Rectification equipment for alpha-acetyl-gamma-butyrolactone
By introducing reheaters, jet components and reflow components into the distillation equipment, the problem of steam heat drop is solved, and the solvent on each layer of the tray is fully vaporized, which improves the distillation effect.
Patent Information
- Application Number
- CN202421265826.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-04
AI Technical Summary
When the existing distillation tower is used, the steam heat decreases and the solvent in the upper column can no longer be vaporized, resulting in the waste of the hot gas itself and the effect of distillation is reduced.
A distillation device including a reheater, a jet assembly and a reflow assembly is designed to generate steam by heating the reheater and convey the steam to the exhaust tank inside each tray through the jet assembly to fully vaporize the solvent. . Meanwhile, the gas is converted into condensate through the condenser and the condensate is uniformly sprayed onto the top of each tray through the reflux assembly for next vaporization.
The heat of steam is used to vaporize the solvent on each layer of the tray, which improves the distillation effect and avoids the waste of hot gas.
Smart Images
Figure CN222488937U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of alpha-acetyl-gamma-butyrolactone production equipment, in particular to a distillation device for alpha-acetyl-gamma-butyrolactone. Background Art
[0002] α-Acetyl-γ-butyrolactone, referred to as ΑBL, has a molecular formula of C6H8O3 and a molecular weight of 128.13. It is a colorless, transparent liquid with an ester odor. It is soluble in organic solvents and has a solubility of 20% in water. It is relatively stable at room temperature. Its main use is to synthesize vitamin B1 and pesticides. When producing α-acetyl-γ-butyrolactone, a distillation tower is required for distillation and purification.
[0003] However, when the existing distillation tower is in use, the steam distilled through the reboiler will be discharged from the bottom of the bottom plate in the tower body, and then pass through the middle hole of this plate to achieve the vaporization effect on the liquid. However, after the steam passes through the bottom plate, the temperature of the hot gas will drop, and it will no longer be able to vaporize the solvent in the upper plate, resulting in a waste of the heat source of the hot gas itself, reducing the effect of distillation. Summary of the invention
[0004] The purpose of the utility model is to provide a distillation device for α-acetyl-γ-butyrolactone to solve the defects existing in the above-mentioned prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a distillation device for α-acetyl-γ-butyrolactone, comprising a tower body, a feed pipe is fixedly connected to the top of the outer wall of the tower body, a discharge pipe is fixedly connected to the bottom of the outer wall of the tower body, an air inlet pipe is fixedly connected to the top of the tower body, a reheater is installed at the water outlet end of the discharge pipe, an injection assembly is installed between the tower body and the reheater, a mounting hole is opened at the top of the tower body, an air inlet pipe is installed inside the mounting hole, a condenser is fixedly installed on the top of the air inlet pipe, a reflux assembly is installed between the tower body and the condenser, a plurality of tower plates are installed inside the tower body, and four of the tower plates are staggered in sequence.
[0006] Furthermore, a baffle is fixedly connected to the top of the tower plate.
[0007] Furthermore, the injection assembly includes a first air pipe and a second air pipe, the outer shell of the reheater is fixedly connected to the first air pipe, the second air pipe is fixedly connected to the outer wall of the first air pipe, and one end of the second air pipe away from the first air pipe is connected to the inside of the tower plate.
[0008] Furthermore, an exhaust groove is provided inside the tower plate, a plurality of air holes distributed in a ring shape are provided inside the tower plate, the exhaust groove is connected to the air holes, and the exhaust end of the second air pipe is connected to the exhaust groove.
[0009] Furthermore, the reflux assembly includes a first reflux pipe, a diverter, a second reflux pipe, a circular drain block and a nozzle. The first reflux pipe is fixedly installed on the bottom of the condenser. The diverter is fixedly connected to the bottom of the first reflux pipe. The second reflux pipe has three distributions fixedly connected to the bottom of the diverter. The circular drain block is fixedly connected to the water outlet end of the second reflux pipe. The nozzles have multiple ring-shaped distributions at the bottom of the circular drain block. The circular drain block is fixedly installed on the inner wall of the tower body and is located between two tower plates.
[0010] Furthermore, a water pump is installed inside the first reflux pipe.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The utility model is provided with a reheater, a first air pipe, a second air pipe, an exhaust groove and an air hole. The solvent is heated by the reheater to generate steam, and then the steam is transported to the exhaust groove inside each tower plate through the first air pipe and the second air pipe, and then moves upward and is discharged from the air hole, and then passes through the tower plate to vaporize the solvent. The heat of the steam can be fully utilized to vaporize the solvent on each tower plate, thereby improving the distillation effect.
[0013] 2. The utility model is provided with a tower body, a tower plate, a condenser, a first reflux pipe, a diverter, a second reflux pipe, a circular drainage block and a nozzle. The gas is converted into condensate by the condenser, and then enters the interior of the first reflux pipe. The condensate enters the interiors of the three second reflux pipes through the diverter, and then is discharged through the nozzle at the bottom of the circular drainage block, falls to the top of the tower plate along the inner wall of the tower body, and is vaporized next time, so that the reflux condensate can be evenly sprayed on the top of each tower plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first viewing angle;
[0016] Figure 2 This is a schematic diagram of the third perspective structure of the utility model;
[0017] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model;
[0018] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the jet assembly of the utility model;
[0019] Figure 5 It is a three-dimensional structural schematic diagram of the reflux component of the utility model;
[0020] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at position A in the middle.
[0021] In the figure: 1. tower body; 2. feed pipe; 3. tower plate; 4. baffle; 5. discharge pipe; 6. reheater; 7. first air pipe; 8. second air pipe; 9. exhaust groove; 10. air hole; 11. mounting hole; 12. air inlet pipe; 13. condenser; 14. first reflux pipe; 15. water pump; 16. diverter; 17. second reflux pipe; 18. circular drain block; 19. nozzle. DETAILED DESCRIPTION
[0022] 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.
[0023] Reference Figure 1-6 The utility model provides a distillation device for α-acetyl-γ-butyrolactone: it comprises a tower body 1, a feed pipe 2 is fixedly connected to the top of the outer wall of the tower body 1, a discharge pipe 5 is fixedly connected to the bottom of the outer wall of the tower body 1, an air inlet pipe 12 is fixedly connected to the top of the tower body 1, a reheater 6 is installed at the water outlet end of the discharge pipe 5, an injection assembly is installed between the tower body 1 and the reheater 6, a mounting hole 11 is opened on the top of the tower body 1, an air inlet pipe 12 is installed inside the mounting hole 11, a condenser 13 is fixedly installed on the top of the air inlet pipe 12, a reflux assembly is installed between the tower body 1 and the condenser 13, a plurality of tower plates 3 are installed inside the tower body 1, and four of the tower plates 3 are staggered in sequence. When in use, the solvent is added to the interior of the tower body 1 through the feed pipe 2, and the solvent reaches the bottom of the tower body 1 after passing through four tower plates 3. Then the solvent enters the interior of the reheater 6 through the discharge pipe 5. The reheater 6 heats the solvent to generate steam. The steam is ejected from the interior of the tower plate 3 in the tower body 1 through the jet assembly to vaporize the solvent on the top of the tower plate 3. Then the gas moves upward through the air inlet pipe 12 to the interior of the condenser 13, and the gas is converted into condensate by the condenser 13. Then the condensate is evenly sprayed onto the inner wall of the tower body 1 through the reflux assembly.
[0024] A baffle 4 is fixedly connected to the top of the tower plate 3. During use, when the solvent passes through the tower plate 3, the baffle 4 can block the solvent at the top of the tower plate 3, and then continue to transport the solvent to the tower plate 3. When the solvent overflows the baffle 4, it can flow to the tower plate 3 at the bottom.
[0025] The jet assembly includes a first air pipe 7 and a second air pipe 8. The first air pipe 7 is fixedly connected to the outer shell of the reheater 6. The second air pipe 8 is fixedly connected to the outer wall of the first air pipe 7. One end of the second air pipe 8 away from the first air pipe 7 is connected to the inside of the tray 3. When in use, the solvent is heated by the reheater 6 to generate steam, and then the steam is transported to the inside of each tray 3 through the first air pipe 7 and the second air pipe 8, so that the heat of the steam can be fully utilized to vaporize the solvent on each tray 3.
[0026] The tray 3 is provided with an exhaust groove 9, and a plurality of annularly distributed air holes 10 are provided inside the tray 3. The exhaust groove 9 is connected to the air holes 10, and the exhaust end of the second air pipe 8 is connected to the exhaust groove 9. When in use, the steam enters the exhaust groove 9 inside the tray 3, moves upward, is discharged from the air holes 10, and then passes through the tray 3 to vaporize the solvent.
[0027] The reflux assembly includes a first reflux pipe 14, a diverter 16, a second reflux pipe 17, a circular drainage block 18 and a nozzle 19. The first reflux pipe 14 is fixedly installed at the bottom of the condenser 13. The diverter 16 is fixedly connected to the bottom of the first reflux pipe 14. The second reflux pipe 17 has three distributions fixedly connected to the bottom of the diverter 16. The circular drainage block 18 is fixedly connected to the water outlet end of the second reflux pipe 17. There are multiple nozzles 19 distributed in an annular shape at the bottom of the circular drainage block 18. The circular drainage block 18 is fixedly installed on the inner wall of the tower body 1 and is located between two tower plates 3. When in use, the vaporized and cooled steam enters the interior of the condenser 13 through the air inlet pipe 12. The condenser 13 converts the gas into condensate, which then enters the interior of the first reflux pipe 14. The condensate enters the interior of the second reflux pipe 17 through the diverter 16, and then is discharged through the nozzle 19 at the bottom of the circular drainage block 18, and falls to the top of the tower plate 3 along the inner wall of the tower body 1.
[0028] A water pump 15 is installed inside the first reflux pipe 14. When the reflux assembly is in use, the water pump 15 is turned on to speed up the dripping speed of the reflux condensate.
[0029] Working principle: When the utility model is used, the solvent is added into the tower body 1 through the feed pipe 2. When the solvent passes through the tower plate 3, the baffle 4 can block the solvent at the top of the tower plate 3, and then continue to transport the solvent to the tower plate 3. When the solvent overflows the baffle 4, it can flow to the bottom of the tower plate 3. After the solvent passes through four tower plates 3, it reaches the bottom of the tower body 1. The solvent enters the inside of the reheater 6 through the discharge pipe 5, and the solvent is heated by the reheater 6 to generate steam, and then the steam is transported to each through the first air pipe 7 and the second air pipe 8. The gas enters the exhaust groove 9 inside the tower plate 3, then moves upward and is discharged from the air hole 10, then passes through the tower plate 3 to vaporize the solvent, and then the gas moves upward through the air inlet pipe 12 to enter the inside of the condenser 13, and is converted into condensate by the condenser 13, and then enters the inside of the first reflux pipe 14, and the condensate enters the inside of the second reflux pipe 17 through the diverter 16, and then is discharged through the nozzle 19 at the bottom of the circular drainage block 18, and falls to the top of the tower plate 3 along the inner wall of the tower body 1 for the next vaporization.
[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A distillation device for α-acetyl-γ-butyrolactone, comprising a tower body (1), characterized in that: A feed pipe (2) is fixedly connected to the top of the outer wall of the tower body (1), a discharge pipe (5) is fixedly connected to the bottom of the outer wall of the tower body (1), an air inlet pipe (12) is fixedly connected to the top of the tower body (1), a reheater (6) is installed at the water outlet end of the discharge pipe (5), an injection assembly is installed between the tower body (1) and the reheater (6), a mounting hole (11) is opened at the top of the tower body (1), an air inlet pipe (12) is installed inside the mounting hole (11), a condenser (13) is fixedly installed on the top of the air inlet pipe (12), a reflux assembly is installed between the tower body (1) and the condenser (13), and a plurality of tower plates (3) are installed inside the tower body (1), and four of the tower plates (3) are staggered in sequence.
2. The distillation equipment for α-acetyl-γ-butyrolactone according to claim 1, characterized in that: A baffle (4) is fixedly connected to the top of the tower plate (3).
3. The distillation equipment for α-acetyl-γ-butyrolactone according to claim 2, characterized in that: The injection assembly comprises a first air pipe (7) and a second air pipe (8); the outer shell of the reheater (6) is fixedly connected to the first air pipe (7); the second air pipe (8) is fixedly connected to the outer wall of the first air pipe (7); and one end of the second air pipe (8) away from the first air pipe (7) is connected to the inside of the tower plate (3).
4. The distillation equipment for α-acetyl-γ-butyrolactone according to claim 3, characterized in that: An exhaust groove (9) is provided inside the tower plate (3), a plurality of air holes (10) distributed in an annular shape are provided inside the tower plate (3), the exhaust groove (9) is connected to the air holes (10), and the exhaust end of the second air pipe (8) is connected to the exhaust groove (9).
5. The distillation equipment for α-acetyl-γ-butyrolactone according to claim 2, characterized in that: The reflux assembly comprises a first reflux pipe (14), a diverter (16), a second reflux pipe (17), a circular drainage block (18) and a nozzle (19); the first reflux pipe (14) is fixedly installed at the bottom of the condenser (13); the diverter (16) is fixedly connected to the bottom of the first reflux pipe (14); the second reflux pipe (17) has three nozzles respectively fixedly connected to the bottom of the diverter (16); the circular drainage block (18) is fixedly connected to the water outlet end of the second reflux pipe (17); a plurality of nozzles (19) are distributed in an annular shape at the bottom of the circular drainage block (18); and the circular drainage block (18) is fixedly installed on the inner wall of the tower body (1) and is located between two tower plates (3).
6. The distillation equipment for α-acetyl-γ-butyrolactone according to claim 5, characterized in that: A water pump (15) is installed inside the first reflux pipe (14).