Methanol distillation device for preparing ethyl 2-vinyloxyethoxy acrylate

Abstract

The utility model discloses a methanol distillation device for preparing ethyl 2-vinyloxyethoxy acrylate, which comprises a reaction kettle, a distiller, a condenser, a first pipe body, a second pipe body and a methanol receiving tank, an auxiliary pipe body used for inputting a polymerization inhibitor for preventing polymerization with filler of the reaction kettle is arranged in the distiller, an air input pipe body used for inputting air for inhibiting polymerization is arranged in the reaction kettle, one end of the first pipe body is connected with an output port of the distiller, and the other end of the first pipe body is connected with an input port of the condenser; one end of the second pipe body is connected with the output port of the condenser, and the input port of the methanol receiving tank is connected with the other end of the second pipe body. According to the mode, methanol can be distilled out, so that the methanol generated in the reaction can be recycled, the phenomenon that methanol-containing wastewater cannot be treated due to the generation of the methanol-containing wastewater is avoided, and the methanol distillation device is energy-saving and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of preparation of 2-vinyloxyethoxyethyl acrylate, in particular to a methanol distillation device 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, which is not environmentally friendly. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a methanol distillation device for preparing 2-vinyloxyethoxyethyl acrylate, which can solve the above technical problems.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a methanol distillation device for preparing 2-vinyloxyethoxy ethyl acrylate, comprising a reactor, a distiller and a condenser arranged at the top of the reactor, wherein the input port of the distiller is connected to the output port at the top of the reactor, the distiller is provided with an auxiliary pipe body for inputting a polymerization inhibitor for preventing polymerization with the filler of the reactor, one end of the auxiliary pipe body is located in the top of the distiller, one end of the auxiliary pipe body is provided with an atomizing nozzle, and the auxiliary pipe body is provided with a nozzle for controlling the auxiliary pipe body. A first switch valve for assisting the on-off of the tube body, the reactor is provided with an air input tube body for inputting air to inhibit polymerization, the air input tube body is provided with a second switch valve for controlling the on-off of the air input tube body, characterized in that it also includes: a first tube body, one end of which is connected to the output port at the top of the distiller, and the other end of which is connected to the input port of the condenser; a second tube body, one end of which is connected to the output port of the condenser, wherein the second tube body is provided with a third switch valve for controlling the on-off of the second tube body; a methanol receiving tank, whose input port is connected to the other end of the second tube body.

[0008] Furthermore, a one-way valve is provided in the first tube body to allow the water in the distiller to flow into the condenser.

[0009] (III) Beneficial effects

[0010] Compared with the prior art, the utility model provides a methanol distillation device for preparing 2-vinyloxyethoxy ethyl acrylate, which has the following beneficial effects: the methanol distillation device for preparing 2-vinyloxyethoxy ethyl acrylate disclosed in the utility model comprises a reactor, a distiller, a condenser, a first tube body, a second tube body and a methanol receiving tank, wherein the input port of the distiller is connected to the output port at the top of the reactor, the distiller is provided with an auxiliary tube body for inputting a polymerization inhibitor for preventing polymerization with the filler of the reactor, the reactor is provided with an air input tube body for inputting air for polymerization inhibition, one end of the first tube body is connected to the output port of the distiller, the other end of the first tube body is connected to the input port of the condenser, one end of the second tube body is connected to the output port of the condenser, and the input port of the methanol receiving tank is connected to the other end of the second tube body. In the above manner, the utility model can distill the methanol in the reactor through the distiller, so that the methanol produced in the reaction can be recycled and reused, and the phenomenon of the generation of methanol-containing wastewater that cannot be treated is avoided, which is energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic structural diagram of an embodiment of a methanol distillation device for preparing 2-vinyloxyethoxyethyl acrylate according to the utility model;

[0012] Figure 2 The utility model is a schematic structural diagram of another embodiment of a methanol distillation device for preparing ethyl 2-vinyloxyethoxyacrylate. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figure 1 The methanol distillation device for preparing 2-vinyloxyethoxyethyl acrylate disclosed in the utility model comprises a reaction kettle 10, a distiller 11 arranged at the top of the reaction kettle 10, a condenser 12, a first tube body 13, a second tube body 14 and a methanol receiving tank 15.

[0015] In this embodiment, the input port of the distiller 11 is connected to the output port at the top of the reactor 10, so that the water vapor containing methanol in the reactor 10 enters the distiller 11 for distillation.

[0016] Furthermore, the distiller 11 is provided with an auxiliary pipe body 111 for inputting a polymerization inhibitor for preventing polymerization with the filler of the reactor 10 . That is, in order to prevent polymerization, the polymerization inhibitor for preventing polymerization with the filler of the reactor 10 is input through the auxiliary pipe body 111 .

[0017] Preferably, one end of the auxiliary tube body 111 is located in the top end of the distiller 11, wherein an atomizing nozzle is provided at one end of the auxiliary tube body 111 to spray out the atomized inhibitor for better effect.

[0018] Preferably, a first switch valve 112 for controlling the on-off of the auxiliary tube body 111 is provided in the auxiliary tube body 111 .

[0019] In this embodiment, the reactor 10 is provided with an air input pipe 101 for inputting air to inhibit polymerization, wherein the air input pipe 101 is provided with a second switch valve 102 for controlling the on-off of the air input pipe 101 .

[0020] It is worth noting that the reactor 10, distiller 11 and condenser 12 of this embodiment can be implemented using products in the prior art, and their principles and structures are not described here one by one. The principle and structure of the distiller 11 being set at the top of the reactor 10 can also be implemented using the prior art.

[0021] One end of the first tube body 13 is connected to the output port at the top of the distiller 11, and the other end of the first tube body 13 is connected to the input port of the condenser 12, so that the water vapor distilled by the distiller 11 enters the condenser 12 through the first tube body 13. It should be understood that the water vapor distilled by the distiller 11 is methanol water vapor, so it will condense into water after entering the condenser 12.

[0022] In this embodiment, a one-way valve 131 is provided in the first tube 13 to allow the water in the distiller 11 to flow into the condenser 12. In other words, the condensed water in the condenser 12 cannot flow back into the distiller 11.

[0023] One end of the second tube body 14 is connected to the output port of the condenser 12 , wherein a third switch valve 141 for controlling the on / off of the second tube body 14 is disposed in the second tube body 14 .

[0024] The input port of the methanol receiving tank 15 is connected to the other end of the second tube body 14 , so that the methanol water condensed by the condenser 12 enters the methanol receiving tank 15 through the second tube body 14 .

[0025] It should be understood that in this embodiment, the methanol in the reactor 10 can be distilled out by the distiller 11, cooled by the condenser 12 and transported to the methanol receiving tank 15, so that the methanol produced in the reaction can be recovered and reused, and the generation of methanol-containing wastewater that cannot be treated is avoided, which is energy-saving, environmentally friendly and relatively safe.

[0026] Specific working principle:

[0027] When preparing 2-vinyloxyethoxyethyl acrylate, methyl acrylate and diethylene glycol vinyl ether are used to carry out an ester exchange reaction in a reactor 10, and the methanol generated by the reaction of the entrainer with the methanol forms an azeotrope (water vapor) and flows to a distiller 11 for distillation, and the distilled water vapor (containing methanol with relatively high purity) enters a condenser 12 for condensation to form condensed water methanol, and the methanol water is discharged through a second tube 14 to a methanol receiving tank 15 for recovery and can be reused.

[0028] Further references Figure 2 In other embodiments, the methanol distillation apparatus for preparing 2-vinyloxyethoxyethyl acrylate further includes a third tube body 21 , an extraction centrifuge 22 and a product tank 23 .

[0029] One end of the third tube body 21 is connected to the output port of the condenser 12, and the other end of the third tube body 21 is connected to the input port of the extraction centrifuge 22, so that the condensed water in the condenser 12 is transported to the extraction centrifuge 22 through the third tube body 21, and the input port of the product tank 23 is connected to the output port of the extraction centrifuge 22 through the fourth tube body 24, so that the lower layer liquid of the extraction centrifuge 12 is discharged into the product tank 23, wherein the lower layer liquid includes methanol water with higher purity.

[0030] Preferably, a fourth switch valve 211 for controlling the on-off of the third tube body 21 is disposed in the third tube body 21 .

[0031] It should be understood that in this embodiment, the condensed water of the condenser 12 can be controlled to enter the methanol receiving tank 15 by controlling the on-off of the third switch valve 141. In order to obtain methanol with higher purity, the condensed water of the condenser 12 can also be controlled to enter the extraction centrifuge 22 for separation by controlling the on-off of the fourth switch valve 211 to obtain methanol water with higher purity.

[0032] In addition, the stripping centrifuge 22 of this embodiment can be implemented by using products in the prior art, and its principle and structure are not described in detail here.

[0033] 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.

[0034] 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 methanol distillation device for preparing 2-vinyloxyethoxyethyl acrylate, comprising a reactor, a distiller and a condenser arranged at the top of the reactor, wherein the input port of the distiller is connected to the output port at the top of the reactor, the distiller is provided with an auxiliary pipe body for inputting a polymerization inhibitor to prevent polymerization with the filler of the reactor, one end of the auxiliary pipe body is located in the top of the distiller, one end of the auxiliary pipe body is provided with an atomizing nozzle, the auxiliary pipe body is provided with a first switch valve for controlling the on-off of the auxiliary pipe body, the reactor is provided with an air input pipe body for inputting air to inhibit polymerization, the air input pipe body is provided with a second switch valve for controlling the on-off of the air input pipe body, characterized in that: Also includes: A first tube body, one end of which is connected to the output port at the top of the distiller, and the other end of which is connected to the input port of the condenser; A second tube body, one end of which is connected to the output port of the condenser, wherein the second tube body is provided with a third switch valve for controlling the on and off of the second tube body; The methanol receiving tank has an input port connected to the other end of the second pipe body.

2. The methanol distillation apparatus for preparing 2-vinyloxyethoxyethyl acrylate according to claim 1, characterized in that: The first pipe body is provided with a one-way valve which allows the water in the distiller to flow into the condenser.

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