Automatic operation desorption control method

Abstract

The invention provides an automatic operation desorption control method, which relates to the technical field of waste gas treatment, and comprises the following steps: S1, a controller controls an adsorption part in an adsorption box to start heating and suck waste gas; s2, the controller controls preheating of a conversion part of the catalytic combustion furnace, and when preheating reaches 250 DEG C or above, waste gas is conveyed to the conversion part of the catalytic combustion furnace and then conversion is started; s3, the controller controls a catalytic desorption part of the catalytic combustion furnace to be heated to 350 DEG C or above, and the converted waste gas is subjected to combustion desorption; s4, after desorption is completed, the waste gas passes through a desorption fan and then passes through a tail gas recovery device to be discharged; and S5, the controller controls an adsorption part in the adsorption box and a catalytic desorption part of the catalytic combustion furnace to be cooled, when the temperature of the adsorption part is lower than 45 DEG C, cooling is completed, and when the temperature of the catalytic desorption part is lower than 150 DEG C, cooling is completed. The catalytic combustion temperature is stabilized in a high range, the desorption time can be shortened, heat energy recovery is facilitated, and energy is saved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to an automatic desorption control method. Background Art

[0002] At present, the waste gas treatment equipment used more in the market is the adsorption-desorption integrated waste gas treatment equipment, which is composed of a catalytic furnace composed of a heat exchanger, a heater, and a catalytic bed, a desorption fan, a cooling fan, an adsorption fixed bed, an adsorption air valve and air duct, a desorption air valve and air duct, etc.

[0003] The controller generally sets the adsorption time and desorption time; no matter what the exhaust gas is composed of or how much exhaust gas is adsorbed, desorption is considered completed after a certain period of time. The desorption time has nothing to do with the amount of adsorption. When the adsorption amount is small, desorption according to the established desorption time will cause energy waste. When the adsorption amount is large, desorption cannot be completed according to the established desorption time, resulting in poor desorption effect and high desorption energy consumption. In addition, existing exhaust gas treatment equipment often directly discharges after only one treatment, with low treatment accuracy and poor treatment quality. Summary of the invention

[0004] The present invention provides an automatically operated desorption control method to solve at least one of the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses an automatic desorption control method, comprising the following steps:

[0006] S1: The controller controls the adsorption part in the adsorption box to start heating and inhale the exhaust gas;

[0007] S2: The controller controls the preheating of the conversion part of the catalytic combustion furnace. When the preheating reaches above 250°C, the exhaust gas is transported to the conversion part of the catalytic combustion furnace and then the conversion begins;

[0008] S3: The controller controls the catalytic desorption part of the catalytic combustion furnace to heat to above 350°C, and burns and desorbs the converted exhaust gas;

[0009] S4: After desorption is completed, the waste gas passes through the desorption fan and then through the tail gas recovery device for discharge;

[0010] S5: The controller controls the adsorption part in the adsorption box and the catalytic desorption part of the catalytic combustion furnace to cool down. The cooling is completed when the temperature of the adsorption part is less than 45°C, and the cooling is completed when the temperature of the catalytic desorption part is less than 150°C.

[0011] Preferably, in step S2, the controller controls the preheating temperature range of the conversion part to be 250°C-350°C; the controller controls the preheating temperature range of the catalytic desorption part to be 350°C-480°C.

[0012] Preferably, in steps S1-S5, a thermometer 1 is provided in the conversion section, a thermometer 2 is provided in the catalytic desorption section, and a thermometer 3 is provided in the adsorption section, and the thermometers 1, 2 and 3 are electrically connected to the controller.

[0013] Preferably, in steps S4-S5, the adsorption box is also connected to an exhaust fan, the exhaust end of the exhaust fan is provided with an exhaust pipe, and the exhaust end of the desorption fan is connected to the exhaust pipe.

[0014] Preferably, an exhaust gas recovery device is provided on the exhaust pipe, and the exhaust gas recovery device includes a box body, and filter boxes are symmetrically arranged on the left and right sides of the box body. The filter boxes are provided with output pipes on the sides close to each other, and the output pipes extend into the box body. Adsorption liquid is arranged in the box body, and two discharge pipes are arranged at the upper end of the box body.

[0015] Preferably, a partition plate is provided in the filter box, which divides the filter box into a first chamber and a second chamber. The second chamber is farther away from the box body than the first chamber. A special-shaped filter bag is provided in the second chamber. An opening one is provided at the lower end of the special-shaped filter bag, and an opening two is provided at the lower end of the second chamber. The opening one corresponds to the opening two. A connecting pipe is installed at the opening two, and the connecting pipe is connected to the exhaust pipe. A filter sheet is provided in the first chamber; a plurality of obliquely arranged nozzles are installed on the output pipe, and the two output pipes are symmetrical along the center of the box body.

[0016] Preferably, a rotating rod is rotatably connected to the upper inner wall of the box body, a plurality of blades are fixedly provided on the rotating rod, a connecting rod is symmetrically fixedly provided on the rotating rod, a scraper is fixedly provided at one end of the connecting rod away from each other, and the scraper abuts against the inner wall of the box body.

[0017] Preferably, a dust collecting box is fixedly provided at the lower end of the box body, and a vertical plate is fixedly provided on the lower inner wall of the dust collecting box, and the vertical plate divides the dust collecting box into two left and right dust collecting areas; a dust collecting hose is also connected to the connecting pipe, and the dust collecting hose has through grooves on the left and right sides of the dust collecting box. The dust collecting hose extends from the through groove into the dust collecting box, and the other end of the dust collecting hose is connected to the output box.

[0018] Preferably, a sliding plate is slidably connected to one side of the vertical plate, and the sliding plate is slidably connected to the inner wall of the dust collecting box, a vertical rod is fixedly provided at the lower end of the sliding plate, a sleeve is fixedly provided on the lower inner wall of the dust collecting box, the vertical rod slidably extends into the sleeve, a pushing plate is fixedly provided at the lower end of the vertical rod, a spring 1 is sleeved on the vertical rod, one end of the spring 1 is fixedly connected to the sliding plate, and the other end of the spring 1 is fixedly connected to the upper surface of the sleeve, a driving liquid is provided in the sleeve, a conduction tube is connected through the sleeve, the conduction tube is fixedly extended out of the dust collecting box, the other end of the conduction tube is connected through the fixed tube, a connecting rod is slidably provided in the fixed tube, the connecting rod slidably extends out of the fixed tube, and the other end of the connecting rod is fixedly connected to the output box.

[0019] Preferably, a movable plate is slidably arranged in the fixed tube, the movable plate is fixedly connected to the connecting rod, one end of the movable plate is fixedly connected to the second spring, and the other end of the second spring is connected to the fixed tube;

[0020] A through groove begins to be provided on the rear side wall of the dust collecting box, and a sliding rod is fixedly connected to the rear side of the output box, the sliding rod extends out of the output box from the through groove, the sliding rod is slidably connected to the through groove, the rear side of the sliding rod is fixedly connected to a moving block, the moving block is fixedly connected to a driving rod, the driving rod is fixedly provided with a rack, the rear side of the box body is rotatably connected to a rotating shaft, the rotating shaft is fixedly provided with a gear and a cam, the rack is meshed with the gear, a fixed block symmetrical on the rear side of the box body is fixedly provided, a push rod slides through the fixed block, an abutment plate is fixedly provided on the side where the push rods are close to each other, the abutment plate abuts with the cam, and a U-shaped plate is fixedly provided on the side where the push rods are away from each other, the U-shaped plate slides and extends into the second chamber, and the other end of the U-shaped plate is fixedly connected to the extrusion plate, a spring three is sleeved on the push rod, one end of the spring three is fixedly connected to the fixed block, and the other end of the spring three is fixedly connected to the abutment plate.

[0021] Compared with the prior art, the present invention provides an automatically operated desorption control method. The present invention adjusts the desorption temperature so that the catalytic combustion temperature is stabilized within a relatively high range, thereby shortening the desorption time and achieving a better desorption effect. At the same time, it is beneficial to recover heat energy and save energy. If there is no exhaust gas or desorption is completed, the catalytic combustion furnace enters the shutdown procedure as soon as possible, which also saves energy. In addition, an exhaust gas recovery device is provided to perform secondary treatment on the exhaust gas after desorption, with higher processing accuracy and better processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the process of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the tail gas treatment device of the present invention;

[0026] Figure 4 For the present invention Figure 3 Rear view of

[0027] Figure 5 It is a schematic diagram of the installation of the output pipe and the nozzle of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the fixed tube of the present invention;

[0029] Figure 7 It is a schematic structural diagram of the special-shaped filter bag of the present invention.

[0030] In the figure: 1, catalytic combustion furnace; 2, conversion unit; 3, catalytic desorption unit; 4, adsorption box; 5, adsorption unit; 6, desorption fan; 7, discharge fan; 8, thermometer 1; 9, thermometer 2; 10, thermometer 3; 11, box; 12, rotating rod; 13, discharge pipe; 14, partition plate; 15, filter box; 16, scraper; 17, connecting rod; 18, blade; 19, output pipe; 20, dust box; 21, dust collection hose; 22, vertical plate; 23, spring 1; 24, sleeve; 25, push Plate; 26, vertical rod; 27, conduction tube; 28, sliding plate; 29, fixed tube; 30, connecting tube; 31, output box; 32, U-shaped plate; 33, extrusion plate; 34, special-shaped filter bag; 35, second chamber; 36, first chamber; 37, fixed block; 38, gear; 39, cam; 40, spring three; 41, driving rod; 42, moving block; 43, through groove; 44, push rod; 45, rotating shaft; 46, rack; 47, nozzle; 48, spring two; 49, moving plate; 50, connecting rod. DETAILED DESCRIPTION

[0031] 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.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] The embodiment of the present invention provides an automatic desorption control method, such as Figure 1-7 As shown, the following steps are included:

[0036] S1: The controller controls the adsorption part 5 in the adsorption box 4 to start heating and inhaling exhaust gas;

[0037] S2: The controller controls the conversion part 2 of the catalytic combustion furnace 1 to preheat. When the preheating temperature reaches above 250°C, the exhaust gas is transported to the conversion part 2 of the catalytic combustion furnace 1 and then conversion begins;

[0038] S3: The controller controls the catalytic desorption part 3 of the catalytic combustion furnace 1 to heat to above 350° C. to burn and desorb the converted exhaust gas;

[0039] S4: After the desorption is completed, the waste gas passes through the desorption fan 6 and then passes through the tail gas recovery device for discharge;

[0040] S5: The controller controls the adsorption part 5 in the adsorption box 4 and the catalytic desorption part 3 of the catalytic combustion furnace 1 to cool down. The cooling is completed when the temperature of the adsorption part 5 is less than 45°C, and the cooling is completed when the temperature of the catalytic desorption part 3 is less than 150°C.

[0041] The working principle and beneficial effects of the above technical solution are as follows: first, the controller controls the adsorption part 5 in the adsorption box 4 to start heating and inhaling the exhaust gas; second, the controller controls the preheating of the conversion part 2 of the catalytic combustion furnace 1. When the preheating reaches above 250°C, the exhaust gas is transported to the conversion part 2 of the catalytic combustion furnace 1 and then starts to be converted; third, the controller controls the catalytic desorption part 3 of the catalytic combustion furnace 1 to heat to above 350°C, and burns and desorbs the converted exhaust gas; fourth, after the desorption is completed, the exhaust gas passes through the desorption fan 6 and then passes through the exhaust gas recovery device for discharge; fifth, the controller controls the adsorption part 5 in the adsorption box 4 and the catalytic desorption part 3 of the catalytic combustion furnace 1 to cool down. When the temperature of the adsorption part 5 is less than 45°C, the cooling is completed, and when the temperature of the catalytic desorption part 3 is lower than 150°C, the cooling is completed;

[0042] The present invention adjusts the desorption temperature so that the catalytic combustion temperature is stabilized within a relatively high range, thereby shortening the desorption time and achieving a better desorption effect, while also facilitating heat recovery and saving energy. If there is no exhaust gas or desorption is completed, the catalytic combustion furnace 1 enters the shutdown procedure as soon as possible, which also saves energy. In addition, a tail gas recovery device is provided to perform secondary treatment on the exhaust gas after desorption, with higher treatment accuracy and better treatment effect.

[0043] Example 2

[0044] On the basis of the above-mentioned embodiment 1, Figure 1-2 As shown, in step S2, the controller controls the preheating temperature range of the conversion unit 2 to be 250°C-350°C; the controller controls the preheating temperature range of the catalytic desorption unit 3 to be 350°C-480°C.

[0045] Among them, preferably, in steps S1-S5, a thermometer 1 8 is provided in the conversion section 2, a thermometer 2 9 is provided in the catalytic desorption section 3, and a thermometer 3 10 is provided in the adsorption section 5, and the thermometer 1 8, the thermometer 2 9 and the thermometer 3 10 are electrically connected to the controller.

[0046] Among them, key temperature measurement points, such as the catalytic desorption section 3, can use dual-point temperature measurement sensors to ensure accurate temperature measurement and avoid danger caused by sensor failure.

[0047] Preferably, the adsorption box 4 is also connected to an exhaust fan 7, an exhaust pipe is provided at the exhaust end of the exhaust fan 7, and the exhaust end of the desorption fan 6 is connected to the exhaust pipe.

[0048] Among them, a valve is provided on the discharge end of the discharge fan 7, and the discharge fan 7 is normally closed;

[0049] Among them, the controller can judge the changing trend of the catalytic combustion temperature according to the feedback from the thermometer, and can be set to 1s-60s / time adjustable. The shorter the judgment time interval, the more timely the desorption hot air temperature can be adjusted, thereby achieving precise control of the temperature of the catalytic desorption part 3.

[0050] The beneficial effects of the above technical solution are as follows: the temperature is fed back to the controller through thermometer 1 8, thermometer 2 9 and thermometer 3 10, and the desorption temperature is quickly and timely adjusted according to the catalytic combustion temperature to control the temperature of the adsorption part 5 (wherein, the adsorption part is provided with zeolite molecular sieve or activated carbon), so as to control the amount of waste gas desorbed, thereby making the desorption run automatically; when the temperature of the adsorption part 5 (zeolite molecular sieve or activated carbon) in the adsorption box 4 is lower than 45°C, the cooling of the adsorption box 4 is completed; when the temperature of the catalytic desorption part 3 (wherein, the catalytic desorption part 3 is provided with a catalyst, and the catalyst is a honeycomb catalyst block) in the combustion catalytic furnace 1 is lower than 150°C, the cooling of the catalytic furnace is completed.

[0051] Example 3

[0052] Based on the above embodiment 2, Figure 3-7 As shown, an exhaust gas recovery device is provided on the exhaust pipe, and the exhaust gas recovery device includes a box body 11, and filter boxes 15 are symmetrically provided on the left and right sides of the box body 11. The filter boxes 15 are provided with output pipes 19 on the sides close to each other, and the output pipes 19 extend into the box body 11. Adsorption liquid is provided in the box body 11, and two discharge pipes 13 are provided at the upper end of the box body 11.

[0053] The working principle and beneficial effects of the above technical solution are as follows: after desorption is completed, the desorption fan 6 transports the exhaust gas to the filter box 15, and the exhaust gas passes through the filter box 15 and is transported to the box body 11 through the output pipe 19. The adsorption liquid in the box body 11 adsorbs the particulate matter in the exhaust gas. After the adsorption is completed, the exhaust gas can be discharged from the two exhaust pipes 13; by setting the filter box 15 and the box body 11, secondary treatment can be completed, the treatment effect is better, and the treatment accuracy is higher.

[0054] Example 4

[0055] Based on the above embodiment 3, Figure 3-7 As shown, a partition plate 14 is provided in the filter box 15, and the partition plate 14 divides the filter box 15 into a first chamber 36 and a second chamber 35. The second chamber 35 is farther away from the box body 11 than the first chamber 36. A special-shaped filter bag 34 is provided in the second chamber 35. An opening 1 is provided at the lower end of the special-shaped filter bag 34, and an opening 2 is provided at the lower end of the second chamber 35. The opening 1 corresponds to the opening 2. A connecting pipe 30 is installed at the opening 2, and the connecting pipe 30 is connected to the exhaust pipe. A filter sheet is provided in the first chamber 36; a plurality of obliquely arranged nozzles 47 are installed on the output pipe 19, and the two output pipes 19 are symmetrical along the center of the box body 11.

[0056] Among them, preferably, a rotating rod 12 is rotatably connected to the upper inner wall of the box body 11, and a plurality of blades 18 are fixedly provided on the rotating rod 12. A connecting rod 17 is also symmetrically fixedly provided on the rotating rod 12, and a scraper 16 is fixedly provided at one end of the connecting rod 17 away from each other, and the scraper 16 abuts against the inner wall of the box body 11.

[0057] Among them, Figure 7 As shown, the special-shaped filter bag 34 is provided with a pleated portion and a supporting portion. When the special-shaped filter bag 34 takes in air, the pleated portion can realize self-cleaning of dust by expanding or contracting.

[0058] The working principle and beneficial effects of the above technical solution are as follows: the exhaust gas enters the special-shaped filter bag 34 through the connecting pipe 30, and after being filtered by the special-shaped filter bag 34, the exhaust gas enters the first chamber 36, and then enters the output pipe 19 after being filtered by the filter plate, and then is sprayed out from the nozzle 47. Since the nozzle 47 is arranged obliquely, the airflow will cause the adsorption liquid in the box body 11 to start rotating, and the adsorption liquid drives a number of blades 18 to rotate, thereby causing the rotating rod 12, and the rotating rod 12 drives the scraper 16 to rotate; by setting a number of obliquely arranged nozzles 47, the exhaust gas can be sprayed to the adsorption liquid at multiple angles, and the rotation of the adsorption liquid will also make the exhaust gas contact with the adsorption liquid in a larger range, and the adsorption effect is better; at the same time, due to the rotation of the rotating rod 12, the scraper 16 can clean the inner wall of the box body 11, which is more functional and more practical.

[0059] Example 5

[0060] On the basis of the above-mentioned embodiment 4, Figure 3 As shown, a dust box 20 is fixedly provided at the lower end of the box body 11, and a vertical plate 22 is fixedly provided on the lower inner wall of the dust box 20, and the vertical plate 22 divides the dust box 20 into two left and right dust collecting areas; a dust collecting hose 21 is also connected to the connecting pipe 30, and the dust collecting hose 21 is provided with through grooves on the left and right sides of the dust box 20. The dust collecting hose 21 extends from the through groove into the dust box 20, and the other end of the dust collecting hose 21 is connected to the output box 31.

[0061] The working principle and beneficial effects of the above technical solution are as follows: the dust filtered by the special-shaped filter bag 34 enters the dust collecting hose 21, and then enters the output box 31, and then the dust falls from the output box 31 into the dust collecting box 20; by setting up the dust collecting box 20, the dust can be effectively collected and processed in a centralized manner, which is more convenient to use and easier to operate.

[0062] Example 6

[0063] On the basis of the above-mentioned embodiment 5, Figure 3-7 As shown, a sliding plate 28 is slidably connected to one side of the vertical plate 22, and the sliding plate 28 is slidably connected to the inner wall of the dust box 20, a vertical rod 26 is fixedly provided at the lower end of the sliding plate 28, a sleeve 24 is fixedly provided on the lower inner wall of the dust box 20, the vertical rod 26 slides and extends into the sleeve 24, a pushing plate 25 is fixedly provided at the lower end of the vertical rod 26, a spring 23 is sleeved on the vertical rod 26, one end of the spring 23 is fixedly connected to the sliding plate 28, and the other end of the spring 23 is fixedly connected to the upper surface of the sleeve 24, a driving liquid is provided in the sleeve 24, a conduction tube 27 is connected through the sleeve 24, the conduction tube 27 is fixedly extended out of the dust box 20, and the other end of the conduction tube 27 is connected through the fixed tube 29, a connecting rod 50 is slidably provided in the fixed tube 29, the connecting rod 50 slides and extends out of the fixed tube 29, and the other end of the connecting rod 50 is fixedly connected to the output box 31.

[0064] Preferably, a movable plate 49 is slidably disposed in the fixed tube 29, the movable plate 49 is fixedly connected to the connecting rod 50, one end of the movable plate 49 is fixedly connected to the spring 2 48, and the other end of the spring 2 48 is connected to the fixed tube 29;

[0065] A through groove 43 is formed on the rear wall of the dust box 20, a sliding rod is fixedly connected to the rear side of the output box 31, the sliding rod extends out of the output box 31 from the through groove 43, the sliding rod is slidably connected to the through groove 43, a moving block 42 is fixedly connected to the rear side of the sliding rod, a driving rod 41 is fixedly connected to the moving block 42, a rack 46 is fixedly arranged on the driving rod 41, a rotating shaft 45 is rotatably connected to the rear side of the box body 11, a gear 38 and a cam 39 are fixedly arranged on the rotating shaft 45, the rack 46 is meshed with the gear 38, and a fixed device 46 is fixedly arranged on the rear side of the box body 11. A left-right symmetrical fixed block 37 is provided, and a push rod 44 is slidably penetrated on the fixed block 37. An abutment plate is fixedly provided on the side where the push rods 44 are close to each other, and the abutment plate abuts against the cam 39. A U-shaped plate 32 is fixedly provided on the side where the push rods 44 are away from each other, and the U-shaped plate 32 slides and extends into the second chamber 35, and the other end of the U-shaped plate 32 is fixedly connected to the extrusion plate 33. A spring three 40 is sleeved on the push rod 44, and one end of the spring three 40 is fixedly connected to the fixed block 37, and the other end of the spring three 40 is fixedly connected to the abutment plate.

[0066] The working principle and beneficial effects of the above technical solution are as follows: dust will fall from the output box 31 onto the sliding plate 28, and then as the dust gradually increases, the sliding plate 28 will gradually drop, the sliding plate 28 drives the vertical rod 26 to drop, the vertical rod 26 drives the push plate 25 to drop, the push plate 25 inputs the driving liquid in the sleeve 24 into the fixed tube 29 through the conductive tube 27, the driving liquid drives the moving plate 49 to move, the moving plate 49 drives the connecting rod 50 to move, the connecting rod 50 drives the output box 31 to move, the output box 31 will make the dust fall to the other side of the vertical plate 22, and then the dust on the sliding plate 28 can be cleaned;

[0067] During the movement of the output box 31, the output box 31 drives the sliding rod to move, the sliding rod drives the moving block 42 to move, the moving block 42 drives the driving rod 41 to move, the driving rod 41 drives the rack 46 to move, the rack 46 drives the gear 38 to rotate, the gear 38 drives the cam 39 to rotate through the rotating shaft 45, the rotation of the cam 39 causes the two abutment plates to move in opposite directions, and under the action of the spring 3 40, the two abutment plates move toward each other, so that the U-shaped plate 32 continuously moves toward and in opposite directions, the U-shaped plate 32 causes the extrusion plate 33 to squeeze the special-shaped filter bag 34, thereby changing the folds on the special-shaped filter bag 34, and further discharging more dust;

[0068] When the dust on the sliding plate 28 is cleaned, the driving liquid returns to the sleeve 24 under the action of the spring 2 48 and the spring 1 23, and the dust on the other side of the vertical plate 22 can be cleaned;

[0069] By setting the sliding of the sliding plate 28, the falling position of the dust can be changed, that is, it can fall on both sides of the vertical plate 22, which is more convenient for cleaning. It can also be judged whether cleaning is needed from the moving position of the moving block 42. The sliding of the sliding plate 28 can also make the squeezing plate 33 squeeze the special-shaped filter bag 34, so as to easily clean the special-shaped filter bag 34. The whole device has a simple structure and is easy to use, which effectively improves the convenience and practicality of the device.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. An automatic desorption control method, characterized in that: The following steps are included: S1: The controller controls the adsorption part (5) in the adsorption box (4) to start heating and inhaling the exhaust gas; S2: The controller controls the preheating of the conversion part (2) of the catalytic combustion furnace (1). When the preheating temperature reaches above 250° C., the exhaust gas is transported to the conversion part (2) of the catalytic combustion furnace (1) and then conversion begins; S3: the controller controls the catalytic desorption part (3) of the catalytic combustion furnace (1) to heat to above 350° C., and burns and desorbs the converted exhaust gas; S4: After desorption is completed, the waste gas passes through the desorption fan (6) and then passes through the tail gas recovery device for discharge; S5: The controller controls the cooling of the adsorption section (5) in the adsorption box (4) and the catalytic desorption section (3) of the catalytic combustion furnace (1). The cooling is completed when the temperature of the adsorption section (5) is less than 45° C., and the cooling is completed when the temperature of the catalytic desorption section (3) is less than 150° C.

2. The automatic desorption control method according to claim 1, characterized in that: In step S2, the controller controls the preheating temperature range of the conversion section (2) to be 250°C-350°C; the controller controls the preheating temperature range of the catalytic desorption section (3) to be 350°C-480°C.

3. The automatic desorption control method according to claim 1, characterized in that: In steps S1-S5, a thermometer 1 (8) is provided in the conversion section (2), a thermometer 2 (9) is provided in the catalytic desorption section (3), and a thermometer 3 (10) is provided in the adsorption section (5). The thermometer 1 (8), the thermometer 2 (9) and the thermometer 3 (10) are electrically connected to the controller.

4. The automatic desorption control method according to claim 1, characterized in that: In steps S4-S5, the adsorption box (4) is also connected to an exhaust fan (7), the exhaust end of the exhaust fan (7) is provided with an exhaust pipe, and the exhaust end of the desorption fan (6) is connected to the exhaust pipe.

5. The automatic desorption control method according to claim 4, characterized in that: An exhaust gas recovery device is arranged on the exhaust pipe, and the exhaust gas recovery device comprises a box body (11). Filter boxes (15) are symmetrically arranged on the left and right sides of the box body (11). An output pipe (19) is arranged on the side close to each other of the filter box (15). The output pipe (19) extends into the box body (11). Adsorption liquid is arranged in the box body (11). Two discharge pipes (13) are arranged at the upper end of the box body (11).

6. The automatic desorption control method according to claim 5, characterized in that: A partition plate (14) is arranged in the filter box (15), and the partition plate (14) divides the filter box (15) into a first chamber (36) and a second chamber (35). The second chamber (35) is farther away from the box body (11) than the first chamber (36). A special-shaped filter bag (34) is arranged in the second chamber (35). An opening 1 is arranged at the lower end of the special-shaped filter bag (34). An opening 2 is arranged at the lower end of the second chamber (35). The opening 1 corresponds to the opening 2. A connecting pipe (30) is installed at the opening 2. The connecting pipe (30) is connected to the exhaust pipe. A filter sheet is arranged in the first chamber (36). A plurality of obliquely arranged nozzles (47) are installed on the output pipe (19), and the two output pipes (19) are symmetrical along the center of the box body (11).

7. The automatic desorption control method according to claim 6, characterized in that: A rotating rod (12) is rotatably connected to the inner wall of the upper side of the box body (11), a plurality of blades (18) are fixedly arranged on the rotating rod (12), a connecting rod (17) is symmetrically fixedly arranged on the rotating rod (12), a scraper (16) is fixedly arranged at one end of the connecting rod (17) away from each other, and the scraper (16) abuts against the inner wall of the box body (11).

8. The automatic desorption control method according to claim 6, characterized in that: A dust collecting box (20) is fixedly arranged at the lower end of the box body (11), and a vertical plate (22) is fixedly arranged on the inner wall of the lower side of the dust collecting box (20), and the vertical plate (22) divides the dust collecting box (20) into two left and right dust collecting areas; a dust collecting hose (21) is also connected through the connecting pipe (30), and the dust collecting hose (21) is provided with through grooves on the left and right sides of the dust collecting box (20), and the dust collecting hose (21) extends from the through groove into the dust collecting box (20), and the other end of the dust collecting hose (21) is connected through the output box (31).

9. The automatic desorption control method according to claim 8, characterized in that: A sliding plate (28) is slidably connected to one side of the vertical plate (22), and the sliding plate (28) is slidably connected to the inner wall of the dust collecting box (20). A vertical rod (26) is fixedly arranged at the lower end of the sliding plate (28), and a sleeve (24) is fixedly arranged on the lower inner wall of the dust collecting box (20). The vertical rod (26) slides and extends into the sleeve (24). A pushing plate (25) is fixedly arranged at the lower end of the vertical rod (26). A spring (23) is sleeved on the vertical rod (26), and one end of the spring (23) is fixed to the sliding plate (28). The other end of the spring 1 (23) is fixedly connected to the upper surface of the sleeve (24), a driving liquid is arranged in the sleeve (24), a conduction tube (27) is connected through the sleeve (24), the conduction tube (27) is fixedly extended out of the dust collecting box (20), the other end of the conduction tube (27) is connected through the fixed tube (29), a connecting rod (50) is slidably arranged in the fixed tube (29), the connecting rod (50) is slidably extended out of the fixed tube (29), and the other end of the connecting rod (50) is fixedly connected to the output box (31).

10. The automatic desorption control method according to claim 9, characterized in that: A movable plate (49) is slidably arranged in the fixed tube (29), the movable plate (49) is fixedly connected to the connecting rod (50), one end of the movable plate (49) is fixedly connected to the second spring (48), and the other end of the second spring (48) is connected to the fixed tube (29); A through groove (43) is formed on the rear wall of the dust collecting box (20); a sliding rod is fixedly connected to the rear side of the output box (31); the sliding rod extends out of the output box (31) from the through groove (43); the sliding rod is slidably connected to the through groove (43); a moving block (42) is fixedly connected to the rear side of the sliding rod; a driving rod (41) is fixedly connected to the moving block (42); a rack (46) is fixedly arranged on the driving rod (41); a rotating shaft (45) is rotatably connected to the rear side of the box body (11); a gear (38) and a cam (39) are fixedly arranged on the rotating shaft (45); the rack (46) is meshed with the gear (38); the rear side of the box body (11) A fixed block (37) is fixedly provided with left-right symmetry, a push rod (44) is slidably penetrated on the fixed block (37), an abutment plate is fixedly provided on the side of the push rods (44) close to each other, the abutment plate abuts against the cam (39), a U-shaped plate (32) is fixedly provided on the side of the push rods (44) away from each other, the U-shaped plate (32) slides and extends into the second chamber (35), and the other end of the U-shaped plate (32) is fixedly connected to the extrusion plate (33), and a spring three (40) is sleeved on the push rod (44), one end of the spring three (40) is fixedly connected to the fixed block (37), and the other end of the spring three (40) is fixedly connected to the abutment plate.

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