Automatic boron trifluoride methyl ether complex production device

Abstract

The utility model relates to the field of chemical industry, and discloses an automatic boron trifluoride methyl ether complex production device, which comprises a reaction kettle, a water pump I, a condensing tower and a distillation tower, a motor is arranged at the top of the reaction kettle, the output end of the motor is fixedly connected with a stirring rod, a methyl ether tank is arranged on one side of the reaction kettle, and a water pump II is arranged on the other side of the reaction kettle. The top of the methyl ether tank is connected into the reaction kettle through a pipeline, an air inlet pipe is mounted on the other side of the reaction kettle, an auxiliary stirring assembly is arranged at the bottom of the inner side of the reaction kettle, the reaction kettle is connected with the first water pump through a liquid outlet pipe, and a quick release assembly is arranged on the outer side of the liquid outlet pipe. According to the utility model, the gas-liquid mass transfer efficiency is remarkably improved and the reaction process is accelerated by utilizing the synergistic effect of the cavitation effect and the mechanical stirring. And in the recovery stage, the activated carbon filter plate is adopted to primarily adsorb redundant boron trifluoride, and the buckle type design is convenient for rapid replacement, so that the operation convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical industry especially relates to a kind of automatic boron trifluoride etherate complex production device. BACKGROUND

[0002] In the field of chemical industry, boron trifluoride etherate complex (BF3·OEt2) is an important Lewis acid catalyst, widely used in organic synthesis reactions, such as esterification, acylation, polymerization and cyclization processes, especially in fine chemical and pharmaceutical intermediates production.

[0003] Boron trifluoride etherate complex (BF3·OEt2) is an important chemical reagent, widely used in organic synthesis, catalysis and other fields. Boron trifluoride (BF3) and methyl ether (OEt2) occur complexation in the reaction kettle to form boron trifluoride etherate complex (BF3·OEt2). This process requires precise control of reaction conditions to ensure complexing efficiency and product quality.

[0004] An automatic boron trifluoride etherate complex production device combines precise reaction control technology and intelligent process management, using advanced gas-liquid reactors, efficient separation systems and fully enclosed operation design, which not only significantly improves production efficiency and product quality, but also effectively reduces the operation risk of hazardous chemicals and waste emissions, becoming an important technical support for green chemical industry.

[0005] However, the existing technology has the following deficiencies and shortcomings in the production of boron trifluoride etherate complex: first, the reaction efficiency of gaseous boron trifluoride and liquid methyl ether is low, and traditional reaction kettles usually rely only on mechanical stirring for mixing, with limited gas-liquid interface mass transfer efficiency, resulting in slow reaction speed and low conversion rate; secondly, in the recovery stage of the product, free boron trifluoride is difficult to separate completely, which limits the purity of the product and may cause secondary pollution. At the same time, the existing filter device is complex to replace, which increases the maintenance cost and operation difficulty, reduces the continuity and economy of production.

[0006] To solve the above problems, an automatic boron trifluoride etherate complex production device is proposed. INVENTION CONTENTS

[0007] To make up for the above shortcomings, the utility model provides an automatic boron trifluoride etherate complex production device, aiming to solve the problems of low reaction efficiency, insufficient product purity and complex operation and maintenance of existing automatic boron trifluoride etherate complex production devices.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: an automated boron trifluoride methyl ether complex production device, comprising a reaction vessel, a water pump one, a condenser tower, and a distillation tower. A motor is installed on the top of the reaction vessel, and a stirring rod is fixedly connected to the output end of the motor. A methyl ether tank is installed on one side of the reaction vessel, and the top of the methyl ether tank is connected to the interior of the reaction vessel through a pipe. An air inlet pipe is installed on the other side of the reaction vessel. An auxiliary stirring assembly is installed at the bottom inner side of the reaction vessel. The reaction vessel and the water pump one are connected through a liquid outlet pipe, and a quick-release assembly is installed on the outer side of the liquid outlet pipe. The output end of the water pump one is connected to the condenser tower through a pipe, and the condenser tower and the distillation tower are connected through a water pump two.

[0009] The auxiliary stirring assembly includes a fixed plate, a driver is installed inside the fixed plate, an ultrasonic vibration rod is fixedly connected to the output end of the driver, and a cooling pipe is installed on the outside of the ultrasonic vibration rod.

[0010] As a further description of the above technical solution:

[0011] The interior of the dimethyl ether tank is under high pressure, and a high-pressure nozzle is installed at the end of the pipe at the output end of the dimethyl ether tank.

[0012] As a further description of the above technical solution:

[0013] The air intake pipe is connected to a boron trifluoride gas cylinder.

[0014] As a further description of the above technical solution:

[0015] The condenser is used to separate boron trifluoride from the product, and the distillation column is used to separate dimethyl ether from the product.

[0016] As a further description of the above technical solution:

[0017] The fixing plate is fixedly connected to the bottom of the reactor.

[0018] As a further description of the above technical solution:

[0019] The quick-release assembly includes a card box, with a pin slidably connected inside the card box, a spring sleeved on the outside of the pin, a limit plate fixedly connected to the middle of the pin, and a lever provided on the top of the card box.

[0020] As a further description of the above technical solution:

[0021] The bottom of the paddle passes through the side wall of the card box and abuts against the top of the limiting plate, which is slidably connected inside the card box.

[0022] As a further description of the above technical solution:

[0023] The card box is fixed to the outside of the liquid outlet pipe, and the outside of the pin passes through the side wall of the card box and the liquid outlet pipe and is inserted into the interior of the filter plate.

[0024] This utility model has the following beneficial effects:

[0025] 1. In this invention, an ultrasonic vibrating rod is installed in the reaction vessel and combined with a traditional stirring rod. This fully utilizes the cavitation effect of ultrasound and the mixing effect of mechanical stirring to significantly enhance the interfacial contact between gaseous boron trifluoride and liquid dimethyl ether. Ultrasonic vibration promotes rapid bubble collapse, while the stirring rod accelerates liquid convection. The synergistic effect of these two factors effectively improves the gas-liquid mass transfer efficiency and reaction rate, thereby significantly shortening the reaction time.

[0026] 2. In this invention, during the recovery of boron trifluoride methyl ether complex, excess boron trifluoride in the reaction mixture is adsorbed by an activated carbon filter plate. Activated carbon, with its high adsorption capacity, reduces the residue of free boron trifluoride, improving product purity. Simultaneously, the filter plate employs a snap-on fixing design, facilitating quick disassembly and replacement, thereby reducing maintenance difficulty and downtime, further enhancing the operating efficiency and convenience of the device.

[0027] 3. In this invention, during the recovery stage of the boron trifluoride methyl ether complex, although the activated carbon filter plate can initially adsorb excess boron trifluoride, it still cannot completely separate the residual boron trifluoride and methyl ether. Therefore, a combined action of a condenser and a distillation column is further introduced. The condenser uses temperature gradient cooling to partially liquefy the highly volatile boron trifluoride and methyl ether gases, achieving initial separation. Subsequently, the distillation column utilizes the boiling point difference between the two to distill the condensed product, thoroughly removing the residual boron trifluoride and methyl ether, ensuring high product purity, and simultaneously recovering these two substances for recycling, further improving production economy and environmental friendliness. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of an automated boron trifluoride methyl ether complex production device proposed in this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the stirring rod in an automated boron trifluoride methyl ether complex production device proposed in this utility model;

[0030] Figure 3 This is a schematic diagram of the ultrasonic vibrating rod of an automated boron trifluoride methyl ether complex production device proposed in this utility model;

[0031] Figure 4 This is a schematic diagram of the liquid outlet pipe of an automated boron trifluoride methyl ether complex production device proposed in this utility model;

[0032] Figure 5 This is a schematic diagram of the pin structure of an automated boron trifluoride methyl ether complex production device proposed in this utility model.

[0033] Legend:

[0034] 1. Reactor; 2. Dimethyl ether tank; 3. Motor; 4. Discharge pipe; 5. Water pump one; 6. Condensation tower; 7. Distillation tower; 8. Water pump two; 9. Stirring rod; 10. Auxiliary stirring assembly; 1001. Fixing plate; 1002. Driver; 1003. Ultrasonic vibration rod; 1004. Cooling pipe; 11. Air inlet pipe; 12. Quick release assembly; 1201. Cartridge; 1202. Pin; 1203. Spring; 1204. Limiting plate; 1205. Paddle; 13. Filter plate. Detailed Implementation

[0035] 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.

[0036] Reference Figure 1 - Figure 3 This utility model provides an embodiment of an automated boron trifluoride methyl ether complex production device, comprising a reaction vessel 1, with a motor 3 mounted on its top. The output end of the motor 3 is fixedly connected to a stirring rod 9 for stirring and mixing materials during the reaction process. An auxiliary stirring assembly 10 is mounted at the bottom of the reaction vessel 1, including a fixing plate 1001 fixed to the bottom of the reaction vessel 1, and a driver 1002 inside the fixing plate 1001. The output end of the driver 1002 is connected to an ultrasonic vibration rod 1003, which uses ultrasonic vibration to accelerate the mass transfer reaction between gaseous boron trifluoride and liquid methyl ether, thereby increasing the reaction rate. A cooling pipe 1004 is wrapped around the outside of the ultrasonic vibration rod 1003, maintaining a constant temperature inside the reaction vessel 1 through the circulation of coolant. Furthermore, a methyl ether tank 2 is connected to one side of the reaction vessel 1. The methyl ether tank 2 is under high pressure, and its output end precisely sprays methyl ether into the reaction vessel 1 through a high-pressure nozzle; the other side is connected to an external boron trifluoride gas tank through an air inlet pipe 11, ensuring the stability of the raw material supply during the reaction process.

[0037] Reference Figure 4 - Figure 5The bottom of the reactor 1 is connected to a water pump 5 via an outlet pipe 4. The output of the water pump 5 is connected to a condenser tower 6. The condenser tower 6 is used for preliminary separation of the products, removing excess boron trifluoride gas through condensation technology. The condenser tower 6 is connected to a distillation tower 7 via a water pump 8. The distillation tower 7 further separates dimethyl ether from the products using a rectification method to improve the purity of the final product. A quick-release assembly 12 is provided on the outside of the outlet pipe 4. The quick-release assembly 12 includes a card box 1201, with a sliding pin 1202 inside the card box 1201. A spring 1203 is sleeved on the outside of the pin 1202. A limit plate 1204 is fixedly connected to the middle of the pin 1202. The extension and retraction of the pin 1202 can be controlled by a lever 1205, allowing the pin 1202 to pass through the side wall of the card box 1201 and the outlet pipe 4, and insert into the inside of the filter plate 13 to fix the filter plate 13. The quick-release assembly 12 facilitates the rapid disassembly and replacement of the filter plate 13, improving operational convenience while ensuring the safety and stability of the separation and filtration process.

[0038] Working Principle: Gaseous boron trifluoride enters reactor 1 through inlet pipe 11, while dimethyl ether is precisely injected into reactor 1 from high-pressure dimethyl ether tank 2 via a high-pressure nozzle. Inside reactor 1, stirring rod 9 and ultrasonic vibrating rod 1003 work together to enhance gas-liquid contact and improve reaction efficiency through mechanical stirring and ultrasonic cavitation effects. Cooling pipe 1004 ensures a constant reaction temperature. The product is transported to condenser tower 6 through outlet pipe 4 via water pump 5. Before that, it passes through activated carbon filter plate 13 inside outlet pipe 4 for adsorption, removing boron trifluoride from the product. Quick-release assembly 12 facilitates rapid replacement of filter plate 13, ensuring the continuity and convenience of the entire separation process. Condenser tower 6 uses cooling technology to remove excess boron trifluoride gas; the remaining liquid is transported to distillation tower 7 via water pump 8. Distillation tower 7 separates dimethyl ether through distillation, improving the purity of the final product.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 automated apparatus for producing boron trifluoride methyl ether complex, comprising a reaction vessel (1), a water pump (5), a condenser (6), and a distillation column (7), characterized in that: The top of the reactor (1) is equipped with a motor (3), and the output end of the motor (3) is fixedly connected to a stirring rod (9). A dimethyl ether tank (2) is installed on one side of the reactor (1), and the top of the dimethyl ether tank (2) is connected to the interior of the reactor (1) through a pipe. An air inlet pipe (11) is installed on the other side of the reactor (1). An auxiliary stirring assembly (10) is provided at the bottom of the inner side of the reactor (1). The reactor (1) and the first water pump (5) are connected through a liquid outlet pipe (4). A quick-release assembly (12) is provided on the outside of the liquid outlet pipe (4). The output end of the first water pump (5) is connected to the condenser tower (6) through a pipe. The condenser tower (6) and the distillation tower (7) are connected through a second water pump (8). The auxiliary stirring assembly (10) includes a fixed plate (1001), a driver (1002) is provided inside the fixed plate (1001), an ultrasonic vibration rod (1003) is fixedly connected to the output end of the driver (1002), and a cooling pipe (1004) is provided on the outside of the ultrasonic vibration rod (1003).

2. The automated boron trifluoride methyl ether complex production apparatus according to claim 1, characterized in that: The interior of the dimethyl ether tank (2) is under high pressure, and a high-pressure nozzle is installed at the end of the pipe at the output end of the dimethyl ether tank (2).

3. The automated boron trifluoride methyl ether complex production apparatus according to claim 1, characterized in that: The air inlet pipe (11) is connected to a boron trifluoride gas cylinder.

4. The automated boron trifluoride methyl ether complex production apparatus according to claim 1, characterized in that: The condenser (6) is used to separate boron trifluoride from the product, and the distillation column (7) is used to separate dimethyl ether from the product.

5. The automated boron trifluoride methyl ether complex production apparatus according to claim 1, characterized in that: The fixing plate (1001) is fixedly connected to the bottom of the reactor (1).

6. The automated boron trifluoride methyl ether complex production apparatus according to claim 1, characterized in that: The quick-release assembly (12) includes a card box (1201), a pin (1202) is slidably connected inside the card box (1201), a spring (1203) is sleeved on the outside of the pin (1202), a limit plate (1204) is fixedly connected to the middle of the pin (1202), and a paddle (1205) is provided on the top of the card box (1201).

7. An automated boron trifluoride methyl ether complex production apparatus according to claim 6, characterized in that: The bottom of the paddle (1205) penetrates the side wall of the card box (1201) and abuts against the top of the limiting plate (1204), which is slidably connected inside the card box (1201).

8. An automated boron trifluoride methyl ether complex production apparatus according to claim 6, characterized in that: The card box (1201) is fixed to the outside of the liquid outlet pipe (4), and the outside of the pin (1202) passes through the side wall of the card box (1201) and the liquid outlet pipe (4) and is inserted into the interior of the filter plate (13).

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