CN1019747B - Oblate-ring filler in arc web bent inward - Google Patents
Oblate-ring filler in arc web bent inward Download PDFInfo
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- CN1019747B CN1019747B CN89109152A CN89109152A CN1019747B CN 1019747 B CN1019747 B CN 1019747B CN 89109152 A CN89109152 A CN 89109152A CN 89109152 A CN89109152 A CN 89109152A CN 1019747 B CN1019747 B CN 1019747B
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- 239000000945 filler Substances 0.000 title claims abstract description 88
- 238000005452 bending Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 36
- 239000007788 liquid Substances 0.000 abstract description 27
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 21
- 239000002184 metal Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009102 absorption Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- -1 light industry Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/30—Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/30—Details relating to random packing elements
- B01J2219/302—Basic shape of the elements
- B01J2219/30223—Cylinder
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The present invention is a kind of oblate-ring filler in arc web bent inward, belong to chemical separation process and apparatus field, longitudinal middle part at flat ring ring wall has along equally distributed 3 rectangular windows of ring week, two minor faces of each rectangular window are connected with curved arc rib in, the width of rectangular window is 0.4～0.6 of a packed height, and the ratio of height to diameter of flat ring is 0.2～0.4.This filler mass transfer effect is good, and is simple in structure, easy to manufacture, mechanical strength is high, is not only applicable to gas-liquid mass transport process, is particularly useful for liquid-liquid mass transport process.
Description
The present invention is an oblate-ring filler in arc web bent inward, belongs to chemical separation process and apparatus field.
Packed tower is a kind of time-honored fluid contacting equipment, is used to carry out two between gas (vapour)-liquid, the liquid-liquid and contacts to realize quality transmission or chemical reaction.Packed tower has been widely used in processes such as the essence of chemical industry, oil, light industry, medicine, environmental protection, field of food is stayed, absorbed, extraction, washing.
Packed tower is generally a vertical cylindrical shell, and one or more layers filler is equipped with in inside, and is equipped with necessary fluid introducing, ejector and other internals.The more application situation of packed tower is that two-phase fluid is counter-current flow in the tower, and heavy phase gently mutually from bottom to top, contacts in packing layer from top to bottom.Under the minority applicable cases, two-phase contacts in packing layer with the cross-flow or other the type of flow.
The performance of packed tower depends on the performance of used filler to a great extent.Tower packing can be divided into granular pattern filler and regular type filler by its structure.The granular pattern filler is the filler particles body with certain geometrical shape and size one by one, can be seated in the mode of in bulk or whole block in the tower, so-called in bulkly is meant fillers dispersed ground, puts into tower randomly; Whole block refers to by certain rule, in an orderly manner filler is arranged in the tower, regular type filler is made up of many filler unit bodies with same geometry, is seated in the tower in whole mode of building.
The present invention is the granular pattern tower packing.
The granular pattern filler mainly can be divided into three major types by its shape, i.e. the ring saddle packing that combines of ring packing, saddle packing and annular and saddle type.
The filler with fixed geometry the earliest is Raschig ring (Raschig ring) filler, and later ring packing all is the improvement result on the Raschig ring basis basically.
Pall ring (Pall ring) filler is the once successful improvement to the Raschig ring filler, make ring packing by entity environment-development generate perforate ring, the exploitation of later many fillers is mostly again to be further improvement on the Pall ring basis, and the performance of many new packings also is to compare with Pall ring and its quality is described.
The Pall ring filler is developed in the forties by German BASF AG, and its structure as shown in Figure 1.Its ratio of height to diameter is 1; 1, on ring wall, left the window of the sheet that lolls in two rows have, every layer of fenestra has 5 tongue pieces, each tongue piece bend in the ring, points to and encircle the heart, two-layer up and down position of window staggers mutually, institute's windowing can make two-phase pass through on the Pall ring ring wall, than Raschig ring bigger improvement is arranged so the fluid in the packing layer distributes.Compare with Raschig ring, the disposal ability of Pall ring improves, resistance reduces, mass-transfer efficiency increases.
In ring packing, change of shape maximum with ladder (Cascade Mini-ring) filler that develops by Britain Mass Transfer company the beginning of the seventies, this filler has changed the straight traditionally custom through equating with height, has reduced the height of ring and has increased the taper flange at an end that encircles.
U.S. Norton company is typical case's representative of ring saddle packing in the becket intalox saddle (Intalox metal tower packing) of exploitation in 1977, as shown in Figure 2, the becket intalox saddle combines the structure of perforate ring filler and general saddle packing dexterously, its half one is a semi-round ring shape, has the sheet that lolls in opening and to two pair; Second half two ends have flange, form the square saddle type that has window.
The sidewall of becket Intalox saddle is opened wide more than Pall ring; Therefore its resistance reduces, and flux increases.The space of this filler is more continuous, so the fluid distribution situation improves, and seldom produces the dead angle that remains in a standstill in the packing layer, and mass-transfer efficiency increases.
The most approaching with cascade ring filler and another kind of becate filler and the of the present invention filling-material structure close in existing filler with it.Now details are as follows with these two kinds of fillers.
The structure of cascade ring filler is shown in accompanying drawing 3～5.Fig. 3, the 4th, its side view and half sectional view, Fig. 5 are its expanded views.Have 5 rectangular windows on the ring wall of cascade ring, the sheet metal that opening cuts bends to 5 tongue pieces in ring, and the height of cascade ring is through being 0.5 than (H/D among Fig. 3).1 for constituting the sheet metal of filler among the figure, and 2 is tongue piece; 3 is the opening on the ring wall; 4 is the taper flange of filler one end.
Because the cascade ring filler reduces half than the height of Pall ring, when being used for gas-liquid system, make that walk around the gas average path that the filler outer wall flows through shortens dramatically, reduced the resistance of gas by packing layer, because cascade ring is shorter, its center of gravity reduces, increase it and thrown in the systematicness that arrange the back, the carrying out that helps mass transfer, the taper turnup structure of cascade ring one end, making between the filler with the line contact is that main transformer is based on a contact, has so not only increased the space between the filler, reduced the resistance when gas flows through, and these contact points can also become liquid and converge spaced point along what filling surface flowed, can promote the Surface Renewal of liquid film, help improving mass-transfer efficiency, therefore, the performance of cascade ring has had further raising again than Pall ring.
The ratio of height to diameter of cascade ring is fixed as 0.5, and this has limited its performance, if further reduce ratio of height to diameter, the mass-transfer performance of filler can get a greater increase.
The difference that Britain rectifying company (Fractionation Research Limited) has developed this filler of another kind of becate filler (patent No. Ger.Offen.2610459) and cascade ring is that it does not have the taper flange, and the opening on the ring wall is that the shape of trapezoidal and tongue piece is different.Simultaneously because no taper flange is provided with snap close for strengthening mechanical performance at the filler seam crossing.The ratio of height to diameter of this filler is side view and the vertical view that constitutes the bullion sheet of filler less than 1. Fig. 6,7, Fig. 8 is the vertical view of filler, Fig. 9 is the stereogram of filler, Figure 10,11 is the detailed structure of seam snap close, and 5 for constituting the sheet metal of filler among the figure, and 6 is the trapezoid-shaped openings on 5,7 sheets that loll in being, 8 is lockhole, and 9 is the auricle that forms towards lockhole 8 backs, and 10 is snap close.
The seam buckle structure complexity of this filler is for processing and manufacturing has brought very big inconvenience.
Up to the present, nearly all filler (comprising above-mentioned several filler) all designs at gas-liquid mass transferring processes such as rectifying, absorptions.
There are very big difference in mass transfer between liquid-liquid and the mass transfer between solution-air on mechanism.In liquid-liquid mass transfer equipment, one is discrete form and another is conitnuous forms mutually mutually, and the two is in contact with one another, and mass transfer carries out between dispersed phase drop and continuous phase fluid, and mass transfer area is by the surface area decision of drop, and the more little then mass transfer surfaces of drop is long-pending big more.Do not have churned mechanically equipment for packed tower is this, filler just seems extremely important to the peptizaiton of drop.In addition, if the wetting filler of decentralized photo then can be in the filling surface film forming, the mass-transfer efficiency of tower will reduce greatly, and gas-liquid mass transferring is to carry out between the air-flow of turbulence and liquid film, and mass transfer area depends on that filler is by the wetting surface area of liquid phase.
The difference of above-mentioned two class mass transport processes on mechanism causes some filling-material structure to present advantage in the gas-liquid mass transferring process, then shows as shortcoming in the liquid-liquid mass transfer process.Such as, the turnup structure of metal ring intalox and cascade ring filler is said the gas-liquid mass transferring process, make that being contacted by line between the filler is that main transformer is that a contact is main, can reduce the overlapping between the filler, increase the Surface Renewal of wetted surface area and promotion liquid film, help improving mass-transfer performance.To liquid-liquid system, the existence of flange not only can not play good cutting, peptizaiton to decentralized photo, and can make droplet congregating in the flange corner, thus increasing liquid-drop diameter, reduce mass transfer area and may form the dead band that mass transfer does not take place, these all are unfavorable for the mass transfer between liquid-liquid.
Generally speaking, take the whole orderly filler of arranging of type of feed of building to make the distribution of tower inner fluid more even, can suppress axial mixing effectively.Therefore, its mass-transfer performance often is better than dumped packing.Mackowiak etc. take two kinds of types of feed of block in bulk and whole to compare to granular filler, the mass-transfer efficiency that the result shows the latter is than the former is high nearly one times, structured packing has demonstrated fully orderly arrangement characteristics, application in the gas-liquid mass transferring process has also obtained success, but because the design feature and the surface characteristic of existing structured packing, make decentralized photo become membranaceous at filling surface when being used for liquid-liquid system easily and flow, this will reduce mass-transfer efficiency greatly.Compare with granular filler in addition, structured packing also exists makes and installs complicated shortcoming.Equally, the whole block installation of granular filler also is very difficult.Therefore, if can make granular filler when in bulk, present the characteristics of orderly arrangement, the combination property of filler will be improved greatly.In fact, two kinds of becate fillers introducing have previously tentatively embodied these characteristics.
The objective of the invention is the characteristics at the liquid-liquid mass transfer process, develop a kind of high-efficient granule filler that demonstrates fully orderly arrangement characteristics when in bulk, it is simple, easy to manufacture to make every effort to filling-material structure, the mechanical strength height.
The present invention is a kind of oblate-ring filler in arc web bent inward, form with the interior bending that links to each other with window by the flat ring that has window, it is characterized in that having along equally distributed 3 rectangular windows of ring week at the longitudinal middle part of flat ring ring wall, two minor faces of each rectangular window are connected with curved arc rib in, the width of rectangular window is 0.4～0.6 of a packed height, and the ratio of height to diameter of flat ring (H/D among Figure 12) is 0.2～0.4.
Consulting accompanying drawing 12～14 below describes the present invention.
Figure 12, the 13rd, the front view of filler of the present invention and cutaway view, Figure 14 is its expanded view, 11 for constituting the sheet metal of filler among the figure, 12 is the rectangular window on the ring wall, 13 is the interior curved arc rib that forms behind the opening, utilize the given width shown in Figure 14 and the sheet metal of length, through otch, bend to ring, arc making can make the filler of being invented, and utilizes mould that above-mentioned a few procedure is once finished.
The present invention has reached its intended purposes, and oblate-ring filler in arc web bent inward can promote the dispersion of drop because it does not have flange, increases mass transfer area and mass-transfer efficiency between liquid-liquid.Because its ratio of height to diameter is very low, the center of gravity of filler is reduced, can be when in bulk a large amount of one-tenth levels or near horizontally, present systematicness preferably, thereby the tower inner fluid is evenly distributed, suppress effectively axially to mix, improve mass-transfer efficiency.Again since this filler the chip architecture that lolls in Pall ring, the cascade ring etc. is changed in curved arc rib, thereby improved the mechanical strength of filler, and can avoid the complicated buckle structure of seam crossing, make processing and manufacturing fairly simple.Because interior curved arc rib filler keeps and has developed some advantage of existing filler, so it also is applicable to the gas-liquid mass transferring process.
For institute's invention filler and existing filler are compared, in φ 100mm packed tower, utilize liquid-liquid system to carry out experimental study, measured the axial blended data of water of three kinds of fillers such as metal Pall ring, metal ring intalox and interior curved arc shape rib flat ring and the mass transfer data of n-butanol-butanedioic acid-aqueous systems.
Accompanying drawing 15 is depicted as the experimental result of the axial diffusion coefficient of two kinds of sizes, three kinds of fillers.Axial diffusion coefficient is big more to show that axially mixing is serious more in the tower, unfavorable more to mass transport process.Accompanying drawing 16 is the experimental result of the apparent height of transfer unit of three kinds of 25mm fillers.Apparent height of transfer unit is high more, and then to finish the required tower height of given mass transfer requirement high more, illustrates that the mass-transfer performance of filler is poor more.As can be seen from the figure, the axial diffusion coefficient Ec and the apparent height of transfer unit Hoxp of oblate-ring filler in arc web bent inward (being called for short flat ring) all are lower than metal Pall ring and the becket intalox saddle that is compared, and illustrate that institute's invention filler has preferable performance.
In sum, that the oblate-ring filler in arc web bent inward of being invented has is simple in structure, mechanical strength is high, axially mix advantages such as little, that mass-transfer performance is good, be specially adapted to extraction and wait the liquid-liquid mass transfer process, as lube oil finishing, solvent recovery, waste liquid dephenolize etc.Also can be used for simultaneously gas-liquid mass transferring processes such as rectifying, absorption.If in technological transformation, replace fillers such as Raschig ring, Pall ring and ring intalox with this kind filler, will improve the mass-transfer efficiency of device greatly, obtain substantial economics.
Three specific embodiments of the present invention are as follows:
(1) diameter 75mm filler
Packed height 15mm.Ratio of height to diameter 0.2, A/F 8mm accounts for 0.53 of packed height.
(2) diameter 25mm filler
Packed height 9mm, ratio of height to diameter are 0.36, and A/F 4mm accounts for 0.44 of packed height.
(3) diameter 16mm filler
Packed height 6.5mm, ratio of height to diameter 0.4, A/F 3mm accounts for 0.46 of packed height.
Claims (1)
1, a kind of oblate-ring filler in arc web bent inward, form with the interior bending that links to each other with window by the flat ring that has window, the longitudinal middle part that it is characterized in that flat ring ring wall has along equally distributed 3 rectangular windows of ring week, two minor faces of each rectangular window are connected with curved arc rib in, the width of rectangular window is 0.4～0.6 of a packed height, and the ratio of height to diameter of flat ring is 0.2～0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89109152A CN1019747B (en) | 1989-12-14 | 1989-12-14 | Oblate-ring filler in arc web bent inward |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89109152A CN1019747B (en) | 1989-12-14 | 1989-12-14 | Oblate-ring filler in arc web bent inward |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1052435A CN1052435A (en) | 1991-06-26 |
| CN1019747B true CN1019747B (en) | 1992-12-30 |
Family
ID=4857892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89109152A Expired CN1019747B (en) | 1989-12-14 | 1989-12-14 | Oblate-ring filler in arc web bent inward |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019747B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1038911C (en) * | 1995-12-22 | 1998-07-01 | 清华大学 | Flexible flat plum blossom filler |
| CN1088394C (en) * | 1998-07-27 | 2002-07-31 | 张延丰 | Ruikepaike loose dumped tower-filler |
| CN100391588C (en) * | 2006-04-04 | 2008-06-04 | 湘潭大学 | Tapered spiral filling |
| CN104971685A (en) * | 2015-06-26 | 2015-10-14 | 苏州市科迪石化工程有限公司 | Three-layer cascade ring packing |
| CN105642853B (en) * | 2016-01-28 | 2017-12-22 | 北京科技大学 | A kind of continuous casting billet cooling treatment method |
| RU2746189C2 (en) * | 2017-05-30 | 2021-04-08 | Общество с ограниченной ответственностью "Стандартиммаш" | Nozzle for performing heat and mass exchange processes |
| CN108295800B (en) * | 2018-04-10 | 2023-09-26 | 深圳市高德威技术有限公司 | Packing ring and packing suitable for kitchen fume purification |
-
1989
- 1989-12-14 CN CN89109152A patent/CN1019747B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1052435A (en) | 1991-06-26 |
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