A kiln waste gas treatment system and process for heating and spraying a sewing machine frame

Abstract

The present invention mainly relates to the technical field of waste gas treatment, specifically a kiln waste gas treatment system and process for heating and spraying sewing machine frames, including a collection and pretreatment device, a bag filter, an activated carbon environmental protection adsorption box, an electrostatic precipitator, a desulfurization and denitration device, a dry filter, a catalytic combustion device, and a detection instrument. A first inlet and a first outlet are respectively arranged on the bag filter. A second inlet and a second outlet are respectively arranged on the electrostatic precipitator. A third inlet and a third outlet are respectively arranged on the desulfurization and denitration device. A fourth inlet and a fourth outlet are respectively arranged on the dry filter. Through the design of the bag filter, the activated carbon environmental protection adsorption box, the electrostatic precipitator, the desulfurization and denitration device, the dry filter, and the catalytic combustion device, the waste gas generated by heating and spraying the sewing machine frame can be treated, improving the efficiency of waste gas treatment.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of waste gas treatment, and specifically to a kiln waste gas treatment system and process for heating and spraying sewing machine frames. Background Art

[0002] A sewing machine frame is a framework that supports and fixes a sewing machine, providing a stable working platform for the sewing machine. When processing a sewing machine frame, it usually needs to be treated through a heating and spraying process, mainly for the surface coating of the frame of a sewing machine or other metal components. It is a technology that uses a heat source (such as a flame, arc, plasma arc, etc.) to heat a coating material or coating to a plastic or molten state, and then spray it onto the surface of a pre-treated substrate at a high speed to form a surface coating with various functions. Its main process flow includes the following:

[0003] 1. Cleaning: Clean and degrease the surface of the product to ensure that the coating can adhere fully.

[0004] 2. Spraying: Uniformly spray the coating on the surface of the sewing machine frame and control its thickness and coating area.

[0005] 3. Heating: Use a heating device to heat the surface of the sewing machine frame to a certain temperature (usually around 100°C) to promote coating curing and ripening.

[0006] 4. Inspection: Inspect the quality of the coating to ensure that it meets relevant standards and requirements.

[0007] Currently, the main methods for treating waste gas in kilns for heating and spraying sewing machine frames on the market are as follows:

[0008] Adsorption method: Pollutants in the waste gas are adsorbed on the surface of an adsorbent (such as activated carbon, diatomite, molecular sieve, etc.) to achieve waste gas purification. This method is suitable for treating waste gas containing volatile organic compounds (VOCs).

[0009] Absorption method: A liquid absorbent (such as water, acid, alkali, etc.) is used to chemically or physically interact with pollutants in the waste gas, transferring the pollutants from the waste gas to the absorbent liquid. This method is commonly used for treating waste gas containing acidic, alkaline, and soluble gases.

[0010] Catalytic combustion method: Organic pollutants in the waste gas are burned at a lower temperature through a catalyst, converting them into harmless water and carbon dioxide. This method is suitable for treating waste gas containing organic compounds.

[0011] Biological filter method: Microorganisms are used to degrade organic pollutants in the waste gas. The waste gas passes through a filter layer filled with microorganisms, and the microorganisms decompose the organic matter during their growth and metabolism process.

[0012] Existing devices using the above methods are relatively single, that is, only one of the above methods is used to treat waste gas, which easily causes some harmful gases in the waste gas to be unable to be removed and discharged into the external environment, resulting in pollution and making the overall treatment effect unsatisfactory. Summary of the Invention

[0013] The present invention mainly provides a kiln waste gas treatment system and process for heating and spraying sewing machine frames to solve the technical problems raised in the above background technology.

[0014] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0015] A kiln waste gas treatment system for heating and spraying sewing machine frames includes a collection and pretreatment device, a bag filter, an activated carbon environmental protection adsorption box, an electrostatic precipitator, a desulfurization and denitrification device, a dry filter, a catalytic combustion device, and a detection instrument. The output end of the collection and pretreatment device is connected to a first output end. The bag filter is respectively provided with a first inlet and a first outlet. The electrostatic precipitator is respectively provided with a second inlet and a second outlet. The desulfurization and denitrification device is respectively provided with a third inlet and a third outlet. The dry filter is respectively provided with a fourth inlet and a fourth outlet;

[0016] The catalytic combustion device respectively includes an oxygen delivery device, an adsorption box, and a catalytic combustion furnace. The adsorption box is respectively provided with a fifth inlet and a fifth outlet. On the side of the catalytic combustion furnace away from the fifth outlet, a sixth outlet is also provided;

[0017] Between the first inlet and the first output end, between the first outlet and the input end of the activated carbon environmental protection adsorption box, between the output end of the activated carbon environmental protection adsorption box and the second inlet, between the second outlet and the third inlet, between the third outlet and the fourth inlet, and between the fourth outlet and the fifth inlet, they are all fixedly connected by flanges through pipelines. The fifth outlet communicates with the inside of the catalytic combustion furnace, and the sixth outlet is fixedly connected to the pipeline on the detection instrument.

[0018] Furthermore, the collection and pretreatment device includes a first collection pipeline and a second collection pipeline for collecting waste gas. The first collection pipeline is fixedly connected to a dust filter and a second delivery fan by flanges through pipelines. The output end of the second delivery fan is fixedly connected to the input end of the first output end by a flange. A filter screen is also provided inside the dust filter.

[0019] Further, a filter bag is provided inside the bag filter, and a cleaning motor is fixedly installed at the top of the bag filter. The bottom output end of the cleaning motor is key-connected to a rotating shaft that penetrates into the interior of the bag filter. A plurality of connecting frames are fixedly connected to the outer side of the rotating shaft, and a scraping plate is fixedly connected to one side of the plurality of connecting frames away from the rotating shaft. The outer wall of the scraping plate is in contact with the surface of the filter bag, and an impurity outlet is further provided at the bottom of the bag filter.

[0020] Further, the electrostatic precipitator includes a first uniform distribution plate and a second uniform distribution plate located below its interior. A cooling pipe is provided above the second uniform distribution plate. The cooling pipe is a serpentine pipe, and a dust collecting electrode tube and a cathode wire are further provided above the cooling pipe.

[0021] Further, the desulfurization and denitrification equipment includes an ozone spray pipe located above its interior. The head of the ozone spray pipe is connected to an ozone generator located outside. A reaction cavity is further provided inside the desulfurization and denitrification equipment, and the tail of the ozone spray pipe communicates with the interior of the reaction cavity.

[0022] Further, the dry filter includes an F7 medium-efficiency filter bag located on the left side of the interior and an F9 high-efficiency filter bag located on the right side of the F7 medium-efficiency filter bag. Both the F7 medium-efficiency filter bag and the F9 high-efficiency filter bag are made of fiberglass.

[0023] Further, the oxygen delivery equipment is fixedly installed on the top of the adsorption box by bolts. A plurality of oxygen delivery pipes are connected to the oxygen delivery equipment. A supplementary oxygen blower is fixedly connected to one side of the oxygen delivery pipe by a flange. The input end of the supplementary oxygen blower is connected to an oxygen generation equipment located outside through a pipeline, and an activated carbon adsorption plate is provided inside the adsorption box.

[0024] Further, an ignition interface is installed above the interior of the catalytic combustion furnace. The top of the ignition interface is connected to an oxygen access pipe, and the side of the oxygen access pipe away from the ignition interface communicates with the interior of the oxygen delivery pipe.

[0025] Further, the detection instrument uses a gas detector, which includes a sensor, a control circuit board, a power supply module, a display screen, and an alarm inside, and both ends of the detection instrument and the gas output pipeline are fixedly connected by a flange.

[0026] Further, a kiln waste gas treatment process for heating and spraying a sewing machine frame according to any one of the claims includes the following steps:

[0027] S1. Waste gas collection and pretreatment: The first collection pipe and the second collection pipe are used to collect the waste gas generated in the kiln for heating and spraying the sewing machine frame, and the waste gas is preliminarily filtered through the filter net or filter medium inside the dust filter to remove large particles, dust and other impurities. Finally, the pretreated waste gas is transported to the first output end through the second conveying fan for subsequent treatment;

[0028] S2. Main treatment of waste gas: First, the waste gas is treated by the filter bag in the bag filter, and then the waste gas passes through the activated carbon environmental adsorption box, which is filled with a large number of activated carbon particles. The pollutants in the waste gas are adsorbed on the surface of the activated carbon through physical adsorption, and then the waste gas passes through the dust collecting electrode tube and cathode line in the electrostatic precipitator to remove fine particles and droplets in the waste gas, and then the ozone in the desulfurization and denitrification equipment reacts with the NOx in the waste gas to convert it into harmless nitrogen and water, and then the F7 medium-efficiency filter bag and F9 high-efficiency filter bag in the dry filter are used to remove PM5 to PM2 particles in the waste gas;

[0029] S3. Post-treatment of waste gas: waste gas is treated by the adsorption performance of activated carbon in the adsorption box. When the waste gas passes through the activated carbon adsorption box, harmful substances are adsorbed on the surface of the activated carbon, and clean gas is discharged through the equipment. Then, oxygen is transported to the inside of the catalytic combustion furnace through the oxygen delivery pipe and oxygen delivery equipment. Then, ignition is performed through the ignition interface to start the combustion process, so that the mixed gas burns under the action of the catalyst. Under the action of the catalyst, the fuel and the combustion-supporting gas are completely burned at a lower temperature to generate harmless substances such as carbon dioxide and water vapor;

[0030] S4. Waste gas detection: The gas that has passed the above-mentioned waste gas treatment process will enter the detection instrument through the output pipe, and the gas detector will collect gas samples through the built-in gas sensor, convert the physical or chemical non-electrical signals into electrical signals, and then the electrical signals will be rectified, filtered, and processed by the external circuit. Finally, the corresponding modules will be controlled through the signal to realize gas detection and concentration display.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention can treat the waste gas from the kiln heated and sprayed by the sewing machine frame through the design of bag dust collector, activated carbon environmental adsorption box, electrostatic dust collector, desulfurization and denitrification equipment, dry filter and catalytic combustion equipment, thereby improving the efficiency of waste gas treatment, ensuring the purity of the gas discharged into the external environment and avoiding pollution.

[0033] 2. The present invention is provided with a cleaning structure inside the bag filter. The cleaning motor drives the rotating shaft to rotate, and then drives the scraper to rotate synchronously. The scraper can be used to scrape off the impurities on the filter bag to achieve the purpose of cleaning and avoid blockage caused by long-term use in the future.

[0034] 3. The present invention is provided with a detection instrument at the tail of the device. The gas detector in the detection instrument is used to detect the treated gas, including the flue gas components and concentration, volatile organic compounds, and the components and concentration of other harmful gases in the gas, which is convenient for the staff to view and understand.

[0035] The present invention will be explained in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic diagram of the overall process structure of the present invention;

[0037] Figure 2 is a three-dimensional structure diagram of the collection and pretreatment device of the present invention;

[0038] Figure 3 is an internal structure diagram of the bag filter of the present invention;

[0039] Figure 4 is an internal structure diagram of the electrostatic precipitator of the present invention;

[0040] Figure 5 is an internal structure diagram of the desulfurization and denitration equipment of the present invention;

[0041] Figure 6 is an internal structure diagram of the dry filter of the present invention;

[0042] Figure 7 is an internal structure diagram of the catalytic combustion equipment of the present invention.

[0043] In the figure: 1. Collection and pretreatment device; 11. First collection pipeline; 12. Second collection pipeline; 13. Dust filter; 14. Second delivery fan; 2. Bag filter; 21. Filter bag; 22. Cleaning motor; 23. Rotating shaft; 24. Connecting frame; 25. Scraper; 26. Impurity outlet; 3. Electrostatic precipitator; 31. First uniform distribution plate; 32. Second uniform distribution plate; 33. Cooling pipe; 34. Dust collection tube; 35. Cathode wire; 4. Desulfurization and denitrification equipment; 41. Ozone spray pipe; 42. Reaction cavity; 5. Dry filter; 51. F7 medium efficiency filter bag; 52. F9 high efficiency filter bag; 6. Catalytic combustion equipment; 61. Oxygen delivery equipment; 611. Oxygen delivery pipe; 612. Oxygen supply fan; 62. Adsorption box; 621. Activated carbon adsorption plate; 63. Catalytic combustion furnace; 631. Ignition interface; 632. Oxygen access pipe; 7. Detection instrument; 8. First output end; 9. First inlet; 10. First outlet; 15. Fourth inlet; 16. Fourth outlet; 17. Fifth inlet; 18. Fifth outlet; 19. Sixth outlet; 20. Activated carbon environmental protection adsorption box; 27. Second inlet; 28. Second outlet; 29. Third inlet; 30. Third outlet. Specific embodiments

[0044] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0045] Embodiment, please refer to Figures 1 to 7 , a kiln waste gas treatment system for heating and spraying of sewing machine frames, including a collection and pretreatment device 1, a bag filter 2, an activated carbon environmental protection adsorption box 20, an electrostatic precipitator 3, a desulfurization and denitrification equipment 4, a dry filter 5, a catalytic combustion equipment 6, and a detection instrument 7;

[0046] The output end of the collection and pretreatment device 1 is connected to a first output end 8. A first inlet 9 and a first outlet 10 are respectively arranged on the bag filter 2. A second inlet 27 and a second outlet 28 are respectively arranged on the electrostatic precipitator 3. A third inlet 29 and a third outlet 30 are respectively arranged on the desulfurization and denitrification equipment 4. A fourth inlet 15 and a fourth outlet 16 are respectively arranged on the dry filter 5;

[0047] The catalytic combustion equipment 6 respectively includes an oxygen delivery equipment 61, an adsorption box 62, and a catalytic combustion furnace 63. A fifth inlet 17 and a fifth outlet 18 are respectively arranged on the adsorption box 62. A sixth outlet 19 is further arranged on one side of the catalytic combustion furnace 63 away from the fifth outlet 18;

[0048] Between the first inlet 9 and the first output end 8, between the first outlet 10 and the input end of the activated carbon environmental protection adsorption box 20, between the output end of the activated carbon environmental protection adsorption box 20 and the second inlet 27, between the second outlet 28 and the third inlet 29, between the third outlet 30 and the fourth inlet 15, and between the fourth outlet 16 and the fifth inlet 17, they are all fixedly connected by flanges through pipelines. The fifth outlet 18 is internally connected to the catalytic combustion furnace 63, and the sixth outlet 19 is fixedly connected to the pipeline on the detection instrument 7.

[0049] Among them, the collection and pretreatment device 1 includes a first collection pipeline 11 and a second collection pipeline 12 for collecting waste gas. The first collection pipeline 11 is fixedly connected with a dust filter 13 and a second delivery fan 14 by flanges through pipelines. The output end of the second delivery fan 14 is fixedly connected to the input end of the first output end 8 by a flange. A filter screen is also arranged inside the dust filter 13. The first collection pipeline 11 and the second collection pipeline 12 are used to collect the waste gas generated in the kiln for heating and spraying of the sewing machine frame, and the waste gas is preliminarily filtered through the filter screen or filtering medium inside the dust filter 13 to remove impurities such as large particles and dust. Finally, the pretreated waste gas is transported to the first output end 8 by the second delivery fan 14 for subsequent treatment.

[0050] Among them, filter bags 21 are arranged inside the bag filter 2. A cleaning motor 22 is fixedly installed on the top of the bag filter 2. The bottom output end of the cleaning motor 22 is key-connected with a rotating shaft 23 penetrating into the bag filter 2. A plurality of connecting frames 24 are fixedly connected to the outer side of the rotating shaft 23. One side of the plurality of connecting frames 24 far from the rotating shaft 23 is fixedly connected with a scraper 25. The outer wall of the scraper 25 is in contact with the surface of the filter bag 21. An impurity outlet 26 is also arranged at the bottom of the bag filter 2. The impurities in the waste gas are captured and collected by the filter bags 21 in the bag filter 2. When it is necessary to clean the impurities on the filter bags 21, the cleaning motor 22 drives the rotating shaft 23 to rotate, and then drives the scraper 25 to rotate synchronously. The scraper 25 can be used to scrape the impurities on the filter bags 21 to achieve the purpose of cleaning and avoid blockage caused by long-term use in the future.

[0051] Among them, the electrostatic precipitator 3 includes a first uniform distribution plate 31 and a second uniform distribution plate 32 located below its interior. Above the second uniform distribution plate 32, there is a cooling pipe 33. The cooling pipe 33 is a serpentine pipe. Above the cooling pipe 33, there are also dust collecting tubes 34 and cathode wires 35. After the waste gas enters the interior of the electrostatic precipitator 3, the waste gas is evenly distributed through the uniform holes on the first uniform distribution plate 31, and then moves upward through the uniform holes on the second uniform distribution plate 32. Both ends of the cooling pipe 33 are connected to the externally circulated coolant, so as to cool the waste gas passing between the first uniform distribution plate 31 and the second uniform distribution plate 32. After cooling, the waste gas is evenly distributed through the uniform holes on the second uniform distribution plate 32, and then rises along the dust collecting tubes 34. Under the cooperation of the cathode wires 35 and the dust collecting tubes 34, harmful substances such as dust in the waste gas are adsorbed onto the dust collecting tubes 34. Since the working principles of the cathode wires 35 and the dust collecting tubes 34 are prior arts, they will not be elaborated here.

[0052] Among them, the desulfurization and denitrification equipment 4 includes an ozone spray pipe 41 located above its interior. The head of the ozone spray pipe 41 is connected to an ozone generator located outside. Inside the desulfurization and denitrification equipment 4, there is also a reaction cavity 42. The tail of the ozone spray pipe 41 communicates with the interior of the reaction cavity 42. Ozone is sprayed into the equipment through the ozone spray pipe 41, and the ozone reacts with NOx in the waste gas to convert it into harmless nitrogen (N2) and water (H2O), ensuring that the treated flue gas can be safely discharged into the atmosphere.

[0053] Among them, the dry filter 5 includes an F7 medium - efficiency filter bag 51 located on the left side of its interior and an F9 high - efficiency filter bag 52 located on the right side of the F7 medium - efficiency filter bag 51. Both the F7 medium - efficiency filter bag 51 and the F9 high - efficiency filter bag 52 are made of glass fiber. After the waste gas enters the dry filter 5, it is filtered by the F7 medium - efficiency filter bag 51 and then enters the F9 high - efficiency filter bag 52 for filtering, and is discharged after the particulate separation treatment and purification.

[0054] Among them, the oxygen delivery device 61 is fixedly installed on the top of the adsorption box 62 by bolts. A plurality of oxygen delivery pipes 611 are connected to the oxygen delivery device 61. On one side of the oxygen delivery pipe 611, an oxygen supplement fan 612 is fixedly connected by a flange. The input end of the oxygen supplement fan 612 is connected by a pipeline to an oxygen generation device located outside. An activated carbon adsorption plate 621 is arranged inside the adsorption box 62; An ignition interface 631 is installed above the interior of the catalytic combustion furnace 63. The top of the ignition interface 631 is connected to an oxygen access pipe 632. One side of the oxygen access pipe 632 away from the ignition interface 631 communicates with the interior of the oxygen delivery pipe 611; The waste gas is treated by the adsorption performance of the activated carbon in the adsorption box 62. When the waste gas passes through the activated carbon adsorption box, harmful substances are adsorbed on the surface of the activated carbon, while the clean gas is discharged through the device. Then, oxygen is transported into the catalytic combustion furnace 63 through the oxygen delivery pipe 611 and the oxygen delivery device 61. Then, an ignition action is carried out through the ignition interface 631 to start the combustion process, enabling the mixed gas to burn under the action of the catalyst. Under the action of the catalyst, the fuel and the combustion-supporting gas undergo complete combustion at a lower temperature, generating harmless substances such as carbon dioxide and water vapor.

[0055] Among them, the detection instrument 7 uses a gas detector, which includes a sensor, a control circuit board, a power supply module, a display screen, and an alarm inside. The two ends of the detection instrument 7 and the gas output pipeline are fixedly connected by a flange; The gas detector uses an internal gas sensor to collect gas samples, converts physical or chemical non-electric signals into electric signals, processes the electric signals through an external circuit for rectification, filtering, etc., and finally controls the corresponding modules through signals to achieve gas detection and concentration display. Finally, the electric signals are processed through an external circuit for rectification, filtering, etc., and finally the corresponding modules are controlled through signals to achieve gas detection and concentration display.

[0056] The present invention also proposes a kiln waste gas treatment process for sewing machine frame heating and spraying, including the following steps:

[0057] S1. Waste gas collection and pretreatment: The first collection pipe 11 and the second collection pipe 12 are used to collect the waste gas generated in the kiln for sewing machine frame heating and spraying, and the waste gas is preliminarily filtered through the filter screen or filter medium inside the dust filter 13 to remove impurities such as large particles and dust. Finally, the pretreated waste gas is transported to the first output end 8 by the second delivery fan 14 for subsequent treatment;

[0058] S2. Main treatment of waste gas: First, the waste gas is treated by the filter bag 21 in the bag filter 2, and then the waste gas passes through the activated carbon environmental adsorption box 20, which is filled with a large amount of activated carbon particles. The pollutants in the waste gas are adsorbed on the surface of the activated carbon by physical adsorption, and then the waste gas passes through the dust collecting electrode tube 34 and the cathode line 35 in the electrostatic precipitator 3 to remove fine particles and droplets in the waste gas, and then the ozone in the desulfurization and denitrification equipment 4 reacts with the NOx in the waste gas to convert it into harmless nitrogen and water, and then the F7 medium-efficiency filter bag 51 and the F9 high-efficiency filter bag 52 in the dry filter 5 are used to remove PM5 to PM2 particles in the waste gas;

[0059] S3, waste gas post-treatment: waste gas is treated by the adsorption performance of the activated carbon in the adsorption box 62. When the waste gas passes through the activated carbon adsorption box, harmful substances are adsorbed on the surface of the activated carbon, and clean gas is discharged through the equipment. Then, oxygen is transported to the inside of the catalytic combustion furnace 63 through the oxygen delivery pipe 611 and the oxygen delivery device 61. Then, ignition is performed through the ignition interface 631 to start the combustion process, so that the mixed gas burns under the action of the catalyst. Under the action of the catalyst, the fuel and the combustion-supporting gas are completely burned at a lower temperature to generate harmless substances such as carbon dioxide and water vapor;

[0060] S4. Waste gas detection: The gas that has passed the above-mentioned waste gas treatment process will enter the detection instrument 7 through the output pipeline, and the gas detector will collect gas samples through the built-in gas sensor, convert the physical or chemical non-electrical signal into an electrical signal, and the electrical signal will be rectified, filtered, etc. through an external circuit, and finally the corresponding module will be controlled by the signal to realize gas detection and concentration display. Finally, the electrical signal will be rectified, filtered, etc. through an external circuit, and finally the corresponding module will be controlled by the signal to realize gas detection and concentration display.

[0061] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A kiln waste gas treatment system for heating and spraying of sewing machine frames, comprising a collection and pretreatment device (1), a bag filter (2), an activated carbon environmental protection adsorption box (20), an electrostatic precipitator (3), a desulfurization and denitrification device (4), a dry filter (5), a catalytic combustion device (6) and a detection instrument (7), characterized in that: The output end of the collection and pretreatment device (1) is connected to a first output end (8). A first inlet (9) and a first outlet (10) are respectively arranged on the bag filter (2). A second inlet (27) and a second outlet (28) are respectively arranged on the electrostatic precipitator (3). A third inlet (29) and a third outlet (30) are respectively arranged on the desulfurization and denitrification equipment (4). A fourth inlet (15) and a fourth outlet (16) are respectively arranged on the dry filter (5). The catalytic combustion equipment (6) respectively includes an oxygen delivery device (61), an adsorption box (62) and a catalytic combustion furnace (63). A fifth inlet (17) and a fifth outlet (18) are respectively arranged on the adsorption box (62). A sixth outlet (19) is further arranged on one side of the catalytic combustion furnace (63) away from the fifth outlet (18). Between the first inlet (9) and the first output end (8), between the first outlet (10) and the input end of the activated carbon environmental protection adsorption box (20), between the output end of the activated carbon environmental protection adsorption box (20) and the second inlet (27), between the second outlet (28) and the third inlet (29), between the third outlet (30) and the fourth inlet (15), and between the fourth outlet (16) and the fifth inlet (17), they are all fixedly connected by flanges through pipes. The fifth outlet (18) is internally communicated with the catalytic combustion furnace (63). The sixth outlet (19) is fixedly connected with the pipe on the detection instrument (7). Among them, the electrostatic precipitator (3) includes a first uniform distribution plate (31) and a second uniform distribution plate (32) located below its interior. A cooling pipe (33) is arranged above the second uniform distribution plate (32). The cooling pipe (33) is a serpentine pipe. A dust collecting electrode tube (34) and a cathode wire (35) are further arranged above the cooling pipe (33). Among them, the oxygen delivery device (61) is fixedly installed on the top of the adsorption box (62) by bolts. A plurality of oxygen delivery pipes (611) are connected to the oxygen delivery device (61). A make-up oxygen fan (612) is fixedly connected to one side of the oxygen delivery pipe (611) by a flange. The input end of the make-up oxygen fan (612) is connected to an oxygen generating device located outside through a pipe. An activated carbon adsorption plate (621) is arranged inside the adsorption box (62). Among them, the process of applying the kiln waste gas treatment system to treat the kiln waste gas for sewing machine frame heating and spraying includes the following steps: S1. Waste gas collection and pretreatment: The first collection pipe (11) and the second collection pipe (12) are used to collect the waste gas generated in the kiln for sewing machine frame heating and spraying, and the waste gas is preliminarily filtered through the filter screen or filtering medium inside the dust filter (13) to remove impurities such as large particles and dust. Finally, the pretreated waste gas is transported to the first output end (8) by the second delivery fan (14) for subsequent treatment. S2. Main treatment of waste gas: first, the waste gas is treated by the filter bag (21) in the bag filter (2), and then the waste gas passes through the activated carbon environmental adsorption box (20). The activated carbon environmental adsorption box (20) is filled with activated carbon particles. The pollutants in the waste gas are adsorbed on the surface of the activated carbon by physical adsorption. After that, the waste gas passes through the dust collecting electrode tube (34) and the cathode line (35) in the electrostatic precipitator (3) to remove fine particles and droplets in the waste gas. Then, the ozone in the desulfurization and denitrification equipment (4) reacts with the NOx in the waste gas to convert it into harmless nitrogen and water. Subsequently, the PM5 to PM2 particles in the waste gas are removed by the F7 medium-efficiency filter bag (51) and the F9 high-efficiency filter bag (52) in the dry filter (5); S3, waste gas post-treatment: waste gas is treated by the adsorption performance of the activated carbon in the adsorption box (62). When the waste gas passes through the activated carbon adsorption box, harmful substances are adsorbed on the surface of the activated carbon, while clean gas is discharged through the device. Then, oxygen is transported to the inside of the catalytic combustion furnace (63) through the oxygen delivery pipe (611) and the oxygen delivery device (61). Then, ignition is performed through the ignition interface (631) to start the combustion process, so that the mixed gas burns under the action of the catalyst. Under the action of the catalyst, the fuel and the combustion-supporting gas are completely burned at a lower temperature to generate carbon dioxide and water vapor harmless substances; S4. Waste gas detection: The gas that has passed through the above-mentioned waste gas treatment process will enter the detection instrument (7) through the output pipeline, and the gas detector will collect gas samples through the built-in gas sensor, convert the physical or chemical non-electrical signal into an electrical signal, and then rectify and filter the electrical signal through an external circuit, and finally control the corresponding module through the signal to realize gas detection and concentration display; finally, the electrical signal is rectified and filtered through an external circuit, and finally the gas detection and concentration display are realized through the signal control of the corresponding module.

2. The kiln waste gas treatment system for heating and spraying of a sewing machine frame according to claim 1, wherein: The collection and pretreatment device (1) comprises a first collection pipe (11) and a second collection pipe (12) for collecting waste gas, wherein the first collection pipe (11) is fixedly connected to a dust filter (13) and a second conveying fan (14) via a pipe flange, the output end of the second conveying fan (14) is fixedly connected to the input end of the first output end (8) via a flange, and a filter screen is also arranged inside the dust filter (13).

3. The waste gas treatment system for heating and spraying of a sewing machine frame according to claim 2, wherein: A filter bag (21) is arranged inside the bag filter (2), a cleaning motor (22) is fixedly mounted on the top of the bag filter (2), a rotating shaft (23) penetrating into the bag filter (2) is connected to the bottom output end of the cleaning motor (22), a plurality of connecting frames (24) are fixedly connected to the outside of the rotating shaft (23), a plurality of connecting frames (24) are fixedly connected to a side away from the rotating shaft (23) of the connecting frames (24), a scraper (25) is fixedly connected, wherein the outer wall of the scraper (25) is in contact with the surface of the filter bag (21), and an impurity outlet (26) is also arranged at the bottom of the bag filter (2).

4. A kiln waste gas treatment system for heating and spraying a sewing machine frame according to claim 3, characterized in that: The desulfurization and denitrification equipment (4) includes an ozone nozzle (41) located above its interior. The head of the ozone nozzle (41) is connected to an ozone generator located outside. A reaction chamber (42) is also provided inside the desulfurization and denitrification equipment (4), and the tail of the ozone nozzle (41) communicates with the interior of the reaction chamber (42).

5. A kiln waste gas treatment system for heating and spraying a sewing machine frame according to claim 4, characterized in that: The dry filter (5) includes an F7 medium - efficiency filter bag (51) located on the left side of its interior and an F9 high - efficiency filter bag (52) located on the right side of the F7 medium - efficiency filter bag (51). Both the F7 medium - efficiency filter bag (51) and the F9 high - efficiency filter bag (52) are made of fiberglass.

6. The kiln waste gas treatment system for heating and spraying of a sewing machine frame according to claim 1, characterized in that: An ignition interface (631) is installed above the interior of the catalytic combustion furnace (63). The top of the ignition interface (631) is connected to an oxygen access pipe (632), and one side of the oxygen access pipe (632) away from the ignition interface (631) communicates with the interior of the oxygen delivery pipe (611).

7. A kiln waste gas treatment system for heating and spraying a sewing machine frame according to claim 6, characterized in that: The detection instrument (7) uses a gas detector, which includes a sensor, a control circuit board, a power module, a display screen, and an alarm inside. Both ends of the detection instrument (7) and the gas output pipeline are fixedly connected by flanges.

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