Method and device for synergic thermal disposal of resinous composite waste and sludge

Abstract

The present application relates to the technical field of resin composite waste and high-moisture sludge recycling treatment, and discloses a resin composite waste and sludge synergistic thermal treatment method and device, which fully recycles resin and glass fibers in resin composite waste and metal elements in high-moisture sludge. First, the resin composite waste and sludge are crushed, and then a spiral mixer is used to mix them uniformly. The crushed waste is used as an inert porous medium and auxiliary fuel to carry out pyrolysis reaction with the sludge. After the reaction is completed, high-value metals such as gold, silver, palladium and copper and glass fibers are obtained. The obtained glass fibers can continue to participate in the pyrolysis reaction as an inert porous medium or be used for building structures and decorative materials. The present application aims to provide a feasible solution for the synergistic treatment of waste and high-moisture sludge, which not only fully recycles resin and glass fibers in waste, but also reduces the environmental pressure caused by waste accumulation and landfill.

Description

Technical Field

[0001] This invention relates to the technical field of resin-based composite waste and high-moisture sludge recycling and treatment, and particularly to a method and apparatus for the synergistic thermal treatment of resin-based composite waste and sludge. Background Technology

[0002] Currently, with the rapid development of the wind power industry, the disposal of large quantities of waste resin-based composite materials is becoming increasingly prominent. The recycling and treatment of waste resin-based composite materials has become an urgent problem to be solved. Resin-based composite waste is mainly composed of composite materials such as epoxy resin and glass fiber, and is characterized by its large volume, high hardness, and difficulty in degradation. Traditional landfill disposal not only occupies a large amount of land resources but may also cause environmental pollution. On the other hand, high-moisture sludge generated by sewage treatment plants also faces disposal challenges; conventional treatment methods are energy-intensive and costly. High-moisture sludge, as industrial waste, has a high water content and low calorific value, resulting in high energy consumption for its separate disposal. Traditional sludge treatment methods such as incineration and landfill cause environmental pollution and resource waste.

[0003] In the existing technology, there is a lack of a technical method for the co-thermal treatment of resin-based composite waste and sludge to improve resource recycling efficiency and reduce environmental pollution. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the co-thermal treatment of resin-based composite waste and sludge, this invention proposes an innovative co-thermal treatment method. By combining the treatment of these two types of waste, the co-thermal treatment technology of resin-based composite waste and sludge is realized, which reduces the environmental burden while realizing the integrated utilization of resources.

[0006] Therefore, the purpose of this invention is to provide a method and apparatus for the synergistic thermal treatment of resin-based composite waste and sludge, which synergistically treats resin-based composite waste and high-moisture sludge.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A co-thermal treatment device for resin-based composite waste and sludge includes: a reaction assembly comprising a reactor, a heating coil disposed within the reactor, a thermocouple disposed within the reactor, a temperature detector connected to the thermocouple, and a digital temperature controller connected to the reactor; a drive assembly disposed on the top of the reactor, comprising a mounting frame, a first motor and a second motor disposed on the mounting frame, a drive rod connected to the first motor, a first bevel gear disposed on the drive rod, a gear that rotates synchronously with the output shaft of the second motor, a limiting cylinder fixedly connected to the gear, a second bevel gear connected to the limiting cylinder, and a drive cylinder sleeved outside the limiting cylinder; and a mixing assembly comprising a guide cylinder disposed within the reactor, a central rod fixedly connected to the drive cylinder, a base sleeved outside the central rod, a third bevel gear disposed on the central rod, bevel gear sets symmetrically disposed on both sides of the third bevel gear, and stirring components symmetrically disposed on the upper and lower sides of the bevel gear sets.

[0008] As a preferred embodiment of the resin-based composite waste and sludge co-thermal treatment device of the present invention, the reactor is provided with an inlet, the reactor is covered with insulation cotton, the temperature detector monitors the internal temperature of the reactor through a thermocouple, and an air pump is provided at the bottom of the reactor to introduce oxygen into the reactor through an air distributor.

[0009] As a preferred embodiment of the resin-based composite waste and sludge co-thermal treatment device of the present invention, the mounting frame is fixedly installed on the top of the reactor, the first motor is fixedly installed on the reactor, the output shaft of the first motor is fixedly connected to the drive rod, a second gear is fixedly installed on the output shaft of the second motor, the second gear meshes with the first gear, the limiting cylinder is sleeved on the outside of the drive rod and rotatably connected to the drive rod, a second bevel gear is fixedly connected to the side wall of the limiting cylinder, the second bevel gear meshes with the first bevel gear, a limiting rod is also provided on the second bevel gear, and the limiting rod and the second bevel gear are not concentrically arranged.

[0010] As a preferred embodiment of the resin composite waste and sludge co-thermal treatment device of the present invention, the driving cylinder and the limiting cylinder are rotatably connected, the limiting cylinder is symmetrically provided with sliding strips on the side wall, the driving cylinder is provided with a sliding groove, the sliding strips are slidably connected with the sliding groove, the driving cylinder extends into the reactor, the inner wall of the driving cylinder is provided with an annular groove, and the limiting rod is embedded in the groove.

[0011] As a preferred embodiment of the resin-based composite waste and sludge co-thermal treatment device of the present invention, the drive cylinder is slidably disposed inside the guide cylinder, the bottom of the guide cylinder is provided with a limiting end, the inner wall of the limiting end is symmetrically provided with limiting strips, the base is symmetrically provided with notches, the limiting strips are embedded in the notches, and the base is slidably disposed inside the limiting end; the third bevel gear is disposed inside the base, and a fixing frame is also provided inside the base, the central rod passes through the fixing frame and is rotatably connected to it.

[0012] As a preferred embodiment of the resin composite waste and sludge co-thermal treatment device of the present invention, the base has symmetrical protrusions on its outer wall, the stirring component includes an inner ring seat, an outer cylinder fixed outside the inner ring seat, and a paddle on the outer cylinder, and a fourth bevel gear is provided on the inner ring seat.

[0013] In a preferred embodiment of the resin-based composite waste and sludge co-thermal treatment device of the present invention, the inner ring seat is connected to the protrusion, and the inner ring seat can fit against the protrusion.

[0014] As a preferred embodiment of the resin composite waste and sludge co-thermal treatment device of the present invention, the bevel gear set includes two fixedly connected bevel gears, the bevel gear set is rotatably mounted on the base, one end of the bevel gear set meshes with a third bevel gear, and the other end of the bevel gear set meshes with a fourth bevel gear in the upper and lower stirring components.

[0015] A method for the co-thermal treatment of resin-based composite waste and sludge, using the aforementioned co-thermal treatment device for resin-based composite waste and sludge, includes the following steps: S1: The waste resin composite waste is pre-treated by a multi-stage crushing process; the collected resin composite waste is coarsely crushed by a large shearing device, then crushed by a crusher, and then ground and screened. S2: Pre-treatment of high-moisture sludge; The collected high-moisture sludge is first dried, then crushed, ground and sieved to obtain pre-treated sludge; S3: The pretreated waste resin composite waste blades are mixed with high moisture content sludge. A spiral mixer is used to mix the pretreated resin composite waste and the pretreated high moisture content sludge evenly in proportion. S4: Co-thermal treatment of mixed resin-based composite waste and high-moisture sludge. After the materials are mixed evenly, they are put into the reactor. The pyrolysis temperature and reaction time are set. During the reaction stage, oxygen is continuously introduced at a stable flow rate until the reaction stops. S5: After the reaction is completed, the weight loss rate of the reactants and the total recovery rate of high-value metals are measured. The remaining glass fibers continue to participate in the pyrolysis reaction as an inert porous medium or are used in building structures and decorative materials.

[0016] As a preferred embodiment of the co-thermal treatment method for resin-based composite waste and sludge described in this invention, the following steps are specified: In S1, the crushed resin-based composite waste is sieved using a 100-200 mesh screen; in S2, the drying temperature is 105℃, the drying time is 6 hours, and the crushed and ground sludge is sieved using a 100-200 mesh screen; in S3, the mass ratio of resin-based composite waste to sludge is one of 1:3, 1:4, or 1:5, the screw mixer speed is 100-200 rpm, and the time is 30-100 min; in S4, the pyrolysis temperature is 500-900℃, the heating rate is 10℃ / min, the isothermal reaction time is 60-180 min, the oxygen concentration in the device is 5-30%, and the carrier gas flow rate is 0.5-1 Nm³. 3 / h·m 2 The oxygen flow rate is 0.5~0.8 m / s; the glass fiber remaining in S5 is returned to S4 to continue participating in the pyrolysis reaction, and can be reused or used in building structures and decorative materials.

[0017] The beneficial effects of this invention are: 1. The present invention utilizes a synergistic pyrolysis treatment technology. This technology treats pollutants through pyrolysis in a low-oxygen atmosphere. The temperature required for the pyrolysis reaction is much lower than that of flaming combustion, and the reaction is relatively mild. The reaction process is highly safe and easy to control. No fuel is required throughout the process, and the cost and carbon emissions of pyrolysis treatment are far lower than those of traditional soil thermal remediation technologies such as waste incineration. It is a clean, environmentally friendly, and sustainable treatment technology.

[0018] 2. In this technology, the resin portion of resin-based composite waste is converted into pyrolysis gas and pyrolysis oil during the treatment process. This pyrolysis gas and oil provide the necessary heat for the pyrolysis process, thereby reducing the input of external energy. Simultaneously, the generation of pyrolysis oil promotes the pyrolysis process and improves pyrolysis efficiency. This invention fully utilizes the pyrolysis gas and pyrolysis oil generated from the pyrolysis of the resin portion of resin-based composite waste, while ensuring complete sludge reaction.

[0019] 3. The reaction device of this technology is concave, wider at the top and narrower at the bottom. Compared with ordinary pyrolysis furnaces with the same width at both ends, this design has a larger upper area, which is conducive to the complete combustion of the pyrolysis gas generated by the pyrolysis reaction. Since the pyrolysis gas mainly burns in the upper vacuum, the material below reacts more slowly than the material above, allowing for the complete combustion of the pyrolysis oil generated by the pyrolysis reaction. After combustion, the residue does not contain pyrolysis oil components. This furnace design allows for a more thorough reaction of the material below. Furthermore, heating devices are evenly distributed on both sides of the reaction wall, ensuring that the reactants are heated more fully and improving reaction efficiency.

[0020] 4. After the process is completed, the glass fiber in the resin composite waste will remain. This glass fiber can be directly used as an inert porous medium (to improve the air permeability of the reaction system) to continue to participate in the pyrolysis reaction and can be reused. The recovered glass fiber is intact and has good performance. Its physical and chemical properties are basically the same as those of newly produced glass fiber. It has the characteristics of high strength, corrosion resistance and high temperature resistance, and can be used in building structures and decorative materials.

[0021] 5. Valuable metals such as copper and iron in sludge can be reduced using this technology. In particular, the copper grade in this sludge is much higher than the minimum industrial grade of 0.4% for chalcopyrite deposits. Currently, my country's copper resources are scarce, and while the self-sufficiency rate is declining year by year, the demand is growing rapidly. This technology can recover and utilize copper from sludge, which can reduce the environmental harm of sludge and alleviate the continuous depletion of metal resources.

[0022] 6. Co-pyrolysis treatment can reduce the volume of resin-based composite waste and high-moisture sludge, and the amount of pollutants generated during the treatment process is small, with minimal environmental impact. It can effectively reduce the pollution caused by solid waste accumulation and realize the recycling and reuse of solid waste resources.

[0023] 7. The reactor is equipped with a paddle that can move up and down and rotate, which can mix and stir the dried and crushed sludge and fragments. Sludge and resin composite waste fragments are often piled up in clumps. This mixing component can break up the two, making the reaction more complete. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the resin-based composite waste and sludge co-processing thermal treatment device of the present invention.

[0025] Figure 2 This is a schematic diagram of the reactor structure of the co-thermal treatment device for resin-based composite waste and sludge according to the present invention.

[0026] Figure 3 A cross-sectional view of the reactor in the co-thermal treatment device for resin-based composite waste and sludge of the present invention. Figure 1 .

[0027] Figure 4 A cross-sectional view of the reactor in the co-thermal treatment device for resin-based composite waste and sludge of the present invention. Figure 2 .

[0028] Figure 5This is a schematic diagram of the internal structure of the reactor in the co-thermal treatment device for resin-based composite waste and sludge of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the second motor in the co-processing thermal treatment device for resin-based composite waste and sludge of the present invention.

[0030] Figure 7 This is a cross-sectional view of the drive component structure of the co-processing thermal treatment device for resin-based composite waste and sludge of the present invention.

[0031] Figure 8 This is a schematic diagram of the internal structure of the drive cylinder of the co-thermal treatment device for resin-based composite waste and sludge of the present invention.

[0032] Figure 9 This is a schematic diagram of the chute structure of the co-processing thermal treatment device for resin-based composite waste and sludge according to the present invention.

[0033] Figure 10 This is a schematic diagram of the mixed component structure of the co-thermal treatment device for resin-based composite waste and sludge according to the present invention.

[0034] Figure 11 This is a schematic diagram of the mixing component structure of the resin composite waste and sludge co-processing thermal treatment device of the present invention.

[0035] Figure 12 This is a cross-sectional view of the mixing component structure of the co-processing thermal treatment device for resin-based composite waste and sludge of the present invention.

[0036] Figure 13 This is a schematic diagram of the base structure of the co-thermal treatment device for resin-based composite waste and sludge according to the present invention.

[0037] Figure 14 This is a cross-sectional view of the base structure of the co-processing thermal treatment device for resin-based composite waste and sludge according to the present invention.

[0038] Figure 15 This is a schematic diagram of the stirring component structure of the co-processing thermal treatment device for resin-based composite waste and sludge of the present invention.

[0039] Figure 16 This is a cross-sectional view of the stirring component structure of the co-processing thermal treatment device for resin-based composite waste and sludge of the present invention.

[0040] Figure 17 This is a schematic diagram of the internal structure of the outer cylinder of the co-thermal treatment device for resin-based composite waste and sludge according to the present invention.

[0041] Explanation of reference numerals in the attached drawings: 100, reaction assembly; 200, drive assembly; 300, mixing assembly; 101, reactor; 102, heating coil; 103, thermocouple; 104, temperature detector; 105, digital temperature controller; 201, mounting bracket; 202, first motor; 203, second motor; 204, drive rod; 205, first bevel gear; 206, gear; 207, limiting cylinder; 208, second bevel gear; 209, drive cylinder; 301, guide cylinder; 302. 303. Center rod; 304. Base; 305. Third bevel gear; 306. Bevel gear set; 307. Mixing component; 101a. Feed inlet; 202a. Second gear; 208a. Limiting rod; 207a. Sliding bar; 209a. Sliding groove; 209b. Groove; 301a. Limiting end; 301b. Limiting strip; 303a. Notch; 303b. Fixing frame; 303c. Protrusion; 306a. Inner ring seat; 306b. Outer cylinder; 306c. Paddle; 306d. Fourth bevel gear. Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0045] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0046] Example 1 Reference Figures 1-17This is the first embodiment of the present invention, providing a device for the co-thermal treatment of resin-based composite waste and sludge. The device includes a reaction assembly 100, a drive assembly 200, and a mixing assembly 300. The reaction assembly 100 includes a reactor 101, a heating coil 102 disposed within the reactor 101, a thermocouple 103 disposed within the reactor 101, a temperature detector 104 connected to the thermocouple 103, and a digital temperature controller 105 connected to the reactor 101. The drive assembly 200 is disposed on the top of the reactor 101 and includes a mounting frame 201, a first motor 202 and a second motor 203 disposed on the mounting frame 201, and a drive rod 204 connected to the first motor 202. The mixing assembly 300 includes a first bevel gear 205 mounted on the drive rod 204, a gear 206 that rotates synchronously with the output shaft of the second motor 203, a limiting cylinder 207 fixedly connected to the gear 206, a second bevel gear 208 connected to the limiting cylinder 207, and a drive cylinder 209 sleeved outside the limiting cylinder 207; the mixing assembly 300 includes a guide cylinder 301 mounted inside the reactor 101, a central rod 302 fixedly connected to the drive cylinder 209, a base 303 sleeved outside the central rod 302, a third bevel gear 304 mounted on the central rod 302, bevel gear sets 305 symmetrically arranged on both sides of the third bevel gear 304, and stirring elements 306 symmetrically arranged on the upper and lower sides of the bevel gear sets 305.

[0047] Further reference Figures 1-2 The reactor 101 has an inlet 101a and is covered with insulation cotton. A temperature detector 104 monitors the internal temperature of the reactor 101 via a thermocouple 103. An air pump is installed at the bottom of the reactor 101 to supply oxygen into the reactor 101 through an air distributor. The treated resin-based composite waste fragments and sludge enter the reactor 101 through the inlet 101a. The reactor 101 is heated and decomposed by a heating coil 102. The heating coil 102 is set with a digital temperature controller 105 to set the process temperature. A thermocouple 103 is installed inside the reactor 101, and the temperature detector 104 monitors the temperature through the thermocouple 103. At the same time, an air pump is installed at the bottom of the reactor 101 to supply oxygen to the reactor 101 through an air distributor.

[0048] To drive the stirring component 306 to crush and mix the raw materials, the mounting frame 201 is fixedly installed on the top of the reactor 101. The first motor 202 is fixedly installed on the reactor 101. The output shaft of the first motor 202 is fixedly connected to the drive rod 204. The output shaft of the second motor 203 is fixedly equipped with a second gear 202a, which meshes with the gear 206. The limiting cylinder 207 is sleeved on the outside of the drive rod 204 and rotatably connected to the drive rod 204. A second bevel gear 208 is fixedly connected to the side wall of the limiting cylinder 207. The second bevel gear 208 meshes with the first bevel gear 205. A limiting rod 208a is also provided on the second bevel gear 208. The limiting rod 208a and the second bevel gear 208 are not concentrically arranged. The drive cylinder 209 is rotatably connected to the limiting cylinder 207. Sliding strips 207a are symmetrically arranged on the side wall of the limiting cylinder 207. The drive cylinder 209 is provided with a sliding groove 209a. The sliding strips 207a and the sliding groove 209a are slidably connected. The drive cylinder 209 extends into the reactor 101. An annular groove 209b is provided on the inner wall of the drive cylinder 209. The limiting rod 208a is embedded in the groove 209b.

[0049] refer to Figures 3-9According to the above scheme, the first motor 202 and the second motor 203 are fixed to the top of the reactor 101 by the mounting bracket 201. After the first motor 202 is started, the first motor 202 drives the drive rod 204 to rotate, and the first bevel gear 205 on the drive rod 204 rotates synchronously. It should be noted that since the gear 206 is transmitted to the second motor 203 through the second gear 202a, the meshing of the gear 206 has a self-locking property, so the gear 206 remains stationary. The limiting cylinder 20, which is fixedly connected to the gear 206... 7 also remains stationary. The rotational friction of the drive rod 204 will not affect the limiting cylinder 207. The slide bar 207a outside the limiting cylinder 207 limits the drive cylinder 209 through the slide groove 209a, so the drive cylinder 209 will not rotate. The first motor 202 only drives the drive rod 204 to rotate. The second motor 203 is started. It should be noted that the second motor 203 must ensure that the rotation direction of the drive gear 206 is opposite to the rotation direction of the drive rod 204. The second motor 203 is activated through the second gear 206. The 2a transmission causes gear 206 to rotate, which in turn drives the fixedly connected limiting cylinder 207 to rotate synchronously. When the limiting cylinder 207 rotates, on the one hand, the slide bar 207a on the limiting cylinder 207 will cause the drive cylinder 209 to rotate synchronously through the slide groove 209a. On the other hand, the second bevel gear 208 is fixed on the limiting cylinder 207. The rotation of the limiting cylinder 207 will cause the second bevel gear 208 to rotate around the limiting cylinder 207. The second bevel gear 208 also meshes with the first bevel gear 205. Therefore, the second bevel gear... 208 will rotate on the first bevel gear 205, thereby causing the limiting rod 208a on the second bevel gear 208 to move up and down in the vertical plane. The limiting rod 208a and the groove 209b form a sinusoidal mechanism. The movement of the limiting rod 208a in the vertical plane will cause the groove 209b to move up and down synchronously, that is, the drive cylinder 209 moves up and down cyclically. Through the above scheme, the two motors can make the drive cylinder 209 rotate itself while moving up and down, thereby driving the mixing component 300 to rotate and move vertically.

[0050] To crush and mix the raw materials, a drive cylinder 209 is slidably positioned inside a guide cylinder 301. A limiting end 301a is located at the bottom of the guide cylinder 301, and limiting strips 301b are symmetrically formed on the inner wall of the limiting end 301a. A notch 303a is symmetrically formed on the base 303, and the limiting strips 301b are embedded in the notch 303a. The base 303 is slidably positioned within the limiting end 301a. A third bevel gear 304 is positioned inside the base 303, and a fixing frame 303b is also provided inside the base 303. A central rod 302 passes through the fixing frame 303b and is rotatably connected to it. The outer wall of the base 303 has symmetrically formed protrusions 303c. The stirring component 306 includes an inner ring seat 306a, an outer cylinder 306b fixed outside the inner ring seat 306a, and blades 306c mounted on the outer cylinder 306b. A fourth bevel gear 306d is formed on the inner ring seat 306a. The inner ring seat 306a is connected to the protrusion 303c, and the inner ring seat 306a can fit against the protrusion 303c. The bevel gear set 305 includes two fixedly connected bevel gears. The bevel gear set 305 is rotatably mounted on the base 303. One bevel gear of the bevel gear set 305 meshes with the third bevel gear 304, and the other bevel gear meshes simultaneously with the fourth bevel gear 306d in the upper and lower stirring members 306.

[0051] refer to Figures 10-17 As can be seen from the principle of the drive assembly 200, the drive cylinder 209 rotates and moves up and down within the guide cylinder 301. The drive cylinder 209 is fixedly connected to the central rod 302, which can drive the central rod 302 to rotate and move vertically. It should be noted that the prerequisite for the stirring element 306 in the mixing assembly 300 to rotate is that the base 303 does not rotate in the horizontal direction and remains stationary. Therefore, a limiting strip 301b is set on the limiting end 301a of the guide cylinder 301, and a notch 303a is opened on the base 303. The two slide into each other, so that the base 303 does not rotate in the horizontal direction. The limiting strip 301b is vertical and will not affect the vertical movement of the base 303. When the central rod 302 rotates, the bottom third bevel gear 304 rotates, causing the bevel gears on both sides to mesh. When group 305 rotates, the bevel gear on the outer side of bevel gear group 305 meshes with the fourth bevel gears 306d at its upper and lower ends. Therefore, when it rotates, the fourth bevel gears 306d at the upper and lower ends will rotate in opposite directions. The fourth bevel gears 306d are also mounted on the inner ring seat 306a, which is sleeved on the protrusion 303c. Therefore, the inner ring seat 306a can rotate around the protrusion 303c. The outer cylinder 306b on the inner ring seat 306a and the blades 306c on the outer cylinder 306b will rotate synchronously, and the rotation directions of the stirring elements 306 at the upper and lower ends are opposite. That is, the two sets of blades 306c rotate in opposite directions, which improves the stirring efficiency. While the blades 306c are rotating, they will also move vertically up and down, which improves the mixing efficiency and makes the pyrolysis more complete.

[0052] Example 2 Reference Figures 1-17 The second embodiment of the present invention provides a method for the synergistic thermal treatment of resin-based composite waste and sludge, which includes the following steps; S1: Pre-treatment of resin composite waste is carried out using a multi-stage crushing process; after the collected resin composite waste is coarsely crushed by a large shearing device, it is crushed by a crusher, and then ground and screened. S2: Pre-treatment of high-moisture sludge; The collected high-moisture sludge is first dried, then crushed, ground and sieved to obtain pre-treated sludge; S3: The pretreated resin composite waste and the high-moisture sludge are mixed together using a spiral mixer to mix the pretreated resin composite waste and the pretreated high-moisture sludge in a certain proportion. S4: Co-thermal treatment of mixed resin-based composite waste and high-moisture sludge. After the materials are mixed evenly, they are placed in reactor 101. The pyrolysis temperature and reaction time are set. During the reaction stage, oxygen is continuously introduced at a stable flow rate until the reaction stops. S5: After the reaction is completed, the weight loss rate of the reactants and the total recovery rate of high-value metals are measured. The remaining glass fibers continue to participate in the pyrolysis reaction as an inert porous medium or are used in building structures and decorative materials.

[0053] The resin-based composite waste can include glass fiber, circuit boards, fiberglass, resin powder, and mixtures thereof, such as waste circuit boards and waste fan blades. These can all be used as raw materials in the thermal treatment method of this invention. Before co-thermal treatment, the collected resin-based composite waste is coarsely crushed using a large shearing device, then further crushed using a crusher, and finally sieved using a 100-200 mesh screen. Simultaneously, the collected high-moisture sludge is placed in an oven for drying at 105°C for 6 hours, then crushed again using a crusher, and finally sieved through a 100-200 mesh screen to obtain pretreated sludge. Then, a spiral mixer is used to mix the pretreated resin-based composite waste and the pretreated high-moisture sludge at a mass ratio of 1:3, 1:4, or 1:5. The spiral mixer speed is 100-200 rpm, and the mixing time is 30-100 minutes. Before starting the experiment, the airtightness of the entire reactor 101 is checked, and the materials are uniformly mixed and then filled into the reactor 101. The pyrolysis temperature is set at 500~900℃, the heating rate of reactor 101 is 10℃ / min, and the isothermal reaction time is 60~180min. The oxygen concentration in reactor 101 is 5~30%, and the carrier gas flow rate is 0.5~1Nm³. 3 / h·m 2The oxygen flow rate was 0.5~0.8 m / s. After the reaction, the weight loss rate of the reactants was measured to be 74.38%~80.5%, the copper oxide content in the pyrolysis solid products was 27.53%~30.7%, and the total recovery rate of high-value metals such as gold, silver, palladium, and copper was >98%. Moreover, the obtained glass fibers had intact morphology and good performance, and their physical and chemical properties were basically equivalent to those of newly produced glass fibers, making them suitable for use in building structures and decorative materials.

[0054] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0055] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0056] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for the co-thermal treatment of resin-based composite waste and sludge, characterized in that: include: The reaction assembly (100) includes a reactor (101), a heating coil (102) disposed in the reactor (101), a thermocouple (103) disposed in the reactor (101), a temperature detector (104) connected to the thermocouple (103), and a digital temperature controller (105) connected to the reactor (101). The drive assembly (200) is located on the top of the reactor (101) and includes a mounting frame (201), a first motor (202) and a second motor (203) mounted on the mounting frame (201), a drive rod (204) connected to the first motor (202), a first bevel gear (205) mounted on the drive rod (204), a gear (206) that rotates synchronously with the output shaft of the second motor (203), a limiting cylinder (207) fixedly connected to the gear (206), a second bevel gear (208) connected to the limiting cylinder (207), and a drive cylinder (209) sleeved outside the limiting cylinder (207). The mixing component (300) includes a guide cylinder (301) disposed in the reactor (101), a central rod (302) fixedly connected to the drive cylinder (209), a base (303) sleeved on the central rod (302), a third bevel gear (304) disposed on the central rod (302), a bevel gear set (305) symmetrically disposed on both sides of the third bevel gear (304), and a stirring element (306) symmetrically disposed on the upper and lower sides of the bevel gear set (305).

2. The co-thermal treatment device for resin-based composite waste and sludge as described in claim 1, characterized in that: The reactor (101) is provided with an inlet (101a), and the reactor (101) is also covered with insulation cotton. The temperature detector (104) monitors the internal temperature of the reactor (101) through a thermocouple (103). An air pump is also provided at the bottom of the reactor (101) to introduce oxygen into the reactor (101) through a blower.

3. The co-thermal treatment device for resin-based composite waste and sludge as described in claim 2, characterized in that: The mounting bracket (201) is fixedly installed on the top of the reactor (101). The first motor (202) is fixedly installed on the reactor (101). The output shaft of the first motor (202) is fixedly connected to the drive rod (204). The output shaft of the second motor (203) is fixedly equipped with a second gear (202a). The second gear (202a) meshes with the gear (206). The limiting cylinder (207) is sleeved on the outside of the drive rod (204) and rotatably connected to the drive rod (204). The side wall of the limiting cylinder (207) is fixedly connected with a second bevel gear (208). The second bevel gear (208) meshes with the first bevel gear (205). The second bevel gear (208) is also provided with a limiting rod (208a). The limiting rod (208a) and the second bevel gear (208) are not concentrically arranged.

4. The co-thermal treatment device for resin-based composite waste and sludge as described in claim 3, characterized in that: The driving cylinder (209) is rotatably connected to the limiting cylinder (207). Sliding strips (207a) are symmetrically arranged on the side wall of the limiting cylinder (207). A sliding groove (209a) is opened on the driving cylinder (209). The sliding strip (207a) is slidably connected to the sliding groove (209a). The driving cylinder (209) extends into the reactor (101). An annular groove (209b) is opened on the inner wall of the driving cylinder (209). The limiting rod (208a) is embedded in the groove (209b).

5. The co-thermal treatment device for resin-based composite waste and sludge as described in claim 4, characterized in that: The drive cylinder (209) is slidably disposed inside the guide cylinder (301). The bottom of the guide cylinder (301) is provided with a limiting end (301a). The inner wall of the limiting end (301a) is symmetrically provided with limiting strips (301b). The base (303) is symmetrically provided with notches (303a). The limiting strips (301b) are embedded in the notches (303a). The base (303) is slidably disposed inside the limiting end (301a). The third bevel gear (304) is disposed inside the base (303). The base (303) is also provided with a fixing frame (303b). The central rod (302) passes through the fixing frame (303b) and is rotatably connected to it.

6. The co-thermal treatment device for resin-based composite waste and sludge as described in claim 5, characterized in that: The base (303) has symmetrical protrusions (303c) on its outer wall. The stirring component (306) includes an inner ring seat (306a), an outer cylinder (306b) fixed outside the inner ring seat (306a), and a blade (306c) on the outer cylinder (306b). A fourth bevel gear (306d) is provided on the inner ring seat (306a).

7. The co-thermal treatment device for resin-based composite waste and sludge as described in claim 6, characterized in that: The inner ring seat (306a) is connected to the protrusion (303c), and the inner ring seat (306a) can fit against the protrusion (303c).

8. The co-thermal treatment device for resin-based composite waste and sludge as described in claim 7, characterized in that: The bevel gear set (305) includes two fixedly connected bevel gears. The bevel gear set (305) is rotatably mounted on the base (303). One end of the bevel gear set (305) meshes with the third bevel gear (304), and the other end of the bevel gear meshes with the fourth bevel gear (306d) in the upper and lower stirring components (306) at the same time.

9. A method for co-thermal treatment of resin-based composite waste and sludge, employing the co-thermal treatment device for resin-based composite waste and sludge as described in claim 8, characterized in that: Includes the following steps: S1: Pre-treatment of resin composite waste is carried out using a multi-stage crushing process; after the collected resin composite waste is coarsely crushed by a large shearing device, it is crushed by a crusher, and then ground and screened. S2: Pre-treatment of high-moisture sludge; The collected high-moisture sludge is first dried, then crushed, ground and sieved to obtain pre-treated sludge; S3: The pretreated resin composite waste and the high-moisture sludge are mixed together using a spiral mixer to mix the pretreated resin composite waste and the pretreated high-moisture sludge in a certain proportion. S4: Co-thermal treatment of mixed resin composite waste and high moisture content sludge. After the materials are mixed evenly, they are put into reactor (101). The pyrolysis temperature and reaction time are set. During the reaction stage, oxygen with a stable flow rate is continuously introduced until the reaction stops. S5: After the reaction is completed, the weight loss rate of the reactants and the total recovery rate of high-value metals are measured. The remaining glass fibers continue to participate in the pyrolysis reaction as an inert porous medium or are used in building structures and decorative materials.

10. The method for co-thermal treatment of resin-based composite waste and sludge as described in claim 9, characterized in that: In S1, the crushed resin-based composite waste is sieved using a 100-200 mesh screen. In S2, the drying temperature is 105℃, the drying time is 6 hours, and the crushed and ground sludge is sieved using a 100-200 mesh screen. In S3, the mass ratio of resin-based composite waste to sludge is one of 1:3, 1:4, or 1:5, the screw mixer speed is 100-200 rpm, and the time is 30-100 minutes. In S4, the pyrolysis temperature is 500-900℃, the heating rate is 10℃ / min, the isothermal reaction time is 60-180 minutes, the oxygen concentration in the device is 5-30%, and the carrier gas flow rate is 0.5-1 Nm³. 3 / h·m 2 The oxygen flow rate is 0.5~0.8 m / s; the glass fiber remaining in S5 is returned to S4 to continue participating in the pyrolysis reaction, and can be reused or used in building structures and decorative materials.

Images