A volatile organic matter monitoring device and method for sludge incinerator

Abstract

The present invention discloses a volatile organic matter monitoring device and method for a sludge incinerator, comprising a shell, wherein a partition plate 1 is horizontally provided in the inner cavity of the shell, a partition plate 2 is vertically provided in the circulation cavity 2, a rotating filter element adapted to the inner cavity of the shell is provided in the partition plate 1, the other end of the circulation cavity 1 is connected to the draft device through the air intake duct, an exhaust port penetrating the side wall of the shell is provided in the assembly cavity, the organic gas monitor is connected with a probe, and the probe extends into the circulation cavity 1 and is located between the rotating filter element and the input end of the air intake duct, an impeller element driven to rotate by gas is provided in the assembly cavity, and the impeller element and the rotating filter element are connected by a transmission component. The present invention is provided with a rotating filter element to filter the gas in contact with the probe, so as to avoid damage to the probe by large particles of impurities in the gas, and also to prevent blockage inside the shell, thereby increasing the service life of the device.

Description

Technical Field

[0001] The invention relates to the technical field of sludge incineration monitoring, and in particular to a volatile organic matter monitoring device and method for a sludge incinerator. Background Art

[0002] Sludge incineration is a process of sludge treatment. It uses an incinerator to heat and dry the dehydrated sludge, and then uses high temperature to oxidize the organic matter in the sludge to turn the sludge into a small amount of ash. The remaining ash after incineration can be reused as a resource. Sludge incineration usually involves placing the sludge in a sludge incinerator for incineration. The sludge incinerator will emit a large amount of gas during incineration. In order to reduce the pollution of the exhaust gas to the environment, the exhaust gas needs to be monitored by a volatile organic compound monitoring device so that the exhaust gas can be treated according to the monitoring data.

[0003] Traditional volatile organic compound monitoring devices usually draw gas into the interior through internal equipment, then detect it through the internal detection structure, and then discharge it for treatment. Although this method can monitor the volatile organic compounds in the gas, there will inevitably be some impurities such as particulate matter in the gas generated by the sludge incinerator. These impurities such as particulate matter enter the volatile organic compound monitoring device with the gas, which is not only easy to damage the internal detection structure, but also easy to cause blockage inside the volatile organic compound monitoring device, resulting in a shorter overall service life of the volatile organic compound monitoring device. To this end, we propose a volatile organic compound monitoring device and method for a sludge incinerator. Summary of the invention

[0004] The object of the present invention is to provide a volatile organic compound monitoring device and method for a sludge incinerator to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a volatile organic matter monitoring device for a sludge incinerator, comprising a shell, on which an organic matter gas monitor is arranged, a partition plate 1 for dividing the inner cavity of the shell into a flow cavity 1 and a flow cavity 2 from top to bottom in sequence is arranged horizontally in the inner cavity of the shell, a partition plate 2 for dividing the inner cavity of the flow cavity 2 into a cleaning cavity and an assembly cavity from left to right in sequence is arranged vertically in the flow cavity 2, a rotating filter element adapted to the inner cavity of the shell is arranged in the partition plate 1, one end of the flow cavity 1 is connected to the sludge incinerator through an air intake connecting pipe The exhaust end of the circulation chamber 1 is connected, the other end of the circulation chamber 1 is connected to the induced draft device through the air intake duct, the induced draft device is arranged in the cleaning chamber, an exhaust port penetrating the side wall of the shell is opened in the assembly chamber, the organic gas monitor is connected with a probe, and the probe extends into the circulation chamber 1 and is located between the rotating filter element and the input end of the air intake duct, an impeller element driven to rotate by gas is rotatably arranged in the assembly chamber, the impeller element and the rotating filter element are connected by a transmission component for driving the rotating filter element to rotate, and the rotating filter element is used for self-cleaning during rotation.

[0006] A further improvement is that the rotating filter element includes a fixed outer ring fixed to the inner cavity of the shell, an inner ring rotatably arranged on the inner side of the fixed outer ring, and a filter screen arranged on the inner side of the inner ring, the partition plate 1 is provided with a movable opening adapted to the fixed outer ring, the filter screen is rotatably connected to the inner wall of the movable opening through a rotating shaft at the center of the circle, the inner ring is evenly provided with teeth in an annular array on the side facing the impeller element that cooperate with the transmission component, and the bottom of the fixed outer ring away from the partition plate 2 is connected to a cleaning brush for cleaning the outer wall of the filter screen.

[0007] A further improvement is that the transmission component includes a driving gear sleeved on the outer wall of the impeller shaft of the impeller member and a driven gear meshed with the driving gear at one end and meshed with the teeth at the other end, and the driven gear is rotatably arranged on the second partition plate.

[0008] A further improvement is that the impeller member is provided with a plurality of knocking components for knocking the filter screen;

[0009] The knocking assembly includes an annular member sleeved on the outer wall of the impeller shaft, the circumferential outer wall of the annular member is integrated with a plurality of groups of round-head protrusions 1, a connecting rod is horizontally provided on one side of the annular member, one end of the connecting rod movably passes through a partition plate 2 and is connected to a knocking ball for contacting the filter screen, the outer wall of the connecting rod is provided with a round-head protrusion 2, which is used to drive the connecting rod to move away from the filter screen when the annular member rotates, and the outer wall of the connecting rod is provided with a spring, which is used to drive the connecting rod to drive the knocking ball to knock on the filter screen when the round-head protrusion 1 and the round-head protrusion 2 are separated.

[0010] A further improvement is that both sides of the probe are vertically provided with heat-conducting porous plates adapted to the flow chamber 1, and a spiral condenser is provided between the two groups of the heat-conducting porous plates. The spiral condenser is movably sleeved on the outside of the probe, one end of the spiral condenser is connected to the top of one side of the liquid storage tank through a pipe 1, and the other end of the spiral condenser is connected to the bottom of one side of the liquid storage tank through a pipe 2. Liquid is stored in the liquid storage tank, and the liquid storage tank is arranged at the bottom of the shell;

[0011] One end of the impeller shaft of the impeller member passes through the shell, the liquid storage tank and extends into the screen frame. The screen frame is fixed to the inner wall of the liquid storage tank and is located above the liquid water level in the liquid storage tank. An induced draft fan blade is provided at one end of the impeller shaft located in the screen frame. A ventilation pipe connected to the screen frame is provided on one side of the liquid storage tank.

[0012] A further improvement is that a drain pipe is provided at the bottom of one side of the liquid storage tank, and a valve body is provided in the drain pipe.

[0013] A further improvement is that a debris discharge port is provided at the bottom of the cleaning chamber and located on a side of the rotating filter element away from the second partition plate.

[0014] A method for monitoring volatile organic matter in a sludge incinerator, using the above-mentioned organic matter monitoring device, comprises the following steps:

[0015] S1: Connect the air intake connecting pipe to the exhaust end of the sludge incinerator, turn on the induced draft device, and the induced draft device allows the gas discharged from the exhaust end of the sludge incinerator to enter the circulation chamber 1 through the air intake connecting pipe. The gas is filtered by the rotating filter element and then contacts the probe of the organic gas monitor to obtain volatile organic matter data. Then, the gas is discharged to the assembly chamber through the induced draft device and then discharged from the exhaust port;

[0016] S2: The impeller element is driven by the gas discharged from the induced draft device to drive the rotary filter element to rotate through the transmission component, and the rotary filter element is self-cleaning during rotation.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention is provided with a rotating filter element to filter the gas in contact with the probe, so as to prevent large particles of impurities in the gas from damaging the probe and also prevent blockage inside the shell. At the same time, the impeller element drives the rotating filter element to rotate through the transmission component under the drive of the gas, so that the rotating filter element can self-clean during rotation, thus preventing the rotating filter element from being blocked and affecting the gas entry, thereby ensuring normal and stable gas filtering and monitoring work and improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the rotary filter element in the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the impeller in the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the knocking component in the present invention.

[0023] In the figure: 1. Shell; 2. Partition plate 1; 3. Circulation chamber 1; 4. Rotatable filter element; 41. Fixed outer ring; 42. Inner ring; 43. Filter screen; 44. Cleaning brush; 5. Partition plate 2; 6. Cleaning chamber; 7. Assembly chamber; 8. Exhaust port; 9. Organic gas monitor; 10. Probe; 11. Impeller; 12. Driving gear; 13. Air induced draft device; 14. Exhaust port; 15. Knocking assembly; 151. Ring element; 152. Round head protrusion 1; 153. Connecting rod; 154. Round head protrusion 2; 155. Spring; 156. Knocking ball; 16. Thermally conductive porous plate; 17. Spiral condenser; 18. Liquid storage tank; 19. Frame; 20. Fan blades; 21. Drain pipe; 22. Intake connecting pipe. DETAILED DESCRIPTION

[0024] 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.

[0025] Example 1

[0026] Please see attached Figure 1 -Attached Figure 3

[0027] A volatile organic matter monitoring device for a sludge incinerator comprises a housing 1, on which an organic matter gas monitor 9 is provided. The organic matter gas monitor 9 belongs to the prior art, such as the H11364 detector disclosed in a volatile organic matter monitoring device proposed in publication number CN220454985U, which will not be described in detail here;

[0028] The inner cavity of the shell 1 is horizontally provided with a partition plate 2 for dividing the inner cavity of the shell 1 into a flow cavity 1 3 and a flow cavity 2 from top to bottom. The shell 1 is in the shape of a hollow cylinder, and the partition plate 2 is fixed in the middle of the inner cavity of the shell 1.

[0029] A partition plate 2 5 is vertically provided in the circulation chamber 2 for dividing the inner cavity of the circulation chamber 2 into a cleaning chamber 6 and an assembly chamber 7 from left to right in sequence;

[0030] A rotating filter element 4 adapted to the inner cavity of the housing 1 is provided in the partition plate 12, a part of the rotating filter element 4 is located in the circulation cavity 13, and another part is located in the cleaning cavity 6. The gas entering the circulation cavity 13 is filtered by the part of the rotating filter element 4 located in the circulation cavity 13 to prevent the probe 10 from being damaged or the pipeline from being blocked due to large particles of impurities mixed in the gas. As the rotating filter element 4 rotates, the part filtered by the rotating filter element 4 can be transferred to the cleaning cavity 6 for cleaning.

[0031] One end of the circulation chamber 3 is connected to the exhaust end of the sludge incinerator through an air intake connecting pipe 22, and the other end of the circulation chamber 3 is connected to the induced draft device 13 through an air intake pipe. The induced draft device 13 is arranged in the cleaning chamber 6. An exhaust port 8 penetrating the side wall of the shell 1 is provided in the assembly chamber 7. The exhaust port 8 can be connected to an external gas processing device through a pipeline. The gas can enter the circulation chamber 3 and then enter the assembly chamber 7 through the induced draft device 13, and a certain pressure is given to the flowing gas.

[0032] The organic gas monitor 9 is connected to a probe 10, and the probe 10 extends into the flow chamber 3 and is located between the rotating filter element 4 and the input end of the intake pipe. An impeller 11 driven by gas is provided in the assembly chamber 7. Please refer to the attached Figure 4 For example, it includes an impeller shaft and a plurality of groups of empty cups arranged on the outer circumferential wall of the impeller shaft. The impeller member 11 rotates under the driving of the gas discharged from the output end of the induced draft device 13. The impeller member 11 and the rotary filter element 4 are connected by a transmission component for driving the rotary filter element 4 to rotate. The rotary filter element 4 is used for self-cleaning during rotation to prevent the rotary filter element 4 from being blocked and affecting the air intake.

[0033] Preferably, the rotary filter element 4 of this embodiment includes a fixed outer ring 41 fixed to the inner cavity of the shell 1, an inner ring 42 rotatably arranged on the inner side of the fixed outer ring 41, and a filter screen 43 arranged on the inner side of the inner ring 42. The inner ring 42 and the fixed outer ring 41 can be connected by a bearing so that the filter screen 43 and the inner ring 42 can rotate relative to the fixed outer ring 41. A movable opening adapted to the fixed outer ring 41 is provided on the partition plate 2. The filter screen 43 is rotatably connected to the inner wall of the movable opening through a rotating shaft at the center of the circle. Specifically, the filter screen 43 is fixed to the outer wall of the rotating shaft, and the end of the rotating shaft is rotatably connected to the inner wall of the movable opening. A sealing strip can be provided on the inner wall of the movable opening to improve the connection. In order to improve the sealing performance, the inner ring 42 is evenly provided with teeth in an annular array on the side facing the impeller 11 that cooperate with the transmission parts. The bottom of the fixed outer ring 41 away from the partition plate 25 is connected to a cleaning brush 44 for cleaning the outer wall of the filter screen 43. When the inner ring 42 rotates, it drives the filter screen 43 to rub the cleaning brush 44, so that impurities on the filter screen 43 after clogging are separated from the filter screen 43. At the same time, since the cleaning brush 44 is located in the cleaning chamber 6, the cleaned impurities remain in the cleaning chamber 6. The bottom of the cleaning chamber 6 and the side of the rotating filter element 4 away from the partition plate 25 are provided with a discharge port 14 to discharge impurities in the cleaning chamber 6.

[0034] As a preferred embodiment, the transmission component of this embodiment includes a driving gear 12 sleeved on the outer wall of the impeller shaft of the impeller member 11 and a driven gear meshed with the driving gear 12 at one end and meshed with the teeth at the other end, and the driven gear is rotatably arranged on the partition plate 2 5. When the impeller member 11 rotates, its impeller shaft also rotates, the impeller shaft drives the driving gear 12, the driving gear 12 drives the driven gear, and the driven gear drives the inner ring 42 to rotate through the teeth.

[0035] Please see attached Figure 4

[0036] Preferably, the impeller 11 of this embodiment is provided with a plurality of knocking components 15 for knocking the filter screen 43;

[0037] The knocking assembly 15 includes an annular member 151 sleeved on the outer wall of the impeller shaft. As the impeller shaft rotates, the circumferential outer wall of the annular member 151 is integrated with a plurality of groups of round-head protrusions 152. A connecting rod 153 is horizontally provided on one side of the annular member 151. One end of the connecting rod 153 movably passes through the partition plate 25 and is connected to a knocking ball 156 for contacting the filter screen 43. A round-head protrusion 154 is provided on the outer wall of the connecting rod 153, which is used to drive the connecting rod 153 to move away from the filter screen 43 when the annular member 151 rotates. A spring 155 is provided on the outer wall of the connecting rod 153, which is used to drive the connecting rod 153 to drive the knocking ball 156 to knock on the filter screen 43 when the round-head protrusion 152 and the round-head protrusion 2 154 are separated. One end of the spring 155 is connected to the outer wall of the connecting rod 153, and the other end is connected to the outer wall of the partition plate 25. By intermittently knocking the filter screen 43 with the knocking component 15 , the filter screen 43 can be vibrated, thereby improving the self-cleaning quality of the filter screen 43 .

[0038] Considering that the gas discharged from the sludge incinerator has a certain temperature, in order to avoid damage to the probe caused by high temperature, as a preferred embodiment, both sides of the probe 10 of this embodiment are vertically provided with heat-conducting porous plates 16 adapted to the flow cavity 13 at intervals. The heat-conducting porous plates 16 are made of heat-conducting materials, such as copper and aluminum. On the one hand, the gas can evenly contact the probe 10, and on the other hand, part of the heat in the gas can be extracted, so that the heat of the gas contacting the probe 10 is not too high;

[0039] A spiral condenser 17 is provided between the two groups of heat-conducting porous plates 16. The spiral condenser 17 is movably sleeved on the outside of the probe 10. When the gas contacts the probe 10, it also passes through the spiral condenser 17, and the liquid flowing in the spiral condenser 17 further cools the gas. At the same time, the spiral condenser 17 also absorbs the heat derived from the heat-conducting porous plates 16. One end of the spiral condenser 17 is connected to the top of one side of the liquid storage tank 18 through a pipe 1, and the other end of the spiral condenser 17 is connected to the bottom of one side of the liquid storage tank 18 through a pipe 2. Liquid is stored in the liquid storage tank 18, and the water level of the liquid is located below the end of the pipe 1 connected to the liquid storage tank 18. The liquid storage tank 18 is provided at the bottom of the shell 1, and a drain pipe 21 is provided at the bottom of one side of the liquid storage tank 18, and a valve body is provided in the drain pipe 21, so that the liquid in the liquid storage tank 18 can be used to add liquid to the liquid storage tank 18;

[0040] One end of the impeller shaft of the impeller member 11 penetrates the housing 1, the liquid storage tank 18 and extends into the mesh frame 19. The mesh frame 19 is fixed to the inner wall of the liquid storage tank 18 and is located above the liquid level in the liquid storage tank 18. An induced draft fan blade 20 is provided at one end of the impeller shaft located in the mesh frame 19. A ventilation pipe connected to the mesh frame 19 is provided on one side of the liquid storage tank 18. Through this arrangement, when the impeller shaft rotates, the induced draft fan blade 20 is also driven, so that the air in the liquid storage tank 18 is discharged from the exhaust pipe, so that a vacuum is formed in the liquid storage tank 18, and then the water in the liquid storage tank 18 flows through the second pipe to the spiral condenser 17 and then enters the first pipe, and is discharged to the liquid storage tank 18 again through the first pipe. In this way, on the one hand, the gas is cooled by the liquid flowing in the spiral condenser 17, and on the other hand, the heat of the gas is collected and utilized, reducing energy waste.

[0041] A method for monitoring volatile organic matter in a sludge incinerator, using the above-mentioned organic matter monitoring device, comprises the following steps:

[0042] S1: Connect the air intake connecting pipe 22 to the exhaust end of the sludge incinerator, turn on the induced draft device 13, and the induced draft device 13 allows the gas discharged from the exhaust end of the sludge incinerator to enter the circulation cavity 1 3 through the air intake connecting pipe 22. The gas is filtered by the rotating filter element 4 and then contacts the probe 10 of the organic gas monitor 9 to obtain volatile organic matter data. Then, the gas is discharged to the assembly cavity 7 through the induced draft device 13 and then discharged from the exhaust port 8;

[0043] S2: The impeller 11 is driven by the gas discharged from the induced draft device 13 to drive the rotary filter element 4 to rotate through the transmission component, and the rotary filter element 4 performs self-cleaning during rotation.

[0044] 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 volatile organic matter monitoring device for a sludge incinerator, comprising a housing (1), on which an organic gas monitor (9) is arranged, characterized in that: The inner cavity of the shell (1) is horizontally provided with a partition plate one (2) for dividing the inner cavity of the shell (1) from top to bottom into a circulation cavity one (3) and a circulation cavity two in sequence; the circulation cavity two is vertically provided with a partition plate two (5) for dividing the inner cavity of the circulation cavity two from left to right into a cleaning cavity (6) and an assembly cavity (7) in sequence; the partition plate one (2) is provided with a rotating filter element (4) adapted to the inner cavity of the shell (1); one end of the circulation cavity one (3) is connected to the exhaust end of the sludge incinerator through an air intake connecting pipe (22); the other end of the circulation cavity one (3) is connected to the induced draft device (13) through an air intake duct; the induced draft device (13) is connected to the induced draft device (13) through an air intake duct; the induced draft device (13) is connected to the induced draft device (13) through an air intake duct. The device (13) is arranged in a cleaning chamber (6), the assembly chamber (7) is provided with an exhaust port (8) penetrating the side wall of the housing (1), the organic gas monitor (9) is connected with a probe (10), and the probe (10) extends into the circulation chamber (3) and is located between the rotating filter element (4) and the input end of the intake pipe, the assembly chamber (7) is provided with an impeller element (11) driven to rotate by gas, the impeller element (11) and the rotating filter element (4) are connected to each other through a transmission component, and are used to drive the rotating filter element (4) to rotate, and the rotating filter element (4) is used to perform self-cleaning when rotating; The rotating filter element (4) comprises a fixed outer ring (41) fixed to the inner cavity of the housing (1), an inner ring (42) rotatably arranged inside the fixed outer ring (41), and a filter screen (43) arranged inside the inner ring (42); a movable opening adapted to fit the fixed outer ring (41) is provided on the first partition plate (2); the filter screen (43) is rotatably connected to the inner wall of the movable opening via a rotating shaft at the center of the circle; teeth cooperating with the transmission component are uniformly arranged in an annular array on the side of the inner ring (42) facing the impeller element (11); a cleaning brush (44) for cleaning the outer wall of the filter screen (43) is connected to the bottom of the side of the fixed outer ring (41) away from the second partition plate (5); The transmission component comprises a driving gear (12) sleeved on the outer wall of the impeller shaft of the impeller member (11) and a driven gear meshing with the driving gear (12) at one end and meshing with the teeth at the other end, wherein the driven gear is rotatably mounted on the second partition plate (5); The impeller member (11) is provided with a plurality of knocking components (15) for knocking the filter screen (43); The knocking assembly (15) comprises an annular member (151) sleeved on the outer wall of the impeller shaft, the circumferential outer wall of the annular member (151) is integrally provided with a plurality of groups of round head protrusions (152), one side of the annular member (151) is horizontally provided with a connecting rod (153), one end of the connecting rod (153) movably passes through the partition plate (5) and is connected to a knocking ball (156) for contacting the filter screen (43), the connecting rod (15 3) is provided with a second round-head protrusion (154) on its outer wall, which is used to drive the connecting rod (153) to move in a direction away from the filter screen (43) when the annular member (151) rotates, and the connecting rod (153) is provided with a spring (155) on its outer wall, which is used to drive the connecting rod (153) to drive the knocking ball (156) to knock the filter screen (43) when the first round-head protrusion (152) and the second round-head protrusion (154) are separated; Thermally conductive porous plates (16) adapted to the flow chamber (3) are vertically arranged at intervals on both sides of the probe (10); a spiral condenser (17) is arranged between two groups of the thermally conductive porous plates (16); the spiral condenser (17) is movably sleeved on the outside of the probe (10); one end of the spiral condenser (17) is connected to the top of one side of a liquid storage tank (18) through a pipe (1); the other end of the spiral condenser (17) is connected to the bottom of one side of the liquid storage tank (18) through a pipe (2); liquid is stored in the liquid storage tank (18); the liquid storage tank (18) is arranged at the bottom of the housing (1); A debris discharge port (14) is provided at the bottom of the cleaning chamber (6) and located on a side of the rotating filter element (4) away from the second partition plate (5); The impeller (11) is driven to rotate by the gas discharged from the output end of the induced draft device (13). The impeller (11) drives the inner ring (42) in the rotating filter element (4) through the transmission component. When the inner ring (42) rotates, it drives the filter screen (43) to rub against the cleaning brush (44), so that impurities on the filter screen (43) after clogging are separated from the filter screen (43) and remain in the cleaning chamber (6). As the impeller shaft in the impeller (11) rotates, the round head protrusion (152) drives the connecting rod (153) to move away from the filter screen (43). 43), and when the round-head protrusion 1 (152) and the round-head protrusion 2 (154) are separated, the spring (155) drives the connecting rod (153) to drive the knocking ball (156) to knock the filter screen (43), so that the filter screen (43) vibrates, and the water in the liquid storage tank (18) flows through the pipe 2 to the spiral condenser (17) and then enters the pipe 1, and is discharged to the liquid storage tank (18) through the pipe 1. On the one hand, the gas is cooled by the flow of liquid in the spiral condenser (17), and on the other hand, the heat of the gas is collected and utilized.

2. The organic matter monitoring device according to claim 1, characterized in that: A drainage pipe (21) is provided at the bottom of one side of the liquid storage tank (18), and a valve body is provided in the drainage pipe (21).

3. A method for monitoring volatile organic matter in a sludge incinerator, using the organic matter monitoring device according to any one of claims 1 to 2, characterized in that: The following steps are involved: S1: Connecting the air intake connecting pipe (22) to the exhaust end of the sludge incinerator, turning on the induced draft device (13), the induced draft device (13) allows the gas exhausted from the exhaust end of the sludge incinerator to enter the circulation chamber 1 (3) through the air intake connecting pipe (22), the gas is filtered by the rotating filter element (4) and then contacts the probe (10) of the organic gas monitor (9) to obtain volatile organic matter data, and then the gas is discharged to the assembly chamber (7) through the induced draft device (13), and then discharged from the exhaust port (8); S2: The impeller (11) is driven by the gas discharged from the induced draft device (13) to drive the rotary filter element (4) to rotate through the transmission component, and the rotary filter element (4) performs self-cleaning during rotation.

Images