Tubular microwave reactor

Abstract

The utility model relates to the technical field of industrial reactors, in particular to a tubular microwave reactor. The tubular microwave reactor comprises a reaction pipeline, a microwave unit, a bearing platform, a rotary driving mechanism, a dip angle adjusting mechanism and a shoveling plate mechanism. The rotary driving mechanism is used for driving the reaction pipeline to rotate so as to guide the solid reaction materials to longitudinally overturn in the reaction pipeline. The inclination angle adjusting mechanism is located below the bearing platform and used for adjusting the inclination angle of the reaction pipeline so as to guide the solid reaction materials to transversely move along the reaction pipeline. The shoveling plate mechanism is arranged along the central axis of the reaction pipeline, protrudes out of the surface of the inner wall of the reaction pipeline and is used for shoveling the solid reaction material at the bottom of the reaction pipeline. According to the microwave reaction kettle, materials can be uniformly distributed in a reaction pipeline, insoluble solid materials and liquid reaction materials can be fully mixed, and the reaction can be relatively quickly and thoroughly completed under the action of microwaves.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of industrial reactor, concretely to a tubular microwave reactor. BACKGROUND

[0002] The tubular microwave reactor takes the pipeline as the reaction place of the reaction material, and since the pipe length is several times the pipe diameter, the mixing, mass transfer and heat transfer process of the material are greatly strengthened when the reaction material flows through the pipeline, which is beneficial to significantly improving the reaction efficiency. Therefore, the tubular microwave reactor has been widely used in industrial production.

[0003] Two forms of the tubular microwave reactor are disclosed in the prior art.

[0004] One of them is disclosed in the industrialized continuous microwave reactor in Chinese patent document CN103623755A, which comprises a mixing cavity and a reaction cavity connected together through a pipeline, the pipe length of the reaction cavity is several times the pipe diameter, and a discharge port, a reaction stirring device extending into the inside of the reaction cavity, a temperature and pressure control device and multiple groups of microwave generators are arranged on the reaction cavity, the reaction stirring device is connected with a reaction speed regulating motor for controlling the speed of the reaction stirring device, each group of microwave generators is composed of an isolation pipe and a microwave generator extending into the isolation pipe, and the isolation plate is a ceramic plate or a polytetrafluoroethylene plate. The ceramic plate or the polytetrafluoroethylene plate not only can isolate the microwave generator from the reaction material, but also has good microwave penetration, so that the microwave generated by the microwave generator can directly act on the reaction material through the ceramic plate or the polytetrafluoroethylene plate.

[0005] The other is disclosed in the coil pipe type microwave reactor in Chinese patent document CN112439375A, the pipe length of the reaction cavity is larger than the pipe diameter, and the reaction cavity is in the form of a coil pipe in the equipment shell, and microwave sources are fixedly arranged on the front two sides and the back two sides of the equipment shell.

[0006] When the content of the insoluble solid material in the reaction material is high, the coil pipe type microwave reactor is prone to blockage. However, when the microwave reactor in the former form is used, the reaction material is prone to deposition, which affects the reaction efficiency, and the stirring device is also prone to damage. SUMMARY

[0007] The utility model aims at overcoming the defects of the prior art, and provides a tubular microwave reactor, so that the insoluble solid material is not easy to deposit at the bottom, and the insoluble solid material can fully contact with the liquid reaction material.

[0008] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0009] The tubular microwave reactor comprises

[0010] The reaction pipeline provides a reaction space for the material reaction, and two ends thereof are respectively a feeding end and a discharging end;

[0011] The microwave unit is arranged on the outer wall of the reaction pipeline and is used for heating the reaction material, and comprises a microwave shielding cover and a microwave generator arranged on the microwave shielding cover;

[0012] The reaction pipeline further comprises

[0013] The bearing platform is used for bearing the reaction pipeline;

[0014] The rotary driving mechanism is used for driving the reaction pipeline to rotate so as to guide the longitudinal overturning of the solid-state reaction material in the reaction pipeline;

[0015] The inclination adjusting mechanism is arranged below the bearing platform and is used for adjusting the inclination of the reaction pipeline so as to guide the lateral movement of the solid-state reaction material along the reaction pipeline;

[0016] The scooping mechanism is arranged along the central axis of the reaction pipeline and protrudes from the inner wall surface of the reaction pipeline and is used for scooping up the solid-state reaction material located at the bottom of the reaction pipeline.

[0017] The inventive concept of the present application is that the stirring device in the reaction cavity of the Chinese patent document CN103623755A is easily damaged in the high-temperature environment of the solid-state reaction material and needs frequent maintenance, and the solid-state material deposited at the bottom of the reaction cavity is also not easy to be stirred up. The structure of the converter is converted to the scheme described in the Chinese patent document CN103623755A, the solid-state reaction material is brought up from the bottom of the liquid reaction material by the rotation of the reaction pipeline, the liquid reaction material is always located at the lower part of the reaction pipeline, and the solid-state reaction material falls from the upper part of the liquid reaction material, so that the two materials can be fully contacted and rapidly reacted.

[0018] Secondly, in order to prevent the solid-state reaction material from gradually accumulating at one end of the reaction pipeline, the inclination adjusting mechanism is further arranged, which can periodically guide the solid-state reaction material to move between the feeding end and the discharging end of the reaction pipeline. At the same time, when the discharging is prepared after the reaction is completed, the feeding end is also lifted, which is beneficial to the discharge of the solid-state material.

[0019] As an improvement, the reaction pipeline is made of ceramic material, and metal end sleeves are arranged at two ends of the reaction pipeline, and the microwave unit is arranged between the metal end sleeves. The ceramic material has the characteristics of wear resistance and corrosion resistance, so that the reaction pipeline can adapt to the reaction environment containing corrosive components.

[0020] As an improvement, the microwave shielding cover is in a hexahedral shape, and one connecting sleeve for cooperating with the metal end sleeve is arranged at each end of the microwave shielding cover, so that one end of the metal end sleeve can rotate in the gap between the reaction pipeline and the connecting sleeve.

[0021] As a further improvement, the microwave shield is provided with microwave generators on all six of its faces, and 2-5 groups of microwave generators are arranged along the extension direction of the microwave shield.

[0022] As an improvement, the rotary drive mechanism comprises a driving end and a driven end, which are respectively located at two ends of the reaction tube, the driving end comprises a gear and a gear driver, the gear is fixed to the metal end sleeve, and the gear driver is installed on the bearing platform.

[0023] As an improvement, the inclination adjusting mechanism comprises a hinged end and an electric push rod end, which are respectively located at two ends of the bottom of the bearing platform.

[0024] As an improvement, the wiper mechanism is a ceramic strip or a ceramic sheet.

[0025] As an improvement, the reaction tube is provided with a rotary feeding cover at the feeding end, the rotary feeding cover is rotationally sealed with the reaction tube, and the rotary feeding cover is provided with a feeding pipe.

[0026] As a further improvement, a premixing cylinder for premixing the reaction materials is further included, the premixing cylinder is internally provided with a stirring paddle, the premixing cylinder is provided separately from the reaction tube, and the bottom of the premixing cylinder is communicated with the reaction tube through a pipeline.

[0027] As a further improvement, the stirring paddle has a paddle blade, and the paddle blade is a circular arc rod.

[0028] The beneficial effects of the present application are as follows:

[0029] Through the cooperation of the rotary drive mechanism and the inclination adjusting mechanism, the materials can be uniformly distributed in the reaction tube, so that the insoluble solid materials and the liquid reaction materials can be fully mixed, and the reaction can be relatively quickly and completely completed under the action of microwaves. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structure schematic view of the embodiment 1 of the present application;

[0031] Figure 2 It is another perspective structure schematic view of the embodiment 1 of the present application;

[0032] Figure 3 It is a sectional view of the premixing cylinder in the embodiment 1 of the present application;

[0033] Figure 4 It is a front view of the reaction zone in the embodiment 1 of the present application;

[0034] Figure 5 It is a sectional view of the reaction zone in the embodiment 1 of the present application;

[0035] Figure 6This is a right view of the reaction zone in Embodiment 1 of this utility model;

[0036] Figure 7 for Figure 5 Enlarged view of section A in the middle;

[0037] Figure 8 This is a schematic diagram of the structure of the microwave shielding cover in Embodiment 1 of this utility model;

[0038] Figure 9 This is a cross-sectional view of the premixing cylinder in Embodiment 2 of this utility model.

[0039] In the diagram: 10. Reaction pipe; 11. Metal end sleeve; 12. Rotary feed hood; 13. Feed pipe; 14. Rotary discharge hood; 141. Discharge hole; 20. Microwave unit; 21. Microwave shield; 22. Microwave generator; 23. Connecting sleeve; 30. Support platform; 40. Rotary drive mechanism; 41. Active end; 411. Gear; 412. Gear driver; 42. Driven end; 50. Tilt adjustment mechanism; 51. Hinge end; 52. Electric actuator end; 60. Lifting plate mechanism; 70. Premixing cylinder; 80. Stirring paddle; 81. Paddle blade; 82. Paddle bar; 90. Base. Detailed Implementation

[0040] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims. Example 1

[0041] like Figure 1 , Figure 2 As shown, the tubular microwave reactor described in this application comprises two main components: a reaction zone and a premixing cylinder 70. The premixing cylinder 70 stands upright on the ground, while the reaction zone is mounted entirely on a base 90. The premixing cylinder 70 and the reaction zone are connected by a flexible hose. The premixing cylinder 70 is barrel-shaped and is separately configured from the reaction pipeline 10 in the reaction zone, used for premixing the reactants. Two inlets are located at the top, and one outlet is located at the bottom. The outlet is connected to a pump to pump the thoroughly mixed material to the reaction zone.

[0042] like Figure 3As shown, the premixing cylinder 70 is provided with a stirring paddle 80 driven by a motor, the bottom of the stirring paddle 80 is provided with a paddle blade 81 which is a circular arc rod. The shape of the paddle blade 81 corresponds to the shape of the bottom of the premixing cylinder 70. Since the present application mainly aims at mixing the mixture of insoluble solid material and liquid reaction material, relatively high-speed stirring can easily cause damage to the inner wall of the premixing cylinder 70 and the stirring paddle 80. The circular arc rod of the paddle blade 81 in low-speed rotation is mainly used to push away the insoluble solid material in contact with the inner wall of the premixing cylinder 70, so that the insoluble solid material in the upper layer is repositioned, thereby realizing the mixing of the insoluble solid material, and the damage to the inner wall of the premixing cylinder 70 and the stirring paddle 80 is relatively small. The stirring paddle 80 can be made of tetrafluoroethylene material, so that the premixing cylinder 70 can adapt to corrosive reaction materials.

[0043] As shown in Figure 1 , Figures 4-6 , the reaction zone mainly includes a reaction pipeline 10 providing a reaction space for material reaction and a microwave unit 20 providing a heat source for material reaction, both of which are located on a bearing platform 30. The reaction pipeline 10 is made of ceramic material, and the two ends are respectively the feeding end and the discharging end. The reaction pipeline 10 is provided with a rotating feeding cover 12 at the feeding end, the rotating feeding cover 12 is rotationally sealed with the reaction pipeline 10, and the rotating feeding cover 12 is provided with a feeding pipe 13, the feeding pipe 13 is communicated with the premixing cylinder 70 through a hose. The reaction pipeline 10 is provided with a rotating discharging cover 14 at the discharging end, the rotating discharging cover 14 is rotationally sealed with the reaction pipeline 10, and the rotating discharging cover 14 is provided with a discharging hole 141 below the central axis of the reaction pipeline 10 to facilitate discharging. The discharging hole 141 is sealed by a sealing cover (not shown in the figure), which is opened when discharging.

[0044] As shown in Figures 4-7 , the two ends of the reaction pipeline 10 are fixed with metal end sleeves 11, and the microwave unit 20 is arranged between the metal end sleeves 11. The microwave unit 20 includes a microwave shielding cover 21 and a microwave generator 22 arranged on the microwave shielding cover 21. The microwave shielding cover 21 is in the shape of a hexahedron, and each end of the microwave shielding cover 21 is provided with a connecting sleeve 23 for cooperation with the metal end sleeve 11, so that one end of the metal end sleeve 11 can rotate in the gap between the reaction pipeline 10 and the connecting sleeve 23. As shown in Figure 8 , the microwave shielding cover 21 is provided in an upper and lower half type to facilitate installation. The lower half of the microwave shielding cover 21 is fixed to the bearing platform 30 by a support. The microwave shielding cover 21 is provided with the microwave generator 22 on each of the six faces, and three groups of microwave generators 22 are arranged along the extension direction of the microwave shielding cover 21.

[0045] As shown in Figures 1-2As shown, the bearing platform 30 is also provided with a rotary driving mechanism 40 and an inclination adjusting mechanism 50. The rotary driving mechanism 40 is used to drive the reaction pipe 10 to rotate to guide the longitudinal overturning of the solid-state reaction material inside the reaction pipe 10. The rotary driving mechanism 40 includes a driving end 41 and a driven end 42, which are respectively located at two ends of the reaction pipe 10. The driving end 41 includes a gear 411 fixed to the metal end sleeve 11 and a gear driver 412 installed on the bearing platform 30. The inclination adjusting mechanism 50 is located between the bearing platform 30 and the base 90, and is used to adjust the inclination of the reaction pipe 10 to guide the lateral movement of the solid-state reaction material along the reaction pipe 10. The inclination adjusting mechanism 50 includes a hinged end 51 and an electric push rod end 52, which are respectively located at two ends of the bottom of the bearing platform 30. The base 90 is downwardly inclined towards the feeding end of the reaction pipe 10, so that the reaction pipe 10 can be downwardly inclined towards both the feeding end and the discharging end thereof.

[0046] As shown in Figure 5 , Figure 7 , the inner wall of the reaction pipe 10 is provided with a scraper mechanism 60 arranged in a strip shape by ceramic pieces, which is arranged along the extension direction of the central axis of the reaction pipe 10 and protrudes from the inner wall surface of the reaction pipe 10, and is used to scoop up the solid-state reaction material located at the bottom of the reaction pipe 10. As an obvious deformation, the scraper mechanism 60 can also be processed into a ceramic strip and arranged transversely on the inner wall of the reaction pipe 10. Embodiment 2

[0047] The difference between this embodiment and embodiment 1 is that:

[0048] As shown in Figure 9 , the paddle 81 includes a circular arc rod and a paddle strip 82 located at the upper part of the circular arc rod. The present application mainly aims at the mixture of insoluble solid material and liquid reaction material. The insoluble solid material is generally submerged in the liquid reaction material, so the top of the mixed material is generally liquid. The paddle strip 82 located at the upper part of the circular arc rod is beneficial to stirring the liquid reaction material to promote the uniform mixing of the material.

Claims

1. A tubular microwave reactor characterized by: The utility model relates to a microwave reaction device for solid-state reaction material, which comprises a reaction pipeline (10) for providing a reaction space for reaction material, with an inlet end and an outlet end at two ends respectively; a microwave unit (20) arranged on the outer wall of the reaction pipeline (10) for heating the reaction material, comprising a microwave shielding cover (21) and a microwave generator (22) arranged on the microwave shielding cover (21); characterized in that a bearing platform (30) for bearing the reaction pipeline (10); a rotary drive mechanism (40) for driving the reaction pipeline (10) to rotate so as to guide the longitudinal overturning of the solid-state reaction material inside the reaction pipeline (10); a tilt angle adjusting mechanism (50) located below the bearing platform (30) for adjusting the tilt angle of the reaction pipeline (10) so as to guide the lateral movement of the solid-state reaction material along the reaction pipeline (10); a scooping mechanism (60) arranged along the central axis of the reaction pipeline (10) and protruding from the inner wall surface of the reaction pipeline (10) for scooping up the solid-state reaction material located at the bottom of the reaction pipeline (10).

2. The tubular microwave reactor of claim 1, wherein: The reaction pipeline (10) is made of ceramic material, and metal end sleeves (11) are arranged at two ends of the reaction pipeline (10), with the microwave unit (20) between the metal end sleeves (11).

3. The tubular microwave reactor of claim 2, wherein: The microwave shielding cover (21) is in the shape of a hexahedron, and one connecting sleeve (23) for cooperating with the metal end sleeve (11) is arranged at each end of the microwave shielding cover (21), so that one end of the metal end sleeve (11) can rotate in the gap between the reaction pipeline (10) and the connecting sleeve (23).

4. The tubular microwave reactor of claim 3, wherein: The microwave shielding cover (21) is provided with microwave generators (22) on all six faces thereof, and 2-5 groups of microwave generators (22) are arranged along the extension direction of the microwave shielding cover (21).

5. The tubular microwave reactor of claim 3, wherein: The rotary drive mechanism (40) comprises a driving end (41) and a driven end (42), which are located at two ends of the reaction pipeline (10) respectively, and the driving end (41) comprises a gear (411) and a gear driver (412), the gear (411) is fixed to the metal end sleeve (11), and the gear driver (412) is installed on the bearing platform (30).

6. The tubular microwave reactor of claim 1, wherein: The tilt angle adjusting mechanism (50) comprises a hinged end (51) and an electric push rod end (52), which are located at two ends of the bottom of the bearing platform (30) respectively.

7. The pipe microwave reactor of claim 1, wherein: The scooping mechanism (60) is a ceramic strip or a ceramic sheet.

8. The tubular microwave reactor of claim 1, wherein: The reaction pipeline (10) is provided with a rotary feeding cover (12) at the inlet end thereof, the rotary feeding cover (12) is rotationally sealed with the reaction pipeline (10), and the rotary feeding cover (12) is provided with a feeding pipe (13).

9. The pipe microwave reactor of claim 1, wherein: Further comprising a premixing cylinder (70) for premixing reaction material, which is internally provided with a stirring paddle (80) and is arranged in a separate mode from the reaction pipeline (10) and is communicated with the reaction pipeline (10) through a pipeline at the bottom.

10. The tubular microwave reactor of claim 9, wherein: The stirring paddle (80) has a paddle blade (81) in the shape of a circular arc rod.

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