A reaction kettle for ether alcohol synthesis

Abstract

The utility model discloses a kind of reaction kettle for ether alcohol synthesis, kettle body top end is provided with kettle cover, the center position of kettle cover upper surface is provided with motor by motor base, the output shaft of motor is connected with the top end of main shaft by coupling, main shaft passes through kettle cover and is respectively equipped with lower layer stirring paddle and upper layer stirring paddle, the lower end of kettle body outside is wrapped with lower layer jacket, the upper end of kettle body outside is wrapped with upper layer jacket, lower layer stirring paddle and upper layer stirring paddle are rotationally arranged in kettle body, the position of lower layer stirring paddle corresponds with lower layer jacket, the position of upper layer stirring paddle corresponds with upper layer jacket, kettle body side wall is provided with lower layer temperature sensor installation sleeve and upper layer temperature sensor installation sleeve, the utility model structure is reasonable, avoid appearing upper layer temperature is lower than the case of lower layer, and by lower layer stirring paddle and upper layer stirring paddle, guarantee that material at lower layer jacket and upper layer jacket can all realize stirring, can guarantee complete reaction.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, specifically a reaction vessel for ether alcohol synthesis. Background Technology

[0002] Ether alcohols are an important class of organic compounds, generally referring to compounds that contain both ether bonds (-O-) and hydroxyl groups (-OH) in their molecules. They are excellent solvents, intermediates, and functional chemicals, and are widely used in coatings, inks, cleaning agents, pharmaceuticals, pesticides, and other fields. Ethylene oxide alkoxylation is one of the mainstream processes for ether and alcohol synthesis. The alkoxylation reaction is carried out under nitrogen protection, with the temperature raised to a certain level (usually 120-180℃), and metered ethylene oxide is slowly and continuously introduced. Currently, most reactors used for ether and alcohol synthesis consist of a jacket directly wrapped around the outer body. This structure presents a temperature difference between the upper and lower layers. Although the temperature difference is small, better temperature control between the upper and lower layers would ensure a more reliable ether and alcohol synthesis reaction. Therefore, an improved technology is urgently needed to address this problem in the existing technology. Summary of the Invention

[0003] The purpose of this invention is to provide a reaction vessel for ether alcohol synthesis to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a reaction vessel for ether-alcohol synthesis, comprising a vessel body, a vessel cover, a motor, a main shaft, a lower stirring paddle, an upper stirring paddle, a lower jacket, and an upper jacket. The vessel body has a vessel cover at its top. A motor is mounted on the center of the upper surface of the vessel cover via a motor mount. The output shaft of the motor is connected to the top of the main shaft via a coupling. The main shaft passes through the vessel cover and is fitted with both the lower and upper stirring paddles. The lower end of the vessel body is covered by a lower jacket, and the upper end of the vessel body is covered by an upper jacket. Both the lower and upper stirring paddles are rotatably mounted within the vessel body. The lower stirring paddle corresponds to the lower jacket, and the upper stirring paddle corresponds to the upper jacket. The side wall of the vessel body is provided with a lower temperature sensor mounting sleeve and an upper temperature sensor mounting sleeve. The lower temperature sensor mounting sleeve passes through the lower jacket and the vessel body, and the upper temperature sensor mounting sleeve passes through the upper jacket and the vessel body.

[0005] Preferably, the present invention provides a reaction vessel for ether alcohol synthesis, wherein a discharge port is provided at the bottom of the vessel body.

[0006] Preferably, the present invention provides a reaction vessel for ether-alcohol synthesis, wherein the vessel lid is provided with a drip inlet, a pressure gauge inlet, a manhole, an inert gas inlet, an exhaust port, and several feed inlets.

[0007] Preferably, the present invention provides a reaction vessel for ether-alcohol synthesis, wherein the lower part of the lower jacket is provided with a first heat exchange medium inlet, and the upper part of the lower jacket is provided with a first heat exchange medium outlet.

[0008] Preferably, the present invention provides a reaction vessel for ether-alcohol synthesis, wherein the lower part of the upper jacket is provided with a second heat exchange medium inlet, and the upper part of the upper jacket is provided with a second heat exchange medium outlet.

[0009] Preferably, the present invention provides a reaction vessel for ether-alcohol synthesis, wherein the outer wall of the upper jacket is provided with several support seats.

[0010] Preferably, the present invention provides a reaction vessel for ether-alcohol synthesis, wherein a shaft seal is provided at the center of the vessel cover, and the main shaft passes through the shaft seal and rotates in cooperation with the shaft seal.

[0011] Preferably, the reaction vessel for ether-alcohol synthesis provided by this utility model has a support plate inside both the lower jacket and the upper jacket.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The vessel body is equipped with a lower jacket and an upper jacket. The temperature inside the vessel body is controlled by the two jackets to prevent the upper jacket temperature from being lower than the lower jacket temperature. The main shaft is equipped with a lower agitator and an upper agitator. The lower agitator is located in the lower jacket and the upper agitator is located in the upper jacket, ensuring that the materials in both jackets are stirred and that the reaction is complete. At the same time, the side wall of the vessel body is equipped with a lower temperature sensor mounting sleeve in the lower jacket and an upper temperature sensor mounting sleeve in the upper jacket, so that two temperature sensors can be installed to monitor the temperature in the lower and upper jackets respectively, ensuring that the reaction in both jackets is carried out at the specified temperature. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram: 1. Vessel body; 2. Vessel cover; 3. Motor; 4. Main shaft; 5. Lower stirring paddle; 6. Upper stirring paddle; 7. Lower jacket; 8. Upper jacket; 9. Motor base; 10. Lower temperature sensor mounting sleeve; 11. Upper temperature sensor mounting sleeve; 12. Discharge port; 13. Dropping port; 14. Pressure gauge port; 15. Manhole; 16. Inert gas inlet; 17. Exhaust port; 18. Feed inlet; 19. First heat exchange medium inlet; 20. First heat exchange medium outlet; 21. Second heat exchange medium inlet; 22. Second heat exchange medium outlet; 23. Support base; 24. Shaft seal; 25. Support plate. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] Please see Figure 1 This utility model provides a technical solution: a reaction vessel for ether-alcohol synthesis, comprising a vessel body 1, a vessel cover 2, a motor 3, a main shaft 4, a lower stirring paddle 5, an upper stirring paddle 6, a lower jacket 7, and an upper jacket 8. The vessel cover 2 is located at the top of the vessel body 1. A motor 3 is mounted on the center of the upper surface of the vessel cover 2 via a motor mount 9. The output shaft of the motor 3 is connected to the top of the main shaft 4 via a coupling. The main shaft 4 passes through the vessel cover 2 and is respectively equipped with the lower stirring paddle 5 and the upper stirring paddle 6. The lower end of the vessel body 1 is covered by the lower jacket 7. The upper end is wrapped with an upper jacket 8. The lower stirring paddle 5 and the upper stirring paddle 6 are both rotatably installed inside the vessel body 1. The lower stirring paddle 5 corresponds to the lower jacket 7, and the upper stirring paddle 6 corresponds to the upper jacket 8. The side wall of the vessel body 1 is provided with a lower temperature sensor mounting sleeve 10 and an upper temperature sensor mounting sleeve 11. The lower temperature sensor mounting sleeve 10 passes through the lower jacket 7 and the vessel body 1, and the upper temperature sensor mounting sleeve 11 passes through the upper jacket 8 and the vessel body 1. The bottom of the vessel body 1 is provided with a discharge port 12 to realize the discharge of materials. The vessel cover 2 is equipped with a drip inlet 13, a pressure gauge port 14, a manhole 15, an inert gas inlet 16, an exhaust port 17, and several feed inlets 18. The drip inlet 13 is used to drip ethylene oxide. The pressure gauge port 14 is used to install a pressure gauge to monitor the internal pressure of the vessel body 1. The manhole 15 is used for personnel to enter the vessel body 1 and for flushing inside the vessel body 1. A sealing cover is installed at the manhole 15. The inert gas inlet 16 is used to fill nitrogen to expel oxygen from the vessel body 1. The exhaust port 17 is used to expel air from the vessel body 1 and relieve pressure. The feed inlets 18 are used to add starting alcohol, catalyst, and acid solution, respectively. A shaft seal 24 is provided at the center of the vessel cover 2. The main shaft 4 passes through the shaft seal 24 and rotates with the shaft seal 24 to ensure the stability of the main shaft 4 and the sealing of the connection between the main shaft 4 and the vessel cover 2. The lower jacket 7 has a first heat exchange medium inlet 19 at its lower part and a first heat exchange medium outlet 20 at its upper part to allow the heat exchange medium to enter and leave the lower jacket 7. The upper jacket 8 has a second heat exchange medium inlet 21 at its lower part and a second heat exchange medium outlet 22 at its upper part to allow the heat exchange medium to enter and leave the upper jacket 8. The outer wall of the upper jacket 8 is provided with several support seats 23 to achieve overall support and fixation. Both the lower jacket 7 and the upper jacket 8 are provided with support plates 25 inside to ensure the support strength of the lower jacket 7 and the upper jacket 8.

[0017] Installation method and operating principle: During processing, two oblique holes are pre-drilled on the side wall of the vessel body 1, and two oblique holes are pre-drilled on the side walls of the upper jacket 8 and the lower jacket 7. First, the upper jacket 8 is fitted onto the upper part of the vessel body 1, aligning the oblique holes with the oblique holes on the side wall of the vessel body 1. Then, the upper jacket 8 is welded to the vessel body 1. The lower jacket 7 is fitted onto the bottom of the vessel body 1 from bottom to top and welded, aligning the oblique holes with the oblique holes on the side wall of the vessel body 1. Then, the lower jacket 7 is welded to the vessel body 1. At this time, the support plates 25 inside the upper jacket 8 and the lower jacket 7 are both supported by the inner wall of the vessel body 1. The upper temperature sensor mounting sleeve 11 is passed through the corresponding oblique holes of the upper jacket 8 and the vessel body 1, and welded to the upper jacket 8 and the vessel body 1 respectively. The lower temperature sensor mounting sleeve 10 is passed through the corresponding oblique holes of the lower jacket 7 and the vessel body 1, and welded to the lower jacket 7 and the vessel body 1 respectively. Weld the discharge port 12 to the bottom of the vessel body 1, then install the motor 3 on the upper surface of the motor base 9. Pass the main shaft 4, which is connected to the lower stirring paddle 5 and the upper stirring paddle 6, through the shaft seal 24 of the vessel cover 2 and connect it to the output shaft of the motor 3 through the coupling. Finally, lift the vessel cover 2 and place the main shaft 4, the lower stirring paddle 5 and the upper stirring paddle 6 into the vessel body 1. Weld the vessel cover 2 to the vessel body 1 to complete the installation. Before use, the lower jacket 7 is connected to a heat exchange medium circulation pipeline through the first heat exchange medium inlet 19 and the first heat exchange medium outlet 20, and the upper jacket 8 is connected to another heat exchange medium circulation pipeline through the second heat exchange medium inlet 21 and the second heat exchange medium outlet 22. The inert gas inlet 16 is connected to a nitrogen tank or a nitrogen regeneration system through a pipeline. Multiple feed ports 18 are connected to the starting alcohol storage tank, catalyst storage tank, and acid solution storage tank through pipelines and pumps, respectively. The drip port 13 is connected to the ethylene oxide storage tank through a pipeline and a metering pump. Two temperature sensors are inserted into the lower temperature sensor mounting sleeve 10 and the upper temperature sensor mounting sleeve 11, respectively. During operation, the starting alcohol and catalyst are added to reactor body 1, and motor 3 is started. Motor 3 drives the lower impeller 5 and upper impeller 6 to rotate via main shaft 4. Nitrogen gas is introduced simultaneously, and circulating heat transfer oil is introduced into the lower jacket 7 and upper jacket 8, respectively, with the temperature controlled at 120~180℃. Then, metered ethylene oxide is slowly and continuously introduced through dropper 13 to carry out the alkoxylation reaction. The mixture is continuously stirred at high temperature for a period of time to ripen and ensure the reaction is complete. After the reaction is completed, the catalyst is neutralized with acid solution to obtain a crude product, which is finally discharged from the discharge port. Subsequent filtration and distillation yield the high-purity target product.This utility model has a reasonable structure. The vessel body 1 is provided with a lower jacket 7 and an upper jacket 8. The temperature inside the vessel body 1 is controlled by the two jackets to prevent the upper layer temperature from being lower than the lower layer. The main shaft 4 is equipped with a lower stirring paddle 5 and an upper stirring paddle 6. The lower stirring paddle 5 is located at the lower jacket 7 and the upper stirring paddle 6 is located at the upper jacket 8, which ensures that the materials in the lower jacket 7 and the upper jacket 8 can be stirred to ensure complete reaction. At the same time, the side wall of the vessel body 1 is provided with a lower temperature sensor mounting sleeve 10 at the lower jacket 7 and an upper temperature sensor mounting sleeve 11 at the upper jacket 8, so that two temperature sensors can be installed to monitor the temperature of the lower jacket 7 and the upper jacket 8 respectively, ensuring that the upper and lower layers react at the specified temperature.

[0018] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0019] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A reaction vessel for the synthesis of ether alcohols, characterized in that: The vessel includes a vessel body (1), a vessel lid (2), a motor (3), a main shaft (4), a lower stirring paddle (5), an upper stirring paddle (6), a lower jacket (7), and an upper jacket (8). The vessel body (1) is topped with a vessel lid (2). A motor (3) is mounted on the center of the upper surface of the vessel lid (2) via a motor mount (9). The output shaft of the motor (3) is connected to the top of the main shaft (4) via a coupling. The main shaft (4) passes through the vessel lid (2) and is fitted with the lower stirring paddle (5) and the upper stirring paddle (6). The lower end of the vessel body (1) is covered by a lower jacket (7). The upper part of the outer part is wrapped with an upper jacket (8). The lower stirring paddle (5) and the upper stirring paddle (6) are rotatably installed inside the vessel body (1). The lower stirring paddle (5) corresponds to the position of the lower jacket (7), and the upper stirring paddle (6) corresponds to the position of the upper jacket (8). The side wall of the vessel body (1) is provided with a lower temperature sensor mounting sleeve (10) and an upper temperature sensor mounting sleeve (11). The lower temperature sensor mounting sleeve (10) passes through the lower jacket (7) and the vessel body (1), and the upper temperature sensor mounting sleeve (11) passes through the upper jacket (8) and the vessel body (1).

2. The reaction vessel for ether alcohol synthesis according to claim 1, characterized in that: The bottom of the vessel body (1) is provided with a discharge port (12).

3. The reaction vessel for ether alcohol synthesis according to claim 1, characterized in that: The lid (2) is provided with a drip inlet (13), a pressure gauge inlet (14), a manhole (15), an inert gas inlet (16), an exhaust port (17), and several feed inlets (18).

4. The reaction vessel for ether alcohol synthesis according to claim 1, characterized in that: The lower part of the lower jacket (7) is provided with a first heat exchange medium inlet (19), and the upper part of the lower jacket (7) is provided with a first heat exchange medium outlet (20).

5. The reaction vessel for ether alcohol synthesis according to claim 1, characterized in that: The lower part of the upper jacket (8) is provided with a second heat exchange medium inlet (21), and the upper part of the upper jacket (8) is provided with a second heat exchange medium outlet (22).

6. The reaction vessel for ether alcohol synthesis according to claim 1, characterized in that: The outer wall of the upper jacket (8) is provided with several support seats (23).

7. The reaction vessel for ether alcohol synthesis according to claim 1, characterized in that: A shaft seal (24) is provided at the center of the lid (2), and the main shaft (4) passes through the shaft seal (24) and rotates with the shaft seal (24).

8. The reaction vessel for ether alcohol synthesis according to claim 1, characterized in that: Both the lower jacket (7) and the upper jacket (8) are equipped with support plates (25).

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