CN1201400A - Agitated-packed extraction column - Google Patents
Agitated-packed extraction column Download PDFInfo
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- CN1201400A CN1201400A CN96198114A CN96198114A CN1201400A CN 1201400 A CN1201400 A CN 1201400A CN 96198114 A CN96198114 A CN 96198114A CN 96198114 A CN96198114 A CN 96198114A CN 1201400 A CN1201400 A CN 1201400A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
-
- 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
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0426—Counter-current multistage extraction towers in a vertical or sloping position
- B01D11/043—Counter-current multistage extraction towers in a vertical or sloping position with stationary contacting elements, sieve plates or loose contacting elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0426—Counter-current multistage extraction towers in a vertical or sloping position
- B01D11/0434—Counter-current multistage extraction towers in a vertical or sloping position comprising rotating mechanisms, e.g. mixers, rotational oscillating motion, mixing pumps
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/26—Treatment of water, waste water, or sewage by extraction
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/3221—Corrugated sheets
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32213—Plurality of essentially parallel sheets
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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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32224—Sheets characterised by the orientation of the sheet
- B01J2219/32227—Vertical orientation
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32255—Other details of the sheets
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/324—Composition or microstructure of the elements
- B01J2219/32408—Metal
-
- 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
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/324—Composition or microstructure of the elements
- B01J2219/32483—Plastics
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Extraction Or Liquid Replacement (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Seeds, Soups, And Other Foods (AREA)
Abstract
An agitated-packed column (12) utilizing structured packing (20) of the plate variety secured in the calming sections (14) thereof. The structured packing (20) is divided into bundles of corrugations angularly oriented one to the other. Each calming section (14) has multiple layers (67, 68, 69) of structured packing (20) which are rotated relative to each other to further enhance the distribution of liquid therethrough and to effect and improve sealing along the edges thereof.
Description
Background of invention
The present invention relates to the chemical technology tower, more particularly, relate to the stirring column extractor that structuring filling is housed.
Prior art
In liquid-liquid contact technique, be starved of and use the method and apparatus that effectively improves the mass transfer that in process tower, takes place.This finishes by adverse current liquid extraction system usually.The liquid of these systems flows through one or more chambers continuously and upstream, and this chamber can have wherein the device of being installed in of particular design.This class device can comprise: be used to influence the agitator of physical property of liquid (for example drop size) and work the tower packing that hinders the direct mobilization of liquid.It is better than light rinsing liquid with than the contact between the resedimentation liquid that filler also provides, and the better more way of contact of efficient is provided.
Usually like this structure liquid-liquid process tower so as the heavy-fluid body to be flowed downward from the top of tower and light liquid from the bottom of tower to rising.Have been found that: provide the apparatus and method that can play effective mass transfer or liquid-liquid contact action to meet the requirements in the liquid-liquid zone of action of prior art, thus with the low contact that can finish liquid by the zone of given minimum size of the minimum pressure drop.In the liquid-liquid extraction operation, it is important standard that high-level efficiency and low pressure reduce.The enough surface-area that are used for the contact of liquid-liquid are present in rising to carry this basic function secretly than the heavy-fluid body of light liquid are essential for reducing or eliminating.The most usually, in post that stirs extraction system or vibration absorber, need structurized filler to arrange and cause the heavy component fraction, and allow upwards to carry out rinsing by filler than the light liquid least resistance to dirty so that all have enough surface-area at level and vertical two faces.With such device, respectively at the bottom of this tower and the heavy component and the light component of recovered overhead charging.
Being generally included by hydrodynamic-liquid tower (do not have machinery stir) a lot provides miscible and accumulation horizon complementary design.In US5185106, narrate, illustrate and discussed such design.In so passive post, each layer utilize fluidic speed and kinetic energy eliminate ascending liquid mutually in the heavy-fluid body dual-use function carrying secretly and contact with the heavy-fluid body by light liquid, thereby finish abundant separation or liquid extraction become required component.On the contrary, in the prior art that many gently levels by packing layer and vertical surface are provided, used the beading that tilts or plate like this in case guarantee than light liquid flow and it is distributed in this sheet and prevents that this is than bad distribution or the channel of light liquid by some district of this floor rather than other district.In the method, only utilizing post is virtuous with being applied to the energy that wherein works.
The structuring filling of this tower is also had suggestion, and the node configuration of the inclination ripple contact plate of prior art has added and has been useful on the hole that liquid passes through.Thereby form turbulent flow by such hole and guaranteed that light phase and the close of heavy phase contact.What need to guarantee is: the dual-use function that gently the rising mutually of rising contacts and liquid is not carried secretly near vertical position (rise on this position be close or leave access opening).Use this method, reduce the bad distribution of rising or decline phase.In addition, prior art the most important thing is to provide aforesaid method and the device that is used for liquid-liquid contact in the configuration of economy manufacturing.Such consideration needs for effectively controlling cost.
On the contrary, the inclination waved plate provides only a kind of method and apparatus that is used for the mutual effect of adverse current liquid-liquid phase.Arrange with such filler, or be close to the liquid introducing and extract out in the column top from the bottom with or be close to that the column bottom is introduced and contact effectively from the separating liquid of top extraction.The key feature of method and apparatus is to have guaranteed that first and second liquid realize that contacting with each other of required degree causes the speed quality or the transmission ofenergy of being scheduled to design like this.According to it whether power of external drive is arranged, this internal structure can be active or passive.Yet, for using the active system to have reason.
The understanding of a prior art is: passive packed column is compared with the active post has poor result.One of problem is to cause the considerably less channel of contact between liquid.Another problem is the size that is dispersed in the 1st liquid phase drop of the 2nd continuous liq in mutually.By the agitator system, the size of the 1st drop can become superfine and keep being dispersed in the 2nd liquid for a long time.The example of an active column extractor is the Scheibel type extraction plant that is shown among the US2493265.An aspect of inventing described in this reference comprises the post or the chamber of the perpendicular that the mixing zone is housed, and one or more agitators wherein has been installed so that the close contact between the promotion liquid causes balance contact between them.This above mixing section or below be the vibration absorber, bat wool wherein is installed, self-cradling type preferably, for example a volume piped litzendraht stratum reticulare.As described in the patent of Scheibel, the filler in the vibration absorber stops the circulatory motion of liquid and allows them to separate.Like this, in lower floor's filler, heavier liquid settles out and flows to upstream downwards and passes through lighter rinsing liquid and flow.Similarly, in the filler of upper strata, flow to upstream and pass through heavier decline liquid and flow than the rinsing liquid of light liquid stream.Agitator be installed on the central shaft that runs through this post and any suitable device of this usefulness for example motor rotate.Other counter-current extraction post design is narrated and is illustrated in United States Patent (USP) 2070382,3032403 and 4855113.Nearest Scheibel patent design description and being illustrated among the US2850362.In this system, describe again and the vertical self-supporting wire mesh sieve that runs through whole vibration absorber has been described.
Notion with stirring column extractor of structuring filling is not new, for example sees that L.Steiner and S.Hartland are at the post described in the CEP in the December, 1980 that is incorporated herein by reference (60 pages)., in development with test these design aspects and exposed a lot of problems.A problem is near filler " liquid bypass ".Owing to this or other reason, the industrial application of system is restricted like this.
Liquid-liquid contact system contacts system with solution-air be visibly different, although this two individual system can the utilization structure filler.In solution-air contact system, wetting filler of liquid phase and mass transfer are by being provided by the liquid phase that flows through continuous gas phase there on filling surface.In stirring column extractor, the 1st liquid phase is dispersed in the 2nd external phase with the drop form.As mentioned above, this drop all keeps in the whole post disperseing by stirring can become superfine and it is desirable to very much make this disperse phase liquid to drop in.From this operating parameters, the filler that does not make above-mentioned liquid-liquid system by disperse phase wetting be favourable.What people knew is: for keeping organic phase to disperse, the metallic surface is more effective than ptfe surface, and the latter disperses more effective to keeping containing water.The function of filler mainly provides restriction or " roadblock " so that increase the dispersed phase drop number of per unit volume adverse current external phase in stirring infill system.By increasing the disperse phase hold-up, can realize improved mass transfer., if hold-up is too big, this flows can be reduced to such point, thereby forms external phase at one of this drop and another collision.This condition is referred to as liquid flooding.Liquid flooding becomes final condition then, under this point, and the decrease in efficiency of tower performance and can reach flow velocity and no longer increase.Because this restriction considers that in stirring infill system the hold-up (this is effectively set by structuring filling, hydraulic diameter design) of drop size (this can control effectively by agitator design) and disperse phase is very important.
Therefore, advantageously: by effective displacement structure filler provides the method and apparatus that is better than prior art so that improve the improvement stirring column extractor of liquid-liquid extraction efficient wherein with effective design with in its vibration absorber.System of the present invention provides such method and apparatus, and this system provides the structurizing arrangement of placing waved plate with such configuration, causes in the horizontal vibration absorber of axial cross-flow of liquid-liquid extraction tower effective liquid-liquid extraction parts are provided effectively.The present invention also provides the improvement of hydraulic diameter validity aspect by utilizing the big curling height that is used for structuring filling and a large amount of counterrotating each other layered fillers unit.
Summary of the invention
The present invention relates to stir column extractor, more particularly, one aspect of the present invention relates to countercurrent liquid-liquid extraction system, and it comprises the post of perpendicular, and it has the central shaft that runs through and comprising horizontal damping of a series of property cross-flow and mixing zone.Whipping appts is placed on and is used in each mixing zone non-perpendicular axle masterpiece is used to flow in wherein liquid.Be installed in structuring filling in this vibration absorber and between the mixing zone, and be installed in ripple contact plate that structuring filling in the vibration absorber comprises that one deck at least places with face-to-face relation usually so that promote flowing of liquid therebetween.
On the other hand, the invention described above comprises the opposite waved plate that is tilted in relation to each other and has with respect to the post Z-axis angle is housed.This waved plate that is placed on the vibration absorber has the ripple with respect to the about 45 degree orientations of axis of a cylinder.The ripple of this plate can have about 1/2 inch height and have slick surface smoothness usually.In one embodiment, this plate is laminar and is formed by metal.In another embodiment, this plate or form or apply with it by a kind of engineering plastics (comprising tetrafluoroethylene and polypropylene).
Aspect another, the invention described above comprises at least two axial packing layers that laterally are placed in each vibration absorber of the present invention.At least one the 2nd layer of filler preferably is installed on this filler, and it rotates about 90 degree with respect to the 1st layer of filler, so that strengthen the edge sealing between said filler and the said post.In another embodiment, contiguous the 2nd layer of filler place provides the 3rd layer of filler, and if more than 3 layers, rotate about 90 degree with respect to it so, by that analogy.
In another aspect of the present invention, the present invention relates in the post of perpendicular, carry out this class countercurrent liquid-liquid method of extraction with the horizontal damping of a series of axial cross-flows and mixing zone.This method comprises following step: provide at least one to be used for the ripple modification that non-perpendicular axle masterpiece is used for liquid and structuring filling is provided to this mixing zone.Then will this structurized filler be installed in the vibration absorber and Face to face this be had at least that the structuring filling of one deck ripple contact plate is placed in the said vibration absorber usually.This method can also comprise following these steps: place and to have to tilt relative to each other and with respect to the corrugated metal sheet of this post Z-axis ripple at angle.
The accompanying drawing summary
For a more complete understanding of the present invention with in order to understand its purpose and advantage, can be with reference to following description and accompanying drawing, wherein:
Fig. 1 is the diagram facade sketch that the complete assembly that stirs extraction system in accordance with the principles of the present invention is described;
Fig. 2 is the side facade diagrammatic sectional view of graphic extension according to the stirring packed column of principle of the invention construction;
Fig. 3 A is the graphic representation that explanation distributes with the acetone of Fig. 1 system between toluene and water;
Fig. 3 B is every meter theoretical plate number of Fig. 1 system to the graphic representation of the agitator paddle RPM that is used for the 1st structuring filling size;
Fig. 4 is every meter theoretical plate number of Fig. 1 system to the graphic representation of the RPM that is used for the 2nd structuring filling size;
Fig. 5 is every meter theoretical maximum stage number of explanation to the Stichlmair type graphic representation of two kinds of different structure filler size total fluxs that are used for Fig. 3 and Fig. 4; With
Fig. 6 is the graph of a relation of the volumetric efficiency of Fig. 3 and Fig. 4 structuring filling to the total flux from external phase to the disperse phase mass transfer;
Fig. 7 is the amplifier section exploded perspective illustration of Fig. 2 structuring filling parts in accordance with the principles of the present invention.
Detailed Description Of The Invention
At first with reference to figure 1, it has illustrated a sketch that stirs packed column system implementation scheme that constitutes according to the principle of the invention.This system 10 comprises: the post 12 that is made of wherein a lot of vibration absorbers 14 and mixing zone 16.Lump together, these post 12 parts provide countercurrent liquid-liquid extraction system, and it has the transmission shaft 18 that is positioned at along central shaft 26.This transmission shaft 18 is made of the paddle that is placed in each mixing zone, and it is used for non-perpendicular responsive to axial force in flowing fluid therein.Each vibration absorber 14 also comprises the structuring filling 20 that is installed in wherein, has structuring filling between mixing zone 16, and this structuring filling comprises that the ripple contact plate that place at least one aspect opposite is used for promoting flowing of liquid therebetween, as described in detail below.
Should be noted that: Fig. 1 is the synoptic diagram of the simple system of expression, is used for illustrating principle of the present invention.This synoptic diagram itself is the pilot plant application drawing, but can its equivalence be applied to and change into industrial system by those skilled in the art.
Also with reference to figure 1, variable speed drive motor 22 is fixed on 24 places, top of post 12, is used for providing power to mixing zone 16.Transmission shaft 18 rotations that CD-ROM drive motor 22 extends the axle 26 of post 12 downwards.Paddle 28 is installed in the mixing zone 16 with convenient liquid countercurrent and forms the wherein stirring of liquid by this transmission shaft 18 by wherein the time.Design its stirring so that reduce the size of disperseing to advance the liquid phase drop in another external phase liquid.Like this vertical vane 29 is assembled on the paddle 28 so that produce the stirring of non-perpendicular axle property power.The stirring of blade 29 grades has illustrated and produced superfine dispersant liquid drop shape in such parts.
The 1st or in the reservoir of adjacent posts 12 or bucket 32, provide than heavy-fluid body 30, and be pumped into the top 24 of said post with pump 34.Illustrated flow measurement system is used for the monitoring liquid flow velocity.Liquid 30 is delivered into the top 24 of post 12 by pump 34 by transfer lime 38, will enter the bottom 42 of post 12 than light liquid 40 pumpings simultaneously.Than light liquid 40, be the organic solvent form herein, in bucket or reservoir 44, provide, and enter the bottom 42 of post 12 by pump 46 pumpings by pipeline 48.Also show traffic alignment and measure system 49.When than heavy-fluid body 30 during downwards by agitated-packed extraction column 12, it is carried from bottom 42 by drawing off pipeline 50 and enters herein the reservoir of expressing as bucket 52.Can use pump 54 that liquid 30 is compressed into bucket 52, this liquid 30 is referred to as moisture underflow or raffinate 56 usually.Equally, light organic solvent 40 is upwards sent by drawing off pipeline 60 by post 12 and from top 24 and is entered after by venting port 62 herein the reservoirs as bucket 64 expressions, locates it as organic overflow or extract 66 storages at this.As commonly used in the chemical technology tower technology, mesh pad coalescer (not shown) is used for this pilot plant test.
With reference now to Fig. 2,, it has illustrated that Fig. 1 has the post 12 that is placed with variable speed drive motor 22 on it.In this specific side elevational cross section, represented vibration absorber 14 in more detail.Structuring filling 20 is contained in each vibration absorber 14 in 3 special layers.Structuring filling 20 in each vibration absorber 14 is by forming in the face of the 1st bottom 67 of the ripple packing of the 1st direction and the ripple packing that is oriented to the 2nd direction that is placed on it the 2nd layer 68.Be described in more detail below the orientation of layer 67 and 68.The 3rd packing layer 69 is placed on the 2nd layer 68, and the 3rd layer 69 also with respect to the 2nd layer of 68 rotation.In this concrete figure, the bottom 42 of tower 12 is represented as by being enough to provide organic solution dispenser 70 long axles to constitute.This divider 70 will upwards distribute by post 12 than light liquid 40, and the upper zone that while aqueous feed divider 72 is placed on post 12 is used for distributing than heavy-fluid body 30 downwards.Specific system has been designed in the analysis of the present invention, has had a part of testing than minor diameter (about 3 inches) post pilot plant relatively as use.Narrate other test parameter and result below.
Also with reference to figure 2, one aspect of the present invention is to use the corrugated metal filler in vibration absorber 14.In preferred embodiments, the layer 67,68 and 69 of vibration absorber 14 revolves each other and turn 90 degrees and formed by slick impermeable corrugated metal structuring filling.Thereby this filler configuration is used for the gauze packing that the present invention replaces the Scheibel net type extraction plant of US2493265.Discovery is during this component test, and this replacement makes the technological ability that obtains with volumetric efficiency increase by 6 times, if this is high, also equally matched with it unlike the prior art design.
Use test of the present invention
Carry out the test of pilot plant column extractor so that explanation is shown in the performance of the agitated-packed extraction column of type among Fig. 2 with standard acetone-water-toluene system.The column extractor of two evaluations is to replace this webbed region imitated according to the netted post of original Scheibel shown in US2493265 (hereinafter being referred to as " the netted post of Scheibel ") with above-mentioned higher ripple ability structure filler.Use described virtual height to be two fillers of 30 inches in the column extractor of 3 inch diameters herein, it contains 4 actual plates.Provide stirring with the standard 4-paddle radial steam turbine that generally is used for the netted post of 3 inch diameter Scheibel.Carry out from containing water continuously to disperseing organic phase (c-d) and from disperseing organic phase, but the detailed analysis of (c-d) mass transfer data only is provided to two acetone mass transfer tests that contain water (d-c) continuously.
This test with smooth surface, the puncherless coiled structure filler be of a size of 3/8 inch and 1/2 inch that curls carries out.Less curling size is because the column diameter littler than industrial columns causes.For bigger industrial columns, this curling gravel size decision is increased to 3 inches.In with 3/8 inch curling test, the parallel feeding of consideration and the flow velocity of solvent are 10-50m
3/ (m
2Hr), the agitator speed that uses is 300-1750rpm.The theoretical plate number of every meter maximum is at 10m
3/ (m
2Hr) the 3.83 towers number/rice-20m the time
3/ (m
2The scope of the maximum 5.91 towers number/rice in the time of hr) is 49.89m in mixed traffic
3/ (m
2Hr) under higher processing speed, be reduced to 2.11 towers number/rice.Maximum volume efficient (under best rpm) is 10m from mixed traffic
3/ (m
2Hr) 38.3HR under
-1Be increased to 40m
3/ (m
2Hr) the maximum value 186.8HR under
-1, it is reduced to 49.89m then
3/ (m
2Hr) 106HR under
-1
In the test with 1/2 inch curling filler, the flow velocity of the mixture throughput of consideration is 10.58-41.01m
3/ (m
2Hr), the agitator speed that uses is 450-1700rpm.The theoretical plate number of every meter maximum is at 10.58m
3/ (m
2Hr) the 5.2 towers number/rice-20.48m the time
3/ (m
2The scope of the 7.14 towers number/rice in the time of hr), at mixture by being changed to 49.89m
3/ (m
2Hr) under higher processing speed is reduced to 2.74 tower numbers/hour.Maximum volume efficient is from 10.58m
3/ (m
2Hr) 55.5HR the time
-1Be increased to 30.73m
3/ (m
2Hr) 154.6HR the time
-1, it is reduced to 41.01m then
3/ (m
2Hr) 112.4HR the time
-1
By replace the net in the netted post of primary Scheibel with 3/8 inch filler with coiled structureization, combination treatment speed is from 10m
3/ (m
2Hr) be increased to 40m
3/ (m
2Hr), volumetric efficiency surpasses 150HR
-1These data show that ability has increased by 6 times and have fabulous volumetric efficiency.
Carry out above-mentioned test and stir packed column and stir packed column performance to standard acetone-water-toluene system under the room temperature treatment condition under the room temperature treatment condition 3 inch diameters with 1/2 inch structuring filling being estimated in the performance of standard acetone-water-toluene system and (2) so that (1) estimates 3 inch diameters with 3/8 inch structuring filling.
With reference now to Fig. 3 A,, can see the equilibrium distribution of acetone between SILVER REAGENT toluene and water (water vapor condensation thing) phase at room temperature.Obtain these data by carrying out mobility test with beaker at the bottom of 1 liter of garden.The raffinate that obtains by gas Chromatographic Determination and the composition of extraction phase.
As mentioned above, Fig. 1 has illustrated the sketch of extraction pilot plant, and the data that provide herein are provided from this device.This pilot plant comprises teeter column 3 inch diameters, that be installed in variable-ratio paddle 28 in the mixing zone 16, charging 30 and the solvent 40 that provides is provided and is used for organic extraction overflow 66 and the collection system of raffinate underflow 56.In all cases, organic toluene is dispersed in mutually and contains aqueous phase continuously, so liquid-liquid interface is positioned at the top of this column extractor.
In Fig. 3 B, 4,5 and 6, can see the concrete geometricdrawing of the teeter column 12 of test.The filler that is used for 3/8 inch curling post is from trade name Gempak
RThe structuring filling that (Glitsch, the registered trademark of Inc.) sells is made.It is thick that this Gempak element is manufactured into the 4-3/4 inch, 3 inches external diameters and be drilled with 1/4 inch axial opening by its center and be used for accepting transmission shaft 18 (see figure 7)s by wherein.Be used for 1/2 inch curling Gempak
RThe filler of post is to pass through 3 Gempak from plain film hardware (no bar, eye or hole)
R1.5 inches thick * 3 inch diameter dishes weld together that thereby the element that forms 4.5 inches long (height) makes.Each dish turn 90 degrees with adjacent spiraling before welding.Have again, by each the completion element central shaft be used for by agitator transmission shaft 18 to the hole that ground is drilled with one 1/4 inch diameter.
The pilot plant test-results is shown among Fig. 3 B, 4,5 and 6.Determine theoretical plate number from the pilot wire mapping of drawing at Fig. 3 A.Because the mutual solubility of water and toluene is very little in this research range, so operating weight can suppose it is straight line than the pilot wire on Fig. 3 A of unit.In all tests, organic solvent is 1.5 with the volume theory ratio of aqueous feed.Therefore, almost be parallel for the pilot wire of this test and the extraction factor unit of approaching 1 that obtains with line of balance.In these cases, HETS (equivalent height of theoretical tray) and HTU (height of transmission unit) equate basically.
Volumetric efficiency is that unit is m
3/ (m
2Hr) the total flux and the product of every meter theoretical plate number.Therefore, the unit of volumetric efficiency is HR
-1(hour
-1) and be inversely proportional to column volume that needs carry out given extracting operation.
Curl for 3/8 inch and 1/2 inch and to stir packed column, every meter theoretical plate number is shown in respectively in Fig. 3 B and 4 curve of rpm.At 10m
3/ (m
2Hr) under the combination treatment speed, best rpm is the 50-70% of general liquid rpm.Yet under high processing speed, best rpm (every meter theoretical plate number the highest) is 5% of flooding point rpm.
Maximum every meter theoretical plate number is shown among Fig. 5 the Stichlmair type curve of combination treatment speed (total flux).Fill (AP) post for 3/8 inch and 1/2 inch two stirring of curling, all at about 20m
3/ (m
2Hr) locate to occur every meter maximum theoretical plate number.
Volumetric efficiency is shown among Fig. 6 total flux.For 3/8 inch and 1/2 inch two the stirring packed column that curls, all at about 40m
3/ (m
2Hr) locate to occur maximum volume efficient.
With reference now to Fig. 7,, it has shown the amplifier unit decomposition diagram that is placed on the preferred embodiment of the invention in the 14 inherent layers 67,68 and 69 of tower 12 vibration absorbers, and it is corresponding to the description of Fig. 2.Each layer 67,68 and 69 is total is expressed as layer 100.For example, in the parts of a plurality of packing layers 100, provide structuring filling 20.The filler 20 of each layer 100 comprises a plurality of beadings 102, and its ripple is arranged on respect to an angle of tower axle 18 and is orientated Face to face at an angle to each other.Transferring the possession of in Glitsch, illustrating also among the US4842778 of Inc. that more or less similarly structuring filling is arranged.In order to make by the wherein directed lateral dispersion and the fully distribution of liquid, a plurality of layers rotate about 90 degree orientations each other, as representing with Section line 111.Not only provide uniform liquid distribution as the rotation relationship of each interlayer of representing with line 111 but also strengthened the stopping property of its parts with respect to post 12 garden walls.The rotation relationship of this interlayer not only provides uniform liquid distribution and has improved the sealing of these parts with respect to post 12 garden walls, but also has improved the hold-up of disperse phase in described post vibration absorber.For example, individual layer beading 102 is along its end 110 of clean cut size more, and is best to inner wall 104 sealings of circle.Owing to improved the assembling between filler 20 and the inner wall 104, greatly reduce " liquid bypass " around the packing layer 100.Be placed on the layer 67 by the rotating layer 68 with beading 102, the minimum sealing surface area of one deck is compensated by following one deck.As mentioned above, thus this enhanced seal is because the size that can process sheet 102 ends 110 more closely cooperates with wall 104 than the side 113 of beading 102.Because this better sealing, institute is so that in the filler 20 bypass minimum of disperse phase on every side.
Also with reference to figure 7, each of a plurality of packing layers 100 manufactured have the centre hole 199 that forms therein.Layer 100 hole 199 is applicable to and makes the parts of paddle 28 by the transmission shaft 18 so that allow of acceptance by wherein 16 neutralizations make its rotation in adjacent mixing zone.As mentioned above, in this way, can stir wherein flowing fluid.In one embodiment of the invention, for example polypropylene, Teflon (trade name of Dupont) or Kymar (trade name of Pennwalt Corp.) apply the inwall 104 of paddle 28, blade 29, axle 18, packing layer 100 and tower 12 with plastics.In fact, packing layer and other parts, for example paddle blade 29 can be made by such plastics.Such plastic coating can pass through immersion coating, waits to apply and be the most useful when using the present invention to advance liquid, aqueous dispersion in the continuous organic liquid, because liquid, aqueously condense on metal.
Illustrated thus and the invention provides the improved stirring column extractor of strengthening the property that has, but particularly, Fig. 1,2 and 7 (reference together now) has illustrated countercurrent liquid-liquid extraction system 10, it comprises the post 12 of perpendicular, it has the central shaft 18 by wherein, and comprising a series of axially staggered horizontal vibration absorber 14 and mixing zones 16.Whipping appts in the paddle 28 is placed on and is used in each mixing zone 16 non-perpendicular responsive to axial force on flowing fluid wherein.Be installed in one deck structuring filling 20 at least in each vibration absorber 14 and this mixing zone 16 and being installed between the said structuring filling of described vibration absorber, described vibration absorber comprises that one deck generally is to place so that promote the ripple contact plate or the sheet 102 of liquid-flow therebetween face-to-face at least.
As directed, the beading 102 that is placed in the vibration absorber can have the ripple that is orientated with respect to 12 18 about 45 degree of post.The ripple of sheet 102 can form about 1/4 inch-3 inches height, and this depends on the size of post 12, and as mentioned above, generally can have slick surface smoothness, and perhaps this sheet can comprise the hole.In one embodiment of the invention, this sheet 102 is laminar and is formed by metal.As mentioned above, this sheet 102 also can be formed or be applied with it by plastics.In another aspect of the present invention, the preferred embodiment of foregoing invention comprises at least two axial layers 100 that laterally are placed on the filler 20 in each vibration absorber 14.Estimating in specific routine is used will be with five layer or more multi-layered.In specific embodiments, filler revolves with respect to the first layer filler and turn 90 degrees so that strengthen edge stopping property between described filler and post 12 inwalls 104.
Thus, from above, believe that operation of the present invention and structure are conspicuous.Although shown in or described method and apparatus be preferred, it has various variations and is not breaking away under the spirit and scope that limit as following claims and can improve.
Claims (52)
1. one kind is applicable to the wherein countercurrent liquid of liquid-flow-liquid extraction system, and described system comprises:
The post of perpendicular, damping and mixing zone that it has the central shaft by wherein and comprises a series of axially staggered traverses;
Whipping appts is placed on and is used in each described mixing zone non-perpendicular responsive to axial force in fluxion wherein;
Be installed in the structuring filling between said vibration absorber and the said mixing zone; With
Be installed in the described structuring filling in the described vibration absorber, it comprises that one deck generally is to place face-to-face to be used to promote the ripple contact plate of liquid-flow therebetween at least.
2. the system described in the claim 1 is wherein placed described waved plate at angle with the relative ripple that is tilted in relation to each other and with the Z-axis with respect to described post.
3. the system described in the claim 2, wherein said waved plate is placed in the described vibration absorber, and described ripple is with the angular orientation with respect to about 45 degree of axle of described post.
4. the system described in the claim 1, the described ripple of wherein said plate is to be formed by about 1/4 inch-3 inches height.
5. the system described in the claim 1, wherein the smooth finish with general smooth surface forms described waved plate.
6. the system described in the claim 1, wherein said is formed by metal.
7. the system described in the claim 6, wherein said tinsel by basically slick, the successive surface forms basically.
8. the system described in the claim 1, wherein said by comprising that tetrafluoroethylene and polyacrylic class engineering plastics form.
9. the system described in the claim 1 wherein laterally is placed on two packing layers of axially piling up at least one described vibration absorber at least.
10. the system described in the claim 9 wherein is placed on two packing layers of axially piling up in the described vibration absorber of each described post at least.
11. the system described in claim 9 and 10, thereby wherein the 2nd layer of filler revolves with respect to the 1st layer of filler of described two axial accumulation horizons and turn 90 degrees so that strengthen the bypass that edge stopping property between described packing layer and the described post limits its surrounding liquid.
12. the system described in the claim 11, wherein the 3rd layer of filler provided be fixed to adjacent described the 2nd layer of filler on and relative its revolve and turn 90 degrees so that further limit the bypass of its surrounding liquid.
13. the system described in the claim 1, wherein said structuring filling comprise the waved plate that formed by metal and place into about miter angle with the relative ripple that is tilted in relation to each other and with the axle with respect to described post.
14. the system described in the claim 1, wherein said whipping appts comprise the paddle that is installed on the described common vertical rotatable transmission shaft, this transmission shaft is placed in the described post by described structuring filling.
15. the system described in the claim 14, wherein said paddle comprise that four symmetries are placed on the axial radial paddle of described transmission.
16. the system described in the claim 1, wherein said post are applicable to the counter-current flow of one first heavy-fluid body and one second light liquid, and a dispersion is advanced in another liquid.
17. the system described in the claim 1 wherein saidly is exposed to the structuring filling of described liquid and those districts and the described post of described whipping appts comprises frosting.
18. countercurrent liquid-liquid method of extraction comprises following step:
The post of perpendicular is provided, and it has the wherein damping and the mixing zone of liquid-flow of being applicable to of a series of axially staggered traverses;
Described mixing zone is provided, with at least one agitator non-perpendicular responsive to axial force in by flowing fluid wherein;
The structuring filling of waved plate class is provided, and described filler comprises that one deck at least is generally the ripple contact plate of face-to-face placement;
Described structuring filling is installed in the described vibration absorber; With
Make first and second liquid flow cross described post.
19. the method described in the claim 18, it also comprises following step: with the relative ripple that is tilted in relation to each other and with respect to the Z-axis of described post at angle, place described waved plate.
20. the method described in the claim 19, it also comprises following step: described waved plate is placed in the described vibration absorber angular orientation of described ripple to spend with respect to the axle about 45 of described post.
21. the method described in the claim 18, it also comprises following step: the described ripple that forms about 1/4 inch-3 inches high described plate.
22. the method described in the claim 18, it also comprises following step: form the described waved plate with general glossy surface finish.
23. the method described in the claim 18, it also comprises following step: form described plate by metal.
24. the method described in the claim 18, it also comprises following step: by comprising that tetrafluoroethylene and polyacrylic class engineering plastics form described plate.
25. the method described in the claim 18, it also comprises following step: at least two packing layers of axially piling up are installed at least one described vibration absorber.
26. the method described in the claim 25, it also comprises following step: at least two packing layers of axially piling up are installed in each described vibration absorber.
27. the method described in claim 25 and 26, it also comprises following step: thus the 2nd layer of filler revolves with respect to the 1st layer of filler of described two axial accumulation horizons and turn 90 degrees so that strengthen the bypass that edge sealing between described packing layer and the described post limits its surrounding liquid.
28. the method described in the claim 27, it also comprises following step: the 3rd layer of filler is provided in described the 2nd layer of consecutive position and revolves the angle that turn 90 degrees with relative its described the 3rd layer of filler is fixed on described the 2nd layer of filler, so that further limit the bypass of its surrounding liquid.
29. the method described in the claim 18, it also comprises following step: the described agitator with paddle is provided.
30. the method described in the claim 29, it also comprises following step: form the hole in described layer filler, provide common vertically rotatable, be placed on the transmission shaft in the described post, this transmission shaft is by being installed on the described transmission shaft in the described hole of described layer and with paddle.
31. the method described in the claim 18, it also comprises following step: provide described liquid so that make a liquid countercurrent flow through another liquid with light phase and heavy phase.
32. the method described in the claim 31, it also comprises following step: with described light phase liquid dispersion in the continuous heavy phase liquid of counter-current flow.
33. the method described in the claim 31, it also comprises following step: described heavy phase liquid is dispersed in the continuously light phase liquid of counter-current flow.
34. the method described in the claim 18, it also comprises following step: the described structuring filling with frosting is provided.
35. the method described in the claim 18, it also comprises following step: frosting is offered the described agitator that contacts with described liquid and the surface of described post.
36. one kind is used for the first heavy phase liquid, and gently liquid is in the method for perpendicular post counter-current flow liquid-liquid extraction mutually with second, this post constitutes with the damping and the mixing zone of a series of axially staggered traverses, and described method comprises following step:
At least one agitator offered described mixing zone so as with non-perpendicular responsive to axial force in described liquid;
Will be at least in described vibration absorber one deck ripple contact plate of being generally face-to-face placement offer the structuring filling of waved plate class;
Described structuring filling is installed in the described vibration absorber; With
Make the 1st and the 2nd liquid flow cross described post.
37. the method described in the claim 36, it also comprises following step: with described light phase liquid dispersion in the continuous heavy phase liquid of counter-current flow.
38. the method described in the claim 36, it also comprises following step: described heavy phase liquid is dispersed in the continuously light phase liquid of counter-current flow.
39. the method described in the claim 36, it also comprises following step: frosting is offered the described agitator that contacts with described liquid and the surface of post.
40. the method described in the claim 36, it also comprises following step: form the described waved plate with general glossy surface finish.
41. the method described in the claim 36, it also comprises following step: form described plate by metal.
42. the method described in the claim 36, it also comprises following step: at least two packing layers of axially piling up are installed at least one described vibration absorber.
43. the method described in the claim 42, it also comprises following step: described the 2nd layer of filler in described two axial accumulation horizons revolved with respect to described the 1st layer of filler turn 90 degrees, thereby limit liquid bypass around it so that strengthen edge stopping property between described packing layer and the described post.
44. the method described in the claim 43, it also comprises following step: install adjacent to the 3rd layer of filler of described the 2nd layer of filler and with described the 2nd layer revolve on described the 3rd layer of filler of the stationkeeping that turn 90 degrees, so that further limit the bypass of its surrounding liquid.
45. one kind is used for the 1st heavy phase liquid, and gently liquid is in the method for perpendicular post counter-current flow liquid-liquid extraction mutually with the 2nd, this post constitutes with the damping and the mixing zone of a series of axially staggered traverses, and described method comprises following step:
Make the described the 1st and the 2nd liquid countercurrent flow through the described mixing zone that is used for wherein stirring;
Make the described the 1st and the 2nd liquid countercurrent flow through the structurizing ripple packing that is placed in the described vibration absorber, described filler comprises the general face-to-face contact plate that is placed in the described vibration absorber;
Collect described light phase liquid from the top of described post; With
Collect described heavy phase liquid from the bottom of described post.
46. the method described in the claim 45, it also comprises following step: with described light phase liquid dispersion in the continuous heavy phase liquid of counter-current flow.
47. the method described in the claim 46, it also comprises following step: described heavy phase liquid is dispersed in the continuously light phase liquid of counter-current flow.
48. the method described in the claim 45, it also comprises following step: frosting is offered the described agitator that contacts with described liquid and the surface of post.
49. the method described in the claim 45, it also comprises following step: the described the 1st and the 2nd liquid is flowed having between the waved plate of general glossy surface finish.
50. the method described in the claim 45, it also comprises following step: make the described the 1st and the 2nd liquid flow cross the packing layer of at least two axial accumulations at least one described vibration absorber.
51. the method described in the claim 50, it also comprises following step: described the 2nd layer of filler revolved with respect to the 1st layer of filler of described two axial accumulation horizons turn 90 degrees, thereby limit liquid bypass around it so that strengthen edge stopping property between described packing layer and the described post.
52. the method described in the claim 51, it also comprises following step: install adjacent to the 3rd layer of filler of described the 2nd layer of filler and with described the 2nd layer revolve on described the 3rd layer of filler of the stationkeeping that turn 90 degrees, so that further limit the bypass of its surrounding liquid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52958995A | 1995-09-18 | 1995-09-18 | |
| US08/529,589 | 1995-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1201400A true CN1201400A (en) | 1998-12-09 |
Family
ID=24110523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96198114A Pending CN1201400A (en) | 1995-09-18 | 1996-08-12 | Agitated-packed extraction column |
Country Status (9)
| Country | Link |
|---|---|
| KR (1) | KR19990045745A (en) |
| CN (1) | CN1201400A (en) |
| AR (1) | AR003544A1 (en) |
| AU (1) | AU6844396A (en) |
| BR (1) | BR9610523A (en) |
| CA (1) | CA2232382A1 (en) |
| CO (1) | CO4560416A1 (en) |
| TW (1) | TW325413B (en) |
| WO (1) | WO1997010886A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104245075A (en) * | 2012-02-14 | 2014-12-24 | 苏舍化学技术有限公司 | Extraction column and process for use thereof |
| TWI607794B (en) * | 2012-12-21 | 2017-12-11 | 素路彩化學股份有限公司 | A liquid-liquid extraction system and process for use thereof |
| CN109912045A (en) * | 2019-03-22 | 2019-06-21 | 河海大学 | a permeable reactive wall |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2521966C1 (en) * | 2013-01-09 | 2014-07-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Белгородский государственный технологический университет им. В.Г. Шухова" | Bubble extractor |
| RU2528678C2 (en) * | 2013-01-09 | 2014-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Белгородский государственный технологический университет им. В.Г. Шухова" | Multi-stage bubbling extractor |
| EP2886175A1 (en) | 2013-12-18 | 2015-06-24 | Sulzer Chemtech AG | Counter-current extraction column with an agitating internal and a static internal |
| CN106669225A (en) * | 2017-01-12 | 2017-05-17 | 清华大学 | Composite impulse extracting tower |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2493265A (en) * | 1947-11-26 | 1950-01-03 | Hoffmann La Roche | Extraction apparatus |
| US5185106A (en) * | 1990-11-27 | 1993-02-09 | Glitsch, Inc. | Tower packing with small louvers and mixing method |
| US5219533A (en) * | 1991-11-18 | 1993-06-15 | General Electric Company | Apparatus for solvent extraction process |
-
1996
- 1996-08-12 WO PCT/US1996/012997 patent/WO1997010886A1/en not_active Application Discontinuation
- 1996-08-12 CA CA002232382A patent/CA2232382A1/en not_active Abandoned
- 1996-08-12 AU AU68443/96A patent/AU6844396A/en not_active Abandoned
- 1996-08-12 BR BR9610523A patent/BR9610523A/en not_active Application Discontinuation
- 1996-08-12 KR KR1019980701988A patent/KR19990045745A/en not_active Application Discontinuation
- 1996-08-12 CN CN96198114A patent/CN1201400A/en active Pending
- 1996-09-09 TW TW085111006A patent/TW325413B/en active
- 1996-09-10 AR ARP960104296A patent/AR003544A1/en unknown
- 1996-09-18 CO CO96049681A patent/CO4560416A1/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104245075A (en) * | 2012-02-14 | 2014-12-24 | 苏舍化学技术有限公司 | Extraction column and process for use thereof |
| CN104245075B (en) * | 2012-02-14 | 2017-03-22 | 苏舍化学技术有限公司 | Extraction column and process for use thereof |
| TWI607794B (en) * | 2012-12-21 | 2017-12-11 | 素路彩化學股份有限公司 | A liquid-liquid extraction system and process for use thereof |
| CN109912045A (en) * | 2019-03-22 | 2019-06-21 | 河海大学 | a permeable reactive wall |
| CN109912045B (en) * | 2019-03-22 | 2021-08-27 | 河海大学 | Permeable reactive barrier |
Also Published As
| Publication number | Publication date |
|---|---|
| TW325413B (en) | 1998-01-21 |
| KR19990045745A (en) | 1999-06-25 |
| CA2232382A1 (en) | 1997-03-27 |
| WO1997010886A1 (en) | 1997-03-27 |
| AR003544A1 (en) | 1998-08-05 |
| AU6844396A (en) | 1997-04-09 |
| BR9610523A (en) | 1999-07-06 |
| CO4560416A1 (en) | 1998-02-10 |
| MX9802125A (en) | 1998-08-30 |
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