CN1320956C - Screen waviness packings - Google Patents
Screen waviness packings Download PDFInfo
- Publication number
- CN1320956C CN1320956C CN 200410080055 CN200410080055A CN1320956C CN 1320956 C CN1320956 C CN 1320956C CN 200410080055 CN200410080055 CN 200410080055 CN 200410080055 A CN200410080055 A CN 200410080055A CN 1320956 C CN1320956 C CN 1320956C
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- China
- Prior art keywords
- silk
- screen
- silk screen
- waviness
- netting
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to silk screen waviness padding which is overlied into a silk screen sheet having a layer gap structure by two layers of or more than two layers of silk screens, and the silk screen sheet is pressed into a waviness sheet shape integrally. Multiple layers of silk screen sheets are folded and form the multi-layer screen waviness padding, and waviness crest lines on the silk screen sheets are fold lines. Because gapes of layers of the silk screen sheets are small, layer gaps and gaps of silk screen holes interact, liquid forms more liquid film on the surfaces the silk screens, the moistening degree of the silk screens is improved, and effective mass transfer area is increased. The liquid flows downwards along the fold lines and waviness lines of silk screen layers, and flow directions change at the points of the fold lines. The turbulent motion degree of liquid flow is increased, the superficial renewal rate of the liquid film is also improved, and thereby, the separation efficiency of mass transfer is improved remarkably.
Description
Technical field
The present invention relates to a kind of heat and mass transport element, mainly is the efficient screen waviness packings of tower.
Background technology
At chemical industry, oil, light industry, the mass transfer apparatus that uses in the industrial production such as metallurgy, mainly contain packed tower and plate column two big classes, the crucial mass transfer component of packed tower is a filler, screen waviness packings is widely used a kind of filler, generally cut and make required size by the individual layer silk screen, arrange in order, tighten into structured packing with the bundle winding, for improving the mass-transfer efficiency of screen waviness packings, usually being suppressed with wave molding on silk screen can support every silk screen mutually, with increasing specific surface area, but, directly influence the filming performance of liquid at filling surface because the silk screen surface moist is not enough, even therefore filler itself provides enough specific areas, because effectively wetted area is few, effective mass transfer liquid film of formation is few, and its mass-transfer efficiency also can be affected greatly.In addition, the wave molding on the general silk screen is a straight line, and liquid is directly dirty along straight line, and time of staying weak point is unfavorable for soaking into film forming on silk screen, so the mass-transfer efficiency of general ripple silk net structured packing is equivalent to 1-3 piece theoretical plate at every meter filler.
Summary of the invention
The present invention proposes a kind of efficient screen waviness packings, and this filler has improved the wettability of screen waviness packings, has increased effective mass transfer area, thereby has improved the mass transfer separative efficiency.
Main technical schemes: primary structure of the present invention is: laminate the silk netting that becomes to have crack structure by two-layer above silk screen, silk netting integral body is pressed into the ripple sheet, is stacked by the multi-layer silk screen sheet to constitute the multi-layer silk screen ripple packing.Because the lamellar spacing is very little, layer crack and space, silk screen hole can interact, and make liquid form more liquid film on the silk screen surface, have increased the moistening degree of silk screen.
The ripple crest line of arranging projection on the above-mentioned corrugated silk netting is the broken line with multiple tracks bending.
The crest height of ripple silk net sheet is between 1.5-6.3 (mm).
5 microns～10 millimeters of above-mentioned silk screen mesh wire diameters,
Above-mentioned silk screen twine section is the flat filament of geometries such as rectangle, rhombus.
Effect of the present invention: because the silk screen number of plies of single silk netting increases, form very little lamellar spacing, net interbed crack and mesh space are interacted, liquid " is stayed " on the silk screen layer, in whole filling batch, increased the moistening degree of silk screen greatly, made liquid form more liquid film on the silk screen surface.Liquid is along silk screen layer broken line wave molding toward current downflow, and flow direction changes at the broken line place, has increased the less turbulence of liquid flow, has also improved liquid film Surface Renewal rate.When gas passed through, vapour-liquid mass took place in gas and liquid on the liquid film surface, increased the gas-liquid mass transfer chance, has obviously improved the separative efficiency of filler, and separative efficiency reaches every meter filler and is equivalent to 5-25 piece theoretical plate.
Description of drawings
Fig. 1 is the double-deck gap structure ripple silk net of a present invention sheet perspective view.
Fig. 2 is a multilayer gap structure ripple silk net sheet perspective view of the present invention.
Fig. 3 is that multilayer gap structure silk netting of the present invention is made the perspective view of random packing.
Fig. 4 is that the double-deck gap structure silk netting of the present invention is made the perspective view of random packing.
Fig. 5 is a broken-line type ripple struction schematic diagram on the ripple silk net sheet of the present invention.
The specific embodiment
As shown in Figure 1, one embodiment of the present invention are to make the structured wire corrugated wire gauze packing, bilayer or multi-layer silk screen be stacked together be pressed into silk netting with crack structure, silk netting integral body is pressed into ripple sheet silk netting, ripple crest line on the silk netting can be pressed into the arrangement relief straight lines, better mode is to be pressed into the broken line with multiple tracks bending, liquid is along the broken line wave molding when dirty like this, be subjected to the repeated multiple times disturbance, improve the less turbulence of liquid and the Surface Renewal rate of liquid film, and then improve the separative efficiency of filler.The ripple silk net sheet is cut into the size that needs, presses the desired sequence multi-disc and arrange, roll into structured packing, be placed in the packed tower with the bundle winding; The ripple crest height is between 1.5-6.3 (mm) on the silk netting, the parallel or discharging that interlaces of crest between the adjacent silk netting.The material of filler can be a metal, also can be plastics.Owing in the silk netting a layer crack arranged, space and mesh space interact between net, liquid " is stayed " on the silk screen layer, liquid is along the past current downflow of broken line wave molding on the suitable silk netting of silk screen layer, increased the moistening degree of silk screen greatly, made liquid form more liquid film, in whole filling batch on the silk screen surface, when gas passed through, vapour-liquid mass took place in gas and liquid on the liquid film surface.Promptly increased the gas-liquid mass transfer chance, thereby the separative efficiency of filler is higher.Make material be able to abundant separation like this, promptly improved product purity, reduced overhead product content and consumption of raw materials in the raffinate, reduced reflux ratio, saved energy and improved production capacity.
As shown in Figure 4, another embodiment of the invention is to make random packing, and bilayer or multi-layer silk screen are stacked together is pressed into the silk netting with crack structure, and silk netting is rolled into ring-type, size on demand is cut into the random packing of O shape ring-type, is placed on the inner-tower filling material layer.
In order to improve the wettability of silk netting mesh hole, it is the flat filament of geometries such as rectangle, rhombus that the silk screen twine is taked section, or in advance coarse processing is carried out on the twine surface of silk screen.
Embodiment 1: absorption tower diameter 800mm, three-layer metal ripple silk net sheet of the present invention is housed arranges the structured packing that bundle is rolled in proper order, the ripple crest line is the broken line (see figure 5) on the silk netting, the staggered in the other direction discharging of crest broken line between the adjacent corrugated plate silk netting, the crest height 4.0mm of filler, the specific area 800m of filler
2/ m
3, filler effective depth 10m, filling surface are through with nitric acid, the coarse processing of sulfuric acid mixture, methyl acetate content 4-6% during with import absorbs through clear water, when reducing to discharging below 0.01%.Gained filler separative efficiency is at 15-20 piece theoretical plate/m.
Embodiment 2: methanol-water rectifying separates, and tower diameter 2000mm adopts the 15m filler, the structured packing that filler is formed for double-level-metal ripple silk net sheet of the present invention, crest height 6.3mm, packing specific area 500m
2/ m
3, filler carries out rough surface with embodiment 1 said method to be handled, and the wave molding of filler is a broken line shape as shown in Figure 5, and the separation index that filler provides is about 6-8 piece theoretical plate/m, and methyl alcohol separates index: charging methyl alcohol forms 35%, and all the other are water.Cat head obtains forming 99.9%, obtains forming 0.001% at the bottom of the tower, if present embodiment separates with common individual layer wire packing, the separation index that filler provides is about 3-4 piece theoretical plate/m, and methyl alcohol separates index: charging methyl alcohol forms 35%, and all the other are water.Cat head obtains forming 98.0%, obtains forming 0.05% at the bottom of the tower, contrasts visible the present invention and has remarkable result.
Embodiment 3: be pressed into silk netting by 4 layers of woven wire of the present invention, the silk netting that suppresses is curled, cuts and make metal θ ring with multilayer crack, diameter 5mm, length 5mm is positioned in the rectifying column, rectifying column diameter 100mm, packed height 1m.With this tower the alcohol-water system is carried out rectifying and separate, the index that obtains is: cat head ethanol 92% (percetage by weight), ethanol 0.005% (percetage by weight) at the bottom of the tower.The separating effect of 25 theoretical plates/rice filler can be provided.
Claims (7)
1, a kind of screen waviness packings, form by multi-layer silk screen, the silk screen compacting is the ripple sheet, it is characterized in that, laminate the silk netting that becomes to have crack structure by two-layer above silk screen, silk netting is pressed into whole ripple sheet, is stacked by the described whole ripple sheet silk netting of multilayer to constitute the multi-layer silk screen ripple packing, and the ripple crest line on the described silk netting is a broken line.
2, screen waviness packings according to claim 1 is characterized in that, the ripple crest line on the silk netting is the broken line with multiple tracks bending.
3, screen waviness packings according to claim 2 is characterized in that, the ripple crest height is between 1.5-6.3mm on the silk netting.
4, screen waviness packings according to claim 1 is characterized in that, the mesh wire diameter of silk screen is at 5 microns～10 millimeters.
5, screen waviness packings according to claim 1 is characterized in that, silk screen twine section is rectangle, rhombus or flat filament.
6, screen waviness packings according to claim 1 is characterized in that, the twine surface of silk screen is the rough surface after handling.
7, screen waviness packings according to claim 1 is characterized in that, the silk netting monolithic is curled into tubular, cuts and makes the heap screen waviness packings that looses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410080055 CN1320956C (en) | 2004-09-24 | 2004-09-24 | Screen waviness packings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410080055 CN1320956C (en) | 2004-09-24 | 2004-09-24 | Screen waviness packings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1751782A CN1751782A (en) | 2006-03-29 |
| CN1320956C true CN1320956C (en) | 2007-06-13 |
Family
ID=36678857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410080055 Expired - Fee Related CN1320956C (en) | 2004-09-24 | 2004-09-24 | Screen waviness packings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1320956C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107303481B (en) * | 2016-04-21 | 2021-04-27 | 王宝华 | Plastic structured packing |
| CN107131786A (en) * | 2017-06-23 | 2017-09-05 | 济南金孚瑞冷却技术有限公司 | A kind of suspension type crossflow cooling tower thin film filling |
-
2004
- 2004-09-24 CN CN 200410080055 patent/CN1320956C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1751782A (en) | 2006-03-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070613 |