A cyclohexylamine-based silane coupling agent production device and a production process thereof

Abstract

This invention discloses a cyclohexylaminosilane coupling agent production apparatus and its production process, belonging to the field of coupling agent production technology. The cyclohexylaminosilane coupling agent production apparatus of this invention includes a synthesis kettle, a centrifuge, and a distillation column. The inlet of the synthesis kettle is equipped with a metering tank, the outlet of the synthesis kettle is connected to the centrifuge, the outlet of the centrifuge is connected to a crude product storage tank, and the output end of the crude product storage tank is equipped with a distillation column. This invention solves the problem that existing reaction devices cannot achieve reflux. The cyclohexylaminosilane coupling agent production apparatus and its production process proposed in this invention are equipped with a continuously processing synthesis kettle, centrifuge, and distillation column, facilitating the synthesis, separation, and distillation of the cyclohexylaminosilane coupling agent. A stirring reflux assembly is installed in the synthesis kettle, and a drive motor drives a rotating shaft to rotate. The spiral blades follow the rotating shaft, pushing the liquid in the limiting cylinder upwards to form reflux.

Description

Technical Field

[0001] This invention relates to the field of coupling agent technology, specifically to a cyclohexylaminosilane coupling agent production apparatus and its production process. Background Technology

[0002] Coupling agents are used to improve the interfacial interaction between inorganic and organic materials, thereby greatly improving the properties of composite materials, such as physical, electrical, thermal, and optical properties.

[0003] Chinese Patent Publication No. CN114558517B discloses an adjustable coupling agent preparation device, including a reaction vessel and an adjustment device. The adjustment device includes a driving mechanism and a motion mechanism. The driving mechanism is located above the motion mechanism and is connected to the motion mechanism in a transmission manner. Several strip-shaped deformable components are arranged longitudinally on the side wall of the reaction vessel, and the deformable components are connected to the motion mechanism through several deformable tie rods.

[0004] While this patent addresses to some extent the lack of a coupling agent preparation device in the prior art that can adjust the reaction vessel volume and reaction pressure in real time, the reaction device in this application has a hollow structure, which cannot accelerate the reaction or achieve reflux. Simply changing the pressure is insufficient to increase the reaction rate of the coupling agent. Summary of the Invention

[0005] The purpose of this invention is to provide a cyclohexylaminosilane coupling agent production apparatus and its production process. By setting up a continuous processing synthesis kettle, a centrifuge, and a distillation column, the synthesis, separation, and distillation of the cyclohexylaminosilane coupling agent can be easily realized. A stirring and reflux assembly is set in the synthesis kettle, and a drive motor drives the rotating shaft to rotate. The spiral blades follow the rotation of the rotating shaft, pushing the liquid in the limiting cylinder upward to form reflux, which can improve the temperature uniformity in the synthesis kettle and solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cyclohexylamine silane coupling agent production apparatus, comprising a synthesis reactor, a centrifuge, and a distillation column. The inlet of the synthesis reactor is equipped with a metering tank, the outlet of the synthesis reactor is connected to the centrifuge, the outlet of the centrifuge is connected to a crude product storage tank, the output end of the crude product storage tank is equipped with a distillation column, the distillation column is connected to a recovery tank, the recovery tank includes a cyclohexylamine recovery tank and a finished product recovery tank, both of which are connected to the distillation column, and the cyclohexylamine recovery tank is connected to the synthesis reactor.

[0007] Preferably, there are two metering tanks: one is a cyclohexylamine raw material tank, and the other is a chloropropylsiloxane raw material tank. Both the cyclohexylamine raw material tank and the chloropropylsiloxane raw material tank are connected to the synthesis reactor via metering pumps.

[0008] Preferably, the synthesis vessel is provided with a heating layer on the outside, a discharge port is provided at the lower end of the synthesis vessel, the discharge port is connected to a centrifuge through a metering pump, and a stirring and reflux assembly is provided inside the synthesis vessel.

[0009] Preferably, the stirring and reflux assembly includes a drive motor, a rotating shaft, a limiting plate, a limiting cylinder, a transverse moving frame, and a longitudinal moving plate. The limiting plate is fixedly connected to the upper end of the inside of the synthesis vessel. A rotating shaft is connected through the center of the limiting plate. The upper end of the rotating shaft passes through the synthesis vessel and is fixedly connected to the drive motor. The transverse moving frame and the longitudinal moving plate are movably connected to the lower surface of the limiting plate. The lower end of the limiting cylinder is fixedly connected to the lower end of the inside of the synthesis vessel, and the limiting cylinder is sleeved with the lower end of the rotating shaft.

[0010] Preferably, the rotating shaft is fixedly connected to a spiral blade inside the limiting cylinder, and the lower end of the limiting cylinder has liquid inlets at equal intervals.

[0011] Preferably, the lower surface of the limiting plate is symmetrically provided with sliding grooves, the sliding grooves are movably connected to the transverse moving frame, a guide rod is provided on one side of the sliding groove, a longitudinal moving plate is sleeved on the guide rod, and a support spring is sleeved on the end of the guide rod, with one end of the support spring abutting against the longitudinal moving plate.

[0012] Preferably, the transverse moving frame includes an upper frame, a lower frame, and a pressing plate. The upper and lower ends of the pressing plate are respectively provided with the upper frame and the lower frame. A rotating shaft passes through the upper frame, and the lower frame is sleeved with a limiting cylinder.

[0013] Preferably, the upper surface of the upper frame is provided with a slide bar that matches the slide groove, the inner wall of the upper frame is provided with internal teeth that mesh with an incomplete gear provided on the rotating shaft, and both the upper and lower frames are provided with a first protrusion.

[0014] Preferably, the upper and lower ends of the longitudinal moving plate are provided with second protrusions, the second protrusions abut against the first protrusions, and a collar is fixedly connected to the upper surface of the second protrusions, the collar being sleeved with the guide rod.

[0015] Another technical problem to be solved by the present invention is to provide a production process for a cyclohexylamine silane coupling agent, comprising the following steps:

[0016] S1 Synthesis: Cyclohexylamine is added to the synthesis reactor from the cyclohexylamine feed tank via a metering pump. The synthesis reactor is heated to 60-70℃ and then heating is stopped. Chloropropylsiloxane is added dropwise to the synthesis reactor from the chloropropylsiloxane feed tank via a metering pump, and the addition is completed within 1-2 hours. The synthesis reactor is then heated to 100-110℃, the drive motor is turned on, and the reactor is kept at this temperature and refluxed for 2-3 hours. After the holding period, the cyclohexylamine is recovered and transferred to the cyclohexylamine recovery tank. The process ends when the reactor temperature reaches 140℃.

[0017] S2 Separation: The cooling system is turned on to cool down the synthesis kettle, and a large amount of crystallized salt is precipitated. The mixture is then pumped into a centrifuge by a metering pump for centrifugal separation, and the resulting liquid is stored in a crude product storage tank.

[0018] S3 Distillation: The crude product is pumped into the distillation column, and the vacuum degree in the distillation column is controlled at -0.098MPa. The distillation is carried out by heating. When the temperature at the top of the distillation column is 30-70℃, cyclohexylamine is recovered to the cyclohexylamine recovery tank. When the temperature at the top of the column reaches 120℃, the finished product is collected to the finished product recovery tank until the temperature at the bottom reaches 160-170℃, at which point the finished product collection is completed.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention facilitates the synthesis, separation, and distillation of cyclohexylaminosilane coupling agents by setting up a synthesis kettle, centrifuge, and distillation column for continuous processing. A stirring and reflux assembly is set up in the synthesis kettle, and a drive motor drives the rotating shaft to rotate. The spiral blades follow the rotating shaft and push the liquid in the limiting cylinder to move upward to form reflux, which can improve the temperature uniformity in the synthesis kettle.

[0021] 2. This invention uses a rotating shaft to simultaneously drive the incomplete gear to rotate, controlling the reciprocating lateral movement of the transverse moving frame. The transverse moving frame, in turn, controls the longitudinal moving plate to work longitudinally. Through the reciprocating movement of the extrusion plate and the longitudinal moving plate, the liquid with a high temperature at the edge of the synthesis vessel is mixed with the liquid with a low temperature inside the synthesis vessel, improving temperature uniformity and accelerating the liquid reaction, thereby increasing the reaction rate. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of the cyclohexylamine silane coupling agent production apparatus of the present invention;

[0023] Figure 2 This is a structural diagram of the stirring and reflux assembly of the present invention;

[0024] Figure 3 This is a partial structural diagram of the stirring and reflux assembly of the present invention;

[0025] Figure 4 This is a diagram of the internal structure of the limiting cylinder of the present invention;

[0026] Figure 5 This is a diagram showing the working state of the transverse moving frame and the longitudinal moving plate of the present invention.

[0027] In the diagram: 1. Metering tank; 11. Cyclohexylamine raw material tank; 12. Chloropropylsiloxane raw material tank; 2. Synthesis vessel; 21. Heating layer; 3. Centrifuge; 4. Crude product storage tank; 5. Distillation column; 6. Recovery tank; 61. Cyclohexylamine recovery tank; 62. Finished product recovery tank; 7. Stirring and reflux assembly; 71. Drive motor; 72. Rotating shaft; 721. Spiral blade; 722. Incomplete gear; 73. Limiting plate; 731. Slide groove; 732. Guide rod; 733. Support spring; 74. Limiting cylinder; 741. Liquid inlet; 75. Lateral moving frame; 751. Upper frame; 7511. Sliding bar; 7512. Internal gear; 7513. First protrusion; 752. Lower frame; 753. Extrusion plate; 76. Longitudinal moving plate; 761. Second protrusion; 762. Collar. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0029] To resolve the existing issues, please refer to Figures 1-5 This embodiment provides the following technical solution:

[0030] A cyclohexylamine silane coupling agent production apparatus includes a synthesis reactor 2, a centrifuge 3, and a distillation column 5. The inlet of the synthesis reactor 2 is equipped with a metering tank 1. There are two metering tanks 1, one is a cyclohexylamine raw material tank 11, and the other is a chloropropylsiloxane raw material tank 12. Both the cyclohexylamine raw material tank 11 and the chloropropylsiloxane raw material tank 12 are connected to the synthesis reactor 2 through a metering pump.

[0031] Specifically, cyclohexylamine raw material is added to synthesis reactor 2 via a metering pump and heated inside the reactor 2. Then, chloropropylsiloxane raw material is pumped into the reactor 2 via a metering pump to carry out the synthesis reaction.

[0032] The synthesis vessel 2 is equipped with a heating layer 21 on the outside and a discharge port at the bottom. The discharge port is connected to a centrifuge 3 via a metering pump. Cyclohexylamine and chloropropylsiloxane react inside the synthesis vessel 2. The heating layer 21 controls the temperature inside the synthesis vessel 2. The synthesis vessel 2 is equipped with a stirring and reflux assembly 7 inside. The stirring and reflux assembly 7 is used for stirring to increase the reaction rate and accelerate liquid reflux, thereby improving the temperature uniformity inside the synthesis vessel 2.

[0033] The stirring reflux assembly 7 includes a drive motor 71, a rotating shaft 72, a limiting plate 73, a limiting cylinder 74, a transverse moving frame 75, and a longitudinal moving plate 76. The limiting plate 73 is fixedly connected to the upper part of the inside of the synthesis vessel 2. The rotating shaft 72 is connected through the center of the limiting plate 73. The upper end of the rotating shaft 72 passes through the synthesis vessel 2 and is fixedly connected to the drive motor 71. When the drive motor 71 is working, it drives the rotating shaft 72 to rotate. The rotating shaft 72 drives the liquid in the limiting cylinder 74 to move upward and finally move out from the upper end of the limiting cylinder 74. The liquid outside the limiting cylinder 74 enters the limiting cylinder 74 from the lower end of the limiting cylinder 74, forming reflux and improving the temperature uniformity inside the synthesis vessel 2.

[0034] The rotating shaft 72 is fixedly connected to the spiral blade 721 inside the limiting cylinder 74, and the lower end of the limiting cylinder 74 is provided with liquid inlets 741 at equal intervals.

[0035] Specifically, the edge of the spiral blade 721 is attached to the inner wall of the limiting cylinder 74. The spiral blade 721 rotates with the rotating shaft 72, pushing the liquid in the limiting cylinder 74 upward. The liquid inlet 741 is used for external liquid to enter the limiting cylinder 74.

[0036] The lower surface of the limiting plate 73 is movably connected to a transverse moving frame 75 and a longitudinal moving plate 76. The lower end of the limiting cylinder 74 is fixedly connected to the lower end inside the synthesis vessel 2, and the limiting cylinder 74 is sleeved with the lower end of the rotating shaft 72. The limiting cylinder 74 serves as an isolation device.

[0037] The lower surface of the limiting plate 73 is symmetrically provided with sliding grooves 731, which are movably connected to the transverse moving frame 75. The upper surface of the upper frame 751 is provided with a sliding strip 7511 that matches the sliding groove 731. The transverse moving frame 75 can move laterally within the sliding groove 731. A guide rod 732 is provided on one side of the sliding groove 731. A longitudinal moving plate 76 is sleeved on the guide rod 732, and a support spring 733 is sleeved on the end of the guide rod 732. One end of the support spring 733 abuts against the longitudinal moving plate 76. The support spring 733 always applies pressure to the longitudinal moving plate 76, causing the longitudinal moving plate 76 to move closer to the transverse moving frame 75.

[0038] Specifically, when the transverse moving frame 75 moves, it contacts the longitudinal moving plate 76, pushing the longitudinal moving plate 76 to move in the direction of the support spring 733.

[0039] The transverse moving frame 75 includes an upper frame 751, a lower frame 752, and a pressing plate 753. The upper and lower ends of the pressing plate 753 are respectively provided with the upper frame 751 and the lower frame 752. A rotating shaft 72 passes through the upper frame 751. The lower frame 752 is sleeved with the limiting cylinder 74. The lower frame 752 supports the lower end of the pressing plate 753, improving the overall stability. Both the pressing plate 753 and the longitudinal moving plate 76 are provided with leakage holes to allow liquid to pass through.

[0040] The inner wall of the upper frame 751 is provided with internal teeth 7512, which mesh with the incomplete gear 722 provided on the rotating shaft 72. Both the upper frame 751 and the lower frame 752 are provided with first protrusions 7513.

[0041] Specifically, when the rotating shaft 72 rotates, it drives the incomplete gear 722 to rotate. Under the action of the internal gear 7512, the upper frame 751 moves back and forth in the slide groove 731. The extrusion plate 753 extrudes the liquid in the synthesis vessel 2 back and forth, accelerating the reaction. At the same time, the liquid at the edge of the synthesis vessel 2 is closest to the heating layer 21. Extruding the liquid can accelerate the mixing of the solution and improve the uniformity of temperature.

[0042] The upper and lower ends of the longitudinal moving plate 76 are provided with second protrusions 761, which abut against the first protrusion 7513. The sidewalls of the second protrusion 761 and the first protrusion 7513 are both arc-shaped. A collar 762 is fixedly connected to the upper surface of the second protrusion 761, and the collar 762 is sleeved with the guide rod 732.

[0043] Specifically, when the rotating shaft 72 rotates, the first protrusion 7513 moves back and forth with the upper frame 751. When the most protruding position of the first protrusion 7513 presses against the second protrusion 761, it drives the second protrusion 761 to move along the guide rod 732. When the most protruding position of the first protrusion 7513 moves off the second protrusion 761, the support spring 733 pushes the longitudinal moving plate 76 to reset. The longitudinal moving plate 76 squeezes the liquid in the synthesis vessel 2 in another direction.

[0044] The outlet of the synthesis reactor 2 is connected to a centrifuge 3, and the outlet of the centrifuge 3 is connected to a crude product storage tank 4. The liquid obtained after centrifugation in the crude product storage tank 4 is loaded into the crude product storage tank 4. A distillation column 5 is installed at the output end of the crude product storage tank 4. The distillation column 5 is connected to a recovery tank 6. The recovery tank 6 includes a cyclohexylamine recovery tank 61 and a finished product recovery tank 62. Both the cyclohexylamine recovery tank 61 and the finished product recovery tank 62 are connected to the distillation column 5. Different materials are recovered at different temperatures. The cyclohexylamine recovery tank 61 is connected to the synthesis reactor 2.

[0045] To better illustrate the production process of the cyclohexylaminosilane coupling agent production unit, this embodiment presents a production process for cyclohexylaminosilane coupling agents, including the following steps:

[0046] S1 Synthesis: Cyclohexylamine is added to synthesis reactor 2 from cyclohexylamine feed tank 11 via a metering pump. Synthesis reactor 2 is heated to 60-70℃ and then heating is stopped. Chloropropylsiloxane is added dropwise to synthesis reactor 2 from chloropropylsiloxane feed tank 12 via a metering pump, using a dropwise addition method at 1-2... The addition is completed within h; the synthesis reactor 2 continues to heat up to 100-110℃, the drive motor 71 is turned on, the spiral blade 721 rotates with the rotating shaft 72, pushing the liquid in the limiting cylinder 74 upward, the liquid inlet 741 is used for external liquid to enter the limiting cylinder 74, at the same time the incomplete gear 722 rotates, the upper frame 751 moves back and forth in the slide groove 731 under the action of the internal gear 7512, the extrusion plate 753 extrudes the liquid in the synthesis reactor 2 back and forth, the first protrusion 7513 extrudes the second protrusion 761, the longitudinal moving plate 76 extrudes the liquid back and forth, accelerates the reaction, improves the temperature uniformity, and keeps it warm and refluxed for 2-3 hours; after the heat preservation is completed, the cyclohexylamine is heated up and recovered to the cyclohexylamine recovery tank 61, and the process ends when the reactor temperature reaches 140℃;

[0047] S2 Separation: The cooling system is turned on to cool down the synthesis kettle 2, and a large amount of crystallized salt is precipitated. The mixture is pumped into the centrifuge 3 by a metering pump for centrifugal separation, and the liquid is stored in the crude product storage tank 4.

[0048] S3 Distillation: The crude product is pumped into distillation column 5, and the vacuum degree in distillation column 5 is controlled at -0.098MPa. Distillation is carried out by heating. When the temperature at the top of distillation column 5 is 30-70℃, cyclohexylamine is recovered to cyclohexylamine recovery tank 61. When the temperature at the top of the column reaches 120℃, the finished product is collected to finished product recovery tank 62 until the temperature at the bottom reaches 160-170℃, and the finished product collection ends.

[0049] In summary, the cyclohexylaminosilane coupling agent production apparatus and its production process proposed in this invention are equipped with a continuous processing synthesis kettle 2, a centrifuge 3, and a distillation column 5, which facilitates the synthesis, separation, and distillation of the cyclohexylaminosilane coupling agent. A stirring and reflux assembly 7 is installed in the synthesis kettle 2, and a drive motor 71 drives a rotating shaft 72 to rotate. The spiral blades 721 follow the rotation of the rotating shaft 72, pushing the liquid in the limiting cylinder 74 upwards to form reflux, which improves the temperature uniformity within the synthesis kettle 2. Simultaneously, the rotating shaft 72 drives the incomplete gear 722 to rotate, controlling the reciprocating lateral movement of the transverse moving frame 75. The transverse moving frame 75, in turn, controls the longitudinal moving plate 76 to work longitudinally. Through the reciprocating movement of the extrusion plate 753 and the longitudinal moving plate 76, the liquid with a higher temperature at the edge of the synthesis kettle 2 is mixed with the liquid with a lower temperature inside the synthesis kettle 2, improving temperature uniformity and accelerating the liquid reaction, thus increasing the reaction rate.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] 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 cyclohexylaminosilane coupling agent production apparatus, comprising a synthesis vessel (2), a centrifuge (3), and a distillation column (5), characterized in that: The inlet of the synthesis reactor (2) is equipped with a metering tank (1), the outlet of the synthesis reactor (2) is connected to a centrifuge (3), the outlet of the centrifuge (3) is connected to a crude product storage tank (4), the output end of the crude product storage tank (4) is equipped with a distillation column (5), the distillation column (5) is connected to a recovery tank (6), the recovery tank (6) includes a cyclohexylamine recovery tank (61) and a finished product recovery tank (62), both the cyclohexylamine recovery tank (61) and the finished product recovery tank (62) are connected to the distillation column (5), and the cyclohexylamine recovery tank (61) is connected to the synthesis reactor (2); The synthesis vessel (2) is provided with a heating layer (21) on the outside, and a discharge port is provided at the lower end of the synthesis vessel (2). The discharge port is connected to a centrifuge (3) through a metering pump. A stirring and reflux assembly (7) is provided inside the synthesis vessel (2). The stirring reflux assembly (7) includes a drive motor (71), a rotating shaft (72), a limiting plate (73), a limiting cylinder (74), a transverse moving frame (75), and a longitudinal moving plate (76). The limiting plate (73) is fixedly connected to the upper end of the inside of the synthesis vessel (2). The rotating shaft (72) is connected through the center of the limiting plate (73). The upper end of the rotating shaft (72) passes through the synthesis vessel (2) and is fixedly connected to the drive motor (71). The transverse moving frame (75) and the longitudinal moving plate (76) are movably connected to the lower surface of the limiting plate (73). The lower end of the limiting cylinder (74) is fixedly connected to the lower end of the inside of the synthesis vessel (2), and the limiting cylinder (74) is sleeved with the lower end of the rotating shaft (72). The rotating shaft (72) is fixedly connected to a spiral blade (721) at the position inside the limiting cylinder (74). The lower end of the limiting cylinder (74) is provided with liquid inlets (741) at equal intervals. The lower surface of the limiting plate (73) is symmetrically provided with a sliding groove (731), the sliding groove (731) is movably connected to the transverse moving frame (75), a guide rod (732) is provided on one side of the sliding groove (731), a longitudinal moving plate (76) is sleeved on the guide rod (732), and a support spring (733) is sleeved on the end of the guide rod (732), and one end of the support spring (733) abuts against the longitudinal moving plate (76); The transverse moving frame (75) includes an upper frame (751), a lower frame (752) and an extrusion plate (753). The upper and lower ends of the extrusion plate (753) are respectively provided with an upper frame (751) and a lower frame (752). A rotating shaft (72) passes through the upper frame (751), and the lower frame (752) is sleeved with a limiting cylinder (74).

2. The cyclohexylaminosilane coupling agent production apparatus according to claim 1, characterized in that: There are two metering tanks (1), one is a cyclohexylamine raw material tank (11) and the other is a chloropropylsiloxane raw material tank (12). Both the cyclohexylamine raw material tank (11) and the chloropropylsiloxane raw material tank (12) are connected to the synthesis vessel (2) through metering pumps.

3. The cyclohexylaminosilane coupling agent production apparatus according to claim 2, characterized in that: The upper surface of the upper frame (751) is provided with a slide bar (7511) that matches the slide groove (731). The inner wall of the upper frame (751) is provided with an internal tooth (7512), which meshes with an incomplete gear (722) provided on the rotating shaft (72). Both the upper frame (751) and the lower frame (752) are provided with a first protrusion (7513).

4. The cyclohexylaminosilane coupling agent production apparatus according to claim 3, characterized in that: The upper and lower ends of the longitudinal moving plate (76) are provided with second protrusions (761), the second protrusions (761) abut against the first protrusions (7513), and a collar (762) is fixedly connected to the upper surface of the second protrusions (761), and the collar (762) is sleeved with the guide rod (732).

5. A production process for a cyclohexylaminosilane coupling agent, comprising using the production apparatus for the cyclohexylaminosilane coupling agent as described in claim 4, characterized in that... Includes the following steps: S1 Synthesis: Cyclohexylamine is added to the synthesis reactor (2) from the cyclohexylamine raw material tank (11) via a metering pump. The synthesis reactor (2) is heated to 60-70℃ and then heating is stopped. Chloropropylsiloxane is added dropwise to the synthesis reactor (2) from the chloropropylsiloxane raw material tank (12) via a metering pump. The addition is completed within 1-2 hours by dropwise addition. The synthesis reactor (2) is heated to 100-110℃, and the drive motor (71) is turned on. The reactor is kept warm and refluxed for 2-3 hours. After the heat preservation is completed, the cyclohexylamine is heated and recovered to the cyclohexylamine recovery tank (61) until the temperature of the tank reaches 140°C. S2 separation: The cooling system is turned on to cool down the synthesis kettle (2), a large amount of crystallized salt is precipitated, and the mixture is pumped into the centrifuge (3) by the metering pump for centrifugal separation. The liquid is then stored in the crude product storage tank (4). S3 Distillation: The crude product is pumped into the distillation column (5), and the vacuum degree in the distillation column (5) is controlled to be -0.098MPa. The distillation is carried out by heating. The temperature at the top of the distillation column (5) is 30-70℃. Cyclohexylamine is recovered to the cyclohexylamine recovery tank (61). When the temperature at the top of the column reaches 120℃, the finished product is collected to the finished product recovery tank (62) until the temperature at the bottom reaches 160-170℃, and the finished product collection ends.

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