CN215653884U - Rectifying tower - Google Patents
Rectifying tower Download PDFInfo
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- CN215653884U CN215653884U CN202122050763.5U CN202122050763U CN215653884U CN 215653884 U CN215653884 U CN 215653884U CN 202122050763 U CN202122050763 U CN 202122050763U CN 215653884 U CN215653884 U CN 215653884U
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- rectification
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Abstract
The utility model relates to the technical field of rectification equipment, in particular to a rectification tower, which comprises: the tower body is internally provided with a rectification cavity, the upper end of the tower body is provided with a gas-phase discharge port, and the lower end of the tower body is provided with a liquid-phase discharge port; the sieve plates are arranged in the tower body, divide the interior of the rectification cavity into a plurality of layers, and are communicated with each other through a liquid descending part; the side wall of the rectification cavity is matched with the surface of the sieve plate to form a liquid phase flow channel; the cross section of the liquid phase flow channel, which is perpendicular to the liquid phase flow direction, is square. According to the utility model, the cross section of the liquid flow channel perpendicular to the liquid flowing direction is designed to be square, so that liquid back mixing is avoided to the greatest extent, and the problems of back mixing phenomenon caused by the influence of the tower body and influence on the rectification efficiency are reduced.
Description
Technical Field
The utility model relates to the technical field of rectifying equipment, in particular to a rectifying tower.
Background
The rectifying tower is a tower type vapor-liquid contact device for rectifying. By utilizing the property that each component in the mixture has different volatility, namely the vapor pressure of each component is different at the same temperature, the light component (low-boiling-point substance) in the liquid phase is transferred into the gas phase, and the heavy component (high-boiling-point substance) in the gas phase is transferred into the liquid phase, thereby realizing the purpose of separation.
Present rectifying column generally all is cylindrical structure, and liquid flow is the convection current form mostly, combines columniform tower body, because the influence of tower body, can take place the phenomenon of backmixing at the rectification in-process to influence rectifying column's rectification efficiency.
How to solve the back-mixing phenomenon is a current urgent task.
Disclosure of Invention
The utility model aims to provide a rectifying tower, which is characterized in that the cross section of a liquid flow channel perpendicular to the flowing direction of liquid is designed to be square, so that liquid back-mixing is avoided to the greatest extent, and the problems of back-mixing phenomenon caused by the influence of a tower body and influence on rectifying efficiency are reduced.
The purpose of the utility model is realized as follows:
a rectification column comprising:
the tower body is internally provided with a rectification cavity, the upper end of the tower body is provided with a gas-phase discharge port, and the lower end of the tower body is provided with a liquid-phase discharge port;
the sieve plates are arranged in the tower body, divide the interior of the rectification cavity into a plurality of layers, and are communicated with each other through a liquid descending part; the side wall of the rectification cavity is matched with the surface of the sieve plate to form a liquid phase flow channel;
the cross section of the liquid phase flow channel, which is perpendicular to the liquid phase flow direction, is square.
Preferably, a partition board is vertically arranged in the rectification cavity, the partition board divides the liquid phase flow channel into a first flow channel and a second flow channel, and a flow guide hole is formed in the end part of the partition board and used for communicating the first flow channel with the second flow channel;
the liquid descending part is positioned at the other end of the clapboard;
and the liquid phase enters the second flow channel from the first flow channel of the upper layer of rectification cavity through the flow guide holes, reversely flows to the liquid descending part and then flows into the first flow channel of the lower layer of rectification cavity.
Preferably, the partition plate is provided with a plurality of balance holes, and each balance hole is respectively arranged in the middle of the liquid phase flow channel and used for balancing the liquid level between the first flow channel and the second flow channel.
Preferably, the tower body has vertically arranged tower plates, which are parallel to the partition plates and perpendicular to the sieve plates to form square liquid phase flow passages.
Preferably, the sieve plate is uniformly distributed with the inclined platforms, the sieve plate is provided with guide holes, and the guide holes are communicated with the lower end surface of the sieve plate and the vertical side surfaces of the inclined platforms;
when the gas phase passes through the guide holes, the liquid phase between the inclined platforms is pushed to flow, so that the liquid phase flows on the sieve plate which is horizontally arranged.
Preferably, the inclined direction of the inclined platform in the first flow passage is opposite to the inclined direction of the inclined platform in the second flow passage.
Preferably the lowermost end of the ramp is located on the upper end face of the screening deck.
Preferably, a plurality of sieve holes are further formed in the sieve plate and distributed in gaps among the inclined platforms.
Preferably, the lower end of the tower body is provided with an air inlet, and the air inlet inside the tower body is provided with a flow stabilizing plate for dispersing the gas phase entering the tower body.
Preferably, an overflow plate is installed on the sieve plate to prevent the liquid phase from flowing reversely.
Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:
1. the cross section of the liquid flow channel perpendicular to the liquid flowing direction is designed to be square, so that the obstruction of the inner wall of the rectifying cavity to the liquid flowing can be avoided, the liquid flowing is smoother, the back mixing of the liquid is avoided to the maximum extent, and the rectifying efficiency of the rectifying tower is ensured.
2. According to the utility model, the first flow channel and the second flow channel are formed on each layer of sieve plate, and liquid flows in the first flow channel and then reversely flows in the second flow channel, so that the liquid concentration on each layer of sieve plate is more uniform, and the rectification effect is better.
Drawings
Fig. 1 is one of the schematic internal structural views of a rectifying column according to embodiment 1 of the present invention.
Fig. 2 is a second schematic view of the internal structure of the rectifying column in example 1 of the present invention.
Fig. 3 is a schematic structural view of a separator according to embodiment 1 of the present invention.
Figure 4 is a top and side view of a screen panel of example 1 of the present invention.
Fig. 5 is a partial structural schematic view of a screen plate according to embodiment 1 of the present invention.
Fig. 6 is a partial cross-sectional view of a ramp and a screen deck of example 1 of the present invention.
Fig. 7 is an enlarged view of the area a of fig. 1.
Reference numerals:
1. a tower body; 2. a gas phase discharge port; 3. a liquid phase discharge port; 4. a sieve plate; 5. a liquid dropping part; 6. a column plate;
7. a liquid phase flow channel; 8. a partition plate; 9. a first flow channel; 10. a second flow passage; 11. a flow guide hole; 12. a balance hole;
13. a sloping table; 14. a guide hole; 15. screening holes; 16. an air inlet; 17. a flow stabilizer; 18. an overflow plate;
19. and a liquid inlet hole.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Example 1:
as shown in fig. 1 and 2, a rectifying tower comprises a tower body 1, a sieve plate 4 and a liquid descending part 5;
the rectifying tower is characterized in that the tower body 1 is square, a rectifying cavity is arranged in the rectifying tower, the upper end and the lower end of the tower body 1 are both arranged in a conical manner, the upper end of the tower body is provided with a gas phase discharge port 2, the lower end of the tower body is provided with a liquid phase discharge port 3, the gas phase discharge port 2 and the liquid phase discharge port 3 are preferably arranged in the middle respectively and are positioned on the same straight line, and meanwhile, the upper end of the tower body 1 is provided with a liquid inlet hole 19 for injecting a liquid phase to be rectified; the lower end is provided with an air inlet 16 for accessing high-temperature gas phase;
the sieve plates 4 are horizontally arranged in the rectification cavity, the rectification cavity is uniformly divided into a plurality of layers of spaces, and each layer of sieve plates 4 are communicated through a liquid descending part 5;
the tower body 1 is provided with a tower plate 6, the tower plate 6 in the embodiment refers to a side wall which is vertically arranged on the tower body 1, namely the inner wall of the rectification cavity, the tower plate 6 is vertical to the sieve plate 4, the inner wall of the tower plate 6 is matched with the surface of the sieve plate 4 to form a liquid phase channel, and a liquid phase entering from the liquid inlet hole 19 enters the liquid phase channel and flows through the liquid phase channel after being guided by the liquid descending part 5.
The cross section of the liquid phase channel formed in the above, which is perpendicular to the flow direction of the liquid phase, is square.
During rectification, a liquid phase flows in a liquid phase channel, meanwhile, a high-temperature gas phase flows from bottom to top, when the gas phase passes through the sieve plates 4, mass transfer is carried out between the gas phase and the liquid phase on the same sieve plate 4, light components (low-boiling-point substances) in the liquid phase are transferred to the gas phase, and heavy components (high-boiling-point substances) in the gas phase are transferred to the liquid phase, so that the purpose of separation is realized. This is the principle of the rectification column.
The gas phase is discharged from a gas phase discharge port 2 for uniform collection; the liquid phase finally flows into a specific area from the liquid phase discharge port 3, and the rectification is completed.
The utility model provides a design is square with liquid channel design, avoids the passageway to produce the hindrance to the liquid phase flow to take place the back mixing phenomenon, make the liquid flow more smooth and easy, thereby the at utmost avoids the back mixing of liquid, thereby guarantees the rectification efficiency of rectifying column.
Further, with reference to fig. 1-3, a partition plate 8 is vertically disposed in the tower body 1, the partition plate 8 is connected to all the sieve plates 4, and the partition plate 8 and the tower plates 6 are disposed in parallel. The partition plate 8 divides the liquid phase flow channel 7 of each layer into a first flow channel 9 and a second flow channel 10 which are parallel to each other, and the end of the partition plate 8 is provided with a diversion hole 11, for convenience of understanding, the diversion hole 11 is provided at the right end of the partition plate 8, and the liquid descending part 5 is installed at the left end of the partition plate 8.
The left and right end portions are not limited in practice and can be selected according to the actual situation.
The liquid phase of the previous layer flows into the first flow channel 9 through the liquid descending part 5, and the flow direction is indicated by sa 1; when the liquid phase flows to the diversion hole 11, the liquid phase flows into the second flow passage 10, flows reversely in the second flow passage 10, the flow direction is represented by sb1 (represented by a dotted line in the figure), the liquid phase flows to the first downcomer 5 of the current layer, flows into the first flow passage 9 of the next layer through the first downcomer 5, and the above-mentioned flow action is repeated.
When the liquid phase flows in the same layer, the concentration is the highest when the liquid phase enters the first flow channel 9, the concentration is the lowest when the liquid phase flows out of the second flow channel 10, and the concentration is in the middle when the liquid phase flows to the diversion hole 11.
After the design, the concentrations of the left end and the right end in the liquid phase on the same layer can be ensured to be approximately the same, so that the concentration of the liquid on each layer of sieve plate 4 is more uniform, and the rectification effect is better.
Meanwhile, because the first flow channel 9 and the second flow channel 10 are both horizontally arranged, liquid level fall does not exist, and the gas phase uniformly passes through the sieve plate 4 in the rectification process.
If the liquid thickness difference of the liquid phase on the sieve plate 4 on the same layer is larger, the gas phase can not normally pass through the place with the thicker liquid phase, so that the flow velocity of the rising gas phase in the rectifying cavity is uneven, the gas flow resistance is increased, and the operation energy consumption of the rectifying tower is further increased.
Meanwhile, the area on the sieve plate 4 for effective rectification is reduced, and the working efficiency of the rectifying tower is influenced. The horizontal arrangement can well avoid the occurrence of the situations.
In order to further ensure the uniformity of the liquid level of the same layer, a plurality of balance holes 12 are formed in the partition plate 8, and each balance hole 12 is respectively arranged in the middle of the liquid phase flow channel 7 and used for balancing the liquid level between the first flow channel 9 and the second flow channel 10.
The flow of the liquid phase on the horizontal screen deck 4 is realized by the structure below the channel.
As shown in fig. 4-6, the inclined platforms 13 are uniformly distributed on the sieve plate 4, the inclined platforms 13 may be sequentially distributed in a staggered manner, and the sieve plate 4 is provided with guide holes 14, and the guide holes 14 communicate the lower end surface of the sieve plate 4 with the vertical inclined surfaces of the inclined platforms 13.
The liquid phase is arranged between the inclined platforms 13, and when the gas phase passes through the guide holes 14, the gas phase is sprayed out of the guide holes 14, so that the liquid phase between the inclined platforms 13 is pushed to move, the liquid phase on the horizontal plane moves on the sieve plate 4, and mass exchange occurs in the pushing process.
The design of the sloping platforms 13 and the guide holes 14 not only solves the problem of movement of liquid phase on the horizontal sieve plate 4, but also can carry out mass exchange and purification.
In order to realize the reverse flow of the second flow passage 10, the inclined platform 13 in the second flow passage 10 is arranged in the opposite direction of the inclined platform 13 in the first flow passage 9.
The lowest end of the sloping platform 13 is positioned on the upper end surface of the sieve plate 4.
Thus, the liquid phase is prevented from generating back mixing between the lowest end of the inclined platform 13 and the sieve plate 4, and the rectification efficiency is ensured.
In order to further increase the rectification efficiency, sieve holes 15 are arranged on the sieve plates 4 at the gaps between the inclined platforms 13 to carry out rectification together with the guide holes 14, so that the sieve plates 4 are fully utilized, and the overall rectification efficiency can be improved.
Further, as shown in fig. 1, in order to ensure that the gas phase can be relatively uniform when entering the rectification cavity, a gas inlet 16 in the rectification cavity is provided with a flow stabilizing plate 17, the flow stabilizing plate 17 is similar to a mushroom shape, the gas phase is firstly sprayed onto the arc-shaped end surface of the flow stabilizing plate 17, and the gas phase can be dispersed to enter the lowest layer of the tower body 1 through dispersion of the end surface, so that the rectification efficiency of the sieve plate 4 at the lowest layer is ensured, and the condition of non-uniform gas flow is avoided as much as possible.
As shown in fig. 7, in order to avoid the occurrence of the backflow, the overflow plate 18 is attached to the sieve plate 4, and the overflow plate 18 is mainly attached to the lower side surface of the port of the downcomer 5.
Example 2:
the structure of this embodiment is basically the same as that of the other embodiments, and the difference is that: the tower plate 6 and the sieve plate 4 are matched, a square liquid phase flow channel 7 can be formed in the tower body 1, and the back mixing phenomenon can be avoided as far as possible.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A rectification column, comprising:
the tower body (1) is internally provided with a rectification cavity, the upper end of the tower body is provided with a gas phase discharge port (2), and the lower end of the tower body is provided with a liquid phase discharge port (3);
the sieve plates (4) are arranged in the tower body (1), divide the interior of the rectification cavity into a plurality of layers, and are communicated with each other through a liquid descending part (5); the side wall of the rectification cavity is matched with the surface of the sieve plate (4) to form a liquid phase flow channel (7);
the cross section of the liquid phase flow channel (7) perpendicular to the liquid phase flow direction is square.
2. The rectification column according to claim 1, wherein:
a partition plate (8) is vertically arranged in the rectifying cavity, the liquid phase flow channel (7) is divided into a first flow channel (9) and a second flow channel (10) by the partition plate (8), a flow guide hole (11) is formed in the end part of the partition plate (8), and the flow guide hole (11) is used for communicating the first flow channel (9) with the second flow channel (10);
the liquid dropping part (5) is positioned at the other end of the clapboard (8);
the liquid phase enters a second flow channel (10) from the first flow channel (9) of the upper layer of rectification cavity through the diversion holes (11), reversely flows to the liquid descending part (5), and then flows into the first flow channel (9) of the lower layer of rectification cavity.
3. The rectification column according to claim 2, wherein:
the partition plate (8) is provided with a plurality of balance holes (12), and each balance hole (12) is respectively arranged in the middle of the liquid phase flow channel (7) and used for balancing the liquid level between the first flow channel (9) and the second flow channel (10).
4. The rectification column according to claim 1, wherein:
the tower is characterized in that tower plates (6) of the tower body (1) are vertically arranged, the tower plates (6) are parallel to the partition plates (8), and the tower plates (6) are perpendicular to the sieve plates (4), so that square liquid phase flow channels (7) are formed.
5. The rectification column according to claim 1, wherein:
the sieve plate (4) is uniformly distributed with the inclined tables (13), the sieve plate (4) is provided with guide holes (14), and the guide holes (14) are communicated with the lower end surface of the sieve plate (4) and the vertical side surfaces of the inclined tables (13);
when the gas phase passes through the guide holes (14), the liquid phase between the inclined platforms (13) is pushed to flow, so that the liquid phase flows on the sieve plate (4) which is horizontally arranged.
6. The rectification column according to claim 5, wherein:
the inclined direction of the inclined platform (13) in the first flow channel (9) is opposite to the inclined direction of the inclined platform (13) in the second flow channel (10).
7. The rectification column according to claim 5, wherein:
the lowest end of the inclined platform (13) is positioned on the upper end surface of the sieve plate (4).
8. The rectification column according to claim 5, wherein:
a plurality of sieve holes (15) are further formed in the sieve plate (4), and the sieve holes (15) are distributed in gaps among the inclined platforms (13).
9. The rectification column according to claim 1, wherein:
the gas-liquid separation tower is characterized in that the lower end of the tower body (1) is provided with a gas inlet (16), and a flow stabilizing plate (17) is arranged at the gas inlet (16) inside the tower body (1) and used for dispersing gas phase entering the tower body (1).
10. The rectification column according to any one of claims 1 to 9, wherein:
and an overflow plate (18) is arranged on the sieve plate (4) and is used for preventing the liquid phase from reversely flowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122050763.5U CN215653884U (en) | 2021-08-28 | 2021-08-28 | Rectifying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122050763.5U CN215653884U (en) | 2021-08-28 | 2021-08-28 | Rectifying tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215653884U true CN215653884U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122050763.5U Active CN215653884U (en) | 2021-08-28 | 2021-08-28 | Rectifying tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215653884U (en) |
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2021
- 2021-08-28 CN CN202122050763.5U patent/CN215653884U/en active Active
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