CN117839249A - Bubbling element with rotational flow function and tower plate provided with same - Google Patents
Bubbling element with rotational flow function and tower plate provided with same Download PDFInfo
- Publication number
- CN117839249A CN117839249A CN202410105198.3A CN202410105198A CN117839249A CN 117839249 A CN117839249 A CN 117839249A CN 202410105198 A CN202410105198 A CN 202410105198A CN 117839249 A CN117839249 A CN 117839249A
- Authority
- CN
- China
- Prior art keywords
- valve
- bubbling
- tray
- cyclone
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005587 bubbling Effects 0.000 title claims abstract description 72
- 239000007787 solid Substances 0.000 claims description 22
- 238000004080 punching Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 33
- 238000012546 transfer Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000002356 single layer Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- 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
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/22—Fractionating columns in which vapour bubbles through liquid with horizontal sieve plates or grids; Construction of sieve plates or grids
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cyclones (AREA)
Abstract
A bubbling element with a rotational flow function and a column plate provided with the bubbling element belong to the technical field of column plates. The bubbling element with the rotational flow function comprises a valve leg, a valve cover and a valve hole, wherein the valve cover and lateral air flow holes formed by the valve leg and the tower plate body are connected with the tower plate body through the valve leg, and the geometric centers of the adjacent three bubbling elements on the tower plate body are in a regular triangle; the invention utilizes the characteristic that the valve leg with the cyclone bubbling element can generate guiding effect and form a rotary flow field, improves the non-uniform gas-liquid cross flow field contact mode in the tower into a uniform cross flow field gas-liquid contact mode with local cyclone effect, so that the energy of gas phase is more consumed in the liquid layer on the plate, the residence time of the gas in the liquid layer of the tower plate can be prolonged, the mass transfer of two phases is enhanced, the mass transfer dead zone is reduced, and the gas-liquid contact is more sufficient, thereby improving the mass transfer efficiency of the tower plate; and the vertical upward dividing speed of the gas phase can be reduced, entrainment is reduced, and the treatment capacity of the tower plate is improved.
Description
Technical Field
The invention belongs to the technical field of tower plates, and particularly relates to a bubbling element with a cyclone function and a tower plate with the bubbling element with the cyclone function.
Background
The rectifying tower is used as the most commonly used equipment in the mass transfer and separation fields, and is widely applied to the fields of petrochemical industry, coal chemical industry, new energy, metal smelting, environmental protection and the like. Along with the improvement of domestic refining integration in recent years, the capacity is rapidly improved and simultaneously related industries are driven to rapidly develop, so that new requirements are provided for the processing capacity and the separation efficiency of the mass separation equipment.
The gas-liquid contact condition in the tower has direct influence on the transfer effect, generally, the gas-liquid contact mode in the plate tower is generally an uneven cross flow field, and the defect of insufficient gas-liquid contact exists, so that the tray treatment capacity and the mass transfer efficiency are lower.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a bubbling element having a swirling function and a tray provided with the bubbling element having the swirling function, which can improve the throughput of the tray.
The invention provides the following technical scheme: the bubbling element with the cyclone function comprises a valve cover, wherein the valve cover is fixed on a tray body through a group of valve legs, a group of airflow holes are formed among the valve cover, the valve legs and the tray body, the valve cover is arranged parallel to the surface of the tray body, and the valve cover and the valve legs are fixedly arranged on the tray body after being integrally formed on the tray body or independently formed by stamping.
Further, the valve cover is of a polygonal structure, and the valve legs are arranged at the valve edges of the valve cover and are vertically fixed on the tray body, and the width of the valve legs is equal to the length of the corresponding valve edges.
Further, the length of the longest diagonal line on the valve cover is 20-60 mm, the length of the valve edge of the valve cover is 10-30mm, the thickness of the valve cover is 0.2-10mm, and the height of the valve leg is 5-20mm.
Further, the valve leg is the same shape as the airflow aperture.
The column plate with the cyclone bubbling elements comprises a column plate body, wherein a group of cyclone bubbling elements are arranged on the column plate body, and three adjacent cyclone bubbling elements are arranged in a regular triangle.
Further, a group of conventional bubbling elements are formed on the tray body in a punching mode, the six adjacent conventional bubbling elements are arranged around one bubbling element with a rotational flow function and are distributed in a regular hexagon, and the corresponding bubbling elements are located in the center of the regular hexagon.
Further, the sector of the circular solid valve faces the valve leg of the bubbling element.
Further, the number of the bubbling elements with the cyclone function on the tray main body accounts for 5-100% of the total number of the bubbling elements.
By adopting the technology, compared with the prior art, the invention has the following beneficial effects:
1) According to the invention, through the bubbling element with the cyclone function, partial rotary motion of the gas is generated through the tower plate, so that the residence time of the gas in the liquid layer is prolonged, the contact time of the gas and the liquid is prolonged, the mass transfer between two phases is promoted, and the mass transfer efficiency of the tower plate is improved; the gas between the tower plates moves upwards in a rotating way, so that the vertical upward gas phase separation speed is reduced, entrainment is reduced, and the treatment capacity of the tower plates is improved;
2) In the invention, the bubbling element with the cyclone function forms an asymmetric structure on the tower plate, so that the air flow hedging between adjacent valve holes is reduced, on one hand, entrainment is reduced to a certain extent, and on the other hand, the liquid leakage from the adjacent valve holes is reduced, namely, the operation elasticity of the tower plate is increased, and the mass transfer efficiency is improved;
3) In the invention, the bubbling element with the cyclone function can be directly punched and integrally formed on the tower plate, or can be singly punched and formed in advance and then welded on the tower plate, so that the manufacturing method is simple, convenient and feasible.
Drawings
FIG. 1 is a schematic diagram of a bubbling element according to the present invention;
FIG. 2 is a schematic diagram of a structure for forming a rotational flow between a bubbling element and a round solid valve in the present invention;
FIG. 3 is a schematic diagram of a control group according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an experimental set according to an embodiment of the present invention;
FIG. 5 is a graph showing the comparison of the leak rates of the experimental trays and the control trays in the examples of the present invention;
FIG. 6 is a graph showing entrainment contrast for an experimental set of trays versus a control set of trays in an embodiment of the invention;
FIG. 7 is a graph comparing mass transfer efficiencies of experimental trays with control trays in an example of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and examples of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
On the contrary, the invention is intended to cover any alternatives, modifications, equivalents, and variations as may be included within the spirit and scope of the invention as defined by the appended claims. Further, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. The present invention will be fully understood by those skilled in the art without the details described herein.
Referring to fig. 1, a bubbling element with a cyclone function includes a valve cover 1 and valve legs 2, wherein the valve cover 1 is fixed on a tray body 3 through a set of valve legs 2, a set of airflow holes 4 are formed among the valve cover 1, the valve legs 2 and the tray body 3, the valve cover 1 is parallel to the surface of the tray body 3, the valve cover 1 and the valve legs 2 are integrally formed on the tray body 3 through stamping, and the valve cover 1 and the valve legs 2 can be separately formed and then fixedly arranged on the tray body 3 through stamping.
Specifically, the valve cover 1 has a polygonal structure, and may be a regular polygon, or may be a regular hexagon or other polygons with unequal adjacent side lengths, and the shape is not limited thereto.
The valve leg 2 with the swirl function bubbling element in the embodiment has a guiding swirl function, when the valve leg 2 encounters the air flow from the front surface of the air flow hole 4 of the adjacent bubbling element, the guiding function is generated, so that the valve leg changes the flow direction to be divided into two parts to flow to two sides, and then a rotating flow field is formed under the combined action of the air flow from the air flow hole 4 beside the valve leg 2 and the air flow hole 4 of the adjacent bubbling element.
As shown in FIG. 3, a planar schematic diagram of a non-rotational flow bubbling element tray is adopted as a comparison group, a common circular solid valve tray (namely, a circular solid valve is selected as a conventional bubbling element), the thickness of a tray body is 3mm, all circular solid valves 5 are directly punched on the tray body 3, a circular solid valve cover is connected with the tray body 3 through three circular solid valve legs, the circular solid valve cover is parallel to the surface of the tray body 3, the diameter of the circular solid valve 5 is 40mm, the length of the circular solid valve leg is 12mm, the width of the circular solid valve leg is 5mm, the lifting height is 10mm, the arrangement directions of all the circular solid valves 5 are consistent, the interval between every two adjacent circular solid valve legs is 120 degrees, and an arc-shaped downcomer is used as a liquid circulation channel.
As shown in fig. 4, a schematic plan view of a tray with a cyclone function bubbling element is used as an experimental group, a bubbling element with a cyclone function is arranged on the basis of a common solid valve tray of a control group, six circular solid valves 5 connected in a ring shape are arranged in a regular hexagon, a valve cover 1 is arranged between the six circular solid valves and is a regular hexagon bubbling element with a cyclone function, and the geometric center of each three adjacent bubbling elements with a cyclone function is in a regular triangle; the valve leg 2 with the cyclone bubbling element is vertically welded and fixed on the tray body 3, the arrangement directions of all the cyclone bubbling elements are kept consistent, and simultaneously, the sector of the circular solid valve 5 with the angle of about 120 degrees is opposite to the valve leg 2 with the cyclone bubbling element; the diameter of the bubbling element with the cyclone function is 46mm, the side length of the valve cover 1 is 23mm, the height of the valve leg 2 is 10mm, the valve leg 2 and the valve side are the same in width, the specification of the round fixed valve 5 in the experimental group is consistent with that of the control group, and the arc-shaped downcomer is also used as a liquid circulation channel.
And testing the hydrodynamic performance and the mass transfer performance of the experimental group tower plate and the control group tower plate, and measuring and comparing data under different gas-liquid loads.
The hydrodynamic property test is carried out in an organic glass tower with the diameter of 1219mm, the diameter of the tower plate body is 1180mm, the tower plate is fixed between the adjacent tower sections by adopting a supporting ring, and the height of the tower section is 600mm; the form of the bubble element tower plate without rotational flow function is similar to that of FIG. 3, 98 circular solid valves are arranged on a single-layer tower plate, and the aperture ratio is 10.55%; the form of the column plate with the cyclone function bubbling element is similar to that of fig. 4, 64 circular solid valves and 33 bubbling elements with the cyclone function are arranged on a single-layer plate, the aperture ratio is 9.14%, and the arrangement ratio of the bubbling elements with the cyclone function is 34%.
The mass transfer performance test is carried out in a steel tower with the diameter of 600mm, the diameter of a tower plate is 610mm, and the tower plate is directly fixed between two adjacent steel tower sections; wherein, the tray without cyclone function bubbling element is shown in figure 3, 25 round solid valves are arranged on the single-layer plate, and the aperture ratio is 10.56%; the column plate with the cyclone function bubbling element is shown in figure 4, 14 round solid valves and 11 bubbling elements with the cyclone function are arranged on the single-layer plate, the aperture ratio is 8.93%, and the arrangement ratio of the bubbling elements with the cyclone function is 44%.
Experiment one:
in the organic glass tower with 1219mm diameter and 600mm plate interval, three identical test or control trays are installed separately, the lower tray is gas distributing plate, the upper tray is liquid distributing plate, the middle tray is test plate, and the liquid leakage collector is installed in the bottom of the lower tray. And (3) taking air-water as an experimental system, measuring and comparing the liquid leakage rates of the two tower plates under different gas-liquid loads.
The test result is shown in FIG. 5, in which the abscissa is the valve orifice kinetic energy factor F 0 The ordinate is the liquid leakage rate, and the spraying density is 20m 3 /(m 2 In the h) step, the corresponding valve hole kinetic energy factor F is set by taking the 10% liquid leakage rate as the lower limit and compared with the bubble element plate with the cyclone function and the bubble element plate without the cyclone function 0 Smaller, i.e. its lower operating limit is lower by about 16%.
Experiment II:
in the organic glass tower with 1219mm diameter and 600mm plate interval, three identical test or control plates are installed separately, the lower plate is used as gas distributing plate, the upper plate is used as liquid distributing plate, the middle plate is used as test plate, and mist collector is installed over the upper plate. And (3) taking air-water as an experimental system, and measuring and comparing entrainment rates of two tower plates under different gas-liquid loads.
The test result is shown in FIG. 6, in which the abscissa is the air tower kinetic energy factor F and the ordinate is the entrainment rate e v It was found that the spray density was 20m 3 /(m 2 H) at a entrainment rate e of 10% v As an upper limit, the corresponding empty column kinetic energy factor F is higher than that of the bubble element tray without the cyclone function, which indicates that the bubble element tray with the cyclone function has a higher upper operation limit and is improved by about 18 percent.
Experiment III:
in a steel tower with the diameter of 600mm and the plate spacing of 600mm, three identical experimental group trays or control group trays are respectively arranged, the lower layer tray is used as a gas distribution plate, the upper layer tray is used as a liquid distribution plate, the middle layer tray is used as a test plate, sampling ports are respectively arranged on a water inlet pipeline at the top of the tower and a water outlet pipeline at the bottom of the tower, air-water-oxygen is used as a medium, oxygen desorption is used as an experimental system, and the total tower efficiency E of the two trays under different gas-liquid loads is measured T And compared.
The test result is shown in FIG. 7, in which the abscissa is the air tower kinetic energy factor F and the ordinate is the full tower efficiency E T It can be seen that the spray density is 20m 3 /(m 2 Under the condition h), when the air column kinetic energy factor F is 0.7-2.0 (m.s-1) (kg.m-3) 0.5, the full column efficiency E of the bubbling element tower plate with the cyclone function T The rotary flow field formed by the bubbling element with the cyclone function can promote gas-liquid mass transfer and improve mass transfer efficiency.
From comparison of the results of the above examples, it is found that the liquid leakage rate and entrainment rate ev of the tray with the cyclone function bubbling element are smaller than those of the tray without the cyclone function bubbling element under the same operation conditions, which means that the tray with the cyclone function bubbling element has greater processing capacity and operation elasticity, and the total column efficiency ET of the tray with the cyclone function bubbling element is higher than that of the tray without the cyclone function bubbling element. Therefore, the bubbling element with the cyclone function is arranged on the tower plate to change the gas-liquid contact mode into a contact mode of a partial rotary flow field, so that the mass transfer between the gas and the liquid can be promoted to be more sufficient, and the mass transfer efficiency and the treatment capacity of the tower plate are improved.
According to the embodiment, by utilizing the characteristic that the valve legs with the cyclone bubbling elements can generate a guiding effect and form a rotary flow field, the contact mode of the uneven gas-liquid cross flow field in the tower is improved to be a uniform cross flow field gas-liquid contact mode with a local cyclone effect, so that the energy of gas phase is more consumed in a liquid layer on a plate, the residence time of the gas in the liquid layer of the tower plate can be prolonged, the mass transfer of two phases is enhanced, the mass transfer dead zone is reduced, and the gas-liquid contact is more sufficient, thereby improving the mass transfer efficiency of the tower plate; and the vertical upward dividing speed of the gas phase can be reduced, entrainment is reduced, and the treatment capacity of the tower plate is improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. The bubbling element with the cyclone function is characterized by comprising a valve cover, wherein the valve cover is fixed on a tray body through a group of valve legs, a group of air flow holes are formed among the valve cover, the valve legs and the tray body, the valve cover is arranged parallel to the surface of the tray body, and the valve cover and the valve legs are fixedly arranged on the tray body after being integrally formed on the tray body through stamping or independently formed through stamping.
2. The bubbling element with cyclone function according to claim 1, wherein the valve cover has a polygonal structure, the valve legs are arranged at the valve edges of the valve cover and vertically fixed on the tray body, and the width of the valve legs is equal to the length of the corresponding valve edges.
3. A bubbling element with cyclone function according to claim 2, wherein the longest diagonal length of the valve cover is 20-60 mm, the length of the valve edge of the valve cover is 10-30mm, the thickness of the valve cover is 0.2-10mm, and the height of the valve leg is 5-20mm.
4. A bubbling element with swirling function according to claim 3, wherein the valve leg is the same shape as the airflow hole.
5. The column plate is characterized by comprising a column plate body, wherein a group of bubbling elements with rotational flow are arranged on the column plate body, and every two adjacent three bubbling elements with rotational flow are arranged in a regular triangle.
6. The tray with cyclone bubbling elements according to claim 5, wherein a group of conventional bubbling elements are formed on the tray body by punching, and adjacent six conventional bubbling elements are arranged around one bubbling element with cyclone function and are arranged in a regular hexagon, and the corresponding bubbling element is positioned at the center of the regular hexagon.
7. A tray provided with a swirl-functional bubbling element according to claim 6, characterised in that the sector of the circular solid valve is facing the valve leg of the bubbling element.
8. The tray according to claim 4, wherein the number of the bubbling elements with cyclone function on the tray main body is 5% -100% of the total bubbling elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410105198.3A CN117839249A (en) | 2024-01-25 | 2024-01-25 | Bubbling element with rotational flow function and tower plate provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410105198.3A CN117839249A (en) | 2024-01-25 | 2024-01-25 | Bubbling element with rotational flow function and tower plate provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117839249A true CN117839249A (en) | 2024-04-09 |
Family
ID=90539956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410105198.3A Pending CN117839249A (en) | 2024-01-25 | 2024-01-25 | Bubbling element with rotational flow function and tower plate provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117839249A (en) |
-
2024
- 2024-01-25 CN CN202410105198.3A patent/CN117839249A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201302422Y (en) | Even air intake guiding device for natural ventilation cooling tower | |
| CN109985570B (en) | Hydrogenation reactor with impact reduction element | |
| CN101912753B (en) | Composite inner component for gas-solid fluidized bed | |
| CN105148667A (en) | High-efficiency desulfuration and dedusting system for flue gas purification | |
| CN102410773B (en) | Liquid-distributing device for falling-film evaporator | |
| CN109985573B (en) | Hydrogenation reactor for improving liquid phase uniformity | |
| CN117839249A (en) | Bubbling element with rotational flow function and tower plate provided with same | |
| CN210057864U (en) | Device for improving wet desulphurization efficiency | |
| CN102386086A (en) | Roller and etching cleaning machine | |
| CN1973993A (en) | Regular packing of helical cylindrical net | |
| CN107789972A (en) | A kind of equal adfluxion liquid device of two-part fume desulfurizing tower and its step | |
| CN109316771A (en) | A kind of novel compositions frozen valve tray | |
| CN204128394U (en) | Adverse current rotary-jet double-curve cooling column | |
| CN103521066B (en) | Force turbulent fume desulfurizing tower | |
| CN203577623U (en) | Forced turbulent flow flue gas desulfurization tower | |
| CN105465895A (en) | Machine room air conditioner with air induction mode improved and water splashing problem solved | |
| CN211487164U (en) | Arrangement structure of nozzles in wet desulphurization tower | |
| CN106140075B (en) | A kind of new tower plate that big flux gas-liquid is uniformly distributed | |
| CN109985575B (en) | Hydrogenation reactor with impact reduction assembly | |
| CN113262518B (en) | Parallel suspension multi-downcomer tower plate | |
| CN213060269U (en) | Efficient desulfurization waste water flue gas waste heat enrichment facility | |
| CN109985571B (en) | Hydrogenation reactor with subtract towards subassembly | |
| CN1724120A (en) | Flue gas desulfurization absorption tower with gas liquid coupling balanced absorption area and its design process | |
| CN1326606C (en) | Regular packing possessing ladder shaped corrugation | |
| CN219024332U (en) | Trough-disc type liquid distributor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |