CN2625026Y - Heterotypic cylindrical particles - Google Patents
Heterotypic cylindrical particles Download PDFInfo
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- CN2625026Y CN2625026Y CN 03213520 CN03213520U CN2625026Y CN 2625026 Y CN2625026 Y CN 2625026Y CN 03213520 CN03213520 CN 03213520 CN 03213520 U CN03213520 U CN 03213520U CN 2625026 Y CN2625026 Y CN 2625026Y
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Abstract
The utility model relates to an irregular cylindrical particle which takes the cylinder as the base, 2 to 5 foliiform columns which are symmetrical and whose vane section takes a shape of a ganoderma lucidum are formed with a gain groove; the section shape of the gain groove is bottleneck-shaped, the outer curved surface of the vane, the vane angle curved surface and the gain groove curved surface are tangentally connected, which forms the irregular cylinder with the smooth transitional outer surface. The structure of the irregular cylindrical particle provided in the utility model solves the problems of that the irregular cylindrical particle in the existing technology has the easy locking, the small void ratio, the small outer surface area, the low crushing strength, the easy generation of powder, the nonuniform extenal diffusion, etc., and can be used in a plurality of kinds of catalysts and their carriers or other fillings.
Description
Technical field
The utility model relates to a kind of different cylindricality particle, especially for the different cylindricality particle of catalyst and carrier or chemical filler, specifically has the different cylindricality catalyst of special cross section shape and carrier thereof, chemical filler particle.
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 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.Go out the vertical connection place of two sides with the bottom land of part in addition in the Shen, very easily produce fracture and fragmentation, 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 grain shapes such as carrier or filler thereof, when effectively reducing locking, increasing compressive resistance, increase external surface area and bed voidage, reduce chip and produce, the different surfaces orientation of same particle is even to the vertical diffusion distance of entity inside.
The structure of the utility model catalyst and carrier thereof or filler is: based on cylinder, construct 2～5 leaf posts that symmetry, blade profile are glossy ganoderma (or mushroom) shape, 3 or 4 leaf Special-Shaped Column generally commonly used with groove.On the cross section, groove forms the curve arc groove cross section with bottleneck shape opening by constituting groove camber line and circumscribed in opposite directions intersecting of adjacent two leaf angle camber lines between leaf; The blade outer end by one section outer camber line and two leaf angle camber lines in opposite directions inscribe intersect and constitute, form glossy ganoderma (or mushroom) shape blade profile; Extrados, leaf angle cambered surface are connected with the groove cambered surface is tangent, constitute the different cylindricality of the utility model outer surface rounding off.
Constituting groove camber line, leaf angle camber line and the outer camber line of the utility model cross section, be smooth curve, comprise quadratic equation curves such as circular arc, elliptic arc, parabola, hyperbola, also can be other equation of higher order curves.Groove camber line, leaf angle camber line and outer camber line can be respectively same kind curve, also can be respectively the variety classes curve.Design and make for convenient enforcement, preferably adopt circular arc or elliptic arc.
Compared with prior art, the utlity model has following advantage: 1, under the identical or close situation of voidage, the bottleneck shape groove opening of different cylindricality catalyst of the present invention and carrier thereof, chemical filler has reduced to produce the probability and the degree of locking greatly; And adopting equal volume (or weight) preparation peripheral diameter, post bar body that the groove A/F is identical or close, the present invention can obtain higher cross section voidage, helps increasing the voidage of whole filling bed.2, 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, different cylindricality catalyst of the present utility model and carrier thereof, chemical filler, all axial external surface are geometric curved surfaces, the existing general post bar close with Dimensions compared, and has bigger external surface area, helps diffuse fluid.4, 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 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 three leaf column section schematic diagrames, 1. is outside diameter among the figure, 2. is leaf angle circular diameter, 3. is the groove circular diameter, 4. is the narrowest width of petiole.
Fig. 2 is the utility model four leaf column section schematic diagrames, 1. is outside diameter among the figure, 2. is leaf angle circular diameter, 3. is the groove circular diameter, 4. is the narrowest width of petiole, 5. is that the cores angle of core is to foreign round justified at two leaf angles of a blade.
Fig. 3 is the structure of catalyst carrier particle shown in the USP4394303.
Fig. 4 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.Groove camber line, leaf angle camber line and outer camber line all adopt the circular arc design among the figure.
In the utility model structure, the maximum peripheral diameter of outside diameter decision Special-Shaped Column of the present invention, according to finished product purposes difference, 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 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.
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 different column construction of three leaves, each dimension scale is preferably as follows (as shown in Figure 1):
3. 2. leaf angle circular diameter determine the void area branch rate and the notch size in cross section with the groove circular diameter, also determine the compressive resistance of finished product.3. groove circular diameter span is 3. determined with outside diameter ratio 1. that by the groove circular diameter this ratio is just effective less than 0.5, is generally 0.10～0.40, is preferably between 0.25～0.32; 2. circular diameter span 2. in leaf angle determines that with groove circular diameter ratio 3. this ratio generally is not more than 1.0, is preferably between 0.4～0.8 by leaf angle circular diameter.The narrowest width of petiole is 4. closely related with the compressive resistance of finished product, also is the important parameter of the inside vertical diffusion distance difference in control finished product entity different surfaces orientation.2. the vertical diffusion distance difference mainly determines that with the narrowest width of petiole ratio 4. this ratio is generally 0.5～1.2, is preferably between 0.7～0.9 by leaf angle circular diameter.
In the different column construction of four leaves, each dimension scale is preferably as follows (as shown in Figure 2):
3. 2. leaf angle circular diameter determine the void area branch rate and the notch size in cross section with the groove circular diameter, also determine the compressive resistance of finished product.3. groove circular diameter span 3. determines that with outside diameter ratio 1. this ratio is generally 0.10～0.30, is preferably between 0.22～0.26 by the groove circular diameter; 2. circular diameter span 2. in leaf angle determines that with groove circular diameter ratio 3. this ratio generally is not more than 1.0, is preferably between 0.55～0.85 by leaf angle circular diameter.The narrowest width of petiole is 4. closely related with the compressive resistance of finished product, also is the important parameter of the inside vertical diffusion distance difference in control finished product entity different surfaces orientation.2. the vertical diffusion distance difference mainly determines that with the narrowest width of petiole ratio 4. this ratio is generally 0.5～1.2, is preferably between 0.7～0.9 by leaf angle circular diameter.4. 5. angle also determine the void area branch rate in cross section and notch size, the narrowest width of petiole simultaneously, and 5. angle is generally 20～60 °, is preferably between 35～45 °.
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, TiCl successively
3Solution, glacial acetic acid, water purification, material ingredient proportion (weight ratio):
Al
2O
3/ field/TiCl
3/ (1: 1) HAC/H
2O=1/0.2～0.5/0.10～0.5/0.08～0.12/1.1
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 list 1 and tables 2 such as side pressure mechanical strength and voidage.
The utility model abnormity three leaf column support A: press Fig. 1 and design, specifically be of a size of: outside diameter 1.=3.0mm, leaf angle circular diameter 2.=0.50mm, the groove circular diameter 3.=0.84mm, the narrowest width of petiole is 4.=0.65.
Three leaf column support A1 in the prior art: press Fig. 3 design (USP4394303 structure), specifically be of a size of: D=3.0mm, d=1.3mm.
The character of table 1 three leaf cylindricality catalyst carriers
| Carrier | Bulk density, g/ml | Mechanical strength, N/mm | Voidage, V% |
| The utility model three leaf column support A | 0.56 | 20 | 48 |
| Prior three-blade column support A1 | 0.63 | 14 | 35 |
The utility model abnormity four leaf column support B: press Fig. 2 structural design, specifically be of a size of: outside diameter 1.=3.0mm, leaf angle circular diameter 2.=0.50mm, the groove circular diameter 3.=0.72mm, the narrowest width of petiole 4.=0.33,5.=40 ° angle.
Prior art abnormity four leaf column support B1: press Fig. 4 design (CN1209359A structure), specifically be of a size of: r7=1.5mm, r8=0.6mm, r9=0.4mm.
The character of table 2 catalyst carrier
| Carrier | Bulk density, g/ml | Mechanical strength, N/mm | Voidage, V% |
| The utility model four leaf column support B | 0.362 | 16 | 60.4 |
| Existing four leaf column support B1 | 0.376 | 11.6 | 55.6 |
Claims (9)
1, a kind of different cylindricality particle, based on cylinder, it is characterized in that with groove construct symmetry, blade profile is 2～5 leaf posts of glossy ganoderma shape; On cross section, groove forms the curve arc groove cross section with bottleneck shape opening by constituting groove camber line and circumscribed in opposite directions intersecting of adjacent two leaf angle camber lines between leaf; The blade outer end by one section outer camber line and two leaf angle camber lines in opposite directions inscribe intersect and constitute, form glossy ganoderma shape blade profile; Extrados, leaf angle cambered surface are connected with the groove cambered surface is tangent, constitute the different cylindricality of outer surface rounding off.
2,, it is characterized in that described groove camber line, leaf angle camber line and outer camber line are circular arc, elliptic arc, parabola or hyperbolic shape according to the described different cylindricality particle of claim 1; Groove camber line, leaf angle camber line and outer camber line are a kind curve or several curve.
3, according to claim 1 or 2 described different cylindricality particles, it is characterized in that described blade is 3, particle is the different column constructions of three leaves, and groove camber line, leaf angle camber line and outer camber line are circular arcs.
4, according to the described different cylindricality particle of claim 3, the ratio that it is characterized in that groove circular diameter and particle outside diameter is 0.10～0.40, the ratio of leaf angle circular diameter and groove circular diameter is not more than 1.0, and leaf angle circular diameter and the petiole ratio of narrow width are 0.5～1.2.
5, according to the described different cylindricality particle of claim 3, the ratio that it is characterized in that groove circular diameter and particle outside diameter is 0.25～0.32, the ratio of leaf angle circular diameter and groove circular diameter is 0.4～0.8, and leaf angle circular diameter and the petiole ratio of narrow width are 0.7～0.9.
6, according to claim 1 or 2 described different cylindricality particles, it is characterized in that described blade is 4, particle is the different column constructions of four leaves, and groove camber line, leaf angle camber line and outer camber line are circular arcs.
7, according to the described different cylindricality particle of claim 6, the ratio that it is characterized in that groove circular diameter and particle outside diameter is 0.10～0.30, the ratio of leaf angle circular diameter and groove circular diameter is not more than 1.0, and leaf angle circular diameter and the petiole ratio of narrow width are 0.5～1.2.
8, according to the described different cylindricality particle of claim 6, the ratio that it is characterized in that groove circular diameter and particle outside diameter is 0.22～0.26, the ratio of leaf angle circular diameter and groove circular diameter is 0.55～0.85, and leaf angle circular diameter and the petiole ratio of narrow width are 0.7～0.9.
9,, it is characterized in that described cylinder diameter is 0.5～300mm according to the described different cylindricality particle of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213520 CN2625026Y (en) | 2003-05-31 | 2003-05-31 | Heterotypic cylindrical particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213520 CN2625026Y (en) | 2003-05-31 | 2003-05-31 | Heterotypic cylindrical particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2625026Y true CN2625026Y (en) | 2004-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03213520 Expired - Lifetime CN2625026Y (en) | 2003-05-31 | 2003-05-31 | Heterotypic cylindrical particles |
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| Country | Link |
|---|---|
| CN (1) | CN2625026Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623854A (en) * | 2008-10-20 | 2014-03-12 | 亨斯迈石油化学有限责任公司 | Modified trilobe shape for maleic anhydride catalyst |
| RU222955U1 (en) * | 2023-11-08 | 2024-01-24 | Глеб Андреевич Бусыгин | Nozzle element for nozzle devices |
-
2003
- 2003-05-31 CN CN 03213520 patent/CN2625026Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623854A (en) * | 2008-10-20 | 2014-03-12 | 亨斯迈石油化学有限责任公司 | Modified trilobe shape for maleic anhydride catalyst |
| US8993473B2 (en) | 2008-10-20 | 2015-03-31 | Huntsman Petrochemical Llc | Modified trilobe shape for maleic anhydride catalyst |
| RU222955U1 (en) * | 2023-11-08 | 2024-01-24 | Глеб Андреевич Бусыгин | Nozzle element for nozzle devices |
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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: 20130531 Granted publication date: 20040714 |