Drying pyrolysis equipment and method

Abstract

The invention discloses drying pyrolysis equipment and method, and relates to the technical field of pyrolysis, the drying pyrolysis equipment comprises a plurality of pyrolysis pipelines, a feeding device, a gas collecting device, a discharging device, a first cooling device, a heat supply device and a second cooling device, and the plurality of pyrolysis pipelines are vertically arranged; a plurality of feeding devices are arranged, the upper section of each pyrolysis pipeline is provided with one feeding device, and the feeding devices are communicated with the pyrolysis pipelines; the gas collecting device is arranged at the upper section of the pyrolysis pipeline and is communicated with the pyrolysis pipeline; the discharging device is arranged at the lower section of the pyrolysis pipeline and is communicated with the pyrolysis pipeline; a first cooling device, a heat supply device and a second cooling device are sequentially arranged from the upper section to the lower section of the pyrolysis pipeline, the gas collection device is located above the first cooling device, and the discharging device is located below the second cooling device. According to the drying pyrolysis equipment and method, maintenance can be conducted without shutdown, and operation is more stable.

Description

Technical Field

[0001] The present invention relates to the field of pyrolysis technology, and in particular to a drying pyrolysis device and method. Background Art

[0002] Dry pyrolysis equipment refers to equipment that pyrolyzes organic matter in materials through high-temperature heating to produce gas, solid and other products. Its working principle is mainly based on chemical reactions under high temperature conditions, which causes materials to undergo pyrolysis reactions under oxygen-deficient or oxygen-free conditions to generate small molecular gases and solid residues.

[0003] Current drying pyrolysis equipment includes horizontal rotary kilns, horizontal spiral propeller drying pyrolysis equipment, vertical furnaces, etc. Most of them are one-way single-channel equipment. Once the main engine stops, the entire system will stop immediately, and the equipment cannot be inspected and maintained online, which reduces production efficiency and directly affects the factory's production and operation plans. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a drying pyrolysis device that can be maintained without stopping the machine and has more stable operation.

[0005] The invention also provides a drying pyrolysis method.

[0006] According to the first aspect of the present invention, the drying pyrolysis equipment comprises a pyrolysis pipeline, wherein the number of the pyrolysis pipelines is multiple, and the multiple pyrolysis pipelines are vertically arranged; A feeding device, wherein the number of the feeding devices is multiple, and the upper section of each of the pyrolysis pipelines is provided with the feeding device, and the feeding device is connected to the pyrolysis pipeline; A gas collecting device, the gas collecting device is arranged at the upper section of the pyrolysis pipeline, and the gas collecting device is communicated with the pyrolysis pipeline; A discharge device, the discharge device is arranged at the lower section of the pyrolysis pipeline, and the discharge device is communicated with the pyrolysis pipeline; A first cooling device, a heat supply device and a second cooling device are sequentially provided along the upper section to the lower section of the pyrolysis pipeline, and the gas collecting device is located above the first cooling device, and the discharging device is located below the second cooling device.

[0007] According to the dry pyrolysis equipment of the embodiment of the present invention, there are at least the following beneficial effects: the dry pyrolysis equipment is arranged with a plurality of pyrolysis pipelines, the plurality of pyrolysis pipelines are independent of each other, and each pyrolysis pipeline has an independent feeding device, so that the failure risk is shared, so that when a single pyrolysis pipeline needs to be repaired, it will not affect the operation of the remaining pyrolysis pipelines; the first cooling device is arranged in the upper section of the pyrolysis pipeline, for cooling the gas generated by pyrolysis, and the first cooling device is also close to the feeding device. If the feeding device is blocked and needs to be repaired, it can also avoid the high temperature causing harm to the maintenance personnel; the second cooling device is arranged in the lower section of the pyrolysis pipeline, for cooling the non-gaseous products after pyrolysis, and the second cooling device is also close to the discharging device. If the discharging device is blocked and needs to be repaired, it can also avoid the high temperature causing harm to the maintenance personnel.

[0008] According to some embodiments of the present invention, the feeding device and the gas collecting device are both connected to the side wall of the pyrolysis pipe, and the port of the upper section of the pyrolysis pipe is provided with a clearing device, which extends into the interior of the pyrolysis pipe and can move axially along the pyrolysis pipe, and the clearing device is used to scrape the inner wall of the pyrolysis pipe.

[0009] According to some embodiments of the present invention, the dredging device includes a driving component and a dredging part. The driving component is mounted on the pyrolysis pipe, and the dredging part is arranged inside the pyrolysis pipe. The dredging part is connected to the driving component, and the driving component is used to drive the dredging part to move axially along the pyrolysis pipe.

[0010] According to some embodiments of the present invention, the dredging part includes a push rod, which is transmission-connected to the driving assembly, the push rod is coaxially arranged with the pyrolysis pipe, and the driving assembly is used to push the push rod to move axially along the pyrolysis pipe.

[0011] According to some embodiments of the present invention, a push plate is provided at one end of the push rod away from the driving assembly, the push plate is perpendicular to the push rod, and the outer diameter of the push rod is smaller than the diameter of the push plate.

[0012] According to some embodiments of the present invention, the dredging portion includes a first spiral, which is transmission-connected to the driving assembly, and the first spiral is coaxially arranged with the pyrolysis pipe. The driving assembly is used to drive the first spiral to rotate circumferentially along the pyrolysis pipe, and to push the first spiral to move axially along the pyrolysis pipe.

[0013] According to some embodiments of the present invention, the feeding device includes a feed pipe, a first push pipe and a second spiral, the first push pipe is connected to the pyrolysis pipe, the feed pipe is vertically arranged, the feed pipe is arranged on the side wall of the first push pipe and is connected to the first push pipe, the second spiral is arranged on the first push pipe and is coaxial with the first push pipe, and the second spiral is connected to the first drive motor.

[0014] According to some embodiments of the present invention, the gas collecting device includes a manifold and a plurality of branch pipes, each of the pyrolysis pipelines is connected to one of the branch pipes, and a plurality of the branch pipes are connected to the manifold.

[0015] According to some embodiments of the present invention, the discharging device includes a discharging pipe and a third spiral, the third spiral is arranged at the end of the lower section of the pyrolysis pipe, and the third spiral extends into the interior of the pyrolysis pipe, the discharging pipe is arranged on the side wall of the lower section of the pyrolysis pipe, the discharging pipe is connected to the pyrolysis pipe, the spiral blades of the third spiral start from one end extending into the interior of the pyrolysis pipe and stop at the junction of the discharging pipe and the pyrolysis pipe, and the third spiral is connected to a second drive motor.

[0016] According to some embodiments of the present invention, the heating device includes a plurality of heating pipes, wherein the heating pipes are arranged perpendicularly to the pyrolysis pipe, and the pyrolysis pipe passes through the heating pipe, and the plurality of heating pipes are arranged along the axial direction of the pyrolysis pipe, and ends of one side of two adjacent heating pipes form a connecting portion, and along the axial direction of the pyrolysis pipe, the plurality of connecting portions are alternately distributed, and the heating pipe is used to pass heat medium.

[0017] According to the drying pyrolysis equipment of the second embodiment of the present invention, the above-mentioned drying pyrolysis equipment is used to dry and pyrolyze the material through the following steps: Step S1, putting the material into a feeding device, and quantitatively transporting the material to a pyrolysis pipeline through the feeding device; Step S2, the heating device heats the material to complete drying and pyrolysis, the solid product of pyrolysis moves toward the bottom of the pyrolysis pipeline, and the gas product of pyrolysis moves toward the top of the pyrolysis pipeline; Step S3, the first cooling device cools the gaseous product, and the gaseous product is collected from the gas collecting device, and the second cooling device cools the solid product, and the solid product is collected from the discharging device.

[0018] The dry pyrolysis method according to the embodiment of the present invention has at least the following beneficial effects: the first cooling device is used to cool the gas generated by pyrolysis; the second cooling device is used to cool the non-gaseous products after pyrolysis.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic structural diagram of a drying and pyrolysis device according to an embodiment of the present invention; Figure 2 A side view of a drying pyrolysis device according to an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a dredging device according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of the upper section of the pyrolysis pipeline according to an embodiment of the present invention; Figure 5 It is a schematic structural diagram of the lower section of the pyrolysis pipeline according to an embodiment of the present invention.

[0021] Figure Number: Pyrolysis pipeline 100, feeding device 200, feeding pipe 210, first pushing pipe 220, second spiral 230, gas collecting device 300, confluence pipe 310, branch pipe 320, discharging device 400, discharging pipe 410, third spiral 420, first cooling device 500, heating device 600, heating pipeline 610, second cooling device 700, dredging device 800, driving assembly 810, dredging part 820, push rod 821, push plate 822. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Dry pyrolysis equipment refers to equipment that pyrolyzes organic matter in materials through high-temperature heating to produce gas, solid and other products. Its working principle is mainly based on chemical reactions under high temperature conditions, which causes materials to undergo pyrolysis reactions under oxygen-deficient or oxygen-free conditions to generate small molecular gases and solid residues.

[0027] The current drying pyrolysis equipment includes horizontal rotary kilns, horizontal spiral propulsion drying pyrolysis equipment, vertical furnaces, etc. Most of them are one-way single-channel equipment. Once the main engine stops, the entire system will stop immediately, and the equipment cannot be repaired and maintained online, which reduces production efficiency and directly affects the factory's production and operation plans. Most failures of drying pyrolysis equipment occur at the feed and discharge points. When the feed or discharge structure of the above-mentioned one-way single-channel equipment fails, it will not be able to continue working.

[0028] Reference Figure 1 and Figure 2 As shown, a drying pyrolysis device according to an embodiment of the present invention includes a pyrolysis pipeline 100, a feeding device 200, a gas collecting device 300, a discharging device 400, a first cooling device 500, a heat supply device 600 and a second cooling device 700.

[0029] There are multiple pyrolysis pipes 100 , which are all arranged vertically; there are multiple feeding devices 200 , which are each provided with a feeding device 200 at the upper section of each pyrolysis pipe 100 , and the feeding device 200 is connected to the pyrolysis pipe 100 .

[0030] The gas collecting device 300 is disposed at the upper section of the pyrolysis pipeline 100 , and the gas collecting device 300 is communicated with the pyrolysis pipeline 100 ; the discharging device 400 is disposed at the lower section of the pyrolysis pipeline 100 , and the discharging device 400 is communicated with the pyrolysis pipeline 100 .

[0031] A first cooling device 500 , a heat supply device 600 and a second cooling device 700 are sequentially provided along the upper section to the lower section of the pyrolysis pipeline 100 , and the gas collecting device 300 is located above the first cooling device 500 , and the discharging device 400 is located below the second cooling device 700 .

[0032] The material is put into the feeding device 200, and the feeding device 200 quantitatively feeds the material into the pyrolysis pipe 100. The pyrolysis pipe 100 is arranged vertically, and the material falls naturally in the pyrolysis pipe 100 due to gravity. In the process of the material falling, it passes through the first cooling device 500 and the heating device 600 in sequence. The function of the first cooling device 500 is to cool the gas generated by pyrolysis to a lower temperature, and the material is also put into the pyrolysis pipe 100 at room temperature, so the effect of the first cooling device 500 on the material can be ignored. When the material continues to move downward, it passes through the heating device 600, and the heating device 600 continues to heat and raise the temperature of the material to reach the pyrolysis temperature for pyrolysis reaction. The gas generated after the pyrolysis of the material moves upward, and the gas will pass through the first cooling device 500 to reduce the temperature to a lower temperature, and then be collected and utilized by the gas collecting device 300. After the gas produced by pyrolysis is processed by cooling, condensing, separating and other processes, it can form a variety of products such as non-condensable gas, pyrolysis oil, pyrolysis water, etc. Each product can be reused, with high economic benefits. The non-gaseous products produced after pyrolysis will continue to move down along the pyrolysis pipeline 100, be cooled to a lower temperature when passing through the second cooling device 700, and finally be collected by the discharging device 400.

[0033] It should be understood that when the first cooling device 500 cools the gas, the cooling temperature is controlled to be around 100° C. or above to ensure that water vapor in the gas does not condense in the device.

[0034] It should be understood that after the material accumulates to a certain extent in the pyrolysis pipe 100, the feeding device 200 is required to squeeze the material into the pyrolysis pipe 100 to further push the material in the pyrolysis pipe 100 to move downward, so the feeding device 200 preferably uses a spiral feeding method.

[0035] When one of the pyrolysis pipes 100 fails or needs to be repaired for other reasons, there is no need to stop the operation of the entire drying pyrolysis equipment, that is, the remaining pyrolysis pipes 100 can continue to perform pyrolysis reactions. It is only necessary to stop the feeding device 200 of the pyrolysis pipe 100 to be repaired, and the pyrolysis pipe 100 can be repaired. It should be understood that the passage from the pyrolysis pipe 100 to the gas collecting device 300 can be blocked, and the passage to the discharging device 400 can also be blocked.

[0036] It should be understood that the failure of the pyrolysis pipeline 100 generally includes feed blockage or discharge blockage. Feed blockage often occurs near the feed device 200, which is close to the first cooling device 500 and is located in the upper section of the pyrolysis pipeline 100. The first cooling device 500 can isolate the heat of the heating device 600 and reduce the damage caused by high temperature to maintenance personnel. Discharge blockage often occurs near the discharge device 400, which is close to the second cooling device 700 and is located in the lower section of the pyrolysis pipeline 100. The second cooling device 700 can also isolate the heat of the heating device 600 and reduce the damage caused by high temperature to maintenance personnel.

[0037] It can be understood that the feeding device 200 and the gas collecting device 300 are both connected to the side wall of the pyrolysis pipe 100, and the port of the upper section of the pyrolysis pipe 100 is provided with a clearing device 800, which extends into the interior of the pyrolysis pipe 100 and can move axially along the pyrolysis pipe 100. The clearing device 800 is used to scrape the inner wall of the pyrolysis pipe 100.

[0038] Furthermore, in order to reduce the risk of failure of the pyrolysis pipeline 100 and improve the stability of the operation of the dry pyrolysis equipment, the dredging device 800 is used to clean the blocked materials inside the pyrolysis pipeline 100 and break the coke attached to the inner wall of the pyrolysis pipeline 100. The port of the pyrolysis pipeline 100 where the dredging device 800 is set can be a push rod type or a spiral type, wherein the push rod type dredging device 800 only needs to move along the axial direction of the pyrolysis pipeline 100 to clean the blocked materials and break the coke on the inner wall.

[0039] Reference Figure 3 As shown, it can be understood that the dredging device 800 includes a driving component 810 and a dredging part 820. The driving component 810 is mounted on the pyrolysis pipe 100, and the dredging part 820 is arranged inside the pyrolysis pipe 100. The dredging part 820 is connected to the driving component 810, and the driving component 810 is used to drive the dredging part 820 to move axially along the pyrolysis pipe 100.

[0040] The driving assembly 810 may be a pneumatic driving assembly, and different driving assemblies 810 may be selected for different types of dredging portions 820 .

[0041] For example, it can be understood that the dredging part 820 includes a push rod 821, which is transmission-connected to the driving assembly 810, and the push rod 821 is coaxially arranged with the pyrolysis pipe 100, and the driving assembly 810 is used to push the push rod 821 to move axially along the pyrolysis pipe 100.

[0042] In the above structure, the driving assembly 810 can be a driving cylinder, and the driving cylinder drives the push rod 821 to perform a simple linear movement. The diameter of the push rod 821 is close to the inner diameter of the pyrolysis pipe 100, and it is ensured that the diameter of the push rod 821 is smaller than the inner diameter of the pyrolysis pipe 100. When the push rod 821 moves axially in the pyrolysis pipe 100, the end face of the push rod 821 pushes the blocked material, and the end edge can also scrape and remove the coke attached to the inner wall of the pyrolysis pipe 100. Of course, in order to minimize the scratching of the push rod 821 on the inner wall of the pyrolysis pipe 100, a guide bracket can also be set on the pyrolysis pipe 100 to ensure that the push rod 821 is coaxial with the pyrolysis pipe 100 and maintains axial movement. It should be understood that the scratching of the inner wall of the pyrolysis pipe 100 here refers to damaging the inner wall of the pyrolysis pipe 100, rather than just scraping the attachments on the inner wall.

[0043] It is understandable that a push plate 822 is provided at one end of the push rod 821 away from the driving assembly 810 , the push plate 822 is perpendicular to the push rod 821 , and the outer diameter of the push rod 821 is smaller than the diameter of the push plate 822 .

[0044] The push plate 822 is used to push the accumulated materials and scrape the inner wall of the pyrolysis pipe 100 to remove the coke. Therefore, the diameter of the push plate 822 is slightly smaller than the inner diameter of the pyrolysis pipe 100. At the same time, the outer diameter of the push rod 821 can be smaller than the diameter of the push plate 822 to reduce the mass of the push rod 821 as much as possible and reduce the burden of the drive assembly 810.

[0045] It can be understood that the dredging portion 820 includes a first spiral, which is transmission-connected to the driving assembly 810, and the first spiral is coaxially arranged with the pyrolysis pipe 100. The driving assembly 810 is used to drive the first spiral to rotate circumferentially along the pyrolysis pipe 100, and to push the first spiral to move axially along the pyrolysis pipe 100.

[0046] Another structure of the dredging part 820 is to use a spiral propulsion method. In this case, the driving assembly 810 is composed of at least two sets of driving parts, which respectively provide rotational drive and linear drive to realize the rotation of the first spiral and the axial movement in the pyrolysis pipe 100. It should be understood that when the dredging device 800 is not working, the default state of the dredging part 820 is to stay at the top to make room for the flow of pyrolysis gas.

[0047] Reference Figure 4As shown, it can be understood that when the feeding device 200 adopts a spiral feeding method, the feeding device 200 includes a feeding pipe 210, a first pushing pipe 220 and a second spiral 230. The first pushing pipe 220 is connected to the pyrolysis pipe 100, the feeding pipe 210 is vertically arranged, the feeding pipe 210 is arranged on the side wall of the first pushing pipe 220 and is connected to the first pushing pipe 220, the second spiral 230 is arranged on the first pushing pipe 220 and is coaxial with the first pushing pipe 220, and the second spiral 230 is connected to the first driving motor.

[0048] The first driving motor drives the second screw 230 to rotate, introduces the material in the feed pipe 210 into the first pusher pipe 220, and pushes the material in the first pusher pipe 220 into the pyrolysis pipe 100. The material in the pyrolysis pipe 100 is continuously replenished by the first pusher pipe 220, squeezes each other and continues to move downward to the lower part of the pyrolysis pipe 100 until it moves to the heating device 600 section for pyrolysis reaction.

[0049] It can be understood that the gas collecting device 300 includes a manifold 310 and a plurality of branch pipes 320 , each pyrolysis pipeline 100 is connected to a branch pipe 320 , and the plurality of branch pipes 320 are all connected to the manifold 310 .

[0050] The independent branch pipe 320 is connected to the pyrolysis pipeline 100. When the pyrolysis pipeline 100 needs to be repaired, the branch pipe 320 connected to the pyrolysis pipeline 100 can be closed to separate the pyrolysis pipeline 100 from the gas collecting device 300. It should be understood that to achieve the closure of the branch pipe 320, a valve can be set on the branch pipe 320, and this method is not limited to this method.

[0051] Reference Figure 5 As shown, it can be understood that the discharge device 400 can also adopt a spiral conveying structure. The discharge device 400 includes a discharge pipe 410 and a third spiral 420. The third spiral 420 is arranged at the end of the lower section of the pyrolysis pipe 100, and the third spiral 420 extends into the interior of the pyrolysis pipe 100. The discharge pipe 410 is arranged on the side wall of the lower section of the pyrolysis pipe 100. The discharge pipe 410 is connected to the pyrolysis pipe 100. The spiral blades of the third spiral 420 start from one end extending into the interior of the pyrolysis pipe 100 and stop at the junction of the discharge pipe 410 and the pyrolysis pipe 100. The third spiral 420 is connected to a second drive motor.

[0052] The third spiral 420 is coaxial with the pyrolysis pipe 100, and directly receives the pyrolysis products of the lower section of the pyrolysis pipe 100. It should be understood that in order to ensure that the pyrolysis products can be fully cooled by the second cooling device 700, the extended portion of the third spiral 420 will not enter upward into the part where the second cooling device 700 is located, that is, the pipe section of the pyrolysis pipe 100 with the second cooling device 700. Only when the pyrolysis products have completely passed through the pipe section of the second cooling device 700, will they be pushed into the discharge pipe 410 by the third spiral 420.

[0053] It should be understood that the spiral blades of the third spiral 420 start from one end extending into the interior of the pyrolysis pipe 100 and stop at the junction of the discharge pipe 410 and the pyrolysis pipe 100, that is, the spiral blades of the third spiral 420 extend from top to bottom to the junction of the discharge pipe 410 and the pyrolysis pipe 100, and the pyrolysis products cannot continue to move downward and can only enter the discharge pipe 410 from the junction and continue to be squeezed out.

[0054] Preferably, the discharge pipe 410 can be centrally connected to a collecting hopper, which is placed below the discharge pipe 410 and has an opening facing the discharge pipe 410 .

[0055] It can be understood that the heating device 600 includes a plurality of heating pipes 610, which are arranged vertically to the pyrolysis pipe 100, and the pyrolysis pipe 100 passes through the heating pipe 610. The plurality of heating pipes 610 are arranged along the axial direction of the pyrolysis pipe 100, and the ends of one side of two adjacent heating pipes 610 form a connecting portion. Along the axial direction of the pyrolysis pipe 100, the plurality of connecting portions are alternately distributed, and the heating pipe 610 is used to pass heat medium.

[0056] The multiple heating pipes 610 form a return channel through the above-mentioned arrangement to extend the contact time between the heat medium and the pyrolysis pipe 100. The heat medium introduced into the heating pipe 610 can be hot flue gas, steam, hot air, heat transfer oil and other media. The heating temperature is generally in the range of 250°C to 800°C, and the temperature is further subdivided according to the type of material to be pyrolyzed and the process requirements. Preferably, the heat medium enters from the lower heating pipe 610 and is discharged from the upper heating pipe 610 to complete the heat exchange. It should be understood that when pyrolysis is carried out, the water vapor introduced into the heating pipe 610 cannot reach the temperature required for pyrolysis, so water vapor cannot be used, but the vapor of other substances can be used, as long as the temperature of the substance in the vapor state can meet the temperature required for pyrolysis.

[0057] It should be understood that the first cooling device 500 and the second cooling device 700 can adopt the same or similar structure. For example, the first cooling device 500 is a cooling pipe, and a cold medium is passed through the cooling pipe, and the cold medium contacts the pyrolysis pipe 100 to cool down the part. The cooling pipe is perpendicular to the pyrolysis pipe 100, and the pyrolysis pipe 100 passes through the cooling pipe. Under this structure, the cold medium passed through the cooling pipe can contact the outer surface of the pyrolysis pipe 100 to perform heat exchange.

[0058] A drying pyrolysis method according to an embodiment of the present invention uses the above-mentioned drying pyrolysis equipment and performs drying pyrolysis on the material through the following steps: Step S1, putting the material into a feeding device, and quantitatively transporting the material to a pyrolysis pipeline through the feeding device; Step S2, the heating device heats the material to complete drying and pyrolysis, the solid product of pyrolysis moves toward the bottom of the pyrolysis pipeline, and the gas product of pyrolysis moves toward the top of the pyrolysis pipeline; Step S3, the first cooling device cools the gaseous product, and the gaseous product is collected from the gas collecting device, and the second cooling device cools the solid product, and the solid product is collected from the discharging device.

[0059] The dry pyrolysis method according to the embodiment of the present invention has at least the following beneficial effects: the first cooling device is used to cool the gas generated by pyrolysis; the second cooling device is used to cool the non-gaseous products after pyrolysis.

[0060] Furthermore, if the drying pyrolysis equipment is also provided with a dredging device, the method includes step S4, periodically using the dredging device to dredge the upper part of the pyrolysis pipeline to remove the coke inside the pyrolysis pipeline.

[0061] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A drying pyrolysis device, characterized in that: include: A pyrolysis pipeline (100), wherein there are a plurality of pyrolysis pipelines (100), and the plurality of pyrolysis pipelines (100) are all arranged vertically; A feeding device (200), wherein the number of the feeding devices (200) is plural, and the upper section of each pyrolysis pipeline (100) is provided with the feeding device (200), and the feeding device (200) is in communication with the pyrolysis pipeline (100); A gas collecting device (300), the gas collecting device (300) being arranged at the upper section of the pyrolysis pipeline (100), the gas collecting device (300) being in communication with the pyrolysis pipeline (100); A discharge device (400), the discharge device (400) being arranged at the lower section of the pyrolysis pipeline (100), the discharge device (400) being in communication with the pyrolysis pipeline (100); A first cooling device (500), a heat supply device (600) and a second cooling device (700) are sequentially arranged along the upper section to the lower section of the pyrolysis pipeline (100), and the gas collecting device (300) is located above the first cooling device (500), and the material discharging device (400) is located below the second cooling device (700).

2. The drying pyrolysis equipment according to claim 1, characterized in that: The feeding device (200) and the gas collecting device (300) are both connected to the side wall of the pyrolysis pipe (100); a dredging device (800) is provided at the port of the upper section of the pyrolysis pipe (100); the dredging device (800) extends into the interior of the pyrolysis pipe (100) and can move along the axial direction of the pyrolysis pipe (100); the dredging device (800) is used to scrape the inner wall of the pyrolysis pipe (100).

3. The drying pyrolysis equipment according to claim 2, characterized in that: The dredging device (800) comprises a driving component (810) and a dredging part (820), wherein the driving component (810) is mounted on the pyrolysis pipe (100), and the dredging part (820) is arranged inside the pyrolysis pipe (100), and the dredging part (820) is connected to the driving component (810), and the driving component (810) is used to drive the dredging part (820) to move along the axial direction of the pyrolysis pipe (100).

4. The drying pyrolysis equipment according to claim 3, characterized in that: The dredging portion (820) comprises a push rod (821), the push rod (821) is transmission-connected to the driving assembly (810), the push rod (821) is coaxially arranged with the pyrolysis pipe (100), and the driving assembly (810) is used to push the push rod (821) to move axially along the pyrolysis pipe (100).

5. The drying pyrolysis equipment according to claim 4, characterized in that: A push plate (822) is provided at one end of the push rod (821) away from the driving assembly (810); the push plate (822) is perpendicular to the push rod (821); and the outer diameter of the push rod (821) is smaller than the diameter of the push plate (822).

6. The drying pyrolysis equipment according to claim 3, characterized in that: The dredging portion (820) comprises a first spiral, the first spiral is drivingly connected to the driving assembly (810), the first spiral is coaxially arranged with the pyrolysis pipe (100), and the driving assembly (810) is used to drive the first spiral to rotate circumferentially along the pyrolysis pipe (100) and to push the first spiral to move axially along the pyrolysis pipe (100).

7. The drying pyrolysis equipment according to claim 1, characterized in that: The feeding device (200) comprises a feeding pipe (210), a first pushing pipe (220) and a second spiral (230); the first pushing pipe (220) is connected to the pyrolysis pipe (100); the feeding pipe (210) is arranged vertically; the feeding pipe (210) is arranged on the side wall of the first pushing pipe (220) and is connected to the first pushing pipe (220); the second spiral (230) is arranged on the first pushing pipe (220) and is coaxial with the first pushing pipe (220); and the second spiral (230) is connected to a first driving motor.

8. The drying pyrolysis equipment according to claim 1, characterized in that: The discharge device (400) comprises a discharge pipe (410) and a third spiral (420); the third spiral (420) is arranged at the end of the lower section of the pyrolysis pipe (100), and the third spiral (420) extends into the interior of the pyrolysis pipe (100); the discharge pipe (410) is arranged on the side wall of the lower section of the pyrolysis pipe (100); the discharge pipe (410) is connected to the pyrolysis pipe (100); the spiral blades of the third spiral (420) start from one end extending into the interior of the pyrolysis pipe (100) and stop at the intersection of the discharge pipe (410) and the pyrolysis pipe (100); the third spiral (420) is connected to a second drive motor.

9. The drying pyrolysis equipment according to claim 1, characterized in that: The heat supply device (600) comprises a plurality of heat supply pipes (610), wherein the heat supply pipes (610) are arranged perpendicularly to the pyrolysis pipe (100), and the pyrolysis pipe (100) passes through the heat supply pipes (610), and the plurality of heat supply pipes (610) are arranged along the axial direction of the pyrolysis pipe (100), and ends of one side of two adjacent heat supply pipes (610) form a connecting portion, and along the axial direction of the pyrolysis pipe (100), the plurality of connecting portions are alternately distributed, and the heat supply pipe (610) is used to pass a heat medium.

10. A drying pyrolysis method, characterized in that: Using the drying and pyrolysis equipment described in any one of claims 1 to 9, and performing drying and pyrolysis on the material by the following steps: Step S1, putting the material into a feeding device, and quantitatively transporting the material to a pyrolysis pipeline through the feeding device; Step S2, the heating device heats the material to complete drying and pyrolysis, the solid product of pyrolysis moves toward the bottom of the pyrolysis pipeline, and the gas product of pyrolysis moves toward the top of the pyrolysis pipeline; Step S3, the first cooling device cools the gaseous product, and the gaseous product is collected from the gas collecting device, and the second cooling device cools the solid product, and the solid product is collected from the discharging device.

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