Reactor with dynamic catalyst fixed bed

Abstract

The present invention discloses a reactor with a dynamic catalyst fixed bed, comprising a container, a stirrer mounted on the container, a fixed bed mounted on the stirrer, a catalyst filled in the fixed bed, a mesh surface of the fixed bed, and a mesh size of the mesh surface smaller than the particle size of the catalyst, and the fixed bed rotates as the stirrer rotates. This solution can extend the service life of the catalyst and improve the use efficiency of the catalyst.

Description

Technical Field

[0001] The invention relates to a reactor, in particular to a reactor with a dynamic catalyst fixed bed. Background Art

[0002] In traditional chemical reactors, solid catalysts are usually used in fluidized beds for catalytic reactions. However, this design has some inherent problems that limit its efficiency and life in industrial applications. These inherent problems include:

[0003] 1. Specific gravity difference problem: In a heterogeneous system, catalysts with a large specific gravity difference require a high rotation speed to achieve uniform dispersion, but a high rotation speed will cause impact wear of the catalyst.

[0004] 2. Separation problem: After the reaction is completed, the catalyst needs to be separated from the product, which not only increases the complexity of the operation but also may lead to the loss of the catalyst.

[0005] 3. Blockage risk: The fluidized bed catalyst may become blocked during operation, affecting the normal operation of the reactor.

[0006] 4. Uneven flow rate: Too low flow rate on the catalyst surface may cause material coating, resulting in catalyst deactivation.

[0007] Therefore, how to achieve efficient utilization of catalysts and long-life operation is an important technical problem that current reactors need to overcome. Summary of the invention

[0008] In view of the shortcomings of the prior art, the object of the present invention is to provide a reactor with a dynamic catalyst fixed bed, which can extend the service life of the catalyst and improve the use efficiency of the catalyst.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a reactor with a dynamic catalyst fixed bed, comprising a container and an agitator installed on the container, the agitator being installed with a fixed bed, the fixed bed being filled with a catalyst, the surface of the fixed bed being configured as a mesh surface, and the mesh size of the mesh surface being smaller than the particle size of the catalyst, and the fixed bed rotates as the agitator rotates.

[0010] As a further improvement of the present invention, the agitator includes a stirring shaft and a fixing part fixed on the side of the stirring shaft, the fixing parts include at least two and are distributed along the length direction of the stirring shaft, the two ends of the fixed bed are fixedly connected to the two fixing parts, and the fixed bed forms stirring blades, the surface of the fixed bed has mesh holes, and the fixed bed rotates with the fixed bed.

[0011] As a further improvement of the present invention, the stirrer includes a stirring shaft and a stirring blade fixed on the stirring shaft, the stirring blade is provided with a through hole whose size is adapted to the fixed bed, and the fixed bed is fixedly connected in the through hole.

[0012] As a further improvement of the present invention, a plurality of groups of row pipes are provided on the inner wall of the container at circumferential positions corresponding to the stirring blades, and each group of row pipes forms a spoiler in the container to cooperate with the fixed bed to increase the contact effect between the material and the catalyst.

[0013] As a further improvement of the present invention, the stirring blade is a straight plate, and the length direction of the stirring blade corresponds to the length direction of the stirring shaft, and the side surface of the stirring blade is fixedly connected to the radial surface of the stirring shaft.

[0014] As a further improvement of the present invention, the stirring blade is a spiral surface and is fixedly connected to the stirring shaft, forming a stirring structure for conveying materials downward or upward along with the stirring shaft.

[0015] As a further improvement of the present invention, a conical auxiliary blade is arranged at the bottom of the stirring shaft, and the auxiliary blade has a conical structure, and the tip position of the auxiliary blade is fixed corresponding to the end of the bottom of the stirring shaft; a plurality of spiral lines radiate outward from the tip position on the conical surface of the auxiliary blade, and the stirring shaft conveys materials through the spiral lines during rotation; the direction in which the spiral lines convey materials is opposite to the direction in which the stirring blades convey materials, so as to reduce the impact of the materials on the catalyst.

[0016] As a further improvement of the present invention, there is a spacing between the auxiliary blade and the stirring blade, and the lower end of the row pipe is located between the spacing.

[0017] As a further improvement of the present invention, a bearing seat is provided at the bottom of the container, and a connecting shaft is provided at the position of the bottom of the auxiliary blade corresponding to the bearing seat. The auxiliary blade is rotatably connected to the bearing seat through the connecting shaft, and one end of the auxiliary blade corresponding to the stirring shaft is circumferentially fixedly connected to the stirring shaft through a coupling; the radial edge of the auxiliary blade intersects with the row pipe in the longitudinal projection.

[0018] As a further improvement of the present invention, one end of the bearing seat below the auxiliary blade is set to a conical structure, and the connecting shaft is located at the tip of the conical structure. The surface of the cone is provided with a spiral line, and the spiral line below and the spiral line above form a conveying direction of the material in opposite directions when rotating.

[0019] The beneficial effect of the present invention is that the position with the maximum material flow rate will be at the position of the agitator. Through this design, the position of the fixed bed can maintain a large flow rate, thereby preventing the material flow rate from being too slow, causing the catalyst to be wrapped by the material, affecting the catalytic effect, and reducing the use efficiency of the catalyst. In addition, during the rotation process, the catalyst rotates with the rotation of the agitator and can move with the material, which can alleviate the direct impact force of the material, avoid excessive wear of the catalyst, extend the service life of the catalyst, and effectively improve the efficiency of the material reaction process. In addition, the catalyst will not be dispersed in the material, hit and worn by the agitator, and there is no need to filter and separate the catalyst through an additional filtering procedure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the straight plate structure stirring blade of the present invention;

[0021] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0022] Figure 3 It is a schematic diagram of the structure of the stirring blade with a guide tube of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the disk edge having stirring blades according to the present invention;

[0024] Figure 5 It is a structural schematic diagram of the installation state of the fixing member and the stirring blade of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the agitator with auxiliary blades of the present invention;

[0026] Figure 7 It is a schematic diagram of the application position of the quick-release structure of the present invention;

[0027] Figure 8 It is an exploded schematic diagram of the quick-disassembly structure of the present invention;

[0028] Fig. 9 It is a schematic diagram of the side structure of the quick-release structure of the present invention;

[0029] Figure numbers: 1. container; 2. agitator; 21. agitator shaft; 22. fixing piece; 23. agitator blade; 24. auxiliary blade; 3. fixed bed; 4. row pipe; 5. bearing seat; 6. coupling; 7. quick-release structure; 71. fixing plate; 711. first curling edge; 712. square through hole; 72. mounting piece; 721. second curling edge; 73. lock. DETAILED DESCRIPTION

[0030] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.

[0031] Reference Figure 1-9 As shown,

[0032] A reactor with a dynamic catalyst fixed bed comprises a container 1, an agitator 2 installed on the container 1, a fixed bed 3 installed on the agitator 2, the fixed bed 3 is filled with a catalyst, the surface of the fixed bed 3 is set as a mesh surface, and the mesh size of the mesh surface is smaller than the particle size of the catalyst, and the fixed bed 3 rotates as the agitator 2 rotates.

[0033] The fixed bed 3 in this scheme will rotate with the rotation of the agitator 2. In the container 1, the position with the maximum material flow rate will be at the position of the agitator 2. Through this design, the position of the fixed bed 3 can maintain a large flow rate, thereby avoiding the material flow rate being too slow, causing the catalyst to be wrapped by the material, affecting the catalytic effect, and causing the use efficiency of the catalyst to decrease. Moreover, during this rotation process, the catalyst rotates with the rotation of the agitator 2 and can move with the material, which can alleviate the direct impact force of the material, avoid excessive wear of the catalyst, extend the service life of the catalyst, and can also effectively improve the efficiency of the material reaction process. For example, in the prior art, if the catalyst wears too quickly, it may cause the size of the catalyst to decrease and escape from the fixed bed 3, affecting the quality of the material.

[0034] By driving the catalyst in forward and reverse directions regularly, both sides of the catalyst can be evenly acted on. On the one hand, it can avoid excessive wear of the catalyst on the commonly used surface, and on the other hand, it can avoid the material coating on the back of the commonly used surface, which would affect the catalytic effect.

[0035] As a fixing solution for the fixed bed 3, two optional implementation schemes are provided below:

[0036] 1. The stirrer 2 includes a stirring shaft 21 and a fixing member 22 fixed to the side of the stirring shaft 21 (refer to Figure 5 As shown), the fixing member 22 includes at least two, and is distributed along the length direction of the stirring shaft 21, the two ends of the fixed bed 3 are fixedly connected to the two fixing members 22, and the fixed bed 3 forms a stirring blade 23, the surface of the fixed bed 3 has meshes, and rotates with the fixed bed 3. In this scheme, the fixing member 22 can be a fixed rod, fixed to the side of the stirring shaft 21, and rotates with the stirring shaft 21. The two fixing rods can fix the fixed bed 3 at the upper and lower ends of the fixed bed 3, including connecting with bolts, fixing by welding, etc. In this scheme, the fixed bed 3 can form the effect of the stirring blade 23 with the catalyst filled inside it, and the stirring effect is formed with the rotation of the stirring shaft 21. Based on this structure, the volume of the fixed bed 3 can be enlarged, the filling amount of the catalyst can also be increased, and the reaction efficiency can also be improved. It has very obvious characteristics for occasions with low stirring flow rate requirements, which can have both a small stirring flow rate and the effect of high efficiency of the catalyst.

[0037] 2. The stirrer 2 includes a stirring shaft 21 and a stirring blade 23 fixed to the stirring shaft 21 (see Figure 1 As shown), the stirring blade 23 is provided with a through hole whose size is adapted to the fixed bed 3, and the fixed bed 3 is fixedly connected in the through hole. In this embodiment, the stirring blade 23 is provided with a through hole, which can be used to fix the fixed bed 3. When the stirring blade 23 is stirring, the fixed bed 3 will actively contact the material with the stirring blade 23, and the catalyst can also be actively contacted with the material, and the fixed bed 3 moves in the same direction as the stirring blade 23 and the material, which can alleviate the impact on the catalyst. Moreover, the fixed bed 3 is a three-dimensional structure, and the catalyst is filled inside, which means that it has a certain thickness. The stirring blade 23 presents a thinner sheet structure, so the thickness of the fixed bed 3 will exceed the stirring blade 23. As the stirring blade 23 rotates, the material will move along the surface of the stirring blade 23, and will enter the fixed bed 3 from the side of the fixed bed 3 to contact the catalyst. That is, the material can not only enter the fixed bed 3 from the front side to cooperate with the catalyst, but also enter the fixed bed 3 from the side, which can increase the contact area between the material and the catalyst, make the material be washed over a larger surface, and alleviate the problem of material coating on the catalyst.

[0038] Based on the above second embodiment, the following optimization can be made: a plurality of groups of row pipes 4 are provided on the inner wall of the container 1 at the circumferential position corresponding to the stirring blades 23, and each group of row pipes 4 constitutes a spoiler in the container 1 to cooperate with the fixed bed 3 to increase the contact between the material and the catalyst. The row pipe 4 is used to introduce a heat source or a cold source to adjust the reaction temperature in the container 1. The distribution of the row pipe 4 can constitute a spoiler. When the stirring blade 23 drives the material to rotate, it will contact the row pipe 4, which can not only cause disturbance at the row pipe 4 to allow the temperature to be better mixed in the material, but also allow the material after the disturbance to have a certain radial flow direction, so that the material can be more evenly contacted with the catalyst.

[0039] In the above scheme, the fixed bed 3 and the through hole on the stirring blade 23 can be installed by quick disassembly and quick assembly. For example, a quick disassembly structure 7 is set at the position corresponding to the through hole on the stirring blade 23 to quickly disassemble and assemble the fixed bed 3. Figures 7-9As shown in , it includes a fixing sheet 71 fixed on the stirring blade 23, a mounting member 72 fixed on the fixed bed 3, first curling edges 711 are arranged on both sides of the fixing sheet 71, and a gap is formed between the first curling edge 711 and the fixing sheet 71 after the first curling edge 711 is rolled up, which can be used for the mounting member 72 to be inserted, and the thickness of the mounting member 72 is not greater than the gap, and the mounting member 72 is provided with a second curling edge 721 at a position corresponding to the first curling edge 711, and the second curling edge 721 is inserted into the space where the first curling edge 711 is rolled up, and the first curling edge 711 and the second curling edge 721 are both It is formed by winding and has elasticity. After the second curled edge 721 is inserted into the first curled edge 711, an elastic interference fit will be formed. A square through hole 712 is provided at a position corresponding to the center of the fixed plate 71, and an elastic lock buckle 73 is provided at a position corresponding to the through hole on the mounting member 72. The lock buckle 73 is formed by punching the mounting member 72, and has elastic force after bending, and extends into the square through hole 712 of the fixed plate 71 through the elastic force, so that the fixed plate 71 and the mounting member 72 form a match, and then the fixed bed 3 is installed on the stirring blade 23 without falling off.

[0040] When installing the fixed bed 3, first align the mounting piece 72 with the fixing plate 71, and allow the second curled edge 721 of the mounting piece 72 to be plugged into the first curled edge 711. At this time, it is necessary to press the lock buckle 73 first to deform the lock buckle 73, so that the first curled edge 711 and the second curled edge 721 can be smoothly plugged into each other, so that the lock buckle 73 can be attached to the surface of the fixing plate 71 to reach the position of the square through hole 712, and the lock buckle 73 pops out into the square through hole 712 with the elastic force. The size of the directional through hole is adapted to the lock buckle 73, which can reduce the relative shaking between the fixing plate 71 and the mounting piece 72.

[0041] The number of the fixing plate 71 and the mounting member 72 can be two, both of which are located on the same side of the fixed bed 3, and a plug plate is set at the position of the mounting member 72 on the other side of the fixed bed 3, and a slot is set at the position of the plug plate on the stirring blade 23. The depth of the slot is greater than the length of the plug plate, and at least a certain gap is left between the mounting member 72 and the fixing plate 71 after the plug plate is inserted into the slot, and the fixed bed 3 can slide, so that the mounting member 72 can be installed in conjunction with the fixed bed 3.

[0042] Regarding the shape of the stirring blade 23, three optional solutions are provided below:

[0043] 1. The stirring blade 23 is a straight plate (refer to Figure 1 and 2 As shown), the length direction corresponds to the length direction of the stirring shaft 21, and the side of the stirring blade 23 is fixedly connected to the radial surface of the stirring shaft 21.

[0044] The straight plate can maximize the contact area between the stirring blade 23 and the material, maximize the stirring force, make the catalyst in the fixed bed 3 interact with the material more directly, and can produce a more direct cooperation with the drain pipe 4.

[0045] 2. The stirring blade 23 is a spiral surface (refer to Figure 3 and 6 As shown), and fixedly connected to the stirring shaft 21, a stirring structure for conveying materials downward or upward is formed along with the stirring shaft 21. The spiral surface can provide a stirring effect different from the above, with radial and longitudinal stirring effects, and can allow the material to form circumferential and axial flows. Moreover, the fixed bed 3 is fixed on the stirring blades 23 of the spiral surface, which can allow the material to pass through the fixed bed 3 during the axial flow process. By cooperating with the axial thrust generated by the stirring blades 23 of the spiral surface, the material can pass through the fixed bed 3 and contact the catalyst both circumferentially and axially, which can increase the contact surface of each catalyst. At the same time, the flow rate of the material passing through the catalyst can be controlled to avoid excessive wear of the catalyst due to excessive flow rate. By regularly rotating the stirring shaft 21 forward and reversely, an opposite axial flow can also be formed, allowing the catalyst to contact the material evenly and reducing the problem of coating deactivation.

[0046] 3. The stirring blade 23 is a disc structure (refer to Figure 4 As shown), inclined blades can be added to the edge of the disc structure, and the fixed bed 3 can be on the blades or on the disc; when the fixed bed 3 is arranged on the disc, an axial thrust is formed by the blades, and the material flows axially through the fixed bed 3 on the disc; and when the fixed bed 3 is arranged on the blades, it can produce an effect similar to that of the stirring blade 23 with a spiral surface.

[0047] 4. The stirring blade 23 includes a guide tube and blades fixed to the stirring shaft 21 or the guide tube (refer to Figure 3 As shown), the guide tube can be used to guide and increase the flow rate. This blade adopts a spiral curved surface structure, in which the position of the fixed bed 3 corresponds to the guide tube. The guide tube can be used to guide the material to pass through the fixed bed 3 more concentratedly, and the cooperation with the catalyst is more stable.

[0048] The fixed beds 3 mentioned above are all of mesh structure, so when the materials pass through the fixed beds 3, a cutting effect is produced, which helps to eliminate bubbles.

[0049] In order to further extend the service life of the catalyst, the following options are available (see Figure 6As shown in the figure, a conical auxiliary blade 24 is provided at the bottom of the stirring shaft 21. The auxiliary blade 24 is a conical structure, and the tip position of the auxiliary blade 24 corresponds to the end of the bottom of the stirring shaft 21 for fixing; a plurality of spiral lines radiate outward from the tip position on the conical surface of the auxiliary blade 24, and the stirring shaft 21 conveys materials through the spiral lines during rotation; the direction in which the spiral lines convey materials is opposite to the direction in which the stirring blades 23 convey materials, so as to reduce the impact of the materials on the catalyst.

[0050] The auxiliary blade 24 can form a flow guide through the surface of the conical structure, and at the same time, cooperate with the spiral line to generate thrust on the material. The thrust is opposite to the stirring blade 23, which can slow down the speed of the material flowing through the catalyst and maintain the flow without generating dead angles that cause the material to be coated on the catalyst. At the same time, it can also increase the catalytic reaction time. Moreover, the conical surface cooperates with the axial flow to guide the material to form a circulation. As the stirring shaft 21 switches forward and reverse, the thrust direction generated by the auxiliary blade 24 will also change, but it will remain opposite to the stirring shaft 21. Of course, in terms of effect, it is preferred that the auxiliary blade 24 sends the material to the stirring blade 23, and the stirring blade 23 sends the material to the auxiliary blade 24, so as to provide buffering. The thrust generated by the auxiliary blade 24 is small, and can only serve as a buffer without affecting the circumferential flow of the material.

[0051] Preferably, there is a spacing between the auxiliary blade 24 and the stirring blade 23, and the lower end of the row pipe 4 is located between the spacing.

[0052] Based on this structure, the auxiliary blades 24 are located below the row pipes 4, and there is a certain space for the auxiliary blades 24 to push the material, reducing the turbulence of the row pipes 4, which causes the thrust generated by the auxiliary blades 24 to be insufficient, and unable to provide sufficient buffering effect on the material.

[0053] Moreover, under this structure, there are multiple row pipes 4, which are evenly distributed on the inner wall of the container 1, which can constitute a rectifying effect. The space between the two row pipes 4 can allow the material circulation to form a certain longitudinal effect. When the circulation state is inside up and outside down, the position between the two row pipes 4 can guide the material to move to the conical surface above the auxiliary leaf 24, so as to facilitate the cooperation with the auxiliary leaf 24.

[0054] Preferably, in order to facilitate disassembly, assembly and cleaning, a bearing seat 5 is provided at the bottom of the container 1, and a connecting shaft is provided at the position of the bottom of the auxiliary blade 24 corresponding to the bearing seat 5. The auxiliary blade 24 is rotatably connected to the bearing seat 5 through the connecting shaft, and one end of the auxiliary blade 24 corresponding to the stirring shaft 21 is circumferentially fixedly connected to the stirring shaft 21 through a coupling 6; the radial edge of the auxiliary blade 24 intersects with the row pipe 4 in the longitudinal projection.

[0055] The coupling 6 can adopt a plug-in structure coupling 6, which can be fixed circumferentially, but is in a detachable structure in the axial direction. As shown in the figure, the agitator 2 is installed in the up and down directions, the driving component is fixed on the top of the container 1, and the auxiliary blade 24 is installed at the bottom of the container 1. When the agitator 2 is installed in the container 1, the bottom of the agitator shaft 21 is connected to the auxiliary blade 24 through the coupling 6, and the bottom of the auxiliary blade 24 is connected to the bearing seat 5, which allows the auxiliary blade 24 to work in a stable state and is convenient to remove for cleaning, reducing sanitary dead corners. Because it is an axial plug-in installation method, it is also possible to provide an installation error of the agitator 2 on the container 1, and the agitator shaft 21 does not need to form a tight contact with the auxiliary blade 24 in the axial direction.

[0056] In a further configuration, one end of the bearing seat 5 below the auxiliary blade 24 is configured as a conical structure, and the connecting shaft is located at the tip of the conical structure. A spiral line is provided on the surface of the cone, and the spiral line below and the spiral line above convey the material in opposite directions when rotating.

[0057] The lower part of the auxiliary blade 24 is also a conical structure. The thrust of the spiral line below and the spiral line above are opposite, which can cooperate above and below the auxiliary blade 24 to always maintain the turbulent effect, reduce dead angles, and help material mixing and reaction.

[0058] It should be added that the Figures 1 to 6 The fixed bed 3 has a certain thickness, and the thickness exceeds the thickness of the stirring blade 23, which is not shown in the drawings, but does not affect the understanding of the present solution by those skilled in the art.

[0059] The fixed bed 3 can also be additionally installed on the auxiliary leaf 24. For example, the auxiliary leaf 24 is set as a cavity and used to fill the catalyst. The spiral line on the surface is used for attraction or discharge. The surface of the auxiliary leaf 24 is a mesh surface, which can be used for material entry and exit. For example, when the auxiliary leaf 24 is rotating, the material is transmitted upward through the spiral line above. The material will enter the auxiliary leaf 24 from the side of the auxiliary leaf 24, and the material will be transmitted upward under the thrust generated by the spiral line on the material. At this time, the material will not only pass through the catalyst to cooperate with the catalyst, but also be discharged with the material in the auxiliary leaf 24 with the thrust. The spiral line below can also produce a similar effect, and with the change of the rotation direction, the material can be evenly washed by the material, so that the catalyst is not easily covered by the material and inactivated. In addition, the auxiliary leaf 24 is easy to disassemble, which is convenient for subsequent cleaning and maintenance.

[0060] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A reactor having a dynamic catalyst fixed bed, characterized in that: It comprises a container and a stirrer mounted on the container, wherein a fixed bed is mounted on the stirrer, the fixed bed is filled with a catalyst, the surface of the fixed bed is configured as a mesh surface, and the mesh size of the mesh surface is smaller than the particle size of the catalyst, and the fixed bed rotates as the stirrer rotates; The stirrer comprises a stirring shaft and a stirring blade fixed on the stirring shaft, the stirring blade is provided with a through hole whose size matches that of the fixed bed, and the fixed bed is fixedly connected in the through hole; A plurality of spoilers are also provided on the inner wall of the container at circumferential positions corresponding to the stirring blades to prevent the material from swirling. The spoilers are formed by winding the pipes used for heat exchange in the container to cooperate with the fixed bed to increase the contact between the material and the catalyst. The stirring blade is a spiral surface and is fixedly connected to the stirring shaft, forming a stirring structure that conveys the material downward or upward along with the stirring shaft; A conical auxiliary blade is arranged at the bottom of the stirring shaft. The auxiliary blade is a conical structure, and the tip position of the auxiliary blade is fixed corresponding to the end of the bottom of the stirring shaft; a plurality of spiral lines radiate outward from the tip position on the conical surface of the auxiliary blade, and the stirring shaft conveys materials through the spiral lines during rotation; the direction in which the spiral lines convey materials is opposite to the direction in which the stirring blades convey materials, so as to reduce the impact of the materials on the catalyst.

2. The reactor with a dynamic catalyst fixed bed according to claim 1, characterized in that: The agitator includes a stirring shaft and a fixing part fixed on the side of the stirring shaft, the fixing parts include at least two and are distributed along the length direction of the stirring shaft, the two ends of the fixed bed are fixedly connected to the two fixing parts, and the fixed bed forms stirring blades, the surface of the fixed bed has mesh holes, and the fixed bed rotates with the fixed bed.

3. The reactor with a dynamic catalyst fixed bed according to claim 1, characterized in that: The stirring blade is a straight plate, and the side surface of the stirring blade is fixedly connected to the radial surface of the stirring shaft.

4. The reactor with a dynamic catalyst fixed bed according to claim 1, characterized in that: There is a distance between the auxiliary blade and the stirring blade, and the lower end of the row pipe is located between the distance.

5. The reactor with a dynamic catalyst fixed bed according to claim 4, characterized in that: A bearing seat is arranged at the bottom of the container, and a connecting shaft is arranged at the position of the bottom of the auxiliary blade corresponding to the bearing seat. The auxiliary blade is rotatably connected to the bearing seat through the connecting shaft, and one end of the auxiliary blade corresponding to the stirring shaft is circumferentially fixedly connected to the stirring shaft through a coupling; the radial edge of the auxiliary blade intersects with the row pipe in the longitudinal projection.

6. The reactor with a dynamic catalyst fixed bed according to claim 5, characterized in that: One end of the bearing seat below the auxiliary blade is set as a conical structure, and the connecting shaft is located at the tip of the conical structure. The surface of the cone is provided with a spiral line, and the spiral line below and the spiral line above convey the material in opposite directions when rotating.

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