A high-efficiency synthesis device of triphenyl phosphite and a method of using the same

Abstract

The application relates to the technical field of triphenyl phosphite synthesis, in particular to a high-efficiency triphenyl phosphite synthesis device and a use method thereof, which comprises a phenol storage tank, a transmission assembly is installed at the upper end of the phenol storage tank, a feeding shell is installed in the middle of the transmission assembly, a driving motor is installed on one side of the transmission assembly, a driving gear is fixedly connected to the top end of the main shaft of the driving motor, a material scattering assembly is installed at the bottom end of the feeding shell, a speed change assembly is installed on one side of the material scattering assembly, and a stirring assembly is installed in the middle of the lower end of the material scattering assembly; the material scattering assembly comprises a material scattering shell, circular holes are installed on the lower ends of the two sides of the material scattering shell, a limiting groove is installed at the bottom end in the material scattering shell, and a quantitative distribution assembly is installed in the limiting groove; the quantitative distribution assembly comprises a distribution wheel which is annular and has distribution cavities which are equally spaced on the outer side. In the application, aniline is put into the bottom of the tank body in a scattering mode for heating, phenol can be laid on the bottom of the tank body, and the problem that the heating efficiency is affected by the stacking of aniline can be effectively avoided.

Description

Technical Field

[0001] This invention relates to a highly efficient apparatus for the synthesis of triphenyl phosphite and its method of use, belonging to the field of triphenyl phosphite synthesis technology. Background Technology

[0002] The triphenyl phosphite synthesis unit is a chemical equipment used for the continuous production of triphenyl phosphite. It mainly consists of a raw material storage tank, a metering pump, a microchannel reactor (or a high-pressure atomizing reactor), a temperature control system, and a product collection unit.

[0003] Its core working principle is to rapidly mix and react phenol and phosphorus trichloride in a microchannel (or react after being atomized into micron-sized droplets under high pressure). By precisely controlling the temperature gradient (usually 50°C→70°C→90°C in stages) and residence time (20 seconds to several minutes), efficient mass and heat transfer is achieved, resulting in a product yield of 88-91% and a purity of over 99%. Compared with traditional batch reactors, it has the advantages of high capacity, low energy consumption, good safety, and easy scale-up.

[0004] In the aniline raw material storage tank, the aniline needs to be heated to about 45°C before being fed in, and then fed in by a peristaltic pump. If the aniline inside the raw material storage tank cannot be completely heated to a molten state, it will affect the operation of the peristaltic pump and the synthesis efficiency of triphenyl phosphite. Therefore, it is urgent to improve a high-efficiency synthesis device for triphenyl phosphite and its usage method to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide an efficient synthesis apparatus for triphenyl phosphite and its usage method, in order to solve the problem that in aniline raw material storage tanks, aniline needs to be heated to about 45°C before being fed in, and then fed in by a peristaltic pump. If the aniline inside the raw material storage tank cannot be completely heated to a molten state, it will affect the operation of the peristaltic pump and the synthesis efficiency of triphenyl phosphite.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A highly efficient synthesis apparatus for triphenyl phosphite and its method of use are disclosed. The apparatus includes a phenol storage tank, a transmission assembly mounted on the upper end of the phenol storage tank, a feeding shell mounted in the middle of the transmission assembly, a drive motor mounted on one side of the transmission assembly, a drive gear fixedly connected to the top of the drive motor's main shaft, a dispensing assembly mounted on the bottom end of the feeding shell, a speed-changing assembly mounted on one side of the dispensing assembly, and a stirring assembly mounted in the middle of the lower end of the dispensing assembly. The dispensing assembly includes a dispensing shell with circular holes on both sides of its lower end. A limiting groove is installed at the bottom of the dispensing shell, and a quantitative dispensing assembly is installed inside the limiting groove. The quantitative dispensing assembly includes a dispensing wheel with dispensing chambers equidistantly spaced in an annular shape on its outer side. A first rotating shaft and a second rotating shaft are fixedly connected to both ends of the dispensing wheel, respectively. The second rotating shaft penetrates the dispensing shell and is connected to the speed-changing assembly.

[0008] Furthermore, the phenol storage tank includes a tank body, an annular groove is formed on the inner side of the upper end of the tank body, and a fixed toothed plate is fixedly connected inside the upper end of the tank body. The fixed toothed plate includes an annular plate, and the bottom end of the annular plate is provided with annularly distributed toothed grooves at equal intervals.

[0009] Furthermore, the transmission assembly includes a top gear plate, a first through hole for positioning the upper material shell is provided in the middle of the top gear plate, a sealing cover is fixedly connected to the lower end of the top gear plate, a second through hole with a vertical projection equal to the size of the first through hole is provided in the middle of the sealing cover, and a plurality of ball bearings are rotatably connected at equal intervals around the sealing cover.

[0010] Furthermore, the ball bearing is rotatably connected to the tank body via an annular groove, and the sealing cover is installed on the inner side of the upper end of the tank body. The sealing cover and the tank body are rotatably connected via a sealing ring, and the top gear plate meshes with the drive gear.

[0011] Furthermore, the stirring assembly includes a stirring rod, a connector is welded and fixed to the upper end of the stirring rod, two sets of stirring blades are fixedly connected to the bottom end of the stirring rod, the connector is fixedly connected to the material spreading shell, the lateral projection of the connector is U-shaped, and the middle of the connector is raised.

[0012] Furthermore, the transmission assembly includes a first conical shaft, an inclined transmission wheel is mounted on the upper end of the first conical shaft, a second conical shaft is mounted on the upper end of the transmission wheel, the transmission wheel is fixedly connected to the outside of the moving end of the electric telescopic rod, the fixed end of the electric telescopic rod is fixedly connected to the positioning bend plate, and a bottom gear is fixedly connected to one end of the second conical shaft in the material spreading assembly.

[0013] Furthermore, the end of the second conical shaft away from the bottom gear is rotatably connected to the spreading shell, and the bottom gear meshes with the annular distributed tooth groove.

[0014] Furthermore, the positioning bend plate is L-shaped, and the bottom end of the positioning bend plate is fixedly connected to the material spreading shell.

[0015] Furthermore, the upper end of the feeding shell is fed through a sealed pipe, and the feeding shell and the sealed pipe are rotatably connected. A peristaltic pump is installed on the lower side of one end of the phenol storage tank.

[0016] Furthermore, it includes the following steps:

[0017] Step 1: Phenol is injected into the upper material shell through a sealed pipe. Then, the heating components and drive motor inside the tank are powered on. The heating components inside the tank are used to heat the phenol entering the phenol tank, and the drive motor is used to provide power for the rotation of the drive gear.

[0018] Step 2: The drive gear rotates under the drive motor, which in turn drives the top gear plate to rotate, thereby driving the entire transmission assembly and the material spreading assembly to rotate.

[0019] During the rotation of the spreading assembly, the bottom gear rotates under the interference of the fixed tooth plate, and then drives the distribution wheel to rotate through the speed change assembly. The rotation of the distribution wheel evenly spreads the phenol that has entered the spreading shell into the tank.

[0020] Step 3: During the transmission process, the transmission assembly adjusts the position of the transmission wheel by controlling the extension and retraction of the electric telescopic rod, thereby adjusting the transmission ratio to achieve adjustment of the rotation cycle of the distribution wheel and meet the material feeding requirements at different speeds.

[0021] Step 4: During this process, the phenol that has entered the tank and been heated is transported to the required location by a peristaltic pump. At the same time, the stirring component, driven by the dispensing component, continuously stirs the phenol at the bottom of the tank to improve the uniformity of phenol heating.

[0022] This invention has at least the following beneficial effects:

[0023] 1. In this invention, by using a feeding assembly, an aniline storage tank, and a stirring assembly, aniline is fed to the bottom of the tank for heating by sprinkling. This allows phenol to be spread evenly at the bottom of the tank, effectively avoiding the problem of aniline accumulation and affecting heating efficiency. At the same time, the aniline is stirred during the heating process, further improving the heating efficiency and effect, thereby effectively improving the synthesis efficiency of triphenyl phosphite.

[0024] 2. In this invention, by using a transmission component and a drive motor located outside the tank to drive the internal structure of the tank, the problem of cumbersome and unsafe subsequent maintenance (aniline is a toxic substance) can be effectively avoided by installing the drive device inside the tank, while also facilitating subsequent maintenance.

[0025] 3. In this invention, the speed-changing component allows for adjustment of the rotation speed of the distribution wheel during actual driving, adapting to different heating scenarios. It also allows for adjustment of the aniline dispensing speed, making it suitable for scenarios with different processing efficiencies, thus further expanding the application range of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is an exploded view of the entire invention;

[0028] Figure 3 This is an enlarged structural diagram of point A in section 2 of the present invention;

[0029] Figure 4 This is a schematic diagram of the transmission component structure of the present invention.

[0030] Figure 5 This is a schematic diagram of the fixed toothed plate structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the installation position of the material spreading shell of the present invention;

[0032] Figure 7 This is a cross-sectional view of the material spreading shell of the present invention;

[0033] Figure 8 This is a schematic diagram of the stirring assembly structure of the present invention;

[0034] Figure 9 This is a schematic diagram of the transmission component structure of the present invention.

[0035] In the diagram, 1 is the phenol storage tank; 11 is the tank body; 12 is the annular groove; 13 is the fixed toothed plate; 131 is the annular plate; and 132 is the annular distributed toothed groove.

[0036] 2. Loading the shell;

[0037] 3. Transmission assembly; 31. Top gear plate; 32. First perforation; 33. Sealing cover; 34. Ball bearing; 35. Second perforation;

[0038] 4. Peristaltic pump; 5. Drive motor; 6. Drive gear;

[0039] 7. Spreading assembly; 71. Spreading shell; 72. Circular hole; 73. Limiting groove; 74. Quantitative dispensing assembly; 741. Dispensing wheel; 742. First rotating shaft; 743. Second rotating shaft;

[0040] 8. Stirring assembly; 81. Stirring rod; 82. Connecting parts; 83. Stirring blades;

[0041] 9. Transmission assembly; 91. First tapered shaft; 92. Second tapered shaft; 93. Bottom gear; 94. Positioning bend plate; 95. Transmission wheel; 96. Electric telescopic rod. Detailed Implementation

[0042] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0043] like Figures 1-9 As shown, this embodiment provides a high-efficiency synthesis apparatus for triphenyl phosphite, including a phenol storage tank 1. A transmission assembly 3 is installed at the upper end of the phenol storage tank 1. A feeding shell 2 is installed in the middle of the transmission assembly 3. A drive motor 5 is installed on one side of the transmission assembly 3. A drive gear 6 is fixedly connected to the top of the main shaft of the drive motor 5. A feeding assembly 7 is installed at the bottom of the feeding shell 2. A speed change assembly 9 is installed on one side of the feeding assembly 7. A stirring assembly 8 is installed in the middle of the lower end of the feeding assembly 7. The feeding assembly 7 includes a feeding shell 71. Circular holes 72 are installed on both sides of the lower end of the feeding shell 71. A limiting groove 73 is installed at the bottom of the inner part of the feeding shell 71. A quantitative distribution assembly 74 is installed inside the limiting groove 73. The quantitative distribution assembly 74 includes a distribution wheel 741 with distribution chambers equidistantly arranged in an annular shape on the outer side. A first rotating shaft 742 and a second rotating shaft 743 are fixedly connected to both ends of the distribution wheel 741, respectively. The second rotating shaft 743 passes through the feeding shell 71 and is connected to the speed change assembly 9.

[0044] As a further embodiment of the present invention, the phenol storage tank 1 includes a tank body 11, an annular groove 12 is provided on the inner side of the upper end of the tank body 11, and a fixed toothed plate 13 is fixedly connected to the inner side of the upper end of the tank body 11. The fixed toothed plate 13 includes an annular plate 131, and annularly distributed toothed grooves 132 are provided at equal intervals at the bottom end of the annular plate 131. Through the above arrangement, interference can be made during the rotation of the bottom gear 93, causing it to rotate, and the sealing cover 33 can be positioned at the same time, further improving the stability of the sealing cover 33 during the rotation process.

[0045] As a further embodiment of the present invention, the transmission component 3 includes a top gear plate 31, a first through hole 32 for positioning the feed shell 2 is provided in the middle of the top gear plate 31, a sealing cover 33 is fixedly connected to the lower end of the top gear plate 31, a second through hole 35 with a vertical projection equal to the size of the first through hole 32 is provided in the middle of the sealing cover 33, and a plurality of ball bearings 34 are rotatably connected at equal intervals around the sealing cover 33. With the above configuration, in actual application, the feed shell 2 can be positioned, the upper end of the phenol storage tank 1 can be sealed, and stable transmission can be achieved.

[0046] As a further embodiment of the present invention, the ball bearing 34 is rotatably connected to the tank body 11 through the annular groove 12, and the sealing cover 33 is installed on the inner side of the upper end of the tank body 11. The sealing cover 33 and the tank body 11 are rotatably connected by a sealing ring. The top gear 31 meshes with the drive gear 6. With the above arrangement, the stability of the sealing cover 33 during rotation can be further improved, and the sealing effect between the sealing cover 33 and the tank body 11 can be guaranteed.

[0047] As a further embodiment of the present invention, the stirring assembly 8 includes a stirring rod 81, a connector 82 is welded and fixed to the upper end of the stirring rod 81, two sets of stirring blades 83 are fixedly connected to the bottom end of the stirring rod 81, the connector 82 is fixedly connected to the material feeding shell 71, the transverse projection of the connector 82 is U-shaped, and the middle of the connector 82 is raised. With the above configuration, the aniline at the bottom of the tank 11 can be stirred, further improving the uniformity of aniline heating.

[0048] As a further embodiment of the present invention, the speed-changing assembly 9 includes a first conical shaft 91, an inclined transmission wheel 95 mounted on the upper end of the first conical shaft 91, a second conical shaft 92 mounted on the upper end of the transmission wheel 95, the transmission wheel 95 being fixedly connected to the outside of the moving end of the electric telescopic rod 96, the fixed end of the electric telescopic rod 96 being fixedly connected to the positioning curved plate 94, and a bottom gear 93 being fixedly connected to one end of the second conical shaft 92 in accordance with the material spreading assembly 7. Through the above arrangement, the rotation speed of the distribution wheel 741 can be adjusted (it should be noted that the first conical shaft 91, the second conical shaft 93 and the transmission wheel 95 are transmitted through friction).

[0049] As a further embodiment of the present invention, the end of the second conical shaft 92 away from the bottom gear 93 is rotatably connected to the spreading shell 71, and the bottom gear 93 meshes with the annular distributed tooth groove 132. Through the above arrangement, the overall stability of the device during operation can be further improved.

[0050] As a further embodiment of the present invention, the positioning bend plate 94 is L-shaped, and the bottom end of the positioning bend plate 94 is fixedly connected to the material spreading shell 71. Through the positioning bend plate 94 configured above, the electric telescopic rod 96 can be stably limited and fixed.

[0051] As a further embodiment of the present invention, the upper end of the feeding shell 2 is fed through a sealed pipe, and the feeding shell 2 and the sealed pipe are rotatably connected. A peristaltic pump 4 is installed on the lower side of one end of the phenol storage tank 1. With the above settings, it is possible to effectively prevent aniline from being spilled into the air during the feeding process.

[0052] like Figures 1-9 As shown in this embodiment, the principle of using the efficient synthesis apparatus for triphenyl phosphite is as follows:

[0053] Includes the following steps:

[0054] Step 1: Phenol is injected into the upper material shell 2 through a sealed pipe. Then, the heating components on the inner wall of the tank 11 and the drive motor 5 are powered on. The heating components inside the tank 11 are used to heat the phenol that enters the phenol tank 1, and the drive motor 5 is used to provide power for the rotation of the drive gear 6.

[0055] Step 2: Driven by the drive motor 5, the drive gear 6 rotates and drives the top gear plate 31 to rotate, thereby driving the entire transmission assembly 3 and the material spreading assembly 7 to rotate.

[0056] During the rotation of the spreading assembly 7, the bottom gear 93 rotates under the interference of the fixed tooth plate 13, and then drives the distribution wheel 741 to rotate through the speed change assembly 9. The rotation of the distribution wheel 741 evenly spreads the phenol that has entered the spreading shell 71 into the tank 11.

[0057] Step 3: During the transmission process, the transmission assembly 9 adjusts the position of the transmission wheel 95 by controlling the extension and retraction of the electric telescopic rod 96, thereby adjusting the transmission ratio to adjust the rotation cycle of the distribution wheel 741 and meet the material feeding requirements at different speeds.

[0058] Step 4: During this process, the phenol that has entered the tank 11 and been heated is delivered to the required position by the peristaltic pump 4. At the same time, the stirring component 8, driven by the dispensing component 8, continuously stirs the phenol at the bottom of the tank 11 to improve the uniformity of phenol heating.

[0059] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0060] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0061] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A highly efficient apparatus for synthesizing triphenyl phosphite, characterized in that, The system includes a phenol storage tank (1), a transmission assembly (3) installed at the upper end of the phenol storage tank (1), a feeding shell (2) installed in the middle of the transmission assembly (3), a drive motor (5) installed on one side of the transmission assembly (3), a drive gear (6) fixedly connected to the top of the main shaft of the drive motor (5), a feeding assembly (7) installed at the bottom end of the feeding shell (2), a speed change assembly (9) installed on one side of the feeding assembly (7), and a stirring assembly (8) installed in the middle of the lower end of the feeding assembly (7). The spreading assembly (7) includes a spreading shell (71), with round holes (72) installed on both sides of the lower end of the spreading shell (71), and a limiting groove (73) installed at the bottom inside the spreading shell (71), and a quantitative dispensing assembly (74) installed inside the limiting groove (73). The quantitative distribution component (74) includes a distribution wheel (741) with distribution cavities equidistantly arranged in an annular shape on the outside. The two ends of the distribution wheel (741) are respectively fixedly connected to a first rotating shaft (742) and a second rotating shaft (743). The second rotating shaft (743) passes through the material spreading shell (71) and is connected to the speed change component (9).

2. The high-efficiency synthesis apparatus for triphenyl phosphite according to claim 1, characterized in that: The phenol storage tank (1) includes a tank body (11), an annular groove (12) is provided on the inner side of the upper end of the tank body (11), and a fixed toothed plate (13) is fixedly connected inside the upper end of the tank body (11). The fixed toothed plate (13) includes an annular plate (131), and annularly distributed toothed grooves (132) are provided at equal intervals at the bottom of the annular plate (131).

3. The high-efficiency synthesis apparatus for triphenyl phosphite according to claim 1, characterized in that: The transmission assembly (3) includes a top gear plate (31), a first through hole (32) for positioning the feed shell (2) is provided in the middle of the top gear plate (31), a sealing cover (33) is fixedly connected to the lower end of the top gear plate (31), a second through hole (35) with the same vertical projection size as the first through hole (32) is provided in the middle of the sealing cover (33), and multiple ball bearings (34) are rotatably connected at equal intervals around the sealing cover (33).

4. The high-efficiency synthesis apparatus for triphenyl phosphite according to claim 3, characterized in that: The ball (34) is rotatably connected to the tank body (11) through the annular groove (12), and the sealing cover (33) is installed on the inner side of the upper end of the tank body (11). The sealing cover (33) and the tank body (11) are rotatably connected through a sealing ring, and the top gear (31) meshes with the drive gear (6).

5. The high-efficiency synthesis apparatus for triphenyl phosphite according to claim 1, characterized in that: The stirring assembly (8) includes a stirring rod (81), a connector (82) is welded and fixed to the upper end of the stirring rod (81), two sets of stirring blades (83) are fixedly connected to the bottom end of the stirring rod (81), the connector (82) is fixedly connected to the material spreading shell (71), the horizontal projection of the connector (82) is U-shaped, and the middle of the connector (82) is raised.

6. The high-efficiency synthesis apparatus for triphenyl phosphite according to claim 1, characterized in that: The transmission assembly (9) includes a first conical shaft (91), an inclined transmission wheel (95) is installed on the upper end of the first conical shaft (91), a second conical shaft (92) is installed on the upper end of the transmission wheel (95), the transmission wheel (95) is fixedly connected to the outside of the moving end of the electric telescopic rod (96), the fixed end of the electric telescopic rod (96) is fixedly connected to the positioning bend plate (94), and the second conical shaft (92) is fixedly connected to a bottom gear (93) at one end of the material spreading assembly (7).

7. The high-efficiency synthesis apparatus for triphenyl phosphite according to claim 6, characterized in that: The end of the second conical shaft (92) away from the bottom gear (93) is rotatably connected to the spreading shell (71), and the bottom gear (93) meshes with the annular distributed tooth groove (132).

8. The high-efficiency synthesis apparatus for triphenyl phosphite according to claim 6, characterized in that: The positioning bend plate (94) is L-shaped, and the bottom end of the positioning bend plate (94) is fixedly connected to the material spreading shell (71).

9. The high-efficiency synthesis apparatus for triphenyl phosphite according to claim 1, characterized in that: The upper end of the feeding shell (2) is fed through a sealed pipe, and the feeding shell (2) and the sealed pipe are rotatably connected. A peristaltic pump (4) is installed on the lower side of one end of the phenol storage tank (1).

10. A method of using the efficient synthesis apparatus for triphenyl phosphite according to any one of claims 1-9, characterized in that: Includes the following steps: Step 1: Phenol is injected into the upper material shell (2) through the sealed pipe. Then, the heating components on the inner wall of the tank (11) and the drive motor (5) are powered on. The heating components inside the tank (11) are used to heat the phenol that enters the phenol tank (1), and the drive motor (5) is used to provide power for the rotation of the drive gear (6). Step 2: The drive gear (6) rotates under the drive of the drive motor (5), and drives the top gear plate (31) to rotate, thereby driving the entire transmission assembly (3) and the spreading assembly (7) to rotate; During the rotation of the spreading assembly (7), the bottom gear (93) rotates under the interference of the fixed tooth plate (13), and then drives the distribution wheel (741) to rotate through the speed change assembly (9). The rotation of the distribution wheel (741) will evenly spread the phenol that has entered the spreading shell (71) into the tank (11). Step 3: During the transmission process, the transmission assembly (9) adjusts the position of the transmission wheel (95) by controlling the extension and retraction of the electric telescopic rod (96), thereby adjusting the transmission ratio to achieve the adjustment of the rotation cycle of the distribution wheel (741) and realize the material feeding requirements at different speeds. Step 4: During this process, the phenol that has entered the tank (11) and been heated is transported to the required position by the peristaltic pump (4). At the same time, the stirring component (8) is driven by the dispensing component (8) to continuously stir the phenol at the bottom of the tank (11) to improve the uniformity of phenol heating.

Images