Rectification decolorization device based on ethyl phenylacetate

Abstract

The utility model discloses a rectification decoloring device based on ethyl phenylacetate, and relates to the technical field of rectification decoloring, and the rectification decoloring device based on ethyl phenylacetate comprises a rectification tower, and a blocking door plate is hinged to an opening in the front end of the rectification tower. Opening a valve above the second tee joint and a valve above the first tee joint, and closing a valve below the second tee joint and a valve below the first tee joint; steam generated by the evaporating tank passes through the activated carbon in the upper cavity of the rectifying tower; closing a valve above the second tee joint and a valve above the first tee joint, and opening a valve below the second tee joint and a valve below the first tee joint; the steam passes through the activated carbon in the lower cavity of the rectifying tower; the active carbon in the upper cavity and the lower cavity can be alternately used, so that the rectification work does not need to be stopped when the active carbon is replaced, and the rectification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rectification and decolorization, in particular to a rectification and decolorization device for ethyl phenylacetate based on it. Background Technique

[0002] Some impure ethyl phenylacetate is colored because other substances are mixed into the ethyl phenylacetate. Therefore, decolorization treatment is added during the rectification process.

[0003] The utility model patent with the publication number of CN213853150U discloses a rectification and decolorization device for ethyl phenylacetate based on toluene, including a heating box, a condensation box, a chiller, a rectification column, and a condensation chamber; one side of the heating box is communicated with an inflow pipe, a first carbon plate is fixed inside the heating box, the top of the heating box is communicated with a first conduit, the other end of the first conduit is communicated on the right side of the condensation box, and the left side of the condensation box is communicated with a second conduit; two support plates are fixed on the wall of the rectification column and arranged up and down, a packing plate is fixed on the support plate, and a second carbon plate is fixed on the top of the packing plate; the second conduit is communicated above the upper packing plate, the top of the rectification column is communicated with the condensation chamber, the condensation chamber is communicated with a reflux pipe, and the reflux pipe is communicated between the two packing plates; both the first carbon plate and the second carbon plate are plate-shaped activated carbon; a flanging is arranged at the bottom of the second carbon plate, and the flanging is clamped between the wall of the rectification column and the packing plate; a plurality of meandering condensation pipes are arranged inside the condensation box, and both ends of the condensation pipes are communicated inside the chiller; both the reflux pipe and the second conduit are inclined, and the outflow ports face downwards; a recovery box is arranged below the heating box, and the top of the recovery box is communicated with the bottom of the heating box.

[0004] The above patent has the following deficiencies:

[0005] The decolorization treatment is carried out through the first carbon plate and the second carbon plate arranged in the rectification column. However, when the carbon plates are replaced, the entire device needs to stop working for the replacement of the carbon plates. Therefore, the rectification work is discontinuous, resulting in low rectification efficiency. Stopping and restarting like this will cause energy waste and also increase emissions. Content of the Utility Model

[0006] In view of the problems existing in the existing rectification and decolorization device for ethyl phenylacetate based on it, the present utility model is proposed.

[0007] Therefore, the object of the present utility model is to provide a rectification and decolorization device for ethyl phenylacetate, which solves the problem that in the above-mentioned patent, the first carbon plate and the second carbon plate arranged in the rectification column are used for decolorization treatment. However, when the carbon plate is replaced, the entire device needs to stop working for carbon plate replacement, resulting in discontinuous rectification work, low rectification efficiency, waste of energy and increased emissions.

[0008] To solve the above technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

[0009] A rectification and decolorization device for ethyl phenylacetate, comprising a rectification column, and a sealing door plate is hinged at the front opening of the rectification column;

[0010] A partition plate that divides the inner cavity of the rectification column into an upper cavity and a lower cavity is fixedly arranged in the inner cavity of the rectification column, and decolorization structures are arranged in both the upper cavity and the lower cavity;

[0011] The rectification column is provided with a first inlet and a first outlet communicating with the upper cavity, and a second inlet and a second outlet communicating with the lower cavity.

[0012] As a preferred scheme of a rectification and decolorization device for ethyl phenylacetate according to the present utility model, further comprising an evaporation tank, the evaporation tank has a steam outlet, the steam outlet is connected to a first three-way valve, and both ends of the first three-way valve are respectively connected to the first inlet and the second inlet, and valves are installed at both ends of the first three-way valve.

[0013] As a preferred scheme of a rectification and decolorization device for ethyl phenylacetate according to the present utility model, further comprising a condensation kettle, a liquid discharge port is arranged at the bottom of the condensation kettle, the condensation kettle has a steam inlet, the end of the steam inlet is connected to a second three-way valve through a conduit, valves are installed at both ends of the second three-way valve, and both ends of the second three-way valve are respectively connected to the first outlet and the second outlet.

[0014] As a preferred scheme of a rectification and decolorization device for ethyl phenylacetate according to the present utility model, a condensation pipe is arranged in the condensation kettle, a pressure relief valve is installed at the top of the condensation kettle, and the left and right ends of the bottom of the condensation pipe are respectively arranged as a coolant outlet and a coolant inlet.

[0015] As a preferred scheme of a rectification and decolorization device for ethyl phenylacetate according to the present utility model, the decolorization structure includes filter plates fixed in the upper cavity and the lower cavity, a metal mesh is welded on the filter plates, the metal mesh is located at the front opening of the rectification column, and activated carbon is arranged on the filter plates.

[0016] As a preferred embodiment of the rectifying and decolorizing device based on ethyl phenylacetate of the present utility model, it further includes a stirring mechanism arranged on the top cover of the evaporation tank;

[0017] The stirring mechanism includes a motor fixed on the top cover of the evaporation tank. The output shaft of the motor is connected to a rotating shaft through a coupling, and a stirring rod is fixedly installed on the rotating shaft.

[0018] Compared with the prior art:

[0019] By arranging a partition plate in the rectifying column, the inner cavity of the rectifying column is divided into two cavities. Activated carbon is arranged in each cavity. By arranging a first inlet, a first outlet, a second inlet, and a second outlet on the rectifying column, opening the valves above the second three-way valve and the first three-way valve, and closing the valves below the second three-way valve and the first three-way valve; at this time, the steam generated by the evaporation tank passes through the activated carbon in the upper cavity of the rectifying column; closing the valves above the second three-way valve and the first three-way valve, and opening the valves below the second three-way valve and the first three-way valve; at this time, the steam passes through the activated carbon in the lower cavity of the rectifying column, so that the activated carbon in the upper and lower cavities can be used alternately. When replacing the activated carbon, the rectifying work does not need to stop, improving the rectifying efficiency, saving energy, and reducing emissions. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram provided by Embodiment 1 of the present utility model;

[0021] Figure 2 It is a cross-sectional view of the condensation kettle provided by Embodiment 1 of the present utility model;

[0022] Figure 3 It is a cross-sectional view of the rectifying column provided by Embodiment 1 of the present utility model;

[0023] Figure 4 It is a cross-sectional view of the evaporation tank provided by Embodiment 2 of the present utility model.

[0024] In the figure: condensation kettle 1, liquid discharge port 2, coolant outlet 3, coolant inlet 4, pressure relief valve 5, steam inlet 6, conduit 7, second three-way valve 8, rectifying column 9, plugging door panel 10, first outlet 11, second outlet 12, first inlet 13, second inlet 14, first three-way valve 15, steam outlet 16, evaporation tank 17, condensation pipe 18, filter plate 19, metal mesh 20, partition plate 21, motor 22, rotating shaft 23, stirring rod 24. Detailed Embodiments

[0025] To make the purpose, technical solutions, and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to the drawings.

[0026] Embodiment 1:

[0027] The utility model provides a rectifying and decolorizing device based on ethyl phenylacetate. Please refer to Figures 1-3 , which includes a rectifying column 9. At the front opening of the rectifying column 9, there are two hinged sealing door panels 10.

[0028] A partition plate 21 that divides the inner cavity of the rectifying column 9 into an upper cavity and a lower cavity is fixedly installed in the inner cavity of the rectifying column 9. The two sealing door panels 10 respectively block the opening ends of the upper cavity and the lower cavity, and a sealing ring is adhesively attached to the sealing door panels 10 to achieve sealing with the rectifying column 9. Decolorizing structures are arranged in both the upper cavity and the lower cavity.

[0029] The rectifying column 9 is provided with a first inlet 13 and a first outlet 11 communicating with the upper cavity, and a second inlet 14 and a second outlet 12 communicating with the lower cavity.

[0030] It further includes an evaporation tank 17. The evaporation tank 17 has a steam outlet 16. The steam outlet 16 is connected to a first three-way valve 15. The two ends of the first three-way valve 15 are respectively connected to the first inlet 13 and the second inlet 14, and valves are installed at both ends of the first three-way valve 15.

[0031] It further includes a condensation kettle 1. A liquid discharge port 2 is arranged at the bottom of the condensation kettle 1. The condensation kettle 1 has a steam inlet 6. The end of the steam inlet 6 is connected to a second three-way valve 8 through a conduit 7. Valves are installed at both ends of the second three-way valve 8, and the two ends of the second three-way valve 8 are respectively connected to the first outlet 11 and the second outlet 12.

[0032] Open the valve above the second three-way valve 8 and the valve above the first three-way valve 15, and close the valve below the second three-way valve 8 and the valve below the first three-way valve 15; at this time, the steam passes through the activated carbon in the upper cavity of the rectifying column 9. At the same time, close the valve above the second three-way valve 8 and the valve above the first three-way valve 15, and open the valve below the second three-way valve 8 and the valve below the first three-way valve 15; at this time, the steam passes through the activated carbon in the lower cavity of the rectifying column 9.

[0033] A condensation pipe 18 is arranged in the condensation kettle 1. A pressure relief valve 5 is installed at the top of the condensation kettle 1. The left and right ends at the bottom of the condensation pipe 18 are respectively set as a coolant outlet 3 and a coolant inlet 4.

[0034] The decolorizing structure includes filter plates 19 fixed in the upper cavity and the lower cavity. A metal mesh 20 is welded on the filter plates 19. The metal mesh 20 is located at the front opening of the rectifying column 9, and activated carbon is arranged on the filter plates 19.

[0035] During specific use, open the valve above the second three-way pipe 8 and the valve above the first three-way pipe 15, and close the valve below the second three-way pipe 8 and the valve below the first three-way pipe 15; at this time, the steam generated by the evaporation tank 17 passes through the activated carbon in the upper cavity of the rectification tower 9.

[0036] Close the valve above the second three-way pipe 8 and the valve above the first three-way pipe 15, and open the valve below the second three-way pipe 8 and the valve below the first three-way pipe 15; at this time, the steam passes through the activated carbon in the lower cavity of the rectification tower 9.

[0037] Embodiment 2:

[0038] Refer to the appendix Figure 4 , different from Embodiment 1: It further includes a stirring mechanism arranged on the top cover of the evaporation tank 17;

[0039] The stirring mechanism includes a motor 22 fixed on the top cover of the evaporation tank 17. The output shaft of the motor 22 is connected with a rotating shaft 23 through a coupling. A stirring rod 24 is fixedly installed on the rotating shaft 23; by driving the rotating shaft 23 and the stirring rod 24 to rotate through the motor 22, the material can be stirred, thereby accelerating evaporation.

[0040] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present invention can be combined with each other in any way. The exhaustive description of these combinations is omitted in this specification only for the sake of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rectification and decolorization device based on ethyl phenylacetate, comprising a rectification column (9), characterized in that: A sealing door panel (10) is hinged at the front end opening of the rectifying column (9); A partition plate (21) that divides the inner cavity of the rectifying column (9) into an upper cavity and a lower cavity is fixedly installed in the inner cavity of the rectifying column (9), and decolorizing structures are arranged in both the upper cavity and the lower cavity; The rectifying column (9) is provided with a first inlet (13) and a first outlet (11) communicating with the upper cavity, and a second inlet (14) and a second outlet (12) communicating with the lower cavity.

2. The rectifying and decolorizing device for ethyl phenylacetate according to claim 1, wherein, It further includes an evaporation tank (17). The evaporation tank (17) has a steam outlet (16). The steam outlet (16) is connected to a first three-way joint (15). The two ends of the first three-way joint (15) are respectively connected to the first inlet (13) and the second inlet (14), and valves are installed at both ends of the first three-way joint (15).

3. The rectification and decolorization device for ethyl phenylacetate according to claim 2, characterized in that, It further includes a condensation kettle (1). A liquid discharge port (2) is arranged at the bottom of the condensation kettle (1). The condensation kettle (1) has a steam inlet (6). The end of the steam inlet (6) is connected to a second three-way joint (8) through a conduit (7). Valves are installed at both ends of the second three-way joint (8). The two ends of the second three-way joint (8) are respectively connected to the first outlet (11) and the second outlet (12).

4. A rectification and decolorization device for ethyl phenylacetate according to claim 3, characterized in that, A condensation pipe (18) is arranged in the condensation kettle (1). A pressure relief valve (5) is installed at the top of the condensation kettle (1). The left and right ends at the bottom of the condensation pipe (18) are respectively set as a coolant outlet (3) and a coolant inlet (4).

5. An ethyl phenylacetate rectification and decolorization device according to claim 2 or 3 or 4, characterized in that, The decolorizing structure includes filter plates (19) fixed in the upper cavity and the lower cavity. A metal mesh (20) is welded on the filter plate (19). The metal mesh (20) is located at the front end opening of the rectifying column (9), and activated carbon is arranged on the filter plate (19).

6. The rectifying and decolorizing device for ethyl phenylacetate according to claim 1, wherein It further includes a stirring mechanism arranged on the top cover of the evaporation tank (17); The stirring mechanism includes a motor (22) fixed on the top cover of the evaporation tank (17). The output shaft of the motor (22) is connected to a rotating shaft (23) through a coupling. A stirring rod (24) is fixedly installed on the rotating shaft (23).

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