air supply pipe 2, on which an electromagnetic valve 4 is arranged, the other end of the air supply pipe 2 is connected to an activated carbon box, an activated carbon layer is arranged in the activated carbon box, an exhaust pipe is arranged on the top of the activated carbon box, and an electromagnetic valve 5 is arranged on the exhaust pipe. An exhaust gas detector is arranged on the exhaust pipe, a fresh air heat exchanger is connected to the bottom of the side wall of the activated carbon box, an air inlet pipe is connected to the side wall of the fresh air heat exchanger, the air inlet pipe is connected to an induced draft fan, the top of the side wall of the activated carbon box is connected to the gas delivery pipe 3, the gas delivery pipe 3 is provided with a solenoid valve 6, the gas delivery pipe 3 is connected to the combustion chamber, an ignition system is arranged on the top of the combustion chamber, a fuel bottle is arranged on one side wall of the combustion chamber, the fuel bottle is provided with a fuel nozzle, the fuel nozzle runs through the side wall of the combustion chamber, the fuel bottle is connected to a fuel pipe, the fuel pipe is provided with a solenoid valve 7, the fuel pipe is connected to a fuel tank, an oxygen bottle is arranged on the other side wall of the combustion chamber, the oxygen bottle is provided with an oxygen nozzle, the oxygen nozzle runs through the side wall of the combustion chamber, the oxygen bottle is connected to an oxygen pipe, the oxygen pipe is provided with a solenoid valve 8, the oxygen pipe is connected to an oxygen tank, a return air pipe is arranged on the side wall of the combustion chamber, the return air pipe is provided with a solenoid valve 9, and the return air pipe is connected to the fresh air heat exchanger;
[0005] The dust collector, spray tank, exhaust gas detector, fresh air heat exchanger, induced draft fan, ignition system and each solenoid valve are electrically connected to the PLC controller.
[0006] Furthermore, a drain pipe is arranged at the bottom of the side wall of the spray tank, and a solenoid valve 10 is arranged on the drain pipe.
[0007] Furthermore, a plate frame is welded inside the activated carbon box, and the activated carbon is placed on the plate frame.
[0008] Furthermore, a catalyst bed is arranged inside the combustion chamber, and a catalyst is placed on the catalyst bed.
[0009] Furthermore, the PLC controller is provided with a plurality of operation buttons.
[0010] It can be seen from the above technical scheme that the present application provides an exhaust gas treatment unit for nitroguanidine production, including: a collecting box, a spray tank, an activated carbon box and a combustion chamber. The side wall of the collecting box is connected to an air intake pipe, and an electromagnetic valve is arranged on the air intake pipe. During the nitroguanidine production process, the PLC controller controls the electromagnetic valve to open, and the generated exhaust gas enters the collecting box along the air intake pipe and is then processed uniformly. The top of the collecting box is connected to an air supply pipe, and the air supply pipe is connected to a dust collector. When the gas in the collecting box reaches a certain value, the PLC controller controls the dust collector to open, removes solid particles and dust in the exhaust gas, and pre-treats the exhaust gas to reduce the burden on subsequent processing equipment. The side wall of the dust collector is connected to the spray tank, and the exhaust gas treated by the dust collector enters the spray tank. The top of the spray tank is provided with A spray pipe, the bottom of which is connected to an atomizing nozzle, one side wall of the spray pipe is connected to an ammonia pipe, on which a solenoid valve 2 is arranged, which is connected to an ammonia tank, and the other side wall of the spray pipe is connected to a tap water pipe, on which a solenoid valve 3 is arranged, which is connected to a tap water tank. When the exhaust gas enters the spray tank, the PLC controller controls the solenoid valve 2 on the ammonia pipe to open, so that the ammonia in the ammonia tank flows to the spray pipe through the ammonia pipe, and then is sprayed out by the atomizing nozzle at the bottom of the spray pipe to spray the exhaust gas in the spray tank, and the nitrogen oxides are converted into harmless nitrogen and water by using ammonia water, thereby removing the nitrogen oxides in the exhaust gas. After the ammonia water is sprayed for a period of time and the nitrogen oxides in the exhaust gas are removed, the PLC controller controls the solenoid valve 2 to close and controls the solenoid valve Three is opened to allow the water in the tap water tank to flow to the spray pipe through the tap water pipe, and then the exhaust gas in the spray tank is sprayed, and the ammonia in the exhaust gas is absorbed by water to remove the ammonia in the exhaust gas. The top of the spray tank is connected to one end of the air supply pipe 2, and the air supply pipe 2 is provided with a solenoid valve 4. The other end of the air supply pipe 2 is connected to the activated carbon box, and the activated carbon box is provided with an activated carbon layer. When the exhaust gas is treated by the spray tank, the PLC controller controls the solenoid valve 4 to open, and the treated exhaust gas enters the activated carbon box along the air supply pipe 2, and the activated carbon in the activated carbon box adsorbs the remaining VOCs organic compounds in the exhaust gas. An exhaust pipe is provided on the top of the activated carbon box, and a solenoid valve 5 is provided on the exhaust pipe. An exhaust gas detector is provided on the exhaust pipe. The gas is detected by the exhaust gas detector. When the exhaust gas treatment meets the standard, the PLC controller controls the solenoid valve five on the exhaust pipe to open, and the exhaust gas that meets the standard is discharged. The bottom of the side wall of the activated carbon box is connected to a fresh air heat exchanger, and the side wall of the fresh air heat exchanger is connected to an air inlet pipe, and the air inlet pipe is connected to an induced draft fan. The top of the side wall of the activated carbon box is connected to the gas transmission pipe three, and the gas transmission pipe three is provided with a solenoid valve six. The gas transmission pipe three is connected to the combustion chamber. When the activated carbon box has treated the exhaust gas and it meets the emission standard, the PLC controller controls the fresh air heat exchanger and the induced draft fan to open, and the outside air is transported to the fresh air heat exchanger through the induced draft fan. The air is heated by the fresh air heat exchanger and enters the activated carbon box to purge the VOCs organic compounds adsorbed on the activated carbon. Then the PLC controller controls the solenoid valve six to open.The purged VOCs organic compounds are allowed to enter the combustion chamber, an ignition system is arranged on the top of the combustion chamber, a fuel bottle is installed on one side wall of the combustion chamber, the fuel bottle is provided with a fuel nozzle, the fuel nozzle passes through the side wall of the combustion chamber, the fuel bottle is connected to a fuel pipe, a solenoid valve seven is arranged on the fuel pipe, the fuel pipe is connected to a fuel tank, when the VOCs organic compounds enter the combustion chamber, the PLC controller controls the solenoid valve seven on the fuel pipe to open, the fuel in the fuel bottle is sprayed into the combustion chamber through the fuel nozzle, the PLC controller controls the ignition system to ignite, ignites the high-temperature VOCs organic compounds, and the fuel tank supplies fuel to the fuel bottle, an oxygen bottle is installed on the other side wall of the combustion chamber, the oxygen bottle is provided with an oxygen nozzle, the oxygen nozzle passes through the side wall of the combustion chamber, the oxygen bottle is connected to an oxygen pipe, a solenoid valve eight is arranged on the oxygen pipe, and the PLC controller simultaneously opens the ignition system when opening the ignition system Open the solenoid valve 8 on the oxygen pipe, the oxygen cylinder provides the oxygen required for combustion in the combustion chamber, the oxygen pipe is connected to the oxygen tank, the oxygen tank supplies oxygen to the oxygen cylinder, the fresh air heat exchanger and the combustion chamber desorb the VOCs organic compounds adsorbed on the activated carbon, so that the activated carbon recovers the adsorption function and is recycled, thereby improving the utilization rate of the activated carbon, a return air duct is arranged on the side wall of the combustion chamber, the solenoid valve 9 is arranged on the return air duct, the return air duct is connected to the fresh air heat exchanger, the VOCs organic compounds are decomposed into carbon dioxide and water vapor after high-temperature combustion, the PLC controller controls the solenoid valve 9 on the return air duct to open, so that the carbon dioxide and water vapor are discharged after the fresh air heat exchanger heat exchanger cools down and meets the standard, the equipment effectively completes the exhaust gas treatment through a series of exhaust gas treatment units, avoids the pollution to the environment caused by the exhaust gas treatment not meeting the standard, and the treatment is more environmentally friendly, and the exhaust gas is effectively treated to meet the emission requirements;,
[0011] The dust collector, spray tank, exhaust gas detector, fresh air heat exchanger, induced draft fan, ignition system and each solenoid valve are electrically connected to the PLC controller. The PLC controller controls the dust collector, spray tank, exhaust gas detector, fresh air heat exchanger, induced draft fan, ignition system and the switch of each solenoid valve to realize the automatic operation of the unit and improve work efficiency.
[0012] In summary, the beneficial effects produced by this application are as follows:
[0013] 1. The unit mainly includes a collection box, a spray tank, an activated carbon box and a combustion chamber. The ammonia pipe and the tap water pipe on the top of the spray tank are used to spray the exhaust gas entering the spray tank in turn, and then the treated gas is passed into the activated carbon box. The activated carbon is used to adsorb other organic compounds contained in the exhaust gas. The exhaust gas treatment is effectively completed through a series of exhaust gas treatment units to avoid pollution to the environment caused by substandard exhaust gas treatment. The treatment is more environmentally friendly and effectively treats the exhaust gas to meet the emission requirements.
[0014] 2. The unit is equipped with a fresh air heat exchanger, which is used to desorb the desorption saturated activated carbon. The fresh air heat exchanger heats the air and then enters the activated carbon box to purge the VOCs organic compounds adsorbed on the activated carbon, so that the adsorption function of the activated carbon can be restored and recycled, thereby improving the utilization rate of the activated carbon.
[0015] 3. The unit is connected to a PLC controller, which is used to control the working status of each device, realize the automatic operation of the unit and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0017] Figure 1 This is a schematic diagram of the structure of this application.
[0018] Figure 2 This is the structure diagram of the PLC control cabinet.
[0019] Illustration Description:
[0020] Among them, 1-collection box, 2-dust collector, 3-spray tank, 4-activated carbon box, 5-fresh air heat exchanger, 6-combustion chamber, 7-intake pipe, 8-gas pipe one, 9-spray pipe, 10-ammonia pipe, 11-tap water pipe, 12-atomizing nozzle, 13-gas pipe two, 14-activated carbon layer, 15-exhaust pipe, 16-waste gas detector, 17-induced draft fan, 18-gas pipe three, 19-fuel bottle, 20-oxygen bottle, 21-PLC controller. DETAILED DESCRIPTION
[0021] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.
[0022] See the above technical solution Figure 1-Figure 2 .
[0023] Embodiment 1:
[0024] A tail gas treatment unit for nitroguanidine production includes: a collecting box 1, a spray tank 3, an activated carbon box 4 and a combustion chamber 6. The side wall of the collecting box 1 is connected to an air intake pipe 7, and the air intake pipe 7 is provided with a solenoid valve 1. During the nitroguanidine production process, a PLC controller 21 controls the solenoid valve 1 to open, and the generated tail gas enters the collecting box 1 along the air intake pipe 7 and is then processed uniformly. The top of the collecting box 1 is connected to an air supply pipe 8, and the air supply pipe 8 is connected to a dust collector 2. When the gas in the collecting box 1 reaches a certain value, the PLC controller 21 controls the dust collector 2 to open, removes solid particles and dust in the tail gas, and pre-treats the tail gas to reduce the burden of subsequent processing equipment. The side wall of the dust collector 2 is connected to the spray tank 3, and the tail gas treated by the dust collector 2 enters the spray tank 3. A spray pipe 9 is arranged on the top of the spray tank 3, and an atomizing nozzle 12 is connected to the bottom of the spray pipe 9. One side wall of the spray pipe 9 is connected to an ammonia pipe 10, and a solenoid valve 2 is arranged on the ammonia pipe 10. The ammonia pipe 10 is connected to an ammonia tank. The other side wall of the spray pipe 9 is connected to a tap water pipe 11, and a solenoid valve 3 is arranged on the tap water pipe 11. The tap water pipe 11 is connected to the tap water tank. When the exhaust gas enters the spray tank 3, the PLC controller 21 controls the solenoid valve 2 on the ammonia pipe 10 to open, so that the ammonia in the ammonia tank flows to the spray pipe 9 through the ammonia pipe 10, and then is sprayed out by the atomizing nozzle 12 at the bottom of the spray pipe 9 to spray the exhaust gas in the spray tank 3, and the nitrogen oxides are converted into harmless nitrogen and water by using the ammonia water, thereby removing the nitrogen oxides in the exhaust gas. When the ammonia water After spraying for a period of time, when the nitrogen oxides in the tail gas are removed, the PLC controller 21 controls the solenoid valve 2 to close and the solenoid valve 3 to open, so that the water in the tap water tank flows to the spray pipe 9 through the tap water pipe 11, and then the tail gas in the spray tank 3 is sprayed, and the water is used to absorb the ammonia in the tail gas, thereby removing the ammonia in the tail gas. The top of the spray tank 3 is connected to one end of the gas pipe 2 13, and the gas pipe 2 13 is provided with a solenoid valve 4. The other end of the gas pipe 2 13 is connected to the activated carbon box 4, and the activated carbon box 4 is provided with an activated carbon layer 14. When the tail gas is treated by the spray tank 3, the PLC controller 21 controls the solenoid valve 4 to open, and the treated tail gas enters the activated carbon box 4 along the gas pipe 2 13, and the activated carbon in the activated carbon box 4 is used to treat the remaining VOCs organic compounds are adsorbed and treated. An exhaust pipe 15 is arranged on the top of the activated carbon box 4. A solenoid valve five is arranged on the exhaust pipe 15. A waste gas detector 16 is arranged on the exhaust pipe 15. The exhaust gas after the activated carbon adsorption is detected by the waste gas detector 16. When the exhaust gas treatment meets the standard, the PLC controller 21 controls the solenoid valve five on the exhaust pipe 15 to open, and the exhaust gas that meets the standard is discharged. A fresh air heat exchanger 5 is connected to the bottom of the side wall of the activated carbon box 4. An air inlet pipe is connected to the side wall of the fresh air heat exchanger 5. An induced draft fan 17 is connected to the top of the side wall of the activated carbon box 4. A solenoid valve six is arranged on the air supply pipe three 18. The air supply pipe three 18 is connected to the combustion chamber 6. When the activated carbon box 4 treats the exhaust gas and discharges it,The PLC controller 21 controls the fresh air heat exchanger 5 and the induced draft fan 17 to open, and the outside air is transported to the fresh air heat exchanger 5 through the induced draft fan 17. After the air is heated by the fresh air heat exchanger 5, it enters the activated carbon box 4 to purge the VOCs organic compounds adsorbed on the activated carbon. Then the PLC controller 21 controls the solenoid valve 6 to open, so that the purged VOCs organic compounds enter the combustion chamber 6. An ignition system is set on the top of the combustion chamber 6. A fuel bottle 19 is installed on one side wall of the combustion chamber 6. The fuel bottle 19 is provided with a fuel nozzle. The fuel nozzle A fuel pipe is connected to the fuel bottle 19 through the side wall of the combustion chamber 6. The fuel pipe is provided with a solenoid valve 7. The fuel pipe is connected to a fuel tank. When the VOCs organic compound enters the combustion chamber 6, the PLC controller 21 controls the solenoid valve 7 on the fuel pipe to open, and the fuel in the fuel bottle 19 is sprayed into the combustion chamber 6 by the fuel nozzle. The PLC controller 21 controls the ignition system to ignite and ignite the high-temperature VOCs organic compound. The fuel tank supplies fuel to the fuel bottle 19. An oxygen cylinder 20 is installed on the other side wall of the combustion chamber 6. The oxygen cylinder 20 is provided with a An oxygen nozzle is arranged, and the oxygen nozzle penetrates the side wall of the combustion chamber 6. The oxygen cylinder 20 is connected to an oxygen pipe, and a solenoid valve 8 is arranged on the oxygen pipe. When the PLC controller 21 turns on the ignition system, the solenoid valve 8 on the oxygen pipe is opened at the same time. The oxygen cylinder 20 provides the combustion chamber 6 with the oxygen required for combustion. The oxygen pipe is connected to an oxygen tank, and the oxygen tank supplies oxygen to the oxygen cylinder 20. The fresh air heat exchanger 5 and the combustion chamber 6 desorb the VOCs organic compounds adsorbed on the activated carbon, so that the activated carbon recovers its adsorption function and is recycled, thereby improving the utilization rate of the activated carbon. A return air duct is arranged on the side wall of the combustion chamber 6, and a solenoid valve 9 is arranged on the return air duct. The return air duct is connected to the fresh air heat exchanger 5. VOCs organic compounds are decomposed into carbon dioxide and water vapor after high-temperature combustion. The PLC controller 21 controls the solenoid valve 9 on the return air duct to open, so that carbon dioxide and water vapor are discharged after heat exchange and temperature reduction by the fresh air heat exchanger 5 to meet the standards. The equipment effectively completes the exhaust gas treatment through a series of exhaust gas treatment units, avoids the pollution of the environment caused by the exhaust gas treatment that does not meet the standards, and the treatment is more environmentally friendly, and the exhaust gas is effectively treated to meet the emission requirements;
[0025] The dust collector 2, the spray tank 3, the exhaust gas detector 16, the fresh air heat exchanger 5, the induced draft fan 17, the ignition system and each solenoid valve are electrically connected to the PLC controller 21. The PLC controller 21 controls the dust collector 2, the spray tank 3, the exhaust gas detector 16, the fresh air heat exchanger 5, the induced draft fan 17, the ignition system and the switches of each solenoid valve to realize the automatic operation of the unit and improve the work efficiency.
[0026] As a preferred embodiment, a drain pipe is provided at the bottom of the side wall of the spray tank 3, and a solenoid valve 10 is provided on the drain pipe. When the spraying work in the spray tank 3 is completed and the treated exhaust gas enters the activated carbon, the PLC controller 21 controls the solenoid valve 10 on the drain pipe to open and discharge the water in the spray tank 3.
[0027] As a preferred embodiment, a plate frame is welded inside the activated carbon box 4, and the activated carbon is placed on the plate frame.
[0028] As a preferred embodiment, a catalyst bed is provided inside the combustion chamber 6, and a catalyst is placed on the catalyst bed. The catalyst can enhance the combustion efficiency of the fuel at high temperature and promote the conversion of harmful substances.
[0029] As a preferred embodiment, the PLC controller 21 is provided with a plurality of operation buttons, and the plurality of operation buttons respectively control the switch of each device.
[0030] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope of the present application is indicated by the claims.
[0031] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.
Claims
1. A tail gas treatment unit for nitroguanidine production, characterized in that: include: A collecting box (1), a spray tank (3), an activated carbon box (4) and a combustion chamber (6); the side wall of the collecting box (1) is connected to an air intake pipe (7), and the air intake pipe (7) is provided with a solenoid valve 1; the top of the collecting box (1) is connected to an air supply pipe 1 (8), and the air supply pipe 1 (8) is connected to a dust collector (2); the side wall of the dust collector (2) is connected to the spray tank (3); a spray pipe (9) is provided on the top of the spray tank (3), and the bottom of the spray pipe (9) is connected to an atomizing nozzle (12); the side wall of the spray pipe (9) is connected to an ammonia water pipe (10), and the ammonia water pipe (10) is provided with a solenoid valve 2; The ammonia water pipe (10) is connected to an ammonia water tank, the other side wall of the spray pipe (9) is connected to a tap water pipe (11), the tap water pipe (11) is provided with a solenoid valve three, the tap water pipe (11) is connected to the tap water tank, the top of the spray tank (3) is connected to one end of a gas pipe (13), the gas pipe (13) is provided with a solenoid valve four, the other end of the gas pipe (13) is connected to the activated carbon box (4), the activated carbon box (4) is provided with an activated carbon layer (14), the top of the activated carbon box (4) is provided with an exhaust pipe (15), the exhaust pipe (15) is provided with a solenoid valve five, the An exhaust gas detector (16) is arranged on the exhaust pipe (15), a fresh air heat exchanger (5) is connected to the bottom of the side wall of the activated carbon box (4), an air inlet pipe is connected to the side wall of the fresh air heat exchanger (5), and an induced draft fan (17) is connected to the top of the side wall of the activated carbon box (4) and an air supply pipe three (18) is arranged on the air supply pipe three (18), and an electromagnetic valve six is arranged on the air supply pipe three (18), and the air supply pipe three (18) is connected to the combustion chamber (6), and an ignition system is arranged on the top of the combustion chamber (6), and a fuel bottle (19) is installed on one side wall of the combustion chamber (6), and the fuel bottle (19) is provided with a fuel nozzle, and the The fuel nozzle penetrates the side wall of the combustion chamber (6), the fuel bottle (19) is connected to a fuel pipe, the fuel pipe is provided with a solenoid valve (7), the fuel pipe is connected to a fuel tank, an oxygen bottle (20) is installed on the other side wall of the combustion chamber (6), the oxygen bottle (20) is provided with an oxygen nozzle, the oxygen nozzle penetrates the side wall of the combustion chamber (6), the oxygen bottle (20) is connected to an oxygen pipe, the oxygen pipe is provided with a solenoid valve (8), the oxygen pipe is connected to an oxygen tank, a return air pipe is provided on the side wall of the combustion chamber (6), the return air pipe is provided with a solenoid valve (9), and the return air pipe is connected to the fresh air heat exchanger (5); The dust collector (2), the spray tank (3), the exhaust gas detector (16), the fresh air heat exchanger (5), the induced draft fan (17), the ignition system and each of the solenoid valves are electrically connected to a PLC controller (21).
2. The tail gas treatment unit for nitroguanidine production according to claim 1, characterized in that: A drain pipe is arranged at the bottom of the side wall of the spray tank (3), and a solenoid valve 10 is arranged on the drain pipe.
3. The tail gas treatment unit for nitroguanidine production according to claim 1, characterized in that: A plate frame is welded inside the activated carbon box (4), and the activated carbon is placed on the plate frame.
4. The tail gas treatment unit for nitroguanidine production according to claim 1, characterized in that: A catalyst bed is arranged inside the combustion chamber (6), and a catalyst is placed in the catalyst bed.
5. The tail gas treatment unit for nitroguanidine production according to claim 1, characterized in that: The PLC controller (21) is provided with a plurality of operation buttons.