System for preparing ethyl 2-vinyloxyethoxy acrylate

Abstract

The invention discloses a system for preparing ethyl 2-vinyloxyethoxy acrylate. The system comprises: a reaction kettle; the distiller is used for distilling the methanol output from the reaction kettle; the condenser is used for condensing methanol to obtain methanol condensate water; a controller; the first methanol receiving tank is used for receiving methanol condensate water output from the controller; the extraction centrifugal machine is used for extracting and separating the methanol condensate water output from the controller; the second methanol receiving tank is used for receiving subnatant of the extraction centrifuge; the controller comprises a control mechanism used for controlling connection of the second pipe body and the third pipe body or connection and disconnection of the fourth pipe body. Through the mode, methanol can be distilled out, methanol generated in the reaction can be recycled, the phenomenon that methanol-containing wastewater cannot be treated due to generation is avoided, energy is saved, environment friendliness is achieved, meanwhile, methanol with different purities can be output according to needs, and flexibility is high.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of 2-vinyloxyethoxyethyl acrylate, in particular to a system for preparing 2-vinyloxyethoxyethyl acrylate. Background Art

[0002] 2-vinyloxyethoxyethyl acrylate (VEEA) is a bifunctional special UV acrylate containing ether bonds and ester bonds in its structure. It has low viscosity and good compatibility with polymers. At the same time, due to its two functionalities, it has the characteristics of rapid reaction and curing. It is widely used in coatings, inks and adhesives. At present, the method for preparing 2-vinyloxyethoxyethyl acrylate on the market is to use methyl acrylate and diethylene glycol vinyl ether for ester exchange reaction, and use cyclohexane solvent to azeotropically remove methanol to make the reaction proceed in the forward direction.

[0003] However, the methanol water brought out is treated as wastewater and cannot be discharged. On the one hand, methanol will be directly discharged, which is too wasteful. On the other hand, it is easy to cause certain pollution to the environment and is not environmentally friendly. Even if the methanol can be recovered, the purity of the recovered methanol is not high, it cannot be classified, and the flexibility is extremely poor. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a system for preparing 2-vinyloxyethoxyethyl acrylate, which can solve the above technical problems.

[0006] (II) Technical solution

[0007] To solve the above technical problems, the present invention provides the following technical solutions: A system for preparing 2-vinyloxyethoxyethyl acrylate, characterized in that it comprises: a reactor; a distiller, arranged at the top of the reactor, for distilling methanol output from the reactor; a first tube body, one end of which is connected to the output port of the distiller; a condenser, an input port of which is connected to the other end of the first tube body, for condensing the methanol output from the distiller to obtain methanol condensed water; a second tube body, one end of which is connected to the output port of the condenser; a controller, an input port of which is connected to the other end of the second tube body, wherein the controller is provided with a first output port and a second output port; a third tube body, one end of which is connected to the first output port of the controller; a first methanol receiving tank, an input port of which is connected to the other end of the third tube body, for condensing the methanol output from the distiller to obtain methanol condensed water. for receiving the methanol condensed water outputted from the controller; a fourth tube body, one end of which is connected to the second output port of the controller; an extraction centrifuge, an input port of which is connected to the other end of the fourth tube body, for obtaining the methanol condensed water outputted from the controller and extracting and separating the methanol condensed water; a fifth tube body, one end of which is connected to the output of the extraction centrifuge; a second methanol receiving tank, an input port of which is connected to the other end of the fifth tube body, for receiving the lower layer liquid of the extraction centrifuge, wherein the lower layer liquid comprises methanol water; wherein the controller comprises a control mechanism for controlling the second tube body to be conductive with the third tube body and at the same time making the second tube body non-conductive with the fourth tube body, and the control mechanism is used to control the second tube body to be non-conductive with the third tube body and at the same time making the second tube body conductive with the fourth tube body.

[0008] Furthermore, the controller is provided with a control interface for inputting a variety level. When it is detected that the user inputs a high variety level of methanol purity on the control interface, the control mechanism controls the second tube body to be connected to the fourth tube body, so that the methanol condensed water output from the controller enters the extraction centrifuge for extraction and separation, so as to finally receive the methanol water with high methanol purity through the second methanol receiving tank; when it is detected that the user inputs a low variety level of methanol purity on the control interface, the control mechanism controls the second tube body to be connected to the third tube body, so that the methanol condensed water output from the controller enters the first methanol receiving tank.

[0009] Furthermore, the third tube body is provided with a first switch valve for controlling the on / off of the third tube body and connected to the controller, and the fourth tube body is provided with a second switch valve for controlling the on / off of the fourth tube body and connected to the controller, wherein when it is determined that the control mechanism controls the second tube body to be connected to the fourth tube body, the controller controls the second switch valve to open so that the methanol condensed water output from the controller enters the extraction centrifuge through the fourth tube body; when it is determined that the control mechanism controls the second tube body to be connected to the third tube body, the controller controls the first switch valve to open so that the methanol condensed water output from the controller enters the first methanol receiving tank through the third tube body.

[0010] Furthermore, the controller is electrically connected to the extraction centrifuge, wherein when it is determined that the control mechanism controls the second tube body to be connected to the fourth tube body, the controller controls the extraction centrifuge to start working.

[0011] (III) Beneficial effects

[0012] Compared with the prior art, the present invention provides a system for preparing 2-vinyloxyethoxy ethyl acrylate, which has the following beneficial effects: the system for preparing 2-vinyloxyethoxy ethyl acrylate disclosed in the present invention includes a reactor, a distiller, a first tube, a condenser, a second tube, a controller, a third tube, a first methanol receiving tank, a fourth tube, an extraction centrifuge, a fifth tube, and a second methanol receiving tank, wherein the controller includes a control mechanism for controlling the second tube to be connected to the third tube and making the second tube and the fourth tube non-conductive, and a control mechanism for controlling the second tube to be non-conductive to the third tube and making the second tube and the fourth tube conductive. Through the above method, the present invention can distill methanol, so that the methanol produced in the reaction can be recycled and reused, avoiding the generation of methanol-containing wastewater that cannot be treated, energy saving and environmental protection, and can also switch to different recovery processes according to needs to output methanol of different purities, with high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The schematic diagram of the structure of the system for preparing 2-vinyloxyethoxy ethyl acrylate of the present invention is shown in FIG. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] like Figure 1 The system for preparing 2-vinyloxyethoxy ethyl acrylate disclosed in the present invention includes a reaction kettle 10, a distiller 11, a first pipe body 12, a condenser 13, a second pipe body 14, a controller 15, a third pipe body 16, a first methanol receiving tank 17, a fourth pipe body 18, an extraction centrifuge 19, a fifth pipe body 20 and a second methanol receiving tank 21.

[0016] The distiller 11 is disposed at the top of the reactor 10 and is used to distill the methanol output from the reactor 10. That is, the distiller 11 can distill the methanol output from the top of the reactor 10.

[0017] One end of the first tube body 12 is connected to the output port of the distiller 11 .

[0018] The input port of the condenser 13 is connected to the other end of the first tube body 11, and is used to condense the methanol output from the distiller 11 to obtain methanol condensed water. In other words, the condenser 13 can condense the methanol output from the distiller 11 to obtain methanol condensed water.

[0019] One end of the second tube 14 is connected to the output port of the condenser 13 .

[0020] The input port of the controller 15 is connected to the other end of the second tube body 14 , wherein the controller 15 is provided with a first output port and a second output port. It should be understood that the methanol condensed water output by the condenser 13 enters the controller 15 through the second tube body 14 .

[0021] One end of the third tube 16 is connected to the first output port of the controller 15 .

[0022] The input port of the first methanol receiving tank 17 is connected to the other end of the third pipe body 16 for receiving the methanol condensed water outputted from the controller 15 .

[0023] That is to say, the present application can distill methanol through the distiller 11, so that the methanol produced in the reaction is recovered into the first methanol receiving tank 17, which can be recycled and reused, avoiding the generation of methanol-containing wastewater that cannot be treated, which is energy-saving and environmentally friendly.

[0024] One end of the fourth tube 18 is connected to the second output port of the controller 15 .

[0025] The input port of the extraction centrifuge 19 is connected to the other end of the fourth tube body 18, and is used to obtain the methanol condensed water output from the controller 15 and extract and separate the methanol condensed water.

[0026] One end of the fifth tube 20 is connected to the output of the extraction centrifuge 19 .

[0027] The input port of the second methanol receiving tank 21 is connected to the other end of the fifth pipe body 20, and is used to receive the lower layer liquid of the extraction centrifuge 19, wherein the lower layer liquid includes methanol water. It should be understood that after extraction by the extraction centrifuge 19, the solution will be divided into an upper layer and a lower layer, and the upper layer liquid includes oil phase cyclohexane and methyl acrylate, and the lower layer liquid includes methanol water.

[0028] That is to say, the present application can also use the extraction centrifuge 19 to re-extract and separate the methanol water distilled from the distiller 11, so that methanol water with a higher methanol concentration can be separated.

[0029] In this embodiment, the controller 15 includes a control mechanism for controlling the second tube body 14 and the third tube body 16 to be conductive and at the same time making the second tube body 14 and the fourth tube body 18 non-conductive, that is, the control mechanism can only control one tube body to be connected to the second tube body 14, that is, when the control mechanism controls the second tube body 14 and the third tube body 16 to be conductive, it also controls the second tube body 14 and the fourth tube body 18 to be non-conductive.

[0030] Further, the control mechanism is used to control the second tube body 14 and the third tube body 16 to be disconnected and simultaneously connect the second tube body 14 and the fourth tube body 18, that is, when the control mechanism controls the second tube body 14 and the third tube body 16 to be disconnected, it also controls the second tube body 14 and the fourth tube body 18 to be connected.

[0031] That is to say, in this embodiment, the controller 15 can be used to control the connection between the second tube 14 and the third tube 16 or the fourth tube 18 as needed, so that different recovery processes can be switched to output methanol of different purities as needed, which has high flexibility.

[0032] In this embodiment, the controller 15 is provided with a control interface for inputting the grade of the product. When it is detected that the user inputs a high grade of methanol purity in the control interface, the control mechanism controls the second tube body 14 to be connected with the fourth tube body 18, so that the methanol condensed water output from the controller 15 enters the extraction centrifuge 19 for extraction and separation, so as to finally receive the methanol water with high methanol purity through the second methanol receiving tank 21.

[0033] Furthermore, when it is detected that the user inputs a low grade of methanol purity in the control interface, the control mechanism controls the second tube body 14 to be connected to the third tube body 16 , so that the methanol condensate output from the controller 15 enters the first methanol receiving tank 17 .

[0034] In this embodiment, the third tube body 16 is provided with a first switch valve 161 for controlling the on / off of the third tube body 16 and connected to the controller 15 , and the fourth tube body 18 is provided with a second switch valve 181 for controlling the on / off of the fourth tube body 18 and connected to the controller 15 .

[0035] Preferably, when it is determined that the control mechanism controls the second tube body 14 to be connected to the fourth tube body 18 , the controller 15 controls the second switch valve 181 to open, so that the methanol condensed water output from the controller 15 enters the extraction centrifuge 19 through the fourth tube body 18 .

[0036] Further, when it is determined that the control mechanism controls the second pipe body 14 to be connected to the third pipe body 16 , the controller 15 controls the first switch valve 161 to open, so that the methanol condensate output from the controller 15 enters the first methanol receiving tank 17 through the third pipe body 16 .

[0037] Furthermore, the controller 15 is electrically connected to the extraction centrifuge 19 , wherein when it is determined that the control mechanism controls the second tube body 14 to be connected to the fourth tube body 18 , the controller 15 controls the extraction centrifuge 19 to start working to extract and separate the methanol condensate outputted from the controller 15 .

[0038] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for preparing ethyl 2-vinyloxyethoxyacrylate, characterized in that: include: Reactor; a distiller, disposed at the top of the reactor, for distilling the methanol output from the reactor; A first tube body, one end of which is connected to the output port of the distiller; a condenser, whose input port is connected to the other end of the first tube body, and is used to condense the methanol output from the distiller to obtain methanol condensed water; A second tube body, one end of which is connected to the output port of the condenser; A controller, whose input port is connected to the other end of the second tube body, wherein the controller is provided with a first output port and a second output port; A third tube body, one end of which is connected to the first output port of the controller; A first methanol receiving tank, whose input port is connected to the other end of the third pipe body and is used to receive methanol condensed water output from the controller; a fourth tube body, one end of which is connected to the second output port of the controller; an extraction centrifuge, the input port of which is connected to the other end of the fourth tube body, for obtaining the methanol condensed water outputted from the controller and extracting and separating the methanol condensed water; a fifth tube body, one end of which is connected to the output of the extraction centrifuge; A second methanol receiving tank, the input port of which is connected to the other end of the fifth tube body and is used to receive the lower layer liquid of the extraction centrifuge, wherein the lower layer liquid includes methanol water; The controller includes a control mechanism for controlling the second tube body to be connected to the third tube body and simultaneously making the second tube body and the fourth tube body non-conductive, and the control mechanism is used to control the second tube body to be non-conductive to the third tube body and simultaneously making the second tube body and the fourth tube body conductive.

2. The system for preparing 2-vinyloxyethoxyethyl acrylate according to claim 1, characterized in that: The controller is provided with a control interface for inputting a grade of methanol. When it is detected that a user inputs a grade of methanol purity with a high grade on the control interface, the control mechanism controls the second tube body to be connected with the fourth tube body, so that the methanol condensed water output from the controller enters the extraction centrifuge for extraction and separation, so as to finally receive the methanol water with a high grade of methanol through the second methanol receiving tank; when it is detected that a user inputs a grade of methanol purity with a low grade on the control interface, the control mechanism controls the second tube body to be connected with the third tube body, so that the methanol condensed water output from the controller enters the first methanol receiving tank.

3. The system for preparing 2-vinyloxyethoxyethyl acrylate according to claim 2, characterized in that: The third tube body is provided with a first switch valve for controlling the on / off of the third tube body and connected to the controller, and the fourth tube body is provided with a second switch valve for controlling the on / off of the fourth tube body and connected to the controller, wherein when it is determined that the control mechanism controls the second tube body to be connected to the fourth tube body, the controller controls the second switch valve to open so that the methanol condensed water output from the controller enters the extraction centrifuge through the fourth tube body; when it is determined that the control mechanism controls the second tube body to be connected to the third tube body, the controller controls the first switch valve to open so that the methanol condensed water output from the controller enters the first methanol receiving tank through the third tube body.

4. The system for preparing 2-vinyloxyethoxyethyl acrylate according to claim 3, characterized in that: The controller is electrically connected to the extraction centrifuge, wherein when it is determined that the control mechanism controls the second tube body to be connected to the fourth tube body, the controller controls the extraction centrifuge to start working.

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