Chain type pyrolysis device with longitudinal flexible wires and pyrolysis method

Abstract

The invention provides a chain type pyrolysis device with longitudinal flexible wires and a pyrolysis method. The chain type pyrolysis device comprises a closed shell, a chain type transmission mechanism, a flexible reaction net, a scraper mechanism and a baffle. The chain type transmission mechanism comprises a pair of flat plate chains and driving and supporting parts thereof, and is divided into a reaction area, a separation area and a driving area; the flexible reaction net comprises a fin plate vertically arranged on the flat plate chain and a plurality of flexible wires crossing the fin plate; the scraping plate mechanism comprises a conveying belt and a flexible scraping plate and is used for stripping residues. According to the invention, large-size strip-shaped organic wastes can be directly treated, the problems of softening and bonding of raw materials, coking and slagging and high pretreatment cost are effectively solved through bonding of the flexible wires and vibration scraping of the flexible scraping plate, and an efficient, stable and automatic pyrolysis process is realized.

Description

Technical Field

[0001] This invention relates to the field of pyrolysis technology, and in particular to a chain pyrolysis device and pyrolysis method with longitudinal flexible filaments. Background Technology

[0002] Organic waste materials such as paper, tires, and fibers need to be processed into strips in some industrial and agricultural production processes. Textiles, rubber products, and plastic products also require cutting and trimming before molding, generating strip-shaped waste. If these strip-shaped wastes are carelessly discarded or landfilled, they not only pollute the environment but also result in a significant waste of resources.

[0003] Pyrolysis is a highly efficient method for treating organic strip-shaped waste. Compared with traditional methods, it offers advantages such as shorter processing cycles, higher conversion efficiency, significant volume reduction, efficient solidification of heavy metals, and avoidance of the formation of harmful substances like dioxins. It also yields high-value solid-liquid-gas byproducts. However, existing pyrolysis equipment has several shortcomings when processing strip-shaped raw materials. For example, organic raw materials soften and clump together easily when heated. Furthermore, the large size of the strips inevitably leads to blockages within the pyrolysis unit, causing severe coking and slagging problems, hindering heat transfer, and preventing the unit from operating stably for extended periods. If additional crushing pretreatment measures are used to pulverize the strip-shaped raw materials, it significantly increases the power consumption of the reaction unit, greatly raising processing costs and resulting in a bulky equipment.

[0004] Therefore, there is an urgent need to design new pyrolysis reaction devices that can ensure that strip-shaped waste materials can be directly fed into the pyrolysis reaction chamber for efficient pyrolysis without crushing and pretreatment, while also promptly cleaning up adhering coke and pyrolysis residues to prevent device blockage and maintain the stable operation of the pyrolysis process. Summary of the Invention

[0005] The purpose of this invention is to provide a chain pyrolysis device and pyrolysis method with longitudinal flexible filaments, so as to solve the technical problems of existing pyrolysis devices in the treatment of strip-shaped organic waste, such as easy softening, adhesion and blockage of raw materials, serious coking and slag formation, and high pretreatment costs.

[0006] According to one object of the present invention, the present invention provides a chain pyrolysis apparatus with longitudinal flexible filaments, comprising: The sealed outer shell is a sealed hollow box structure, with a feed inlet, a discharge outlet and an air outlet. The chain drive mechanism includes a pair of parallel, horizontally placed flat annular flat chains, and a drive wheel, a driven wheel, a support wheel, a driven shaft, a heating shaft, a fixed shaft, and a drive shaft for driving, supporting, and traction of the flat chains; the upper region of the chain drive mechanism is divided into a reaction zone, a separation zone, and a drive zone connected sequentially from the beginning to the end. The flexible reaction mesh includes multiple fins vertically and spaced apart on two flat chains and multiple flexible filaments resting on the free ends of all the fins; the fins span the two flat chains, with one end fixed to the flat chains and the other end being a free end, and are provided with grooves for supporting the flexible filaments. The scraper mechanism includes a conveyor belt arranged above the separation zone and running perpendicular to the running direction of the flat chain, and a plurality of flexible scrapers fixed at intervals on the conveyor belt; the flexible scrapers can contact the mesh surface of the flexible reaction net during the operation of the conveyor belt.

[0007] Furthermore, the driven shaft, fixed shaft, and drive shaft are solid shafts, while the heating shaft is a hollow pipe structure with a high-temperature heat medium flowing inside to provide heat.

[0008] Furthermore, the fin plate includes multiple support plates and at least one pair of fixing plates; on the support plates, the flexible wire can slide within its groove; on the fixing plates, a fixing mechanism is provided to fix the flexible wire.

[0009] Furthermore, the flexible wire is made of a high-temperature resistant metal, including steel, molybdenum, tungsten, or nickel and their alloys.

[0010] Furthermore, the time it takes for the conveyor belt to complete one revolution is equal to the time required for the flat chain to travel the distance between two adjacent fins.

[0011] Furthermore, the gap between the free end of the fin and the conveyor belt is 20 to 100 mm, and the length of the flexible scraper is 5 to 10 mm longer than the gap.

[0012] Furthermore, it also includes a pair of baffles arranged on the outside of the flexible reaction net, perpendicular to and adjacent to all the fins, with the two ends of the baffles fixed to the opposite end faces of the sealed shell.

[0013] Furthermore, the flexible filament is provided with a branch structure, the length of which is greater than the spacing between adjacent flexible filaments, and is laid on the adjacent flexible filaments along a direction perpendicular to the direction of movement.

[0014] According to another objective of the present invention, the present invention provides a pyrolysis method for the above-described chain pyrolysis apparatus with longitudinal flexible filaments, comprising the following steps: Start the chain drive mechanism and the scraper mechanism, and heat the heating shaft to the set temperature; The strip-shaped organic waste material is fed into the feed inlet and falls onto the flexible reaction net; The raw material is heated and softened in the reaction zone and adheres to the flexible filament for pyrolysis reaction, generating pyrolysis gas; The residue after pyrolysis enters the separation zone along with the flexible reaction mesh, is peeled off from the flexible filaments by the flexible scraper, and is discharged through the discharge port. The gas produced by pyrolysis is discharged through the outlet and then subjected to further processing.

[0015] Furthermore, the heating shaft is set to a temperature of 300 to 800 degrees Celsius, and the raw material is large-sized strip-shaped organic waste that has not been crushed or pre-treated.

[0016] This invention's technical solution can directly process large-sized strip-shaped organic waste, eliminating the need for crushing and pretreatment, significantly reducing energy consumption and costs. By using flexible wires to support the raw materials and combining this with the elastic vibration of flexible scrapers, it effectively solves the problems of material adhesion, coking, and blockage, ensuring long-term stable operation of the device. The use of a zoned design and independently temperature-controlled heating shafts achieves precise temperature control and efficient heat transfer, improving pyrolysis efficiency and product quality. It features automatic slag removal and continuous discharge functions, reducing manual intervention and simplifying operation and maintenance. The device has a compact and reasonable structure, high space utilization, and is easy to scale up production. The pyrolysis process is carried out in a closed, oxygen-free environment, inhibiting the formation of harmful substances such as dioxins from the source, achieving clean and environmentally friendly production. Overall, it combines innovation, practicality, and economy. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the device according to an embodiment of the present invention; Figure 2 This is an embodiment of the present invention. Figure 1 A top-view structural diagram; Figure 3 This is a schematic diagram of a support plate for supporting flexible wires according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a fixing plate for fixing flexible wires according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the front and back of the conveyor belt according to an embodiment of the present invention.

[0019] In the diagram: 1-Sealed outer shell, 11-Inlet, 12-Outlet, 13-Air outlet; 2-Chain drive mechanism, 21-Driven shaft, 22-Driven wheel, 23-Heating shaft, 24-Support wheel, 25-Fixed shaft, 26-Drive shaft, 27-Drive wheel, 28-Plate chain; 3-Flexible reaction mesh, 31-Fin plate, 311-Support plate, 312-Fixed plate, 32-Flexible filament; 4-Scraper mechanism, 41-Conveyor belt, 42-Flexible scraper; 5-Baffle. Detailed Implementation

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Example 1 like Figures 1-5 As shown, a chain pyrolysis device with longitudinal flexible filaments includes: The sealed outer shell 1 is a sealed hollow box structure, and is provided with a feed inlet 11, a discharge outlet 12 and an air outlet 13. The chain drive mechanism 2 includes a pair of parallel, horizontally placed flat annular flat chains 28, a drive wheel 27, a driven wheel 22, a support wheel 24, a driven shaft 21, a heating shaft 23, a fixed shaft 25, and a drive shaft 26; the upper region of the chain drive mechanism 2 is divided into a reaction zone A, a separation zone B, and a drive zone C connected in sequence from the beginning to the end. The flexible reaction net 3 includes multiple fins 31 vertically and spaced apart on two flat chains 28 and multiple flexible filaments 32 resting on the free ends of all the fins 31; the fins 31 span the two flat chains 28, one end of which is fixed on the flat chain 28, and the other end is a free end, and is provided with grooves to support the flexible filaments 32. The scraper mechanism 4 includes a conveyor belt 41 arranged above the separation zone B and flexible scrapers 42 fixed at intervals on the conveyor belt 41; one end of the flexible scraper 42 is fixed on the conveyor belt 41, and the other end can contact the mesh surface of the flexible reaction net 3 during operation. A pair of baffles 5 are arranged on the outside of the flexible reaction net 3, perpendicular to and close to all the fins 31, and fixed at both ends to the opposite end faces of the sealed shell 1.

[0024] Specifically, such as Figure 2 As shown, two flat chains 28 are respectively close to one end face of the sealed shell 1; all driven shafts 21, heating shafts 23, fixed shafts 25 and drive shafts 26 are arranged in parallel on a plane; all drive wheels 27, driven wheels 22 and support wheels 24 have the same outer diameter, and the flat chains 28 form an annular area around the outer surface of all wheels.

[0025] Driven shaft 21, fixed shaft 25 and drive shaft 26 are solid shafts, and heating shaft 23 is a hollow pipe; driven shaft 21 and drive shaft 26 pass through the opposite end faces of the sealed housing 1 and are supported by the housing through bearings; drive shaft 26 is connected to the drive system; driven shaft 21 is provided with a tensioning mechanism; heating shaft 23 and fixed shaft 25 pass through the sealed housing 1 and are fixed to the housing.

[0026] The feed inlet 11 is located on the top of the sealed shell 1 above the beginning of the reaction zone A, and its width is smaller than the width of the reaction zone A; the discharge outlet 12 is located on the bottom of the sealed shell 1 below the separation zone B, and its width is larger than the width of the separation zone B; the air outlet 13 is located on the top of the sealed shell 1 above the end of the reaction zone A.

[0027] like Figure 3 and Figure 4 As shown, the fin plate 31 is divided into multiple support plates 311 and a pair of fixing plates 312; on the support plates 311, the flexible wires 32 can slide in the grooves; on the fixing plates 312, the flexible wires 32 are fixed by a fixing mechanism.

[0028] The flexible wire 32 is made of high-temperature resistant steel, molybdenum, tungsten or nickel; the flexible scraper 42 is a steel sheet.

[0029] The time it takes for the conveyor belt 41 to run one revolution is equal to the time it takes for the flat chain 28 to run the distance between adjacent fin plates 31; the length of the fin plate 31 is greater than the length of the conveyor belt 41, and the difference between the two is less than 50 mm.

[0030] The distribution area of ​​the flexible scraper 42 along the running direction of the conveyor belt 41 does not exceed half of one circumference around the surface of the conveyor belt, and the distribution area perpendicular to the running direction does not exceed the gap between adjacent fins 31; the interval between adjacent flexible scrapers 42 is at least 10mm.

[0031] The width of the baffle 5 is less than the gap between the flat chain 28 and the top of the sealed shell 1; the gap between the baffle 5 and the flat chain 28 is greater than 2 mm; the distance between the baffle 5 and the fin 31 on the same side is greater than 2 mm.

[0032] The flexible filament 32 has branches, and the length of the branches is greater than the spacing between adjacent flexible filaments 32; the branches rest on the adjacent flexible filaments 32 in a direction perpendicular to the direction of movement.

[0033] The gap between the drive wheel 27, driven wheel 22, support wheel 24 and flat chain 28 and the inner surface of the sealed housing 1 is greater than 10 mm.

[0034] The gap between the free end of the fin plate 31 and the conveyor belt 41 is 20~100 mm, and the length of the flexible scraper 42 is 5~10 mm larger than the gap.

[0035] In the planar running area of ​​the flat chain 28, the distance between adjacent fins 31 is 100~200 mm; the difference between the distance between the two flat chains 28 and the axial distance between each pair of fixed shafts 25 does not exceed 50 mm.

[0036] High-temperature flue gas or molten salt flows inside the heating shaft 23.

[0037] The pyrolysis method of the above-mentioned chain pyrolysis device with longitudinal flexible filaments includes the following steps: S1. Drive the drive shaft 26 and drive wheel 27 to rotate, which drives the flat chain 28 and fin plate 31 to move, and drives the flexible filament 32 to move through the fixed plate 312; the conveyor belt 41 runs and drives the flexible scraper 42 to circulate; heat the heating shaft 23 to the set temperature; S2. The raw material enters the sealed shell 1 through the feed port 11 and falls onto the flexible reaction net 3. Under the heating of the heating shaft 23, it softens and adheres to the flexible wire 32 and undergoes pyrolysis. S3, the flexible reaction net 3 moves from the beginning to the end of the reaction zone A along with the flat chain 28 and enters the separation zone B, increasing the degree of pyrolysis and generating pyrolysis gas; S4. In the separation zone B, the flexible scraper 42 and the flexible wire 32 collide intermittently, generating vibration and peeling off the residue. The residue is discharged from the discharge port 12 under the action of gravity. S5. The pyrolysis gas is discharged from the outlet 13, and after condensation and separation, the liquid products and non-condensable gases are collected.

[0038] Specifically, the set temperature of the heating shaft 23 is 300~800℃. The rotational speed of the drive shaft 26 is 1~20 r / min.

[0039] In step S4, the collision between the flexible scraper 42 and the flexible wire 32 generates elastic high-frequency vibration, and removes the residue through scraping action.

[0040] The raw materials are strip-shaped organic waste, including waste paper, waste plastics, waste textiles, or waste tires. The pyrolysis method does not require pre-treatment such as crushing the raw materials.

[0041] Example 2 like Figures 1-5 As shown, this embodiment discloses a chain pyrolysis device with longitudinal flexible filaments, which includes a sealed outer shell 1, a chain drive mechanism 2, a flexible reaction mesh 3, a scraper mechanism 4, and a pair of baffles 5, wherein: The sealed outer shell 1 is a sealed hollow box structure that encloses all the chain drive mechanism 2, flexible reaction net 3, scraper mechanism 4 and baffle 5; the sealed outer shell 1 has a feed inlet 11, a discharge outlet 12 and an air outlet 13.

[0042] The chain drive mechanism 2 includes a pair of parallel, horizontally placed flat annular plate chains 28, a drive wheel 27, a driven wheel 22, and a support wheel 24 for supporting or traction of the plate chains 28, and a driven shaft 21, a heating shaft 23, a fixed shaft 25, and a drive shaft 26 for mounting the drive wheel 27, driven wheel 22, or support wheel 24. The chain drive mechanism 2 is divided into a reaction zone A, a separation zone B, and a drive zone C connected sequentially from the beginning to the end. At the beginning of the reaction zone A of the chain drive mechanism 2, a driven shaft 21 is arranged, and two driven wheels 22 are fixed on both sides of the driven shaft 21 along its axial direction, respectively following the rotation of the two plate chains 28 and limiting the movement position of the plate chains 28. At other positions in the reaction zone A, [the following are also mentioned:] heating shaft 23, fixed shaft 25, and drive shaft 26. Multiple heating shafts 23 are provided, each with two support wheels 24 mounted on both sides of its axial direction. In the separation zone B, one or more pairs of fixed shafts 25 are arranged, each pair of fixed shafts 25 being coaxially arranged and located on both sides of its axial direction, with a support wheel 24 mounted on each fixed shaft 25. A pair of support wheels 24 located at corresponding positions on both sides support two flat chains 28 respectively. The support wheels 24 are connected to the heating shafts 23 or fixed shafts 25 via bearings and can rotate freely. In the drive zone C, a drive shaft 26 is provided, with two drive wheels 27 fixed on both sides of its axial direction, which drive the two flat chains 28 to rotate respectively. Above the chain drive mechanism 2, the flat chains 28 run from the beginning to the end.

[0043] Two flat chains 28 are respectively close to opposite end faces of the sealed outer shell 1. Two links on opposite positions of these flat chains 28 can be connected by thin rods to enhance the synchronous movement of the two flat chains 28. All driven shafts 21, heating shafts 23, fixed shafts 25, and drive shafts 26 are arranged parallel to each other on a single plane. All drive wheels 27, driven wheels 22, and support wheels 24 have the same outer diameter, and the flat chains 28 surround the annular area formed by the outer surfaces of all drive wheels 27, driven wheels 22, and support wheels 24. Driven shafts 21, fixed shafts 25, and drive shafts 26 are solid shafts, while heating shaft 23 is a hollow pipe. Both driven shafts 21 and drive shafts 26... The drive shaft 26 passes through the opposite end faces of the sealed housing 1 and is supported by the sealed housing 1 via bearings; the drive shaft 26 passes through the end face of one end of the sealed housing 1 and is connected to the drive system, which can drive the drive shaft 26 and drive wheel 27 to rotate, further driving the flat chain 28 to move; the driven shaft 21 is equipped with a matching tensioning mechanism to straighten the flat chain 28; the heating shaft 23 passes through the opposite end faces of the sealed housing 1 and is fixed to the sealed housing 1; each pair of fixed shafts 25 passes through the two opposite end faces of the sealed housing 1 and is fixed to the sealed housing 1; the gap between the drive wheel 27, driven wheel 22, support wheel 24 and flat chain 28 and the inner surface of the sealed housing 1 is greater than 10 mm; high-temperature flue gas or molten salt flows inside the heating shaft 23; the difference between the distance between the two flat chains 28 and the axial distance between each pair of fixed shafts 25 does not exceed 50 mm.

[0044] The feed inlet 11 is located on the top of the sealed shell 1 above the first end of the reaction zone A of the chain drive mechanism 2. The feed inlet 11 is connected to the feeding system, and the width of the feed inlet 11 is smaller than the width of the reaction zone A of the chain drive mechanism 2. The discharge outlet 12 is located on the bottom of the sealed shell 1 below the separation zone B of the chain drive mechanism 2. The discharge outlet 12 is connected to the solid collection system, and the width of the discharge outlet 12 is larger than the width of the separation zone B of the chain drive mechanism 2. The air outlet 13 is located on the top of the sealed shell 1 above the end of the reaction zone A of the chain drive mechanism 2. The air outlet 13 is connected to the separation and condensation system.

[0045] The flexible reactive mesh 3 includes multiple fins 31 vertically and spaced apart on two flat chains 28 and multiple flexible wires 32 resting on the free ends of all the fins 31. Each fin 31 spans the two flat chains 28, with one end fixed to both sides of the two chains and the other end free. Multiple equally spaced grooves are provided on the free ends of the fins 31 to support the flexible wires 32. Each fin 31 consists of multiple support plates 311 and a pair of fixing plates 312. The flexible wires 32 can slide within the grooves on the support plates 311. Fixing mechanisms are installed on the grooves of the fixing plates 312 to fix the flexible wires 32. On the fixed plate 312; a pair of support plates 311 are respectively installed on opposite sides of the annular structure of the flat chain 28, and the flat chain 28 is divided into two equal-length segments by the two support plates 311; the connection points of multiple fins 31 with the flat chain 28 are parallel to each other and the spacing is the same; flexible wires 32 surround the grooves of all support plates 311 at the same position to form an annular structure; all flexible wires 32 are parallel to each other and cover the grooves on the entire support plate 311, forming a mesh surface; the material of the flexible wires 32 is high-temperature resistant steel, molybdenum, tungsten or nickel; in the planar running area of ​​the flat chain 28, the spacing between adjacent fins 31 is 100~200 mm, and the width of the fins 31 is 10~100 mm to ensure that the flexible wires 32 do not contact the drive shaft 26 and the driven shaft 21 when passing through the arc area at both ends of the chain drive mechanism.

[0046] The scraper mechanism 4 includes a flat conveyor belt 41 arranged above the separation zone of the chain drive mechanism 2 and running perpendicular to the running direction of the flat chain 28, and flexible scrapers 42 with flat strip-shaped elastic structures fixed at intervals on the conveyor belt 41. One end of the flexible scraper 4 is fixed to the conveyor belt 41, and the other end can contact the mesh surface during the operation of the conveyor belt 41. Multiple flexible scrapers 4 are evenly arranged on the conveyor belt 41 in both the transverse and longitudinal directions to avoid contact with the fins 31. The time for the conveyor belt 41 to run one revolution is equal to the time for the flat chain 28 to run the distance between adjacent fins 31. The length of the fins 31 is greater than the length of the conveyor belt 41, and the difference between the two is less than 50 mm. The distribution area of ​​the flexible scrapers 42 along the running direction of the conveyor belt 41 does not exceed half of one revolution around the surface of the conveyor belt 41, and the distribution area of ​​the flexible scrapers 42 perpendicular to the running direction of the conveyor belt 41 does not exceed the gap between adjacent fins 31. On the conveyor belt 1, the interval between adjacent flexible scrapers 4 is at least 10 mm. mm; the gap between the free end of the fin plate 31 and the conveyor belt 41 is 20~100 mm, and the length of the flexible scraper 4 is 5~10 mm longer than the gap; this design allows the flexible scraper 4 to fully contact the flexible wire 32, making it easy to scrape and remove the adhesive residue remaining on the surface of the flexible reaction mesh 3.

[0047] The baffle 5 is a long, thin, planar plate arranged on the outside of the flexible reaction net 3. The baffle 5 is perpendicular to and close to all the fins 31. The baffle 5 is located above the flat chain 28, and its two ends are fixed to the opposite end faces of the sealed shell 1. The width of the baffle 5 is less than the gap between the flat chain 28 and the top of the sealed shell 1. The gap between the baffle 5 and the flat chain 28 is greater than 2 mm. The distance between the baffle 5 and the fins 31 on the same side is greater than 2 mm. This design allows the baffles 5 on both sides to wrap around the flexible reaction net 3, preventing the raw materials from falling in the direction perpendicular to the direction of movement.

[0048] Specifically, in this embodiment, the width of the chain drive mechanism 2, i.e., the distance between the two flat chains 28, is 1000 mm; the length of the reaction zone A is 2200 mm; the length of the separation zone B is 400 mm; the length of the drive zone C is 300 mm; and the width of the flat chains 28 is 50 mm. The width of the discharge port is 500 mm. There are 5 heating shafts in the reaction zone A and 1 pair of fixed shafts in the separation zone B. The outer diameter of all drive wheels 27, driven wheels 22, and support wheels 24 is 200 mm, and the gap between them and the inner surface of the sealed shell 1 is 20 mm. The shaft diameter of the drive shaft 26 and driven shaft 21 is 80 mm, and the shaft diameter of the heating shaft 23 and fixed shaft 25 is 140 mm. The axial spacing of the fixed shafts 25 is 950 mm. High-temperature flue gas flows inside the heating shaft 23. The fin plate 31 is 1000 mm long, 20 mm wide, and 2 mm thick, ensuring that the gap between the free end of the fin 31 and the conveyor belt 41 is 50 mm. mm; spanning two flat chain 28, 22 fins 31 are evenly spaced, with adjacent fins 31 spaced 300 mm apart in the planar movement area of ​​the flat chain 28; the conveyor belt 41 is 950 mm long and 350 mm wide; this embodiment adopts Figure 5 The flexible scraper 42 is installed in a structure that is not limited to this method. Three rows of flexible scrapers 42 are evenly distributed perpendicular to the running direction of the conveyor belt 41. Each row has six closely spaced flexible scrapers 42 forming a scraper group, with the scraper groups spaced evenly along the running direction of the conveyor belt 41. Each flexible scraper 42 is a flat, strip-shaped, elastic thin stainless steel sheet, 60 mm long, 50 mm wide, and 0.2 mm thick. This ingenious arrangement allows the flexible scrapers 42 to achieve optimal efficiency in scraping and removing adhesive residue from the surface of the flexible reactive mesh 3. The baffle 5 is 90 mm wide; the gap between the baffle 5 and the flat chain 28 is 4 mm; the distance between the baffle 5 and the fin 31 on the same side is 4 mm.

[0049] This embodiment also provides a pyrolysis method for strip-shaped organic waste, which utilizes the aforementioned chain pyrolysis device with longitudinal flexible filaments to pyrolyze the strip-shaped organic waste. The steps include: S1. Drive the drive shaft 26 and drive wheel 27 to rotate, which drives a pair of flat chain 28 and fin plate 31 to move together at a set speed, and further drives the flexible filament 32 to move through the fixed plate 312; the conveyor belt 41 runs and drives the flexible scraper 42 to run in a cycle; and heats multiple heating shafts 23 to their respective set temperatures. S2. The raw material enters the sealed shell 1 through the feed port 11 and falls on the flexible reaction net 3 at the beginning of the reaction zone A of the chain transmission mechanism 2. Under the heating action of the heating shaft 23, the temperature gradually rises, the raw material softens and sticks to the flexible filament 32 and undergoes pyrolysis. S3, the flexible reaction net 3 continues to move along the ring under the drive of the flat chain 27, so that the raw material located at the beginning of the reaction zone A of the chain transmission mechanism 2 moves with the flexible reaction net 3 to the end of the reaction zone A and enters the separation zone B, the degree of pyrolysis gradually increases, and pyrolysis gas is generated. S4. Inside the separation zone B of the chain drive mechanism 2, the flexible scraper 4 and the flexible wire 32 of the flexible reaction net 3 intermittently collide, generating elastic high-frequency vibration. Through the intermittent vibration of the flexible wire 32 and the scraping action of the flexible scraper 2, the coke and slag remaining on the flexible reaction net 3 are peeled off and automatically discharged from the outlet 12 under the action of gravity, and collected by the solid collection system. S5. The generated pyrolysis gas is discharged through gas outlet 13. After condensation and separation, liquid products and non-condensable gases are collected.

[0050] In order to improve the pyrolysis efficiency of the raw materials, the heating shaft 23 is set to a temperature of 300~800℃ and the drive shaft 26 is set to a speed of 1~20 r / min, so that the temperature and reaction time of the pyrolysis process are as close as possible to the optimal pyrolysis environment of the specific strip-shaped raw materials, thereby improving the pyrolysis conversion rate of the raw materials and the yield of the target product.

[0051] Example 3 like Figures 1-5 As shown, this embodiment utilizes the aforementioned pyrolysis device to perform a pyrolysis process. The temperatures of the five heating shafts 23 are adjusted sequentially from the beginning to the end: 400℃, 450℃, 500℃, 550℃, and 500℃. The drive shaft speed is 4 r / min. Waste paper strips with an average length of 300 mm are fed into a chain pyrolysis device with longitudinal flexible filaments. After one round of pyrolysis, the pyrolysis gas is collected and rapidly separated and condensed. The liquid phase yield is 41.6%, with the target product, L-glucanone, accounting for 10.2 wt% of the liquid phase product, achieving efficient disposal and utilization of waste paper strips. Simultaneously, after the flexible reaction mesh 3 passes through the separation zone, the residue generated by pyrolysis on the flexible filaments 32 is basically scraped off, effectively preventing the adhesion, blockage, coking, and slagging of the raw materials.

[0052] Example 4 like Figures 1-5As shown, this embodiment utilizes the aforementioned pyrolysis device to perform a pyrolysis process. The temperatures of the five heating shafts 23 are adjusted sequentially from the beginning to the end: 400℃, 450℃, 500℃, 550℃, and 600℃, with a drive shaft speed of 8 r / min. PET waste plastic wire with an average length of 200 mm is fed into a chain pyrolysis device with longitudinal flexible filaments. After one round of pyrolysis, the pyrolysis gas is collected and rapidly separated and condensed. The liquid phase yield is 38.4%, with the target product benzoic acid yielding 26.2 wt%, achieving efficient disposal and utilization of the waste plastic wire. Simultaneously, after the flexible reaction mesh 3 passes through the separation zone, the residue generated during pyrolysis on the flexible filaments 32 is essentially scraped off, effectively preventing the adhesion, blockage, and coking of raw materials.

[0053] Example 5 like Figures 1-5 As shown, this embodiment utilizes the aforementioned pyrolysis device to perform the pyrolysis process. The temperatures of the five heating shafts 23 are adjusted sequentially from the beginning to the end: 400℃, 500℃, 600℃, 650℃, and 500℃. The drive shaft speed is 6 r / min. Waste denim processing waste with an average length of 200 mm is fed into a chain pyrolysis device with longitudinal flexible filaments. After one round of pyrolysis, the pyrolysis gas is collected and rapidly separated and condensed. 38.5% of the non-condensable gas is collected, achieving efficient disposal and utilization of the waste denim processing waste. Simultaneously, after the flexible reaction mesh 3 passes through the separation zone, the residue generated by pyrolysis on the flexible filaments 32 is basically scraped off, effectively preventing the raw materials from sticking, clogging, and coking.

[0054] Example 6 like Figures 1-5 As shown, this embodiment utilizes the aforementioned pyrolysis device to perform a pyrolysis process. The temperatures of the five heating shafts 23 are adjusted sequentially from the beginning to the end: 400℃, 550℃, 700℃, 550℃, and 500℃. The drive shaft speed is 6 r / min. Waste tire strips with an average length of 300 mm are fed into a chain pyrolysis device with longitudinal flexible wires. After one round of pyrolysis, the pyrolysis gas is collected and rapidly separated and condensed. The liquid phase yield is 43.2%, with the target aromatic hydrocarbon product accounting for 16.3 wt% of the liquid phase product, achieving efficient disposal and utilization of waste tire strips. Simultaneously, after the flexible reaction mesh 3 passes through the separation zone, the residue generated by pyrolysis on the flexible wires 32 is basically scraped off, effectively preventing the adhesion, blockage, coking, and slagging of the raw materials.

[0055] This invention discloses a chain pyrolysis device with longitudinal flexible filaments, capable of directly and efficiently pyrolyzing large-sized strip-shaped organic waste. The core components include a pair of flat chains, a flexible reaction net, and flexible scrapers. The flexible reaction net is fixed to the pair of flat chains via transverse fins, driving a drive shaft and drive wheel to rotate, causing the flat chains and flexible reaction net to move in a circular motion at a set speed. Parallel flexible filaments are vertically spanned across the fins of the flexible reaction net, with the filaments aligned with the direction of motion and driven by fixed plates. After the strip-shaped waste enters the sealed shell and falls onto the flexible reaction net, it softens as the temperature rises, wrapping around and adhering to the parallel flexible filaments, simultaneously initiating pyrolysis. Driven by the flat chains, the flexible reaction net moves the waste from the beginning to the end of the reaction zone and into the separation zone. In the separation zone, the flexible scraper intermittently collides with the parallel flexible filaments, generating elastic high-frequency vibrations. These vibrations and scraping action remove residual coke and slag from the surface of the flexible reaction net, and automatic discharge is achieved through gravity. Because of the adoption of the above technical solution, the present invention has the following effects: 1. Stable equipment operation: The strip-shaped waste material used as raw material undergoes pyrolysis on a flexible reaction mesh. The raw material softens when heated and can spontaneously adhere to the flexible wires. At the same time, it ensures that the contact area between the raw material and the flexible wires is small, so that the pyrolysis residue can easily detach spontaneously under the intermittent collision action of the flexible scraper. The baffle prevents the raw material from falling into the reaction zone and sticking to the inner surface of the sealed shell, effectively preventing blockage of the sealed shell and the chain drive mechanism, and ensuring that the equipment can operate smoothly and continuously. The fins span two flat chains, which can enhance the stability of the chain drive mechanism.

[0056] 2. High heat transfer efficiency and high pyrolysis efficiency: The flexible reaction mesh and heating shaft are located inside the sealed shell and are close to each other, which reduces heat dissipation. At the same time, each heating shaft can be independently temperature controlled to ensure that the raw materials continue to pyrolyze at the optimal temperature required by the pyrolysis curve, resulting in high reaction efficiency.

[0057] 3. Effective control of reaction time: Since the raw materials mainly come into contact with the elastic flexible filaments, the flexible filaments moving to the separation zone will experience violent vibrations when they encounter the flexible scraper. However, due to the obstruction of the fins, the vibrations are difficult to pass across the fins and be transmitted to the flexible filaments located in the reaction zone, thus avoiding the accidental fall of unreacted raw materials. At the same time, the size of the reaction zone is easy to adjust, ensuring an effective reaction time.

[0058] 4. Convenient reaction control and wide adaptability of raw materials: Depending on the characteristics of the raw materials and the type of target product, flexible reaction nets with different gaps and connection methods, as well as flexible scrapers with different sizes and layouts, can be replaced. At the same time, the feed rate, drive shaft speed, conveyor belt running speed, pyrolysis temperature and other parameters of the device can be flexibly controlled to adjust the pyrolysis reaction process, so as to achieve efficient pyrolysis of different raw materials in a targeted manner.

[0059] 5. Automatic slag discharge: The movement direction of the flexible scraper is perpendicular to the movement direction of the flexible wire. At the same time, the fixed shaft is divided into two coaxial sections. An independent drive area is set at the end of the chain drive mechanism to ensure that there is no shaft obstruction below the separation zone. The coke and slag remaining after pyrolysis will be automatically discharged from the discharge port under the action of the flexible scraper and gravity.

[0060] 6. Simple structure and easy maintenance: No complex rotating components are required. The core of the chain drive mechanism is a common chain plate conveyor belt. The finned plates are connected to the flat chain, and the flexible wires are attached to the outer edge of the finned plates. They can slide on the support plate and be pushed by the fixed plate. The conveyor belt is fixed to the sealed shell through the drive shaft, which is convenient for replacement and easy for device maintenance.

[0061] 7. Compact device with high space utilization: Large-sized strip-shaped raw materials can be directly fed into the pyrolysis device for pyrolysis without being crushed into particles, which can save the need for additional pretreatment, stirring, decoking and other equipment. At the same time, the core of the device is only a chain drive mechanism, which makes the device compact, improves the overall space utilization, and makes it easy to expand the processing scale of the device by extending the reaction zone.

[0062] 8. Effective dechlorination and clean emissions: Pyrolysis is an anaerobic process that produces reducing components such as H2 and CO. Moreover, the temperature is relatively low, which can effectively inhibit the formation of harmful substances such as dioxins from the source and achieve efficient dechlorination.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chain pyrolysis device with longitudinal flexible filaments, characterized in that, include: The sealed outer shell is a sealed hollow box structure, with a feed inlet, a discharge outlet and an air outlet. The chain drive mechanism includes a pair of parallel, horizontally placed flat annular flat chains, and a drive wheel, a driven wheel, a support wheel, a driven shaft, a heating shaft, a fixed shaft, and a drive shaft for driving, supporting, and traction of the flat chains; the upper region of the chain drive mechanism is divided into a reaction zone, a separation zone, and a drive zone connected sequentially from the beginning to the end. The flexible reaction mesh includes multiple fins vertically and spaced apart on two flat chains and multiple flexible filaments resting on the free ends of all the fins; the fins span the two flat chains, with one end fixed to the flat chains and the other end being a free end, and are provided with grooves for supporting the flexible filaments. The scraper mechanism includes a conveyor belt arranged above the separation zone and running perpendicular to the running direction of the flat chain, and a plurality of flexible scrapers fixed at intervals on the conveyor belt; the flexible scrapers can contact the mesh surface of the flexible reaction net during the operation of the conveyor belt.

2. The chain pyrolysis device with longitudinal flexible filaments according to claim 1, characterized in that, The driven shaft, fixed shaft, and drive shaft are solid shafts, while the heating shaft is a hollow pipe structure in which a high-temperature heat medium can flow to provide heat.

3. The chain pyrolysis device with longitudinal flexible filaments according to claim 1, characterized in that, The fin includes multiple support plates and at least one pair of fixing plates; on the support plates, the flexible wire can slide within its groove; on the fixing plates, a fixing mechanism is provided to fix the flexible wire.

4. The chain pyrolysis device with longitudinal flexible filaments according to claim 1, characterized in that, The flexible wire is made of a high-temperature resistant metal, including steel, molybdenum, tungsten, or nickel and their alloys.

5. The chain pyrolysis device with longitudinal flexible filaments according to claim 1, characterized in that, The time it takes for the conveyor belt to complete one revolution is equal to the time required for the flat chain to travel the distance between two adjacent fins.

6. The chain pyrolysis device with longitudinal flexible filaments according to claim 1, characterized in that, The gap between the free end of the fin and the conveyor belt is 20 to 100 mm, and the length of the flexible scraper is 5 to 10 mm longer than the gap.

7. The chain pyrolysis device with longitudinal flexible filaments according to claim 1, characterized in that, It also includes a pair of baffles arranged on the outside of the flexible reaction net, perpendicular to and adjacent to all the fins, with the two ends of the baffles fixed to the opposite end faces of the sealed shell.

8. The chain pyrolysis device with longitudinal flexible filaments according to claim 1, characterized in that, The flexible filament is provided with a branch structure, the length of which is greater than the spacing between adjacent flexible filaments, and is laid on the adjacent flexible filaments along a direction perpendicular to the direction of movement.

9. The pyrolysis method of the chain pyrolysis apparatus with longitudinal flexible filaments according to any one of claims 1-8, characterized in that, Includes the following steps: Start the chain drive mechanism and the scraper mechanism, and heat the heating shaft to the set temperature; The strip-shaped organic waste material is fed into the feed inlet and falls onto the flexible reaction net; The raw material is heated and softened in the reaction zone and adheres to the flexible filament for pyrolysis reaction, generating pyrolysis gas; The residue after pyrolysis enters the separation zone along with the flexible reaction net, is peeled off from the flexible filaments by the flexible scraper, and is discharged through the discharge port; The gas produced by pyrolysis is discharged through the outlet and then subjected to further processing.

10. The pyrolysis method according to claim 9, characterized in that, The heating shaft is set to a temperature of 300 to 800 degrees Celsius, and the raw material is large-sized strip-shaped organic waste that has not been crushed or pre-treated.

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