Continuous production device and method for isooctyl stearate based on green catalyst

Abstract

The invention relates to the technical field of chemical production, and discloses an isooctyl stearate continuous production device and method based on a green catalyst, and the isooctyl stearate continuous production device based on the green catalyst comprises a feeding mechanism, a preheating mechanism, a reactor and a separation mechanism, the reactor comprises a reaction kettle and a catalytic bed, the catalytic bed is arranged in the reaction kettle, a material distributing mechanism, a stirring mechanism, a driving mechanism and a linkage mechanism are arranged in the reaction kettle, and a first temperature sensor and a second temperature sensor are fixedly installed on the inner wall of the reaction kettle. The reaction kettle is reasonable in design, raw materials can be preheated through the arranged preheating mechanism, the temperatures of different positions in the reaction kettle can be monitored through the arranged material distributing mechanism, stirring mechanism, linkage mechanism and driving mechanism, the stirring speed and the feeding rate are adjusted in real time, it is ensured that the reaction is conducted in a relatively stable temperature environment, and the reaction efficiency is improved. Therefore, the purity and quality of the product are improved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical production, and in particular to a device and method for continuously producing isooctyl stearate based on a green catalyst. Background Art

[0002] Isooctyl stearate is an important ester compound and is widely used in many industries such as cosmetics, plastics, and lubricants. The traditional production process of isooctyl stearate often has some shortcomings. On the one hand, the catalyst used may not be environmentally friendly and contain toxic and harmful substances, which may cause potential harm to the health of operators and the environment during the production process and subsequent treatment; on the other hand, the existing production methods are mostly intermittent production, with relatively low production efficiency and poor product quality stability, which is difficult to meet the needs of large-scale industrial production; therefore, we propose a continuous production device and method of isooctyl stearate based on a green catalyst to solve this problem. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology, and to propose a continuous production device and method of isooctyl stearate based on a green catalyst.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A green catalyst-based continuous production device for isooctyl stearate comprises: a feeding mechanism, a preheating mechanism, a reactor and a separation mechanism, wherein the reactor comprises: a reaction kettle and a catalyst bed, wherein the catalyst bed is arranged in the reaction kettle, wherein a catalyst is arranged in the catalyst bed, wherein a distribution mechanism, a stirring mechanism, a driving mechanism and a linkage mechanism are arranged in the reaction kettle, and wherein a first temperature sensor and a second temperature sensor are fixedly mounted on the inner wall of the reaction kettle.

[0005] Preferably, fixing rods are fixedly installed on the inner walls of both sides of the reactor, and the same fixed cylinder is fixedly installed on one end of the two fixing rods close to each other, and the material distribution mechanism comprises: a material distribution box, a connecting disk, a connecting cylinder and a plurality of valve plates, the valve plate is slidably installed on the bottom of the fixed cylinder, and a plurality of discharge ports are opened at the bottom of the material distribution box, a linkage rod is hinged at the bottom of the valve plate, and the linkage rod is hinged to the outer side of the connecting disk, a connecting rod is fixedly installed at the bottom of the connecting disk, and the connecting cylinder is rotatably installed on the top of the fixed cylinder, a plurality of guide rails are fixedly installed at the bottom of the material distribution box, the valve plate is slidably sleeved on the outer side of the corresponding guide rails, and a support frame is fixedly installed on the outer side of the connecting cylinder, and the support frame is fixedly connected to the bottom of the material distribution box.

[0006] Preferably, the stirring mechanism includes: a rotating drum and a rotating frame, the rotating drum is rotatably mounted on the bottom of the fixed drum, a plurality of stirring paddles are fixedly mounted on the outer side of the rotating drum, the rotating frame is fixedly mounted on the bottom end of the connecting rod, a mounting rod is fixedly mounted on the outer side of the rotating frame, a stirring blade is fixedly mounted on the inner side of the mounting rod, and the stirring blade is arranged at an angle.

[0007] Preferably, the driving mechanism includes: a driving motor, a driving bevel gear, a first driven bevel gear and a second driven bevel gear, the driving motor is fixedly mounted on the outside of the reactor, a driving shaft is fixedly mounted on the output shaft of the driving motor, the driving shaft is rotatably mounted on the side wall of the fixed cylinder, the driving bevel gear is fixedly mounted on the other end of the driving shaft, the first driven bevel gear and the second driven bevel gear are both meshed with the driving bevel gear, the second driven bevel gear is fixedly sleeved on the outside of the connecting cylinder, the first driven bevel gear is fixedly sleeved on the outside of the rotating cylinder, the outside of the connecting cylinder is fixedly sleeved with a limiting ring, and the limiting ring movably abuts against the top of the fixed cylinder.

[0008] Preferably, the linkage mechanism includes: a cross bar, a fixed ring and two sliding frames, the fixed ring is fixedly sleeved on the outside of the connecting tube, L rods are fixedly installed on both sides of the fixed ring, the sliding frame is slidably sleeved on the outside of the corresponding L rod, the front and rear sides of the sliding frame are hinged with arc-shaped connecting rods, both ends of the cross bar are fixedly installed with connecting frames, the connecting frame is slidably sleeved on the outside of the corresponding L rod, the other end of the arc-shaped connecting rod is rotatably connected to the corresponding connecting frame, a through hole is opened on one side of the connecting rod, the cross bar passes through the through hole, and the connecting rod is slidably installed in the connecting tube.

[0009] Preferably, the feeding mechanism comprises: two storage tanks, the preheating mechanism comprises: a preheating box and two groups of conveying mechanisms, the two sides of the preheating box are respectively connected with a water inlet and a water outlet, the conveying mechanism comprises: a pump body, a pumping pipe and a heat conduction pipe, the pumping pipe and the heat conduction pipe are respectively connected with the inlet and outlet of the pump body, the other end of the pumping pipe extends into the corresponding storage tank, the pumping pipe is provided with a flow meter, a controller is fixedly installed on the top of the preheating box, the other end of the heat conduction pipe is connected with the reactor, and the heat conduction pipe runs through the preheating box.

[0010] Preferably, the separation mechanism includes: a distillation tank and a feed pump, the feed pump is fixedly installed on the outside of the distillation tank, the feed inlet and the discharge port of the feed pump are respectively connected to a feed pipe and a discharge pipe, the other end of the discharge pipe is connected to the distillation tank, the other end of the feed pipe is connected to the reactor, and the top of the distillation tank is connected to a connecting pipe.

[0011] Preferably, a heating ring is fixedly installed in the reactor, a protective shell is fixedly installed on the inner side of the heating ring, return springs are fixedly installed on both sides of the top of the cross bar, a baffle rod is fixedly installed on the other end of the return spring, and the other end of the baffle rod is fixedly connected to the corresponding L rod.

[0012] The present invention also provides a continuous production method of isooctyl stearate based on a green catalyst, comprising the following steps: S1: Add stearic acid and isooctyl alcohol to their respective storage tanks, turn on the pump, extract stearic acid and isooctyl alcohol through the extraction pipe, and introduce them into the material distribution box in the reactor through the heat conduction pipe. Use the flow meter to accurately control the flow of the two raw materials, and introduce hot water from the water inlet to preheat the raw materials in the heat conduction pipe; S2: Start the driving motor to drive the driving shaft to rotate, the driving shaft drives the active bevel gear to rotate, the active bevel gear drives the connecting cylinder to rotate by meshing with the second driven bevel gear, the connecting cylinder drives the material distribution box to rotate through the support frame, so that the material is evenly distributed in the catalyst bed, the raw materials in the reactor are heated by starting the heating ring, and the raw materials are esterified under the action of the catalyst, the reaction materials flow from top to bottom in the catalyst bed, and the crude product of isooctyl stearate is continuously generated; S3, the rotating drum and the stirring blade are driven to rotate by the meshing of the driving bevel gear and the first driven bevel gear, and at the same time, the connecting rod rotates in the opposite direction relative to the rotating drum, and drives the stirring blade to rotate in the opposite direction, thereby increasing the material mixing reaction speed; S4: The temperatures at different positions inside the reactor are monitored by the first temperature sensor and the second temperature sensor, and the signals are transmitted to the controller. The controller analyzes the temperature difference at different positions. When the temperature difference is greater than the set value, the controller controls the output end of the drive motor to accelerate the rotation, thereby accelerating the rotation speed of the stirring paddle, the connecting tube and the stirring blade, improving the stirring effect, and at the same time, the connecting tube drives the L rod and the sliding frame to perform circular motion at a higher speed through the fixed ring, so that the two sliding frames move away from each other under the action of centrifugal force, and drives the connecting frame to move upward through the arc connecting rod, and the connecting frame drives the cross bar to move upward, and the cross bar drives the connecting rod The connecting rod moves upward, and the connecting rod drives the stirring blade to rotate and move upward at the same time, so that the gap between the adjacent stirring blades and the stirring paddle becomes smaller, and because the rotation speed of the stirring blade and the stirring paddle is opposite, more refined stirring and mixing can be performed, and at the same time, the connecting rod drives the connecting plate to move upward, and the connecting plate drives multiple valve plates to move away from each other through the linkage rod, so that the valve plate gradually blocks the discharge port, thereby reducing the material thrown out of the discharge port, thereby slowing down the feeding speed, so as to facilitate the full mixing and reaction of the materials on the catalytic bed, and increase the residence time of the materials on the material distribution box, so as to facilitate pre-mixing; S4: Start the pump to introduce the reacted material into the distillation tank. The material is distilled under the negative pressure provided by the distillation tank. Isooctyl stearate is vaporized and rises preferentially due to its relatively low boiling point, and is separated and purified.

[0013] Compared with the prior art, the present invention provides a continuous production device and method of isooctyl stearate based on a green catalyst, which has the following beneficial effects: (1) By adding stearic acid and isooctyl alcohol into their respective storage tanks, and using a pump, a pumping pipe and a flow meter to accurately control the flow of the two raw materials, this design ensures that the raw materials are stably input into the reaction system according to the set ratio, providing a reliable material basis for subsequent reactions. At the same time, the raw materials are preheated by introducing hot water from the water inlet into the heat pipe, which not only increases the initial temperature of the raw materials, making them closer to the temperature required for the reaction, and reduces the time required for the reaction to reach equilibrium, but also helps to increase the reaction rate and conversion rate. The preheating process enables the raw material molecules to obtain more energy, increases the collision frequency and effective collision probability between molecules, thereby accelerating the reaction process and improving production efficiency.

[0014] (2) During the reaction process, the drive motor drives a series of transmission components such as the drive shaft, active bevel gear, and driven bevel gear to achieve the coordinated rotation of the distribution box, connecting tube, and stirring blades. This stirring method enables the material to be evenly distributed in the catalytic bed, avoiding the situation of excessively high or low local concentrations, which is conducive to the full progress of the reaction. In particular, the stirring blade can move up and down while rotating, and the gap between adjacent stirring blades and stirring paddles becomes smaller and the rotation direction is opposite. This refined stirring and mixing method can make the contact between materials more complete and improve the uniformity and selectivity of the reaction. At the same time, the connecting rod drives the connecting plate to move upward, and then drives the valve plate to block the discharge port, slowing down the feed speed, further increasing the residence time of the material in the distribution box, providing more favorable conditions for pre-mixing, and helping to improve the conversion rate of the reaction and product quality; (3) The first temperature sensor and the second temperature sensor can monitor the temperature at different positions inside the reactor in real time. The temperature signal is transmitted to the controller, which analyzes the temperature difference at different positions and automatically adjusts the output speed of the drive motor according to the preset value. When the temperature difference is greater than the set value, the rotation speed of the stirring paddle, the connecting tube and the stirring blade is accelerated to improve the stirring effect. This intelligent temperature monitoring and control system can respond to temperature changes during the reaction process in a timely manner to ensure that the reaction is carried out in a relatively stable temperature environment. Stable temperature conditions are crucial for esterification reactions. It can not only improve the selectivity and yield of the reaction, but also reduce the occurrence of side reactions, thereby improving the purity and quality of the product. (4) Through the distillation operation, impurities and unreacted raw materials in the reaction product can be removed to obtain a high-purity isooctyl stearate product. At the same time, the negative pressure environment can also reduce the distillation temperature, avoiding adverse effects such as thermal decomposition of the product caused by high temperature, thereby further improving the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention provides a schematic diagram of the three-dimensional structure of a continuous production device for isooctyl stearate based on a green catalyst.

[0016] Figure 2 The present invention provides a schematic cross-sectional structural diagram of a continuous production device for isooctyl stearate based on a green catalyst.

[0017] Figure 3 This is a schematic cross-sectional structural diagram of the reactor proposed in the present invention.

[0018] Figure 4 for Figure 3 A partial enlarged view of part A.

[0019] Figure 5 for Figure 3 A partial enlarged view of part B.

[0020] Figure 6 for Figure 3 A partial enlarged view of part C.

[0021] Figure 7 This is a schematic diagram of the partial three-dimensional structure of the reactor proposed in the present invention.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the material distributing mechanism proposed in the present invention.

[0023] Fig. 9 It is a three-dimensional structural schematic diagram of the linkage mechanism proposed in the present invention.

[0024] In the figure: 1, storage tank; 2, preheating box; 201, pump body; 202, extraction pipe; 203, flow meter; 204, heat pipe; 3, reactor; 301, catalyst bed; 302, first temperature sensor; 303, second temperature sensor; 304, heating ring; 305, protective shell; 4, distillation tank; 401, connecting pipe; 402, extraction pump; 403, discharge pipe; 5, material distribution mechanism; 501, material distribution box; 502, linkage rod; 503, valve plate; 504, connecting plate; 505, connecting rod; 506, connecting cylinder; 507, support frame; 508, guide Rail; 509, discharge port; 6, stirring mechanism; 601, rotating drum; 602, stirring paddle; 603, rotating frame; 604, mounting rod; 605, stirring blade; 7, driving mechanism; 701, driving motor; 702, driving shaft; 703, driving bevel gear; 704, first driven bevel gear; 705, second driven bevel gear; 8, linkage mechanism; 801, cross bar; 802, fixing ring; 803, L rod; 804, sliding frame; 805, connecting frame; 806, arc connecting rod; 807, reset spring; 9, fixing drum; 901, fixing rod; 10, controller. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Reference Figure 1-9 A continuous production device of isooctyl stearate based on a green catalyst comprises: a feeding mechanism, a preheating mechanism, a reactor and a separation mechanism. The reactor comprises: a reactor 3 and a catalyst bed 301. The catalyst bed 301 is arranged in the reactor 3. The catalyst is arranged in the catalyst bed 301. The reactor 3 is provided with a distribution mechanism 5, a stirring mechanism 6, a driving mechanism 7 and a linkage mechanism 8. A first temperature sensor 302 and a second temperature sensor 303 are fixedly installed on the inner wall of the reactor 3.

[0028] In this embodiment, fixed rods 901 are fixedly installed on the inner walls of both sides of the reactor 3, and the same fixed cylinder 9 is fixedly installed on the ends of the two fixed rods 901 that are close to each other. The material distribution mechanism 5 includes: a material distribution box 501, a connecting disk 504, a connecting cylinder 506 and a plurality of valve plates 503. The valve plate 503 is slidably installed at the bottom of the fixed cylinder 9. A plurality of discharge ports 509 are provided at the bottom of the material distribution box 501. A linkage rod 502 is hinged at the bottom of the valve plate 503. The linkage rod 502 is hinged to the outer side of the connecting disk 504. A connecting rod 505 is fixedly installed at the bottom of the connecting disk 504. The connecting cylinder 506 is rotatably installed on the top of the fixed cylinder 9. A plurality of guide rails 508 are fixedly installed at the bottom of the material distribution box 501. The valve plate 503 is slidably sleeved on the outer side of the corresponding guide rails 508. A support frame 507 is fixedly installed on the outer side of the connecting cylinder 506. The support frame 507 is fixedly connected to the bottom of the material distribution box 501.

[0029] In this embodiment, the stirring mechanism 6 includes: a rotating drum 601 and a rotating frame 603. The rotating drum 601 is rotatably installed at the bottom of the fixed drum 9. A plurality of stirring paddles 602 are fixedly installed on the outer side of the rotating drum 601. The rotating frame 603 is fixedly installed on the bottom end of the connecting rod 505. A mounting rod 604 is fixedly installed on the outer side of the rotating frame 603. A stirring blade 605 is fixedly installed on the inner side of the mounting rod 604. The stirring blade 605 is arranged to be inclined.

[0030] In this embodiment, the driving mechanism 7 includes: a driving motor 701, a driving bevel gear 703, a first driven bevel gear 704 and a second driven bevel gear 705. The driving motor 701 is fixedly mounted on the outside of the reactor 3. A driving shaft 702 is fixedly mounted on the output shaft of the driving motor 701. The driving shaft 702 is rotatably mounted on the side wall of the fixed cylinder 9. The driving bevel gear 703 is fixedly mounted on the other end of the driving shaft 702. The first driven bevel gear 704 and the second driven bevel gear 705 are both meshed with the driving bevel gear 703. The second driven bevel gear 705 is fixedly sleeved on the outside of the connecting cylinder 506. The first driven bevel gear 704 is fixedly sleeved on the outside of the rotating cylinder 601. The outside of the connecting cylinder 506 is fixedly sleeved with a limiting ring, and the limiting ring movably abuts against the top of the fixed cylinder 9.

[0031] In this embodiment, the linkage mechanism 8 includes: a cross bar 801, a fixed ring 802 and two sliding frames 804. The fixed ring 802 is fixedly sleeved on the outer side of the connecting tube 506. L rods 803 are fixedly installed on both sides of the fixed ring 802. The sliding frames 804 are slidably sleeved on the outer sides of the corresponding L rods 803. The front and rear sides of the sliding frames 804 are hinged with arc-shaped connecting rods 806. Connecting frames 805 are fixedly installed on both ends of the cross bar 801. The connecting frames 805 are slidably sleeved on the outer sides of the corresponding L rods 803. The other end of the arc-shaped connecting rod 806 is rotatably connected to the corresponding connecting frame 805. A through hole is opened on one side of the connecting rod 505. The cross bar 801 passes through the through hole. The connecting rod 505 is slidably installed in the connecting tube 506.

[0032] In this embodiment, the feeding mechanism includes: two storage tanks 1, the preheating mechanism includes: a preheating box 2 and two groups of conveying mechanisms, the two sides of the preheating box 2 are respectively connected with a water inlet and a water outlet, the conveying mechanism includes: a pump body 201, a pumping pipe 202 and a heat pipe 204, the pumping pipe 202 and the heat pipe 204 are respectively connected with the inlet and outlet of the pump body 201, the other end of the pumping pipe 202 extends into the corresponding storage tank 1, the pumping pipe 202 is provided with a flow meter 203, the top of the preheating box 2 is fixedly installed with a controller 10, the other end of the heat pipe 204 is connected with the reactor 3, and the heat pipe 204 runs through the preheating box 2.

[0033] In this embodiment, the separation mechanism includes: a distillation tank 4 and a feed pump 402, the feed pump 402 is fixedly installed on the outside of the distillation tank 4, the feed port and the discharge port 509 of the feed pump 402 are respectively connected to a feed pipe and a discharge pipe 403, the other end of the discharge pipe 403 is connected to the distillation tank 4, the other end of the feed pipe is connected to the reactor 3, and the top of the distillation tank 4 is connected to a connecting pipe 401.

[0034] In this embodiment, a heating ring 304 is fixedly installed in the reactor 3, a protective shell 305 is fixedly installed on the inner side of the heating ring 304, reset springs 807 are fixedly installed on both sides of the top of the cross bar 801, a baffle rod is fixedly installed on the other end of the reset spring 807, and the other end of the baffle rod is fixedly connected to the corresponding L rod 803, thereby realizing the resetting of the cross bar 801.

[0035] The present invention also provides a continuous production method of isooctyl stearate based on a green catalyst, comprising the following steps: S1: Stearic acid and isooctyl alcohol are added to their respective storage tanks 1, the pump body 201 is turned on, stearic acid and isooctyl alcohol are extracted through the extraction pipe 202, and introduced into the material distribution box 501 in the reaction kettle 3 through the heat conduction pipe 204, the flow rate of the two raw materials is accurately controlled by the flow meter 203, and hot water is introduced from the water inlet to preheat the raw materials in the heat conduction pipe 204; S2: Start the driving motor 701 to drive the driving shaft 702 to rotate, the driving shaft 702 drives the active bevel gear 703 to rotate, the active bevel gear 703 drives the connecting cylinder 506 to rotate by meshing with the second driven bevel gear 705, the connecting cylinder 506 drives the material distribution box 501 to rotate through the support frame 507, so that the material is evenly distributed in the catalyst bed 301, and the raw materials in the reactor 3 are heated by starting the heating ring 304, and the raw materials are esterified under the action of the catalyst, and the reaction materials flow from top to bottom in the catalyst bed layer to continuously generate the crude product of isooctyl stearate; S3, the rotating drum 601 and the stirring blade 602 are driven to rotate by the meshing of the driving bevel gear 703 and the first driven bevel gear 704, and at the same time, the connecting rod 505 rotates in the opposite direction relative to the rotating drum 601, and drives the stirring blade 605 to rotate in the opposite direction, thereby increasing the material mixing reaction speed; S4: The temperatures at different positions inside the reactor 3 are monitored by the first temperature sensor 302 and the second temperature sensor 303, and the signals are transmitted to the controller 10. The controller 10 analyzes the temperature difference at different positions. When the temperature difference is greater than the set value, the controller 10 controls the output end of the drive motor 701 to accelerate the rotation, thereby accelerating the rotation speed of the stirring paddle 602, the connecting tube 506 and the stirring blade 605, improving the stirring effect, and at the same time, the connecting tube 506 drives the L rod 803 and the sliding frame 804 to perform circular motion through the fixing ring 802, so that the two sliding frames 804 move away from each other under the action of centrifugal force, and drive the connecting frame 805 to move upward through the arc connecting rod 806, and the connecting frame 805 drives the cross bar 801 to move upward, and the cross bar 801 drives The movable connecting rod 505 moves upward, and the connecting rod 505 drives the stirring blade 605 to rotate and move upward at the same time, so that the gap between the adjacent stirring blades 605 and the stirring paddle 602 becomes smaller, and because the rotation speeds of the stirring blade 605 and the stirring paddle 602 are opposite, more refined stirring and mixing can be performed, and at the same time, the connecting rod 505 drives the connecting plate 504 to move upward, and the connecting plate 504 drives the multiple valve plates 503 to move away from each other through the linkage rod 502, so that the valve plate 503 gradually blocks the discharge port 509, thereby reducing the material thrown out of the discharge port 509, thereby slowing down the feeding speed, so as to facilitate the full mixing and reaction of the materials on the catalyst bed 301, and increase the residence time of the materials on the material distribution box 501, so as to facilitate pre-mixing; S5: Start the pump 402 to introduce the reacted material into the distillation tank 4. The material is distilled under the negative pressure provided by the distillation tank 4. Since isooctyl stearate has a relatively low boiling point, it is preferentially vaporized and rises for separation and purification.

[0036] In this embodiment, the preheating mechanism can be used to preheat the raw materials, and the distribution mechanism 5, stirring mechanism 6, linkage mechanism 8 and driving mechanism 7 can be used to monitor the temperature at different positions inside the reactor 3, and adjust the stirring speed and feed rate in real time to ensure that the reaction is carried out in a relatively stable temperature environment, thereby improving the purity and quality of the product.

[0037] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

Claims

1. A continuous production device for isooctyl stearate based on a green catalyst, characterized in that: include: A feeding mechanism, a preheating mechanism, a reactor and a separation mechanism, wherein the reactor comprises: a reactor (3) and a catalyst bed (301), wherein the catalyst bed (301) is arranged in the reactor (3), wherein a catalyst is arranged in the catalyst bed (301), wherein a distribution mechanism (5), a stirring mechanism (6), a driving mechanism (7) and a linkage mechanism (8) are arranged in the reactor (3), and a first temperature sensor (302) and a second temperature sensor (303) are fixedly mounted on the inner wall of the reactor (3).

2. The continuous production device of isooctyl stearate based on a green catalyst according to claim 1, characterized in that: Fixed rods (901) are fixedly mounted on the inner walls of both sides of the reaction kettle (3); the ends of the two fixed rods (901) close to each other are fixedly mounted with the same fixed cylinder (9); the material distribution mechanism (5) comprises: a material distribution box (501), a connecting plate (504), a connecting cylinder (506) and a plurality of valve plates (503); the valve plates (503) are slidably mounted on the bottom of the fixed cylinder (9); a plurality of discharge ports (509) are provided at the bottom of the material distribution box (501); a linkage rod (502) is hingedly connected to the bottom of the valve plate (503); and the linkage rod (502) is hingedly connected to the bottom of the valve plate (503). The movable rod (502) is hinged on the outer side of the connecting disk (504); a connecting rod (505) is fixedly installed on the bottom of the connecting disk (504); the connecting cylinder (506) is rotatably installed on the top of the fixed cylinder (9); a plurality of guide rails (508) are fixedly installed on the bottom of the material distribution box (501); the valve plate (503) is slidably sleeved on the outer sides of the corresponding guide rails (508); a support frame (507) is fixedly installed on the outer side of the connecting cylinder (506); and the support frame (507) is fixedly connected to the bottom of the material distribution box (501).

3. The continuous production device of isooctyl stearate based on green catalyst according to claim 2, characterized in that: The stirring mechanism (6) comprises: a rotating drum (601) and a rotating frame (603); the rotating drum (601) is rotatably mounted on the bottom of a fixed drum (9); a plurality of stirring paddles (602) are fixedly mounted on the outer side of the rotating drum (601); the rotating frame (603) is fixedly mounted on the bottom end of a connecting rod (505); a mounting rod (604) is fixedly mounted on the outer side of the rotating frame (603); a stirring blade (605) is fixedly mounted on the inner side of the mounting rod (604); and the stirring blade (605) is arranged in an inclined manner.

4. The continuous production device of isooctyl stearate based on green catalyst according to claim 3, characterized in that: The driving mechanism (7) comprises: a driving motor (701), a driving bevel gear (703), a first driven bevel gear (704) and a second driven bevel gear (705); the driving motor (701) is fixedly mounted on the outside of the reaction kettle (3); a driving shaft (702) is fixedly mounted on the output shaft of the driving motor (701); the driving shaft (702) is rotatably mounted on the side wall of the fixed cylinder (9); the driving bevel gear (703) is fixedly mounted on the other end of the driving shaft (702); the first driven bevel gear (704) and the second driven bevel gear (705) are both meshed with the driving bevel gear (703); the second driven bevel gear (705) is fixedly sleeved on the outside of the connecting cylinder (506); the first driven bevel gear (704) is fixedly sleeved on the outside of the rotating cylinder (601); a limiting ring is fixedly sleeved on the outside of the connecting cylinder (506); and the limiting ring movably abuts against the top of the fixed cylinder (9).

5. The continuous production device of isooctyl stearate based on green catalyst according to claim 4, characterized in that: The linkage mechanism (8) comprises: a cross bar (801), a fixing ring (802) and two sliding frames (804); the fixing ring (802) is fixedly sleeved on the outside of a connecting tube (506); L rods (803) are fixedly mounted on both sides of the fixing ring (802); the sliding frames (804) are slidably sleeved on the outside of the corresponding L rods (803); arc-shaped connecting rods (806) are hingedly mounted on the front and rear sides of the sliding frames (804); connecting frames (805) are fixedly mounted on both ends of the cross bar (801); the connecting frames (805) are slidably sleeved on the outside of the corresponding L rods (803); the other end of the arc-shaped connecting rod (806) is rotatably connected to the corresponding connecting frame (805); a through hole is opened on one side of the connecting rod (505); the cross bar (801) passes through the through hole; and the connecting rod (505) is slidably mounted in the connecting tube (506).

6. The continuous production device of isooctyl stearate based on green catalyst according to claim 5, characterized in that: The feeding mechanism comprises: two material storage tanks (1); the preheating mechanism comprises: a preheating box (2) and two groups of conveying mechanisms; the two sides of the preheating box (2) are respectively connected with a water inlet and a water outlet; the conveying mechanism comprises: a pump body (201), a material extraction pipe (202) and a heat conduction pipe (204); the material extraction pipe (202) and the heat conduction pipe (204) are respectively connected with the inlet and outlet of the pump body (201); the other end of the material extraction pipe (202) extends into the corresponding material storage tank (1); a flow meter (203) is provided on the material extraction pipe (202); a controller (10) is fixedly installed on the top of the preheating box (2); the other end of the heat conduction pipe (204) is connected with the reaction kettle (3), and the heat conduction pipe (204) runs through the preheating box (2).

7. The continuous production device of isooctyl stearate based on green catalyst according to claim 6, characterized in that: The separation mechanism comprises: a distillation tank (4) and a feed pump (402), wherein the feed pump (402) is fixedly mounted on the outside of the distillation tank (4), wherein a feed port and a discharge port (509) of the feed pump (402) are respectively connected to a feed pipe and a discharge pipe (403), wherein the other end of the discharge pipe (403) is connected to the distillation tank (4), and the other end of the feed pipe is connected to the reaction kettle (3), and the top of the distillation tank (4) is connected to a connecting pipe (401).

8. The continuous production device of isooctyl stearate based on green catalyst according to claim 7, characterized in that: A heating ring (304) is fixedly installed in the reactor (3), a protective shell (305) is fixedly installed on the inner side of the heating ring (304), return springs (807) are fixedly installed on both sides of the top of the cross bar (801), a blocking rod is fixedly installed on the other end of the return spring (807), and the other end of the blocking rod is fixedly connected to the corresponding L rod (803).

9. A method for continuously producing isooctyl stearate based on a green catalyst, applied to the continuous production device for isooctyl stearate based on a green catalyst according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Stearic acid and isooctyl alcohol are added to their respective storage tanks (1), the pump body (201) is turned on, stearic acid and isooctyl alcohol are extracted through the extraction pipe (202), and introduced into the distribution box (501) in the reaction kettle (3) through the heat conduction pipe (204), the flow rate of the two raw materials is accurately controlled by the flow meter (203), and hot water is introduced from the water inlet to preheat the raw materials in the heat conduction pipe (204); S2: starting the driving motor (701) to drive the driving shaft (702) to rotate, the driving shaft (702) drives the driving bevel gear (703) to rotate, the driving bevel gear (703) drives the connecting cylinder (506) to rotate by meshing with the second driven bevel gear (705), the connecting cylinder (506) drives the material distribution box (501) to rotate through the support frame (507), so that the material is evenly distributed in the catalyst bed (301), and the raw materials in the reaction kettle (3) are heated by starting the heating ring (304), and the raw materials are subjected to esterification reaction under the action of the catalyst, and the reaction materials flow from top to bottom in the catalyst bed layer, and the crude product of isooctyl stearate is continuously generated; S3, the rotating drum (601) and the stirring blade (602) are driven to rotate by meshing the driving bevel gear (703) with the first driven bevel gear (704), and at the same time, the connecting rod (505) rotates in the opposite direction relative to the rotating drum (601), and drives the stirring blade (605) to rotate in the opposite direction, thereby increasing the material mixing reaction speed; S4: The temperatures at different positions inside the reactor (3) are monitored by the first temperature sensor (302) and the second temperature sensor (303), and the signals are transmitted to the controller (10). The controller (10) analyzes the temperature difference at different positions. When the temperature difference is greater than the set value, the controller (10) controls the output end of the drive motor (701) to accelerate the rotation, thereby accelerating the rotation speed of the stirring paddle (602), the connecting tube (506) and the stirring blade (605), thereby improving the stirring effect. At the same time, the connecting tube (506) drives the L rod (803) and the sliding frame (804) to perform circular motion at an increased speed through the fixing ring (802), so that the two sliding frames (804) move away from each other under the action of centrifugal force, and drive the connecting frame (805) to move upward through the arc connecting rod (806). The connecting frame (805) drives the cross bar (801) to move upward, and the cross bar (801) 1) driving the connecting rod (505) to move upward, and the connecting rod (505) drives the stirring blade (605) to rotate and move upward at the same time, so that the gap between the adjacent stirring blades (605) and the stirring paddle (602) becomes smaller, and because the rotation speeds of the stirring blade (605) and the stirring paddle (602) are opposite, more refined stirring and mixing can be performed, and at the same time, the connecting rod (505) drives the connecting plate (504) to move upward, and the connecting plate (504) drives the plurality of valve plates (503) to move away from each other through the linkage rod (502), so that the valve plate (503) gradually blocks the discharge port (509), thereby reducing the material thrown out of the discharge port (509), thereby slowing down the feeding speed, so as to facilitate the full mixing and reaction of the materials on the catalyst bed (301), and to increase the residence time of the materials on the material distribution box (501), so as to facilitate pre-mixing; S5: Start the pump (402) to introduce the reacted material into the distillation tank (4). The material is distilled under the negative pressure provided by the distillation tank (4). Since isooctyl stearate has a relatively low boiling point, it is preferentially vaporized and rises, and is separated and purified.

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