Intelligent separation and purification device and process for synthesis of pyridine base mixture

Abstract

The application discloses an intelligent separation and purification device and process for pyridine base mixture synthesis, and belongs to the field of pyridine base purification. The intelligent separation and purification device for pyridine base mixture synthesis comprises a device shell, a vacuum pump and an air pressure valve are arranged in the inside of a vacuum machine shell; a fixed cover plate, a telescopic shaft is arranged at the lower end of a servo motor; a sliding groove is arranged between a material collecting base and the device shell; a lifting mixing disc, an electric cylinder is arranged at the lower end of the lifting mixing disc; and an adjusting disc, a gear disc is welded to the outer surface of the adjusting disc. The application solves the problem of simple structure, general mixing and separation effect and influence on work quality of the prior art, and efficient mixing work can be carried out through the stirring paddle at the upper end of the lifting mixing disc and the stirring paddle. In the work, the material screening disc can be used for filtering, meanwhile, the material screening hole has the functions of filtering waste materials and guiding materials, so that the work efficiency is improved and the operation is facilitated.

Description

Technical Field

[0001] This invention relates to the field of pyridine base purification technology, specifically to intelligent separation and purification equipment and processes for the synthesis of pyridine base mixtures. Background Technology

[0002] Pyridine bases refer to pyridine and its homologues. They are nitrogen-containing monocyclic (heterocyclic) compounds. Pyridine bases, along with quinoline compounds, are collectively known as tar bases. They are alkaline substances found in high-temperature coal tar processing products. The main types of pyridine bases include pyridine, methylpyridine, dimethylpyridine, and trimethylpyridine. Pyridine bases are found in the light oil fraction of coal tar, the phenolic oil fraction, and in the residual ammonia water produced from coke oven gas purification and the mother liquor from the semi-direct fermentation of ammonium sulfate. Existing purification equipment is used during the production of pyridine bases.

[0003] In the prior art, such as the Chinese patent with publication number CN211771010U, this patent designs a door panel inside the door frame and a spring and a locking plate inside the second groove. This avoids the protective door on the front surface of the purification device from being easily damaged by collision during use. After long-term damage, it is inconvenient to replace. The pull rod can be pulled inside the first groove, so that the spring undergoes elastic deformation inside the second groove, which disengages the locking plate from the slot. The door panel and door frame can then be disassembled and the door panel replaced. After replacement, it can be used stably.

[0004] However, among the aforementioned technologies, the existing purification devices have simple structures, and the mixing and separation effects are generally poor, affecting the quality of work.

[0005] To address these shortcomings, it is essential to design intelligent separation and purification equipment and processes for the synthesis of pyridine base mixtures. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent separation and purification device and process for the synthesis of pyridine base mixtures, which can solve the problems of simple structure, mediocre mixing and separation effect, and poor work quality of existing purification devices.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an intelligent separation and purification device for the synthesis of pyridine base mixtures, comprising:

[0008] The equipment housing has a vacuum chamber for adjusting air pressure at its upper end, and a vacuum pump and an air pressure valve are installed inside the vacuum chamber.

[0009] It also includes:

[0010] A fixed cover plate, used to seal the equipment housing, is located at the upper end of the vacuum machine housing. A feed inlet for feeding is provided above the fixed cover plate, and a servo motor is installed at the upper end of the fixed cover plate, and a telescopic shaft is installed at the lower end of the servo motor.

[0011] A receiving base, used to collect the purified pyridine base mixture, is located at the lower end of the equipment housing, and a sliding groove is provided between the receiving base and the equipment housing;

[0012] The lifting mixing plate, used for mixing pyridine base mixture raw materials, is located inside the equipment housing. An electric cylinder is installed at the lower end of the lifting mixing plate. The lifting mixing plate moves up and down, causing the internal raw materials to move and mix evenly. A stirring paddle is installed inside the lifting mixing plate.

[0013] An adjusting disc, used to adjust the position of the raw material purification, is located inside the sliding groove. A gear disc is welded to the outer surface of the adjusting disc. A catalyst tube is installed at the upper inside of the adjusting disc. A one-way valve is provided on the outer surface of the catalyst tube. The catalyst tube is used to introduce the oxidation catalyst.

[0014] Preferably, a heater is installed on the outer surface of the equipment housing, and a fixed base is installed at the lower end of the equipment housing, with a support frame welded to the lower end of the fixed base.

[0015] Preferably, the fixed cover plate is sealed to the vacuum machine housing by a sealing ring, the servo motor is connected to the fixed cover plate by fixing screws, and the motor shaft of the servo motor is fixedly connected to the upper end of the telescopic shaft by a coupling. The telescopic shaft is provided with a telescopic sleeve inside, and the telescopic sleeve is slidably connected to the telescopic shaft. The lower end of the telescopic shaft is engaged with the inside of the stirring paddle by a flange.

[0016] Preferably, the receiving base is equipped with three discharge pipes on its exterior, and the lower end of the receiving base is provided with three integrally formed discharge ports, which are respectively connected to the three discharge pipes. The upper surface of the adjusting plate is provided with three integrally formed through-holes, and the lower end of each through-hole is provided with an integrally formed feeding port, which is respectively connected to the three discharge ports.

[0017] Preferably, a speed-regulating motor is installed on one side of the lower end of the receiving base, the upper end of the receiving base is connected to the gear disk through a transmission gear, the adjusting disk is rotatably connected to the receiving base through a sliding groove, a sealed bearing is installed in the middle of the inside of the receiving base, and the electric cylinder is slidably connected to the receiving base through the sealed bearing.

[0018] Preferably, the lifting mixing disc has an integrally formed feeding hopper inside, and a screening disc is provided on the lower end face of the lifting mixing disc. The screening disc has screening holes inside. The stirring paddle is rotatably connected to the screening disc through a bearing seat. A temperature detection plate is provided on the outer surface of the stirring paddle. The temperature detection plate is used to detect the reaction temperature of the mixture on the outer surface of the screening disc. A pressure detection plate is provided at the lower end of the temperature detection plate. The pressure detection plate is used to detect the separation degree of the mixture on the surface of the screening disc. The pressure detection plate includes a pressure sensor and an anti-slip pad.

[0019] Preferably, the lower end face of the regulating disc is provided with an integrally formed material dispensing disc, the lower end of the material dispensing disc is provided with an integrally formed purification receiving disc, a booster pump is installed on the outer side of the regulating disc, a connecting hose is installed between the booster pump and the catalyst tube, the connecting hose passes through the regulating disc and is sealed to the regulating disc, and an integrally formed annular tube is provided in the middle of the catalyst tube.

[0020] The process for intelligent separation and purification equipment used in the synthesis of pyridine base mixtures includes the following steps:

[0021] Step 1: The pyridine base mixture is introduced into the equipment housing through the feed port. The air pressure inside the equipment housing is adjusted by the vacuum pump inside the vacuum machine housing, and the adjustment is carried out in conjunction with the air pressure valve.

[0022] Step 2: After the pyridine base mixture falls above the lifting mixing plate, xylene is introduced into the equipment housing. The heater is turned on to heat the mixture. The servo motor drives the telescopic shaft and the stirring paddle to rotate, so that the raw materials are mixed at high temperature.

[0023] Step 3: During the rotation of the stirring paddle, the reaction temperature of the mixture on the outer surface of the sieve plate is detected by the temperature detection plate on the surface of the stirring paddle. The temperature of the heater is adjusted according to the detected temperature to achieve intelligent regulation.

[0024] Step 4: During the rotation of the stirring paddle, the pressure detection plate at the lower end scrapes against the upper surface of the sieve tray. The separation degree of the mixture is detected by the pressure sensor. The detection work is carried out based on the uniformity of the mixing effect. At the same time, the speed of the servo motor is adjusted to carry out intelligent mixing work.

[0025] Step 5: Introduce water into the equipment housing to carry out a hydrolysis reaction, separating the aqueous phase from the xylene organic phase. Filter the mixture through the sieve holes of the sieve disc. The separated solids are located above the sieve disc and are heated again at high temperature. The continuously extending and retracting electric cylinder drives the lifting and lowering of the mixing disc. The lifting and lowering of the mixing disc allows the solid phase on the surface of the sieve disc to move fully, allowing the mixture to be heated a second time. After being heated and concentrated, it falls below the sieve disc.

[0026] Step Six: Introduce the oxidation catalyst through a booster pump. The catalyst enters the equipment housing through a one-way valve on the surface of the catalyst tube and oxidizes with the concentrated aminopyridine mixture to precipitate purified pyridine base.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. This intelligent separation and purification equipment and process for the synthesis of pyridine base mixtures involves introducing the pyridine base mixture into the equipment housing through the inlet. The internal air pressure is adjusted by a vacuum pump inside the housing, along with a pressure valve. After the pyridine base mixture falls above the lifting mixing plate, xylene is introduced into the housing. The heater is then turned on to heat the mixture. A servo motor drives the telescopic shaft and stirring paddle to rotate, enabling high-temperature mixing of the raw materials. Efficient mixing is achieved through the stirring paddle at the top of the lifting mixing plate. During operation, filtration is performed through a sieve plate, which also filters waste and guides the material, improving efficiency and simplifying operation.

[0029] 2. This intelligent separation and purification equipment and process for the synthesis of pyridine base mixtures involves introducing water into the equipment shell for hydrolysis, separating the aqueous phase from the xylene organic phase. The separated solid is filtered through the sieve holes of the sieve plate and is located above the sieve plate. It is then heated again at high temperature. A continuously extending and retracting electric cylinder drives the lifting and lowering of the mixing plate. The lifting and lowering of the mixing plate allows the solid phase on the surface of the sieve plate to move fully, enabling the mixture to be heated a second time. After being heated and concentrated, the mixture falls below the sieve plate and is introduced into the equipment shell through a booster pump. The catalyst enters the equipment shell through a one-way valve on the surface of the catalyst tube and oxidizes the concentrated aminopyridine mixture, thereby precipitating purified pyridine base. The one-way valves evenly distributed on the outside of the catalyst tube can adapt to different separation and purification positions of the mixture, improving the separation and purification effect.

[0030] 3. This intelligent separation and purification equipment and process for the synthesis of pyridine base mixtures can detect the reaction temperature of the mixture on the outer surface of the sieve tray through a temperature detection plate on the surface of the stirring paddle. The temperature of the heater is adjusted according to the detected temperature to achieve intelligent regulation. During the rotation of the stirring paddle, the pressure detection plate at the lower end scrapes against the upper surface of the sieve tray. The separation degree of the mixture is detected by a pressure sensor. The uniformity of the mixing is detected, and the speed of the servo motor is adjusted simultaneously to carry out intelligent mixing, thereby improving the working efficiency of the equipment and improving product quality. Attached Figure Description

[0031] Figure 1 This is an isometric view of the front view of the present invention;

[0032] Figure 2 This is an isometric view of the housing of the device of the present invention from top view;

[0033] Figure 3 This is an isometric view of the lifting mixing tray and receiving base of the present invention from the front.

[0034] Figure 4 This is a top-view isometric view of the lifting mixing tray and the receiving base of the present invention;

[0035] Figure 5 This is an axonometric view of the front view of the adjustment disc of the present invention;

[0036] Figure 6 This is an isometric view of the adjustment disc of the present invention from top view;

[0037] Figure 7 This is a diagram showing the internal structure of the adjusting disc and the receiving base of the present invention;

[0038] Figure 8 For the present invention Figure 4 A magnified view of a portion of area A in the middle.

[0039] In the diagram: 1. Equipment housing; 101. Heater; 102. Fixed base; 103. Support frame; 2. Vacuum machine housing; 3. Fixed cover plate; 301. Servo motor; 302. Telescopic shaft; 4. Material receiving base; 401. Discharge pipe; 402. Speed ​​regulating motor; 403. Sliding groove; 404. Sealed bearing; 405. Discharge port; 5. Lifting mixing plate; 501. Electric cylinder; 502. Screening plate; 503. Screening hole; 504. Stirring paddle; 5041. Temperature detection plate; 5042. Pressure detection plate; 505. Bearing seat; 6. Adjusting plate; 601. Gear disc; 602. Distributing and unloading plate; 603. Purification receiving plate; 604. Through port; 605. Discharge port; 7. Catalyst pipe; 701. One-way valve; 702. Connecting hose; 703. Booster pump; 704. Annular pipe. Detailed Implementation

[0040] 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.

[0041] To address the technical problem that existing purification devices have simple structures but generally poor mixing and separation effects, please refer to [the relevant documentation / reference]. Figure 1 - Figure 4 The following technical solutions are provided:

[0042] Intelligent separation and purification equipment for the synthesis of pyridine base mixtures includes:

[0043] The equipment housing 1 has a vacuum machine housing 2 for adjusting air pressure at its upper end. The vacuum machine housing 2 is equipped with a vacuum pump and an air pressure valve.

[0044] It also includes:

[0045] The fixed cover plate 3 is used to seal the equipment housing 1. The fixed cover plate 3 is located at the upper end of the vacuum machine housing 2. A feed port for feeding is provided above the fixed cover plate 3. A servo motor 301 is installed at the upper end of the fixed cover plate 3. A telescopic shaft 302 is installed at the lower end of the servo motor 301.

[0046] The receiving base 4, which is used to collect the purified pyridine base mixture, is located at the lower end of the equipment housing 1. A sliding groove 403 is provided between the receiving base 4 and the equipment housing 1.

[0047] The lifting mixing plate 5 is located inside the equipment housing 1 for mixing the pyridine base mixture raw materials. An electric cylinder 501 is installed at the lower end of the lifting mixing plate 5. The lifting mixing plate 5 lifts and lowers to drive the internal raw materials to move and mix evenly. A stirring paddle 504 is installed inside the lifting mixing plate 5.

[0048] The regulating disc 6, used to adjust the position of the raw material purification, is located inside the sliding tank 403. A gear disc 601 is welded to the outer surface of the regulating disc 6. A catalyst tube 7 is installed at the upper end of the inner side of the regulating disc 6. A one-way valve 701 is provided on the outer surface of the catalyst tube 7. The catalyst tube 7 is used to introduce the oxidation catalyst.

[0049] A heater 101 is installed on the outer surface of the equipment housing 1, and a fixed base 102 is installed at the lower end of the equipment housing 1. A support frame 103 is welded to the lower end of the fixed base 102.

[0050] Specifically, during operation, the pyridine base mixture is introduced into the equipment housing 1 through the feed inlet. The air pressure inside the equipment housing 1 is adjusted by the vacuum pump inside the vacuum machine housing 2, and the pressure is regulated by the air pressure valve. After the pyridine base mixture falls above the lifting mixing plate 5, xylene is introduced into the equipment housing 1. The heater 101 is turned on to heat the mixture. The servo motor 301 drives the telescopic shaft 302 and the stirring paddle 504 to rotate, so that the raw materials are mixed at high temperature. The stirring paddle 504 at the top of the lifting mixing plate 5 can carry out efficient mixing. During operation, the material can be filtered through the sieve plate 502. At the same time, the sieve hole 503 can filter waste and guide material, improving work efficiency and facilitating operation.

[0051] To address the technical problem in existing technologies where the screening structure is prone to clogging, hindering long-term operation, please refer to [link / reference needed]. Figure 3 - Figure 7 The following technical solutions are provided:

[0052] A speed-regulating motor 402 is installed on one side of the lower end of the receiving base 4. The upper end of the receiving base 4 is connected to the gear disk 601 through a transmission gear. The adjusting disk 6 is rotatably connected to the receiving base 4 through a sliding groove 403. A sealed bearing 404 is installed in the middle of the inside of the receiving base 4. The electric cylinder 501 is slidably connected to the receiving base 4 through the sealed bearing 404.

[0053] The receiving base 4 has three discharge pipes 401 installed on its exterior, and the lower end of the receiving base 4 has three integrally formed discharge ports 405. The three discharge ports 405 are connected to the three discharge pipes 401 respectively. The upper surface of the adjusting plate 6 has three integrally formed through ports 604. The lower end of the through ports 604 has an integrally formed feeding port 605. The three feeding ports 605 are connected to the three discharge ports 405 respectively.

[0054] Specifically, the speed-regulating motor 402 can drive the regulating disc 6 to rotate, separating the discharge port 405 from the feed port 605. This allows the regulating disc 6 to be switched on and off for adjustment. The position of the regulating disc 6 can be adjusted according to different separation and purification methods to achieve different operations, preventing blockage of the inlet and outlet. Furthermore, the continuously extending and retracting electric cylinder 501, in conjunction with the vacuum pump, can keep the internal air pressure of the vacuum machine casing 2 stable, and improve the movement and positioning of the lifting mixing disc 5, adapting to different operations and improving work efficiency.

[0055] To address the technical problems of mediocre mixing efficiency and poor intelligence in existing technologies, please refer to [link / reference needed]. Figure 2 - Figure 4 , Figure 8 The following technical solutions are provided:

[0056] The fixed cover plate 3 is sealed to the vacuum machine housing 2 by a sealing ring. The servo motor 301 is connected to the fixed cover plate 3 by fixing screws. The motor shaft of the servo motor 301 is fixedly connected to the upper end of the telescopic shaft 302 by a coupling. The telescopic shaft 302 is provided with a telescopic sleeve inside, and the telescopic sleeve is slidably connected to the telescopic shaft 302. The lower end of the telescopic shaft 302 is engaged with the inside of the stirring paddle 504 by a flange.

[0057] The lifting mixing plate 5 has an integrally formed feeding hopper inside, and a sieve plate 502 is provided on the lower end face of the lifting mixing plate 5. The sieve plate 502 has sieve holes 503 inside. The stirring paddle 504 is rotatably connected to the sieve plate 502 through a bearing seat 505. A temperature detection plate 5041 is provided on the outer surface of the stirring paddle 504. The temperature detection plate 5041 is used to detect the reaction temperature of the mixture on the outer surface of the sieve plate 502. A pressure detection plate 5042 is provided at the lower end of the temperature detection plate 5041. The pressure detection plate 5042 is used to detect the separation degree of the mixture on the surface of the sieve plate 502. The pressure detection plate 5042 includes a pressure sensor and an anti-slip pad.

[0058] Specifically, during the mixing process, the servo motor 301 drives the telescopic shaft 302 and the stirring paddle 504 to rotate. During the rotation of the stirring paddle 504, the temperature detection plate 5041 on the surface of the stirring paddle 504 detects the reaction temperature of the mixture on the outer surface of the sieve plate 502. Based on the detected temperature, the temperature of the heater 101 is adjusted to achieve intelligent regulation. During the rotation of the stirring paddle 504, the pressure detection plate 5042 at the lower end scrapes against the upper surface of the sieve plate 502. The separation degree of the mixture is detected by the pressure sensor. The uniformity of the mixing is detected, and the speed of the servo motor 301 is adjusted at the same time to carry out intelligent mixing and improve product quality.

[0059] To address the technical problem in existing technologies where catalyst mixing is generally ineffective, thus affecting processing efficiency, please refer to [link / reference needed]. Figure 5 - Figure 6 The following technical solutions are provided:

[0060] An integrally formed material distribution and feeding plate 602 is provided on the lower end face of the regulating plate 6, and an integrally formed purification and receiving plate 603 is provided at the lower end of the material distribution and feeding plate 602. A booster pump 703 is installed on one side of the outer side of the regulating plate 6. A connecting hose 702 is installed between the booster pump 703 and the catalyst tube 7. The connecting hose 702 passes through the regulating plate 6 and is sealed to the regulating plate 6. An integrally formed annular tube 704 is provided in the middle of the catalyst tube 7.

[0061] Specifically, the oxidation catalyst is introduced through the booster pump 703, and the catalyst enters the equipment housing 1 through the one-way valve 701 on the surface of the catalyst tube 7, where it is oxidized with the concentrated aminopyridine mixture. The integrally formed annular tube 704 can maintain the structural stability of the catalyst tube 7 while improving the mixing effect of the catalyst.

[0062] Please see Figure 1 - Figure 8 The process for intelligent separation and purification equipment used in the synthesis of pyridine base mixtures includes the following steps:

[0063] Step 1: The pyridine base mixture is introduced into the equipment housing 1 through the feed port. The air pressure inside the equipment housing 1 is adjusted by the vacuum pump inside the vacuum machine housing 2, and the air pressure is adjusted in conjunction with the air pressure valve.

[0064] Step 2: After the pyridine base mixture falls above the lifting mixing plate 5, xylene is introduced into the equipment housing 1. The heater 101 is turned on to heat the mixture. The servo motor 301 drives the telescopic shaft 302 and the stirring paddle 504 to rotate, so that the raw materials are mixed at high temperature.

[0065] Step 3: During the rotation of the stirring paddle 504, the reaction temperature of the mixture on the outer surface of the sieve plate 502 is detected by the temperature detection plate 5041 on the surface of the stirring paddle 504. The temperature of the heater 101 is adjusted according to the detected temperature to realize intelligent adjustment.

[0066] Step 4: During the rotation of the stirring paddle 504, the pressure detection plate 5042 at the lower end scrapes against the upper surface of the sieve plate 502. The separation degree of the mixture is detected by the pressure sensor. The detection work is carried out according to the uniformity of the mixing. At the same time, the speed of the servo motor 301 is adjusted to carry out intelligent mixing work.

[0067] Step 5: Introduce water into the interior of the equipment housing 1 to carry out a hydrolysis reaction, separating the aqueous phase from the xylene organic phase. The water is then filtered through the sieve holes 503 of the sieve plate 502. The separated solids are located above the sieve plate 502 and are heated again at high temperature. The continuously extending and retracting electric cylinder 501 drives the lifting mixing plate 5 to rise and fall. The rising and falling of the lifting mixing plate 5 allows the solid phase on the surface of the sieve plate 502 to move fully, allowing the mixture to be heated a second time. After being heated and concentrated, the mixture falls below the sieve plate 502.

[0068] Step 6: The oxidation catalyst is introduced through the booster pump 703 and then through the one-way valve 701 on the surface of the catalyst tube 7 to allow the catalyst to enter the interior of the equipment housing 1 and oxidize with the concentrated aminopyridine mixture to precipitate purified pyridine base.

[0069] Working Principle: The pyridine base mixture is introduced into the equipment housing 1 through the feed inlet. The air pressure inside the equipment housing 1 is adjusted by the vacuum pump inside the vacuum machine housing 2, and the pressure is regulated by the air pressure valve. After the pyridine base mixture falls above the lifting mixing plate 5, xylene is introduced into the equipment housing 1. The heater 101 is turned on to heat the mixture. The servo motor 301 drives the telescopic shaft 302 and the stirring paddle 504 to rotate, so that the raw materials are mixed at high temperature. The stirring paddle 504 at the top of the lifting mixing plate 5 can carry out efficient mixing. During operation, the material can be filtered through the sieve plate 502. At the same time, the sieve holes 503 can filter waste and guide the material. To improve work efficiency and facilitate operation, the speed-regulating motor 402 drives the adjusting disc 6 to rotate, separating the discharge port 405 from the feed port 605. This allows for the switching of the adjusting disc 6 for adjustment purposes. The position of the adjusting disc 6 can be adjusted according to different separation and purification methods to achieve different operations, preventing blockage of the inlet and outlet. Furthermore, the continuously extending and retracting electric cylinder 501, in conjunction with the vacuum pump, ensures stable air pressure inside the vacuum machine casing 2, and improves the movement and positioning of the lifting mixing disc 5, adapting to different tasks and enhancing work efficiency. During mixing, the servo motor 301 drives the telescopic shaft 302 and the stirring paddle 504 to rotate. During the rotation of the stirring paddle 504, the stirring paddle 504... The surface temperature detection plate 5041 detects the reaction temperature of the mixture on the outer surface of the sieve tray 502. Based on the detected temperature, the temperature of the heater 101 is adjusted to achieve intelligent regulation. During the rotation of the stirring paddle 504, the lower pressure detection plate 5042 scrapes against the upper surface of the sieve tray 502. The separation degree of the mixture is detected by a pressure sensor, and the uniformity of the mixing is assessed. Simultaneously, the speed of the servo motor 301 is adjusted for intelligent mixing, improving product quality. Water is introduced into the equipment housing 1 for hydrolysis, separating the aqueous phase from the xylene organic phase. The separated solids are filtered through the sieve holes 503 of the sieve tray 502. Above the sieve tray 502, high-temperature heating is applied again. The continuously extending and retracting electric cylinder 501 drives the lifting mixing tray 5 to rise and fall. The rising and falling of the lifting mixing tray 5 allows the solid phase on the surface of the sieve tray 502 to move fully, allowing the mixture to be heated a second time. After being heated and concentrated, it falls below the sieve tray 502 and is introduced into the oxidation catalyst through the booster pump 703. Through the one-way valve 701 on the surface of the catalyst tube 7, the catalyst enters the equipment housing 1 and oxidizes with the concentrated aminopyridine mixture. The integrally formed annular tube 704 can maintain the structural stability of the catalyst tube 7 while improving the mixing effect of the catalyst. The catalyst enters the equipment housing 1 and oxidizes with the concentrated aminopyridine mixture, thereby precipitating purified pyridine base.

[0070] 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.

[0071] 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. Intelligent separation and purification equipment for the synthesis of pyridine base mixtures, including: The equipment housing (1) has a vacuum machine housing (2) for adjusting air pressure at its upper end, and a vacuum pump and an air pressure valve are provided inside the vacuum machine housing (2). Its characteristic is that it further includes: The fixed cover plate (3) is used to seal the equipment housing (1) and is located at the upper end of the vacuum machine housing (2). A feed port for feeding is provided above the fixed cover plate (3), and a servo motor (301) is installed at the upper end of the fixed cover plate (3). A telescopic shaft (302) is installed at the lower end of the servo motor (301). The receiving base (4) for collecting the purified pyridine base mixture is located at the lower end of the equipment housing (1), and a sliding groove (403) is provided between the receiving base (4) and the equipment housing (1). The lifting mixing plate (5) is located inside the equipment housing (1) for mixing pyridine base mixture raw materials. An electric cylinder (501) is installed at the lower end of the lifting mixing plate (5). The lifting mixing plate (5) moves up and down to drive the internal raw materials to move and mix evenly. A stirring paddle (504) is installed inside the lifting mixing plate (5). The lifting mixing plate (5) is provided with an integrally formed feeding hopper inside, and a sieve plate (502) is provided on the lower end face of the lifting mixing plate (5). The sieve plate (502) is provided with a sieve hole (503) inside. The stirring paddle (504) is rotatably connected to the sieve plate (502) through a bearing seat (505). The regulating disc (6) is used to adjust the position of the raw material purification. The regulating disc (6) is located inside the sliding groove (403). A gear disc (601) is welded to the outer surface of the regulating disc (6). A catalyst tube (7) is installed at the upper end of the inner side of the regulating disc (6). A one-way valve (701) is provided on the outer surface of the catalyst tube (7). The catalyst tube (7) is used to introduce the oxidation catalyst. A heater (101) is installed on the outer surface of the device housing (1). The lower end face of the regulating disc (6) is provided with an integrally formed material feeding disc (602), and the lower end of the material feeding disc (602) is provided with an integrally formed purification receiving disc (603). A booster pump (703) is installed on the outer side of the regulating disc (6), and a connecting hose (702) is installed between the booster pump (703) and the catalyst tube (7). The connecting hose (702) passes through the regulating disc (6) and is sealed to the regulating disc (6). An integrally formed annular tube (704) is provided in the middle of the catalyst tube (7). The receiving base (4) is equipped with three discharge pipes (401) on its exterior, and the lower end of the receiving base (4) is provided with three integrally formed discharge ports (405). The three discharge ports (405) are respectively connected to the three discharge pipes (401). The upper surface of the adjusting plate (6) is provided with three integrally formed through ports (604). The lower end of the through ports (604) is provided with an integrally formed feeding port (605). The three feeding ports (605) are respectively connected to the three discharge ports (405). A speed-regulating motor (402) is installed on one side of the lower end of the receiving base (4). The upper end of the receiving base (4) is connected to the gear disk (601) through a transmission gear. The adjusting disk (6) is rotatably connected to the receiving base (4) through a sliding groove (403). A sealed bearing (404) is installed in the middle of the inside of the receiving base (4). The electric cylinder (501) is slidably connected to the receiving base (4) through the sealed bearing (404).

2. The intelligent separation and purification device for the synthesis of pyridine base mixtures according to claim 1, characterized in that: A fixed base (102) is installed at the lower end of the equipment housing (1), and a support frame (103) is welded to the lower end of the fixed base (102).

3. The intelligent separation and purification device for the synthesis of pyridine base mixtures according to claim 2, characterized in that: The fixed cover plate (3) is sealed to the vacuum machine housing (2) by a sealing ring. The servo motor (301) is connected to the fixed cover plate (3) by a fixing screw. The motor shaft of the servo motor (301) is fixedly connected to the upper end of the telescopic shaft (302) by a coupling. The telescopic shaft (302) is provided with a telescopic sleeve inside, and the telescopic sleeve is slidably connected to the telescopic shaft (302). The lower end of the telescopic shaft (302) is engaged with the inside of the stirring paddle (504) by a flange.

4. The intelligent separation and purification device for the synthesis of pyridine base mixtures according to claim 3, characterized in that: A temperature detection plate (5041) is provided on the outer surface of the stirring paddle (504). The temperature detection plate (5041) is used to detect the reaction temperature of the mixture on the outer surface of the sieve tray (502). A pressure detection plate (5042) is provided at the lower end of the temperature detection plate (5041). The pressure detection plate (5042) is used to detect the separation degree of the mixture on the surface of the sieve tray (502). The pressure detection plate (5042) includes a pressure sensor and an anti-slip pad.

5. The process of the intelligent separation and purification equipment for the synthesis of pyridine base mixtures according to claim 4, characterized in that, Includes the following steps: Step 1: The pyridine base mixture is introduced into the equipment housing (1) through the feed port. The air pressure inside the equipment housing (1) is adjusted by the vacuum pump inside the vacuum machine housing (2) and the air pressure valve is used for adjustment. Step 2: After the pyridine base mixture falls above the lifting mixing plate (5), xylene is introduced into the equipment housing (1), the heater (101) is turned on, and the mixture is heated by the heater (101). The servo motor (301) drives the telescopic shaft (302) and the stirring paddle (504) to rotate, so that the raw materials are mixed at high temperature. Step 3: During the rotation of the stirring paddle (504), the reaction temperature of the mixture on the outer surface of the sieve plate (502) is detected by the temperature detection plate (5041) on the surface of the stirring paddle (504). The temperature of the heater (101) is adjusted according to the detected temperature to realize intelligent adjustment. Step 4: During the rotation of the stirring paddle (504), the pressure detection plate (5042) at the lower end scrapes against the upper surface of the sieve plate (502). The separation degree of the mixture is detected by the pressure sensor. The detection work is carried out according to the uniformity of the mixing. At the same time, the speed of the servo motor (301) is adjusted to carry out intelligent mixing work. Step 5: Introduce water into the equipment housing (1) for hydrolysis reaction, separate the aqueous phase from the xylene organic phase, and filter it through the sieve hole (503) of the sieve plate (502). The separated solid is located above the sieve plate (502) and is heated at high temperature again. The electric cylinder (501) is continuously extended and retracted, driving the lifting mixing plate (5) to rise and fall. The rising and falling of the lifting mixing plate (5) makes the solid phase on the surface of the sieve plate (502) fully active, so that the mixture is heated a second time. After heating and concentration, it falls below the sieve plate (502). Step 6: The oxidation catalyst is introduced through the booster pump (703) and the catalyst enters the equipment housing (1) through the one-way valve (701) on the surface of the catalyst tube (7) to oxidize with the concentrated aminopyridine mixture, thereby precipitating the purified pyridine base.

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