Stacked waste pyrolysis reactor system sharing a warming furnace

Abstract

The application discloses a stacked waste pyrolysis reaction system sharing a heating furnace and relates to the technical field of pyrolysis solid waste treatment.The stacked waste pyrolysis reaction system sharing a heating furnace comprises a shared heating furnace, a stacked pyrolysis reaction kettle frame, a left stacked pyrolysis reaction kettle assembly, a right stacked pyrolysis reaction kettle assembly, a main feeding pipe, a shared slagging device and a pyrolysis oil condenser.Two groups of stacked multilayer pyrolysis reaction kettles are arranged in the shared heating furnace through the stacked pyrolysis reaction kettle frame, and compared with only one group of stacked reaction kettles, the stacked multilayer pyrolysis reaction kettles double the production capacity, and only one shared heating furnace, a feeding pipe and a slagging device are shared, so that investment and operation links are reduced, and the stacked waste pyrolysis reaction system is more economical and practical, and the amount of solid waste subjected to pyrolysis is doubled;the raw material pretreatment device is arranged at the feeding position, and a solid waste size monitoring module based on vision is matched, so that the solid waste particle size entering the pyrolysis reaction system can be better controlled, and the subsequent solid waste pyrolysis reaction effect is more stable.

Description

Technical Field

[0001] This invention relates to the field of pyrolysis solid waste treatment technology, and in particular to a stacked waste pyrolysis reaction system with a shared heating furnace. Background Technology

[0002] Solid waste pyrolysis technology refers to the technical measures of heating solid waste under anaerobic or oxygen-deficient conditions to decompose it into storable and easily transportable energy sources such as gaseous fuels and fuel oils, or to recover resource-based products (such as pyrolysis liquid products for use as chemical raw materials). Because pyrolysis takes place under anaerobic or oxygen-deficient conditions, its exhaust volume is less than that of incineration. It is mainly used for the treatment and utilization of municipal solid waste, sludge, waste plastics, waste rubber, and other wastes.

[0003] For the pyrolysis of common solid waste, such as waste tires and waste plastics, existing equipment includes a single-unit stacked structure, where multiple reactors are arranged vertically. However, because there is only one unit, the production capacity is limited; to increase the production capacity, multiple sets of such equipment are required. Adding multiple sets of equipment means occupying the area of ​​multiple workshops, adding multiple independent operating procedures, setting up multiple heating devices, as well as slag discharge devices and feeding systems, thus increasing investment.

[0004] In order to achieve large-scale production while reducing various inputs and increasing production capacity without affecting transportation, it is necessary to invent a new stacked waste pyrolysis reaction combination device for shared heating furnace. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a stacked waste pyrolysis reaction system with a shared heating furnace. The technical solution is as follows:

[0006] A stacked waste pyrolysis reaction system with a shared heating furnace includes a shared heating furnace, a stacked pyrolysis reactor frame, a left stacked pyrolysis reactor assembly, a right stacked pyrolysis reactor assembly, a main feed pipe, a shared slag discharge device, a pyrolysis oil condenser, and a raw material pretreatment device.

[0007] The left-side stacked pyrolysis reactor assembly is installed inside the left side of the stacked pyrolysis reactor frame, and the right-side stacked pyrolysis reactor assemblies are installed inside the right side of the stacked pyrolysis reactor frame.

[0008] The main feed pipe is connected to the feed inlets at the top of the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly, respectively;

[0009] The shared slag discharge device is located at the bottom of the inner wall of the shared heating furnace. The slag inlet of the shared slag discharge device is connected to the slag outlets at the bottom of the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly, respectively. The slag outlet of the shared slag discharge device is located outside the shared heating furnace.

[0010] The side wall of the shared heating furnace is equipped with a pyrolysis oil circulation inlet and outlet. The pyrolysis oil circulation inlets and outlets of the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly are connected to the pyrolysis oil circulation inlet and outlet of the shared heating furnace through pipelines. The pyrolysis oil circulation inlet and outlet of the pyrolysis oil condenser are connected to the pyrolysis oil circulation inlet and outlet of the shared heating furnace for cooling the pyrolysis oil.

[0011] A shared heating furnace is used to simultaneously heat the left-side stacked pyrolysis reactor assembly and the right-side stacked pyrolysis reactor assembly;

[0012] The raw material pretreatment device includes a solid waste shredder, a solid waste size monitoring module, and a chip-based controller. The solid waste shredder is used to pre-treat and shred the solid waste to be pyrolyzed. The discharge port is connected to the main feed pipe. The solid waste size monitoring module calculates the external dimensions of the solid waste to be pyrolyzed based on an image analysis algorithm and transmits the data to the controller. The controller controls the power of the solid waste shredder.

[0013] By adopting the above technical solution, two sets of stacked multi-layer pyrolysis reactors are set up in a shared heating furnace using a stacked pyrolysis reactor frame, namely the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly. Compared with only one set of stacked reactors, the production capacity is doubled. Furthermore, only one shared heating furnace, feed pipe and slag discharge device are used, reducing investment and operation links, making it more economical and practical. The amount of solid waste from one pyrolysis is increased several times, which can ensure the stability of the pyrolysis effect as much as possible.

[0014] The raw materials are pre-treated, such as waste tires, rigid waste plastics and sheet plastics, which are all crushed to less than 1 cm before being fed into the main feed pipe. Smaller solid wastes are more stable in the subsequent pyrolysis reaction, resulting in better pyrolysis treatment.

[0015] Then, a solid waste size monitoring module calculates the external dimensions of the solid waste to be pyrolyzed based on a visual image analysis algorithm. The results are used to control the power of the solid waste crusher, so that the solid waste with more uniform and smaller size is more stable in the subsequent pyrolysis reaction and the pyrolysis treatment effect is better.

[0016] Optionally, the stacked pyrolysis reactor frame includes a main frame, left horizontal partition 1, left horizontal partition 2, left horizontal partition 3, right horizontal partition 1, right horizontal partition 2, and right horizontal partition 3. The left horizontal partition 1, left horizontal partition 2, and left horizontal partition 3 are arranged sequentially from top to bottom on the left side of the main frame to provide installation positions for each pyrolysis reactor of the left-side stacked pyrolysis reactor assembly. The right horizontal partition 1, right horizontal partition 2, and right horizontal partition 3 are arranged sequentially from top to bottom on the right side of the main frame to provide installation positions for each pyrolysis reactor of the right-side stacked pyrolysis reactor assembly.

[0017] By adopting the above technical solution, three partitions are set on both the left and right sides inside the stacked pyrolysis reactor frame. The partitions are all frame structures, which ensure the installation support of the pyrolysis reactor while minimizing the contact area with the pyrolysis reactor, and provide installation positions for the left and right stacked reactors respectively.

[0018] Optionally, the left-side stacked pyrolysis reactor assembly includes a first left pyrolysis reactor, a second left pyrolysis reactor, a third left pyrolysis reactor, a first left discharge pipe, a second left discharge pipe, a cold / pyrolysis oil inlet pipe, and an outlet pipe. The first left pyrolysis reactor, the second left pyrolysis reactor, and the third left pyrolysis reactor are installed sequentially from top to bottom on the first left horizontal partition, the second left horizontal partition, and the third left horizontal partition. The feed inlet at the top of the first left pyrolysis reactor is connected to the main feed pipe, and the first left discharge pipe is connected to the bottom of the first left pyrolysis reactor. The discharge port of the first pyrolysis reactor and the inlet at the top of the second pyrolysis reactor are connected. The second left discharge pipe is connected to the discharge port at the bottom of the second pyrolysis reactor and the inlet at the top of the third pyrolysis reactor. The slag discharge port at the bottom of the third pyrolysis reactor is connected to the slag inlet of the common slag discharge device. The cold and pyrolysis oil inlets and outlets of the first, second and third pyrolysis reactors are respectively connected to the pyrolysis oil circulation inlet and outlet on the side wall of the common heating furnace through cold and pyrolysis oil inlet pipes.

[0019] Optionally, the right-side stacked pyrolysis reactor assembly includes right pyrolysis reactor one, right pyrolysis reactor two, right pyrolysis reactor three, right discharge pipe one, and right discharge pipe two. Right pyrolysis reactor one, right pyrolysis reactor two, and right pyrolysis reactor three are sequentially mounted from top to bottom on right horizontal partition one, right horizontal partition two, and right horizontal partition three. The feed inlet at the top of right pyrolysis reactor one is connected to the main feed pipe, and right discharge pipe one is connected to the discharge outlet at the bottom of right pyrolysis reactor one. The feed inlet at the top of the right pyrolysis reactor II is connected to the discharge outlet at the bottom of the right pyrolysis reactor II and the feed inlet at the top of the right pyrolysis reactor III. The slag outlet at the bottom of the right pyrolysis reactor III is connected to the slag inlet of the common slag discharge device. The cold and pyrolysis oil inlets and outlets of the right pyrolysis reactor I, right pyrolysis reactor II and right pyrolysis reactor III are respectively connected to the pyrolysis oil circulation inlet and outlet on the side wall of the common heating furnace through cold and pyrolysis oil inlet pipes.

[0020] By adopting the above technical solution, three pyrolysis reactors are set on both the left and right sides. While meeting the requirements of production capacity and economy, the arrangement of more than four or five reactors is not adopted. This is mainly because the heating effect of the shared heating furnace is limited. If there are more pyrolysis reactors, the temperature of the pyrolysis reactor in the middle will be difficult to control. In addition, if there are more reactors, the whole equipment will be larger and more difficult to transport.

[0021] Optionally, it also includes a flue pipe, a left exhaust pipe, and a right exhaust pipe. The flue pipe is located at the top exhaust port of the common heating furnace, and the left exhaust pipe and the right exhaust pipe are respectively located on both sides of the common heating furnace for discharging the flue gas from the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly.

[0022] By adopting the above technical solution, the arrangement of the flue pipe, left exhaust pipe and right exhaust pipe facilitates the shared exhaust of the heating furnace. At the same time, the left and right exhaust pipes are set separately for the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly to discharge the waste gas from the pyrolysis process. Desulfurization and denitrification purification devices can also be installed in the flue pipe, left exhaust pipe and right exhaust pipe to meet environmental protection emission requirements.

[0023] Optionally, the common slag discharge device is a slag discharge screw conveyor.

[0024] Optionally, the solid waste size monitoring module includes a visual analysis module and an alarm module. The visual analysis module has a vision camera installed at a shooting port on the side wall of the main feed pipe to capture images of the solid waste to be pyrolyzed falling through the main feed pipe. Based on the captured images, an image analysis algorithm is used to calculate the external dimensions of the solid waste to be pyrolyzed. The alarm module includes a main control chip and an alarm. The main control chip receives the visual detection data transmitted by the visual analysis module and controls the alarm to activate.

[0025] By adopting the above technical solution, the visual analysis module can effectively monitor the size of solids entering the pyrolysis reaction system. This size mainly refers to the diameter. For irregular solid waste, its largest external dimension represents the diameter. Under the control logic of the alarm module's main control chip, the alarm action of the alarm can be controlled by the data analyzed by the visual analysis module, so as to avoid too much large-sized solid waste entering the pyrolysis reaction system and affecting the overall pyrolysis treatment effect.

[0026] Optionally, the image analysis algorithm is as follows: the visual analysis module takes a snapshot of the image to be detected every ten seconds, performs contour feature recognition on the image to be detected, selects the features with complete contours based on the contour region, performs two-dimensional processing on the selected region, and performs size calculation based on the two-dimensional processed contour to obtain the size calculation value of the solid waste to be pyrolyzed. Every minute, the size values ​​of the solid waste to be pyrolyzed calculated after identifying all complete contour features are transmitted to the main control chip.

[0027] By adopting the above technical solution, since this is a pyrolysis treatment of solid waste, the accuracy requirement for size detection is not very high. The use of time-interval sampling shooting detection method can reduce the workload of the visual analysis module and reduce the failure rate. In each captured image, the feature recognition of the complete outline is performed and the outline is selected. The outline after two-dimensional processing is marked, and the size value is obtained by size calculation. The size value is then transmitted to the main control chip.

[0028] Optionally, the main control chip controls the alarm switch by setting a solid waste size alarm threshold T, setting the number of size values ​​within one minute as X, the size standard of the solid waste to be pyrolyzed as Y, and the number of size values ​​of the solid waste to be pyrolyzed that exceed Y and are less than 3Y within one minute as X1. If there is at least one solid waste to be pyrolyzed whose size is greater than 3Y, the main control chip controls the alarm to turn on.

[0029] If X1 is greater than 10%X, the main control chip will activate the alarm.

[0030] By adopting the above technical solutions, for example, the feed size requirement for the pyrolysis reaction is less than 1 cm. Since it is a random inspection, if solid waste particles larger than 3 cm are found to enter, if they are not dealt with in time, the large particles will affect the overall pyrolysis reaction effect. Therefore, it is necessary to activate the alarm to remind the staff to check and deal with the raw material pretreatment device.

[0031] Optionally, while controlling the alarm to activate, the main control chip interacts with the controller to adjust data. The controller controls the solid waste shredder to operate at 1.2 times its rated power for 1 minute. After a 1-minute interval, if the main control chip still meets the conditions for controlling the alarm to activate, it again controls the solid waste shredder to operate at 1.2 times its rated power for 1 minute, until the main control chip determines that the conditions for controlling the alarm to activate are no longer met.

[0032] By adopting the above technical solution and using a feedback-based automatic control method, more uniform and smaller-sized solid waste can undergo pyrolysis, resulting in a more stable pyrolysis reaction and better pyrolysis treatment effect.

[0033] In summary, the present invention has at least one of the following beneficial technical effects:

[0034] This invention provides a stacked waste pyrolysis reaction system with a shared heating furnace. Two sets of stacked multi-layer pyrolysis reactors are set in a shared heating furnace through a stacked pyrolysis reactor frame. Compared with a single stacked reactor, the capacity is doubled. The system uses only one shared heating furnace, and the feed pipe and slag discharge device are all shared, reducing investment and operation steps. It is more economical and practical, and the amount of solid waste pyrolyzed in one operation is multiplied. It can also ensure the stability of the pyrolysis effect as much as possible.

[0035] A raw material pretreatment device is installed at the feed point, along with a vision-based solid waste size monitoring module, which can better control the size of solid waste particles entering the pyrolysis reaction system, making the subsequent solid waste pyrolysis reaction effect more stable. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structural principle of a stacked waste pyrolysis reaction system with a shared heating furnace according to the present invention;

[0037] Figure 2 This is a schematic diagram of the structural principle of a stacked waste pyrolysis reaction system with a shared heating furnace according to the present invention;

[0038] Figure 3 This is a schematic diagram of the feeding structure of a stacked waste pyrolysis reaction system with a shared heating furnace according to the present invention.

[0039] Figure 4 This is a schematic diagram of the stacked pyrolysis reactor frame structure of a stacked waste pyrolysis reaction system with a shared heating furnace according to the present invention;

[0040] Figure 5 This is a schematic diagram of the electrical component connection principle of the solid waste size monitoring module of a stacked waste pyrolysis reaction system with a shared heating furnace according to the present invention.

[0041] Explanation of reference numerals in the attached diagram: 1. Shared heating furnace; 2. Stacked pyrolysis reactor frame; 21. Overall frame; 22. Left transverse partition 1; 23. Left transverse partition 2; 24. Left transverse partition 3; 25. Right transverse partition 1; 26. Right transverse partition 2; 27. Right transverse partition 3; 31. Left pyrolysis reactor 1; 32. Left pyrolysis reactor 2; 33. Left pyrolysis reactor 3; 34. Left discharge pipe 1; 35. Left discharge pipe 2; 4 1. Right pyrolysis reactor one; 42. Right pyrolysis reactor two; 43. Right pyrolysis reactor three; 44. Right discharge pipe one; 45. Right discharge pipe two; 5. Main feed pipe; 51. Feeding auger; 6. Shared slag discharge device; 7. Solid waste shredder; 81. Smoke pipe; 82. Left exhaust pipe; 83. Right exhaust pipe; 931. Visual analysis module; 932. Main control chip; 933. Alarm; 100. Controller. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings.

[0043] This invention discloses a stacked waste pyrolysis reaction system with a shared heating furnace.

[0044] Reference Figure 1 - Figure 5Example 1: A stacked waste pyrolysis reaction system with a shared heating furnace, including a shared heating furnace 1, a stacked pyrolysis reactor frame 2, a left stacked pyrolysis reactor assembly, a right stacked pyrolysis reactor assembly, a main feed pipe 5, a shared slag discharge device 6, a pyrolysis oil condenser, and a raw material pretreatment device.

[0045] The left-side stacked pyrolysis reactor assembly is installed inside the left side of the stacked pyrolysis reactor frame 2, and the right-side stacked pyrolysis reactor assemblies are respectively installed inside the right side of the stacked pyrolysis reactor frame 2.

[0046] The main feed pipe 5 is connected to the feed inlets at the top of the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly, respectively.

[0047] The shared slag discharge device 6 is located at the bottom of the inner wall of the shared heating furnace 1. The slag inlet of the shared slag discharge device 6 is connected to the slag outlets at the bottom of the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly, respectively. The slag outlet of the shared slag discharge device 6 is located outside the shared heating furnace 1.

[0048] The side wall of the shared heating furnace 1 is provided with a pyrolysis oil circulation inlet and outlet. The pyrolysis oil circulation inlets and outlets of the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly are connected to the pyrolysis oil circulation inlet and outlet of the shared heating furnace 1 through pipelines. The pyrolysis oil circulation inlet and outlet of the pyrolysis oil condenser are connected to the pyrolysis oil circulation inlet and outlet of the shared heating furnace 1 for cooling the pyrolysis oil.

[0049] The shared heating furnace 1 is used to simultaneously heat the left-side stacked pyrolysis reactor assembly and the right-side stacked pyrolysis reactor assembly;

[0050] The raw material pretreatment device includes a solid waste shredder 7, a solid waste size monitoring module, and a chip-based controller 100. The solid waste shredder 7 is used to pre-treat and shred the solid waste to be pyrolyzed. The discharge port is connected to the main feed pipe 5. The solid waste size monitoring module calculates the external dimensions of the solid waste to be pyrolyzed based on an image analysis algorithm and transmits the data to the controller 100. The controller 100 controls the power of the solid waste shredder 7.

[0051] Two sets of stacked multi-layer pyrolysis reactors are set up in a shared heating furnace 1 through a stacked pyrolysis reactor frame 2, namely the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly. Compared with only one set of stacked reactors, the production capacity is doubled. However, by using only one shared heating furnace 1, the feed pipe and slag discharge device are also shared, which reduces investment and operation links, making it more economical and practical. The amount of solid waste from one pyrolysis is multiplied, which can ensure the stability of the pyrolysis effect as much as possible.

[0052] The raw materials are pre-treated, such as waste tires, rigid waste plastics and sheet plastics, which are all crushed to less than 1 cm before being fed into the main feed pipe 5. Smaller solid wastes are more stable in the subsequent pyrolysis reaction and have a better pyrolysis treatment effect.

[0053] Then, a solid waste size monitoring module calculates the external dimensions of the solid waste to be pyrolyzed based on a visual image analysis algorithm. The judgment is used to control the power of the solid waste shredder 7, so that the solid waste with more uniform and smaller size is more stable in the subsequent pyrolysis reaction and the pyrolysis treatment effect is better.

[0054] Example 2: The stacked pyrolysis reactor frame 2 includes a main frame 21, a left horizontal partition 1 22, a left horizontal partition 23, a left horizontal partition 3 24, a right horizontal partition 1 25, a right horizontal partition 26, and a right horizontal partition 3 27. The left horizontal partitions 1 22, 23, and 3 24 are arranged sequentially from top to bottom on the left side of the main frame 21 to provide mounting positions for each pyrolysis reactor in the left-side stacked pyrolysis reactor assembly. The right horizontal partitions 1 25, 26, and 3 27 are arranged sequentially from top to bottom on the right side of the main frame 21 to provide mounting positions for each pyrolysis reactor in the right-side stacked pyrolysis reactor assembly.

[0055] The stacked pyrolysis reactor frame 2 has three partitions on both the left and right sides. The partitions are all frame structures, which ensure the installation support of the pyrolysis reactor while minimizing the contact area with the pyrolysis reactor, and provide installation positions for the two sets of stacked reactors on the left and right sides respectively.

[0056] Example 3: The left-side stacked pyrolysis reactor assembly includes a left pyrolysis reactor 1 31, a left pyrolysis reactor 2 32, a left pyrolysis reactor 33, a left discharge pipe 1 34, a left discharge pipe 2 35, a cold / pyrolysis oil inlet pipe, and an oil outlet pipe. The left pyrolysis reactors 1 31, 2 32, and 33 are sequentially mounted from top to bottom on the left horizontal partitions 1 22, 2 23, and 3 24. The feed inlet at the top of the left pyrolysis reactor 1 31 is connected to the main feed pipe 5, and the left discharge pipe 1 34 is connected to the left pyrolysis reactor... The discharge port at the bottom of the first pyrolysis reactor 31 and the inlet at the top of the second pyrolysis reactor 32 are connected. The second left discharge pipe 35 connects the discharge port at the bottom of the second pyrolysis reactor 32 and the inlet at the top of the third pyrolysis reactor 33. The slag discharge port at the bottom of the third pyrolysis reactor 33 is connected to the slag inlet of the common slag discharge device 6. The cold and pyrolysis oil inlets and outlets of the first pyrolysis reactor 31, the second pyrolysis reactor 32 and the third pyrolysis reactor 33 are respectively connected to the pyrolysis oil circulation inlet and outlet on the side wall of the common heating furnace 1 through the cold and pyrolysis oil inlet pipe.

[0057] Example 4: The right-side stacked pyrolysis reactor assembly includes a right pyrolysis reactor 1 (41), a right pyrolysis reactor 2 (42), a right pyrolysis reactor 3 (43), a right discharge pipe 1 (44), and a right discharge pipe 2 (45). The right pyrolysis reactors 1 (41), 2 (42), and 3 (43) are installed sequentially from top to bottom on right horizontal partitions 1 (25), 26 (26), and 3 (27). The feed inlet at the top of the right pyrolysis reactor 1 (41) is connected to the main feed pipe 5, and the right discharge pipe 1 (44) is connected to the bottom of the right pyrolysis reactor 1 (41). The discharge port of the right pyrolysis reactor 2 42 and the inlet at the top of the right pyrolysis reactor 2 42 are connected. The right discharge pipe 2 45 is connected to the discharge port at the bottom of the right pyrolysis reactor 2 42 and the inlet at the top of the right pyrolysis reactor 3 43. The slag discharge port at the bottom of the right pyrolysis reactor 3 43 is connected to the slag discharge port of the common slag discharge device 6. The cold and pyrolysis oil inlets and outlets of the right pyrolysis reactor 1 41, right pyrolysis reactor 2 42 and right pyrolysis reactor 3 43 are respectively connected to the pyrolysis oil circulation inlet and outlet on the side wall of the common heating furnace 1 through the cold and pyrolysis oil inlet pipe.

[0058] The left and right sides each use three pyrolysis reactors. While meeting the requirements of production capacity and economy, the arrangement of four or five reactors is not adopted. This is mainly because the heating effect of the shared heating furnace 1 is limited. If there are more pyrolysis reactors, the temperature of the pyrolysis reactor in the middle will be difficult to control. In addition, if there are more reactors, the entire equipment will be larger and more difficult to transport.

[0059] Example 5, optionally, also includes a flue pipe 81, a left exhaust pipe 82, and a right exhaust pipe 83. The flue pipe 81 is located at the top exhaust port of the common heating furnace 1, and the left exhaust pipe 82 and the right exhaust pipe 83 are respectively located on both sides of the common heating furnace 1, for discharging the flue gas from the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly.

[0060] The arrangement of the flue pipe 81, the left exhaust pipe 82, and the right exhaust pipe 83 facilitates the exhaust of the shared heating furnace 1. At the same time, the left exhaust pipe 82 and the right exhaust pipe 83 are separately provided for the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly to discharge the waste gas from the pyrolysis process. Desulfurization and denitrification purification devices can also be installed in the flue pipe 81, the left exhaust pipe 82, and the right exhaust pipe 83 to meet environmental protection emission requirements.

[0061] The flue pipe 8 is designed to facilitate the use of the top flue outlet of the heating furnace 1 to discharge the exhaust gas from the heating process. A desulfurization and denitrification purification device can also be installed in the flue pipe 8 to meet environmental emission requirements.

[0062] In Example 6, the common slag discharge device 6 is a slag discharge auger.

[0063] Example 7: The solid waste size monitoring module includes a visual analysis module 931 and an alarm module. The visual analysis module 931 has a visual camera installed at the shooting port on the side wall of the main feed pipe 5 to capture images of the solid waste to be pyrolyzed falling from the main feed pipe 5. Based on the captured images, an image analysis algorithm is used to calculate the external dimensions of the solid waste to be pyrolyzed. The alarm module includes a main control chip 932 and an alarm 933. The main control chip 932 receives the visual detection data transmitted by the visual analysis module 931 and controls the alarm 933 to activate the alarm.

[0064] The visual analysis module 931 can effectively monitor the size of solids entering the pyrolysis reaction system. This size mainly refers to the diameter. For irregular solid waste, its largest external dimension represents the diameter. Under the control logic of the alarm module's main control chip 932, the alarm action of the alarm device 933 can be controlled by the data analyzed by the visual analysis module 931, so as to prevent too many large-sized solid wastes from entering the pyrolysis reaction system and affecting the overall pyrolysis treatment effect.

[0065] Example 8: The image analysis algorithm is as follows: The visual analysis module 931 takes a snapshot of the image to be detected every ten seconds, performs contour feature recognition on the image to be detected, selects the features with complete contours based on the contour region, performs two-dimensional processing on the selected region, and performs size calculation based on the two-dimensional processed contour to obtain the size calculation value of the solid waste to be pyrolyzed. Every minute, the size values ​​of the solid waste to be pyrolyzed calculated after identifying all complete contour features are transmitted to the main control chip 932.

[0066] Since this is a pyrolysis process for solid waste, the accuracy requirements for size detection are not very high. Using an interval sampling and shooting detection method can reduce the workload of the visual analysis module 931 and reduce the failure rate. In each captured image, the feature recognition of the complete contour is performed and the outline is selected. The contour line after two-dimensional processing is marked, and the size value is obtained by size calculation. The size value is then transmitted to the main control chip.

[0067] Example 9: The method of the main control chip 932 controlling the alarm 933 is as follows: Set the solid waste size alarm threshold T, let the number of size values ​​within one minute be X, let the size standard of the solid waste to be pyrolyzed be Y, let the number of size values ​​of the solid waste to be pyrolyzed within one minute that exceed Y and are less than 3Y be X1, and if there is at least one solid waste to be pyrolyzed whose size is greater than 3Y, then the main control chip 932 controls the alarm 933 to turn on the alarm.

[0068] If X1 is greater than 10%X, the main control chip 932 controls the alarm 933 to activate the alarm.

[0069] For example, the feed size requirement for the pyrolysis reaction is less than 1 cm. Since it is a random inspection, if solid waste particles larger than 3 cm are found to enter, if they are not dealt with in time, the large particles will affect the overall pyrolysis reaction effect. Therefore, it is necessary to activate the alarm 933 to remind the staff to check and deal with the raw material pretreatment device.

[0070] The method by which controller 100 controls the power of solid waste shredder 7 is as follows:

[0071] In Example 10, while controlling the alarm 933 to activate, the main control chip 932 interacts with the controller 100 to adjust data. The controller 100 controls the solid waste shredder 7 to operate at 1.2 times its rated power for 1 minute. After a 1-minute interval, if the main control chip 932 still meets the conditions for controlling the alarm 933 to activate, it again controls the solid waste shredder 7 to operate at 1.2 times its rated power for 1 minute, until the main control chip 932 determines that the conditions for controlling the alarm 933 to activate are no longer met.

[0072] By adopting a feedback-based automatic control method, more uniform and smaller-sized solid waste can undergo pyrolysis reactions, resulting in more stable pyrolysis reactions and better pyrolysis treatment effects.

[0073] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A stacked waste pyrolysis reaction system with a shared heating furnace, characterized in that: It includes a shared heating furnace (1), a stacked pyrolysis reactor frame (2), a left stacked pyrolysis reactor assembly, a right stacked pyrolysis reactor assembly, a main feed pipe (5), a shared slag discharge device (6), a pyrolysis oil condenser, and a raw material pretreatment device; The left stacked pyrolysis reactor assembly is installed inside the left side of the stacked pyrolysis reactor frame (2), and the right stacked pyrolysis reactor assembly is installed inside the right side of the stacked pyrolysis reactor frame (2); The main feed pipe (5) is connected to the feed inlets at the top of the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly, respectively; The shared slag discharge device (6) is located at the bottom of the inner wall of the shared heating furnace (1). The slag inlet of the shared slag discharge device (6) is connected to the slag outlets at the bottom of the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly, respectively. The slag outlet of the shared slag discharge device (6) is located outside the shared heating furnace (1). The side wall of the shared heating furnace (1) is provided with a pyrolysis oil circulation inlet and outlet respectively. The pyrolysis oil circulation inlet and outlet of the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly are connected to the pyrolysis oil circulation inlet and outlet of the shared heating furnace (1) respectively after being collected by pipes. The pyrolysis oil circulation inlet and outlet of the pyrolysis oil condenser are connected to the pyrolysis oil circulation inlet and outlet of the shared heating furnace (1) respectively, and are used to cool the pyrolysis oil. The shared heating furnace (1) is used to simultaneously heat the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly; The raw material pretreatment device includes a solid waste shredder (7), a solid waste size monitoring module, and a chip-based controller (100). The solid waste shredder (7) is used to pre-treat and shred the solid waste to be pyrolyzed. The discharge port is connected to the main feed pipe (5). The solid waste size monitoring module calculates the external dimensions of the solid waste to be pyrolyzed based on an image analysis algorithm and transmits the data to the controller (100). The controller (100) controls the power of the solid waste shredder (7). The solid waste size monitoring module includes a visual analysis module (931) and an alarm module. The visual camera of the visual analysis module (931) is set at the shooting port set on the side wall of the main feed pipe (5) for shooting the solid waste to be pyrolyzed falling from the main feed pipe (5). Based on the shooting image, the external size of the solid waste to be pyrolyzed is calculated by image analysis algorithm. The alarm module includes a main control chip (932) and an alarm (933). The main control chip (932) receives the visual detection data transmitted by the visual analysis module (931) and controls the alarm (933) to alarm. The image analysis algorithm is as follows: the visual analysis module (931) takes a picture of the image to be detected every ten seconds, performs contour feature recognition on the image to be detected, selects the features with complete contours based on the contour region, performs two-dimensional processing on the selected region, and performs size calculation based on the contour after two-dimensional processing to obtain the size calculation value of the solid waste to be pyrolyzed. Every minute, the size values ​​of the solid waste to be pyrolyzed calculated after all the identified complete contour features are transmitted to the main control chip (932).

2. The stacked waste pyrolysis reaction system with a shared heating furnace according to claim 1, characterized in that: The stacked pyrolysis reactor frame (2) includes a main frame (21), a left horizontal partition 1 (22), a left horizontal partition 2 (23), a left horizontal partition 3 (24), a right horizontal partition 1 (25), a right horizontal partition 2 (26), and a right horizontal partition 3 (27). The left horizontal partition 1 (22), the left horizontal partition 2 (23), and the left horizontal partition 3 (24) are arranged sequentially from top to bottom on the left side of the main frame (21) to provide installation positions for each pyrolysis reactor of the left stacked pyrolysis reactor assembly. The right horizontal partition 1 (25), the right horizontal partition 2 (26), and the right horizontal partition 3 (27) are arranged sequentially from top to bottom on the right side of the main frame (21) to provide installation positions for each pyrolysis reactor of the right stacked pyrolysis reactor assembly.

3. The stacked waste pyrolysis reaction system with a shared heating furnace according to claim 2, characterized in that: The left-side stacked pyrolysis reactor assembly includes a left pyrolysis reactor one (31), a left pyrolysis reactor two (32), a left pyrolysis reactor three (33), a left discharge pipe one (34), a left discharge pipe two (35), a cold and hot pyrolysis oil inlet pipe, and an oil outlet pipe. The left pyrolysis reactor one (31), left pyrolysis reactor two (32), and left pyrolysis reactor three (33) are installed sequentially from top to bottom on the left horizontal partition one (22), left horizontal partition two (23), and left horizontal partition three (24). The feed inlet at the top of the left pyrolysis reactor one (31) is connected to the main feed pipe (5), and the left discharge pipe one (34) is connected to the left pyrolysis reactor three (35). The discharge port at the bottom of reactor one (31) and the feed port at the top of the left pyrolysis reactor two (32) are connected. The left discharge pipe two (35) is connected to the discharge port at the bottom of the left pyrolysis reactor two (32) and the feed port at the top of the left pyrolysis reactor three (33). The slag discharge port at the bottom of the left pyrolysis reactor three (33) is connected to the slag inlet of the common slag discharge device (6). The cold and heat decomposition oil inlets and outlets of the left pyrolysis reactor one (31), left pyrolysis reactor two (32) and left pyrolysis reactor three (33) are respectively connected to the pyrolysis oil circulation inlet and outlet on the side wall of the common heating furnace (1) through the cold and heat decomposition oil inlet pipe.

4. The stacked waste pyrolysis reaction system with a shared heating furnace according to claim 3, characterized in that: The right-side stacked pyrolysis reactor assembly includes a right pyrolysis reactor one (41), a right pyrolysis reactor two (42), a right pyrolysis reactor three (43), a right discharge pipe one (44), and a right discharge pipe two (45). The right pyrolysis reactor one (41), right pyrolysis reactor two (42), and right pyrolysis reactor three (43) are installed sequentially from top to bottom on the right horizontal partition one (25), right horizontal partition two (26), and right horizontal partition three (27). The feed inlet at the top of the right pyrolysis reactor one (41) is connected to the main feed pipe (5). The right discharge pipe one (44) is connected to the right pyrolysis reactor one (45). 1) The bottom outlet and the top inlet of the right pyrolysis reactor 2 (42) are connected. The right drop pipe 2 (45) is connected to the bottom outlet of the right pyrolysis reactor 2 (42) and the top inlet of the right pyrolysis reactor 3 (43). The bottom slag outlet of the right pyrolysis reactor 3 (43) is connected to the slag inlet of the common slag outlet device (6). The cold and hot oil inlets and outlets of the right pyrolysis reactor 1 (41), right pyrolysis reactor 2 (42) and right pyrolysis reactor 3 (43) are respectively connected to the pyrolysis oil circulation inlet and outlet on the side wall of the common heating furnace (1) through the cold and hot oil inlet pipe.

5. A stacked waste pyrolysis reaction system with a shared heating furnace according to claim 4, characterized in that: It also includes a flue pipe (81), a left exhaust pipe (82) and a right exhaust pipe (83). The flue pipe (81) is located at the top exhaust port of the common heating furnace (1). The left exhaust pipe (82) and the right exhaust pipe (83) are respectively located on both sides of the common heating furnace (1) for discharging the flue gas from the left stacked pyrolysis reactor assembly and the right stacked pyrolysis reactor assembly.

6. The stacked waste pyrolysis reaction system with a shared heating furnace according to claim 1, characterized in that: The shared slag discharge device (6) is a slag discharge auger.

7. A stacked waste pyrolysis reaction system with a shared heating furnace according to claim 1, characterized in that: The method by which the main control chip (932) controls the alarm (933) to switch on and off is as follows: set the solid waste size alarm threshold T, set the number of size values ​​within one minute as X, set the size standard of the solid waste to be pyrolyzed as Y, set the number of size values ​​of the solid waste to be pyrolyzed that exceed Y and are less than 3Y within one minute as X1, and if there is at least one solid waste to be pyrolyzed whose size is greater than 3Y, then the main control chip (932) controls the alarm (933) to turn on the alarm. If X1 is greater than 10%X, the main control chip (932) controls the alarm (933) to activate the alarm.

8. A stacked waste pyrolysis reaction system with a shared heating furnace according to claim 7, characterized in that: The method by which the controller (100) controls the power of the solid waste shredder (7) is as follows: While controlling the alarm (933) to activate the alarm, the main control chip (932) interacts with the controller (100) to adjust data. The controller (100) controls the solid waste shredder (7) to operate at 1.2 times the rated power for 1 minute. After a 1-minute interval, if the main control chip (932) still meets the conditions for controlling the alarm (933) to activate the alarm, it controls the solid waste shredder (7) to operate at 1.2 times the rated power for 1 minute again, until the main control chip (932) determines that the conditions for controlling the alarm (933) to activate the alarm are not met.

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