Dual-purpose membrane separation pretreatment device with distillation reflux

Abstract

The utility model relates to the technical field of dual-purpose membrane separation pretreatment devices, and discloses a dual-purpose membrane separation pretreatment device with distillation reflux, which comprises a distillation flask, a distillation column and a finished product collection container, and is also provided with a demister arranged between the distillation flask and the distillation column, the return pipe is connected to the upper end and the lower end of the distillation column; the condenser pipe is connected to the return pipe; and the backflow control valve is arranged between the backflow pipe and the finished product collecting container. According to the dual-purpose membrane separation pretreatment device with the distillation and reflux functions, disclosed by the utility model, a distillation, condensation and reflux integrated device is integrated, so that the safety of distillation and reflux can be fully ensured, and integrated distillation, reflux and collection of efficient defoaming, distillation and reflux are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of dual-purpose membrane separation pretreatment devices, in particular to a dual-purpose membrane separation pretreatment device with distillation reflux. Background Art

[0002] The statements in this section are merely to provide background technology related to the disclosure of the present utility model and do not necessarily constitute prior art.

[0003] In industrial production, solvents often introduce impurities such as water, acid, and salts after use, so they cannot be reused. If they are directly disposed of as waste, it will not only be wasteful but also pollute the environment, which does not meet the development requirements of energy conservation and emission reduction. Molecular sieve membrane water separation technology is a new, efficient, and environmentally friendly separation method. However, the membrane has requirements for the physical properties of the feed liquid. The material normally needs to be neutral and have low conductivity. Therefore, the feed liquid needs to be acid-base neutralized and distilled before entering the membrane. However, ordinary distillation equipment cannot perform a thorough neutralization reaction at the boiling point of the material. If you want to react at the boiling point of the material, you need to perform a reflux operation.

[0004] Currently, distillation and reflux processes are performed using two separate devices. Switching between these devices while the reactor or distillation flask is at high temperatures is dangerous and can easily lead to safety incidents. Furthermore, overheating during the switching process can cause gas-liquid carryover, leading to material loss and compromising the accuracy of experimental results. In existing technologies, distillation and reflux are performed using separate devices, which complicates the connecting pipes and is not conducive to operation. Utility Model Content

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a dual-purpose membrane separation pretreatment device with distillation and reflux, which combines reaction, reflux and distillation together, saving time and space, facilitating operation, avoiding safety accidents during material transfer, and adding a demister between the distillation column and the distillation flask to effectively prevent gas-liquid entrainment and liquid flooding.

[0006] The technical solution adopted by the utility model is: a dual-purpose membrane separation pretreatment device with distillation reflux, including a distillation flask, a distillation column and a finished product collection container, the dual-purpose membrane separation pretreatment device also has: a demister arranged between the distillation flask and the distillation column; a reflux pipe connected to the upper and lower ends of the distillation column; a condenser connected to the reflux pipe; and a reflux control valve arranged between the reflux pipe and the finished product collection container.

[0007] In this technical solution, a temperature detection interface is also provided on the distillation flask for inserting a thermometer into the distillation flask to detect the real-time temperature inside the distillation flask, thereby indicating subsequent operations and ensuring that distillation and reflux are carried out at appropriate temperatures to ensure the safety of the operation.

[0008] In this technical solution, the condenser tube is further provided with a condenser inlet and a condensed water outlet.

[0009] In the present technical solution, both ends of the demister are pluggably connected to the ends of the distillation flask and the distillation column, respectively, so as to enable quick connection and realize installation, maintenance and operation.

[0010] In the present technical solution, the demister comprises a cylinder and at least one demister device arranged vertically in parallel on the cylinder.

[0011] In the present technical solution, each of the defoaming devices has at least one partition main board; at least two inclined support columns fixed on the partition main board; and a defoaming plate with a plurality of defoaming sieve holes movably sleeved on the above-mentioned support columns.

[0012] In this technical solution, a defoaming plate having a plurality of defoaming sieve holes is sleeved on a main partition plate.

[0013] In this technical solution, the number of the partition main boards is 2-5.

[0014] In this technical solution, the partition main plate of each defoaming device is fixed in the cylinder, or is engaged in the cylinder through a supporting structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. An integrated distillation, condensation, and reflux device is installed. A condenser is set between the reactor or distillation flask for reaction before reflux. The condenser is provided with a condensation outlet and inlet to adjust the temperature at any time. A reflux control valve is used to switch the distillation and reflux states, and the distillation temperature and condensation temperature are observed to ensure safety.

[0017] 2. A demister is installed between the raw material bottle and the distillation column. When the high-speed airflow carrying liquid suddenly encounters a large space, the gas and liquid will separate quickly, and the liquid will fall back into the distillation bottle, thus avoiding the gas-liquid entrainment phenomenon.

[0018] 3. A reflux control valve is set between the condenser and the finished product collection pipe to switch to reflux through condensation or collection of finished products through condensation, realizing integrated distillation, reflux and collection.

[0019] To sum up, the utility model is a dual-purpose membrane separation pretreatment device with distillation reflux, which integrates distillation, condensation and reflux into an integrated device, can fully ensure the safety of distillation and reflux, and realizes the integrated distillation, reflux and collection of defoaming, distillation and reflux efficiently; and the dual-purpose membrane separation pretreatment device has fewer pipelines, simple operation, no need for material transfer, and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a dual-purpose membrane separation pretreatment device with distillation reflux;

[0021] Figure 2 This is the main view of the demister;

[0022] Figure 3 for Figure 2 AA sectional view of an embodiment of a demister;

[0023] Figure 4 for Figure 2 AA sectional view of another embodiment of the demister;

[0024] Figure 5 is a three-dimensional structural diagram of the defoaming device 32;

[0025] Among them: 1-distillation flask, 2-thermometer, 3-demister, 31-cylinder, 32-demister device, 321-partitioning main board, 322-support column, 3221-protruding fence part; 323-demister plate with a plurality of sieve holes for demister; 33-support structure; 4-distillation column, 5-thermometer, 6-condenser, 61-condenser inlet, 62-condensed water outlet; 7-reflux pipe, 8-finished product collection pipe, 9-collection container, 10-reflux control valve. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the combination or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention. In addition, in the description of the embodiments of the present invention, the device positional relationships such as "up", "down", "front", "back", "left", "right" and the like in all the drawings are based on the directions or positional relationships shown in the accompanying drawings. Figure 1 As standard.

[0028] like Figure 1 As shown, a dual-purpose membrane separation pretreatment device with distillation reflux includes a distillation flask 1, a distillation column 4 and a finished product collection container 9, characterized in that the dual-purpose membrane separation pretreatment device also has:

[0029] A demister 3 is disposed between the distillation flask 1 and the distillation column 4; a reflux pipe 7 is connected to the upper and lower ends of the distillation column 4; a condenser 6 is connected to the reflux pipe 7; and a reflux control valve 10 is disposed between the reflux pipe 7 and the finished product collection container 9. In the specific implementation process, in order to simplify the distillation and reflux components into a single device, a U-shaped reflux pipe 7 is designed, with a reflux control valve 10 installed at the lower center of the reflux pipe 7, enabling flexible switching between reflux and liquid collection.

[0030] The operation process of the above-mentioned pretreatment device is: first, the mixed solution to be separated is added to the distillation flask 1, the temperature is increased for distillation, and the internal temperature is measured by the thermometer 2. At the same time, the demister 3 is used to prevent the foam from being carried upward. The gas phase enters the condenser 6 and refluxes and returns to the distillation flask 1. At this time, the reflux control valve 10 is kept closed; when the reflux is completed, the heating is continued, and the reflux control valve 10 is opened to remove the condensate.

[0031] In at least one embodiment, a temperature detection interface 8 is further provided on the distillation flask 1 for supplying the thermometer 2 to be inserted into the distillation flask 1 so as to detect the real-time temperature inside the distillation flask, thereby indicating subsequent operations and ensuring that distillation and reflux are carried out at appropriate temperatures to ensure the safety performance of the operation.

[0032] In at least one embodiment, the condenser tube 6 is further provided with a condenser inlet 61 and a condensed water outlet 62 to provide a condensation source and to promptly remove the condensed liquid, thereby ensuring that the condenser tube 6 can continue to work normally.

[0033] In at least one embodiment, both ends of the demister 3 are pluggably connected to the ends of the distillation flask 1 and the distillation column 4, respectively, so as to enable quick connection and achieve installation, maintenance and operation.

[0034] In at least one embodiment, Figure 2 and Figure 3 As shown, the demister 3 has a cylinder 31 and at least one demister device 32 arranged vertically in parallel on the cylinder 31, thereby achieving rapid demister. The multiple demister devices 32 are arranged in parallel for multiple demisters to further improve the demister efficiency.

[0035] In at least one embodiment, Figure 3 、 Figure 4 and Figure 5 As can be seen in the figure, each of the defoaming devices 32 comprises: at least one partition main board 321; and at least two inclined support columns 322 fixed on the partition main board 321; and a defoaming plate 323 with a plurality of defoaming sieve holes movably sleeved on the above-mentioned support columns 322. When the defoaming device 32 is working, the distilled gas and liquid quickly rise through the defoaming device 32, and are quickly defoamed under the action of the defoaming plate 323 with a plurality of defoaming sieve holes and the partition main board 321 and the partition main board 321, thereby achieving efficient defoaming.

[0036] In at least one embodiment, 2-3 defoaming plates 323 with a plurality of defoaming sieve holes are mounted on one of the partition main boards 321 to improve the defoaming efficiency. The advantage of this structure is that the defoaming plates 323 with a plurality of defoaming sieve holes can rise rapidly under the action of the high-temperature steam generated by the distillation flask 1, while blocking the rising of large bubbles and breaking up the rising large bubbles. When the bubbles fall back due to the inertia of gravity, they can also break up small bubbles, thereby achieving the effect of improving the defoaming efficiency.

[0037] In at least one embodiment, the number of the partition main boards 321 is 1-5, that is, the number of the defoaming devices 32 is 1-5, which can further improve the quality and efficiency of defoaming.

[0038] In at least one embodiment, the partition main board 321 of each defoaming device 32 is fixed in the cylinder 31, or is engaged in the cylinder 31 through the supporting structure 33. The two structures have their own advantages and can be implemented. During the specific implementation, they can be selected and determined according to the requirements or the principle of production convenience.

[0039] In at least one embodiment, Figure 5 As shown, the top of the support column 322 of each defoaming device 32 extends out of the top of the partition main board 321 at the highest point to form a protruding fence portion 3221, which further separates the distilled bubbles and improves the separation effect.

[0040] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A dual-purpose membrane separation pretreatment device with distillation reflux, comprising a distillation flask (1), a distillation column (4) and a finished product collection container (9), characterized in that: The dual-purpose membrane separation pre-treatment device further comprises: a demister (3) disposed between the distillation flask (1) and the distillation column (4); and a reflux pipe (7) connected to the upper and lower ends of the distillation column (4); and a condenser (6) connected to the reflux pipe (7); and a reflux control valve (10) disposed between the reflux pipe (7) and the finished product collection container (9); The two ends of the demister (3) are pluggably connected to the ends of the distillation flask (1) and the distillation column (4); The demister (3) comprises a cylinder (31) and at least one demister device (32) arranged vertically and in parallel on the cylinder (31).

2. The dual-purpose membrane separation pretreatment device with distillation reflux according to claim 1, characterized in that: The distillation flask (1) is also provided with a temperature detection interface (8) for allowing a thermometer (2) to be inserted into the distillation flask (1).

3. The dual-purpose membrane separation pretreatment device with distillation reflux according to claim 2, characterized in that: The condenser tube (6) is also provided with a condenser inlet (61) and a condensed water outlet (62).

4. The dual-purpose membrane separation pretreatment device with distillation reflux according to claim 1, characterized in that: Each of the defoaming devices (32) has: at least one partition main board (321); and At least two obliquely arranged support columns (322) fixed to the partition main plate (321); and A defoaming plate (323) with a plurality of defoaming sieve holes is movably sleeved on the support column (322).

5. The dual-purpose membrane separation pretreatment device with distillation reflux according to claim 4, characterized in that: Two to three foam removal plates (323) each having a plurality of foam removal sieve holes are sleeved on one of the partition main plates (321).

6. The dual-purpose membrane separation pretreatment device with distillation reflux according to claim 5, characterized in that: The number of the partition main boards (321) is 2-5.

7. The dual-purpose membrane separation pretreatment device with distillation reflux according to claim 6, characterized in that: The partition main plate (321) of each defoaming device (32) is fixed in the cylinder (31), or is engaged in the cylinder (31) through a supporting structure (33).

8. The dual-purpose membrane separation pretreatment device with distillation reflux according to claim 7, characterized in that: The top of the support column (322) of each defoaming device (32) extends beyond the top of the partition main board (321) at the highest point to form a protruding fence portion (3221).

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