CN112892415B - High-efficiency petal type liquid redistributor suitable for small-sized gas-liquid mass transfer packed tower - Google Patents
High-efficiency petal type liquid redistributor suitable for small-sized gas-liquid mass transfer packed tower Download PDFInfo
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- CN112892415B CN112892415B CN202110120114.XA CN202110120114A CN112892415B CN 112892415 B CN112892415 B CN 112892415B CN 202110120114 A CN202110120114 A CN 202110120114A CN 112892415 B CN112892415 B CN 112892415B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/008—Liquid distribution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a high-efficiency petal type liquid redistributor suitable for a small-sized gas-liquid mass transfer packed tower. The invention has the beneficial effects that: the structure is simple, the manufacturing cost is low, the installation and the use are convenient, the wall flow can be effectively collected to realize the uniform distribution of liquid, the gas-through sectional area is large, the gas-through sectional area is applied to a low-temperature rectification packed tower, the gas pressure drop is only 6Pa, and the gas-through sectional area can be widely applied to a small packed tower; the guide plate is provided with a plurality of fins which are bent outwards, liquid can flow down on the guide plate and can also flow down on the fins, the liquid flow area is increased, the liquid is uniformly distributed on the cross section of the tower, and meanwhile, a larger gas phase flow area is obtained, so that the gas phase flow is not influenced.
Description
Technical Field
The invention relates to a liquid redistributor, in particular to a high-efficiency petal type liquid redistributor suitable for a small-sized gas-liquid mass transfer packed tower, and belongs to the technical field of gas-liquid mass transfer equipment.
Background
The packing tower is a gas-liquid mass transfer device with a large amount of packing as an interphase contact member in the tower, and the working principle of the gas-liquid mass transfer device is that the liquid can automatically extend along the surface of the packing under the condition that the surface of the packing is wetted by utilizing the larger surface area of the packing, in the operation of the packing tower, gas is fed from the bottom of the tower, is distributed by a gas distribution device (a small-diameter tower is not generally provided with the gas distribution device), continuously passes through gaps of the packing layer in a countercurrent manner with the liquid, on the surface of the packing, the liquid enters the packing layer after being dispersed by a distributor, is spread along the surface of the packing, flows downwards in a film form, and the gas phase and the liquid phase are closely contacted for mass transfer.
However, in the packed column, when the liquid flows down along the packing layer, the liquid tends to be gradually concentrated toward the column wall, so that the liquid flow rate near the column wall gradually increases, and the packing efficiency decreases, which is called wall flow. To reduce the wall flow phenomenon, it is necessary to segment the packing layers and to provide liquid redistribution means between the packing layers when they are high. The liquid under the upper layer of filler is collected by the liquid redistribution device and then is redistributed above the next layer of filler, so that the filler layer keeps higher mass transfer efficiency.
There are various liquid redistributors used in industry, but the diameter of an industrial packed tower is large, the structure of the liquid redistributor is complicated, and the liquid redistributor cannot be used in a small-sized packed tower. The common redistributor in the small packed tower is a truncated cone redistributor which has simple structure and convenient installation, but only plays a role of collecting wall flow to the center, and the gas flow area is small; the inner gear type liquid redistributor increases the gas circulation area by opening a semicircular notch on the guide plate on the basis of the truncated cone type redistributor, but does not improve the liquid distribution capability. The redistributor structure has important influence on liquid distribution and gas circulation in the packed tower, and how to reduce gas resistance and improve liquid distribution is the difficulty of liquid redistributor structural design, so that the application provides the efficient petal type liquid redistributor suitable for the small-size gas-liquid mass transfer packed tower.
Disclosure of Invention
The invention aims to solve the problems and provide the efficient petal type liquid redistributor which is suitable for the small-sized gas-liquid mass transfer packed tower, has the advantages of simple structure, low manufacturing cost, convenient installation and use, capability of effectively collecting wall flow, realization of uniform distribution of liquid by adding fins, larger air through sectional area and convenient installation and use in the small-sized packed tower.
The invention realizes the purpose through the following technical scheme: a high-efficiency petal type liquid redistributor suitable for a small-sized gas-liquid mass transfer packed tower comprises a supporting plate, a guide plate and fins; the utility model discloses a packing tower, including backup pad, guide plate, backup pad and guide plate, the backup pad is used for fixing this redistributor, the guide plate is used for the liquid water conservancy diversion, backup pad 1 is a horizontal annular plate that the internal diameter equals with the packed tower internal diameter, the guide plate is a conical plate, just the inboard edge of guide plate is opened has a plurality of outside crooked fins, the fin is the petal form, the outside limit of guide plate and the inboard edge welding of backup pad, the slope of guide plate body is downward, all scribble hydrophobic or oleophobic material on backup pad and the guide plate.
As a still further scheme of the invention: the width of the supporting plate is less than 10-20% of the inner diameter of the packed tower, the width can meet the requirement of welding strength, the support of the liquid distributor is realized, and a certain liquid collecting effect can be achieved.
As a still further scheme of the invention: the diameter of the circumference of the inner edge of the guide plate is 20-60% of the inner diameter of the packed tower, and if the diameter is too small, the gas flow area is small, and the gas resistance is large; if the size is too large, the liquid flow path is too short to facilitate the flow of liquid to the middle of the packing.
As a still further scheme of the invention: the included angle alpha between the guide plate and the horizontal plane is 20-50 degrees, the included angle is gentle, and liquid can be distributed to the middle of the filler.
As a still further scheme of the invention: the difference between the thickness of the support plate 1 and the guide plate 2 and the wall thickness of the packed tower is 0-3mm, so that the welding stress can be reduced, and the horizontal deviation of a distributor generated by welding deformation is prevented from influencing liquid distribution.
As a still further scheme of the invention: the distance between the bent part of the fin and the edge of the guide plate is 5-20% of the inner diameter of the packed tower, the bent part of the fin and the guide plate are staggered for a certain size, liquid can be distributed to a region with a larger edge, the gas circulation area is increased, and the gas resistance is reduced.
As a still further scheme of the invention: the included angle beta between the fin and the horizontal plane is 50-80 degrees, and compared with the included angle between the guide plate and the horizontal plane, the included angle is larger, so that the liquid can be distributed to the area of the inclined edge of the filler, and the liquid can be uniformly distributed on the surface of the filler.
As a still further scheme of the invention: the shape of the fin is rectangular, fan-shaped, circular, oval or other shapes.
As a still further scheme of the invention: the area of the fins accounts for 30-80% of the area of the guide plate.
As a still further scheme of the invention: the difference between the thickness of the fin and the wall thickness of the packed tower ranges from 0 mm to 3mm.
The invention has the beneficial effects that: the high-efficiency petal type liquid redistributor suitable for the small-sized gas-liquid mass transfer packed tower is reasonable in design; the structure is simple, the manufacturing cost is low, the installation and the use are convenient, the wall flow can be effectively collected to realize the uniform distribution of liquid, the gas passing sectional area is large, the gas pressure drop is only 6Pa when the gas collecting device is applied to a low-temperature rectification packed tower, and the gas collecting device can be widely applied to a small packed tower; the guide plate is provided with a plurality of fins which are bent outwards, liquid can flow down on the guide plate and can also flow down on the fins, the liquid flow area is increased, the uniform distribution of the liquid on the section of the tower is realized, and meanwhile, the larger gas phase flow area is obtained, so that the gas phase flow is not influenced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic side view of the present invention;
FIG. 5 is a schematic view of the mounting structure of the fixed rubber ring of the present invention;
fig. 6 is a schematic view of the structure of the diversion trench of the present invention.
In the figure: 1. backup pad, 2, guide plate, 3, fin, 4, reinforcing plate, 5, fixed rubber circle, 6, draw-in groove and 7, guiding gutter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 6, a high-efficiency petal type liquid redistributor suitable for a small-sized gas-liquid mass transfer packed tower comprises a supporting plate 1, a flow guide plate 2 and fins 3; backup pad 1 is used for fixing this redistributor, guide plate 2 is used for the liquid water conservancy diversion, backup pad 1 is the horizontal annular plate that an internal diameter and packed tower internal diameter equal, guide plate 2 is a conical plate, just 2 inboard edges of guide plate open have a plurality of incurvated fins 3, fin 3 is the petal form, the outside limit of guide plate 2 and the inboard edge welding of backup pad 1, 2 plate body slopes of guide plate are downward, all scribble hydrophobic or oleophobic material on backup pad 1 and the guide plate 2, backup pad 1 is provided with reinforcing plate 4 with the junction dorsal surface of fin 3.
In the embodiment of the invention, the width of the support plate 1 is 10% of the inner diameter of the packed tower, so that liquid can flow to the guide plates 2 and the fins 3 quickly, and the liquid distribution capability of the packing tower is improved.
In the embodiment of the invention, the diameter of the circumference of the inner edge of the guide plate 2 is 20% of the inner diameter of the packed tower, so that the gas flow area is increased.
In the embodiment of the invention, the included angle alpha between the guide plate 2 and the horizontal plane is 30 degrees, and the liquid flowing through the wall can be effectively collected.
In the embodiment of the invention, the outer edge of the supporting plate 1 is provided with the clamping groove 6, and the fixed rubber ring 5 is clamped in the clamping groove 6, so that the redistributor is convenient to be fixed on the inner wall of the packed tower, and meanwhile, liquid can be prevented from flowing away from a gap connecting the redistributor and the packed tower.
In the embodiment of the invention, the distance between the bent part of the fin 3 and the edge of the guide plate 2 is 10% of the inner diameter of the packed tower, so that a larger gas phase flow area is obtained, and the gas phase flow is not influenced.
In the embodiment of the present invention, the angle β between the fin 3 and the horizontal plane is 60 ° to reduce the resistance of the air flowing upward.
In the embodiment of the present invention, the fin 3 is shaped like a fan ring, which facilitates the downward flow of the liquid.
In the embodiment of the invention, the area of the fins 3 accounts for 37.5% of the area of the guide plate, the liquid is uniformly distributed by adding the fins, and the air flow cross-sectional area is larger.
In the embodiment of the invention, the plate surface of the guide plate 2 is provided with the guide groove 7 which is inclined outwards, so that the liquid flowing down along the tower wall can flow downwards along the guide groove 7, and the uniform flow of the liquid is realized.
The working principle is as follows: when the efficient petal-type liquid redistributor suitable for the small-sized gas-liquid mass transfer packed tower is used, the supporting plate 1 is installed in the packed tower, liquid flowing down along the tower wall is diverted to enter the surface of the guide plate 2 and flows down along the surface of the guide plate 2 or the surface of the fin 3, and redistribution of the liquid in the tower is realized. The outward-bent fins 3 on the guide plate 2 provide a flow channel for liquid flowing, have a liquid redistribution function, and provide a larger flow area for gas phase flowing, so that the upward flowing of the gas phase is not affected. The liquid redistributor is arranged in the small-sized packed tower, so that the gas-liquid distribution in the packed tower can be obviously improved, the mass transfer efficiency of the packing layer is improved, the effective height of the packing layer is increased, and more theoretical plates are provided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a high-efficient petal liquid redistributor suitable for small-size gas-liquid mass transfer packed tower which characterized in that: comprises a support plate (1), a guide plate (2) and fins (3); the distributor is characterized in that the support plate (1) is used for fixing the redistributor, the guide plate (2) is used for guiding liquid, the support plate (1) is a horizontal annular plate with the inner diameter equal to that of the packed tower, the guide plate (2) is a conical plate, a plurality of outward-bent fins (3) are arranged on the inner side of the guide plate (2), the fins (3) are petal-shaped, the outer side of the guide plate (2) is welded with the inner side of the support plate (1), the plate body of the guide plate (2) inclines downwards, the support plate (1) and the guide plate (2) are both coated with hydrophobic or oleophobic materials, a reinforcing plate (4) is arranged on the back side surface of the joint of the support plate (1) and the guide plate (2), and a reinforcing plate (4) is arranged on the back side surface of the joint of the support plate (1) and the fins (3);
the width of the support plate (1) is less than 20% of the inner diameter of the packed tower; the diameter of the circumference of the inner edge of the guide plate (2) is 20-60% of the inner diameter of the packed tower; the included angle alpha between the guide plate (2) and the horizontal plane is 20-50 degrees; the outside edge of the supporting plate (1) is provided with a clamping groove (6), and a fixed rubber ring (5) is clamped in the clamping groove (6).
2. The efficient petal type liquid redistributor applicable to the small-sized gas-liquid mass transfer packed tower, according to claim 1, is characterized in that: the included angle beta between the fin (3) and the horizontal plane is 50-80 degrees.
3. The efficient petal type liquid redistributor applicable to the small-sized gas-liquid mass transfer packed tower, according to claim 1, is characterized in that: the shape of the fin (3) is rectangular, fan-shaped, circular, oval or other shapes.
4. The efficient petal-type liquid redistributor suitable for the small-sized gas-liquid mass transfer packed tower as claimed in claim 1, wherein: the area of the fins (3) accounts for 30-80% of the area of the guide plate.
5. The efficient petal type liquid redistributor applicable to the small-sized gas-liquid mass transfer packed tower, according to claim 1, is characterized in that: the surface of the guide plate (2) is provided with a guide groove (7) which is outwards inclined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110120114.XA CN112892415B (en) | 2021-01-28 | 2021-01-28 | High-efficiency petal type liquid redistributor suitable for small-sized gas-liquid mass transfer packed tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110120114.XA CN112892415B (en) | 2021-01-28 | 2021-01-28 | High-efficiency petal type liquid redistributor suitable for small-sized gas-liquid mass transfer packed tower |
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| Publication Number | Publication Date |
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| CN112892415A CN112892415A (en) | 2021-06-04 |
| CN112892415B true CN112892415B (en) | 2022-12-27 |
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| CN202110120114.XA Active CN112892415B (en) | 2021-01-28 | 2021-01-28 | High-efficiency petal type liquid redistributor suitable for small-sized gas-liquid mass transfer packed tower |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463941A (en) * | 2013-09-27 | 2013-12-25 | 南京华基塔业有限公司 | Outer wall flow guide device of built-in tube of packed tower |
| CN203736888U (en) * | 2014-02-24 | 2014-07-30 | 深圳市绿绿达环保有限公司 | Truncated cone type re-distributor of packed tower and packed tower |
| CN204275989U (en) * | 2014-10-16 | 2015-04-22 | 中国石油化工股份有限公司 | A kind of small-sized gas-liquid mass transfer packed tower internal gear type liquid re-distributor |
| CN204182269U (en) * | 2014-10-30 | 2015-03-04 | 重庆长风化学工业有限公司 | Tail gas absorber liquid distribution device |
| US9410750B1 (en) * | 2015-01-23 | 2016-08-09 | Technip Process Technology, Inc. | Gas distributor for heat exchange and/or mass transfer column |
| CN207928756U (en) * | 2018-01-23 | 2018-10-02 | 南京英斯派工程技术有限公司 | A kind of Hole Type Liquid Distributor of packed tower |
| CN209917895U (en) * | 2019-03-23 | 2020-01-10 | 安徽晋煤中能化工股份有限公司 | Small-tower-diameter packed tower wall flow prevention device |
| CN211836933U (en) * | 2019-12-10 | 2020-11-03 | 苏州仕净环保科技股份有限公司 | Liquid redistributor and packed tower |
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2021
- 2021-01-28 CN CN202110120114.XA patent/CN112892415B/en active Active
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| CN112892415A (en) | 2021-06-04 |
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