A reactor for preparing high-purity n-octylamine using a highly selective hydrogenation catalyst

Abstract

The present invention discloses a reactor for preparing high-purity n-octylamine with a high-selectivity hydrogenation catalyst, which relates to the technical field of chemical reactors. It includes: a frame body, and the frame body is fixedly connected with a reaction tank; a lead screw, which is hermetically and rotatably connected to the reaction tank, and the lead screw is fixedly connected with mirror-image arranged connecting pieces; a moving shell, which is slidably connected to the reaction tank, and the moving shell is rotatably connected with mirror-image arranged rotating shells. Mirror-image arranged first stirring frames are rotatably connected between the rotating shells and the adjacent connecting pieces, and the first stirring frames have elasticity. In the present invention, the rotating shell squeezes the first stirring frame, the first stirring frame is compressed and deflected, and the angle between the first stirring frame and the horizontal plane gradually decreases, thereby (dynamically) changing the stirring area of the first stirring frame in the reaction tank, increasing the contact probability between different materials, and further increasing the reaction (preparation) rate.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical reactors, and particularly relates to a reactor for preparing high-purity n-octylamine with a highly selective hydrogenation catalyst. Background Art

[0002] N-octylamine is a saturated aliphatic amine compound, which is a colorless to light yellow liquid, stable at room temperature, but flammable when exposed to open flames or high temperatures. N-octylamine is widely used in fields such as organic synthesis, dye industry, rubber auxiliaries, and surfactants. N-octylamine is usually prepared by a reductive amination reaction of cyclooctanone and ammonia water in a hydrogen environment, and this process also requires the assistance of a catalyst to improve the reaction efficiency and selectivity.

[0003] During the preparation of n-octylamine, in order to break the interfacial layer between liquid phases, increase the contact area between reactants, and improve the mass transfer rate, it is usually necessary to continuously stir the reactants. However, in the existing preparation process, only a single stirring rod is used for stirring, resulting in a small stirring area, making it difficult for the materials to come into full contact. Moreover, due to the viscous texture of cyclooctanone, this exacerbates the insufficient contact between cyclooctanone and ammonia water, thereby leading to a low preparation efficiency of n-octylamine. Summary of the Invention[[ID=***]]

[0004] To overcome the drawbacks mentioned in the above technical background, the present invention provides a reactor for preparing high-purity n-octylamine with a highly selective hydrogenation catalyst.

[0005] The technical solution is as follows: A reactor for preparing high-purity n-octylamine with a highly selective hydrogenation catalyst, comprising: a frame body, the frame body is fixedly connected with a reaction tank, the reaction tank is provided with a feed pipeline and a discharge pipeline, and the reaction tank is fixedly connected with a distribution plate; a lead screw, which is hermetically and rotatably connected to the reaction tank, the lead screw is rotatably connected to the distribution plate, the lead screw is fixedly connected with mirror-image arranged connecting pieces, and the lead screw is slidably connected with mirror-image arranged sliding sleeves; a moving shell, which is slidably connected to the reaction tank, the moving shell is used for containing the catalyst, the moving shell is rotatably connected with mirror-image arranged rotating shells, and there are mirror-image arranged first stirring frames rotatably connected between the rotating shell and the adjacent connecting piece, the first stirring frame has flexibility, and the first stirring frame is rotatably connected with the adjacent sliding sleeve; a power mechanism, which is arranged at the lower part of the reaction tank and is used to make the moving shell and the reaction tank move relative to each other; a gas distribution mechanism, which is arranged at the lower part of the reaction tank and is used to introduce hydrogen into the reaction tank to provide a reaction environment.

[0006] Further description: The power mechanism includes: a motor installed on the reaction tank, the output shaft of the motor is fixedly connected to the lead screw, and the lead screw passes through the reaction tank; a sliding block fixedly connected to the moving shell, and the lead screw is used to move the sliding block; a limiting protrusion fixedly connected to the moving shell, and the reaction tank is provided with a first limiting groove for limiting the limiting protrusion.

[0007] Further description: The first limiting groove is a threaded groove, and the pitch of the first limiting groove is greater than the pitch of the threaded groove on the lead screw, so as to make the moving shell rotate.

[0008] Further description: The air distribution mechanism includes: an air passing shell rotatably connected to the reaction tank, the air passing shell is slidably connected and communicated with a circumferentially arranged air distribution shell, and the air distribution shell is provided with spaced air outlet holes; a connecting pipe fixedly connected to the reaction tank, the connecting pipe is communicated with the air passing shell, and the connecting pipe is communicated with an external gas storage device; a limiting component arranged on the lower side in the reaction tank for making the air distribution shell and the air passing shell slide relative to each other.

[0009] Further description: The limiting component includes: a limiting ring fixedly connected to the reaction tank, and the limiting ring is provided with a second limiting groove for extruding the air distribution shell.

[0010] Further description: The projection of the second limiting groove on the horizontal plane is a closed wave shape for making the air distribution shell and the air passing shell continuously slide relative to each other.

[0011] Further description: The sliding sleeve is fixedly connected with mirror-image arranged guiding shells, the guiding shells are slidably connected with moving parts, and second stirring frames are rotatably connected between the connecting parts and the adjacent moving parts and the rotating shell, and the second stirring frames are telescopic.

[0012] Further description: It further includes a flow disturbing mechanism, the number of which is the same as that of the guiding shells, and they are respectively arranged in the adjacent guiding shells. The flow disturbing mechanism includes: a first elastic sleeve fixedly connected between the guiding shell and the moving part, a second elastic sleeve is fixedly connected between the guiding shell and the moving part, the first elastic sleeve and the second elastic sleeve are respectively located on both sides of the moving part, and the guiding shell is provided with a first hole and a second hole.

[0013] Further description: The first hole and the second hole on the same guiding shell face in opposite directions.

[0014] Further explanation: The connecting piece is fixedly connected with a first guide plate and a second guide plate. The lead screw is provided with a liquid passing channel and third holes arranged at intervals, and the third holes are communicated with the liquid passing channel. Both the first guide plate and the second guide plate are arranged obliquely, and their oblique directions are opposite.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By rotating the shell to squeeze the first stirring frame, the first stirring frame is compressed and deflected, and the angle between the first stirring frame and the horizontal plane gradually decreases, thereby (dynamically) changing the stirring area of the first stirring frame in the reaction tank, increasing the contact probability between different materials, and further increasing the reaction (preparation) rate. At the same time, by using the relative deflection of the two first stirring frames, the materials in the adjacent areas are sheared, so as to forcibly disperse the relatively viscous and difficult-to-disperse materials, further increasing the reaction (preparation) rate; By driving the carrier balls in it to move together with the rotating shell, the carrier balls are affected by the resistance of the materials and move and collide with each other, so as to remove the materials adhered to the surface of the carrier balls, avoiding the materials covering the carrier balls, resulting in uneven contact between the materials and the catalyst and reducing the preparation rate; By limiting the gas distribution shell through the second limiting groove, the gas distribution shell reciprocates along its own circumference, thereby changing the initial position of hydrogen in the reaction tank and continuously changing the stirring state of the gas distribution shell on the materials in the reaction tank, increasing the degree of disturbance of all the materials in the reaction tank, and further increasing the preparation efficiency; By using the stretching and resetting of the first elastic sleeve and the second elastic sleeve, a turbulent flow is generated in the reaction tank to impact the materials in the reaction tank, improving the dispersion effect of the viscous and difficult-to-disperse materials. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the whole of the present invention;

[0017] Figure 2 It is a three-dimensional structural schematic diagram when the moving shell and the rotating shell of the present invention rotate relative to each other;

[0018] Figure 3 It is a three-dimensional structural sectional view during the contraction process of the first stirring frame of the present invention;

[0019] Figure 4 It is a three-dimensional structural sectional view of the reaction tank of the present invention;

[0020] Figure 5 It is a three-dimensional structural sectional view when the gas passing shell and the reaction tank of the present invention rotate relative to each other;

[0021] Figure 6 It is a three-dimensional structural sectional view of the gas passing shell and the limiting ring of the present invention;

[0022] Figure 7 It is a three-dimensional structural sectional view of the lead screw and the guide shell of the present invention;

[0023] Figure 8 This is an exploded perspective view of the lead screw of the present invention and the parts thereon.

[0024] Meanings of the reference numerals in the figure: 1 - frame body, 2 - reaction tank, 3 - material distribution plate, 4 - lead screw, 5 - connecting piece, 6 - sliding sleeve, 7 - moving shell, 8 - rotating shell, 9 - first stirring frame, 1001 - motor, 1002 - sliding block, 1003 - limiting projection, 1004 - first limiting groove, 1101 - gas passing shell, 1102 - gas distribution shell, 1103 - air outlet hole, 1104 - connecting pipe, 1201 - limiting ring, 1202 - second limiting groove, 1301 - guiding shell, 1302 - moving part, 1303 - second stirring frame, 1401 - first elastic sleeve, 1402 - second elastic sleeve, 1403 - first hole, 1404 - second hole, 1501 - first guiding plate, 1502 - second guiding plate, 1503 - liquid passing channel, 1504 - third hole. Detailed implementation manners

[0025] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which the presently preferred embodiments of the present invention are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the present invention to those skilled in the art.

[0026] As Figures 1 - 3 shown, in an embodiment of the present invention, a reactor for preparing high - purity n - octylamine from a highly selective hydrogenation catalyst is proposed to solve the problems of the single stirring means, small stirring area, and difficulty in fully stirring the materials of the existing reactor, resulting in low preparation efficiency. It includes: a frame body 1, the frame body 1 is fixedly connected with a reaction tank 2, the reaction tank 2 is provided with a feed pipeline and a discharge pipeline, and the reaction tank 2 is fixedly connected with a material distribution plate 3; a lead screw 4, which is hermetically rotatably connected to the reaction tank 2, the lead screw 4 is rotatably connected to the material distribution plate 3, the lead screw 4 is fixedly connected with mirror - arranged connecting pieces 5, and the lead screw 4 is slidably connected with mirror - arranged sliding sleeves 6; a moving shell 7, which is slidably connected to the reaction tank 2, the moving shell 7 is used for containing the catalyst, the moving shell 7 is rotatably connected with mirror - arranged rotating shells 8, and between the rotating shell 8 and the adjacent connecting piece 5, there are mirror - arranged first stirring frames 9 rotatably connected, the first stirring frames 9 have telescopic properties, and the first stirring frames 9 are rotatably connected with the adjacent sliding sleeves 6; a power mechanism, which is arranged at the lower part of the reaction tank 2 and is used to relatively move the moving shell 7 and the reaction tank 2; a gas distribution mechanism, which is arranged at the lower part of the reaction tank 2 and is used to introduce hydrogen into the reaction tank 2 to provide a reaction environment.

[0027] In the above solution, the frame body 1 is welded by profiled steel. The feeding pipeline and the discharging pipeline on the reaction tank 2 are respectively located on the upper and lower sides of the reaction tank 2. The feeding pipeline on the reaction tank 2 is connected to the external storage equipment, and the discharging pipeline on the reaction tank 2 is connected to the external receiving equipment. Valves are provided at the above two connection points. The material distribution plate 3 is conical with the cone tip facing upward, and it is provided with evenly arranged material passing holes. The material passing holes on the material distribution plate 3 are used to evenly distribute the materials. The catalyst in the moving shell 7 adheres to the carrier balls, that is, carrier balls are arranged in the moving shell 7. The carrier balls are made of non-metallic materials. The stirring frame 9 is in the shape of a rectangular frame and is composed of two guiding parts and a U-shaped rod. The guiding parts are rotatably connected to the sliding sleeve 6, and the U-shaped rod is rotatably connected to the adjacent connecting part 5. The mirror-image arranged first stirring frames 9 intersect with each other. When using the present invention, the staff adds materials (including cyclooctanone and ammonia water, and n-octylamine is prepared by the reaction between the two) into the feeding pipeline on the reaction tank 2. After the materials enter the reaction tank 2, they fall downward onto the material distribution plate 3. The materials flow outward along the upper side of the material distribution plate 3. When the materials pass through the material passing holes on the material distribution plate 3, the materials continue to fall downward through the material passing holes on the material distribution plate 3. The materials gradually accumulate in the reaction tank 2 until the liquid level of the materials in the reaction tank 2 is about to contact the lower side of the material distribution plate 3, then stop adding materials. Use the power mechanism to make the lead screw 4 rotate counterclockwise (taking the Figure 2 top view direction as an example). The lead screw 4 drives the connecting part 5 to rotate counterclockwise together. The connecting part 5 drives the first stirring frame 9 to rotate counterclockwise together (the first stirring frame 9 drives the sliding sleeve 6 to rotate counterclockwise together), so as to stir the materials in the reaction tank 2. During the process, the power mechanism also makes the moving shell 7 drive the rotating shell 8 to move upward (for the convenience of description, now take the actions of the moving shell 7 and the parts above it as an example). The rotating shell 8 squeezes the two first stirring frames 9. The two first stirring frames 9 are compressed and deflected, and the angle (included angle) between the two first stirring frames 9 gradually decreases, so as to (dynamically) change the stirring area of the first stirring frame 9 in the reaction tank 2, increase the contact probability between different materials, and thus increase the reaction (preparation) rate. At the same time, using the relative deflection of the two first stirring frames 9, the materials in the adjacent areas are also sheared, so as to forcibly disperse the relatively viscous and non-dispersible materials, and further increase the reaction (preparation) rate.

[0028] As the lead screw 4 continues to rotate counterclockwise, the moving shell 7 drives the rotating shell 8 to continuously move upward. When the rotating shell 8 moves upward to the limit position, the lead screw 4 starts to make the moving shell 7 move downward through the power mechanism. The moving shell 7 drives the rotating shell 8 to move downward together, and the first stirring frame 9 gradually resets. This reciprocating cycle continues until the preparation of n-octylamine is completed. During the process, the gas distribution mechanism continuously fills hydrogen into the reaction tank 2. The moving shell 7 also drives the carrier balls inside it to move up and down together. During the process, the carrier balls move up and down and collide with each other under the influence of the material resistance, so as to remove the material adhered to the surface of the carrier balls, avoiding the material covering the carrier balls, which may lead to uneven contact between the material and the catalyst and reduce the preparation rate.

[0029] As Figures 1 - 4 shown, the power mechanism includes: a motor 1001 installed in the reaction tank 2. The output shaft of the motor 1001 is fixedly connected to the lead screw 4, and the lead screw 4 passes through the reaction tank 2; a sliding block 1002 fixedly connected to the moving shell 7. The lead screw 4 is used to make the sliding block 1002 move; a limiting protrusion 1003 fixedly connected to the moving shell 7. The reaction tank 2 is provided with a first limiting groove 1004, and the first limiting groove 1004 is used to limit the limiting protrusion 1003. The first limiting groove 1004 is a threaded groove, and the pitch of the first limiting groove 1004 is greater than the pitch of the threaded groove on the lead screw 4, which is used to make the moving shell 7 rotate.

[0030] In the above solution, the lead screw 4 is a prior art (there is a spiral groove on it), and its detailed working principle will not be elaborated here. During the counterclockwise rotation of the lead screw 4, the lead screw 4 drives the sliding block 1002 to move upward. The sliding block 1002 drives the rotating shell 8 to move upward together through the moving shell 7. The moving shell 7 drives the limiting protrusion 1003 to move upward together. The limiting protrusion 1003 starts to slide in the first limiting groove 1004. During the process, the limiting protrusion 1003 drives the moving shell 7 to rotate counterclockwise. The moving shell 7 and the rotating shell 8 rotate relatively, so that the carrier balls in the moving shell 7 also move in the horizontal direction, increasing the movement diversity of the carrier balls, further improving the removal effect of the material adhered to the carrier balls, and at the same time disturbing the material in the adjacent area, thereby improving the preparation rate. After the rotating shell 8 moves upward to the limit position, the output shaft of the motor 1001 drives the lead screw 4 to rotate in the reverse direction (clockwise rotation), so that the moving shell 7 moves downward again. After the moving shell 7 is completely reset, the output shaft of the motor 1001 rotates in reverse again, so that the moving shell 7 reciprocates up and down until the preparation of n-octylamine is completed.

[0031] As Figure 2 、 Figure 3 and Figures 5 - 8As shown in the figure, the gas distribution mechanism includes: an air passing shell 1101, rotatably connected to the reaction tank 2. The air passing shell 1101 is slidably connected and communicated with a circumferentially arranged air distribution shell 1102. The air distribution shell 1102 is provided with air outlet holes 1103 arranged at intervals; a connecting pipe 1104, fixedly connected to the reaction tank 2. The connecting pipe 1104 is communicated with the air passing shell 1101, and the connecting pipe 1104 is communicated with an external gas storage device; a limiting component, arranged on the lower side in the reaction tank 2, used to make the air distribution shell 1102 and the air passing shell 1101 slide relative to each other; the limiting component includes: a limiting ring 1201, fixedly connected to the reaction tank 2. The limiting ring 1201 is provided with a second limiting groove 1202, which is used to squeeze the air distribution shell 1102. The projection of the second limiting groove 1202 on the horizontal plane is a closed wavy shape, used to make the air distribution shell 1102 and the air passing shell 1101 continuously slide relative to each other. The sliding sleeve 6 is fixedly connected with mirror-image arranged guiding shells 1301. The guiding shells 1301 are slidably connected with moving parts 1302. The guiding shells 1301 are provided with mirror-image arranged notches for the moving parts 1302 to slide. Second stirring frames 1303 are rotatably connected between the connecting piece 5 and the rotating shell 8 and the adjacent moving parts 1302 respectively. The second stirring frames 1303 have flexibility.

[0032] In the above solution, the second stirring frame 1303 is a U-shaped frame and is composed of a U-shaped frame and two telescopic rods. The U-shaped frame is rotatably connected to the adjacent connecting piece 5, and the telescopic rod is rotatably connected to the adjacent moving part 1302. Air is blown into the air passing shell 1101 through an external gas storage device and the connecting pipe 1104 (this gas is hydrogen, which provides a required environment for the reaction, thereby activating the catalyst, increasing the activity of the catalyst and improving the selectivity of the catalyst for the characteristic structure, and further improving the preparation rate and the purity of the prepared n-octylamine). The hydrogen enters the air distribution shell 1102 from the air passing shell 1101, and then the hydrogen is discharged from the air outlet holes 1103 into the reaction tank 2. The hydrogen moves upward under the action of buoyancy, and then the hydrogen contacts the catalyst, thereby improving the activity of the catalyst.

[0033] During the counterclockwise rotation of the lead screw 4, the lead screw 4 drives the air passing shell 1101 to rotate counterclockwise together. The air passing shell 1101 rotates relative to the reaction tank 2, and the air passing shell 1101 drives the air distribution shell 1102 to rotate together, thus changing the position where the hydrogen enters the reaction tank 2 and making the hydrogen evenly distributed circumferentially in the reaction tank 2. During this process, the air distribution shell 1102 slides in the second limiting groove 1202, and the second limiting groove 1202 limits the air distribution shell 1102, making the air distribution shell 1102 reciprocate along its own radial direction, thereby further changing the initial position of the hydrogen in the reaction tank 2 and continuously changing the stirring state of the materials in the reaction tank 2 by the air distribution shell 1102, improving the degree of disturbance of all the materials in the reaction tank 2, and further improving the preparation efficiency.

[0034] During the counterclockwise rotation of the sliding sleeve 6 (connector 5), the sliding sleeve 6 drives the guide housing 1301 to rotate counterclockwise together, and the guide housing 1301 drives the moving member 1302 to rotate counterclockwise together. During the upward movement of the rotating housing 8, the rotating housing 8 squeezes the second stirring frame 1303, and the second stirring frame 1303 deflects and is compressed, thus further enhancing the stirring degree of the materials in the reaction tank 2 and further improving the preparation efficiency.

[0035] As Figure 5 , Figure 7 and Figure 8 shown, there is also a flow disturbance mechanism, the number of which is the same as that of the guide housings 1301, and they are respectively arranged in adjacent guide housings 1301. The flow disturbance mechanism includes: a first elastic sleeve 1401, fixedly connected between the guide housing 1301 and the moving member 1302. There is a second elastic sleeve 1402 fixedly connected between the guide housing 1301 and the moving member 1302. The first elastic sleeve 1401 and the second elastic sleeve 1402 are respectively located on both sides of the moving member 1302. The guide housing 1301 is provided with a first hole 1403 and a second hole 1404. The first hole 1403 and the second hole 1404 on the same guide housing 1301 face in opposite directions and are used to disturb the materials in the reaction tank 2.

[0036] In the above solution, both the first elastic sleeve 1401 and the second elastic sleeve 1402 are made of elastic rubber. The first elastic sleeve 1401 is initially in a stretched state. One side of the first elastic sleeve 1401 is fixedly connected to the side of the guide housing 1301 close to the sliding sleeve 6, and the other side of the first elastic sleeve 1401 is fixedly connected to the moving member 1302. And the guide housing 1301 is located between the moving member 1302 and the second hole 1404. One side of the second elastic sleeve 1402 is fixedly connected to the moving member 1302, and the other side of the second elastic sleeve 1402 is fixedly connected to the side of the guide housing 1301 away from the sliding sleeve 6. And the second elastic sleeve 1402 is located between the moving member 1302 and the first hole 1403. The first elastic sleeve 1401 (second elastic sleeve 1402) is used to block adjacent notches on the guide housing 1301. During the upward movement of the rotating housing 8 (during the process of the adjacent two second stirring frames 1303 approaching each other), the moving member 1302 slides to the right along the guide housing 1301 (now taking Figure 7 the movement of the guide housing 1301 and its parts therein as an example). The moving member 1302 stretches the second elastic sleeve 1402 and extracts the materials in the adjacent area of the reaction tank 2 into the guide housing 1301 through the first hole 1403. During this process, the first elastic sleeve 1401 gradually returns to its original position, and the materials in it are discharged through the second hole 1404. In this way, a turbulent flow is generated in the reaction tank 2, impacting the materials in the reaction tank 2 and improving the dispersion effect of the materials that are viscous and not easily dispersed.

[0037] As Figure 5, Figure 7 and Figure 8 As shown, the connecting member 5 is fixedly connected with a first guide plate 1501 and a second guide plate 1502. The lead screw 4 is provided with a liquid passing channel 1503 and third holes 1504 arranged at intervals. The third holes 1504 communicate with the liquid passing channel 1503. Both the first guide plate 1501 and the second guide plate 1502 are arranged obliquely, and their oblique directions are opposite.

[0038] In the above solution, there are multiple third holes 1504, which are respectively arranged on the upper and lower sides of the lead screw 4. The multiple third holes 1504 are divided into upper and lower groups, and the two groups of third holes 1504 are respectively located on the upper and lower sides of the liquid passing channel 1503, and each third hole 1504 corresponds to a first guide plate 1501 (the second guide plate 1502). During the counterclockwise rotation of the lead screw 4, the lead screw 4 drives the first guide plate 1501 and the second guide plate 1502 to rotate counterclockwise together. The second guide plate 1502 squeezes the material in the adjacent area into the third hole 1504 on the lower side, and the first guide plate 1501 squeezes the material in the adjacent area to its outside. In this way, the material moves upward from bottom to top in the liquid passing channel 1503, so that the material circulates up and down in the reaction tank 2, improving the fluidity of the material and the contact degree of the material with the carrier balls, and further improving the efficiency of preparing n-octylamine.

[0039] The above are only examples of the present invention and are not used to limit the present invention. All equivalent replacements made within the principle of the present invention shall be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the well-known prior art in the technical field of this specialty.

Claims

1. A reactor for preparing high-purity n-octylamine using a highly selective hydrogenation catalyst, characterized in that, It includes: A frame body (1), the frame body (1) is fixedly connected with a reaction tank (2), the reaction tank (2) is provided with a feed pipeline and a discharge pipeline, and the reaction tank (2) is fixedly connected with a material distribution plate (3); A lead screw (4), which is hermetically and rotatably connected to the reaction tank (2), the lead screw (4) is rotatably connected to the material distribution plate (3), the lead screw (4) is fixedly connected with mirror-image arranged connecting pieces (5), and the lead screw (4) is slidably connected with mirror-image arranged sliding sleeves (6); A moving shell (7), which is slidably connected to the reaction tank (2), the moving shell (7) is used for containing a catalyst, carrier balls are arranged in the moving shell (7), the catalyst is attached to the carrier balls, the moving shell (7) is rotatably connected with mirror-image arranged rotating shells (8), a mirror-image arranged first stirring frame (9) is rotatably connected between the rotating shell (8) and the adjacent connecting piece (5), the first stirring frame (9) has flexibility, and the first stirring frame (9) is rotatably connected to the adjacent sliding sleeve (6); A power mechanism, which is arranged at the lower part of the reaction tank (2) and is used for relatively moving the moving shell (7) and the reaction tank (2); An air distribution mechanism, which is arranged at the lower part of the reaction tank (2) and is used for introducing hydrogen into the reaction tank (2) to provide a reaction environment; The power mechanism includes: A motor (1001), which is installed on the reaction tank (2), the output shaft of the motor (1001) is fixedly connected with the lead screw (4), and the lead screw (4) passes through the reaction tank (2); A sliding block (1002), which is fixedly connected to the moving shell (7), and the lead screw (4) is used for moving the sliding block (1002); A limiting protrusion (1003), which is fixedly connected to the moving shell (7), the reaction tank (2) is provided with a first limiting groove (1004), and the first limiting groove (1004) is used for limiting the limiting protrusion (1003); The first limiting groove (1004) is a threaded groove, and the pitch of the first limiting groove (1004) is greater than the pitch of the threaded groove on the lead screw (4) for rotating the moving shell (7); The air distribution mechanism includes: An air passing shell (1101), which is rotatably connected to the reaction tank (2), the air passing shell (1101) is slidably connected and communicated with a circumferentially arranged air distribution shell (1102), and the air distribution shell (1102) is provided with spaced-apart air outlet holes (1103); A connecting pipe (1104), which is fixedly connected to the reaction tank (2), the connecting pipe (1104) is communicated with the air passing shell (1101), and the connecting pipe (1104) is communicated with an external gas storage device; A limiting component, which is arranged on the lower side in the reaction tank (2) and is used for relatively sliding the air distribution shell (1102) and the air passing shell (1101); The limiting component includes: The limit ring (1201) is fixedly connected to the reaction tank (2). The limit ring (1201) is provided with a second limit groove (1202) for extruding the gas distribution shell (1102). The sliding sleeve (6) is fixedly connected with mirror-image arranged guide shells (1301). A moving member (1302) is slidably connected to the guide shell (1301). Second stirring frames (1303) are rotatably connected between the connecting member (5) and the rotating shell (8) and the adjacent moving member (1302). The second stirring frames (1303) are telescopic.

2. The reactor for preparing high-purity n-octylamine with the high-selectivity hydrogenation catalyst according to claim 1, characterized in that, The projection of the second limit groove (1202) on the horizontal plane is a closed wavy shape for continuously relatively sliding the gas distribution shell (1102) and the gas passing shell (1101).

3. A reactor for preparing high-purity n-octylamine using the highly selective hydrogenation catalyst according to claim 2, characterized in that, It further includes a flow disturbing mechanism, the number of which is the same as that of the guide shells (1301), and is respectively arranged in adjacent guide shells (1301). The flow disturbing mechanism includes: A first elastic sleeve (1401) is fixedly connected between the guide shell (1301) and the moving member (1302). A second elastic sleeve (1402) is fixedly connected between the guide shell (1301) and the moving member (1302). The first elastic sleeve (1401) and the second elastic sleeve (1402) are respectively located on both sides of the moving member (1302). The guide shell (1301) is provided with a first hole (1403) and a second hole (1404).

4. A reactor for preparing high-purity n-octylamine with the high-selectivity hydrogenation catalyst according to claim 3, characterized in that, The first hole (1403) and the second hole (1404) on the same guide shell (1301) face in opposite directions.

5. A reactor for preparing high-purity n-octylamine using the highly selective hydrogenation catalyst according to claim 4, wherein, The connecting member (5) is fixedly connected with a first guide plate (1501) and a second guide plate (1502). The lead screw (4) is provided with a liquid passing channel (1503) and third holes (1504) arranged at intervals. The third holes (1504) communicate with the liquid passing channel (1503). The first guide plate (1501) and the second guide plate (1502) are both inclined, and their inclined directions are opposite.

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