CN101396619A - Novel extraction technique using drip film alternate flow process and combined regular packing - Google Patents
Novel extraction technique using drip film alternate flow process and combined regular packing Download PDFInfo
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- CN101396619A CN101396619A CNA2008101527685A CN200810152768A CN101396619A CN 101396619 A CN101396619 A CN 101396619A CN A2008101527685 A CNA2008101527685 A CN A2008101527685A CN 200810152768 A CN200810152768 A CN 200810152768A CN 101396619 A CN101396619 A CN 101396619A
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Abstract
The invention relates to a novel combined type structured packing which is used for extracting and adopts alternate flow process of a drop film; the structured packing adopts packing units with different structures to be placed in an alternate way, wherein, one is liquid drop packing which can cause the liquid drop to flow, and the other one is liquid film packing that can cause the liquid film to flow; the liquid drop packing is net rack packing that consists of a plurality of single-sheet net racks. The liquid film packing is screen hole net board corrugated structured packing which consists of a plurality of single screen hole net board corrugated sheets. The combined type packing can lead a disperse phase to take on the drop film alternate flow which is liquid drop-liquid film-liquid drop-liquid film, so as to remarkably improve the efficiency of coalescence-fragmentation of the liquid drop of the disperse phase, and strengthen the surface update rate of the liquid drop of the disperse phase and the turbulent motion level of the fluid interface; furthermore, after the disperse phase is broken into smaller liquid drops, larger contact area among the phases can be provided, thus improving the mass transfer efficiency.
Description
Technical field
The present invention relates to a kind of novel extraction combined regular packing that adopts drip film alternate flow process, belong to the improvement that the operating process of chemical industry extraction cells is used for the inner-tower filling material of mass transfer.
Background technology
Liquid-liquid extraction is a kind of traditional unit operations that system separates that is used for commonly used in oil, the chemical industry.The filler that is used for industrial extraction at present mainly is divided into two kinds, one is structured packing, as honeycomb type grid packing, metallurgic orifice corrugated packing etc., its advantage is that porosity is big, not only decentralized photo is played the effect of good cutting and crushing, and also has the polymerization guide functions, make the decentralized photo Surface Renewal very fast, shortcoming is that decentralized photo mobile in filler is mainly the membranaceous of wall, so mass transfer area is limited, thereby causes separative efficiency not high; It two is random packings, as Raschig ring, Pall rings etc., its advantage are that specific area is big, and the unit volume filler can provide bigger alternate contact mass transfer area, dispersed phase drop Surface Renewal speed is accelerated, improve the interphase mass transfer motive force, thereby strengthened mass transfer, in addition, random packing has reduced axial backmixing, also can improve mass-transfer efficiency.But the extraction random packing of present industrial application, major part is the entity filler, as Raschig ring, Pall ring etc., make that the Surface Renewal frequency of dispersed phase drop still is not very high, thereby mass-transfer efficiency is not very high.Therefore,, make its Surface Renewal frequency that can improve dispersed phase drop, can provide bigger alternate contact area again, thereby the mass-transfer efficiency that significantly improves liquid-liquid extraction is an important research direction how by changing filling-material structure.
Summary of the invention
The object of the present invention is to provide a kind of novel extraction combined regular packing that adopts drip film alternate flow process, this combined stuffing can make decentralized photo present drop-liquid film-drop-liquid film ... drip film alternate flow, significantly improve the coalescence-broken frequency of dispersed phase drop, strengthen the Surface Renewal speed of dispersed phase drop, strengthen the fluid boundary less turbulence, and decentralized photo can provide bigger alternate contact area after being broken for less drop, thereby improves mass-transfer efficiency.
The present invention is realized by following technical proposals:
A kind of method that adopts drip film alternate flow process is that extraction adopts the filler unit of different structure alternately to place, and is a kind of for producing the drop filler of droplet flow, a kind of for producing the liquid film filler that liquid film flows.
Normally used drop filler is the rack filler; The rack filler is made up of several monolithic racks, and the wavy channel direction of adjacent two racks is interlaced to be 15 °～90 °, and passage and vertical direction that ripple forms be 10 °～45 °, and height is 30mm～100mm.Fig. 1 is a monolithic grid structure schematic diagram, and Fig. 2 is the connected mode schematic diagram of two racks, adopts welding manner to connect.
Normally used liquid film filler is screen aperture reticular lamina corrugated structured packing; Screen aperture reticular lamina corrugated structured packing is made up of screen aperture reticular lamina corrugated of several monolithics, and the wavy channel direction of adjacent two corrugated platings is interlaced to be 15 °～90 °, and passage and vertical direction that ripple forms be 10 °～45 °, and height is 30mm～100mm.Fig. 3 is the screen aperture reticular lamina corrugated structural representation of monolithic, and Fig. 4 is screen aperture reticular lamina corrugated structured packing structural representation.
The initial placement order of two kinds of fillers can be selected arbitrarily.
The invention has the advantages that: adopt combined stuffing, in the zone of filler droplet flow, when decentralized photo comes in contact and collides with the sharper corner angle of certain speed and rack filler, the oil droplet that diameter is bigger can be cut into the less oil droplet of diameter effectively, alternate contact area increases, in the time of in drop enters the mobile zone of liquid film, the decentralized photo oil droplet collides and touches the surface of lipophile corrugated plate packing, the oil droplet coalescence is that very thin liquid film upwards flows, the decentralized photo Surface Renewal, when upwards the oil phase liquid film that flows arrives the corrugated plating upper end, be broken for oil droplet again and move upward, promptly present drop-liquid film-drop-liquid film ... drip film alternate flow, significantly improve the coalescence-broken frequency of dispersed phase drop, strengthen the Surface Renewal speed of dispersed phase drop, strengthen the fluid boundary less turbulence, thereby improve mass-transfer efficiency.
Description of drawings
Fig. 1: monolithic grid structure schematic diagram in the drop filler;
Fig. 2: the connected mode schematic diagram of two racks;
Fig. 3: the screen aperture reticular lamina corrugated structural representation of monolithic in the liquid film filler;
Fig. 4: screen aperture reticular lamina corrugated structured packing structural representation;
Fig. 5: embodiment of the invention schematic diagram.
The specific embodiment
For the present invention is described in further detail, the present invention is described in further detail below in conjunction with accompanying drawing 5:
Be the packed extraction tower of 150mm, packing section height 1200mm now, the present invention described in detail that as shown in Figure 5, tower body is followed successively by at the bottom of from cat head to tower with the tower diameter: settling section, in establish light phase export 6; Heavy liquid inlet 7; Extraction section, in establish some blocks of screen aperture reticular lamina corrugated structured packing fillers 4 and rack filler 5, the two is alternately placed, orlop is the rack filler; Settling section, in establish light phase distributor 8 and tap hole 9, distributor adopts to bump and drenches the hair style pressure-type, tap hole is positioned at the bottom of the tower.Light phase inlet ductwork links to each other with the oil phase storage tank by magnetic force driven centrifugal pump, and the heavy phase inlet ductwork directly links to each other with running water pipe.
Wherein the rack filler is made up of several monolithic racks, and the wavy channel direction of adjacent two racks is interlaced to be 15 °～90 °, and passage and vertical direction that ripple forms be 10 °～45 °, and height is 30mm～100mm.Fig. 1 is a monolithic grid structure schematic diagram, and Fig. 2 is the connected mode schematic diagram of two racks, adopts welding manner to connect.
The liquid film filler that uses is screen aperture reticular lamina corrugated structured packing; Screen aperture reticular lamina corrugated structured packing is made up of screen aperture reticular lamina corrugated of several monolithics, and the wavy channel direction of adjacent two corrugated platings is interlaced to be 15 °～90 °, and passage and vertical direction that ripple forms be 10 °～45 °, and height is 30mm～100mm.Fig. 3 is the screen aperture reticular lamina corrugated structural representation of monolithic, and Fig. 4 is screen aperture reticular lamina corrugated structured packing structural representation.
The initial placement order of two kinds of fillers can be selected arbitrarily.
We have carried out the extraction simulated experiment respectively to traditional extraction tower and novel extraction tower, the acetic acid in the water extraction kerosene (containing 30% tributyl phosphate) is adopted in experiment, process is as follows: at normal temperatures running water is squeezed in the tower through water distributor 7 from structured packing extraction tower cat head, and make the water liquid level a little less than light phase export, with oil pump oil phase is squeezed in the tower through oil phase distributor 8 from the oil phase storage tank then, the reverse flow in tower of water and oil phase, carry out the two-phase mass transfer in extraction section, wherein water is a continuous phase, and oil phase is a decentralized photo.Broken behind the oil phase drop process rack filler for drop moves upward, again at corrugated plate packing upper berth generate film, present drip film alternate and flow, the mass transfer interface is brought in constant renewal in, and makes acetic acid be extracted into water from oil phase, has realized liquid liquid efficient mass transfer.Oil phase liquid drops in that the top of tower settling section is assembled and gets back to oily storage tank by oil phase outlet 6, and water bottom valve 9 at the bottom of the tower is discharged.Acetic acid is squeezed into kerosene-acetic acid blender by peristaltic pump, and filler is housed in the blender, the kerosene of discharge and the acetic acid that replenishes is mixed, and play circulation by pipeline, and the two is mixed more uniformly.Quantitatively calculate extraction efficiency by the import and export concentration of analyzing the profit two-phase.
Experiment finds that under the identical operations condition, adopt single structured packing, apparent height of transfer unit is 0.45m, adopts combined stuffing, and apparent height of transfer unit is 0.38m.Change the filler unit type that orlop is placed, can obtain similar result.As can be seen, adopt the mass-transfer efficiency of the more traditional extraction tower of the extraction tower of combined stuffing to be enhanced.
Claims (5)
1. a method that adopts drip film alternate flow process is characterized in that extracting the filler unit that adopts different structure and alternately places, and is a kind of for producing the drop filler of droplet flow, a kind of for producing the liquid film filler that liquid film flows.
2. by the filler of the method for claim 1 preparation, it is characterized in that the drop filler is the rack filler.
3. filler as claimed in claim 2, it is characterized in that described rack filler is made up of several monolithic racks, the wavy channel direction of adjacent two racks is interlaced to be 15 °～90 °, and passage and vertical direction that ripple forms be 10 °～45 °, and height is 30mm～100mm.
4. by the filler of the method for claim 1 preparation, it is characterized in that the liquid film filler is screen aperture reticular lamina corrugated structured packing.
5. filler as claimed in claim 4, it is characterized in that described screen aperture reticular lamina corrugated structured packing is made up of screen aperture reticular lamina corrugated of several monolithics, the wavy channel direction of adjacent two corrugated platings is interlaced to be 15 °～90 °, and passage and vertical direction that ripple forms are 10 °～45 °, and height is 30mm～100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101527685A CN101396619B (en) | 2008-10-31 | 2008-10-31 | Method for alternating flow process of drip film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101527685A CN101396619B (en) | 2008-10-31 | 2008-10-31 | Method for alternating flow process of drip film |
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| Publication Number | Publication Date |
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| CN101396619A true CN101396619A (en) | 2009-04-01 |
| CN101396619B CN101396619B (en) | 2011-05-11 |
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| CN2008101527685A Active CN101396619B (en) | 2008-10-31 | 2008-10-31 | Method for alternating flow process of drip film |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657143A (en) * | 2013-12-18 | 2014-03-26 | 河北新启元能源技术开发股份有限公司 | Novel extraction device |
| CN103657142A (en) * | 2013-12-18 | 2014-03-26 | 河北新启元能源技术开发股份有限公司 | Extraction device accelerating two-phase separation |
| CN105435487A (en) * | 2014-09-02 | 2016-03-30 | 中国科学院上海高等研究院 | Vertical mixing, clarifying and extracting apparatus, tower extraction method and application of method |
| CN112370814A (en) * | 2020-10-29 | 2021-02-19 | 中国石油化工股份有限公司 | Filler extraction tower, application thereof and residual oil solvent deasphalting method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2090288U (en) * | 1991-05-16 | 1991-12-11 | 清华大学 | Column extractor with cellular-type grid regular packing |
| CN2897417Y (en) * | 2006-04-27 | 2007-05-09 | 天津大学 | Extracting columnar corrugated plated netted piled filler |
| CN101269314B (en) * | 2008-05-04 | 2010-09-15 | 天津大学 | Screen aperture reticular lamina corrugated filler tablet and regular packing |
-
2008
- 2008-10-31 CN CN2008101527685A patent/CN101396619B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657143A (en) * | 2013-12-18 | 2014-03-26 | 河北新启元能源技术开发股份有限公司 | Novel extraction device |
| CN103657142A (en) * | 2013-12-18 | 2014-03-26 | 河北新启元能源技术开发股份有限公司 | Extraction device accelerating two-phase separation |
| CN105435487A (en) * | 2014-09-02 | 2016-03-30 | 中国科学院上海高等研究院 | Vertical mixing, clarifying and extracting apparatus, tower extraction method and application of method |
| CN112370814A (en) * | 2020-10-29 | 2021-02-19 | 中国石油化工股份有限公司 | Filler extraction tower, application thereof and residual oil solvent deasphalting method |
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| Publication number | Publication date |
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| CN101396619B (en) | 2011-05-11 |
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