A sludge pyrolysis carbonization system

Abstract

A sludge pyrolysis and carbonization system of the present invention comprises a reactor, an exhaust pipe, an exhaust control valve, a sampling pipeline, a sampling control valve and a sampling mechanism, wherein the sampling mechanism comprises a mobile platform, a mobile driving mechanism, a main control unit, a light emitter and a light flux sensor. The sludge is subjected to high-temperature pyrolysis and carbonization in the reactor, and the waste gas generated in the carbonization process can be discharged from the exhaust pipe. A plurality of sampling pipelines are arranged on the outer wall of the exhaust pipe, and the waste gas can be transported outward through the sampling pipelines for sampling. The light emitting tube and the light flux sensor are arranged relatively in the sampling pipeline, and light-transmitting plates are arranged at the emitting and receiving ends of the light emitting tube and the light flux sensor. When the waste gas is transported in the sampling pipeline, it will adhere to the light-transmitting plate. The use status of the sampling pipeline can be judged by detecting the light flux. According to the different use status of the sampling pipeline, the mobile platform can be driven to move to ensure that the use status of the sampling pipeline is consistent, so as to facilitate simultaneous cleaning and reduce costs.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, and in particular to a sludge pyrolysis carbonization system. Background Art

[0002] The commonly used sludge treatment method is pyrolysis carbonization. The sludge with a moisture content of 80% is first mechanically dehydrated, and then the sludge is heated in a pyrolysis carbonization reactor in the absence of oxygen. When the reactor reaches a certain temperature, the organic matter in the sludge is decomposed into three products: non-condensable combustible gas, carbon slag and a small amount of tar. The pouring oil and non-condensable gas can be used for incineration and equipment gas supplement. The produced carbon slag has a certain calorific value and activity, which can meet the technical requirements of coal gangue, thereby providing a stable raw material for firing environmentally friendly bricks. When the reactor is pyrolysis carbonization, in addition to producing non-condensable combustible gas, it also produces some volatile organic compounds, sulfides and nitrides, halogenated hydrocarbons and heavy metal vapors. In order to avoid the emission of gas pollution. In order to pollute the atmospheric environment, the outlet pipe of the reactor is generally connected to the exhaust gas treatment equipment. At the same time, in order to understand the reaction conditions inside the reactor, the discharged exhaust gas needs to be collected. The reaction conditions of the reactor can be judged according to the types of gases in the collected exhaust gas, so that timely adjustments can be made. The outlet pipe of the current reactor is equipped with multiple collection ports. When collecting exhaust gas samples, it is necessary to collect them from the collection ports. However, the selection of the collection ports is relatively random. During long-term use, the inner walls of some collection ports will adhere to the exhaust gas. If they are not cleaned in time, it may affect the detection of the exhaust gas types. Since the use of the collection ports is basically random, if only a single collection port is cleaned each time, it will take a lot of time and the cleaning cost is high. Summary of the invention

[0003] In view of this, the present invention proposes a sludge pyrolysis carbonization system, which can intelligently schedule the sampling pipeline of the reactor exhaust pipe to keep the dirtiness of the sampling pipeline consistent for simultaneous cleaning and ensure that the collected exhaust gas samples do not contain excessive impurities.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A sludge pyrolysis carbonization system comprises a reactor, an exhaust pipe, an exhaust control valve, a sampling pipeline, a sampling control valve and a sampling mechanism, wherein the exhaust pipe is arranged at the top of the reactor, and a plurality of sampling ports are arranged on the outer wall of the exhaust pipe, one end of the sampling pipeline extends into the exhaust pipe through the sampling port, the exhaust control valve is arranged on the exhaust pipe, and the sampling control valve is arranged on the sampling pipeline; the sampling mechanism comprises a mobile platform, a mobile drive mechanism, a main control unit, a light emitter and a light flux sensor, the mobile platform is arranged at the top of the reactor and located at the periphery of the exhaust pipe, the mobile drive mechanism is used to drive the mobile platform to move, the inner top surface and the inner bottom surface of the sampling pipeline are relatively provided with mounting grooves, a light-transmitting plate is arranged on the side of the mounting groove facing the inside of the sampling pipeline, the light emitter and the light flux sensor are arranged in different mounting grooves and are arranged relatively, the main control unit is arranged on the mobile platform, and is respectively connected with the mobile drive mechanism, the sampling control valve, the light emitter and the light flux sensor for data, and the main control unit drives the mobile platform to move to the outside of different sampling pipelines through the mobile drive mechanism according to the difference in light flux collected by the light flux sensors in different sampling pipelines.

[0006] Preferably, the mobile platform includes an arc-shaped plate, a driving wheel, a horizontal plate and a guardrail. An annular groove is provided on the top of the reactor. The top of the arc-shaped plate is connected to the bottom surface of the horizontal plate. The driving wheel is arranged at the bottom end of the arc-shaped plate and is located in the annular groove. The guardrail is arranged on the top surface of the horizontal plate. The mobile driving mechanism is arranged in a ring array on the top surface of the reactor, which includes a rotating motor and a gear. The rotating motor is arranged on the top surface of the reactor, and its output shaft is connected to the gear. A rack is provided on the side wall of the arc-shaped plate. The rack is arranged circumferentially along the side wall of the arc-shaped plate and meshes with the gear. The main control unit is data-connected with the rotating motor.

[0007] Preferably, it also includes a stirring mechanism, which includes a stirring motor, a rotating shaft and stirring blades. The stirring motor is arranged on the bottom surface of the reactor, and its output shaft is connected to the bottom end of the rotating shaft. The stirring blades are arranged on the outer wall of the rotating shaft.

[0008] Preferably, the stirring mechanism further comprises a partition, the partition is arranged in the reaction kettle, the stirring motor is located below the partition, the bottom end of the rotating shaft passes through the partition, and the stirring blade is located above the partition.

[0009] Preferably, it also includes a feeding and discharging mechanism, which includes a feeding pipe and a discharging door, the feeding pipe and the discharging door are arranged on the outer wall of the reaction kettle, and the bottom surface height of the discharging door is greater than the top surface height of the partition.

[0010] Preferably, the sampling mechanism also includes a storage tank, a gas pipeline, a spiral condenser and a support platform, the support platform and the storage tank are arranged on a horizontal plate, one end of the gas pipeline is connected to the storage tank, and the other end is used to dock with the sampling pipeline, the spiral condenser is wrapped around the outside of the gas pipeline, and its bottom end is in contact with the top surface of the support platform.

[0011] Preferably, the gas pipeline includes a vertical pipe, a horizontal pipe, a telescopic pipe, a butt joint pipe, a force plate and an electric push rod. The bottom end of the vertical pipe is connected to the top of the storage tank, and the top end is connected to one end of the horizontal pipe. The horizontal pipe, the telescopic pipe and the butt joint pipe are connected in sequence. The sampling pipe is located on one side of the rotation path of the butt joint pipe. The spiral condenser is wrapped around the outside of the horizontal pipe. The force plate is arranged on the outer wall of the butt joint pipe. The electric push rod is arranged on the side wall of the support platform. The output shaft thereof is connected to the side wall of the force plate. The main control unit is data-connected to the electric push rod.

[0012] Preferably, the sampling mechanism also includes a transmitting tube and a receiving tube, the transmitting tube is arranged on the bottom surface of the sampling pipe, and the receiving tube is arranged on the side wall of the force-bearing plate away from the electric push rod, the transmitting tube is located on one side of the rotation path of the receiving tube, and the infrared light frequencies emitted by the transmitting tubes on the bottom surfaces of different sampling pipes are different, and the main control unit is respectively connected to the transmitting tube and the receiving tube data.

[0013] Preferably, the outer wall diameter of the butt joint tube is smaller than the inner wall diameter of the sampling pipe, and the gas pipeline also includes an annular airbag, an air pump and an air pump, the annular airbag and the air pump are arranged on the outer wall of the butt joint tube, the air pump is connected to the annular airbag and the air pump by the air pump pipe, and the main control unit is data connected to the air pump.

[0014] Preferably, the gas pipeline further includes a deflation pipe and an air valve, the deflation pipe is connected to the inflation pipe, the air valve is arranged on the deflation pipe, and the main control unit is data-connected to the air valve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] ① The sludge can be pyrolyzed and carbonized in the reactor. The high-temperature exhaust gas generated by pyrolysis and carbonization will be transported from the exhaust pipe to the exhaust gas treatment facility. Several sampling pipes are set on the outer wall of the exhaust pipe. The waste can be sampled through the sampling pipes. The current pyrolysis and carbonization status can be understood by analyzing the gas types of the exhaust gas, so as to adjust the pyrolysis and carbonization parameters;

[0017] ② In each sampling pipeline, light emitters and light flux sensors are symmetrically arranged. Both light emitters and light flux sensors are arranged on the inner side of the light-transmitting plate. When the exhaust gas enters the sampling pipeline, part of the exhaust gas will adhere to the light-transmitting plate. The degree of dirtiness of the sampling pipeline can be judged by detecting the light flux. Before sampling, the mobile platform can be moved to the side of the sampling pipeline with less dirtiness to keep the degree of dirtiness of the sampling pipeline consistent, so as to facilitate simultaneous cleaning and reduce cleaning costs;

[0018] ③Since the use of sampling pipelines can be scheduled, the collected exhaust gas will not pass through the sampling pipelines with severe adhesion, ensuring the accuracy of the exhaust gas detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of a sludge pyrolysis carbonization system of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of a sampling mechanism and an exhaust pipe of a sludge pyrolysis carbonization system of the present invention;

[0022] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0023] Figure 4 It is a structural schematic diagram of a storage tank and a sampling pipeline of a sludge pyrolysis carbonization system of the present invention;

[0024] Figure 5 A schematic diagram of the internal structure of a sampling pipeline of a sludge pyrolysis carbonization system of the present invention;

[0025] In the figure, 1 is a reactor, 2 is an exhaust pipe, 3 is an exhaust control valve, 4 is a sampling pipeline, 5 is a sampling control valve, 6 is a sampling port, 7 is a mobile platform, 8 is a main control unit, 9 is a light emitter, 10 is a light flux sensor, 11 is a mounting groove, 12 is a light-transmitting plate, 13 is an arc plate, 14 is a moving wheel, 15 is a horizontal plate, 16 is a guardrail, 17 is an annular groove, 18 is a rotating motor, 19 is a gear, 20 is a rack, and 21 is a stirring motor , 22 is a rotating shaft, 23 is a stirring blade, 24 is a partition, 25 is a feed pipe, 26 is a discharge door, 27 is a storage tank, 28 is a spiral condenser, 29 is a support platform, 30 is a vertical pipe, 31 is a horizontal pipe, 32 is a telescopic pipe, 33 is a docking pipe, 34 is a force plate, 35 is an electric push rod, 36 is a launching tube, 37 is a receiving tube, 38 is an annular airbag, 39 is an air pump, 40 is an air pump, 41 is an air release pipe, and 42 is an air valve. DETAILED DESCRIPTION

[0026] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0027] See also Figures 1 to 5 The present invention provides a sludge pyrolysis carbonization system, comprising a reactor 1, an exhaust pipe 2, an exhaust control valve 3, a sampling pipeline 4, a sampling control valve 5 and a sampling mechanism, wherein the exhaust pipe 2 is arranged at the top of the reactor 1, and a plurality of sampling ports 6 are arranged on the outer wall thereof, and one end of the sampling pipeline 4 extends into the exhaust pipe 2 through the sampling port 6, the exhaust control valve 3 is arranged on the exhaust pipe 2, and the sampling control valve 5 is arranged on the sampling pipeline 4; the sampling mechanism comprises a mobile platform 7, a mobile drive mechanism, a main control unit 8, a light emitter 9 and a light flux sensor 10, wherein the mobile platform 7 is arranged at the top of the reactor 1 and is located outside the exhaust pipe 2, and the mobile drive mechanism Used to drive the mobile platform 7 to move, the top surface and the bottom surface of the sampling pipe 4 are relatively provided with installation grooves 11, and the side of the installation groove 11 facing the inside of the sampling pipe 4 is provided with a light-transmitting plate 12, the light emitter 9 and the light flux sensor 10 are arranged in different installation grooves 11, and are arranged relatively, the main control unit 8 is arranged on the mobile platform 7, and is respectively connected with the mobile driving mechanism, the sampling control valve 5, the light emitter 9 and the light flux sensor 10 for data, and the main control unit 8 drives the mobile platform 7 to move to the outside of different sampling pipes 4 through the mobile driving mechanism according to the difference in light flux collected by the light flux sensors 10 in different sampling pipes 4.

[0028] The sludge to be treated is added to the reactor 1, and the reactor 1 can heat its interior to evaporate the water contained in the sludge, and decompose the organic matter to achieve the carbonization of the sludge. In the process of pyrolysis and carbonization, the waste gas generated will be discharged from the exhaust pipe 2. The exhaust gas can be transported outward by controlling the switch of the exhaust control valve 3. The exhaust pipe 2 is connected to the subsequent waste gas treatment facility, and the waste gas treatment facility treats the waste gas to avoid direct discharge into the air to cause air pollution. Several sampling ports 6 are also set on the exhaust pipe 2. The sampling ports 6 are all embedded with sampling pipes 4. The sampling control valve 5 on the sampling pipe 4 can be switched. Under normal time, the sampling control valve 5 is closed, and the staff can open the sampling control valve 5 to sample the waste gas from the sampling pipe 4. The sampled waste gas can be used for gas analysis, so as to learn the current sludge treatment progress. If the type of waste gas is abnormal, the reaction parameters of the reactor 1 can be changed in time to ensure the normal sludge pyrolysis and carbonization.

[0029] A sampling pipe 4 is provided through each sampling port 6, and exhaust gas can be sampled through the sampling pipes 4 at different positions. After the staff is on the mobile platform 7, the sampling control valve 5 can be opened, and the exhaust gas can be collected from the sampling pipe 4 through the sampling equipment carried. When the exhaust gas enters the sampling pipe 4 for a long time, it will adhere to the inner wall of the sampling pipe 4. In order to avoid errors in the detection results, the inside of the sampling pipe 4 needs to be cleaned after a certain period of time. The staff needs to climb to the top of the reactor 1 for cleaning. Since there are multiple sampling pipes 4, if a single sampling pipe 4 is cleaned each time, it will take a lot of time and the cleaning cost is high. Therefore, it is best to clean all the sampling pipes 4 at one time. For this reason, the present invention A light emitter 9 and a light flux sensor 10 are respectively installed in the installation grooves 11 arranged opposite to each other in the upper and lower parts of the sampling pipe 4. The light will be transported through the light-transmitting plate 12, and the exhaust gas will adhere to the light-transmitting plate 12 during the transportation inside the sampling pipe 4. The light emitted by the light emitter 9 can be received by the light flux sensor 10. The light flux sensor 10 can collect the size of the light flux and transmit the light flux to the main control unit 8. The main control unit 8 determines the adhesion condition of the inner wall of the sampling pipe 4 according to the size of the light flux, so that the mobile platform 7 can be driven to move by the mobile driving mechanism, and the mobile platform 7 can be moved to the side of different sampling pipes 4 for sampling, thereby realizing the scheduling and use of the sampling pipes 4, thereby adjusting the use status of the sampling pipes 4 to be consistent, so as to facilitate unified cleaning.

[0030] Preferably, the mobile platform 7 includes an arc-shaped plate 13, a driving wheel 14, a horizontal plate 15 and a guardrail 16. An annular groove 17 is provided on the top of the reactor 1. The top of the arc-shaped plate 13 is connected to the bottom surface of the horizontal plate 15. The driving wheel 14 is arranged at the bottom end of the arc-shaped plate 13 and is located in the annular groove 17. The guardrail 16 is arranged on the top surface of the horizontal plate 15. The mobile driving mechanism is arranged in a ring array on the top surface of the reactor 1, which includes a rotating motor 18 and a gear 19. The rotating motor 18 is arranged on the top surface of the reactor 1, and its output shaft is connected to the gear 19. A rack 20 is provided on the side wall of the arc-shaped plate 13. The rack 20 is arranged circumferentially along the side wall of the arc-shaped plate 13 and meshes with the gear 19. The main control unit 8 is data-connected with the rotating motor 18.

[0031] When it is necessary to drive the mobile platform 7 to move to the side of a different sampling pipe 4, the main control unit 8 can control the operation of the rotating motor 18, the rotating motor 18 drives the gear 19 to rotate, and the gear 19 can drive the arc plate 13 to move through the rack 20, and finally the driving wheel 14 will move along the annular groove 17, so that the arc plate 13 and the horizontal plate 15 move to different sides of the sampling pipe 4, so that when the staff climbs up the horizontal plate 15, they can take samples from the corresponding sampling pipe 4. For the rotating motor 18, it is arranged in a circular array. During the movement, the arc plate 13 can move to different sides of the rotating motor 18, so that the rotating motor 18 can continuously drive the arc plate 13 to move through the gear 19.

[0032] Preferably, a stirring mechanism is also included, which includes a stirring motor 21, a rotating shaft 22 and a stirring blade 23. The stirring motor 21 is arranged on the inner bottom surface of the reactor 1, and its output shaft is connected to the bottom end of the rotating shaft 22. The stirring blade 23 is arranged on the outer wall of the rotating shaft 22.

[0033] When the sludge is pyrolyzed and carbonized in the reactor 1, the stirring motor 21 can drive the rotating shaft 22 to rotate, and the rotating shaft 22 can stir the sludge in the reactor 1 through the stirring blades 23 to make the sludge heated evenly.

[0034] Preferably, the stirring mechanism further comprises a partition 24 , the partition 24 is disposed in the reaction kettle 1 , the stirring motor 21 is located below the partition 24 , the bottom end of the rotating shaft 22 passes through the partition 24 , and the stirring blade 23 is located above the partition 24 .

[0035] The partition 24 is used to isolate the stirring motor 21 below, while the stirring and pyrolysis carbonization of the sludge are both achieved above the partition 24 .

[0036] Preferably, a feeding and discharging mechanism is further included, which includes a feeding pipe 25 and a discharging door 26 . The feeding pipe 25 and the discharging door 26 are arranged on the outer wall of the reactor 1 , and the bottom surface height of the discharging door 26 is greater than the top surface height of the partition 24 .

[0037] The feed pipe 25 uses a spiral conveying method to convey the sludge into the reactor 1. After the reaction is completed, the discharge door 26 can be opened to collect the carbon residue left in the reactor 1.

[0038] Preferably, the sampling mechanism also includes a storage tank 27, a gas pipeline, a spiral condenser 28 and a support platform 29. The support platform 29 and the storage tank 27 are arranged on a horizontal plate 15. One end of the gas pipeline is connected to the storage tank 27, and the other end is used to dock with the sampling pipeline 4. The spiral condenser 28 is wrapped around the outside of the gas pipeline, and its bottom end is in contact with the top surface of the support platform 29.

[0039] When it is necessary to sample and analyze the exhaust gas, the staff can drive the gas pipeline to connect with the sampling pipeline 4 on the horizontal plate 15, and then open the sampling control valve 5. The exhaust gas in the exhaust pipe 2 can enter the gas pipeline through the sampling pipeline 4. The temperature of the exhaust gas is relatively high. In order to avoid scalding the staff by the high-temperature exhaust gas, a spiral condenser 28 is provided on the outer wall of the gas pipeline to cool the exhaust gas. The cooled exhaust gas will enter the storage tank 27 for storage to realize the sampling of the exhaust gas.

[0040] Preferably, the gas pipeline includes a vertical pipe 30, a horizontal pipe 31, a telescopic pipe 32, a docking pipe 33, a force plate 34 and an electric push rod 35. The bottom end of the vertical pipe 30 is connected to the top of the storage tank 27, and the top end is connected to one end of the horizontal pipe 31. The horizontal pipe 31, the telescopic pipe 32 and the docking pipe 33 are connected in sequence. The sampling pipe 4 is located on one side of the rotation path of the docking pipe 33. The spiral condenser 28 is wrapped around the outside of the horizontal pipe 31. The force plate 34 is arranged on the outer wall of the docking pipe 33. The electric push rod 35 is arranged on the side wall of the support platform 29, and its output shaft is connected to the side wall of the force plate 34. The main control unit 8 is data-connected to the electric push rod 35.

[0041] When the mobile platform 7 moves to one side of the sampling pipe 4, the docking pipe 33 is aligned with the sampling pipe 4, and then the electric push rod 35 is started. The electric push rod 35 drives the docking pipe 33 to dock with the sampling pipe 4 through the force plate 34, and then the exhaust gas in the sampling pipe 4 passes through the docking pipe 33, the telescopic pipe 32, the horizontal pipe 31 and the vertical pipe 30 in sequence and enters the storage tank 27. In addition, the high-temperature exhaust gas can be cooled by the external spiral condenser 28 when passing through the horizontal pipe 31, and the cooled exhaust gas can be transported to the storage tank 27 for storage.

[0042] Preferably, the sampling mechanism also includes a transmitting tube 36 and a receiving tube 37. The transmitting tube 36 is arranged on the bottom surface of the sampling pipe 4, and the receiving tube 37 is arranged on the side wall of the force-bearing plate 34 away from the electric push rod 35. The transmitting tube 36 is located on one side of the rotation path of the receiving tube 37. The infrared light frequencies emitted by the transmitting tubes 36 on the bottom surfaces of different sampling pipes 4 are different, and the main control unit 8 is data-connected with the transmitting tube 36 and the receiving tube 37 respectively.

[0043] In order to ensure that the docking tube 33 can be aligned with the sampling pipe 4, a transmitting tube 36 is arranged at the bottom of the sampling pipe 4, and a receiving tube 37 is arranged on the side wall of the force-bearing plate 34. When the mobile platform 7 moves, the receiving tube 37 can rotate around the transmitting tube 36. When the receiving tube 37 is opposite to the transmitting tube 36, the infrared light emitted by the transmitting tube 36 can be received. The transmitting tubes 36 at the bottom of different sampling pipes 4 have different emission frequencies. The main control unit 8 can determine on which side of the sampling pipe 4 the docking tube 33 is located according to the infrared light frequency of the transmitting tube 36 received by the receiving tube 37, thereby realizing the positioning of the docking tube 33.

[0044] Preferably, the outer wall diameter of the docking tube 33 is smaller than the inner wall diameter of the sampling pipe 4, and the gas pipeline also includes an annular airbag 38, an air pump 39 and an air pump 40, the annular airbag 38 and the air pump 40 are arranged on the outer wall of the docking tube 33, the air pump 39 connects the annular airbag 38 and the air pump 40, the main control unit 8 is data-connected with the air pump 40, the gas pipeline also includes an air release pipe 41 and an air valve 42, the air release pipe 41 is connected to the air pump 39, the air valve 42 is arranged on the air release pipe 41, and the main control unit 8 is data-connected with the air valve 42.

[0045] When the docking tube 33 is docked with the sampling pipe 4, the electric push rod 35 will push the docking tube 33 to move, so that the docking tube 33 is inserted into the sampling pipe 4, and then the air pump 40 is controlled to start. The air pump 40 delivers external air to the annular airbag 38 through the air pump 39. After the annular airbag 38 is inflated, the gap between the inner wall of the sampling pipe 4 and the outer wall of the docking tube 33 can be sealed to prevent the exhaust gas from overflowing. After the sampling is completed, the air valve 42 can be opened to discharge the air in the annular airbag 38 to the outside through the air pump 39 and the air release pipe 41. After the annular airbag 38 shrinks, the docking tube 33 can be withdrawn from the sampling pipe 4.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sludge pyrolysis carbonization system, characterized in that: The invention comprises a reactor, an exhaust pipe, an exhaust control valve, a sampling pipeline, a sampling control valve and a sampling mechanism. The exhaust pipe is arranged at the top of the reactor, and a plurality of sampling ports are arranged on the outer wall of the exhaust pipe. One end of the sampling pipeline extends into the exhaust pipe through the sampling port. The exhaust control valve is arranged on the exhaust pipe, and the sampling control valve is arranged on the sampling pipeline. The sampling mechanism comprises a mobile platform, a mobile driving mechanism, a main control unit, a light emitter and a light flux sensor. The mobile platform is arranged at the top of the reactor and is located outside the exhaust pipe. The mobile driving mechanism is used to drive the mobile platform to move. The inner top surface and the inner bottom of the sampling pipeline are The surfaces are provided with mounting grooves opposite to each other, and a light-transmitting plate is provided on the side of the mounting groove facing the inside of the sampling pipe. The light emitter and the light flux sensor are arranged in different mounting grooves and are arranged relatively to each other. The main control unit is arranged on the mobile platform and is respectively connected with the mobile driving mechanism, the sampling control valve, the light emitter and the light flux sensor data. The main control unit drives the mobile platform to move to the outside of different sampling pipes through the mobile driving mechanism according to the difference in light flux collected by the light flux sensors in different sampling pipes. The sampling mechanism also includes a transmitting tube and a receiving tube, and the transmitting tube is arranged on the bottom surface of the sampling pipe.

2. A sludge pyrolysis carbonization system according to claim 1, characterized in that: The mobile platform includes an arc-shaped plate, a driving wheel, a horizontal plate and a guardrail. An annular groove is arranged on the top of the reactor. The top of the arc-shaped plate is connected to the bottom surface of the horizontal plate. The driving wheel is arranged at the bottom end of the arc-shaped plate and is located in the annular groove. The guardrail is arranged on the top surface of the horizontal plate. The mobile driving mechanism is arranged in a ring array on the top surface of the reactor. It includes a rotating motor and a gear. The rotating motor is arranged on the top surface of the reactor, and its output shaft is connected to the gear. A rack is arranged on the side wall of the arc-shaped plate. The rack is arranged circumferentially along the side wall of the arc-shaped plate and meshes with the gear. The main control unit is data-connected with the rotating motor.

3. The sludge pyrolysis carbonization system according to claim 1, characterized in that: It also includes a stirring mechanism, which includes a stirring motor, a rotating shaft and stirring blades. The stirring motor is arranged on the bottom surface of the reactor, and its output shaft is connected to the bottom end of the rotating shaft. The stirring blades are arranged on the outer wall of the rotating shaft.

4. A sludge pyrolysis carbonization system according to claim 3, characterized in that: The stirring mechanism further comprises a partition, which is arranged in the reaction kettle, the stirring motor is located below the partition, the bottom end of the rotating shaft passes through the partition, and the stirring blade is located above the partition.

5. A sludge pyrolysis carbonization system according to claim 4, characterized in that: It also includes a feeding and discharging mechanism, which includes a feeding pipe and a discharging door. The feeding pipe and the discharging door are arranged on the outer wall of the reaction kettle, and the bottom surface height of the discharging door is greater than the top surface height of the partition.

6. A sludge pyrolysis carbonization system according to claim 2, characterized in that: The sampling mechanism also includes a storage tank, a gas pipeline, a spiral condenser and a support platform. The support platform and the storage tank are arranged on a horizontal plate. One end of the gas pipeline is connected to the storage tank, and the other end is used to dock with the sampling pipeline. The spiral condenser is wrapped around the outside of the gas pipeline, and its bottom end is in contact with the top surface of the support platform.

7. A sludge pyrolysis carbonization system according to claim 6, characterized in that: The gas pipeline includes a vertical pipe, a horizontal pipe, a telescopic pipe, a butt joint pipe, a force plate and an electric push rod. The bottom end of the vertical pipe is connected to the top of the storage tank, and the top end is connected to one end of the horizontal pipe. The horizontal pipe, the telescopic pipe and the butt joint pipe are connected in sequence. The sampling pipeline is located on one side of the rotation path of the butt joint pipe. The spiral condenser is wrapped around the outside of the horizontal pipe. The force plate is arranged on the outer wall of the butt joint pipe. The electric push rod is arranged on the side wall of the support platform. The output shaft is connected to the side wall of the force plate. The main control unit is data-connected to the electric push rod.

8. The sludge pyrolysis carbonization system according to claim 7, characterized in that: The receiving tube is arranged on the side wall of the force-bearing plate away from the electric push rod, and the transmitting tube is located on one side of the rotation path of the receiving tube. The infrared light frequencies emitted by the transmitting tubes on the bottom surfaces of different sampling pipes are different, and the main control unit is respectively connected to the transmitting tube and the receiving tube.

9. The sludge pyrolysis carbonization system according to claim 7, characterized in that: The outer wall diameter of the butt joint tube is smaller than the inner wall diameter of the sampling pipeline. The gas pipeline also includes an annular airbag, an air pump and an air pump. The annular airbag and the air pump are arranged on the outer wall of the butt joint tube. The air pump connects the annular airbag and the air pump. The main control unit is data-connected to the air pump.

10. The sludge pyrolysis carbonization system according to claim 9, characterized in that: The gas pipeline also includes a deflation pipe and an air valve. The deflation pipe is connected to the air pumping pipe. The air valve is arranged on the deflation pipe. The main control unit is data-connected to the air valve.

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