A reflux water-carrying reaction device for cyclization safe reaction of difenoconazole

Abstract

The utility model relates to reflux water-carrying reaction device technical field, and disclose a kind of for benzene ether difenoconazole cyclization safe reaction reflux water-carrying reaction device, including condenser tube, reaction kettle, heating platform and support, condenser tube and heating platform are fixedly installed on support, reaction kettle is installed on heating platform, still include water drain pipe, the water drain pipe includes layered pipe, buffer tube, connecting pipe, buffer tube is round arc, and top end is communicated with connecting pipe, bottom end is communicated with layered pipe middle, the top end of connecting pipe is communicated with condenser tube bottom end.The utility model, when using, the condensate that condenser tube is dripped is first fallen in the top of round arc buffer tube, then be sent to the middle part of layered pipe, in this way, it can avoid condensate drop when impacting organic matter floating layer, ensure that the purity of refluxing organic matter is enough, simultaneously, it can also automatically keep the liquid level of layered pipe, it is more convenient and safe to use.

Description

Technical Field

[0001] This utility model relates to the technical field of reflux water-carrying reaction devices, and more specifically to a reflux water-carrying reaction device for the safe cyclization reaction of phenyl ether tebuconazole. Background Technology

[0002] The cyclization reaction of difenoconazole usually requires a highly efficient reflux reaction apparatus to ensure that the water generated during the reaction can be removed in time, thereby driving the reaction toward the formation of the target product.

[0003] Currently, reflux in conventional reaction equipment is mainly achieved by adding a water separator below the condenser. During the reaction, the vapors of organic matter and water first enter the condenser tube, and then condense and drip into the water separator below. Due to the different densities of organic matter and water, stratification occurs, with the organic matter on top of the water. At this time, the organic matter floating on top will flow back into the reaction vessel from the top of the water separator, thus achieving reflux. If there is too much water in the water separator during the reaction, simply open the switch below the water separator to release the water in the lower layer.

[0004] However, in the above-mentioned reaction device, the condenser and water separator are arranged vertically. As a result, the mixture of organic matter and condensate drips directly from the top of the water separator, which impacts the top of the water separator, causing the organic matter and water to remix. Consequently, the purity of the organic matter flowing back into the reaction vessel decreases. Overall, it still has certain drawbacks in its use. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a reflux water-carrying reaction device for the safe cyclization reaction of difenoconazole, so as to solve the problem that in the process of using the existing reflux water-carrying reaction device, the condensed water and organic matter drip directly from the top of the water separator, causing impact and resulting in the organic matter and water remixing and the impurity of the refluxed organic matter.

[0006] This utility model provides the following technical solution: a reflux water-carrying reaction device for the safe cyclization reaction of difenoconazole, comprising a condenser, a reaction vessel, a heating platform, and a support. The condenser and the heating platform are fixedly installed on the support, and the reaction vessel is installed on the heating platform. It also includes a water distribution pipe, which comprises a layering pipe, a buffer pipe, and a connecting pipe. The buffer pipe is arc-shaped, with its top end connected to the connecting pipe and its bottom end connected to the middle of the layering pipe. The top end of the connecting pipe is connected to the bottom end of the condenser.

[0007] Furthermore, it also includes a steam transmission pipe, one end of which is connected to the reactor and the other end of which is connected to a connecting pipe.

[0008] Furthermore, the water distribution pipe also includes a return pipe, which is connected to the top of the stratification pipe, and the end of the return pipe away from the stratification pipe is connected to the steam transmission pipe.

[0009] Furthermore, the end of the reflux pipe furthest from the stratification pipe is lower than or equal to the top of the stratification pipe.

[0010] Furthermore, it also includes an infrared sensor and an electric valve. The infrared sensor is fixedly sleeved on the upper layer of the layered tube, and the height of the infrared sensor is level with the level of the organic liquid in the layered tube. The electric valve is electrically connected to the infrared sensor, and when the infrared sensor is triggered, the electric valve can be activated to open.

[0011] Furthermore, the condenser includes an inner tube and an outer tube. The inner tube is fixedly installed inside the outer tube, and a condensation chamber is formed between the inner tube and the outer tube. The bottom end of the inner tube is connected to the connecting pipe.

[0012] Furthermore, the condenser tube also includes a steam inlet and a steam outlet. The steam inlet is located at the bottom of the inner tube and is connected to the top of the connecting tube, while the steam outlet is located at the top of the inner tube.

[0013] Furthermore, the condenser tube also includes an inlet and a return outlet, which are connected to the condenser chamber. At the same time, the ends of the inlet and the return outlet that are away from the condenser chamber are connected to the outlet and inlet of the external coolant pump, respectively.

[0014] The technical effects and advantages of this utility model are as follows: 1. In use, the condensate dripping from the condenser tube will first fall on the top of the arc-shaped buffer tube and then be sent to the middle part of the layered tube. In this way, the condensate dripping will avoid impacting the floating organic matter layer and ensure that the purity of the returned organic matter is sufficient.

[0015] 2. In use, when the water level in the stratified tube rises, the infrared sensor will be triggered to start the electric valve to release water, thereby automatically maintaining the liquid level in the stratified tube, making it more convenient and safer to use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the condenser tube of this utility model.

[0017] The attached diagram is labeled as follows: 1. Condenser; 101. Inner tube; 102. Outer tube; 103. Steam inlet; 104. Steam outlet; 105. Liquid inlet; 106. Liquid return outlet; 107. Condensation chamber; 2. Reactor; 3. Heating platform; 4. Support; 5. Water distribution pipe; 501. Layering pipe; 502. Buffer pipe; 503. Connecting pipe; 504. Return pipe; 6. Steam supply pipe; 7. Infrared sensor; 8. Electric valve. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The reflux water-carrying reaction device for the cyclization reaction of phenyl ether tebuconazole involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Reference Figure 1-2 This utility model provides a reflux reaction device for the safe cyclization reaction of phenyl ether tebuconazole, including a condenser 1, a reaction vessel 2, a heating platform 3, and a support 4. The condenser 1 and the heating platform 3 are fixedly installed on the support 4, and the reaction vessel 2 is installed on the heating platform 3. It also includes a water distribution pipe 5, which includes a layering pipe 501, a buffer pipe 502, and a connecting pipe 503. The buffer pipe 502 is arc-shaped, and its top end is connected to the connecting pipe 503, and its bottom end is connected to the middle of the layering pipe 501. The top end of the connecting pipe 503 is connected to the bottom end of the condenser 1.

[0020] In use, simply add the reaction solvent into the reaction vessel 2 and connect the steam outlet 104 of the reaction vessel 2 to the connecting pipe 503. Then, start the heating platform 3 to heat the reaction vessel 2. After that, the vapor of the solvent and water will enter the condenser 1 for condensation, and the condensed liquid will be sent into the middle of the stratification pipe 501 after being counteracted by the buffer pipe 502. In this way, the impact on the floating organic layer can be effectively avoided, ensuring the purity of the reflux solvent.

[0021] It also includes a steam pipe 6, one end of which is connected to the reactor 2 and the other end is connected to the connecting pipe 503. In this way, the steam in the reactor 2 will be sent from the steam pipe 6 into the connecting pipe 503.

[0022] The water distribution pipe 5 also includes a return pipe 504, which is connected to the top of the stratification pipe 501, and the end of the return pipe 504 away from the stratification pipe 501 is connected to the steam pipe 6. In this way, the organic matter floating at the top of the stratification pipe 501 will flow back into the reactor 2 through the return pipe 504.

[0023] The end of the reflux pipe 504 away from the stratification pipe 501 is lower than or equal to the top of the stratification pipe 501, which promotes the reflux of organic matter and reduces leakage.

[0024] It also includes an infrared sensor 7 and an electric valve 8. The infrared sensor 7 is fixedly sleeved on the upper layer of the layered tube 501, and the height of the infrared sensor 7 is the same as the level of the organic liquid in the layered tube 501. The electric valve 8 is electrically connected to the infrared sensor 7, and when the infrared sensor 7 is triggered, the electric valve 8 can be opened.

[0025] Thus, when the water in the stratification tube 501 increases and the organic matter floating layer becomes thinner, the infrared sensor 7 will be triggered, thereby activating the electric valve 8 to release the water in the stratification tube 501 from the bottom until the organic matter floating layer blocks the infrared sensor 7 again, thus resetting it. In this way, the water level in the stratification tube 501 can be automatically maintained.

[0026] The condenser tube 1 includes an inner tube 101, an outer tube 102, a steam inlet 103, a steam outlet 104, a liquid inlet 105, and a liquid return port 106. The inner tube 101 is fixedly installed inside the outer tube 102, and a condensing chamber 107 is formed between the inner tube 101 and the outer tube 102. The steam inlet 103 is located at the bottom end of the inner tube 101 and is connected to the top end of the connecting pipe 503. The steam outlet 104 is located at the top end of the inner tube 101. The liquid inlet 105 and the liquid return port 106 are both installed on the outer tube 102 and are connected to the condensing chamber 107. At the same time, the ends of the liquid inlet 105 and the liquid return port 106 away from the condensing chamber 107 are connected to the liquid outlet and liquid inlet of an external coolant pump, respectively.

[0027] Therefore, the complete operating procedure is as follows: First, add the reactants (such as α-bromo-2,4-dichloroacetophenone, 1,2-propanediol, etc.) and catalyst (such as p-toluenesulfonic acid) to the reaction vessel 2, then add an appropriate amount of solvent (such as toluene or cyclohexane). Afterward, the heating platform 3 can be started to heat the reaction vessel 2. During the heating process, the vapors of the solvent and water will be sent through the steam pipe 6 into the connecting pipe 503, and then into the inner tube 101 of the condenser 1. Before this, the outlet end of the external coolant pump and the inlet end need to be connected... The liquid end is connected to the liquid inlet 105 and the liquid return port 106 respectively, and the external coolant pump is started to circulate the coolant into the condensation chamber 107. At this time, when the water vapor and solvent vapor in the inner tube 101 come into contact with the wall of the inner tube 101, the heat will be carried away by the coolant, thus condensing into liquid and flowing to the connecting pipe 503, and finally flowing into the stratification pipe 501 through the buffer pipe 502. Then, due to the difference in density, the water will sink, and the organic matter will float and flow back into the reactor 2 through the return pipe 504. In this way, the entire reaction is completed.

[0028] It should be noted that the steam outlet 104 at the top of the condenser tube 1 needs to be covered with a balloon to prevent gas from escaping and excessive pressure in the condenser tube 1.

[0029] During the reaction, when the water in the stratification tube 501 increases and the organic matter floating layer becomes thinner, the infrared sensor 7 will be triggered, thereby activating the electric valve 8 to release the water in the stratification tube 501 from the bottom until the organic matter floating layer blocks the infrared sensor 7 again, thus resetting it. In this way, the water level in the stratification tube 501 can be automatically maintained, which greatly facilitates the work of the operators.

[0030] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. 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. A reflux reaction apparatus for the safe cyclization reaction of difenoconazole, comprising a condenser (1), a reaction vessel (2), a heating platform (3), and a support (4), wherein the condenser (1) and the heating platform (3) are fixedly mounted on the support (4), and the reaction vessel (2) is mounted on the heating platform (3), characterized in that: It also includes a water distribution pipe (5), which includes a layered pipe (501), a buffer pipe (502), and a connecting pipe (503). The buffer pipe (502) is arc-shaped and its top end is connected to the connecting pipe (503), and its bottom end is connected to the middle of the layered pipe (501). The top end of the connecting pipe (503) is connected to the bottom end of the condenser pipe (1).

2. The reflux reaction apparatus for the safe cyclization reaction of difenoconazole according to claim 1, characterized in that: It also includes a steam pipe (6), one end of which is connected to the reactor (2), and the other end is connected to the connecting pipe (503).

3. The reflux reaction apparatus for the safe cyclization reaction of difenoconazole according to claim 2, characterized in that: The water distribution pipe (5) also includes a return pipe (504), which is connected to the top of the layered pipe (501), and the end of the return pipe (504) away from the layered pipe (501) is connected to the steam transmission pipe (6).

4. The reflux water-carrying reaction apparatus for the safe cyclization reaction of difenoconazole according to claim 3, characterized in that: The end of the return pipe (504) away from the layered pipe (501) is lower than or equal to the top of the layered pipe (501).

5. The reflux reaction apparatus for the safe cyclization reaction of phenylethyl benzoate according to claim 1, characterized in that: It also includes an infrared sensor (7) and an electric valve (8). The infrared sensor (7) is fixedly sleeved on the upper layer of the layered tube (501), and the infrared sensor (7) is level with the organic liquid level in the layered tube (501). The electric valve (8) is electrically connected to the infrared sensor (7), and when the infrared sensor (7) is triggered, the electric valve (8) can be activated to open.

6. The reflux reaction apparatus for the safe cyclization reaction of difenoconazole according to claim 1, characterized in that: The condenser tube (1) includes an inner tube (101) and an outer tube (102). The inner tube (101) is fixedly installed inside the outer tube (102), and a condensation chamber (107) is formed between the inner tube (101) and the outer tube (102). The bottom end of the inner tube (101) is connected to the connecting pipe.

7. The reflux reaction apparatus for the safe cyclization reaction of phenylethyl benzoate according to claim 6, characterized in that: The condenser tube (1) also includes a steam inlet (103) and a steam outlet (104). The steam inlet (103) is located at the bottom end of the inner tube (101) and is connected to the top end of the connecting tube (503). The steam outlet (104) is located at the top end of the inner tube (101).

8. The reflux reaction apparatus for the safe cyclization reaction of phenylethyl benzoate according to claim 7, characterized in that: The condenser tube (1) also includes an inlet (105) and a return port (106). The inlet (105) and the return port (106) are connected to the condenser chamber (107). At the same time, the ends of the inlet (105) and the return port (106) away from the condenser chamber (107) are connected to the outlet and inlet of the external coolant pump, respectively.

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