Reaction kettle

Abstract

A reaction kettle, comprising a reaction main body (1), a heating assembly and a stirring assembly. The reaction main body (1) is provided with a reaction chamber (11); the heating assembly is used for heating materials in the reaction chamber (11); the stirring assembly comprises a stirring shaft (31) and a spiral stirring blade group (32) which are provided in the reaction chamber (11), the spiral stirring blade group (32) being arranged on the stirring shaft (31), and at least part of the spiral stirring blade group (32) being disconnected. During operation of the reaction kettle, the stirring shaft (31) continuously stirs materials, so as to prevent gelation due to prolonged stagnation of the materials at the corners of the reaction chamber (11); when the stirring shaft (31) rotates, the spiral stirring blade group (32) may drive the materials to move towards a discharge direction, thus continuously discharging residues after reactions, preventing the materials from staying too long in the reaction kettle, and further avoiding material gelation; spiral stirring blades are discontinuous, thus avoiding gelation on the surfaces of the stirring blades.

Description

A reactor Technical Field

[0001] The present application belongs to the technical field of plastic pyrolysis reactors, and in particular relates to a reactor. Background Art

[0002] my country's plastics market demand continues to grow, generating approximately 40 million tons of waste plastic annually, with a low recycling rate. With rising environmental awareness and increasing environmental pressure, the primary methods for disposing of plastics are currently landfill and incineration. However, plastic products have low bulk density and are difficult to decompose, making landfilling difficult to effectively reduce and render harmless in the short term. Incineration also produces large amounts of greenhouse gases and releases harmful gases such as dioxins. These treatment methods fail to effectively address the problem of "white pollution" and represent a significant waste of petrochemical resources. Consequently, the treatment of waste plastics is gradually shifting from landfill and incineration to resource utilization through physical and chemical recycling.

[0003] Chemical recycling refers to the process of breaking down discarded plastics into monomers or low-molecular compounds through chemical reactions or catalytic pyrolysis, and then using these compounds to synthesize new plastics or other useful products. It can test the closed loop of plastic to plastic. At the same time, the plastic products obtained through chemical recycling can be used in the same way as new plastics, and there is no limit to the place of use.

[0004] Currently, in the field of chemical recycling of waste plastics (catalytic pyrolysis), catalytic pyrolysis reactors exist in two forms: one is a vertical reactor and the other is a horizontal rotary kiln. Both methods have great disadvantages. The vertical reactor has the problem of not being able to achieve continuous feeding and slag discharge, and the working mode is intermittent. At the same time, the heat exchange area of ​​a single device is small, resulting in a small processing capacity of a single device. At the same time, the intermittent working mode has high energy consumption. The horizontal rotary kiln has changed the structural mode of the vertical reactor, which can achieve short-term continuous feeding and slag discharge, but its fatal problem is that it is easy to form gum inside. The chemical recycling of waste plastics refers to the decomposition of discarded plastics into monomers or low-molecular compounds through chemical reactions or catalytic cracking, and then using these compounds to synthesize new plastics or other useful products. The inner wall of the reactor needs to be cleaned after running for a period of time, otherwise it will seriously affect the heat exchange of the equipment.

[0005] Utility Model Content

[0006] The technical problem to be solved by this application is to provide a reactor that aims to solve the problem of materials in the reactor easily forming agglomerates. The reactor described herein includes a stirring assembly, which includes a stirring shaft and a spiral stirring blade set arranged on the periphery of the stirring shaft, at least a portion of which is disconnected. This structure can improve the mixing efficiency of the reaction materials during the pyrolysis of materials, especially waste plastics.

[0007] In order to solve the above technical problems, this application provides the following technical solutions.

[0008] In a first aspect, the present application provides a reactor comprising:

[0009] A reaction body, provided with a reaction chamber;

[0010] A heating component, used to heat the material in the reaction chamber;

[0011] The stirring assembly comprises a stirring shaft and a spiral stirring blade group arranged in the reaction chamber. The spiral stirring blade group is arranged on the stirring shaft, and at least a part of the spiral stirring blade group is disconnected.

[0012] In one embodiment of the first aspect, the spiral stirring blade assembly includes a first spiral stirring blade assembly, the first spiral stirring blade assembly including at least one first stirring blade, the at least one first stirring blade being arranged in a circumferential spiral around the stirring shaft. At least a portion of each pitch of the first stirring blade is disconnected, forming a first stirring blade gap.

[0013] In one embodiment of the first aspect, the first spiral stirring blade group includes a plurality of first stirring blades and a plurality of first columns, the plurality of first stirring blades are arranged in sequence, and the first column is arranged between two adjacent first stirring blades.

[0014] In one embodiment of the first aspect, along the longitudinal direction of the stirring shaft, the first column and the first stirring blade are aligned with each other.

[0015] In one embodiment of the first aspect, the single first stirring blade is spirally arranged around half of the circumference of the stirring shaft.

[0016] In one embodiment of the first aspect, the spiral stirring blade group includes a second spiral stirring blade group, the second spiral stirring blade group includes at least one second stirring blade, and the at least one first stirring blade is arranged in a circumferential spiral around the stirring shaft;

[0017] At least a portion of the second stirring blade of each pitch is disconnected to form a second stirring blade gap;

[0018] The spiral directions of the first stirring blade and the second stirring blade are opposite to each other, and the distance between the end of the first stirring blade and the stirring shaft is greater than the distance between the end of the second stirring blade and the stirring shaft.

[0019] In one embodiment of the first aspect, the pitch of the first stirring blade is helically arranged and the pitch of the second stirring blade is helically arranged equal; and / or

[0020] The reaction body is provided with a feed port, and half of the difference between the circular area formed by the rotation of the first stirring blade and the circular area formed by the rotation of the second stirring blade is equal to the cross-sectional area of ​​the inner diameter of the feed port.

[0021] In one embodiment of the first aspect, the second spiral stirring blade group includes a plurality of second stirring blades, and the plurality of second stirring blades are arranged in sequence. The first column is located between two adjacent second stirring blades, and the first column is aligned with the first stirring blade gap and the second stirring blade gap at the same time.

[0022] In one embodiment of the first aspect, the spiral angle of the spiral stirring blade group is 65-75°.

[0023] In one embodiment of the first aspect, the stirring assembly includes a driving assembly, the driving assembly is connected to one end of the stirring shaft and drives the stirring shaft to rotate; and / or

[0024] The heating assembly includes a first heater, which is arranged in the stirring shaft, and a cooling channel is provided at a position where the stirring shaft is connected to the drive assembly, the cooling channel is provided with a coolant inlet and a coolant outlet, and the cooling channel surrounds the position where the stirring shaft is connected to the drive assembly; and / or,

[0025] Two ends of the stirring shaft pass through two ends of the reaction body, and the two ends of the stirring shaft are respectively sealed and connected to the two ends of the reaction body.

[0026] In one embodiment of the first aspect, the stirring shaft is hollow, and a heating element is provided in the stirring shaft.

[0027] In one embodiment of the first aspect, the reaction body is provided with a jacket cavity, the heating assembly is provided with a second heater, the second heater is provided in the jacket cavity or the jacket cavity is provided with a heat carrier outlet and a heat carrier inlet; and / or

[0028] The reaction body is provided with a feed port, a discharge port and a gas outlet, the feed port and the discharge port are respectively provided at the two ends of the reaction body, and the gas outlet is provided at one end of the reaction body where the discharge port is located;

[0029] The reaction body is provided with a temperature sensor, and the temperature sensor is used to detect the temperature of the material in the reaction chamber.

[0030] In one embodiment of the first aspect, the reactor includes a base, the base is provided with a sliding support and a fixed support, the sliding support and the fixed support are respectively connected to the reaction body to support the reaction body, and the sliding support can slide on the base.

[0031] Compared with the prior art, the reactor in the present application has the following beneficial effects: the reactor includes a reaction body, a heating component and a stirring component. The reaction body is provided with a reaction chamber; the heating component is used to heat the material in the reaction chamber; the stirring component includes a stirring shaft and a spiral stirring blade group arranged in the reaction chamber, the spiral stirring blade group is arranged on the stirring shaft, and the stirring shaft extends along the length of the reaction chamber. When the reactor is working, the stirring shaft continuously stirs the material in the reaction chamber, preventing the material from stagnating in the corners of the reaction chamber for too long and forming glue, and when the stirring shaft rotates, the spiral stirring blade group can drive the material to move in the discharge direction, so that the reactor continuously discharges the residue after the reaction of the material, thereby preventing the material from staying in the reactor for too long, and further preventing the material from forming glue in the reactor, especially preventing the material from forming glue on the stirring blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic diagram of the overall structure of a reactor in an embodiment of the present application;

[0033] FIG2 is a perspective view of a reactor in an embodiment of the present application;

[0034] FIG3 is a structural diagram of a stirring assembly according to an embodiment of the present application;

[0035] FIG4 is a second structural diagram of a stirring assembly according to an embodiment of the present application;

[0036] FIG5 is a third structural diagram of a stirring assembly according to an embodiment of the present application;

[0037] FIG6 is a comparison diagram of the circular area formed by the rotation of the first stirring blade and the circular area formed by the rotation of the second stirring blade in an embodiment of the present application;

[0038] FIG7 is a top view of the reactor in FIG1 ;

[0039] FIG8 is a left side view of the reactor in FIG1.

[0040] In the accompanying drawings, the various reference numerals represent: 1. reaction body; 11. reaction chamber; 112. jacket chamber; 1121. heat carrier inlet; 1122. heat carrier outlet; 12. feed port; 13. discharge port; 14. air outlet; 15. temperature sensor; 31. stirring shaft; 32. spiral stirring blade group; 321. first spiral stirring blade group; 3211. first stirring blade; 3212. first column; 322. second spiral stirring blade group; 3221. second stirring blade; 33. drive assembly; 34. cooling channel; 341. coolant inlet; 342. coolant outlet; 4. base; 41. sliding support; 42. fixed support. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0043] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0044] The following describes in detail non-limiting embodiments of the present invention in conjunction with the accompanying drawings.

[0045] As shown in Figure 1, it is a schematic diagram of the overall structure of the reactor in the embodiment of the present application; as shown in Figure 2, it is a perspective view of the reactor in the embodiment of the present application; it can be seen from the figure that the reactor includes a reaction body 1, a heating component and a stirring component.

[0046] The reaction body 1 is provided with a reaction chamber 11. The reaction body 1 serves as a reaction vessel for the pyrolysis reaction, plays the role of containing materials and providing a reaction environment for the materials. The main material of the reaction body 1 can be metal, which can withstand high temperature and high pressure environments.

[0047] The heating component is used to heat the material in the reaction chamber 11 and can be set in the reaction body 1 to directly heat the material, or heat the heat carrier and then pass the heat carrier into the reaction body 1 to heat the material.

[0048] The stirring assembly may include a stirring shaft 31 and a spiral stirring blade assembly 32 disposed within the reaction chamber 11. The spiral stirring blade assembly 32 is mounted on the stirring shaft 31, and the stirring shaft 31 extends longitudinally along the reaction chamber 11. During operation, as materials are added to the reactor, the stirring assembly continuously stirs the materials, ensuring uniform mixing and heating of the different materials. Furthermore, as the stirring assembly stirs the materials, the spiral stirring blade assembly 32 drives the materials, moving the materials toward the discharge direction. The stirring assembly prevents materials from stagnating for extended periods in corners within the reaction chamber 11 and causing them to gel, and also prevents materials from remaining in the reactor for extended periods.

[0049] The technical solution of the present invention is to provide a stirring shaft 31 and a spiral stirring blade group 32 in the reaction chamber 11. When the reactor is working, the stirring shaft 31 continuously stirs the material in the reaction chamber 11 to prevent the material from stagnating in the corners of the reaction chamber 11 for too long and forming a gel. When the stirring shaft 31 rotates, the spiral stirring blade group 32 can drive the material to move in the discharge direction, so that the reactor can continuously discharge the residue after the reaction of the material, thereby preventing the material from staying in the reactor for too long and further preventing the material from forming a gel in the reactor. The discharge direction is from the feed port 12 to the discharge port 13. In a preferred embodiment, the stirring shaft 31 can be hollow and a heating element can be provided inside.

[0050] In some embodiments, as shown in FIG3 , the spiral stirring blade group 32 includes a first spiral stirring blade group 321 , and the first spiral stirring blade group 321 includes at least one first stirring blade 3211 , and the at least one first stirring blade 3211 is arranged in a circumferential spiral around the stirring shaft 31 . The circumferential spiral arrangement of the first stirring blade 3211 around the stirring shaft 31 can enable the material at one end where the reactor feed port 12 is located to move toward the reactor discharge port 13 . That is, when the stirring shaft 31 rotates, the first stirring blade 3211 drives the material in the reaction chamber 11 to move in the discharge direction. The number of first stirring blades 3211 can be one or more than two. If the number of first stirring blades 3211 is one, one first stirring blade 3211 extends spirally from one end of the stirring shaft 31 to the other end; if the number of first stirring blades 3211 is two or more, the two or more first stirring blades 3211 are connected end to end, and the two or more first stirring blades 3211 extend spirally from one end of the stirring shaft 31 to the other end. In a specific embodiment, the first stirring blade 3211 is disconnected to form a first stirring blade gap. Such a structure not only improves the material mixing efficiency, but also prevents the material from forming gel on the surface of the stirring blade.

[0051] In some embodiments, as shown in FIG3 , the first spiral stirring blade assembly 321 includes a plurality of first stirring blades 3211 and a plurality of first pillars 3212. The plurality of first stirring blades 3211 are arranged sequentially, with the first pillars 3212 positioned between adjacent first stirring blades 3211. Specifically, the first stirring blades 3211 are disconnected, allowing material to disperse from the gap between the two adjacent first stirring blades 3211 to the sides of the first stirring blades 3211. This allows for uniform mixing of different materials and prevents the materials from being isolated between adjacent first stirring blades 3211 as they move along the spiral first stirring blades 3211 toward the discharge direction, thereby preventing uniform mixing. The materials can include catalysts, plastics, and other materials. The first pillars 3212 can, on the one hand, provide resistance to the flow of material, thereby splitting the fluid flow and dispersing it. On the other hand, they can block the flow of material from the first stirring blades 3211, preventing them from tipping over and thus preventing them from failing.

[0052] In some embodiments, as shown in FIG3 , a single first stirring blade 3211 is spirally arranged around half the circumference of the stirring shaft 31 . In this way, when the material is stirred by the first stirring blade 3211 and rotates half a circle, it can spread to both sides of the gap between two adjacent first stirring blades 3211 .

[0053] In some embodiments, as shown in Figures 4-5, the spiral stirring blade group 32 includes a second spiral stirring blade group 322, and the second spiral stirring blade group 322 includes at least one second stirring blade 3221, and at least one second stirring blade 3221 is arranged in a circumferential spiral around the stirring shaft 31, and at least a portion of the second stirring blade 3221 is disconnected, forming a second stirring blade gap. The spiral directions of the first stirring blade 3211 and the second stirring blade 3221 are opposite. It can be understood that when the stirring shaft 31 rotates, the second stirring blade 3221 drives the material to move in the direction opposite to the discharge direction, so as to move in the opposite direction to the direction of movement of the material stirred by the first stirring blade 3211, so that the materials moving in the two directions collide and are evenly mixed. The distance between the end of the first stirring blade 3211 and the stirring shaft 31 is greater than the distance between the end of the second stirring blade 3221 and the stirring shaft 31, that is, the size of the first stirring blade 3211 is larger than the size of the second stirring blade 3221, and can drive more materials to move in the discharge direction than the second stirring blade 3221. In this way, when the stirring shaft 31 rotates, the stirring assembly as a whole drives the materials to move in the discharge direction. For example, as shown in Figure 4, the difference between the distance between the end of the first stirring blade 3211 and the stirring shaft 31 and the distance between the end of the second stirring blade 3221 and the stirring shaft 31 is d. With this arrangement, the first stirring blade 3211 and the second stirring blade 3221 can evenly mix the materials in the reaction chamber 11 and guide the materials to move toward the discharge port 13 one after another.

[0054] In some embodiments, the pitch of the spiral arrangement of the first stirring blade 3211 is equal to the pitch of the spiral arrangement of the second stirring blade 3221, so that the first stirring blade 3211 and the second stirring blade 3221 can intersect at the position of the first column 3212, and the material collides at the position of the first column 3212. The first column 3212 can block the flow force of the fluid formed by the material, and the material is dispersed in the gap between the two adjacent first stirring blades 3211 and / or the gap between the two adjacent second stirring blades 3221, so that different materials can be fully mixed. That is, the first column 3212 can effectively prevent the material from being accumulated and coked only by the forward and backward thrust, and the first column 3212 mainly plays a role in breaking up the accumulated materials. In a specific embodiment, along the longitudinal direction of the stirring shaft 31, the first column 3212 can be aligned with the gap between the first stirring blade and the gap between the second stirring blade.

[0055] In some embodiments, as shown in FIG6 , the spiral stirring blade group 32 includes a second spiral stirring blade group 322, and the distance between the end of the first stirring blade 3211 and the stirring shaft 31 is greater than the distance between the end of the second stirring blade 3221 and the stirring shaft 31. The reaction body 1 is provided with a feed port 12, and half of the difference between the area of ​​the circle A formed by the rotation of the first stirring blade 3211 and the area of ​​the circle B formed by the rotation of the second stirring blade 3221 is equal to the cross-sectional area of ​​the inner diameter of the feed port 12. It can be understood that the size of the first stirring blade 3211 is proportional to the amount of material driven, and the size of the second stirring blade 3221 is proportional to the amount of material driven. It is known in the above embodiment that the size of the first stirring blade 3211 is larger than that of the second stirring blade 3221. The first stirring blade 3211 can drive more materials to move in the discharge direction than the second stirring blade 3221. Then, half of the difference between the amount of material that can be driven by the first stirring blade 3211 and the amount of material that can be driven by the second stirring blade 3221 is the amount of material moved in the outlet direction. Then, the cross-sectional area of ​​the inner diameter of the feed port 12 is set to half of the difference between the area of ​​the circle A formed by the rotation of the first stirring blade 3211 and the area of ​​the circle B formed by the rotation of the second stirring blade 3221. This can make the feed amount and the reaction amount of the material in the reaction chamber equal, so that the material can fully react in the reaction chamber 11.

[0056] Exemplarily, the first spiral stirring blade group 321 and the second spiral stirring blade group 322 adopt a structure with equal inner diameter, equal pitch and unequal outer diameter. The material moving in the discharge direction is larger than the material moving in the opposite direction, so that it can not only promote the transportation of the material in the discharge direction but also control it to maintain a certain accumulation amount within each pitch; at the same time, it can also more evenly control the full contact between the material and the heating source in the reactor, thereby improving the heat exchange efficiency of the reactor. The specific operation is that half of the difference between the circular area formed by the rotation of the first stirring blade 3211 and the circular area formed by the rotation of the second stirring blade 3221 is approximately equal to the inner diameter cross-sectional area of ​​the reactor feed port 12. For example: the radius of the circle formed by the rotation of the first stirring blade 3211 is R (which can be calculated by taking the inner diameter of the reactor shell, assuming that the inner diameter of the reactor is 300mm), the radius of the circle formed by the rotation of the second stirring blade 3221 is r, and the inner diameter of the feed port 12 is 100mm (radius); that is (3.14×R 2 -3.14×r 2 )÷2=3.14×1 2 , substituting the data into the equation, we can calculate r≈264.5mm.

[0057] For example, the pitch of the first and second spiral stirring blade groups 321, 322 should be neither too large nor too small; a spiral angle of 70±5° (approximately 200 mm) is preferred. The first and second spiral stirring blade groups 321, 322 have opposite spiral conveying angles, meaning the first stirring blades 3211 and the second spiral stirring blade groups 322 are inclined in opposite directions. A large pitch will cause rapid propulsion of the material, making it difficult to achieve back-and-forth stirring of the material flow; a small pitch will easily cause material accumulation and squeezing, hindering heating and rapid pyrolysis.

[0058] In some embodiments, the second spiral stirring blade assembly 322 includes a plurality of second stirring blades 3221 arranged sequentially, with a first column 3212 located between two adjacent second stirring blades 3221. This means that the two adjacent second stirring blades 3221 are disconnected, allowing material to disperse from the gap between the two adjacent second stirring blades 3221 to both sides of the second stirring blades 3221. This allows for uniform mixing of different materials and prevents the materials from being isolated between adjacent second stirring blades 3221 as they move along the spiral second stirring blades 3221 toward the discharge direction, preventing them from mixing evenly. The materials may include catalysts, plastics, and the like. The first column 3212 can, on the one hand, provide resistance to the flow of material, thereby splitting the fluid and dispersing the fluid. On the other hand, it can block the flow of material for the second stirring blades 3221, preventing them from tipping over and thus preventing them from failing. Understandably, the material flow stirred by the first stirring blade 3211 and the material flow stirred by the second stirring blade 3221 collide at the location of the first column 3212, and material tends to accumulate at the collision point. The first column 3212 can break up the accumulated material during its rotation. In other words, the first column 3212 can effectively prevent the material from accumulating and coking due to the forward and backward thrust alone. The first column 3212 primarily serves to break up the accumulated material.

[0059] In some embodiments, as shown in Figures 1, 2, and 7, the stirring assembly includes a drive assembly 33, which is connected to one end of the stirring shaft 31 and drives the stirring shaft 31 to rotate. The drive assembly 33 includes a motor, an output shaft, a coupling, etc. The reactor is provided with a mounting base (not shown) for mounting the drive assembly 33.

[0060] In some embodiments, the heating component includes a first heater (not shown in the figure), which is arranged in the stirring shaft 31. The first heater can heat the stirring shaft 31 so that the material can be heated when it comes into contact with the stirring shaft 31. A cooling channel 34 is provided at the position where the stirring shaft 31 is connected to the drive assembly 33. The cooling channel 34 is provided with a coolant inlet 341 and a coolant outlet 342, and the cooling channel 34 surrounds the position where the stirring shaft 31 is connected to the drive assembly 33. Since the stirring shaft 31 is connected to the drive assembly 33, the cooling channel 34 is provided to cool the position where the stirring shaft 31 is connected to the drive assembly 33, thereby preventing the temperature from being transferred to the drive assembly 33, thereby preventing the drive assembly 33 from burning. The cooling method adopts coolant cooling, which has a good cooling effect, and the coolant uses tap water, which has a good cooling effect and low cost.

[0061] In some embodiments, the two ends of the stirring shaft 31 pass through the two ends of the reaction body 1, and the two ends of the stirring shaft 31 are respectively sealed and connected to the two ends of the reaction body 1. The material reaction needs to be carried out in a sealed environment to prevent the entry of external air, thereby preventing the oxygen in the air from reacting with the material to generate harmful gases, such as dioxins. Exemplarily, a sealing solution combining a packing seal and a mechanical seal is adopted at both ends of the stirring shaft 31 and the two ends of the reaction body 1, which solves the sealing problem of the reaction body 1, can achieve micro-positive pressure catalytic pyrolysis, can improve the liquid product yield of the catalytic pyrolysis of the material, and can prevent air from entering the reactor to generate dioxin pollution.

[0062] In some embodiments, as shown in FIG3 , the reaction body 1 is provided with a jacket cavity 112 , and the heating assembly is provided with a second heater (not shown in the figure). The second heater is arranged in the jacket cavity 112 , and the second heater directly heats the material in the reaction cavity 11 .

[0063] In other embodiments, as shown in FIG2 , the reaction chamber 1 is provided with a jacketed chamber 112, which is provided with a heat carrier outlet 1122 and a heat carrier inlet 1121. The heating assembly is provided with a second heater. After the second heater heats the heat carrier, the heat carrier is introduced into the jacketed chamber 112 through the heat carrier inlet 1121. The heat carrier transfers heat to the material in the reaction chamber 11 before flowing out of the heat carrier outlet 1122.

[0064] In some embodiments, as shown in Figures 1, 2, 7, and 8, the reaction body 1 is provided with a feed port 12, a discharge port 13, and a gas outlet 14. The feed port 12 and the discharge port 13 are respectively provided at both ends of the reaction body 1. In this manner, the material can be fully reacted in the reaction chamber 11. The gas outlet 14 is provided at one end of the reaction body 1 where the discharge port 13 is located.

[0065] Illustratively, waste plastic enters the reactor from the feed port 12 and is directly or indirectly heated by the first heater and the second heater inside the reactor. During the heating process, the waste plastic is continuously stirred by the stirring shaft 31 in the reaction chamber 11, and the waste plastic is heated evenly, undergoing a pyrolysis reaction to generate gaseous products and solid carbon residue. The gaseous products are discharged from the upper gas outlet 14 of the reactor, and the powdered carbon residue is discharged from the discharge port 13.

[0066] In some embodiments, the reaction body 1 is provided with a temperature sensor 15, which is used to detect the temperature of the material in the reaction chamber 11, and control the heating component to heat according to the material temperature, thereby adjusting the material temperature in the reaction chamber 11 to control the pyrolysis reaction in the reaction chamber 11.

[0067] In some embodiments, the reactor includes a base 4, which is provided with a sliding support 41 and a fixed support 42. The sliding support 41 and the fixed support 42 are respectively connected to the reaction body 1 to support the reaction body 1, and the sliding support 41 can slide on the base 4. The sliding support 41 can be moved to adjust the position of the connection with the reaction body 1, so that the reaction body 1 is placed on the base 4 more balanced.

[0068] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A reactor, characterized in that, the reactor comprises: a reaction main body provided with a reaction cavity; a heating component for heating the materials in the reaction cavity; a stirring component including a stirring shaft disposed in the reaction cavity and a spiral stirring blade group, the spiral stirring blade group is disposed on the stirring shaft, and at least a part of the spiral stirring blade group is disconnected.

2. The reactor according to claim 1, characterized in that, the spiral stirring blade group includes a first spiral stirring blade group, the first spiral stirring blade group includes at least one first stirring blade, and the at least one first stirring blade is spirally disposed circumferentially around the stirring shaft; wherein, at least a part of the first stirring blades in each pitch is disconnected to form a first stirring blade gap.

3. The reactor according to claim 2, characterized in that, the first spiral stirring blade group includes a plurality of the first stirring blades and a plurality of first columns, the plurality of first stirring blades are arranged in sequence, and the first columns are disposed between two adjacent first stirring blades.

4. The reactor as claimed in claim 3, characterized in that, along the longitudinal direction of the stirring shaft, the first column is aligned with the first stirring blade gap.

5. The reactor according to claim 3, characterized in that, a single first stirring blade is spirally disposed circumferentially around the stirring shaft by one-half turn.

6. The reactor according to claim 3, characterized in that, the spiral stirring blade group includes a second spiral stirring blade group, the second spiral stirring blade group includes at least one second stirring blade, and the at least one first stirring blade is spirally disposed circumferentially around the stirring shaft; at least a part of the second stirring blades in each pitch is disconnected to form a second stirring blade gap; wherein, the spiral directions of the first stirring blade and the second stirring blade are opposite, and the distance between the end of the first stirring blade and the stirring shaft is greater than the distance between the end of the second stirring blade and the stirring shaft.

7. The reactor according to claim 6, characterized in that, the pitch of the spiral setting of the first stirring blade is equal to the pitch of the spiral setting of the second stirring blade; and / or the reaction main body is provided with a feed inlet, and one-half of the difference between the circular areas formed by the rotation of the first stirring blade and the circular area formed by the rotation of the second stirring blade is equal to the cross-sectional area of the inner diameter of the feed inlet.

8. The reactor according to claim 6, characterized in that, the second spiral stirring blade group includes a plurality of the second stirring blades, the plurality of second stirring blades are arranged in sequence, the first column is located between two adjacent second stirring blades, and the first column is aligned with both the first stirring blade gap and the second stirring blade gap.

9. The reactor according to any one of claims 1-7, characterized in that, the spiral angle of the spiral stirring blade group is 65-75°.

10. The reactor according to any one of claims 1-7, characterized in that, the stirring component includes a driving component, the driving component is connected to one end of the stirring shaft and drives the stirring shaft to rotate; and / or The heating component includes a first heater, the first heater is disposed within the stirring shaft, and a cooling channel is provided at a position where the stirring shaft is connected to the driving component. The cooling channel is provided with a coolant inlet and a coolant outlet, and the cooling channel surrounds the position where the stirring shaft is connected to the driving component; and / or, Both ends of the stirring shaft pass through both ends of the reaction body, and both ends of the stirring shaft are hermetically connected to both ends of the reaction body respectively.

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