CN2645761Y - Asymmetric isocylindrical granule - Google Patents
Asymmetric isocylindrical granule Download PDFInfo
- Publication number
- CN2645761Y CN2645761Y CN03284728.9U CN03284728U CN2645761Y CN 2645761 Y CN2645761 Y CN 2645761Y CN 03284728 U CN03284728 U CN 03284728U CN 2645761 Y CN2645761 Y CN 2645761Y
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- Prior art keywords
- blade
- leaf
- length
- particle
- ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000008187 granular material Substances 0.000 title abstract 3
- 239000002245 particle Substances 0.000 claims description 37
- 241000921313 Phyllopodium Species 0.000 claims description 13
- 239000000463 material Substances 0.000 abstract description 9
- 239000000843 powder Substances 0.000 abstract description 6
- 239000000969 carrier Substances 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 1
- 239000011800 void material Substances 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 25
- 239000000945 filler Substances 0.000 description 14
- 239000000126 substance Substances 0.000 description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000011049 filling Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000001935 peptisation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model relates to an asymmetric isocylindrical granule, three to six leave posts to be asymmetric are formed by intersecting a long thin bar shape with equal or unequal section length, a leave piece on which is arranged by radiating outwards from a point of intersection; on the cross section, the included angles among the leaves are equal while the length of the leaves are different; the leave piece is long thin bar-shaped, the outline of the leave piece is formed by intercrossing between a straight line and an arc line or between arc lines in inner tangency manner, and the radiating leave piece section with smooth and transiting outline is formed; the utility model solves the problems in the prior art where the isocylindrical granule is easily closed and locked, the void ration is small, the outer surface area is small, the powder is easily produced and the external spreading is not uniform., etc; and the utility model can be used for a plurality of types of catalyzer and carriers or for other packing materials.
Description
Technical field
The utility model relates to a kind of different cylindricality particle, especially for the asymmetric different cylindricality particle of catalyst and carrier or chemical filler.
Background technology
Usually need use catalyst and filler in fields such as oil, chemical industry, in some physics or chemical reaction process, sometimes need catalyst or filler to have bigger external surface area, or bigger bed voidage, or require simultaneously than big external surface area and bigger bed layer voidage, and the catalyst of regular shape or filler difficulty reach above-mentioned requirements, particularly be difficult to reach simultaneously above-mentioned two kinds of requirements.
More in the prior art about the report that changes shape of catalyst, as US4394303, US3966644, US3997426, US4342643 etc., they have introduced shape of catalyst such as three leaf bar shapeds, four leaf bar shapeds, hollow cylinder, hollow prism shape, ripple limit hollow cylinder, groove are cylindrical.Compare with traditional cylindrical and spheric catalyst,, all have the wedging latch-up problem between the particle to some extent though its particle is improving bed voidage in varying degrees, thus still very ineffective to increasing bed voidage.Though US4342643 considers to some extent to the problems referred to above, but deeply do not solve yet, because the extended line of two sides of its groove forms the groove of open shape thus through cylindrical axle center, thereby causes the protuberance of a certain particle to be embedded in the groove of another particle easily, cause the decline of voidage.At the vertical connection place of two sides and the bottom land of extension, very easily produce fracture and broken in addition, consequent fragment is easy to stop up reactor bed.CN1209359A discloses a kind of special-shaped catalyst supporter.This patent is by leaving two to four equal-sized arch grooves vertically equably at the cylinder periphery, form the bossy body of two to four symmetries respectively, make the bottom of each groove be the circular arc line in cylinder axle center dorsad: two straight flanges tangent with the channel bottom circular arc line are parallel lines, or the extended line of two straight flanges at the angle of cylinder axle center one side less than 25 °.This patent is improved groove and projection, has further reduced latch-up problem, has effectively increased the compressive resistance of carrier again.But this patent limits because of structure form, has following shortcoming: the one, can not obtain bigger cross section voidage, and because groove opening can not be too big, otherwise the groove latch-up problem still can not be avoided; The 2nd, intersect with tangent two straight flanges of channel bottom circular arc line and cylindrical and to form sharp edge, the not anti-external impacts of this sharp edge, fluid impact produces chip and powder under extruding and the work condition state because particle collides mutually in transportation and filling process, and these chips and powder also can stop up reactor bed.
In addition, in the above-mentioned various catalyst shape considerable part is arranged, material differs bigger in the vertical diffusion distance of the different surfaces orientation of same particle to entity inside, cause particle entity materials inside diffusion strength size to differ greatly, working life is different in size, even the diffusion dead angle that exists material not arrive, cause the waste of catalyst actual resource.
Summary of the invention
At the deficiencies in the prior art, the utility model designs a kind of catalyst and post bar grain shapes such as carrier or filler thereof, eliminate the mutual wedging latch-up phenomenon of adjacent particle on the structure to greatest extent, when effectively increasing bed voidage and external surface area, reduce chip and produce, make the different surfaces orientation of same particle even to the vertical diffusion distance of entity inside.
The structure of the utility model catalyst and carrier thereof or filler is: with equal in length on the cross section or the tall and thin bar shaped that does not wait intersect, construct asymmetric, blade by outside 3～6 leaf posts of radiation of intersection point, 4 leaf Special-Shaped Column generally commonly used.On the cross section, angle equates and leaf is long does not wait between leaf; Blade is tall and thin bar shaped, blade profile by straight line and camber line or camber line and camber line in opposite directions inscribe intersect and constitute, form the radial blade profile of profile rounding off; This radial blade profile constitutes the basis of the asymmetric different cylindricality particle of the axial outer surface rounding off of the utility model.
Constitute the blade of the utility model cross section, from inside to outside, be divided into three sections of phyllopodium, blade and end of blade, wherein phyllopodium and blade two side profile can be straight lines, can be curve also, and the end of blade profile are a curve.Described curve is smooth curve, comprises quadratic equation curves such as circular arc, elliptic arc, parabola, hyperbola, also can be other equation of higher order curves.Produce the crushing strength that reduces particle than mitre stress for fear of the blade intersection, phyllopodium two side profile are generally the smooth curve of symmetry and indent; Be the different surfaces orientation that makes particle vertical diffusion distance equalization to entity inside, blade two side profile preferred parallel straight lines, and also each sheet leaf is wide equates.Design and make for convenient enforcement, phyllopodium and end of blade profile preferably adopt circular arc or elliptic arc.
Compared with prior art, the utlity model has following advantage: 1, the not isometric structure of blade of asymmetric different cylindricality catalyst of the present utility model and carrier thereof, chemical filler, when toppling over filling naturally, the probability that the long blade energy wedging of identical leaf is banked up between particle very low (waiting the locking of linear leaf wedging is the main cause that existing leafy post bar particle reduces bed voidage), so just effectively avoid the wedging locking between adjacent particle, thereby increase the voidage of whole filling bed.2, asymmetric different cylindricality catalyst of the present utility model and carrier thereof, chemical filler, all axial external surface are for tangentially being connected smoothly, there is not any sharp edge, can effectively dissolve external impacts, reduce chip and the powder of particle under carrying and filling process and work condition state and produce, more effective bed of avoiding stops up.3, asymmetric different cylindricality catalyst of the present utility model and carrier thereof, chemical filler, all axial external surface are geometric curved surfaces or curved surface and plane combination, the existing general post bar close with Dimensions compared, and has bigger external surface area, helps diffuse fluid.4, asymmetric different cylindrical design of the present utility model, the distance to the diffusion of entity internal vertical is tending towards sparing one in the different appearances of particle orientation to make fluid, effectively improves catalyst actual resource utilization ratio.5, the utility model particle has bigger accumulation voidage and external surface area, and hydraulic performance is good, and the external diffusion resistance of particle is little, both can be used for the catalyst and the carrier thereof of heterogeneous catalytic reaction, also can be used for general chemical filler.
Description of drawings
Fig. 1 is the utility model four leaf column section schematic diagrames, 1. is phyllopodium among the figure, 2. is blade, 3. is end of blade; A, b, c, d are respectively four leaves and intersect the distance (leaf long) of mid point to each end of blade summit; R is the end of blade arc radius, also is the half-breadth of blade, and r is the phyllopodium arc radius.
Fig. 2 is the structure of catalyst carrier particle shown in the CN1209359A.
The specific embodiment
Further specify structure of the present utility model and feature below in conjunction with accompanying drawing.Phyllopodium and end of blade profile adopt circular arc, blade profile to adopt the parallel lines design among the figure.
In the utility model structure, the maximum Outside Dimensions of the total leaf of relative two Ye long (a+b and c+d) decision the utility model Special-Shaped Column, general a+b is 0.5～2.0 with the ratio of c+d, is preferably 1.According to finished product purposes difference, a+b (or c+d) span is between 0.5～300mm.As catalyst and carrier thereof, general span is 0.5～100mm, is preferably 1～60mm; As general chemical filler, general span is 1～300mm, is preferably 3～150mm.The length of different cylindricality particle is generally 3～100mm.
The utility model can adopt different materials according to finished product purposes difference.As catalyst carrier, can be aluminium oxide, silica, silica one aluminium oxide, magnesia, magnesia one aluminium oxide, clay, heat proof materials such as calcium aluminate; In these carriers, also can contain one or more molecular sieves, as X, Y, β, ZSM equimolecular sieve.As direct manufacturing catalyst, can be according to concrete catalysagen material formula, on above-mentioned a kind of or several carrier material bases, add required reactive metal component.As the present invention as chemical filler, can adopt the raw material of various nonmetal chemical industry fillers.
Asymmetric different cylindricality catalyst that the utility model provides and carrier thereof, chemical filler, its embodiment is easy: only need the aperture in the banded extruder orifice plate is designed to required shape, then with materials allocating, peptization, mixed pinching, after the orifice plate extrusion modling, drying, roasting steps such as (or sintering) obtain manufactured goods again.
In the asymmetric different column construction of four leaves shown in Figure 1, the crushing strength of each dimension scale decision finished product and filling voidage are preferably as follows:
Relative long a+b of two leaf leaves that intersects and c+d are equal, and between the longest and short blade, length of blade equal difference is successively decreased, and come into leaves the most ratio of length of the shortest Ye Changyu is generally 0.35～0.90, is preferably between 0.55～0.80; The ratio of the shortest leaf length of Ye Kuanyu is generally 0.30～1.00, is preferably between 0.55～0.70, and come into leaves the most ratio of length of Ye Kuanyu is generally 0.20～0.80, is preferably between 0.35～0.50; The wide ratio of phyllopodium arc radius and leaf is generally 0～1.0, is preferably between 0.20～0.50.
Below in conjunction with embodiment advantage of the present utility model is described.
Take by weighing aluminum hydroxide solid elastomer powder (boehmite) and add field mountain valley with clumps of trees and bamboo powder, glacial acetic acid, water purification successively, material ingredient proportion (weight ratio):
Al
2O
3/ field/(1: 1) HAC/H
2O=1/0.2～0.5/0.08～0.12/1.1
It is mixed pinch into plastic, extrusion modling on banded extruder obtains difformity catalyst carrier A, A1, B, B1 respectively, after drying, 550 ℃ of following roastings 5 hours, measure the bulk density of catalyst carrier, the results lists such as side pressure mechanical strength and voidage.
The asymmetric special-shaped four leaf column supports of the utility model: press Fig. 1 structural design, specifically be of a size of: each length of blade is respectively a=0.9mm, b=0.6mm, c=0.7mm, d=0.8mm, end of blade arc radius R=0.19mm, phyllopodium arc radius r=0.1mm.Particle is long to be 8mm.
Prior art abnormity four leaf column supports: press Fig. 2 design (CN1209359A structure), specifically be of a size of: r7=0.75mm, r8=0.3mm, r9=0.2mm.Particle is long to be 8mm.
The character of table 1 catalyst carrier
| Carrier | Bulk density, g/ml | Mechanical strength, N/mm | Voidage, V% |
| The utility model four leaf column supports | 0.53 | 12 | 60.4 |
| Existing four leaf column supports | 0.62 | 15.6 | 50.6 |
Claims (10)
1, a kind of asymmetric different cylindricality particle, it is characterized in that 3～6 blades of particle shape of cross section for outwards radiating by intersection point, angle equates and length of blade does not wait between blade, blade is tall and thin bar shaped, blade profile by straight line and camber line or camber line and camber line in opposite directions inscribe intersect and constitute, form the radial blade profile of profile rounding off.
2,, it is characterized in that the described number of blade is 4 according to the described particle of claim 1.
3, according to the described particle of claim 1, it is characterized in that described leaf cross-section from inside to outside, be divided into three sections of phyllopodium, blade and end of blade, wherein phyllopodium and blade two side profile are straight line or curve, and the end of blade profile is a curve.
4,, it is characterized in that described curve is circular arc, elliptic arc, parabola or hyperbola according to the described particle of claim 3.
5,, it is characterized in that described each sheet leaf is wide equal according to the described particle of claim 1.
6, according to the described particle of claim 2, it is characterized in that the ratio of the total leaf length of described relative two blades is 0.5～2.0, the total leaf length of relative two blades is 0.5～300mm.
7,, it is characterized in that come into leaves the most ratio of length of the shortest Ye Changyu is generally 0.35～0.90 according to claim 1 or 6 described particles.
8,, it is characterized in that come into leaves the most ratio of length of the shortest described Ye Changyu is generally 0.55～0.80 according to the described particle of claim 7.
9, according to the described particle of claim 7, the ratio that it is characterized in that the shortest leaf length of Ye Kuanyu is 0.30～1.00, and come into leaves the most ratio of length of Ye Kuanyu is 0.20～0.80, and the wide ratio of phyllopodium arc radius and leaf is 0～1.0.
10, according to the described particle of claim 9, it is characterized in that the wide ratio with the shortest leaf length of described leaf is 0.55～0.70, come into leaves the most ratio of length of Ye Kuanyu is between 0.35～0.50, the wide ratio of phyllopodium arc radius and leaf is 0.20～0.50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03284728.9U CN2645761Y (en) | 2003-09-15 | 2003-09-15 | Asymmetric isocylindrical granule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03284728.9U CN2645761Y (en) | 2003-09-15 | 2003-09-15 | Asymmetric isocylindrical granule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2645761Y true CN2645761Y (en) | 2004-10-06 |
Family
ID=34303901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN03284728.9U Expired - Lifetime CN2645761Y (en) | 2003-09-15 | 2003-09-15 | Asymmetric isocylindrical granule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2645761Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363106C (en) * | 2004-12-28 | 2008-01-23 | 中国石油化工股份有限公司 | Solid catalyst with particular form |
-
2003
- 2003-09-15 CN CN03284728.9U patent/CN2645761Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363106C (en) * | 2004-12-28 | 2008-01-23 | 中国石油化工股份有限公司 | Solid catalyst with particular form |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130915 Granted publication date: 20041006 |