A pyrolysis system for solid waste

Abstract

The disclosure provides a pyrolysis system of solid waste, comprising: a pyrolysis chamber, the top of the pyrolysis chamber is provided with an exhaust pipeline, and the bottom of the pyrolysis chamber is provided with a discharge pipeline; an energy storage device, the energy storage device comprises: an endothermic passage and an exothermic passage, the exothermic passage is arranged in the pyrolysis chamber; a first heat exchanger, the hot side passage of the first heat exchanger is connected in series on the exhaust pipeline, and the cold side passage of the first heat exchanger is connected in series on the endothermic passage; a second heat exchanger, the hot side passage of the second heat exchanger is connected in series on the discharge pipeline, and the cold side passage of the second heat exchanger is connected in series on the endothermic passage. In the pyrolysis system of solid waste, the heat in the gas phase product and the solid phase product is recycled, the waste of resources is avoided, and the pyrolysis cost of the solid waste is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of solid waste treatment, in particular to a pyrolysis system of solid waste. BACKGROUND

[0002] With the rapid development of society, more and more solid waste such as dust and slag, the pyrolysis treatment of solid waste can make biomass energy be widely used, and realize the harmless treatment of solid waste, effectively improve the energy problem, environmental problem, etc.

[0003] Among them, the solid waste will produce gas phase products and solid phase products when pyrolysis, and the gas phase products and solid phase products contain a large amount of heat energy, which is usually wasted in the discharge process and transportation process of the gas phase products and solid phase products, resulting in high cost of pyrolysis of solid waste. SUMMARY

[0004] The present disclosure aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, the purpose of the present disclosure is to provide a pyrolysis system of solid waste.

[0006] In order to achieve the above purpose, the present disclosure provides a pyrolysis system of solid waste, comprising: a pyrolysis chamber, the top of the pyrolysis chamber is provided with an exhaust pipe, the bottom of the pyrolysis chamber is provided with a discharge pipe; an energy storage device, the energy storage device comprises: an endothermic passage and an exothermic passage, the exothermic passage is arranged in the pyrolysis chamber; a first heat exchanger, the hot side passage of the first heat exchanger is connected in series on the exhaust pipe, the cold side passage of the first heat exchanger is connected in series on the endothermic passage; a second heat exchanger, the hot side passage of the second heat exchanger is connected in series on the discharge pipe, the cold side passage of the second heat exchanger is connected in series on the endothermic passage.

[0007] Optionally, the energy storage device comprises: a low-temperature molten salt tank, the liquid outlet end of the low-temperature molten salt tank is connected with the liquid inlet end of the cold side passage of the first heat exchanger and the liquid inlet end of the cold side passage of the second heat exchanger; a high-temperature molten salt tank, the liquid inlet end of the high-temperature molten salt tank is connected with the liquid outlet end of the cold side passage of the first heat exchanger and the liquid outlet end of the cold side passage of the second heat exchanger; a heat release pipe, the heat release pipe is arranged in the pyrolysis chamber, the liquid inlet end of the heat release pipe is connected with the liquid outlet end of the high-temperature molten salt tank, and the liquid outlet end of the heat release pipe is connected with the liquid inlet end of the low-temperature molten salt tank.

[0008] Optionally, the heat releasing pipe comprises: a first spiral pipe, the first spiral pipe is arranged on the inner wall of the pyrolysis chamber, the liquid inlet end of the first spiral pipe is connected with the liquid outlet end of the high-temperature molten salt tank, and the liquid outlet end of the first spiral pipe is connected with the liquid inlet end of the low-temperature molten salt tank; and a second spiral pipe, the second spiral pipe is arranged on the inner wall of the pyrolysis chamber, the liquid inlet end of the second spiral pipe is connected with the liquid outlet end of the high-temperature molten salt tank, and the liquid outlet end of the second spiral pipe is connected with the liquid inlet end of the low-temperature molten salt tank; wherein the flow direction of the molten salt in the first spiral pipe is opposite to the flow direction of the molten salt in the second spiral pipe.

[0009] Optionally, the energy storage device further comprises: an electric heater, the liquid inlet end of the electric heater is connected with the liquid outlet end of the cold side passage of the first heat exchanger and the liquid outlet end of the cold side passage of the second heat exchanger, and the liquid outlet end of the electric heater is connected with the liquid inlet end of the high-temperature molten salt tank; and a temperature sensor, the detection end of the temperature sensor is arranged in the high-temperature molten salt tank, and the temperature sensor is used for detecting the temperature in the high-temperature molten salt tank.

[0010] Optionally, the energy storage device further comprises: a first pump body, the first pump body is arranged between the liquid outlet end of the low-temperature molten salt tank and the liquid inlet end of the cold side passage of the first heat exchanger and the liquid inlet end of the cold side passage of the second heat exchanger, the liquid inlet end of the first pump body is connected with the liquid outlet end of the low-temperature molten salt tank, and the liquid outlet end of the first pump body is connected with the liquid inlet end of the cold side passage of the first heat exchanger and the liquid inlet end of the cold side passage of the second heat exchanger; and a second pump body, the second pump body is arranged between the liquid inlet end of the heat releasing pipe and the liquid outlet end of the high-temperature molten salt tank, the liquid inlet end of the second pump body is connected with the liquid outlet end of the high-temperature molten salt tank, and the liquid outlet end of the second pump body is connected with the liquid inlet end of the heat releasing pipe.

[0011] Optionally, the pyrolysis system further comprises: a shell; a partition plate, the partition plate is arranged in the shell, the partition plate divides the pyrolysis chamber into a crushing chamber and the pyrolysis chamber, the crushing chamber is located above the pyrolysis chamber, the top of the crushing chamber is provided with a feeding pipeline, and a plurality of leakage holes are arranged on the partition plate; a crushing shaft, the crushing shaft is rotationally arranged in the shell; a plurality of first blades, a plurality of the first blades are sequentially arranged on the crushing shaft in the circumferential direction of the crushing shaft, and the first blades are located in the crushing chamber; and a driving device, the driving device is arranged on the shell, and the driving device is in transmission connection with the crushing shaft.

[0012] Optionally, the pyrolysis system further comprises: a plurality of second blades, a plurality of the second blades are sequentially arranged on the inner wall of the crushing chamber in the circumferential direction of the crushing shaft.

[0013] Optionally, the pyrolysis system further includes: a first spiral blade, which is disposed on the crushing shaft and located in the pyrolysis chamber. A material discharge channel is provided between the outer circumferential surface of the first spiral blade and the inner wall of the pyrolysis chamber. The first spiral blade spirals forward in the direction from the bottom of the pyrolysis chamber to the top of the pyrolysis chamber.

[0014] Optionally, the pyrolysis system further includes: a second helical blade, which is disposed on the crushing shaft and located in the pyrolysis chamber, above the first helical blade, and the first helical blade spirals forward in a direction from the top of the pyrolysis chamber to the bottom of the pyrolysis chamber.

[0015] Optionally, the housing includes: an inner shell, with a partition disposed inside the inner shell, the partition dividing the inner shell into the crushing chamber and the pyrolysis chamber, and the crushing shaft rotatably disposed inside the inner shell; and an outer shell, which is fitted onto the inner shell, and a vacuum cavity is provided between the outer shell and the inner shell, and the driving device is disposed on the outer shell.

[0016] The technical solution provided in this disclosure may include the following beneficial effects:

[0017] Because the hot-side passage of the first heat exchanger is connected in series with the exhaust pipe, the heat in the gaseous product is transferred to the cold-side passage of the first heat exchanger as it passes through the exhaust pipe. Since the cold-side passage of the first heat exchanger is connected in series with the heat absorption passage, the heat in the gaseous product can ultimately be stored in the energy storage device. Similarly, because the hot-side passage of the second heat exchanger is connected in series with the discharge pipe, the heat in the solid product is transferred to the cold-side passage of the second heat exchanger as it passes through the discharge pipe.

[0018] In the process, because the cold-side passage of the second heat exchanger is connected in series with the heat absorption passage, the heat in the solid product can ultimately be stored in the energy storage device; because the heat release passage is located in the pyrolysis chamber, the heat stored in the energy storage device can enter the heat exchanger.

[0019] The pyrolysis chamber heats the solid waste, thereby enabling the reuse of heat in both gaseous and solid products, avoiding resource waste and effectively reducing the pyrolysis cost of solid waste.

[0020] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a structural schematic diagram of a pyrolysis system of solid waste according to an embodiment of the present disclosure;

[0023] 5 Figure 2 is a structural schematic diagram of a pyrolysis system of solid waste according to an embodiment of the present disclosure;

[0024] As shown in the figure: 1, pyrolysis chamber, 2, exhaust pipeline, 3, discharge pipeline;

[0025] 4, energy storage device, 401, heat absorption passage, 402, heat release passage, 403, low-temperature molten salt tank, 404, high-temperature molten salt tank,

[0026] 405, heat release pipe, 406, electric heater, 407, temperature sensor, 408, first pump body, 409, second pump body;

[0027] 4051, first spiral pipe, 4052, second spiral pipe;

[0028] 05, first heat exchanger, 6, second heat exchanger;

[0029] 7, shell, 701, inner shell, 702, outer shell, 703, vacuum cavity;

[0030] 8, partition, 9, crushing chamber, 10, feeding pipeline, 11, leakage hole, 12, crushing shaft, 13, first blade, 14, driving device, 15, second blade, 16, first spiral blade, 17, material falling passage, 18, second spiral blade. DETAILED DESCRIPTION

[0031] The embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present disclosure, and cannot be understood as a limitation of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0032] As Figure 1 and Figure 2 shown, the present disclosure proposes a pyrolysis system of solid waste, which comprises a pyrolysis chamber 1, an energy storage device 4, a heat absorption passage 401, a heat release passage 402, a low-temperature molten salt tank 403, a high-temperature molten salt tank 404, a heat release pipe 405, an electric heater 406, a temperature sensor 407, a first pump body 408, a second pump body 409, a first heat exchanger 05 and a second heat exchanger 6.

[0033] The energy storage device 4, the first heat exchanger 5 and the second heat exchanger 6, the top of the pyrolysis chamber 1 is provided with an exhaust pipeline 2, the bottom of the pyrolysis chamber 1 is provided with a discharge pipeline 3, the energy storage device 4 includes a heat absorption passage 401 and a heat release passage 402, the heat release passage 402 is arranged in the pyrolysis chamber 1, the hot side passage of the first heat exchanger 5 is connected in series on the exhaust pipeline 2, the cold side passage of the first heat exchanger 5 is connected in series on the heat absorption passage 401, the hot side passage of the second heat exchanger 6 is connected in series on the discharge pipeline 3, and the cold side passage of the second heat exchanger 6 is connected in series on the heat absorption passage 401.

[0034] It can be understood that the solid waste generates a pyrolysis reaction in the pyrolysis chamber 1 and generates gas phase products and solid phase products, the gas phase products are discharged from the pyrolysis chamber 1 through the exhaust pipeline 2, and the solid phase products are discharged from the pyrolysis chamber 1 through the discharge pipeline 3, so that the pyrolysis treatment of the solid waste is realized.

[0035] Among them, since the hot side passage of the first heat exchanger 5 is connected in series on the exhaust pipeline 2, when the gas phase product passes through the exhaust pipeline 2, the heat in the gas phase product is conducted into the cold side passage of the first heat exchanger 5, and since the cold side passage of the first heat exchanger 5 is connected in series on the heat absorption passage 401, the heat in the gas phase product can be finally stored in the energy storage device 4.

[0036] Since the hot side passage of the second heat exchanger 6 is connected in series on the discharge pipeline 3, when the solid phase product passes through the discharge pipeline 3, the heat in the solid phase product is conducted into the cold side passage of the second heat exchanger 6, and since the cold side passage of the second heat exchanger 6 is connected in series on the heat absorption passage 401, the heat in the solid phase product can be finally stored in the energy storage device 4.

[0037] Since the heat release passage 402 is arranged in the pyrolysis chamber 1, the heat stored in the energy storage device 4 can enter the pyrolysis chamber 1 and heat the solid waste, thereby realizing the reuse of the heat in the gas phase product and the solid phase product, avoiding resource waste while effectively reducing the pyrolysis cost of the solid waste.

[0038] It should be noted that the first heat exchanger 5 and the second heat exchanger 6 each include a hot side passage and a cold side passage, and heat exchange is performed between the hot side passage and the cold side passage, wherein the heat exchange mode between the hot side passage and the cold side passage can be set according to actual needs, and no limitation is made to this, for example, the hot side passage and the cold side passage can be in direct contact for heat exchange; the hot side passage and the cold side passage can be indirectly heat-exchanged through a heat exchange medium.

[0039] The exhaust pipeline 2 is used for discharging the gas phase product in the pyrolysis chamber 1, and the discharge pipeline 3 is used for discharging the solid phase product in the pyrolysis chamber 1. The exhaust pipeline 2 and the discharge pipeline 3 can be provided with a valve body or other switching structure to facilitate the on-off control of the exhaust pipeline 2 and the discharge pipeline 3. According to actual needs, the exhaust pipeline 2 and the discharge pipeline 3 can be respectively connected to the equipment of the next process after the pyrolysis treatment, so as to further treat the gas phase product and the solid phase product.

[0040] As shown in Figure 2 In some embodiments, the energy storage device 4 includes a low-temperature molten salt tank 403, a high-temperature molten salt tank 404, and a heat release pipe 405. The outlet end of the low-temperature molten salt tank 403 is connected to the inlet end of the cold side passage of the first heat exchanger 5 and the inlet end of the cold side passage of the second heat exchanger 6. The inlet end of the high-temperature molten salt tank 404 is connected to the outlet end of the cold side passage of the first heat exchanger 5 and the outlet end of the cold side passage of the second heat exchanger 6. The heat release pipe 405 is arranged in the pyrolysis chamber 1. The inlet end of the heat release pipe 405 is connected to the outlet end of the high-temperature molten salt tank 404, and the outlet end of the heat release pipe 405 is connected to the inlet end of the low-temperature molten salt tank 403.

[0041] It can be understood that the low-temperature molten salt in the low-temperature molten salt tank 403 passes through the cold side passage of the first heat exchanger 5, and when the gas phase product passes through the exhaust pipeline 2, the heat in the gas phase product is conducted into the cold side passage of the first heat exchanger 5 to heat the low-temperature molten salt in the cold side passage of the first heat exchanger 5, thereby converting the low-temperature molten salt into high-temperature molten salt and storing it in the high-temperature molten salt tank 404.

[0042] The low-temperature molten salt in the low-temperature molten salt tank 403 passes through the cold side passage of the second heat exchanger 6, and when the solid phase product passes through the discharge pipeline 3, the heat in the solid phase product is conducted into the cold side passage of the second heat exchanger 6 to heat the low-temperature molten salt in the cold side passage of the second heat exchanger 6, thereby converting the low-temperature molten salt into high-temperature molten salt and storing it in the high-temperature molten salt tank 404.

[0043] When the high-temperature molten salt in the high-temperature molten salt tank 404 passes through the heat release pipe 405, the heat in the high-temperature molten salt is conducted into the pyrolysis chamber 1 to heat the solid waste in the pyrolysis chamber 1, thereby realizing the pyrolysis treatment of the solid waste.

[0044] Therefore, by arranging the low-temperature molten salt tank 403, the high-temperature molten salt tank 404, and the heat release pipe 405, the heat in the gas phase product and the solid phase product is reused, which avoids resource waste and effectively reduces the pyrolysis cost of the solid waste.

[0045] It should be noted that the passage between the outlet end of the low-temperature molten salt tank 403 and the inlet end of the high-temperature molten salt tank 404 constitutes the heat absorption passage 401 of the energy storage device 4, and the heat release pipe 405 constitutes the heat release passage 402 of the energy storage device 4.

[0046] The low-temperature molten salt tank 403 is used for storing low-temperature molten salt, and the specific type of the low-temperature molten salt tank 403 can be set according to actual needs, and no limitation is made thereto.

[0047] The high-temperature molten salt tank 404 is used for storing high-temperature molten salt, and the specific type of the high-temperature molten salt tank 404 can be set according to actual needs, and no limitation is made thereto.

[0048] The molten salt is a medium used for storing and releasing heat in the energy storage device 4, and the specific type of the molten salt can be set according to actual needs, and no limitation is made thereto.

[0049] As shown in FIGS. Figure 1 and Figure 2 In some embodiments, the heat releasing pipe 405 includes a first spiral pipe 4051 and a second spiral pipe 4052, the first spiral pipe 4051 is arranged on the inner wall of the pyrolysis chamber 1, the liquid inlet end of the first spiral pipe 4051 is connected with the liquid outlet end of the high-temperature molten salt tank 404, and the liquid outlet end of the first spiral pipe 4051 is connected with the liquid inlet end of the low-temperature molten salt tank 403, the second spiral pipe 4052 is arranged on the inner wall of the pyrolysis chamber 1, the liquid inlet end of the second spiral pipe 4052 is connected with the liquid outlet end of the high-temperature molten salt tank 404, and the liquid outlet end of the second spiral pipe 4052 is connected with the liquid inlet end of the low-temperature molten salt tank 403, wherein the flow direction of the molten salt in the first spiral pipe 4051 is opposite to that in the second spiral pipe 4052.

[0050] It can be understood that when the high-temperature molten salt passes through the first spiral pipe 4051 and the second spiral pipe 4052, the heat in the high-temperature molten salt is conducted from the first spiral pipe 4051 and the second spiral pipe 4052 to the pyrolysis chamber 1 to heat the solid waste in the pyrolysis chamber 1, thereby realizing the pyrolysis reaction of the solid waste.

[0051] The spiral structure of the first spiral pipe 4051 and the second spiral pipe 4052 effectively increases the length of the heat releasing pipe 405 in the pyrolysis chamber 1, thereby increasing the contact area of the heat releasing pipe 405 with the solid waste in the pyrolysis chamber 1, and further improving the heating efficiency of the heat releasing pipe 405 on the solid waste, and at the same time, the spiral structure also makes the distribution of the heat releasing pipe 405 in the pyrolysis chamber 1 more uniform, thereby effectively improving the heating quality of the heat releasing pipe 405 on the solid waste.

[0052] When the high-temperature molten salt passes through the first spiral pipe 4051 and the second spiral pipe 4052, the solid waste in the pyrolysis chamber 1 continuously absorbs the heat of the high-temperature molten salt, so that the temperature difference between the liquid inlet end and the liquid outlet end of the first spiral pipe 4051 and the temperature difference between the liquid inlet end and the liquid outlet end of the second spiral pipe 4052 are both large, therefore, the flow direction of the molten salt in the first spiral pipe 4051 is opposite to that in the second spiral pipe 4052, so that the heating of the solid waste in the pyrolysis chamber 1 is more uniform, thereby realizing the efficient pyrolysis of the solid waste.

[0053] It should be noted that the specific arrangement of the first spiral tube 4051 and the second spiral tube 4052 can be set according to actual needs, and there are no restrictions on this. For example, the first spiral tube 4051 and the second spiral tube 4052 are set on the inner wall of the pyrolysis chamber 1 by welding, bolting or other means, and the central axis of the first spiral tube 4051 and the second spiral tube 4052 coincides with the central axis of the pyrolysis chamber 1.

[0054] In this configuration, the inlet end of the first spiral tube 4051 can be close to the top of the pyrolysis chamber 1, and the outlet end of the first spiral tube 4051 is close to the bottom of the pyrolysis chamber 1. The inlet end of the second spiral tube 4052 is close to the bottom of the pyrolysis chamber 1, and the outlet end of the second spiral tube 4052 is close to the top of the pyrolysis chamber 1. Conversely, the inlet end of the first spiral tube 4051 can also be close to the bottom of the pyrolysis chamber 1, and the outlet end of the first spiral tube 4051 is close to the top of the pyrolysis chamber 1. The inlet end of the second spiral tube 4052 is close to the top of the pyrolysis chamber 1, and the outlet end of the second spiral tube 4052 is close to the bottom of the pyrolysis chamber 1.

[0055] like Figure 2 As shown, in some embodiments, the energy storage device 4 further includes an electric heater 406 and a temperature sensor 407. The liquid inlet of the electric heater 406 is connected to the liquid outlet of the cold side passage of the first heat exchanger 5 and the liquid outlet of the cold side passage of the second heat exchanger 6. The liquid outlet of the electric heater 406 is connected to the liquid inlet of the high-temperature molten salt tank 404. The detection end of the temperature sensor 407 is disposed inside the high-temperature molten salt tank 404. The temperature sensor 407 is used to detect the temperature inside the high-temperature molten salt tank 404.

[0056] Understandably, the temperature sensor 407 detects the temperature of the molten salt in the high-temperature molten salt tank 404. When the temperature of the molten salt in the high-temperature molten salt tank 404 is low, the molten salt is heated by the electric heater 406 so that the temperature of the molten salt in the high-temperature molten salt tank 404 can meet the pyrolysis requirements of the solid waste. Thus, through the setting of the temperature sensor 407 and the electric heater 406, the molten salt in the high-temperature molten salt tank 404 can always maintain a high temperature, thereby ensuring stable heating of the solid waste in the pyrolysis chamber 1.

[0057] It should be noted that the temperature sensor 407 is used to detect the temperature of the molten salt in the high-temperature molten salt tank 404. The specific type of temperature sensor 407 can be set according to actual needs and there are no restrictions on it.

[0058] The electric heater 406 is used to convert electrical energy into heat energy to heat the molten salt passing through the electric heater 406. The specific type of electric heater 406 can be set according to actual needs and is not limited thereto. For example, the electric heater 406 may include a heating tank and a heating tube. The heating tube is set in the heating tank. The liquid inlet end of the heating tank is connected to the liquid outlet end of the cold side passage of the first heat exchanger 5 and the liquid outlet end of the cold side passage of the second heat exchanger 6. The liquid outlet end of the heating tank is connected to the liquid inlet end of the high temperature molten salt tank 404.

[0059] Temperature monitoring in the high-temperature molten salt tank 404 can be achieved through a controller. For example, the signal output terminal of the temperature sensor 407 is connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the signal input terminal of the electric heater 406. The controller has a set temperature threshold. When the temperature value output by the temperature sensor 407 is lower than the temperature threshold, the controller controls the electric heater 406 to turn on to heat the molten salt until the temperature in the high-temperature molten salt tank 404 is not lower than the temperature threshold. The specific value of the temperature threshold can be set according to actual needs and is not limited thereto.

[0060] like Figure 2 As shown, in some embodiments, the energy storage device 4 further includes a first pump body 408 and a second pump body 409. The first pump body 408 is disposed between the liquid outlet of the low-temperature molten salt tank 403 and the liquid inlet of the cold side passage of the first heat exchanger 5 and the liquid inlet of the cold side passage of the second heat exchanger 6. The liquid inlet of the first pump body 408 is connected to the liquid outlet of the low-temperature molten salt tank 403 and the liquid outlet of the first pump body 408 is connected to the liquid inlet of the cold side passage of the first heat exchanger 5 and the liquid inlet of the cold side passage of the second heat exchanger 6. The second pump body 409 is disposed between the liquid inlet of the heat release pipe 405 and the liquid outlet of the high-temperature molten salt tank 404. The liquid inlet of the second pump body 409 is connected to the liquid outlet of the high-temperature molten salt tank 404 and the liquid outlet of the second pump body 409 is connected to the liquid inlet of the heat release pipe 405.

[0061] Understandably, the first pump 408 pressurizes and transports the low-temperature molten salt in the low-temperature molten salt tank 403, so that the low-temperature molten salt enters the high-temperature molten salt tank 404 after passing through the cold side passage of the first heat exchanger 5 and the cold side passage of the second heat exchanger 6. The second pump 409 pressurizes and transports the high-temperature molten salt in the high-temperature molten salt tank 404, so that the high-temperature molten salt enters the low-temperature molten salt tank 403 after passing through the heat release pipe 405. Thus, through the arrangement of the first pump 408 and the second pump 409, the molten salt can be stably circulated between the low-temperature molten salt tank 403 and the high-temperature molten salt tank 404, thereby enabling the heat in the gaseous products and solid products to be fully used for heating the pyrolysis chamber 1.

[0062] It should be noted that the specific types of the first pump body 408 and the second pump body 409 can be set according to actual needs, and there are no restrictions on this.

[0063] like Figure 1 As shown, in some embodiments, the pyrolysis system further includes a housing 7, a partition 8, a crushing shaft 12, a plurality of first blades 13, and a drive device 14. The partition 8 is disposed inside the housing 7 and divides the pyrolysis chamber 1 into a crushing chamber 9 and a pyrolysis chamber 1. The crushing chamber 9 is located above the pyrolysis chamber 1, and a feed pipe 10 is provided on the top of the crushing chamber 9. A plurality of leakage holes 11 are provided on the partition 8. The crushing shaft 12 is rotatably disposed inside the housing 7. A plurality of first blades 13 are sequentially disposed on the crushing shaft 12 along the circumference of the crushing shaft 12, and the first blades 13 are located inside the crushing chamber 9. The drive device 14 is disposed on the housing 7 and is connected to the crushing shaft 12 in a driving manner.

[0064] It is understood that the drive device 14 drives the crushing shaft 12 to rotate, and the crushing shaft 12 drives the multiple first blades 13 on it to rotate synchronously. The multiple first blades 13 rotate in the crushing chamber 9 to cut and crush the solid waste in the crushing chamber 9. The crushed solid waste enters the pyrolysis chamber 1 through the leakage hole 11 to carry out the pyrolysis reaction.

[0065] The solid waste is crushed before entering the pyrolysis chamber 1 by means of components such as the crushing shaft 12 and multiple first blades 13, thereby reducing the volume of clumps and other objects in the solid waste, increasing the heat-receiving area of ​​the solid waste, and thus improving the pyrolysis efficiency of the solid waste in the pyrolysis chamber 1. At the same time, the crushing structure and the pyrolysis structure of the solid waste are integrated in the shell 7, making the overall structure simpler and more efficient, and effectively reducing the pyrolysis cost of solid waste.

[0066] It should be noted that the first blade 13 is used to cut and crush solid waste. The specific type and quantity of the first blade 13 can be set according to actual needs and there are no restrictions on this.

[0067] The way the first blade 13 is set on the crushing shaft 12 can be set according to actual needs, and there is no restriction on it. For example, the first blade 13 can be set on the crushing shaft 12 by welding, bolting or other methods.

[0068] The feed pipe 10 is used for solid waste to enter the crushing chamber 9. The specific type of feed pipe 10 can be set according to actual needs and is not limited thereto. Since the feed pipe 10 is located at the top of the crushing chamber 9, equipment such as bucket elevators and belt conveyors can be used to feed solid waste into the feed pipe 10.

[0069] The orifice 11 is used for the passage of crushed solid waste. The specific size and number of the orifice 11 can be set according to actual needs and are not limited thereto.

[0070] The driving device 14 is used to drive the rotation of the crushing shaft 12, and the specific type of the driving device 14 can be set according to actual needs, which is not limited. For example, the driving device 14 can include a driving motor and a speed reducer. The driving motor is arranged on the shell 7, the speed reducer is arranged on the shell 7, the output shaft of the driving motor is connected with the input shaft of the speed reducer through a shaft coupling, and the output shaft of the speed reducer is connected with the crushing shaft 12 through a shaft coupling. Thus, under the driving of the driving motor, the rotation of the crushing shaft 12 is realized, and the rotation of the plurality of first blades 13 is realized.

[0071] As shown in Figure 1 some embodiments, the pyrolysis system further comprises a plurality of second blades 15, which are sequentially arranged on the inner wall of the crushing chamber 9 along the circumference of the crushing shaft 12.

[0072] It can be understood that when the first blade 13 cuts the solid waste, the solid waste moves in the crushing chamber 9 while being cut due to the continuous rotation of the first blade 13. Since the second blade 15 is arranged on the inner wall of the crushing chamber 9, the solid waste moves relative to the second blade 15, thereby realizing the cutting and crushing of the solid waste by the second blade 15. Thus, through the cooperation of the first blade 13 and the second blade 15, the solid waste is efficiently crushed, and the pyrolysis processing efficiency of the solid waste is effectively improved.

[0073] It should be noted that the second blade 15 is used to cut and crush the solid waste, and the specific type and specific number of the second blade 15 can be set according to actual needs, which is not limited.

[0074] The arrangement mode of the second blade 15 on the inner wall of the crushing chamber 9 can be set according to actual needs, which is not limited. For example, the second blade 15 can be arranged on the inner wall of the crushing chamber 9 by welding, bolt fixing or the like.

[0075] As shown in Figure 1 some embodiments, the pyrolysis system further comprises a first spiral blade 16, which is arranged on the crushing shaft 12 and located in the pyrolysis chamber 1. A material falling channel 17 is arranged between the outer circumferential surface of the first spiral blade 16 and the inner wall of the pyrolysis chamber 1, and the first spiral blade 16 spirally advances from the bottom of the pyrolysis chamber 1 to the top of the pyrolysis chamber 1.

[0076] It can be understood that the driving device 14 drives the rotation of the crushing shaft 12, the crushing shaft 12 drives the rotation of the first blade 13 and the first helical blade 16 on the crushing shaft 12, the first helical blade 16 drives the solid waste to move from the bottom of the pyrolysis chamber 1 to the top of the pyrolysis chamber 1, and due to the arrangement of the material falling channel 17, the solid waste at the top of the pyrolysis chamber 1 can fall from the material falling channel 17 to the bottom of the pyrolysis chamber 1 again, thereby realizing the up-down circulating stirring of the solid waste in the pyrolysis chamber 1 under the driving of the first helical blade 16, so that the solid waste in the pyrolysis chamber 1 can be uniformly heated, and the pyrolysis processing efficiency of the solid waste is effectively improved.

[0077] The crushing shaft 12 drives the rotation of the first blade 13 and the first helical blade 16 at the same time, which simplifies the overall structure while realizing the crushing and stirring of the solid waste, and effectively reduces the pyrolysis cost of the solid waste.

[0078] It should be noted that the specific size of the material falling channel 17 can be set according to actual needs, and the size of the material falling channel 17 should be set to ensure that the solid waste can smoothly pass through the material falling channel 17 to avoid problems such as material jamming.

[0079] The first helical blade 16 is used for helical conveying and stirring of the solid waste, and the specific type of the first helical blade 16 can be set according to actual needs.

[0080] The setting mode of the first helical blade 16 on the crushing shaft 12 can be set according to actual needs, and the setting mode of the first helical blade 16 on the crushing shaft 12 is not limited, for example, the first helical blade 16 can be fixed on the crushing shaft 12 by welding, bolt fixing or the like, and the central axis of the first helical blade 16 coincides with the central axis of the crushing shaft 12.

[0081] The setting mode of the crushing shaft 12 in the housing 7 can be set according to actual needs, and the setting mode of the crushing shaft 12 in the housing 7 is not limited, for example, the central axis of the crushing shaft 12 coincides with the central axis of the housing 7, the upper end of the crushing shaft 12 is rotatably connected to the top of the housing 7 through a bearing, the middle part of the crushing shaft 12 is rotatably connected to the partition plate 8 through a bearing, and the lower end of the crushing shaft 12 is not in contact with the bottom of the housing 7 to leave a discharging space for the discharging pipeline 3.

[0082] As shown in FIG. 1, Figure 1 In some embodiments, the pyrolysis system further comprises a second helical blade 18, the second helical blade 18 is arranged on the crushing shaft 12, and the second helical blade 18 is located in the pyrolysis chamber 1, the second helical blade 18 is located above the first helical blade 16, and the first helical blade 16 spirally advances from the top of the pyrolysis chamber 1 to the bottom of the pyrolysis chamber 1.

[0083] It can be understood that the driving device 14 drives the rotation of the crushing shaft 12, and the first blade 13 and the first helical blade 16 on the crushing shaft 12 are driven to rotate, and the second helical blade 18 on the crushing shaft 12 is also driven to rotate, and the second helical blade 18 drives the solid waste to move from the top of the pyrolysis chamber 1 to the bottom of the pyrolysis chamber 1, thereby avoiding the accumulation of solid waste at the partition plate 8 due to the conveying of the first helical blade 16, ensuring that the solid waste in the crushing chamber 9 can smoothly enter the pyrolysis chamber 1, and thereby improving the pyrolysis processing efficiency of the solid waste.

[0084] The crushing shaft 12 simultaneously drives the rotation of the first blade 13, the first helical blade 16 and the second helical blade 18, which not only achieves the crushing and stirring of the solid waste, but also simplifies the overall structure, thereby effectively reducing the pyrolysis cost of the solid waste.

[0085] It should be noted that the second helical blade 18 is used for helical conveying and stirring of the solid waste, and the specific type of the second helical blade 18 can be set according to actual needs, and the type of the second helical blade 18 is not limited. Since the conveying direction of the first helical blade 16 is opposite to the conveying direction of the second helical blade 18, and the second helical blade 18 is used to avoid the accumulation of solid waste at the partition plate 8, the length of the second helical blade 18 can be much smaller than the length of the first helical blade 16.

[0086] The setting mode of the second helical blade 18 on the crushing shaft 12 can be set according to actual needs, and the setting mode of the second helical blade 18 on the crushing shaft 12 is not limited. For example, the second helical blade 18 can be fixed on the crushing shaft 12 by welding, bolt fixing or the like, and the center axis of the second helical blade 18 coincides with the center axis of the crushing shaft 12.

[0087] As shown in FIG. 1, Figure 1 In some embodiments, the shell 7 includes an inner shell 701 and an outer shell 702, the partition plate 8 is arranged in the inner shell 701, the partition plate 8 divides the inner shell 701 into the crushing chamber 9 and the pyrolysis chamber 1, the crushing shaft 12 is rotatably arranged in the inner shell 701, the outer shell 702 is sleeved on the inner shell 701, a vacuum cavity 703 is arranged between the outer shell 702 and the inner shell 701, and the driving device 14 is arranged on the outer shell 702.

[0088] It can be understood that the arrangement of the inner shell 701 and the outer shell 702 forms a double-layer structure of the shell 7, which not only has higher structural strength, but also ensures stable pyrolysis of the solid waste. The formed vacuum cavity 703 can effectively isolate heat, thereby reducing the loss of heat in the pyrolysis chamber 1 and ensuring efficient pyrolysis of the solid waste in the pyrolysis chamber 1.

[0089] It should be noted that the forming mode of the vacuum cavity 703 can be set according to actual needs, and the forming mode of the vacuum cavity 703 is not limited, for example, the shell 702 is sleeved on the inner shell 701, then the cavity between the shell 702 and the inner shell 701 is sealed, and then the cavity is vacuumized, so that the cavity forms the vacuum cavity 703. The vacuum value in the vacuum cavity 703 can be set according to actual needs, and the vacuum value in the vacuum cavity 703 is not limited.

[0090] The specific types of the inner shell 701 and the shell 702 can be set according to actual needs, and the specific types of the inner shell 701 and the shell 702 are not limited, for example, the inner shell 701 and the shell 702 can both be a near-cylindrical structure, and the ports of the shell 702 and the inner shell 701 are both covered by the cover plate after the shell 702 is sleeved on the inner shell 701. When the crushing shaft 12 is arranged in the shell 7, the upper end of the crushing shaft 12 is connected in transmission with the driving device 14 after penetrating out of the cover plate.

[0091] The setting mode of the partition plate 8 in the inner shell 701 can be set according to actual needs, and the setting mode of the partition plate 8 in the inner shell 701 is not limited, for example, the partition plate 8 can be arranged in the inner shell 701 by welding, bolt fixing, clamping, or the like.

[0092] In the description of the present disclosure, the terms "first", "second", and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0093] Any process or method descriptions in flow charts or otherwise described herein can be understood as representing code modules, segments, or portions of code that include one or more executable instructions for performing specific logic functions or steps in the process, and the various embodiments of the present disclosure include additional implementations in which the order of execution is not necessarily the same as the order shown or discussed, including the implementation of functions according to the functions involved, in a substantially simultaneous manner, or in reverse order, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0094] In the description of the present disclosure, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0095] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and it is not construed that the present disclosure is limited to the above-described embodiments, and a person of ordinary skill in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A pyrolysis system for solid waste, characterized by, The pyrolysis system comprises: a pyrolysis chamber, a top of the pyrolysis chamber is provided with an exhaust pipeline, a bottom of the pyrolysis chamber is provided with a discharge pipeline; a heat storage device, the heat storage device comprises: an endothermic passage and an exothermic passage, the exothermic passage is arranged in the pyrolysis chamber; a first heat exchanger, a hot side passage of the first heat exchanger is connected in series on the exhaust pipeline, a cold side passage of the first heat exchanger is connected in series on the endothermic passage; a second heat exchanger, a hot side passage of the second heat exchanger is connected in series on the discharge pipeline, a cold side passage of the second heat exchanger is connected in series on the endothermic passage; wherein the heat storage device comprises: a low-temperature molten salt tank, a high-temperature molten salt tank and an exothermic pipe, an outlet end of the low-temperature molten salt tank is connected with an inlet end of the cold side passage of the first heat exchanger and an inlet end of the cold side passage of the second heat exchanger, an inlet end of the high-temperature molten salt tank is connected with an outlet end of the cold side passage of the first heat exchanger and an outlet end of the cold side passage of the second heat exchanger, the exothermic pipe is arranged in the pyrolysis chamber, an inlet end of the exothermic pipe is connected with the outlet end of the high-temperature molten salt tank, and an outlet end of the exothermic pipe is connected with the inlet end of the low-temperature molten salt tank; the exothermic pipe comprises: a first spiral pipe and a second spiral pipe, the first spiral pipe is arranged on an inner wall of the pyrolysis chamber, an inlet end of the first spiral pipe is connected with the outlet end of the high-temperature molten salt tank, and an outlet end of the first spiral pipe is connected with the inlet end of the low-temperature molten salt tank, the second spiral pipe is arranged on the inner wall of the pyrolysis chamber, an inlet end of the second spiral pipe is connected with the outlet end of the high-temperature molten salt tank, and an outlet end of the second spiral pipe is connected with the inlet end of the low-temperature molten salt tank, wherein a flow direction of the molten salt in the first spiral pipe is opposite to a flow direction of the molten salt in the second spiral pipe; the pyrolysis system further comprises: a housing, a partition plate, a crushing shaft, a plurality of first blades and a driving device, the partition plate is arranged in the housing, the partition plate divides the pyrolysis chamber into a crushing chamber and the pyrolysis chamber, the crushing chamber is located above the pyrolysis chamber, a top of the crushing chamber is provided with a feeding pipeline, a plurality of leakage holes are arranged on the partition plate, the crushing shaft is rotationally arranged in the housing, a plurality of the first blades are sequentially arranged on the crushing shaft along a circumferential direction of the crushing shaft, and the first blades are located in the crushing chamber, the driving device is arranged on the housing, and the driving device is in transmission connection with the crushing shaft; the pyrolysis system further comprises: a first spiral blade, the first spiral blade is arranged on the crushing shaft, and the first spiral blade is located in the pyrolysis chamber, a falling material passage is arranged between an outer circumferential surface of the first spiral blade and an inner wall of the pyrolysis chamber, and the first spiral blade spirally advances in a direction from the bottom of the pyrolysis chamber to the top of the pyrolysis chamber; the pyrolysis system further comprises: a second spiral blade, the second spiral blade is arranged on the crushing shaft, and the second spiral blade is located in the pyrolysis chamber, the second spiral blade is located above the first spiral blade, and the second spiral blade spirally advances in a direction from the top of the pyrolysis chamber to the bottom of the pyrolysis chamber.

2. The system for pyrolyzing solid waste of claim 1, wherein The energy storage device further comprises: an electric heater, a liquid inlet end of the electric heater being connected with a liquid outlet end of the cold side passage of the first heat exchanger and a liquid outlet end of the cold side passage of the second heat exchanger, and a liquid outlet end of the electric heater being connected with a liquid inlet end of the high-temperature molten salt tank; a temperature sensor, a detection end of the temperature sensor being arranged in the high-temperature molten salt tank, and the temperature sensor being used for detecting a temperature in the high-temperature molten salt tank.

3. The system for pyrolyzing solid waste of claim 1, wherein The energy storage device further comprises: a first pump body, the first pump body being arranged between a liquid outlet end of the low-temperature molten salt tank and liquid inlet ends of the cold side passages of the first heat exchanger and the second heat exchanger, a liquid inlet end of the first pump body being connected with the liquid outlet end of the low-temperature molten salt tank, and a liquid outlet end of the first pump body being connected with the liquid inlet ends of the cold side passages of the first heat exchanger and the second heat exchanger; a second pump body, the second pump body being arranged between a liquid inlet end of the heat dissipation pipe and a liquid outlet end of the high-temperature molten salt tank, a liquid inlet end of the second pump body being connected with the liquid outlet end of the high-temperature molten salt tank, and a liquid outlet end of the second pump body being connected with the liquid inlet end of the heat dissipation pipe.

4. The system for pyrolyzing solid waste of claim 1, wherein The pyrolysis system further comprises: a plurality of second blades, the plurality of second blades being sequentially arranged on the inner wall of the crushing chamber along the circumference of the crushing shaft.

5. The system for pyrolyzing solid waste of claim 1, wherein The shell comprises: an inner shell, the partition plate being arranged in the inner shell, the partition plate dividing the inner shell into the crushing chamber and the pyrolysis chamber, and the crushing shaft being rotationally arranged in the inner shell; an outer shell, the outer shell being sleeved on the inner shell, and a vacuum cavity being arranged between the outer shell and the inner shell, and the driving device being arranged on the outer shell.

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