Deacidification device for acetyl tri-n-butyl ester

Abstract

The utility model relates to the technical field of deacidification, and discloses a deacidification device for acetyl tri-n-butyl ester, which comprises a deacidification barrel, a fixed frame fixedly connected to the bottom end of the deacidification barrel, a charging valve connected to the top end of the deacidification barrel, a medicament barrel fixed to the top end of the charging valve, and a layered sampling assembly connected to one side of the deacidification barrel, a dispersing and neutralizing assembly is arranged in the deacidification barrel and is driven by a driving motor. According to the utility model, under the action of the stratified sampling assembly, the plurality of sampling grooves which are arranged at equal intervals can perform synchronous sampling on one side of the deacidification barrel, and through the arrangement of the adjusting plate, the adjusting plate can perform synchronous opening and closing on the sampling grooves, so that the sampling accuracy is ensured, and through the arrangement of the plurality of sampling grooves, the sampling efficiency is improved. Therefore, a user can synchronously detect the PH values of the neutralization solutions at different heights in the deacidification barrel, and opening and closing detection of the deacidification barrel is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of deacidification, in particular to a deacidification device for acetyl tri-n-butyl ester. Background Art

[0002] Acetyl tributyl citrate is an organic substance that is a colorless, odorless, low-volatile oily liquid. It is soluble in most organic solvents but insoluble in water. Acetyl tributyl citrate is a non-toxic plasticizer that can be used as a plasticizer for polyvinyl chloride, cellulose resin, and synthetic rubber. It is used in non-toxic PVC granulation, food packaging containers, children's toys, medical products, films, sheets, cellulose coatings, and other products. It can also be used as a stabilizer for polyvinylidene chloride.

[0003] Acetyl tri-n-butyl citrate is prepared by heating and stirring citric acid, n-butanol and a catalyst in a reactor to promote the esterification reaction. After the esterification is qualified, it is subjected to reduced pressure distillation in a dealcoholization tower to remove unreacted n-butanol, and the dealcoholized tri-n-butyl citrate is chemically acetylated with acetic anhydride in an acylation reactor.

[0004] After the acetylation process of acetyl tri-n-butyl citrate, the tri-butyl acetate citrate separated in the post-processing still contains some acidic substances, so the material remains acidic. Therefore, it is necessary to add an alkaline substance (such as sodium carbonate solution) to neutralize the remaining acidic substances and adjust the pH value to neutral to achieve deacidification. However, existing deacidification and neutralization processes usually involve manual mixing, which is inefficient and cannot achieve effective pH detection. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a deacidification device for tri-n-butyl acetate, which solves the problems mentioned in the above background.

[0006] The utility model provides the following technical solution: a deacidification device for acetyl tri-n-butyl ester, comprising: a deacidification barrel, a fixing frame fixedly connected to the bottom end of the deacidification barrel, a feeding valve connected to the top end of the deacidification barrel, and a medicine barrel fixed to the top end of the feeding valve, further comprising: a stratified sampling component connected to one side of the deacidification barrel, a dispersion and neutralization component provided inside the deacidification barrel, and the dispersion and neutralization component is driven by a drive motor, and discharge ports are provided on both sides of the drive motor, and the discharge ports are fixedly installed at the bottom end of the deacidification barrel;

[0007] The layered sampling assembly includes a plurality of sampling slots, and the plurality of sampling slots are fixedly installed on the outer wall of the deacidification barrel at equal distances from top to bottom, and a flow slot is provided between the deacidification barrel and each sampling slot. An adjustment plate is provided on the inner wall of the deacidification barrel, and a plurality of through holes are provided inside the adjustment plate corresponding to the plurality of flow slots, and the surface area between the plurality of through holes is greater than the surface area of the flow slots. The adjustment plate is movably extended and retracted on the inner wall of the deacidification barrel by a telescopic unit, and the outer wall of the adjustment plate is slidably connected to the inner wall of the deacidification barrel;

[0008] The dispersion and neutralization component comprises a vertical rod, and the vertical rod is rotatably connected to the inner bottom wall of the deacidification barrel, and a plurality of dispersion units are equidistantly arranged on the outer wall of the vertical rod.

[0009] Furthermore, the telescopic unit includes a connecting rod, and the connecting rod is fixedly installed on the top of the adjusting plate, and the connecting rod is arranged above the deacidification barrel. The outer wall of the connecting rod is provided with a telescopic spring, and the bottom end of the telescopic spring is fixedly connected to the surface of the deacidification barrel.

[0010] Furthermore, the dispersion unit includes a lower supporting plate, and the lower supporting plate is fixedly mounted on the outer wall of the vertical pole. Neutralizing rods are equidistantly arranged in a ring above the lower supporting plate, and the neutralizing rods are fixedly connected to the outer wall of the vertical pole.

[0011] Furthermore, the lower supporting plate is arranged in a flat-bottomed bowl shape, and a plurality of through holes are opened through the interior of the lower supporting plate.

[0012] Furthermore, an upper guide plate is provided above the neutralizing rod, and the upper guide plate is fixedly mounted on the outer wall of the vertical rod;

[0013] The upper guide plate is arranged in a "J"-shaped structure.

[0014] Furthermore, the bottom end of the sampling trough is connected to a liquid drain pipe, the top end of the sampling trough is provided with a detection port, and the surface of the sampling trough is embedded with an observation window.

[0015] Furthermore, the driving motor is fixedly installed at the bottom end of the deacidification barrel, and the output end of the driving motor is fixedly connected to the vertical rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, under the action of the layered sampling assembly, multiple sampling slots arranged at equal distances can be synchronously sampled on one side of the deacidification barrel, and through the setting of the adjustment plate, the adjustment plate can synchronously open and close the sampling slots, ensuring the accuracy of sampling. Moreover, through the setting of multiple sampling slots, the user can synchronously detect the pH value of the neutralization solution at different heights inside the deacidification barrel, avoiding the opening and closing detection of the deacidification barrel. The structure is simple and the operation is convenient, which facilitates the user to scientifically and accurately deacidify acetyl tri-n-butyl ester.

[0018] 2. In the present invention, the arrangement of the dispersion and neutralization assembly, under the action of multiple dispersion units fixedly connected to the outer wall of the vertical pole, enables the lower support plate and the upper guide plate to fully disperse and neutralize the solution, which is convenient for sufficient mixing and deacidification of the agent and the solution. Moreover, the upper guide plate is arranged in a "J"-shaped structure, so that the neutralizer is effectively dispersed and dropped, which is convenient for sufficient mixing with acetyl tri-n-butyl ester inside the deacidification barrel, realizing the lifting space of the adjustment plate, avoiding interference with the adjustment plate, and ensuring the stability of the sampling of the deacidification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a deacidification device for acetyl tri-n-butyl ester according to the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of a deacidification device for acetyl tri-n-butyl ester in the present invention;

[0021] Figure 3 This is a schematic structural diagram of the dispersion and neutralization component in the present utility model;

[0022] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A.

[0023] In the figure: 1. Deacidification barrel; 2. Fixed frame; 3. Feeding valve; 4. Chemical barrel; 5. Discharge port; 6. Sampling trough; 7. Observation window; 8. Detection port; 9. Adjustment plate; 10. Through hole; 11. Connecting rod; 12. Telescopic spring; 13. Drive motor; 14. Vertical pole; 15. Neutralization rod; 16. Lower support plate; 17. Upper guide plate; 18. Through hole; 19. Drain pipe. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1-4 A deacidification device for acetyl tri-n-butyl ester includes: a deacidification barrel 1, a fixing frame 2 fixedly connected to the bottom end of the deacidification barrel 1, a feeding valve 3 connected to the top end of the deacidification barrel 1, a medicine barrel 4 fixed to the top end of the feeding valve 3, a discharge port 5, a sampling slot 6, an observation window 7, a detection port 8, an adjustment plate 9, a through hole 10, a connecting rod 11, a telescopic spring 12, a driving motor 13, a vertical rod 14, a neutralization rod 15, a lower supporting plate 16, an upper guide plate 17, a through hole 18 and a drain pipe 19, and further includes: in order to achieve accurate detection of the neutralization solution in the temporal portion of the deacidification barrel 1, a device is connected on one side of the deacidification barrel 1. There is a layered sampling component, which is conducive to the accurate detection of the pH value at different positions inside the deacidification barrel 1. At the same time, in order to improve the deacidification efficiency, a dispersion and neutralization component is also provided inside the deacidification barrel 1, and the dispersion and neutralization component is driven by a drive motor 13. Specifically, the drive motor 13 is fixedly installed at the bottom end of the deacidification barrel 1, and the output end of the drive motor 13 is fixedly connected to a vertical rod 14, and a discharge port 5 is provided on both sides of the drive motor 13, and the discharge port 5 is fixedly installed at the bottom end of the deacidification barrel 1, so that the deacidified acetyl tri-n-butyl ester can be quickly discharged through the discharge port 5;

[0026] Furthermore, the layered sampling assembly includes a plurality of sampling slots 6, and the plurality of sampling slots 6 are fixedly installed on the outer wall of the deacidification barrel 1 at equal distances above and below. Specifically, there is a circulation slot between the deacidification barrel 1 and each sampling slot 6. An adjusting plate 9 is fitted on the inner wall of the deacidification barrel 1, and a plurality of through holes 10 are provided inside the adjusting plate 9 corresponding to the plurality of circulation slots, and the surface area between the plurality of through holes 10 is larger than the surface area of the circulation slots, so that the adjusting plate 9 can close the circulation slots through the positions between the through holes 10, so as to control and open the circulation of the sampling slots 6. In order to realize the operation of the adjusting plate 9, the adjusting plate 9 is movably extended and retracted on the inner wall of the deacidification barrel 1 through a telescopic unit, wherein the telescopic unit includes a connecting rod 11, and the connecting rod 11 is fixedly installed on the top of the adjusting plate 9, and the connecting rod 11 is arranged through the top of the deacidification barrel 1, and the outer wall of the connecting rod 11 is provided with a telescopic sleeve. The compression spring 12 is fixedly connected to the surface of the deacidification barrel 1 by the user, and the expansion spring 12 is compressed by squeezing the connecting rod 11 downward. Under the action of the adjusting plate 9 fixedly connected to the bottom end of the connecting rod 11, the adjusting plate 9 is made to correspond to the circulation slot through the through hole 10, so that the solution inside the deacidification barrel 1 is added to each sampling slot 6 respectively. In addition, considering the movement effect of the adjusting plate 9 inside the deacidification barrel 1, the outer wall of the adjusting plate 9 is slidably connected to the inner wall of the deacidification barrel 1. In consideration of the convenience and repeatability of using the sampling slot 6, a drain pipe 19 is connected to the bottom end of the sampling slot 6. At the same time, a detection port 8 is provided at the top of the sampling slot 6, so that the user can directly detect the solution inside the sampling slot 6 through the detection port 8, and an observation window 7 is embedded on the surface of the sampling slot 6, so that the user can directly penetrate the sampling amount, which is conducive to realizing the control of the adjusting plate 9.

[0027] See also Figures 1-4 The dispersion and neutralization assembly includes a vertical rod 14, and the vertical rod 14 is rotatably connected to the inner bottom wall of the deacidification barrel 1, and a plurality of dispersion units are equidistantly arranged on the outer wall of the vertical rod 14, wherein the dispersion unit includes a lower support plate 16, and the lower support plate 16 is fixedly mounted on the outer wall of the vertical rod 14, and a neutralization rod 15 is equidistantly arranged above the lower support plate 16 in an annular shape, and the neutralization rod 15 is fixedly connected to the outer wall of the vertical rod 14, and the lower support plate 16 is arranged in a flat-bottomed bowl shape. Under the action of the flat-bottomed bowl shape of the lower support plate 16, the medicine and the lower support plate are The contact area of the surface of 16 is increased, and a plurality of through holes 18 are opened through the interior of the lower support plate 16, so that the solution inside the lower support plate 16 can be effectively circulated, thereby avoiding the accumulation of the solution on the surface of the lower support plate 16. At the same time, an upper guide plate 17 is provided above the neutralization rod 15, and the upper guide plate 17 is fixedly mounted on the outer wall of the vertical rod 14. The upper guide plate 17 is arranged in a "J"-shaped structure, so that the neutralizer is effectively dispersed and dropped, so as to facilitate full mixing with the acetyl tri-n-butyl ester inside the deacidification barrel 1.

[0028] Working principle: When in use, by adding neutralizer into the inside of the medicine barrel 4, under the action of the feeding valve 3 connected to the bottom of the medicine barrel 4, the neutralizer is accurately fed into the inside of the deacidification barrel 1 through the feeding valve 3. In order to achieve full mixing of the neutralizer and the internal acetyl tri-n-butyl ester to achieve efficient deacidification, the vertical rod 14 is driven by the driving motor 13. Under the action of multiple dispersed units fixedly connected to the outer wall of the vertical rod 14, the neutralizer inside the medicine barrel 4 flows downward through the upper guide plate 17. 7, the neutralizing agent is effectively dispersed and dropped, so that it is convenient to fully mix with the acetyl tri-n-butyl ester inside the deacidification barrel 1, and by arranging the lower support plate 16 below the upper guide plate 17, the contact area between the agent and the surface of the lower support plate 16 is increased under the action of the flat bottom bowl of the lower support plate 16. Under the rotation of the lower support plate 16, it is convenient to fully mix and neutralize the neutralizing agent, and by arranging the neutralizing rod 15 between the upper guide plate 17 and the lower support plate 16, the neutralization of the neutralizing agent is improved. The mixing efficiency inside the deacidification barrel 1 is conducive to accelerating the deacidification speed. After the deacidification barrel 1 is neutralized, in order to realize the pH value detection of the solution inside the deacidification barrel 1, the connecting rod 11 is squeezed downward, so that the telescopic spring 12 is compressed. Under the action of the adjustment plate 9 fixedly connected to the bottom end of the connecting rod 11, the adjustment plate 9 is made to correspond to the circulation groove through the through hole 10, so that the solution inside the deacidification barrel 1 is added to each sampling groove 6 respectively. After sampling, the connecting rod 11 is not under force, so that the telescopic spring 12 is reset, so that the connecting rod 11 drives the adjustment plate 9 to move upward, so that the adjustment plate 9 blocks the circulation groove, realizing the closure of the sampling groove 6. By arranging the detection port 8 at the top of the sampling groove 6, the user can directly perform pH value detection on the sample solution through the detection port 8, and by connecting the drain pipe 19 to the bottom end of the sampling groove 6, it is convenient to empty the sampling groove 6 after the detection is completed, which is conducive to re-detection. In this way, the working principle of the deacidification device for acetyl tri-n-butyl ester is completed.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deacidification device for tri-n-butyl acetyl, comprising: A deacidification barrel (1), a fixing frame (2) fixedly connected to the bottom end of the deacidification barrel (1), a feeding valve (3) connected to the top end of the deacidification barrel (1), and a medicine barrel (4) fixed to the top end of the feeding valve (3), characterized in that it also includes: a layered sampling component is connected to one side of the deacidification barrel (1), and a dispersion and neutralization component is provided inside the deacidification barrel (1), and the dispersion and neutralization component is driven by a driving motor (13), and discharge ports (5) are provided on both sides of the driving motor (13), and the discharge port (5) is fixedly installed at the bottom end of the deacidification barrel (1); The layered sampling assembly includes a plurality of sampling slots (6), and the plurality of sampling slots (6) are fixedly installed on the outer wall of the deacidification barrel (1) at equal distances from top to bottom, and a circulation slot is provided between the deacidification barrel (1) and each sampling slot (6). An adjustment plate (9) is provided on the inner wall of the deacidification barrel (1), and a plurality of through holes (10) are provided inside the adjustment plate (9) corresponding to the plurality of circulation slots, and the surface area between the plurality of through holes (10) is greater than the surface area of the circulation slots. The adjustment plate (9) is movably extended and retracted on the inner wall of the deacidification barrel (1) through a telescopic unit, and the outer wall of the adjustment plate (9) is slidably connected to the inner wall of the deacidification barrel (1); The dispersion and neutralization assembly comprises a vertical rod (14), and the vertical rod (14) is rotatably connected to the inner bottom wall of the deacidification barrel (1), and a plurality of dispersion units are equidistantly arranged on the outer wall of the vertical rod (14).

2. A deacidification device for tri-n-butyl acetate according to claim 1, characterized in that: The telescopic unit includes a connecting rod (11), and the connecting rod (11) is fixedly mounted on the top of the adjustment plate (9), and the connecting rod (11) is arranged above the deacidification barrel (1), and the outer wall of the connecting rod (11) is provided with a telescopic spring (12), and the bottom end of the telescopic spring (12) is fixedly connected to the surface of the deacidification barrel (1).

3. A deacidification device for tri-n-butyl acetate according to claim 1, characterized in that: The dispersion unit includes a lower support plate (16), and the lower support plate (16) is fixedly installed on the outer wall of the vertical pole (14); neutralizing rods (15) are equidistantly arranged in an annular manner above the lower support plate (16), and the neutralizing rods (15) are fixedly connected to the outer wall of the vertical pole (14).

4. A deacidification device for tri-n-butyl acetate according to claim 3, characterized in that: The lower supporting plate (16) is arranged in a flat-bottomed bowl shape, and a plurality of through holes (18) are provided through the interior of the lower supporting plate (16).

5. The deacidification device for tri-n-butyl acetate according to claim 3, characterized in that: An upper guide plate (17) is provided above the neutralizing rod (15), and the upper guide plate (17) is fixedly mounted on the outer wall of the vertical rod (14); The upper guide plate (17) is arranged in a "J"-shaped structure.

6. The deacidification device for tri-n-butyl acetate according to claim 1, characterized in that: The bottom end of the sampling trough (6) is connected to a liquid drain pipe (19), the top end of the sampling trough (6) is provided with a detection port (8), and the surface of the sampling trough (6) is embedded with an observation window (7).

7. The deacidification device for tri-n-butyl acetate according to claim 1, characterized in that: The driving motor (13) is fixedly mounted on the bottom end of the deacidification barrel (1), and the output end of the driving motor (13) is fixedly connected to a vertical rod (14).

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