A fully automatic control system for VOCs catalytic oxidation

Abstract

The invention discloses a VOCs catalytic oxidation fully automatic control system, comprising a washing tower and a combustion chamber; the washing tower: the lower end of its outer arc surface is provided with supporting feet distributed at equal angles, the bottom ends of the supporting feet of the washing tower are fixedly connected to the upper surface of a bottom plate, the lower end of the washing tower is provided with an air inlet pipe, the part of the air inlet pipe located inside the washing tower is a spiral structure, the top of the washing tower is provided with an activated carbon adsorption plate, the middle part of the inner wall surface of the washing tower is provided with a filler, the upper surface of the bottom plate is fixedly connected with a circulating pump, the lower end of the washing tower is fixedly connected with a circulating pipe at the water outlet, the water outlet end of the circulating pipe passes through the circular hole at the upper end of the washing tower and extends to the inside of the washing tower, the water outlet end of the circulating pipe is fixedly connected with a nozzle, the VOCs catalytic oxidation fully automatic control system has reasonable structural design, high VOCs removal efficiency, high heat energy recovery efficiency, reduced heat waste, saved energy, avoided pollution to the environment, and high reliability.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a fully automatic control system for VOCs catalytic oxidation. Background Art

[0002] VOC (Volatile Organic VOC refers to the general term for volatile organic compounds at room temperature. VOC waste gas contains formaldehyde, xylene, toluene, acetone, butanone, halogen compounds, etc. A large amount of VOC waste gas will be generated during the production and use of industries such as petrochemicals, pharmaceuticals, paints, coatings, electronic manufacturing, surface corrosion protection, shoemaking, printing, and transportation. Most of these compounds have pungent odors, which not only have a great impact on air quality, but also cause harm to human health if directly contacted. In addition, the flammable characteristics of VOC waste gas also cause safety hazards. At present, VOCs gas has become the focus of air treatment issues in various countries due to its large emission volume, many types, difficulty in degradation, strong toxicity, and great safety hazards. The current VOCs treatment methods mainly include: VOCs recovery membrane technology, VOCs treatment liquid absorption technology, VOCs treatment adsorption technology, VOCs treatment discharge plasma method, VOCs heat storage catalytic combustion technology, etc. However, the existing catalytic combustion treatment device has a low degree of automation, low purification efficiency, poor effect, and poor heat recovery effect after combustion, resulting in heat energy waste. To this end, we propose a VOCs catalytic oxidation fully automatic control system to solve the above defects. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a fully automatic control system for VOCs catalytic oxidation, which has a reasonable structural design, high VOCs removal efficiency, high heat energy recovery efficiency, reduces heat waste, saves energy, avoids pollution to the environment, has high reliability, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fully automatic control system for VOCs catalytic oxidation, comprising a scrubbing tower and a combustion chamber;

[0005] Washing tower: The lower end of its outer arc surface is provided with legs distributed at equal angles, and the bottom ends of the legs of the washing tower are fixedly connected to the upper surface of the bottom plate. The lower end of the washing tower is provided with an air inlet pipe, and the part of the air inlet pipe located inside the washing tower is a spiral structure. The top of the washing tower is provided with an activated carbon adsorption plate, and the middle part of the inner wall of the washing tower is provided with a filler. The upper surface of the bottom plate is fixedly connected with a circulation pump, and the water outlet at the lower end of the washing tower is fixedly connected with a circulation pipe. The water outlet end of the circulation pipe passes through the circular hole at the upper end of the washing tower and extends to the inside of the washing tower. The water outlet end of the circulation pipe is fixedly connected with a nozzle, and the nozzle is located below the activated carbon adsorption plate. The circulation pump is connected in series to the middle part of the circulation pipe. The air outlet at the top of the washing tower is fixedly connected with a connecting pipe, and the top of the connecting pipe is fixedly connected with a gas supply pipe;

[0006] Combustion chamber: fixedly connected to the upper surface of the bottom plate, the top of the combustion chamber is fixedly connected to a water storage tank, the arc bottom of the water storage tank is provided with a heat conducting rod, the heat conducting rod passes through the circular hole at the arc bottom of the water storage tank and extends to the interior of the combustion chamber, the lower end of the right side of the combustion chamber is fixedly connected to a preheating box, the interior of the preheating box is connected to the interior of the combustion chamber, the upper end of the right side plate of the combustion chamber is provided with a smoke exhaust pipe, the smoke exhaust pipe passes through the interior of the water storage tank and the preheating box respectively, the gas outlet end of the gas pipe passes through the side plate of the combustion chamber and extends to the interior of the combustion chamber;

[0007] Among them: it also includes a PLC controller, the PLC controller is fixedly connected to the upper surface of the bottom plate, the input end of the PLC controller is electrically connected to the external power supply, the output end of the PLC controller is electrically connected to the input end of the circulation pump, and the VOCs in the flue gas are removed by washing, adsorption and oxidation methods respectively. The structure is reasonably designed and the removal efficiency is high. The heat generated in the combustion process is recycled and utilized with high recycling efficiency, which reduces the waste of heat, saves energy, ensures the cleanliness of the treated gas, avoids pollution to the environment, and has high reliability.

[0008] Furthermore, a spiral rod is provided at the lower end of the heat conducting rod, and the spiral rod has a conical structure. The top end of the heat conducting rod is provided with heat conducting fins distributed in an array, which increases the heating area and improves the heat conduction efficiency.

[0009] Furthermore, a clamping ring is provided at the inner bottom end of the connecting pipe, and a symmetrical sliding groove is provided on the inner wall of the connecting pipe. A slider is slidably connected inside the sliding groove, and the inner side surfaces of the slider are fixedly connected to the upper ends of the outer arc surfaces of the conical blocks. The lower end of the conical block contacts the inclined surface provided on the upper ends of the inner wall surfaces of the clamping ring, so that the flue gas inside the washing tower maintains a certain pressure, prolongs its contact time with the detergent, makes the reaction of VOCs more complete, and improves the catalytic efficiency.

[0010] Furthermore, an induced draft fan is provided at the air inlet on the right side of the preheating box, the part of the smoke exhaust pipe located in the preheating box is a vortex structure, the induced draft fan and the part of the smoke exhaust pipe located in the preheating box correspond to each other, the input end of the induced draft fan is electrically connected to the output end of the PLC controller, and the air is preheated and then sent into the inner wall of the combustion chamber, thereby improving the heat energy recovery efficiency and reducing the waste of dye.

[0011] Furthermore, a detection box is provided on the upper surface of the preheating box, and a VOCs detector is provided on the side wall of the detection box. A return pipe is fixedly connected to the through hole provided at the front side plate of the detection box, and the smoke outlet of the return pipe is connected to the middle part of the air inlet pipe. A solenoid valve is connected in series to the air inlet end of the return pipe, and the air outlet end of the smoke exhaust pipe passes through the through holes provided on the top plate of the preheating box and the bottom plate of the detection box respectively and extends to the interior of the detection box. The input end of the solenoid valve is electrically connected to the output end of the PLC controller, and the output end of the VOCs detector is electrically connected to the input end of the PLC controller to detect the content of residual VOCs in the flue gas, so as to facilitate secondary treatment of the flue gas with a high VOCs content and improve the cleanliness of the purification.

[0012] Furthermore, an insulation plate is fixedly connected to the right side of the outer arc surface of the water tank, and the middle part of the smoke exhaust pipe is a rectangular spiral structure. The spiral structure of the smoke exhaust pipe passes through the through hole set in the side wall of the water tank and extends to the interior of the water tank. The right part of the spiral structure of the smoke exhaust pipe is located inside the insulation plate, which reduces heat loss and improves the efficiency of heat energy recovery.

[0013] Furthermore, the packing is a ball ring packing. Ball Ring Due to the openings in the ring wall, the utilization rate of the space and surface inside the ring is greatly improved, the air flow resistance is small, and the liquid is evenly distributed, which facilitates the full reaction of VOCs.

[0014] Furthermore, it also includes an electronic igniter, which is fixedly connected to the bottom end of the inner wall of the combustion chamber, and the input end of the combustion chamber is electrically connected to the input end of the PLC controller to facilitate automated operation.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the VOCs catalytic oxidation fully automatic control system has the following advantages:

[0016] 1. VOCs enter the scrubbing tower from the air inlet pipe, and enter the scrubbing liquid at the bottom of the scrubbing tower after aeration through the aeration holes at the end of the air inlet pipe. Some VOCs react with the scrubbing liquid, and the circulation pump starts to continuously pump the scrubbing liquid inside the scrubbing tower through the circulation pipe to the inside of the nozzle, and the nozzle sprays downward. The scrubbing liquid reacts with the rising VOCs to further catalytically reduce them. The filler greatly improves the utilization rate of the inner space and the inner surface of the ring, the air flow resistance is small, and the liquid is evenly distributed, which is convenient for the full reaction of VOCs. The remaining flue gas continues to flow upward and is adsorbed by the activated carbon on the activated carbon adsorption plate when passing through the activated carbon adsorption plate. The washed VOCs are adsorbed and treated by the activated carbon adsorption plate, which greatly improves the removal efficiency of VOCs.

[0017] 2. With the increase of VOCs gas, the gas pressure inside the scrubbing tower becomes larger and larger. When the gas pressure is greater than the gravity of the conical block, the conical block is pushed upward. The conical block keeps the flue gas inside the scrubbing tower at a certain pressure, prolonging its contact time with the detergent, making the VOCs react more fully and improving the catalytic efficiency.

[0018] 3. The gas enters the combustion chamber from the gas pipeline for internal combustion. The VOCs combustion heats the cold water inside the water tank, thereby recycling the generated heat. The spiral rod transfers the heat inside the combustion chamber to the cold water inside the water tank through the heat conducting rod. The heat conducting fins increase the contact area between the heat conducting rod and the water, further improving the efficiency of heat conduction, so that the generated heat is fully utilized. The flue gas generated by the combustion is discharged to the outside through the exhaust pipe. The middle part of the exhaust pipe is connected to the side wall of the water tank in a rectangular spiral shape. The waste heat inside the flue gas can be heat exchanged with the water inside the water tank through the exhaust pipe, and the generated heat can be further recycled. The insulation board has a heat-insulating effect on the exhaust pipe to prevent the heat inside the exhaust pipe from being lost to the outside through the exhaust pipe. Then the flue gas enters the interior of the preheating box through the exhaust pipe. The induced draft fan is started to send the external air into the combustion chamber through the preheating box. When the air passes through the combustion chamber, it exchanges heat with the exhaust pipe inside the combustion chamber, and the waste heat in the flue gas is recycled again, which improves the recovery efficiency of the waste heat.

[0019] 4. When the flue gas passes through the detection box, the VOCs detector detects the VOCs content remaining in the flue gas. When the VOCs content does not meet the emission standards, the solenoid valve is opened and the valve of the exhaust pipe at the upper end of the detection box is closed at the same time, so that the flue gas enters the intake pipe through the reflux pipe, and then undergoes secondary catalytic oxidation treatment to ensure the VOCs treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the combustion chamber structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the washing tower of the present invention;

[0023] Figure 4 This is an enlarged structural schematic diagram of location A of the present invention;

[0024] Figure 5 This is a schematic diagram of the enlarged structure of B of the present invention;

[0025] In the figure: 1 bottom plate, 2 washing tower, 3 combustion chamber, 4 water storage tank, 5 heat conducting rod, 51 spiral rod, 52 heat conducting fin, 6 connecting pipe, 61 clamping ring, 62 slide groove, 63 slider, 64 conical block, 7 preheating box, 71 induced draft fan, 72 detection box, 73 VOCs detector, 8 exhaust pipe, 9 insulation board, 10 PLC controller, 11 circulation pump, 12 circulation pipe, 13 gas pipe, 14 intake pipe, 15 return pipe, 16 solenoid valve, 17 nozzle, 18 filler, 19 activated carbon adsorption plate, 20 electronic igniter. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-5 , the present invention provides a technical solution: a VOCs catalytic oxidation fully automatic control system, including a washing tower 2 and a combustion chamber 3;

[0028] Washing tower 2: The lower end of its outer arc surface is provided with legs distributed at equal angles, and the bottom ends of the legs of washing tower 2 are fixedly connected to the upper surface of bottom plate 1. The lower end of washing tower 2 is provided with an air inlet pipe 14, and the part of air inlet pipe 14 located inside washing tower 2 is a spiral structure. The top of washing tower 2 is provided with an activated carbon adsorption plate 19, and the middle part of the inner wall surface of washing tower 2 is provided with a packing 18, and the packing 18 is a ball ring packing. Ball RingDue to the holes in the ring wall, the utilization rate of the inner space and the inner surface of the ring is greatly improved, the air flow resistance is small, the liquid is evenly distributed, and it is convenient for VOCs to fully react. A circulation pump 11 is fixedly connected to the upper surface of the bottom plate 1, and a circulation pipe 12 is fixedly connected to the water outlet at the lower end of the washing tower 2. The water outlet end of the circulation pipe 12 passes through the circular hole at the upper end of the washing tower 2 and extends to the inside of the washing tower 2. The water outlet end of the circulation pipe 12 is fixedly connected to a nozzle 17, and the nozzle 17 is located below the activated carbon adsorption plate 19. The circulation pump 11 is connected in series to the middle of the circulation pipe 12. VOCs enter the inside of the washing tower 2 from the air inlet pipe 14, and enter the washing liquid at the bottom of the washing tower 2 after aeration through the aeration holes at the end of the air inlet pipe 14. Part of the VOCs reacts with the washing liquid. The circulation pump 11 is started to continuously pump the washing liquid inside the washing tower 2 through the circulation pipe 12 to the inside of the nozzle 17, and the nozzle 17 sprays downward. The washing liquid reacts with the rising VOCs to further catalytically reduce them. The filler 18 greatly improves the inner space and the ring The utilization rate of the inner surface is high, the air flow resistance is small, and the liquid is evenly distributed, which is convenient for the full reaction of VOCs. The remaining flue gas continues to flow upward and is adsorbed by the activated carbon of the activated carbon adsorption plate 19 when passing through the activated carbon adsorption plate 19. A connecting pipe 6 is fixedly connected to the top gas outlet of the washing tower 2. A clamping ring 61 is provided at the bottom end of the connecting pipe 6. A symmetrical slide 62 is provided on the inner wall of the connecting pipe 6. A slider 63 is slidably connected inside the slide 62. The inner side surface of the slider 63 is fixedly connected to the upper end of the outer arc surface of the conical block 64. The lower end of the conical block 64 contacts the inclined surface set at the upper end of the inner wall surface of the clamping ring 61. As the VOCs gas increases, the gas pressure inside the washing tower 2 becomes larger and larger. When the gas pressure is greater than the gravity of the conical block 64, the conical block 64 is pushed upward. The conical block 64 keeps the flue gas inside the washing tower 2 at a certain pressure, prolongs its contact time with the detergent, makes the reaction of VOCs more complete, and improves the catalytic efficiency. The top of the connecting pipe 6 is fixedly connected to the gas supply pipe 13;

[0029] Combustion chamber 3: fixedly connected to the upper surface of the bottom plate 1, the top of the combustion chamber 3 is fixedly connected to a water storage tank 4, the arc bottom end of the water storage tank 4 is provided with a heat conducting rod 5, the heat conducting rod 5 passes through the circular hole at the arc bottom end of the water storage tank 4 and extends to the interior of the combustion chamber 3, the lower end of the heat conducting rod 5 is provided with a spiral rod 51, the spiral rod 51 is a conical structure, the top of the heat conducting rod 5 is provided with an array of heat conducting fins 52, which increase the heating area and improve the heat conduction efficiency, the lower end of the right side of the combustion chamber 3 is fixedly connected to a preheating box 7, the interior of the preheating box 7 is connected to the interior of the combustion chamber 3, the upper end of the right side plate of the combustion chamber 3 is provided with a smoke exhaust pipe 8, the smoke exhaust pipe 8 passes through the interior of the water storage tank 4 and the preheating box 7 respectively, the right side of the preheating box 7 is provided with an induced draft fan 71 at the air inlet, and the smoke exhaust pipe 8 is located at the preheating box 7. Part of it is a vortex structure, the induced draft fan 71 and the smoke exhaust pipe 8 are located in the corresponding part of the preheating box 7, the input end of the induced draft fan 71 is electrically connected to the output end of the PLC controller 10, and the air is preheated and then sent to the inner wall of the combustion chamber 3, so as to improve the recovery efficiency of heat energy and reduce the waste of dyes, the outlet end of the gas pipe 13 passes through the side plate of the combustion chamber 3 and extends to the inside of the combustion chamber 3, the outlet end of the smoke exhaust pipe 8 passes through the through holes provided on the top plate of the preheating box 7 and the bottom plate of the detection box 72 respectively and extends to the inside of the detection box 72, the input end of the solenoid valve 16 is electrically connected to the output end of the PLC controller 10, and the output end of the VOCs detector 73 is electrically connected to the input end of the PLC controller 10, so as to detect the content of residual VOCs in the flue gas, so as to facilitate the detection of flue gas with high VOCs content. Secondary treatment is carried out to improve the cleanliness of purification. The right side of the outer arc surface of the water storage tank 4 is fixedly connected with an insulation board 9. The middle part of the smoke exhaust pipe 8 is a rectangular spiral structure. The spiral structure of the smoke exhaust pipe 8 passes through the through hole set in the side wall of the water storage tank 4 and extends to the inside of the water storage tank 4. The right part of the spiral structure of the smoke exhaust pipe 8 is located inside the insulation board 9, which reduces heat loss and improves the recovery efficiency of heat energy. The gas enters the combustion chamber 3 from the gas pipe 13 and burns inside. The combustion of VOCs heats the cold water inside the water storage tank 4, thereby recycling the generated heat. The spiral rod 51 transfers the heat inside the combustion chamber 3 to the cold water inside the water storage tank 4 through the heat conducting rod 5. The heat conducting fins 52 increase the contact area between the heat conducting rod 5 and the water, further improving the heat transfer. The efficiency of conduction is improved, so that the generated heat can be fully utilized, and the smoke generated by combustion is discharged to the outside through the smoke exhaust pipe 8. The middle part of the smoke exhaust pipe 8 is connected to the side wall of the water storage tank 4 in a rectangular spiral shape. The waste heat inside the smoke can be heat-exchanged with the water inside the water storage tank 4 through the smoke exhaust pipe 8, and the generated heat is further recycled. The insulation board 9 has an insulation effect on the smoke exhaust pipe 8 to prevent the heat inside the smoke exhaust pipe 8 from being lost to the outside through the smoke exhaust pipe 8. Then the smoke enters the interior of the preheating box 7 through the smoke exhaust pipe 8. The induced draft fan 71 is started to send the external air into the interior of the combustion chamber 3 through the preheating box 7. When the air passes through the combustion chamber 3, it exchanges heat with the smoke exhaust pipe 8 inside the combustion chamber 3, and the waste heat in the smoke is recycled again, thereby improving the recovery efficiency of the waste heat.A detection box 72 is provided on the upper surface of the preheating box 7, and a VOCs detector 73 is provided on the side wall of the detection box 72. A return pipe 15 is fixedly connected to the through hole provided on the front side plate of the detection box 72, and the smoke outlet of the return pipe 15 is connected to the middle part of the intake pipe 14. A solenoid valve 16 is connected in series to the intake end of the return pipe 15. When the smoke passes through the detection box 72, the VOCs detector 73 detects the VOCs content remaining in the smoke. When the VOCs content does not meet the emission standard, the solenoid valve 16 is opened and the valve of the smoke exhaust pipe at the upper end of the detection box 72 is closed, so that the smoke passes through the return pipe 15 and enters the intake pipe 14, thereby performing secondary catalytic oxidation treatment to ensure the VOCs treatment effect;

[0030] Among them: it also includes an electronic igniter 20, which is fixedly connected to the bottom end of the inner wall of the combustion chamber 3, and the input end of the combustion chamber 3 is electrically connected to the input end of the PLC controller 10, which is convenient for automated operation.

[0031] Wherein: it also includes a PLC controller 10, which is fixedly connected to the upper surface of the base plate 1, the input end of the PLC controller 10 is electrically connected to the external power supply, and the output end of the PLC controller 10 is electrically connected to the input end of the circulation pump 11.

[0032] When in use: VOCs enter the interior of the washing tower 2 from the air inlet pipe 14, and enter the washing liquid at the bottom of the washing tower 2 after aeration through the aeration holes at the end of the air inlet pipe 14. Part of the VOCs react with the washing liquid. The circulation pump 11 starts to continuously pump the washing liquid inside the washing tower 2 through the circulation pipe 12 to the interior of the nozzle 17. The nozzle 17 sprays downward, and the washing liquid reacts with the rising VOCs to further catalytically reduce them. The filler 18 greatly improves the utilization rate of the inner space and the inner surface of the ring, the air flow resistance is small, and the liquid is evenly distributed, which is convenient for the full reaction of VOCs. The remaining flue gas continues to flow upward and is adsorbed by activated carbon. When the VOCs gas increases, the gas pressure inside the scrubbing tower 2 becomes larger and larger. When the gas pressure is greater than the gravity of the conical block 64, the conical block 64 is pushed upward. The conical block 64 keeps the flue gas inside the scrubbing tower 2 at a certain pressure, prolongs the contact time between the flue gas and the detergent, makes the reaction of VOCs more complete, and improves the catalytic efficiency. The gas enters the combustion chamber 3 from the gas pipe 13 and burns. The VOCs combustion heats the cold water inside the water storage tank 4, thereby recycling the generated heat. The spiral rod 51 transfers the heat inside the combustion chamber 3 through the guide tube 13. The heat rod 5 transfers the heat to the cold water inside the water storage tank 4. The heat conducting fins 52 increase the contact area between the heat conducting rod 5 and the water, further improving the efficiency of heat conduction, so that the generated heat can be fully utilized. The smoke generated by the combustion is discharged to the outside through the exhaust pipe 8. The middle part of the exhaust pipe 8 is connected to the side wall of the water storage tank 4 in a rectangular spiral shape. The residual heat inside the smoke can be heat-exchanged with the water inside the water storage tank 4 through the exhaust pipe 8, and the generated heat can be further recycled. The insulation board 9 has a heat-insulating effect on the exhaust pipe 8 to prevent the heat inside the exhaust pipe 8 from being lost to the outside through the exhaust pipe 8, and then the smoke enters the preheating box 7 through the exhaust pipe 8. The induced draft fan 71 is started to send external air into the combustion chamber 3 through the preheating box 7. When the air passes through the combustion chamber 3, heat exchange occurs with the exhaust pipe 8 inside the combustion chamber 3, and the waste heat in the flue gas is recovered and utilized again, thereby improving the waste heat recovery efficiency. When the flue gas passes through the detection box 72, the VOCs detector 73 detects the VOCs content remaining in the flue gas. When the VOCs content does not meet the emission standards, the solenoid valve 16 is opened and the valve of the exhaust pipe at the upper end of the detection box 72 is closed, so that the flue gas enters the intake pipe 14 through the reflux pipe 15, thereby undergoing secondary catalytic oxidation treatment to ensure the VOCs treatment effect.

[0033] It is worth noting that the specific model of the PLC controller 10 disclosed in this embodiment is Siemens S7-200. The induced draft fan 71, VOCs detector 73, circulating pump 11, solenoid valve 16 and electronic igniter 20 can be freely configured according to the actual application scenario. It is recommended to use the SWF series mixed flow fan produced by Shandong Zhongnan Kele Air Conditioning Equipment Co., Ltd. for the induced draft fan 71, and the MOT500 gas detector produced by Shenzhen Corno Electronic Technology Co., Ltd. for the VOCs detector 73. The PLC controller 10 controls the induced draft fan 71, VOCs detector 73, circulating pump 11, solenoid valve 16 and electronic igniter 20 using methods commonly used in the prior art.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic control system for VOCs catalytic oxidation, characterized by: It includes a scrubber (2) and a combustion chamber (3); A washing tower (2): The lower end of the outer arc surface is provided with legs distributed at equal angles, the bottom ends of the legs of the washing tower (2) are fixedly connected to the upper surface of the bottom plate (1), the lower end of the washing tower (2) is provided with an air inlet pipe (14), the part of the air inlet pipe (14) located inside the washing tower (2) is a spiral structure, the top of the washing tower (2) is provided with an activated carbon adsorption plate (19), the middle part of the inner wall surface of the washing tower (2) is provided with a filler (18), the upper surface of the bottom plate (1) is fixedly connected to a circulation pump (11), and the washing tower (2) is provided with a plurality of air inlets (14). A circulation pipe (12) is fixedly connected to the water outlet at the lower end, the water outlet end of the circulation pipe (12) passes through the circular hole at the upper end of the washing tower (2) and extends to the interior of the washing tower (2), the water outlet end of the circulation pipe (12) is fixedly connected to a nozzle (17), the nozzle (17) is located below the activated carbon adsorption plate (19), the circulation pump (11) is connected in series to the middle of the circulation pipe (12), the top air outlet of the washing tower (2) is fixedly connected to a connecting pipe (6), and the top end of the connecting pipe (6) is fixedly connected to a gas delivery pipe (13); Combustion chamber (3): fixedly connected to the upper surface of the bottom plate (1), the top of the combustion chamber (3) is fixedly connected to a water storage tank (4), the arc bottom end of the water storage tank (4) is provided with a heat conducting rod (5), the heat conducting rod (5) passes through the circular hole at the arc bottom end of the water storage tank (4) and extends to the interior of the combustion chamber (3), the lower end of the right side of the combustion chamber (3) is fixedly connected to a preheating box (7), the interior of the preheating box (7) is connected to the interior of the combustion chamber (3), the upper end of the right side plate of the combustion chamber (3) is provided with a smoke exhaust pipe (8), the smoke exhaust pipe (8) passes through the interior of the water storage tank (4) and the preheating box (7) respectively, and the gas outlet end of the gas transmission pipe (13) passes through the side plate of the combustion chamber (3) and extends to the interior of the combustion chamber (3); Wherein: it also includes a PLC controller (10), the PLC controller (10) being fixedly connected to the upper surface of the base plate (1), the input end of the PLC controller (10) being electrically connected to an external power supply, and the output end of the PLC controller (10) being electrically connected to the input end of a circulation pump (11); The lower end of the heat conducting rod (5) is provided with a spiral rod (51), the spiral rod (51) is in a conical structure, and the top end of the heat conducting rod (5) is provided with heat conducting fins (52) distributed in an array; The inner bottom end of the connecting tube (6) is provided with a clamping ring (61), the inner wall of the connecting tube (6) is provided with a symmetrical sliding groove (62), the inner part of the sliding groove (62) is slidably connected with a slider (63), the inner side surface of the slider (63) is fixedly connected to the upper end of the outer arc surface of the conical block (64), and the lower end of the conical block (64) is in contact with the inclined surface provided on the upper end of the inner wall surface of the clamping ring (61).

2. A VOCs catalytic oxidation fully automatic control system according to claim 1, characterized in that: An induced draft fan (71) is provided at the air inlet on the right side of the preheating box (7); the portion of the smoke exhaust pipe (8) located in the preheating box (7) is a vortex structure; the induced draft fan (71) corresponds to the portion of the smoke exhaust pipe (8) located in the preheating box (7); and the input end of the induced draft fan (71) is electrically connected to the output end of the PLC controller (10).

3. A VOCs catalytic oxidation fully automatic control system according to claim 1, characterized in that: A detection box (72) is provided on the upper surface of the preheating box (7), a VOCs detector (73) is provided on the side wall of the detection box (72), a return pipe (15) is fixedly connected to a through hole provided on the front side plate of the detection box (72), a smoke outlet of the return pipe (15) is connected to the middle of the air inlet pipe (14), an electromagnetic valve (16) is connected in series to the air inlet end of the return pipe (15), an air outlet end of the smoke exhaust pipe (8) passes through through holes provided on the top plate of the preheating box (7) and the bottom plate of the detection box (72) respectively and extends to the interior of the detection box (72), an input end of the electromagnetic valve (16) is electrically connected to an output end of a PLC controller (10), and an output end of the VOCs detector (73) is electrically connected to an input end of the PLC controller (10).

4. A VOCs catalytic oxidation fully automatic control system according to claim 1, characterized in that: The right side of the outer arc surface of the water storage tank (4) is fixedly connected to a heat preservation plate (9); the middle part of the smoke exhaust pipe (8) is in a rectangular spiral structure; the spiral structure of the smoke exhaust pipe (8) passes through a through hole provided in the side wall of the water storage tank (4) and extends to the interior of the water storage tank (4); the right side part of the spiral structure of the smoke exhaust pipe (8) is located inside the heat preservation plate (9).

5. A VOCs catalytic oxidation fully automatic control system according to claim 1, characterized in that: The packing (18) is a ball ring packing.

6. A VOCs catalytic oxidation fully automatic control system according to claim 1, characterized in that: It also includes an electronic igniter (20), which is fixedly connected to the bottom end of the inner wall of the combustion chamber (3), and the input end of the combustion chamber (3) is electrically connected to the input end of the PLC controller (10).

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