A solid phosgene refining device

Abstract

The utility model discloses a solid phosgene refining device, which relates to the technical field of solid phosgene preparation equipment, including a reaction tank, a sealing cover fixedly installed on the top of the reaction tank, a sealing valve fixedly installed on the top of the sealing cover, a material injection pipe fixedly installed on one side of the top of the sealing cover, a connecting pipe fixedly installed on the other end of the top of the sealing cover, a condensation box fixedly installed on the other end of the connecting pipe, and a discharge pipe fixedly connected to the bottom of the reaction tank. The utility model solves the problem that the inside of the reaction tank cannot be uniformly non-reactive, thereby affecting the working efficiency of the device, by the cooperation of an auxiliary disk, a connecting frame, a driving motor, a ramp plate and a stirring block, the driving motor provides power, drives the connecting frame to rotate, drives the auxiliary disk and the stirring bottom plate to rotate and stir, utilizes the stirring block and the stirring rod to rotate and stir, drives the bottom of the inner cavity of the reaction tank to rotate and stir, and facilitates the function of rapid reaction at the bottom of the reaction tank.

Description

Technical Field

[0001] The utility model relates to the technical field of solid phosgene preparation equipment, in particular to a solid phosgene refining device. Background Art

[0002] Triphosgene is also called solid phosgene, and its chemical name is bis(trichloromethyl) carbonate. Triphosgene is a white crystal with a similar smell to phosgene, a molecular weight of 296.75, a melting point of 78-81°C, a boiling point of 203-206°C, a solid density of 1.78g / cm3, and a melt density of 1.629g / cm3. It is soluble in organic solvents such as ether, tetrahydrofuran, benzene, ethane, and chloroform. Usually, dimethyl carbonate is placed in a reaction cylinder, and the preparation is completed by continuously introducing chlorine, and after the preparation is completed, it is evaporated to obtain solid phosgene. However, in the actual preparation, when chlorine is introduced into the reaction cylinder, the chlorine enters the reaction cylinder from the top, and the chlorine entering the reaction cylinder directly contacts and reacts with the dimethyl carbonate liquid surface.

[0003] In the existing technical scheme, a publication number: CN217189456U is proposed, which is a solid phosgene refining device, including: a reactor, the interior of the reactor is a hollow structure, an air inlet pipe is welded and fixed on the left side of the reactor and near the bottom end, a liquid inlet pipe is welded and fixed on the left side of the reactor and near the top end, a funnel-shaped discharge port is provided at the bottom of the reactor, an exhaust pipe is welded and fixed at the top of the reactor and near the right edge, and a fixing frame is welded and fixed on the right side of the reactor.

[0004] In order to solve the problem that after solid phosgene is prepared, residual chlorine will precipitate near the solid phosgene, and as the solid phosgene condenses, chlorine impurities will be generated on the surface of the solid phosgene, affecting the use of the solid phosgene, the prior art uses the air at the exhaust pipe to flow upward, thereby driving the air inside the reactor to flow to the collecting tank, so that the collecting tank collects the residual chlorine. At the same time, the collecting tank is filled with an organic solvent to dissolve the chlorine, thereby facilitating the collection of the chlorine. However, there may be a problem that the interior of the reactor cannot react evenly, thereby affecting the working efficiency of the device. Utility Model Content

[0005] The purpose of the utility model is to provide a solid phosgene refining device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A solid phosgene refining device comprises a reaction tank, wherein a sealing cover is fixedly installed on the top of the reaction tank, a sealing valve is fixedly installed on the top of the sealing cover, a filling pipe is fixedly installed on one side of the top of the sealing cover, a connecting pipe is fixedly installed on the other end of the top of the sealing cover, a condensation box is fixedly installed on the other end of the connecting pipe, and a discharge pipe is fixedly connected to the bottom of the reaction tank.

[0008] A connecting shaft is movably installed at the bottom of the inner cavity of the reaction tank, and a stirring mechanism is arranged at the bottom of the connecting shaft.

[0009] A movable shaft is fixedly installed inside the sealing cover, a slide rail is provided on the outer side of the movable shaft, and a pressing mechanism is movably sleeved on the outer side of the slide rail.

[0010] A further improvement of the technical solution of the utility model is that the stirring mechanism includes a stirring chassis, the bottom of the stirring chassis is fixedly connected to a connecting frame, the other end of the connecting frame is fixedly connected to an auxiliary plate, and the bottom of the connecting frame is fixedly connected to a driving motor.

[0011] By adopting the above technical solution, the stirring chassis, the connecting frame, the auxiliary plate and the driving motor cooperate with each other to achieve the function of connecting rotation, thereby facilitating the equipment to perform the function of rotating stirring.

[0012] A further improvement of the technical solution of the utility model is that a stirring block is fixedly installed on the top of the auxiliary plate, a ramp plate is movably installed on one side of the top of the auxiliary plate, and the other side of the ramp plate is fixedly installed on the inner wall of the reaction tank.

[0013] By adopting the above technical solution, the stirring block and the ramp plate cooperate with each other, and while stirring, the bottom airflow is driven to move upward along the ramp plate, which facilitates the reaction of the internal gas.

[0014] A further improvement of the technical solution of the utility model is that a support column is fixedly connected inside the connecting shaft, and the top of the support column is movably installed on the bottom of the sealing cover.

[0015] A further improvement of the technical solution of the utility model is that an evaporation plate is fixedly installed on the inner wall of the reaction tank, and evaporation holes are opened on the surface of the evaporation plate.

[0016] By adopting the above technical solution, the evaporation plate and the evaporation holes cooperate with each other to achieve the function of heat transfer and evaporation.

[0017] A further improvement of the technical solution of the utility model is that the pressing mechanism comprises a pressing top plate, the inner side of the pressing top plate is movably mounted inside the slide rail, and the outer side of the pressing top plate is movably sleeved with a sealing ring.

[0018] By adopting the above technical solution, the top plate, the slide rail and the sealing ring cooperate with each other through downward pressing, and the internal air is squeezed by sliding downward, so as to facilitate better reaction of the internal gas.

[0019] A further improvement of the technical solution of the utility model is that an assembly groove is opened on the inner side of the sealing ring, a sealing gasket is fixedly installed inside the assembly groove, a rebound column is movably installed on the outer side of the sealing ring, and a fixing block is fixedly installed on the other end of the rebound column.

[0020] By adopting the above technical solution, the sealing installation function is achieved through the cooperation between the assembly groove, the sealing gasket and the rebound column.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a solid phosgene refining device, which solves the problem that the inside of the reaction tank cannot react evenly, thereby affecting the working efficiency of the device through the cooperation of an auxiliary disk, a connecting frame, a driving motor, a ramp plate and a stirring block. The driving motor provides power to drive the connecting frame to rotate, drive the auxiliary disk and the stirring bottom plate to rotate and stir, utilize the stirring block and the stirring rod to rotate and stir, drive the bottom of the inner cavity of the reaction tank to rotate and stir, and facilitate the function of rapid reaction at the bottom of the reaction tank.

[0023] 2. The utility model provides a solid phosgene refining device, which is driven by electric power of the slide rail to drive the downward pressing top plate to move and press down, thereby reducing the internal space and achieving the function of compressing the internal air, which is beneficial to the convenient reaction of the device and improves the working efficiency of the device.

[0024] 3. The utility model provides a solid phosgene refining device, which solves the problem that the poor sealing of the reaction tank causes the gas inside the device to react slowly, thereby affecting the convenient reaction of the device, through the cooperation of the sealing ring, the rebound column, the fixing block, the assembly groove and the sealing gasket. The outer side of the downward pressing top plate is pressed on the inner side of the sealing ring, and the sealing gasket is used for sealing connection. Then, the bottom of the sealing ring cooperates with the pushing of the rebound column to use the rebound force to squeeze the sealing ring at the bottom, so that the sealing ring is conveniently connected to the downward pressing top plate, thereby increasing the sealing function and facilitating the convenient reaction of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 This is a schematic diagram of the reaction tank structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the connecting shaft structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the sealing cover structure of the utility model;

[0029] Figure 5 This is a schematic diagram of the sealing ring structure of the utility model.

[0030] In the figure: 1. reaction tank; 12. evaporation plate; 13. evaporation hole; 14. support column; 15. connecting shaft; 16. stirring bottom plate; 17. auxiliary plate; 171. connecting frame; 172. driving motor; 18. ramp plate; 19. stirring block; 2. sealing cover; 21. movable shaft; 22. slide rail; 23. pressing top plate; 24. sealing ring; 241. rebound column; 242. fixing block; 243. assembly groove; 244. sealing gasket; 3. sealing valve; 4. injection pipe; 5. connecting pipe; 6. condensation box; 7. discharge pipe. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the embodiments:

[0032] like Figure 1-5 As shown, the utility model provides the following technical solutions.

[0033] Example 1

[0034] The present embodiment provides a solid phosgene refining device, comprising a reaction tank 1, a sealing cover 2 is fixedly installed on the top of the reaction tank 1, a sealing valve 3 is fixedly installed on the top of the sealing cover 2, a material injection pipe 4 is fixedly installed on one side of the top of the sealing cover 2, a connecting pipe 5 is fixedly installed on the other end of the top of the sealing cover 2, a condensation box 6 is fixedly installed on the other end of the connecting pipe 5, a discharge pipe 7 is fixedly connected to the bottom of the reaction tank 1, a connecting shaft 15 is movably installed at the bottom of the inner cavity of the reaction tank 1, a stirring mechanism is arranged at the bottom of the connecting shaft 15, the stirring mechanism comprises a stirring bottom plate 16, a connecting frame 171 is fixedly connected to the bottom of the stirring bottom plate 16, an auxiliary disk 17 is fixedly connected to the other end of the connecting frame 171, a driving motor 172 is fixedly connected to the bottom of the connecting frame 171, a stirring block 19 is fixedly installed on the top of the auxiliary disk 17, a ramp plate 18 is movably installed on one side of the top of the auxiliary disk 17, the other side of the ramp plate 18 is fixedly installed on the inner wall of the reaction tank 1, and a support column 14 is fixedly connected to the inside of the connecting shaft 15. The top of the support column 14 is movably installed on the bottom of the sealing cover 2. The inner wall of the reaction tank 1 is fixedly installed with an evaporation plate 12. The surface of the evaporation plate 12 is provided with evaporation holes 13. The reaction gas is injected through the injection pipe 4, and the driving motor 172 provides power to drive the connecting frame 171 to rotate, drive the auxiliary plate 17 and the stirring bottom plate 16 to rotate and stir, and use the stirring block 19 and the stirring rod to rotate and stir, thereby driving the bottom of the inner cavity of the reaction tank 1 to rotate and stir, which is convenient for the function of rapid reaction at the bottom of the reaction tank 1, and cooperate with the inclination of the ramp plate 18 to make the gas at the bottom flow upward along the slope, which is conducive to the convenient reaction inside the device, and cooperate with the evaporation plate 12 to operate, use the internal evaporator for heat conversion, and use the evaporation holes 13 for heat transfer to achieve the function of heating and evaporation. After the reaction is completed, the condensation box 6 and the connecting pipe 5 are used to inject condensed gas, so that the internal gas is condensed into crystals, which is convenient for the convenient reaction of the device, and then the material is discharged from the discharge pipe 7.

[0035] Example 2

[0036] On the basis of Example 1, this embodiment provides a technical solution: preferably, a movable shaft 21 is fixedly installed inside the sealing cover 2, a slide rail 22 is opened on the outer side of the movable shaft 21, and a pressing mechanism is movably sleeved on the outer side of the slide rail 22. The pressing mechanism includes a pressing top plate 23, and the inner side of the pressing top plate 23 is movably installed inside the slide rail 22, and a sealing ring 24 is movably sleeved on the outer side of the pressing top plate 23. When the reaction tank 1 is used for sealing reaction, the slide rail 22 is electrically driven to drive the pressing top plate 23 to move and press down, thereby reducing the internal space and achieving the function of compressing the internal air, which is conducive to the convenient reaction of the device and improves the working efficiency of the device.

[0037] Example 3

[0038] On the basis of Example 1, this embodiment provides a technical solution: preferably, an assembly groove 243 is opened on the inner side of the sealing ring 24, a sealing gasket 244 is fixedly installed inside the assembly groove 243, a rebound column 241 is movably installed on the outer side of the sealing ring 24, and a fixed block 242 is fixedly installed on the other end of the rebound column 241. When the pressing top plate 23 is moved downward, the outer side of the pressing top plate 23 is squeezed on the inner side of the sealing ring 24, and the sealing gasket 244 is used for sealing connection. Then, the bottom of the sealing ring 24 cooperates with the push of the rebound column 241 to squeeze the sealing ring 24 at the bottom by the rebound force, so that the sealing ring 24 is conveniently connected tightly with the pressing top plate 23, thereby increasing the sealing function and facilitating the convenient response of the device.

[0039] The working principle of the solid phosgene refining device is described in detail below.

[0040] like Figure 1-5 As shown, the reaction gas is injected through the injection pipe 4, and the driving motor 172 provides power to drive the connecting frame 171 to rotate, drive the auxiliary plate 17 and the stirring bottom plate 16 to rotate and stir, and use the stirring block 19 and the stirring rod to rotate and stir, thereby driving the bottom of the inner cavity of the reaction tank 1 to rotate and stir, which is convenient for the rapid reaction function of the bottom of the reaction tank 1, and cooperates with the inclination of the ramp plate 18 to make the gas at the bottom flow upward along the slope, which is conducive to the convenient reaction inside the device, and cooperates with the evaporation plate 12 to operate electrically, use the internal evaporator to perform heat conversion, and use the evaporation hole 13 to transfer heat to achieve the function of heating and evaporation. After the reaction is completed, the condensation box 6 and the connecting pipe 5 are used to inject condensed gas so that the inner cavity The gas in the part is condensed into crystals, which is convenient for the reaction of the device. The material is then discharged from the discharge pipe 7. When the reaction tank 1 is sealed for reaction, the slide rail 22 is electrically driven to drive the downward pressing top plate 23 to move and press down, thereby reducing the internal space and achieving the function of compressing the internal air, which is beneficial to the convenient reaction of the device and improves the working efficiency of the device. When the downward pressing top plate 23 moves and presses down, the outer side of the downward pressing top plate 23 is squeezed on the inner side of the sealing ring 24, and the sealing gasket 244 is used for sealing connection. Then, the bottom of the sealing ring 24 cooperates with the push of the rebound column 241, and the rebound force is used to squeeze the sealing ring 24 at the bottom, so that the sealing ring 24 is tightly connected with the downward pressing top plate 23, thereby increasing the sealing function.

[0041] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A solid phosgene refining device, comprising a reaction tank (1), characterized in that: A sealing cover (2) is fixedly mounted on the top of the reaction tank (1), a sealing valve (3) is fixedly mounted on the top of the sealing cover (2), a material injection pipe (4) is fixedly mounted on one side of the top of the sealing cover (2), a connecting pipe (5) is fixedly mounted on the other end of the top of the sealing cover (2), a condensation box (6) is fixedly mounted on the other end of the connecting pipe (5), and a discharge pipe (7) is fixedly connected to the bottom of the reaction tank (1); A connecting shaft (15) is movably mounted at the bottom of the inner cavity of the reaction tank (1), and a stirring mechanism is arranged at the bottom of the connecting shaft (15); A movable shaft (21) is fixedly installed inside the sealing cover (2), a slide rail (22) is provided on the outside of the movable shaft (21), and a pressing mechanism is movably sleeved on the outside of the slide rail (22).

2. A solid phosgene refining device according to claim 1, characterized in that: The stirring mechanism comprises a stirring bottom plate (16), the bottom of the stirring bottom plate (16) is fixedly connected to a connecting frame (171), the other end of the connecting frame (171) is fixedly connected to an auxiliary plate (17), and the bottom of the connecting frame (171) is fixedly connected to a driving motor (172).

3. A solid phosgene refining device according to claim 2, characterized in that: A stirring block (19) is fixedly mounted on the top of the auxiliary disk (17), a ramp plate (18) is movably mounted on one side of the top of the auxiliary disk (17), and the other side of the ramp plate (18) is fixedly mounted on the inner wall of the reaction tank (1).

4. A solid phosgene refining device according to claim 1, characterized in that: A support column (14) is fixedly connected to the interior of the connecting shaft (15), and the top of the support column (14) is movably mounted on the bottom of the sealing cover (2).

5. A solid phosgene refining device according to claim 1, characterized in that: An evaporation plate (12) is fixedly mounted on the inner wall of the reaction tank (1), and evaporation holes (13) are provided on the surface of the evaporation plate (12).

6. A solid phosgene refining device according to claim 1, characterized in that: The pressing mechanism comprises a pressing top plate (23), the inner side of the pressing top plate (23) is movably mounted inside the slide rail (22), and the outer side of the pressing top plate (23) is movably sleeved with a sealing ring (24).

7. A solid phosgene refining device according to claim 6, characterized in that: An assembly groove (243) is provided on the inner side of the sealing ring (24), a sealing gasket (244) is fixedly installed inside the assembly groove (243), a rebound column (241) is movably installed on the outer side of the sealing ring (24), and a fixing block (242) is fixedly installed on the other end of the rebound column (241).

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