Etherification reactor for synthesizing MTBE (methyl tert-butyl ether)

Abstract

The utility model discloses an etherification reactor for synthesizing MTBE, and particularly relates to the technical field of etherification reactors, the etherification reactor comprises a reaction tank, a rotating rod is arranged in the middle of the reaction tank, a plurality of stirring plates are fixedly connected to the middle of the rotating rod, through holes are formed in the surfaces of the stirring plates, and heat exchange water channels are formed in the middle wall bodies of the stirring plates; the top of the rotating rod extends to the top of the reaction tank and is fixedly sleeved with a gear ring, a gear is arranged on one side of the gear ring, and a motor is arranged at the top of the gear. Firstly, the motor is started to control the gear to drive the gear ring to drive the rotating rod to rotate, the interior of the reaction tank can be stirred and mixed through the stirring plate, the reaction rate and the conversion rate are improved, meanwhile, cooling liquid is injected into the water inlet pipe, so that the cooling liquid directly flows in the stirring plate, the contact area with reaction materials is large, and the reaction efficiency is improved. Heat exchange is sufficient, reaction heat can be rapidly and effectively removed, it is guaranteed that the reaction temperature is stabilized in a suitable range, and side reactions are reduced.

Description

Technical Field

[0001] This invention relates to the field of etherification reactor technology, and more specifically, to an etherification reactor for synthesizing MTBE. Background Technology

[0002] MTBE generally refers to methyl tert-butyl ether, which is an organic compound with the chemical formula C5H. 12 O is a colorless and transparent liquid, insoluble in water but readily soluble in ethanol and ether. It is an excellent high-octane gasoline additive and antiknock agent, mainly used as a gasoline additive. It has excellent antiknock properties and increases the octane number. It can also be cracked to produce isobutylene. As an important gasoline additive and chemical raw material, its synthesis process requires high control of reaction conditions.

[0003] Existing reactors, which use heat exchange structures on the surface of the tank, have low heat exchange efficiency. Since the etherification reaction is exothermic, if the heat of reaction cannot be removed in time, the temperature inside the reactor will rise, which will not only reduce the catalyst activity but may also trigger side reactions (such as isobutylene dimerization), reducing the selectivity and purity of MTBE. Traditional heat exchange structures are independent of the stirring system, resulting in uneven heat transfer and further affecting the accuracy of temperature control. Therefore, an etherification reactor for the synthesis of MTBE is proposed. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an etherification reactor for synthesizing MTBE, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an etherification reactor for synthesizing MTBE, comprising a reaction vessel, a rotating rod disposed in the middle of the reaction vessel, a plurality of stirring plates fixedly connected to the middle of the rotating rod, through holes being formed on the surface of the stirring plates, and a heat exchange channel being formed in the middle wall of the stirring plates, the top of the rotating rod extending to the top of the reaction vessel and fixedly fitted with a toothed ring, a gear disposed on one side of the toothed ring, and a motor disposed on the top of the gear, the motor being started to control the gear to drive the toothed ring to rotate, which can control the rotating rod to drive the stirring plates to rotate and stir the inside of the reaction vessel, so as to fully mix it and improve the reaction rate; the through holes reduce the resistance during the stirring process, and at the same time allow some materials to form convection through the through holes, further enhancing the mixing effect and avoiding local material concentrations that are too high or too low;

[0006] Both ends of the rotating rod are fixedly connected to connecting rings. A first connecting head is provided at the top of the rotating rod, and a second connecting head is provided at the bottom of the rotating rod. A water outlet pipe is fixedly connected to the top of the first connecting head, and a water inlet pipe is fixedly connected to the bottom of the second connecting head. A sealing gasket is provided in the middle of both the first and second connecting heads. External liquid can enter the interior of the rotating rod and the stirring plate through the water inlet pipe and be discharged sequentially through the water outlet pipe. This allows for heat exchange with the heat generated by the reaction inside the reaction tank, thereby removing heat and controlling the internal reaction temperature. The sealing gasket improves the sealing strength of the connection and prevents cooling water leakage.

[0007] Preferably, a support plate is fixedly connected to the top of the reaction vessel, the motor is fixed to one side of the support plate, the gear meshes with the gear ring, the gear is limited to the top of the reaction vessel by the motor shaft, and the motor is supported by the support plate.

[0008] Preferably, both ends of the rotating rod penetrate the wall of the reaction vessel and are provided with sealing rings between them. A through hole is opened in the middle of the rotating rod, which is connected to the inner cavity of the heat exchange channel. The sealing rings can prevent material leakage from the reaction vessel and the entry of external air, ensuring the airtightness and stability of the reaction system. The liquid entering the rotating rod will pass through the middle of the heat exchange channel, so that both the rotating rod and the stirring plate can achieve heat exchange and realize the heat exchange effect.

[0009] Preferably, the first connector and the second connector are respectively fitted onto the outside of the two connecting rings. The inner cavity of the outlet pipe is connected to the inner cavity of the inlet pipe through the middle of the rotating rod and the middle of the hot water exchange channel. The first connector and the second connector are rotatably connected to the connecting rings. The first connector is fixed to one side of the support plate through the outlet pipe, and the second connector is fixed to the bottom of the reaction tank. The connecting rings facilitate connection with the first connector and the second connector.

[0010] Preferably, a feed pipe is fixedly connected to one side of the top of the reaction vessel, and a discharge pipe is fixedly connected to one side of the bottom of the reaction vessel. A valve is provided in the middle of the discharge pipe, which facilitates feeding through the feed pipe, facilitating discharging through the discharge pipe, and allowing for convenient control of the switch.

[0011] Preferably, the top of the reaction vessel is equipped with a control panel, and the bottom of the reaction vessel is fixedly connected with support legs. The sides of the reaction vessel are connected with an air inlet pipe and a liquid inlet pipe, with the air inlet pipe located at the bottom and the liquid inlet pipe located at the top. The support legs are used to stably support the entire reactor, ensuring that the reactor will not shake or tip over during operation, thereby enhancing the safety and stability of the equipment. Inert gas can be introduced through the air inlet pipe to replace the air in the reaction vessel, preventing oxygen from affecting the reaction. The liquid inlet pipe can be used to replenish catalysts or other auxiliary materials, enhancing the controllability of the reaction.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model first controls the gear to drive the gear ring to rotate by starting the motor. The stirring plate can stir and mix the inside of the reaction tank, which improves the reaction rate and conversion rate. At the same time, by injecting coolant into the water inlet pipe, the coolant flows directly in the stirring plate, which has a large contact area with the reactants and sufficient heat exchange. This can quickly and effectively remove the heat of reaction, ensure that the reaction temperature is stable within a suitable range, and reduce the occurrence of side reactions.

[0014] 2. This utility model also features a second connector and a first connector that are rotatably connected to the rotating rod via a connecting ring. This connection does not affect the rotation of the rotating rod or the flow of the coolant. The sealing gasket improves the sealing performance of the connection, and the sealing ring between the rotating rod and the reaction vessel enhances the sealing strength inside the reaction vessel. This effectively prevents cooling water leakage and material leakage, ensuring the stability of the reaction system and the activity of the catalyst, and extending the service life of the equipment.

[0015] In summary, through the interaction of the above-mentioned multiple effects, the coolant can flow directly inside the stirring plate while stirring, resulting in a large contact area with the reactants, sufficient heat exchange, rapid and effective removal of reaction heat, ensuring that the reaction temperature remains stable within a suitable range, and improving the reaction effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0018] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0019] Figure 4 This is a schematic diagram showing the disassembled structure of the rotating rod, the second connector, and the first connector of this utility model.

[0020] The attached diagram is labeled as follows: 1. Reaction vessel; 2. Rotating rod; 3. Stirring plate; 4. Through hole; 5. Hot water exchange channel; 6. Gear ring; 7. Connecting ring; 8. First connector; 9. Second connector; 10. Sealing gasket; 11. Water outlet pipe; 12. Water inlet pipe; 13. Gear; 14. Motor; 15. Support plate; 16. Discharge pipe; 17. Feed pipe; 18. Control panel; 19. Support leg. Detailed Implementation

[0021] The technical solutions of the present 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 the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] As attached Figure 1-4 The etherification reactor for synthesizing MTBE shown includes a reaction vessel 1. A rotating rod 2 is installed in the middle of the reaction vessel 1. Multiple stirring plates 3 are fixedly connected to the middle of the rotating rod 2. Through holes 4 are opened on the surface of the stirring plates 3. A heat exchange channel 5 is opened in the middle wall of the stirring plates 3. The top of the rotating rod 2 extends to the top of the reaction vessel 1 and is fixedly fitted with a toothed ring 6. A gear 13 is installed on one side of the toothed ring 6. A motor 14 is installed on the top of the gear 13. Starting the motor 14 controls the gear 13 to drive the toothed ring 6 to rotate. This can control the rotating rod 2 to drive the stirring plates 3 to rotate and stir the inside of the reaction vessel 1, so as to fully mix it and increase the reaction rate. The through holes 4 reduce the resistance during the stirring process and allow some materials to form convection through the through holes 4, further enhancing the mixing effect and avoiding local material concentrations that are too high or too low.

[0023] Both ends of the rotating rod 2 are fixedly connected to connecting rings 7. The top of the rotating rod 2 is provided with a first connecting head 8, and the bottom of the rotating rod 2 is provided with a second connecting head 9. The top of the first connecting head 8 is fixedly connected to a water outlet pipe 11, and the bottom of the second connecting head 9 is fixedly connected to a water inlet pipe 12. Both the first connecting head 8 and the second connecting head 9 are provided with sealing gaskets 10 in the middle. Through the water inlet pipe 12, external liquid can enter the interior of the rotating rod 2 and the stirring plate 3 and be discharged through the water outlet pipe 11 in sequence. The heat generated by the reaction inside the reaction tank 1 is exchanged to remove heat and control the internal reaction temperature. The sealing gaskets 10 improve the sealing strength of the connection and prevent cooling water leakage.

[0024] As attached Figure 1-4As shown, a support plate 15 is fixedly connected to the top of the reaction tank 1. The motor 14 is fixed to one side of the support plate 15. The gear 13 meshes with the gear ring 6. The gear 13 is limited to the top of the reaction tank 1 by the rotating shaft of the motor 14. Both ends of the rotating rod 2 penetrate the wall of the reaction tank 1 and a sealing ring is provided between them and the wall of the reaction tank 1. A through hole is opened in the middle of the rotating rod 2, which is connected to the inner cavity of the hot water exchange channel 5. The first connector 8 and the second connector 9 are respectively sleeved on the outside of the two connecting rings 7. The water outlet pipe 11 The inner cavity of the reactor is connected to the inner cavity of the inlet pipe 12 through the middle of the rotating rod 2 and the middle of the hot water exchange channel 5. The first connector 8 and the second connector 9 are both rotatably connected to the connecting ring 7. The first connector 8 is fixed to one side of the support plate 15 through the outlet pipe 11, and the second connector 9 is fixed to the bottom of the reactor 1. The top side of the reactor 1 is fixedly connected to the feed pipe 17, and the bottom side of the reactor 1 is fixedly connected to the discharge pipe 16. A valve is installed in the middle of the discharge pipe 16, and a control panel 1 is installed on the top of the reactor 1. 8. Support legs 19 are fixedly connected to the bottom of the reactor 1. An air inlet pipe and a liquid inlet pipe are connected to the side of the reactor 1. The air inlet pipe is located at the bottom and the liquid inlet pipe is located at the top. The motor 14 is supported by the support plate 15. The sealing ring can prevent material leakage and external air entry in the reactor 1, ensuring the airtightness and stability of the reaction system. The liquid entering the rotating rod 2 will pass through the middle of the heat exchange channel 5, so that the rotating rod 2 and the stirring plate 3 can achieve heat exchange and achieve the heat exchange effect. The connecting ring 7 can be easily connected to the first connector 8 and the second connector 9. The feed pipe 17 can be used for feeding and the discharge pipe 16 can be used for discharging. The valve can be used for easy control of the switch. The support legs 19 are used to stably support the entire reactor, ensuring that the reactor will not shake or tip over during operation, enhancing the safety and stability of the equipment. The air inlet pipe can be used to introduce inert gas to replace the air in the reactor 1 to prevent oxygen from affecting the reaction. The liquid inlet pipe can be used to supplement catalysts or other auxiliary materials to enhance the controllability of the reaction.

[0025] The working principle of this utility model is as follows: When in use, the raw materials are poured into the inside of the reaction tank 1 through the feed pipe 17, liquid can be input through the liquid inlet pipe, and gas can be input through the gas inlet pipe. At the same time as the reaction, the motor 14 is started to control the rotating rod 2 to drive the stirring plate 3 to rotate for stirring.

[0026] At the same time, coolant is introduced into the middle of the rotating rod 2 and the hot water exchange channel 5 through the water inlet pipe 12 and discharged through the water outlet pipe 11. This can remove the heat generated by the reaction inside the reaction tank 1, improve the uniformity of heat discharge, stabilize the temperature range inside the reaction tank 1, and improve the reaction effect.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An etherification reactor for synthesizing MTBE, comprising a reaction vessel (1), characterized in that: A rotating rod (2) is provided in the middle of the reaction vessel (1). A plurality of stirring plates (3) are fixedly connected to the middle of the rotating rod (2). A through hole (4) is provided on the surface of the stirring plate (3). A water exchange channel (5) is provided in the middle wall of the stirring plate (3). The top of the rotating rod (2) extends to the top of the reaction vessel (1) and is fixedly fitted with a toothed ring (6). A gear (13) is provided on one side of the toothed ring (6). A motor (14) is provided on the top of the gear (13). Both ends of the rotating rod (2) are fixedly connected to connecting rings (7). The top of the rotating rod (2) is provided with a first connector (8), and the bottom of the rotating rod (2) is provided with a second connector (9). The top of the first connector (8) is fixedly connected to a water outlet pipe (11), and the bottom of the second connector (9) is fixedly connected to a water inlet pipe (12). Both the first connector (8) and the second connector (9) are provided with sealing gaskets (10).

2. The etherification reactor for synthesizing MTBE according to claim 1, characterized in that: A support plate (15) is fixedly connected to the top of the reaction vessel (1). The motor (14) is fixed to one side of the support plate (15). The gear (13) meshes with the gear ring (6). The gear (13) is limited to the top of the reaction vessel (1) by the rotating shaft of the motor (14).

3. The etherification reactor for synthesizing MTBE according to claim 1, characterized in that: Both ends of the rotating rod (2) penetrate the wall of the reaction tank (1) and are provided with a sealing ring between them and the wall of the reaction tank (1). A through hole is provided in the middle of the rotating rod (2), and the through hole is connected to the inner cavity of the hot water exchange channel (5).

4. The etherification reactor for synthesizing MTBE according to claim 1, characterized in that: The first connector (8) and the second connector (9) are respectively fitted on the outside of the two connecting rings (7). The inner cavity of the water outlet pipe (11) is connected to the inner cavity of the water inlet pipe (12) through the middle of the rotating rod (2) and the middle of the hot water exchange channel (5). The first connector (8) and the second connector (9) are rotatably connected to the connecting ring (7). The first connector (8) is fixed to one side of the support plate (15) through the water outlet pipe (11), and the second connector (9) is fixed to the bottom of the reaction tank (1).

5. The etherification reactor for synthesizing MTBE according to claim 1, characterized in that: A feed pipe (17) is fixedly connected to one side of the top of the reaction vessel (1), and a discharge pipe (16) is fixedly connected to one side of the bottom of the reaction vessel (1). A valve is provided in the middle of the discharge pipe (16).

6. The etherification reactor for synthesizing MTBE according to claim 1, characterized in that: The top of the reaction vessel (1) is equipped with a control panel (18), and the bottom of the reaction vessel (1) is fixedly connected with support legs (19). The side of the reaction vessel (1) is connected with an air inlet pipe and a liquid inlet pipe, with the air inlet pipe located at the bottom and the liquid inlet pipe located at the top.

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