Dynamic reverse-flow coal-based alkane deep refining device

Abstract

The invention relates to the technical field of coal-based alkanes, and discloses a dynamic reverse flow type coal-based alkane deep refining device which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a supporting frame, the upper surface of the supporting frame is fixedly connected with a stirring box, and the upper surface of the stirring box is fixedly connected with a feeding port. A preheater is fixedly connected to the upper surface of the bottom plate, one end of a first connecting pipe is fixedly connected to the outer wall of the preheater, the other end of the first connecting pipe is fixedly connected to the interior of the stirring box, a rotating bed reactor is fixedly connected to the interior of the bottom plate, and a hydrogen guide pipe is fixedly connected to the outer wall of the rotating bed reactor; and the bottom end of the rotating bed reactor is fixedly connected with a discharging guide pipe. Two-way convection stirring is formed through opposite rotation of the second stirring blade and the first stirring blade of the stirring assembly, the mixing effect is enhanced, the pretreatment requirements of raw materials with different viscosities can be met, and uniform and stable feeding conditions are provided for subsequent reaction.

Description

Technical Field

[0001] This invention relates to the field of coal-based alkane technology, specifically to a dynamic countercurrent coal-based alkane deep refining device. Background Technology

[0002] Coal-based alkanes, as important products of coal conversion, are increasingly widely used in fuels, chemical raw materials, and other fields. Deep refining technology is crucial for improving product quality and expanding application scenarios. Dynamic countercurrent refining processes, due to their advantages such as high mass transfer efficiency and fast reaction rates, have become one of the core technologies for the deep processing of coal-based alkanes. The homogenization and mixing of raw materials and the filtration of impurities in the pretreatment stage are key steps to ensure the efficiency of the subsequent dynamic countercurrent reaction, necessitating efficient stirring and filtration components to optimize the raw material processing effect.

[0003] Existing coal-based alkane refining units often employ single-shaft agitators or simple paddle structures for their pretreatment stirring components. This makes it difficult to achieve sufficient convective mixing in high-viscosity raw material systems, resulting in insufficient homogenization of the raw materials. This not only affects the pretreatment effect but may also lead to uneven feeding into subsequent reaction units, thereby reducing the overall refining efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dynamic countercurrent coal-based alkane deep refining device. This solves the problem that existing technologies, which mostly employ single-shaft stirring or simple paddle structures, struggle to achieve sufficient convective mixing in high-viscosity raw material systems, resulting in insufficient homogenization of raw materials, uneven feeding into subsequent reaction units, and consequently reduced overall refining efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dynamic countercurrent coal-based alkane deep refining device, comprising a base plate, a support frame fixedly connected to the upper surface of the base plate, a mixing tank fixedly connected to the upper surface of the support frame, a feed inlet fixedly connected to the upper surface of the mixing tank, a preheater fixedly connected to the upper surface of the base plate, one end of a connecting pipe fixedly connected to the outer wall of the preheater, the other end of the connecting pipe fixedly connected to the inside of the mixing tank, a rotating bed reactor fixedly connected to the inside of the base plate, a hydrogen conduit fixedly connected to the outer wall of the rotating bed reactor, a discharge conduit fixedly connected to the bottom of the rotating bed reactor, one end of a connecting pipe fixedly connected to the outer wall of the preheater, the other end of the connecting pipe fixedly connected to the top of the rotating bed reactor, a feed pump disposed on the outer wall of the connecting pipe, a stirring assembly disposed on the outer wall of the mixing tank, and a filter assembly disposed on the inner wall of the mixing tank.

[0006] Preferably, the stirring assembly includes a motor, the outer wall of which is fixedly connected to the outer wall of the stirring tank, the output end of which is rotatably connected to the inside of the stirring tank and fixedly connected to a stirring rod, the outer wall of which is rotatably connected to the inside of the stirring tank, a stirring blade fixedly connected to the outer wall of which, and a gear fixedly connected to the outer wall of which.

[0007] Preferably, the stirring assembly further includes a second gear, the tooth end of the second gear meshing with the tooth end of the first gear, a second stirring rod fixedly connected inside the second gear, the outer wall of the second stirring rod rotatably connected inside the stirring box, and a second stirring blade fixedly connected to the outer wall of the second stirring rod.

[0008] Preferably, the stirring assembly further includes a sliding column one, the outer wall of which is fixedly connected to the inside of a gear one, a rectangular rod one is rotatably connected to the outer wall of the sliding column one, a sliding column three is rotatably connected to the inside of the rectangular rod one, an L-shaped frame is slidably connected to the outer wall of the sliding column three, and the outer wall of the L-shaped frame is fixedly connected to the outer wall of the stirring tank.

[0009] Preferably, the stirring assembly further includes a sliding column two, the outer wall of which is fixedly connected to the inside of the gear two, and a rectangular rod two is rotatably connected to the outer wall of the sliding column two.

[0010] Preferably, the inner part of the rectangular rod two is rotatably connected to the outer wall of the sliding column three, the outer wall of the sliding column three is fixedly connected to a U-shaped frame, and the outer wall of the sliding column three is fixedly connected to a sliding rod.

[0011] Preferably, a rectangular block is fixedly connected to the outer wall of the sliding rod, and a spoiler is fixedly connected to the bottom end of the sliding rod.

[0012] Preferably, the filter assembly includes a fixing block, one end of a spring is fixedly connected to the upper surface of the fixing block, and the other end of the spring is fixedly connected to a rectangular frame, the outer wall of which is provided with a rectangular groove.

[0013] Preferably, the filter assembly further includes a filter screen, the outer wall of which is fixedly connected to the inner wall of the rectangular frame.

[0014] Preferably, the filter assembly further includes a slider, the outer wall of which is fixedly connected to the inner wall of the rectangular groove, and the outer wall of which is slidably connected to the inner wall of the rectangular block.

[0015] Working principle: Coal-based alkane feedstock enters the mixing tank through the feed inlet. Under the action of the stirring components, it is initially mixed and impurities are filtered out. The pretreated feedstock flows into the preheater through connecting pipe one. The preheated feedstock is then transported to the top of the rotating bed reactor through connecting pipe two and the feed pump. At the same time, hydrogen is injected from the bottom through the hydrogen conduit. The gas and liquid phases come into countercurrent contact in the rotating bed to complete the hydrogenation and refining reaction. The reaction product is discharged from the bottom of the rotating bed reactor through the discharge conduit and enters the subsequent separation unit.

[0016] When the motor is started, it causes the stirring rod to rotate inside the mixing tank, simultaneously driving the stirring blade to rotate. During the rotation of the stirring rod, the gear 1 rotates, which in turn drives the stirring rod 2 to rotate inside the mixing tank via the gear 2, causing the stirring blade 2 to rotate. The rotation of the stirring blade 1 and the stirring blade 2 creates bidirectional convection mixing, which can effectively enhance the mixing effect. During the rotation of the gears, the gears drive the sliding column 1 and the sliding column 2 to rotate in a circular motion, which in turn drives the rectangular rod 1 and the rectangular rod 2 to rotate on the outer wall of the sliding column 3, thereby driving the sliding column 3 to slide up and down within the L-shaped frame. This causes the baffle connected to the sliding rod to perform vertical reciprocating motion, creating disturbance inside the mixing tank through the baffle.

[0017] As the sliding rod moves up and down repeatedly, it drives the rectangular block to move up and down repeatedly. During the reciprocating movement of the rectangular block, it slides intermittently on the outer wall of the slider and causes the rectangular frame to vibrate under the action of the spring. The continuous vibration of the filter screen effectively traps coal-based particulate impurities.

[0018] This invention provides a dynamic countercurrent coal-based alkane deep refining device. It has the following beneficial effects:

[0019] 1. The present invention forms bidirectional convection stirring by opposing rotation of stirring blade 2 and stirring blade 1 of the stirring assembly, which enhances the mixing effect and can adapt to the pretreatment requirements of raw materials with different viscosities, providing uniform and stable feeding conditions for subsequent reactions.

[0020] 2. The present invention uses a baffle plate connected by a sliding rod to make vertical reciprocating motion. Through the disturbance of the baffle plate inside the mixing tank, particle deposition is avoided while ensuring that the raw materials are homogeneously distributed in the pretreatment stage.

[0021] 3. This invention effectively traps coal-based particulate impurities by continuously vibrating the filter screen of the filter assembly, disperses the particle deposition pressure, and keeps the filter screen in a good permeable state, providing clean and stable feeding conditions for subsequent reactions. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a partial structural diagram of the mixing tank of the present invention;

[0024] Figure 3 This is a schematic diagram of a partial structure of the motor of the present invention;

[0025] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the mixing tank of the present invention;

[0026] Figure 5 This is a partial structural diagram of the stirring rod of the present invention;

[0027] Figure 6 This is a partial structural diagram of the filter screen of the present invention;

[0028] Figure 7 for Figure 6 Enlarged diagram of point A in the middle.

[0029] The components are as follows: 1. Base plate; 2. Support frame; 3. Mixing tank; 4. Inlet; 5. Connecting pipe one; 6. Preheater; 7. Connecting pipe two; 8. Feed pump; 9. Rotary bed reactor; 10. Hydrogen conduit; 11. Motor; 12. Stirring rod one; 13. Stirring blade one; 14. Gear one; 15. Gear two; 16. Stirring rod two; 17. Stirring blade two; 18. Sliding column one; 19. Sliding column two; 20. Rectangular rod one; 21. Rectangular rod two; 22. Sliding column three; 23. U-shaped frame; 24. L-shaped frame; 25. Sliding rod; 26. Sliding ball; 27. Baffle plate; 28. Fixing block; 29. ​​Spring; 30. Rectangular frame; 31. Filter screen; 32. Rectangular block; 33. Rectangular trough; 34. Discharge conduit. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see the appendix Figure 1 - Appendix Figure 7This invention provides a dynamic countercurrent coal-based alkane deep refining device, comprising a base plate 1, a support frame 2 fixedly connected to the upper surface of the base plate 1, a mixing tank 3 fixedly connected to the upper surface of the support frame 2, a feed inlet 4 fixedly connected to the upper surface of the mixing tank 3, a preheater 6 fixedly connected to the upper surface of the base plate 1, a connecting pipe 5 fixedly connected to one end of the outer wall of the preheater 6, the other end of the connecting pipe 5 fixedly connected to the inside of the mixing tank 3, a rotating bed reactor 9 fixedly connected to the inside of the base plate 1, a hydrogen conduit 10 fixedly connected to the outer wall of the rotating bed reactor 9, a discharge conduit 34 fixedly connected to the bottom end of the rotating bed reactor 9, a connecting pipe 7 fixedly connected to one end of the outer wall of the preheater 6, the other end of the connecting pipe 7 fixedly connected to the top end of the rotating bed reactor 9, a feed pump 8 provided on the outer wall of the connecting pipe 7, a stirring assembly provided on the outer wall of the mixing tank 3, and a filter assembly provided on the inner wall of the mixing tank 3.

[0032] Specifically, coal-based alkane feedstock enters the mixing tank 3 through the feed inlet 4. Under the action of the stirring components, it is initially mixed and impurities are filtered out. The pretreated feedstock flows into the preheater 6 through the connecting pipe 1 5. The preheated feedstock is then transported to the top of the rotating bed reactor 9 through the connecting pipe 2 7 and the feed pump 8. At the same time, hydrogen is injected from the bottom through the hydrogen conduit 10. The gas and liquid phases come into countercurrent contact in the rotating bed to complete the hydrogenation refining reaction. The product after the reaction is discharged from the bottom of the rotating bed reactor 9 through the discharge conduit 34 and enters the subsequent separation unit. The stirring components are used to form bidirectional convection stirring by the counter-rotating of stirring blade 2 17 and stirring blade 1 13, which enhances the mixing effect. At the same time, stirring blade 2 17 disturbs and prevents particle deposition, adapting to the pretreatment requirements of feedstocks with different viscosities. The filtering components are used to effectively intercept coal-based particulate impurities by continuously vibrating the filter screen 31, dispersing the particle deposition pressure, and keeping the filter screen 31 in a good permeable state, providing clean and stable feed conditions for subsequent reactions.

[0033] The stirring assembly includes a motor 11, the outer wall of which is fixedly connected to the outer wall of the mixing tank 3. The output end of the motor 11 is rotatably connected to the inside of the mixing tank 3 and fixedly connected to a stirring rod 12. The outer wall of the stirring rod 12 is rotatably connected to the inside of the mixing tank 3, and a stirring blade 13 is fixedly connected to the outer wall of the stirring rod 12. A gear 14 is fixedly connected to the outer wall of the stirring rod 12. The stirring assembly also includes a gear 15, the tooth ends of which mesh with the tooth ends of the gear 14. A stirring rod 16 is fixedly connected to the inside of the gear 15, the outer wall of the stirring rod 16 is rotatably connected to the inside of the mixing tank 3, and a stirring blade 17 is fixedly connected to the outer wall of the stirring rod 16. The stirring assembly also includes a sliding column 18, the outer wall of which is fixedly connected to... Inside gear 14, a rectangular rod 20 is rotatably connected to the outer wall of sliding column 18, and a sliding column 22 is rotatably connected to the inside of rectangular rod 20. An L-shaped frame 24 is slidably connected to the outer wall of sliding column 22, and the outer wall of the L-shaped frame 24 is fixedly connected to the outer wall of the mixing tank 3. The mixing assembly also includes a sliding column 19, the outer wall of which is fixedly connected to the inside of gear 25, and a rectangular rod 21 is rotatably connected to the outer wall of sliding column 19. The inside of rectangular rod 21 is rotatably connected to the outer wall of sliding column 22, and a U-shaped frame 23 is fixedly connected to the outer wall of sliding column 22. A sliding rod 25 is fixedly connected to the outer wall of sliding column 22. A rectangular block 32 is fixedly connected to the outer wall of sliding rod 25, and a baffle 27 is fixedly connected to the bottom end of sliding rod 25.

[0034] Specifically, the stirring assembly functions to create bidirectional convection stirring through the opposing rotation of stirring blade 17 and stirring blade 13, enhancing the mixing effect. Simultaneously, stirring blade 17 prevents particle deposition, adapting to the pretreatment requirements of raw materials with different viscosities and providing uniform and stable feeding conditions for subsequent reactions. Specifically, starting motor 11 causes stirring rod 12 to rotate inside the mixing tank 3, simultaneously rotating stirring blade 13. During the rotation of stirring rod 12, gear 14 rotates, which in turn drives stirring rod 16 to rotate inside the mixing tank 3 via gear 15, causing stirring blade 17 to rotate. The rotation of stirring blades 17 and 13 forms a bidirectional convection mixing, which can effectively enhance the mixing effect. During the rotation of gears 14 and 15, gears 14 and 15 drive sliding columns 18 and 19 to rotate in a circular motion, which in turn drives the sliding columns 22 to rotate on the outer wall of the sliding column 22 via rectangular rods 20 and 21, thereby driving the sliding column 22 to slide up and down in the L-shaped frame 24. This causes the baffle plate 27 connected to the sliding rod 25 to perform vertical reciprocating motion. Through the disturbance of the baffle plate 27 inside the mixing tank 3, particle deposition is avoided while ensuring that the raw materials are homogeneously distributed in the pretreatment stage.

[0035] The filter assembly includes a fixed block 28, one end of a spring 29 is fixedly connected to the upper surface of the fixed block 28, and the other end of the spring 29 is fixedly connected to a rectangular frame 30. A rectangular groove 33 is formed on the outer wall of the rectangular frame 30. The filter assembly also includes a filter screen 31, the outer wall of which is fixedly connected to the inner wall of the rectangular frame 30. The filter assembly also includes a slider 26, the outer wall of which is fixedly connected to the inner wall of the rectangular groove 33, and the outer wall of which is slidably connected to the inner wall of the rectangular block 32.

[0036] Specifically, the function of the filter assembly is to effectively trap coal-based particulate impurities and disperse particle deposition pressure through the continuous vibration of the filter screen 31, so that the filter screen 31 always maintains a good permeability and provides clean and stable feeding conditions for subsequent reactions. Specifically, during the reciprocating up and down movement of the sliding rod 25, the sliding rod 25 will drive the rectangular block 32 to reciprocate up and down. During the reciprocating movement of the rectangular block 32, it will intermittently slide on the outer wall of the sliding ball 26 and cause the rectangular frame 30 to vibrate under the action of the spring 29. The continuous vibration of the filter screen 31 effectively traps coal-based particulate impurities and disperses particle deposition pressure.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dynamic countercurrent coal-based alkane deep refining device, comprising a bottom plate (1), characterized in that, A support frame (2) is fixedly connected to the upper surface of the base plate (1), a mixing tank (3) is fixedly connected to the upper surface of the support frame (2), a feed inlet (4) is fixedly connected to the upper surface of the mixing tank (3), a preheater (6) is fixedly connected to the upper surface of the base plate (1), one end of a connecting pipe (5) is fixedly connected to the outer wall of the preheater (6), the other end of the connecting pipe (5) is fixedly connected to the inside of the mixing tank (3), and a rotating bed reactor (9) is fixedly connected to the inside of the base plate (1). The outer wall of the rotating bed reactor (9) is fixedly connected to a hydrogen conduit (10), the bottom end of the rotating bed reactor (9) is fixedly connected to a discharge conduit (34), the outer wall of the preheater (6) is fixedly connected to one end of a connecting pipe (7), the other end of the connecting pipe (7) is fixedly connected to the top of the rotating bed reactor (9), the outer wall of the connecting pipe (7) is provided with a material pump (8), the outer wall of the mixing tank (3) is provided with a stirring assembly, and the inner wall of the mixing tank (3) is provided with a filter assembly.

2. The dynamic countercurrent coal-based alkane deep refining device according to claim 1, characterized in that, The stirring assembly includes a motor (11), the outer wall of which is fixedly connected to the outer wall of the stirring tank (3). The output end of the motor (11) is rotatably connected to the inside of the stirring tank (3) and is fixedly connected to a stirring rod (12). The outer wall of the stirring rod (12) is rotatably connected to the inside of the stirring tank (3). The outer wall of the stirring rod (12) is fixedly connected to a stirring blade (13) and a gear (14).

3. The dynamic countercurrent coal-based alkane deep refining device according to claim 2, characterized in that, The stirring assembly also includes a second gear (15), the tooth end of the second gear (15) meshes with the tooth end of the first gear (14), a stirring rod (16) is fixedly connected inside the second gear (15), the outer wall of the stirring rod (16) is rotatably connected inside the stirring box (3), and a stirring blade (17) is fixedly connected to the outer wall of the stirring rod (16).

4. The dynamic countercurrent coal-based alkane deep refining device according to claim 2, characterized in that, The stirring assembly also includes a sliding column (18), the outer wall of which is fixedly connected to the inside of the gear (14), a rectangular rod (20) is rotatably connected to the outer wall of the sliding column (18), a sliding column (22) is rotatably connected to the inside of the rectangular rod (20), an L-shaped frame (24) is slidably connected to the outer wall of the sliding column (22), and the outer wall of the L-shaped frame (24) is fixedly connected to the outer wall of the stirring tank (3).

5. A dynamic countercurrent coal-based alkane deep refining device according to claim 2, characterized in that, The stirring assembly also includes a sliding column two (19), the outer wall of which is fixedly connected to the inside of the gear two (15), and a rectangular rod two (21) is rotatably connected to the outer wall of the sliding column two (19).

6. The dynamic countercurrent coal-based alkane deep refining device according to claim 5, characterized in that, The inner rotatable connection of the rectangular rod 2 (21) is to the outer wall of the sliding column 3 (22), and the outer wall of the sliding column 3 (22) is fixedly connected to a U-shaped frame (23), and the outer wall of the sliding column 3 (22) is fixedly connected to a sliding rod (25).

7. A dynamic countercurrent coal-based alkane deep refining device according to claim 6, characterized in that, A rectangular block (32) is fixedly connected to the outer wall of the sliding rod (25), and a spoiler (27) is fixedly connected to the bottom end of the sliding rod (25).

8. A dynamic countercurrent coal-based alkane deep refining device according to claim 1, characterized in that, The filter assembly includes a fixed block (28), one end of a spring (29) is fixedly connected to the upper surface of the fixed block (28), and the other end of the spring (29) is fixedly connected to a rectangular frame (30). A rectangular groove (33) is provided on the outer wall of the rectangular frame (30).

9. A dynamic countercurrent coal-based alkane deep refining device according to claim 8, characterized in that, The filter assembly also includes a filter screen (31), the outer wall of which is fixedly connected to the inner wall of the rectangular frame (30).

10. A dynamic countercurrent coal-based alkane deep refining device according to claim 8, characterized in that, The filter assembly also includes a slider (26), the outer wall of which is fixedly connected to the inner wall of the rectangular groove (33), and the outer wall of which is slidably connected to the inner wall of the rectangular block (32).

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