CN219376822U - Acrylic acid blending equipment for synthesizing acrylic acid hydroxy ester - Google Patents
Acrylic acid blending equipment for synthesizing acrylic acid hydroxy ester Download PDFInfo
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- CN219376822U CN219376822U CN202320472559.9U CN202320472559U CN219376822U CN 219376822 U CN219376822 U CN 219376822U CN 202320472559 U CN202320472559 U CN 202320472559U CN 219376822 U CN219376822 U CN 219376822U
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Abstract
An acrylic acid blending device for synthesizing acrylic acid hydroxy ester belongs to the technical field of material mixing equipment. Including the allotment jar that has the stirring rake, its characterized in that: the air bubble distributor is arranged in the blending tank and is connected with a residual air recycling pipeline; the material inlet of the blending tank is connected with the acrylic acid constant volume tank at a high position through a pipeline, and the blending material outlet of the blending tank is connected with a metering tank through a pipeline. The utility model can finish the constant-volume delivery of the acrylic acid without calculating the material for each time, thereby improving the production efficiency. The excessive ethylene oxide separated by the evaporator is absorbed by acrylic acid in the blending tank, so that the waste of materials is avoided. The prepared acrylic acid is put into a metering tank for temporary storage, temporary material preparation is not needed before each synthesis, the prepared acrylic acid is taken along with use, and the production efficiency is improved.
Description
Technical Field
An acrylic acid blending device for synthesizing acrylic acid hydroxy ester belongs to the technical field of material mixing equipment.
Background
1. In the process for synthesizing the hydroxyl acrylate, the acrylic acid needs to be prepared before the synthesis reaction, and a proper amount of polymerization inhibitor and catalyst are added. At present, the preparation of the acrylic acid needs to be measured each time, and a polymerization inhibitor and a catalyst with the proportion are added after calculation, so that the problem of low working efficiency exists.
2. In order to improve the conversion rate of acrylic acid in the process of synthesizing the hydroxyl acrylate, usually, excess ethylene oxide is introduced, after the synthesis reaction, the ethylene oxide in the crude product needs to be recovered by an evaporator, and if the recovered ethylene oxide is refined and purified, the heat energy and equipment support are required to be increased. It is common practice to burn with an incineration torch, which undoubtedly brings about waste of material.
3. In the synthesis of hydroxyl acrylate, the preparation of acrylic acid is mostly carried out temporarily before feeding, and long preparation time is needed from weighing to feeding, stirring and feeding, so that the overall production efficiency is seriously affected.
Disclosure of Invention
The utility model aims to solve the technical problems that: overcomes the defects of the prior art and provides acrylic acid blending equipment for synthesizing hydroxyl acrylate, which realizes quantitative feeding and effective recovery of ethylene oxide.
The technical scheme adopted for solving the technical problems is as follows: the acrylic acid blending equipment for synthesizing the acrylic acid hydroxyl ester comprises a blending tank with a stirring paddle, and is characterized in that: the air bubble distributor is arranged in the blending tank and is connected with a residual air recycling pipeline; the material inlet of the blending tank is connected with the acrylic acid constant volume tank at a high position through a pipeline, and the blending material outlet of the blending tank is connected with a metering tank through a pipeline.
According to the utility model, the acrylic acid constant volume tank is arranged at the high position of the blending tank, and quantitative polymerization inhibitor and catalyst can be put into the blending tank only by simply filling the constant volume tank every time, so that calculation of each time of feeding is not needed, and the production efficiency is improved. According to the utility model, the bubble distributor is arranged at the bottom of the blending tank, and the residual air recovery pipeline guides the excessive ethylene oxide separated by the evaporator into the blending tank for absorption by acrylic acid, so that material waste is avoided. Because the acrylic acid and the auxiliary agent are quantitatively put in the acrylic acid constant volume tank, the metering and the blending of the acrylic acid are not affected. The prepared acrylic acid is put into a metering tank for temporary storage, temporary material preparation is not needed before each synthesis, the prepared acrylic acid is taken along with use, and the production efficiency is improved.
Specifically, in the acrylic acid blending equipment for synthesizing the acrylic acid hydroxyl ester, a polymerization inhibitor feed inlet and a catalyst feed inlet are arranged on a pipeline connecting the blending tank and the acrylic acid constant volume tank. When the polymerization inhibitor and the catalyst for acid preparation are discharged in the acrylic acid constant volume tank, the polymerization inhibitor and the catalyst are directly added from a polymerization inhibitor feeding port and a catalyst feeding port, the tank opening and the feeding are not needed, and the production safety is improved. The polymerization inhibitor feed inlet and the catalyst feed inlet are provided with Venturi feeders.
Specifically, in the acrylic acid blending equipment for synthesizing the hydroxyl acrylate, the stirring paddles are upper, middle and lower layers, and the lengths of the stirring paddles of the upper layer and the lower layer are larger than that of the stirring paddles of the middle layer. The length of stirring rake is unequal, carries out the stirring of different degree to not co-altitude, can strengthen the upper and lower convection current of acrylic acid, improves stirring efficiency.
Specifically, in the acrylic acid blending equipment for synthesizing the acrylic acid hydroxyl ester, the height of the blending discharge port is higher than that of the bubble distributor. The blending discharge port is higher than the bubble distributor, so that the acrylic acid in the blending tank is prevented from being completely emptied, the ethylene oxide filled at any time is ensured to be absorbed by the acrylic acid, and the generation of secondary waste gas is effectively reduced.
Specifically, in the acrylic acid blending equipment for synthesizing the acrylic acid hydroxyl ester, a material transferring pump is arranged on a pipeline connecting the blending discharging port and the metering tank. The material transfer pump is used as conveying power, so that the metering tank can be arranged near the esterification reactor, accumulation in a pipeline is reduced, and metering accuracy is ensured.
Specifically, in the acrylic acid blending equipment for synthesizing the acrylic acid hydroxyl ester, the liquid level meter is arranged on the metering tank, and the top of the liquid level meter is provided with the upper communicating pipe communicated with the top of the metering tank. Better guarantee the atmospheric pressure balance at top, make the level gauge reaction in time, guarantee the measurement accuracy.
Specifically, in the acrylic acid blending equipment for synthesizing the acrylic acid hydroxy ester, the upper part of the metering tank is provided with the sight glass. The liquid level of the metering tank can be timely observed, the tank overflow is avoided, and the acrylic acid injection is timely stopped before the liquid level reaches the upper communication port of the liquid level meter.
Specifically, in the acrylic acid blending equipment for synthesizing the acrylic acid hydroxyl ester, a metering discharge opening is formed in the lower portion of the metering tank, and the height of the metering discharge opening is higher than that of the lower communication opening of the liquid level meter and the metering tank. The metering discharge port is higher than the lower communication port, so that the liquid level meter is prevented from failing after the liquid level is too low, and the metering accuracy of feeding is ensured.
Compared with the prior art, the acrylic acid blending equipment for synthesizing the acrylic acid hydroxy ester has the beneficial effects that: according to the utility model, the acrylic acid constant volume tank is arranged at the high position of the blending tank, and quantitative polymerization inhibitor and catalyst can be put into the blending tank only by simply filling the constant volume tank every time, so that calculation of each time of feeding is not needed, and the production efficiency is improved. According to the utility model, the bubble distributor is arranged at the bottom of the blending tank, the excess ethylene oxide separated by the evaporator is led into the blending tank by the residual air recycling pipeline to be absorbed by acrylic acid, so that material waste is avoided, the blending discharge port is higher than the bubble distributor, the acrylic acid in the blending tank is prevented from being completely emptied, the ethylene oxide filled at any time is ensured to be absorbed by the acrylic acid, and the generation of secondary waste gas is effectively reduced. The prepared acrylic acid is put into a metering tank for temporary storage, temporary material preparation is not needed before each synthesis, the prepared acrylic acid is taken along with use, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of an acrylic acid compounding apparatus for synthesizing hydroxy acrylate according to the present utility model.
FIG. 2 is a schematic view of a metering tank of an acrylic acid blending device for synthesizing hydroxyl acrylate according to the present utility model.
In the figure, 1, a blending tank 2, a residual gas recycling pipeline 3, a stirring paddle 4, a bubble distributor 5, a blending discharge port 6, a transfer pump 7, a metering tank 701, a metering discharge port 702, a sight glass 8, a liquid level meter 801, an upper communicating pipe 9, an acrylic acid constant volume tank 10, a polymerization inhibitor charging port 11 and a catalyst charging port.
Detailed Description
Fig. 1 and 2 are preferred embodiments of the present utility model, and the present utility model will be further described with reference to fig. 1 and 2.
Referring to fig. 1 and 2: the utility model relates to acrylic acid blending equipment for synthesizing acrylic acid hydroxyl ester, which comprises a blending tank 1 with a stirring paddle 3, wherein the stirring paddle 3 of the blending tank 1 is of an upper layer, a middle layer and a lower layer, the length of the stirring paddle 3 of the upper layer and the lower layer is longer than that of the stirring paddle 3 of the middle layer, different heights are stirred to different degrees, and the up-down convection of acrylic acid is enhanced. A bubble distributor 4 is arranged in the blending tank 1, the bubble distributor 4 is connected with a recycling residual air pipeline 2, and the recycling residual air pipeline 2 introduces excessive ethylene oxide separated by an evaporator into the blending tank 1, and acrylic acid is emitted from the bubble distributor 4 for absorption; the material inlet of the blending tank 1 is connected with an acrylic acid constant volume tank 9 arranged at a high position through a pipeline, a polymerization inhibitor feed inlet 10 and a catalyst feed inlet 11 are arranged on the pipeline connecting the blending tank 1 and the acrylic acid constant volume tank 9, and the polymerization inhibitor feed inlet 10 and the catalyst feed inlet 11 are respectively provided with a Venturi material feeder, so that quantitative polymerization inhibitor and catalyst can be directly fed in during material feeding only by simply filling the acrylic acid constant volume tank 9; the mixing discharge port 5 of the mixing tank 1 is connected with a metering tank 7 through a pipeline, and the mixed acrylic acid is put into the metering tank 7 for temporary storage, so that the purpose of taking along with use is realized.
The height of the blending discharge port 5 is higher than that of the bubble distributor 4, so that the acrylic acid in the blending tank 1 is prevented from being completely emptied, and the filled ethylene oxide can be absorbed by the acrylic acid at any time; the pipeline connecting the blending discharge port 5 and the metering tank 7 is provided with a material transfer pump 6, and the metering tank 7 is arranged near the esterification reactor to reduce accumulation in the pipeline. The liquid level meter 8 is arranged on the metering tank 7, and an upper communicating pipe 801 communicated with the top of the metering tank 7 is arranged at the top of the liquid level meter 8, so that the air pressure balance at the top is ensured; the upper part of the metering tank 7 is provided with a sight glass for timely observing the liquid level of the metering tank 7; the height of the metering discharge port 701 of the metering tank 7 is higher than the lower communication port of the liquid level meter 8 and the metering tank 7, so that the liquid level meter 8 is prevented from being invalid after the liquid level is too low, and the metering accuracy of feeding is ensured.
The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.
Claims (8)
1. Acrylic acid blending equipment for synthesizing acrylic acid hydroxy ester comprises a blending tank (1) with a stirring paddle (3), and is characterized in that: a bubble distributor (4) is arranged in the blending tank (1), and the bubble distributor (4) is connected with a residual air recycling pipeline (2); the material inlet of the blending tank (1) is connected with an acrylic acid constant volume tank (9) arranged at a high position through a pipeline, and the material outlet (5) of the blending tank (1) is connected with a metering tank (7) through a pipeline.
2. The acrylic acid blending device for synthesizing acrylic acid hydroxy ester according to claim 1, wherein: a polymerization inhibitor feed inlet (10) and a catalyst feed inlet (11) are arranged on a pipeline connecting the blending tank (1) and the acrylic acid constant volume tank (9).
3. The acrylic acid blending device for synthesizing acrylic acid hydroxy ester according to claim 1, wherein: the stirring paddles (3) are upper, middle and lower layers, and the length of the stirring paddles (3) on the upper layer and the lower layer is greater than that of the stirring paddles (3) on the middle layer.
4. The acrylic acid blending device for synthesizing acrylic acid hydroxy ester according to claim 1, wherein: the height of the blending discharging hole (5) is higher than that of the bubble distributor (4).
5. The acrylic acid blending device for synthesizing acrylic acid hydroxy ester according to claim 1, wherein: a material transferring pump (6) is arranged on a pipeline connecting the blending discharging port (5) and the metering tank (7).
6. The acrylic acid blending device for synthesizing acrylic acid hydroxy ester according to claim 1, wherein: the metering tank (7) is provided with a liquid level meter (8), and the top of the liquid level meter (8) is provided with an upper communicating pipe (801) communicated with the top of the metering tank (7).
7. An acrylic acid compounding apparatus for hydroxy acrylate synthesis according to claim 1 or 6, wherein: the upper part of the metering tank (7) is provided with a sight glass.
8. The acrylic acid blending apparatus for synthesizing acrylic acid hydroxy ester according to claim 6, wherein: the lower part of the metering tank (7) is provided with a metering discharge port (701), and the height of the metering discharge port (701) is higher than the lower communication port of the liquid level meter (8) and the metering tank (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320472559.9U CN219376822U (en) | 2023-03-09 | 2023-03-09 | Acrylic acid blending equipment for synthesizing acrylic acid hydroxy ester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320472559.9U CN219376822U (en) | 2023-03-09 | 2023-03-09 | Acrylic acid blending equipment for synthesizing acrylic acid hydroxy ester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219376822U true CN219376822U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320472559.9U Active CN219376822U (en) | 2023-03-09 | 2023-03-09 | Acrylic acid blending equipment for synthesizing acrylic acid hydroxy ester |
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| Country | Link |
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| CN (1) | CN219376822U (en) |
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2023
- 2023-03-09 CN CN202320472559.9U patent/CN219376822U/en active Active
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