CN101190406A - Filling structure for fluid exchange column - Google Patents
Filling structure for fluid exchange column Download PDFInfo
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- CN101190406A CN101190406A CNA2006101635252A CN200610163525A CN101190406A CN 101190406 A CN101190406 A CN 101190406A CN A2006101635252 A CNA2006101635252 A CN A2006101635252A CN 200610163525 A CN200610163525 A CN 200610163525A CN 101190406 A CN101190406 A CN 101190406A
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Abstract
The invention relates to a filling structure used for a fluid exchanging column. The structure restricts an exchanging surface for at least one liquid phase flowing downwards closely contacted with at least one gaseous phase flowing upwards. The structure is characterized in that the invention comprises multi-row containers formed by pipe bundle consisting of pipes (10); each pipe bundle comprises four pipes (10a to 10d) which respectively form the four direction (D10a to D10d) orientations with a certain angle with the axis line of the structure; the pipes form the passage of the external surface leading to the structure (1).
Description
Technical field
The present invention relates generally to the fluid communication apparatus field.This well-known equipment generally comprises cylinder blanket or the exchange column of realizing the exchange of at least two kinds of fluids therein.Usually described (material, heat or the like) exchange that is exchanged between liquid phase that flows downward and the gas phase that upwards flows.Exchange column is used to particularly carry out operations such as for example distillation (distillation column), condensation, rectifying, absorption, desorption, separation, extraction, precipitation, chemical reaction.
Background technology
Be to promote the exchange between the fluid, knownly can in exchange column, introduce packing elements, to increase the contact area between the fluid.This element for example can be by formations such as plate, ring (as drawing uncommon lattice ring), spirality parts.
Knownly can also utilize the grid that piles up or shelf, fiberfill or the like.
Yet there is restriction in the degree that can increase the exchange area in the exchange column: flow.By increasing the exchange area in the exchange column, owing to having promoted the close contact between the fluid to improve treatment effeciency.Yet, if the acquisition of this increase of exchange area impairs the flow by exchange column, for example use too fine and close filler, then treatment effeciency will reduce by having reduced the speed (being updated) that fluid flows, thus partial offset by increasing the effect that exchange area obtained.
Summary of the invention
The present invention attempts to propose a kind of new design that is used for the filler of fluid exchange column, and it can not reduce along the exchange area optimization that makes under the situation of the flow of exchange column between the fluid.
According to the present invention, this purpose realizes by such interstitital texture, this interstitital texture comprises appearance body (volume) or the assembly that the tube bank that is made of pipe by many rows forms, each tube bank comprises four pipes, these four pipes form the direction orientation of an angle respectively along four axis with this structure, described a plurality of pipes form a plurality of passages that lead to the outer surface of this structure.
Thus, interstitital texture of the present invention provides big exchange area when keeping flow.Flow through between the fluid of this structure exchange not only in the inside of this pipe, but also carry out in the outside of this pipe, wherein said pipe itself constitutes the flow channel that a plurality of promotion fluids flow through exchange column.
The appearance body (or cavity volume) of this structure may further include a plurality of holes between pipe, so that be that the liquid and gas that flow through this structure limit additional channel.
Described pipe can be made by carbon-to-carbon or ceramic composite, metal, thermoplastic or thermosets.
Can also provide the macropore (macropore) or the opening of passage to increase exchange area by pipe is had between pipe inside and outside.
The surface of pipe can also be loaded with chemical catalyst.
The present invention also provides a kind of manufacture method that is used for the interstitital texture of fluid exchange column, the method is characterized in that it comprises:
A) form pipe;
B) the orderly assembly of described pipe is constructed in the tube bank that is made of pipe with many rows, and each tube bank comprises four pipes that are orientated along four direction respectively;
C) described pipe is bonded together by its contact portion; And
D) this orderly assembly is carried out machined, to form and the shape of its fluid exchange column that will insert and the interstitital texture that inside dimension is complementary.
In one aspect of the invention, in step a), described pipe is made by carbon or ceramic composite.In this case, this method may further include by heat treatment and makes the step of pipe carbonization and succeeded by the step of the chemical vapor deposition (CVD) of carbon.
According to a further aspect in the invention, described pipe is made by carbon composite, thereby this method further comprises the step that makes the pipe oxidation make its surface hydrophilic (promptly becoming water-wetted surface).At the end of this step, can by utilization contain the solution impregnation pipe of catalyst and by this solution of evaporation drying to make the surface coverage of pipe that catalyst be arranged on the surface of only catalyst being stayed pipe.
Description of drawings
From the explanation of the following specific embodiment of the present invention that provides as non-limitative example with reference to accompanying drawing, other features and advantages of the present invention will become apparent, wherein:
Fig. 1 is the flow chart of each sequential steps in according to the implementation process of the manufacture method of interstitital texture of the present invention;
Fig. 2 A-2D is the perspective view that illustrates according to the structure of orderly pipe assembly of the present invention;
Fig. 3 A-3B is the photo of orderly pipe assembly constructed in accordance;
Fig. 4 is the perspective view according to an embodiment of interstitital texture of the present invention;
Fig. 5 A and 5B are the photos of an embodiment of interstitital texture of the present invention;
Fig. 6 is an example that is combined with the interstitital texture of Fig. 3 in fluid exchange column;
Fig. 7 is the height map diagrammatic view that the catalyst solution that just is deposited on the hydrophobic surface is shown; And
Fig. 8 is the height map diagrammatic view that the catalyst solution that just is deposited on the water-wetted surface is shown.
The specific embodiment
The manufacture method that this explanation is described from reference Fig. 1-4 according to the interstitital texture of one embodiment of the invention.
This structure is made of the hollow pipe assembly.Therefore, first step (step S1) is to form hollow pipe.This pipe can be by composite for example carbon or pottery (SiC) or in fact made by metal, thermoplasticity or thermosets.This pipe preferably has thin as far as possible wall thickness, so that the hollow sectors optimization of this structure.
For the pipe of making by composite (for example carbon pipe or SiC pipe), this pipe can for example be formed by braid, filament winding, strip winding, perhaps by keep by the pultrusion manufacturing and on support bar alternatively profile and fixed by the liquid technology, promptly by the resin that can be burnt (cokefied) and permeate resin impregnating braid and the pipe of resin crosslinks is formed for example by heat treatment.
This pipe is preferably made by carbon/carbon compound material antiacid with it and that resistance to corrosion is celebrated.
Then, utilize the pipe that forms in the abovementioned steps to construct orderly assembly.Along four different directions deployment tube (step S2).Fig. 2 A shows the tube bank that is made of four pipe 10a-10d, and wherein each pipe extends along one of four mounting direction D10a-D10d.Except these pipes at the diagonal joining place at cubical center and non-intersect but (or crossover) intersected with each other near this point, these pipes are corresponding with cubical four diagonal (or four high/limits of positive tetrahedron) respectively in this example at the four direction D10a-D10d that assembles time institute edge.
The structure of orderly assembly for example can be from repeating the arrangement of Fig. 2 A, i.e. new tube bank that constitutes by pipe 10a-10d of edge structure axis XX ' placement, and the same sequence tissue that this new tube bank is located in the crosspoint of its four pipes with last tube bank, or the like.Shown in Fig. 2 B, just produce like this by the beginning of passing through the orderly assembly that the tube bank that constitutes of pipe 10a-10d forms along the first row 100a of axis X X ' arrangement.This forms the chi structure of four pipe 11-14, wherein extends in the plane of one of four mounting directions of the pipe of each sheet in the tube bank of edge orientation.Pipe in each sheet is each other to allow the distance of pipe by (intersection is passed) in other sheet to separate.
In case in row 100a, reach the tube bank number of expectation, just in a row restrain, with the empty cavity volume around the row of the filling 100a along the stacked a plurality of series of axle parallel with XX ' axis.Fig. 2 C shows the deployment scenarios that is parallel to the tube bank of another row 100b on the new axis X bX ' b that constructs axis XX ' at.The empty cavity volume of the either side of row 100a all is filled subsequently, and common end up to the pipe of arranging 100a is with the three-dimensional structure that obtains to be made of the pipe that extends along four respective direction in described cavity volume.Fig. 3 A and 3B show by tool support this by the pipe 10 assemblies of making.
Produce the orderly assembly that is the cuboid form basically shown in Fig. 2 D thus.Formed orderly assembly has a plurality of leading to the pipe 10 of all faces of (or opening arrives) assembly.
U.S. Patent No. 4168337 is described the method for a kind of utilization along the orderly assembly of linear element manufacturing of four direction layout in detail.
Afterwards, pipe is engaged/bond together (step S3).Only engage and carry out,, thereby provide additional flow path for managing outer fluid with hole or the passage between the reservation pipe in the place of pipe contact.Joint between the pipe for example can utilize resin to finish, and notes monitoring the amount of resin of deposition simultaneously, to avoid the hole between the chock tube.
Afterwards, assembly is carried out (machine) processing, to form the interstitital texture (step S4) that is complementary with the size and dimension that will place its fluid exchange column.
Fluid exchange column, for example distillation column generally include columniform shell.In this case, assembly is by machined in order, and to obtain being similarly columniform interstitital texture, the space also provides exchange surface as much as possible (Fig. 4) thus in the maximum exchange column so that occupy.Yet interstitital texture of the present invention also can have some other shapes.
This assembly can be by using the cutting of pressurization water spray or using ultrasonic, laser, milling machine etc. to carry out machined, to form this interstitital texture.
And, alternatively, when pipe by composite for example carbon or pottery (SiC) when making, can apply heat treatment, so that the piece section carbonization of pipe, and can then carry out alternatively or, with the joint between the reinforced pipe and improve its resistance to corrosion succeeded by the chemical vapor deposition (CVD) of carbon.
According to said method and as shown in Figure 4, obtain an interstitital texture 1, it comprises the compacting block section of pipe 10, all pipes 10 are all along with respect to one of the four direction D10a-D10d of the axis AA ' of this structure inclination, its axis AA ' is corresponding with the axis of the exchange column that will put into this structure, make thus and can guarantee that each pipe is predetermined gradient, be downward through this structure to allow liquid phase.
Fig. 5 A and 5B are respectively side view and the planes by an embodiment who uses the interstitital texture of being made by the pipe 10 of fixed braid manufacturing.Particularly, Fig. 5 B shows and can flow through a plurality of flow paths of interstitital texture of the present invention mutually for each.
Fig. 6 shows an example of the interstitital texture 1 that is incorporated in the fluid exchange column, and wherein said fluid exchange column is used to carry out mixing between liquid phase that flows downward and the gas phase that upwards flows.Structure 1 can be remained in the cylinder blanket 2 of fluid exchange column by support plate 3,4 and lasso 5, and wherein said lasso 5 is corrugated in this example, but it can be level and smooth equally well, and comprises eyelet alternatively.Be used to keep the element of interstitital texture maybe can utilize some other materials to make by making with this structure identical materials.
Because the shape of interstitital texture 1, can go up in large tracts of land (exchange area) between liquid phase that flows downward and the gas phase that upwards flows and realize contact closely.Liquid phase flows through interstitital texture along inside and/or the outside a plurality of passages that form at pipe 10 under gravity.When moving down, liquid phase is met with the gas phase of passing this structure that rises along a plurality of passages, thus make in this structure a plurality of positions and thus in the exchange that takes place on the big exchange area between the two-phase.
Interstitital texture of the present invention provides big exchange area for fluid thus, and does not have big loss in head.Interstitital texture has relatively low density of material and can be fluid provides the pipe of a plurality of passages to arrange.Any position in structure no matter, liquid and gas all can flow at an easy rate along pipe or between pipe, avoid thus producing significant loss in head between the bottom of exchange column and top.
Available exchange area in the interstitital texture, be the area that under the situation that gas phase exists, soaked in the structure by liquid phase in this example not only corresponding to the inner surface of pipe, also corresponding to the part that does not contact with other pipe on its outer surface, liquid and gas all can flow equally well in pipe with outside the pipe.
The exchange area of this structure can be suitable for allowing liquid phase stream to cross and further increase with macropore that passes tube wall or opening that gas phase comes in contact by providing.For example, macropore or opening can form by utilizing drilling tool, laser beam, water notes or the suitable technology of material any and the manufacturing pipe that tube wall is punched.By another example, can obtain described macropore or opening equally when making by braid as mentioned above at pipe.In this case, use diameter to increase braid angle, to be formed the macropore that passes braid after fixed at braid greater than the stay pipe in the cross section of braid.Macropore or opening preferably distribute along even tube wall.The shape and size of macropore or opening can be different, and mainly determine according to exchange area that will obtain in structure and flow.
Interstitital texture shown in Fig. 5 A and 5B (utilizing diameter is the structure that the fixed carbon braid pipe of 10 millimeters (mm) is made) is tested.These test shows, interstitital texture of the present invention demonstrate the more performance that interstitital texture with prior art is identical or compare.This test shows, the hollow sectors of interstitital texture of the present invention are about 94% (hollow sectors of existing structure is 92%-97%), and wetting (i.e. exchange) area is about 600 square metres of every cubic metre of (m
2/ m
3) (be 150-350m by contrast in the existing structure
2/ m
3), and at 40-100 cubic meter (m per hour
3Dry-pressing head loss under/h) the air mass flow is 0.6-7 millibar (mbar) (being 0.3-7mbar by contrast in the existing structure).
The feasible physical parameter (exchange area, flow velocity, boundary layer or the like) that can control the exchange column inner fluid of the geometry of interstitital texture of the present invention.Interstitital texture can for its character of fluid of the flowing through contact performance that provides suitable (for example angle of wetting, surface can, absorption or the like) that is complementary.
For example, the pipe in this structure can have the contact surface that is made of carbon, and it can be that self property owing to the material that forms pipe causes, and perhaps also can for example deposit RESEARCH OF PYROCARBON and causes by applying surface treatment.In this case, the contact surface of pipe and thus the exchange surface of interstitital texture be hydrophobicity and can be by the fine wetting surface of hydrocarbon (hydrocarbon).Therefore, when relating to organic fluid, this surface can be used steadily.
On the contrary, exist under the situation of water, this hydrophobic exchange surface also is not suitable for.But, can become the hydrophobic carbon surface hydrophilic by hot chemical treatment well known by persons skilled in the art.These are handled and particularly to comprise oxidation processes, its change the roughness on surface and the most important thing is by grafted functional group change the surface can, be also referred to as and make functionalisation of surfaces.This oxidation should be considered from the aspect that electronics shifts, and can implement in the following manner:
Along with temperature is elevated to more than 400 ℃, or by applying plasma, the controlled oxidation that in air, carries out;
Use for example chemical oxidation that carries out such as bleaching agent, nitric acid, heavy-oxygen-enriched water of oxidizing solution; Or
The electrochemical oxidation that uses interstitital texture to carry out as the electrode in the electrolytic vessel (male or female).
After this oxidation processes with situation about existing mutually in oxygen containing oxidation under, the carbon contact surface has polar functional group such as hydroxide (hydroxyl), carboxyl or the quinone functional group of grafting.Can also obtain the functional group of other type, for example comprise nitrogen functional group's oxidation phase time acquisition amine in existence.
The existence of these functional groups has changed the particularly wettability of the surface for polar solvent such as water.
This functionalized swap table area in interstitital texture on surface also has favourable part in the time of also will serving as the carrier of the required catalyst of subsequent chemical reaction.The interpolation of catalyst (or catalyst precarsor) is undertaken by this structure utilization being made catalyst emit and be dispersed in this structural solution impregnation.Then by the described solution of evaporation drying, on this surface, only to stay catalyst.
By hydrophobic surface 15 as shown in Figure 7, because this surface has big angle of wetting, the solution 20 that contains catalyst 21 tends to agglomeration and also forms not coalescent big individual drops 22 together, thereby make that catalyst 21 causes influencing the uneven distribution of the catalyst of chemical reaction efficiency subsequently with the form distribution of big bunch 23 spot after drying.
Fig. 8 is applicable to functionalized filler, so its contact surface 16 is hydrophilic and presents little angle of wetting.In this case, as can be seen, the solution 20 that contains catalyst 21 spread out and with the form drying of homogeneous film 24, thereby guarantees that catalyst 21 very well is distributed on the surface of structure, and can obtain the better control of chemical reaction subsequently by means of catalyst thus.
Claims (16)
1. interstitital texture (1) that is used for fluid exchange column, described structure will be for limiting exchange surface with at least one liquid phase that flows downward that at least one gas phase that upwards flows takes place to contact closely, this structure is characterised in that, it comprises the appearance body that is formed by the tube bank of managing (10) formation by many rows, each tube bank comprises four pipes (10a-10d), these four pipes (10a-10d) form direction (D10a-D10d) orientation of an angle respectively along four axis with this structure, described a plurality of pipes form a plurality of passages that lead to the outer surface of this structure (1).
2. structure according to claim 1 is characterized in that, four pipes (10a-10d) of a tube bank are along cubical four diagonal orientation.
3. structure according to claim 1 and 2 is characterized in that, described pipe (10) is connected with each other by its contact portion.
4. according to any described structure among the claim 1-3, it is characterized in that described appearance body comprises a plurality of holes that are positioned between the described pipe (10), thereby be that the liquid and gas that flow through this structure limit additional channel.
5. according to any described structure among the claim 1-4, it is characterized in that this structure is cylindrical, each pipe (10) tilts with respect to the axis of this cylindrical structural (AA ').
6. according to any described structure among the claim 1-5, it is characterized in that described pipe (10) is made by composite, metal, thermoplastic or thermosets.
7. according to any described structure among the claim 1-6, it is characterized in that described pipe (10) is made by carbon-to-carbon or ceramic composite.
8. structure according to claim 7 is characterized in that, described pipe (10) has the macropore that passage is provided between described pipe inside and outside.
9. according to claim 7 or 8 described structures, it is characterized in that described pipe (10) is made by carbon composite and comprise chemical catalyst (21) on its surface (16).
10. manufacture method that is used for the interstitital texture (1) of fluid exchange column the method is characterized in that it comprises:
A) form pipe (10);
B) the orderly assembly of described pipe is constructed in the tube bank that is made of pipe (10a-10d) with many rows, and each tube bank comprises four pipes that are orientated along four direction (D10a-D10d) respectively;
C) described pipe (10) is bonded together by its contact portion; And
D) this orderly assembly is carried out machined, to form and the shape of its fluid exchange column that will insert and the interstitital texture that inside dimension is complementary.
11. method according to claim 10 is characterized in that, in step a), described pipe (10) is made by composite, metal, thermoplastic or thermosets.
12. method according to claim 11 is characterized in that, in step a), described pipe (10) is made by carbon or ceramic composite.
13. method according to claim 12 is characterized in that, further comprises by heat treatment making the step of described pipe (10) carbonization and succeeded by the step of the chemical vapor deposition (CVD) of carbon.
14., it is characterized in that in step b), four pipes (10a-10d) of each tube bank are along cubical four diagonal orientation according to any described method among the claim 10-13.
15. method according to claim 10 is characterized in that, in step a), described pipe (10) is made by carbon composite, and this method further comprises the described pipe of oxidation so that the hydrophilic step in its surface (16).
16. method according to claim 15 is characterized in that, further comprises utilizing the solution (20) that contains chemical catalyst (21) to flood the step of described pipe and the step of dry described solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101635252A CN101190406A (en) | 2006-11-29 | 2006-11-29 | Filling structure for fluid exchange column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101635252A CN101190406A (en) | 2006-11-29 | 2006-11-29 | Filling structure for fluid exchange column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101190406A true CN101190406A (en) | 2008-06-04 |
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ID=39485690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101635252A Pending CN101190406A (en) | 2006-11-29 | 2006-11-29 | Filling structure for fluid exchange column |
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| CN (1) | CN101190406A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512914A (en) * | 2015-09-15 | 2017-03-22 | Ifp新能源公司 | Optimized packing structure for fluid contacting column and manufacturing method |
| CN111050870A (en) * | 2017-06-20 | 2020-04-21 | 苏尔寿管理有限公司 | Liquid distributor of a separating device comprising a screen made of carbon composite material |
-
2006
- 2006-11-29 CN CNA2006101635252A patent/CN101190406A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512914A (en) * | 2015-09-15 | 2017-03-22 | Ifp新能源公司 | Optimized packing structure for fluid contacting column and manufacturing method |
| CN111050870A (en) * | 2017-06-20 | 2020-04-21 | 苏尔寿管理有限公司 | Liquid distributor of a separating device comprising a screen made of carbon composite material |
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