CN202290056U - Special-shaped cylindrical particle - Google Patents
Special-shaped cylindrical particle Download PDFInfo
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- CN202290056U CN202290056U CN2011204026214U CN201120402621U CN202290056U CN 202290056 U CN202290056 U CN 202290056U CN 2011204026214 U CN2011204026214 U CN 2011204026214U CN 201120402621 U CN201120402621 U CN 201120402621U CN 202290056 U CN202290056 U CN 202290056U
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Abstract
The utility model discloses a special-shaped cylindrical particle. The special-shaped cylindrical particle is based on a cylinder, a plurality of open grooves are uniformly arranged on the peripheral edge along the axial direction, the sections of the grooves are of section parts of ovals with different sizes and radians, which are intersected with an outer circle, the depths of the different grooves are the same or different, and the formed solid body part is of the shape with a plurality of branches. Compared with the prior art, the cylindrical particle disclosed by the utility model can greatly improve the porosity and the outer surface area of the particle on the premise of basically maintaining the strength unchanged, reduce the probability and the extent of locking and solve the external diffusion problem. The special-shaped particle disclosed by the utility model can be used for various catalysts, carriers or fillers.
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, is different cylindricality carrier and catalyst, the chemical filler particle with special cross section shape and outward appearance specifically.
Background technology
Often use catalyst and filler at oil, chemical field; In some physics or chemical reaction process; Sometimes need catalyst or filler to have bigger external surface area, or bigger bed voidage, or require big external surface area and bigger bed layer voidage simultaneously; The catalyst of common shape or filler difficulty reach above-mentioned requirements, particularly are difficult to reach simultaneously above-mentioned two kinds of requirements.
Prior art is used shape of catalyst such as clover bar shaped, bunge bedstraw herb bar shaped, hollow cylinder, hollow prism shape, ripple limit hollow cylinder, groove be cylindrical always.Compare with spheric catalyst with traditional cylindrical, its particle is improving bed voidage in varying degrees, but also all has the latch-up problem between the particle, thereby still very ineffective to the increase of bed voidage.
CN92204475.9 disclose a kind of end surface shape be circular arc petal and with circular arc concentric, axial perforate particle, number of aperture is two, three or five.Though this structure can increase external surface area, also bring simultaneously problems such as intensity difference, and this perforate two ends are easy to blocked, the external surface area that endoporus provides can not make full use of, and has reduced the actual utilization ratio of particle.
CN97116251.4 discloses a kind of special-shaped catalyst supporter, is the basis with the cylinder, evenly leaves two to four equal-sized grooves vertically at its periphery, forms the bossy body of two to four symmetries respectively, and wherein groove is an arch.This patent structure can improve external surface area and voidage, but also exists latch-up problem to influence voidage simultaneously.
CN03213520.3 discloses a kind of different cylindricality particle, opens 2～5 grooves in cylinder circumference, and forming the cross section is the leaf post of glossy ganoderma shape.Said according to its claim, its groove and Ye Zhu are symmetric figure, and groove, leaf angle camber line are circular arc, elliptic arc, parabola or hyperbolic shape.This patent particle is used arcuate furrow, and groove opening is the bottleneck shape, has increased the external surface area of particle, has reduced latch-up phenomenon.But still existing, this patent can not obtain having problems of bigger voidage and latch-up phenomenon, the reduction that voidage increase simultaneously also brings intensity.
The utility model content
Not enough to prior art; The utility model has designed a kind of different cylindricality particle that is applicable to carrier and catalyst or filler; Can effectively reduce latch-up phenomenon, when intensity is constant basically, increase the external surface area and the bed voidage of particle greatly; Reduce the inwardly distance of diffusion of outer surface, increase the utilization rate of particle.
The technical scheme of the utility model is:
A kind of different cylindricality particle is the basis with the cylinder, it is characterized in that, around cylinder, offers some grooves vertically, and forming blade profile is 2 ~ 10 leaf posts of branch shape; On cross section, interlobate groove is intersected by the ellipse of different eccentricities and cylindrical and forms, the center of circle of long axis of ellipse and cylindrical point-blank, formation has the trench cross section of elliptical openings; The arc angle of Ye Zhu and oval slick and sly intersecting.
According to the different cylindricality particle of the utility model, described groove comprises deep trouth and shallow slot, and deep trouth and shallow slot are alternately.On the cross section of different cylindricality particle, the minimum range of deep trouth from the center of circle is 0.1 ~ 0.5 times of exradius, and the minimum range of shallow slot from the center of circle is 0.2 ~ 0.8 times of exradius.Greater than the minimum range of deep trouth from the center of circle, the former is generally 1.5 ~ 4 times of the latter to said shallow slot from the minimum range in the center of circle.Less than the outer arc length of leaf post, the leaf post just is not easy to enter into the inside of groove to the A/F of groove (promptly oval and cylindrical intersects the arc length that forms) like this, thereby has avoided the generation of latch-up phenomenon.
For have four deep trouths and four shallow slots 8 leaf post particles for, deep trouth is 0.1 ~ 0.5 times of exradius from the minimum distance in the center of circle, the minimum distance of shallow slot from the center of circle is 0.1 ~ 0.8 times of exradius.
And for 6 leaf post particles with three deep trouths and three shallow slots, the minimum distance of deep trouth from the center of circle is 0.1 ~ 0.5 times of exradius, and the minimum distance of shallow slot from the center of circle is 0.1 ~ 0.8 times of exradius.
On leaf cross-section, the minor axis of the ellipse that said deep trouth is corresponding and the ratio of major axis are 0.2 ~ 0.8, and the minor axis of the ellipse that shallow slot is corresponding and the ratio of major axis are 0.2 ~ 0.6.
Compared with prior art, the special-shaped particle of the utility model has following advantage:
1, the utility model carrier and catalyst or filler groove opening can improve the voidage of particle greatly.
2, when improving the particle voids rate, the hatch frame of narrow-mouthed bottle shape can reduce probability and the degree that locking produces significantly.
3, the leaf rod structure of branch shape when increasing voidage, can guarantee the intensity of particle.
4, compare with existing strip particle, the utility model has improved the external surface area of particle greatly, helps diffuse fluid.
5, branch shape structure and high external surface area make fluid at inside spread more even apart from what become of particle diverse location outer surface, and the particle equivalent diameter diminishes, and effectively improves the overall utilization rate of particle.
6, the utility model particle has big external surface area and voidage, and hydrodynamic performance is good, and particle external diffusion resistance is little, can be used for the catalyst and the carrier of heterogeneous catalytic reaction, also can be used for chemical filler.
Description of drawings
Fig. 1 is a kind of four deep trouths, four shallow slot leaf column section sketch mapes of the utility model.
1. being outside diameter among the figure, 2. is leaf angle circular diameter, 3. is the deep trench ellipse short shaft, 4. is the deep trench transverse, 5. is the shallow trench ellipse short shaft, 6. is the shallow trench transverse, 7. is the narrowest width of leaf post.
Fig. 2 is a kind of three deep trouths, three shallow slot leaf column section sketch mapes of the utility model.
1. being outside diameter among the figure, 2. is leaf angle circular diameter, 3. is the deep trench ellipse short shaft, 4. is the deep trench transverse, 5. is the shallow trench ellipse short shaft, 6. is the shallow trench transverse, 7. is the narrowest width of leaf post.
Fig. 3 and Fig. 4 are catalyst carrier particle structure shown in the CN03213520.3.
The specific embodiment
The utility model structure particles, the maximum peripheral diameter of the different cylindricality particle of body diameter decision the utility model.Different according to product purpose, span is between 1mm～200mm.Be used for carrier and catalyst, general span is between 1mm～100mm, is preferably between 5mm～50mm; Be used for chemical filler, general span is between 2mm～300mm, is preferably 2mm～200mm.Particle length can be as required, and span is between 1mm～200mm, preferred 5～50mm.
The utility model can be according to the different different materials that adopt of finished product purposes.As as carrier and catalyst, can use heat proof materials such as aluminium oxide, silica, silica-alumina, magnesia, magnesia-aluminium oxide, clay, also can contain one or more molecular sieves in the carrier.As prepare catalyst, can in above-mentioned carrier material, add active metal component according to concrete catalyst raw material and prescription.The utility model can adopt the raw material of various nonmetal chemical industry fillers as being used for preparing chemical filler.
Carrier of the utility model and catalyst or chemical filler; Its embodiment is easy: be designed to required the utility model shape to the eyelet of banded extruder orifice plate; The prefabricated then plastic that mixes certain material prescription; Adopt this orifice plate extrusion molding, pass through steps such as pelletizing shaping, drying, roasting again, obtain manufactured goods.
Embodiment 1～2
Take by weighing aluminum hydroxide solid elastomer powder (boehmite), add sesbania powder, nitric acid, water purification successively.
Press material ingredient proportion (weight ratio): Al
2O
3: sesbania powder: nitric acid: water purification=1: 0.01～0.1: 0.01～0.05: 1.0; With its mixed plastic of pinching into; Use and the identical orifice plate extrusion in the utility model abnormity particle cross section, extrusion molding on banded extruder obtains difformity catalyst carrier A and B respectively; After drying, 850 ℃ of following roastings 2 hours.The results such as bulk density, side pressure strength and voidage that measure catalyst carrier list in table 1 and table 2.
The utility model four deep trouths four shallow slot leaf column support A press Fig. 1 design; Specifically be of a size of: outside diameter 1.=5mm, leaf angle circular diameter 2.=0.1mm, the deep trench ellipse short shaft 3.=1mm; The deep trench transverse 4.=2.25mm; The shallow trench ellipse short shaft 5.=0.57, the shallow trench transverse 6.=1.40mm, the narrowest width of Ye Zhu 7.=0.51mm.
The utility model three deep trouths three shallow slot leaf column support B press Fig. 2 design; Specifically be of a size of: outside diameter 1.=3mm, leaf angle circular diameter 2.=0.1mm, the deep trench ellipse short shaft 3.=0.73mm; The deep trench transverse 4.=1.42mm; The shallow trench ellipse short shaft 5.=0.67, the shallow trench transverse 6.=1.23mm, the narrowest width of Ye Zhu 7.=0.3mm.
Comparative example 1～2
Take by weighing aluminum hydroxide solid elastomer powder (boehmite), add sesbania powder, nitric acid, water purification successively.
Press material ingredient proportion (weight ratio): Al
2O
3: sesbania powder: nitric acid: water purification=1: 0.01～0.1: 0.01～0.05: 1.0, it is mixed pinch into plastic, use the orifice plate extrusion corresponding with prior art; Extrusion molding on banded extruder; Obtain difformity catalyst carrier A1 and B1 respectively, after drying, 850 ℃ of following roastings 2 hours.The results such as bulk density, side pressure strength and voidage that measure catalyst carrier list in table 1 and table 2.
The similar carrier A 1 of prior art: press Fig. 3 design (CN03213520.3 structure), specifically be of a size of 1.=3mm, 2.=0.5mm, 3.=0.72mm, 4.=0.33mm.
The similar carrier B 1 of prior art: press Fig. 4 design (CN03213520.3 structure), specifically be of a size of 1.=3mm, 2.=0.5mm, 3.=0.84mm, 4.=0.65mm.
Table 1 groove leaf post catalyst carrier character
| Carrier | Bulk density, g/mL | Mechanical strength, N/mm | Voidage, v% |
| A | 0.37 | 20 | 63 |
| A1 | 0.362 | 16 | 60.4 |
Table 2 groove leaf post catalyst carrier character
| Carrier | Bulk density, g/mL | Mechanical strength, N/mm | Voidage, v% |
| B | 0.35 | 18 | 65 |
| B1 | 0.56 | 20 | 48 |
Claims (9)
1. a different cylindricality particle is the basis with the cylinder, it is characterized in that, around cylinder, offers some grooves vertically, and forming blade profile is 2 ~ 10 leaf posts of branch shape; On cross section, interlobate groove is intersected by the ellipse of different eccentricities and cylindrical and forms, the center of circle of long axis of ellipse and cylindrical point-blank, formation has the trench cross section of elliptical openings; The arc angle of Ye Zhu and oval slick and sly intersecting.
2. send out different cylindricality particle described according to claim, it is characterized in that described groove comprises deep trouth and shallow slot, deep trouth and shallow slot are alternately.
3. according to the described different cylindricality particle of claim 1, it is characterized in that on the cross section of different cylindricality particle, the minimum range of deep trouth from the center of circle is 0.1 ~ 0.5 times of exradius, the minimum range of shallow slot from the center of circle is 0.2 ~ 0.8 times of exradius.
4. according to the described different cylindricality particle of claim 1, it is characterized in that described shallow slot is 1.5 ~ 4 times that deep trouth leaves center of circle minimum range from the minimum range in the center of circle.
5. according to the described different cylindricality particle of claim 1, it is characterized in that the A/F of said groove is less than the outer arc length of leaf post.
6. according to the described different cylindricality particle of claim 1; It is characterized in that; Described different cylindricality particle is 8 leaf post particles with four deep trouths and four shallow slots; The minimum distance of deep trouth from the center of circle is 0.1 ~ 0.5 times of exradius, and the minimum distance of shallow slot from the center of circle is 0.1 ~ 0.8 times of exradius.
7. according to the described different cylindricality particle of claim 1; It is characterized in that; Described different cylindricality particle is 6 leaf post particles with three deep trouths and three shallow slots; The minimum distance of deep trouth from the center of circle is 0.1 ~ 0.5 times of exradius, and the minimum distance of shallow slot from the center of circle is 0.1 ~ 0.8 times of exradius.
8. according to the described different cylindricality particle of claim 1, it is characterized in that the minor axis of the ellipse that said deep trouth is corresponding and the ratio of major axis are 0.2 ~ 0.8, the minor axis of the ellipse that shallow slot is corresponding and the ratio of major axis are 0.2 ~ 0.6.
9. according to the described different cylindricality particle of claim 1, it is characterized in that described different cylindricality particle is used for carrier and catalyst, its outside diameter is 1mm～100mm; Said different cylindricality particle is used for chemical filler, and its outside diameter is 2mm～300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204026214U CN202290056U (en) | 2011-10-21 | 2011-10-21 | Special-shaped cylindrical particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204026214U CN202290056U (en) | 2011-10-21 | 2011-10-21 | Special-shaped cylindrical particle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202290056U true CN202290056U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204026214U Expired - Lifetime CN202290056U (en) | 2011-10-21 | 2011-10-21 | Special-shaped cylindrical particle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202290056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443023A (en) * | 2018-12-19 | 2019-03-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of pyramid pine material layer filler |
-
2011
- 2011-10-21 CN CN2011204026214U patent/CN202290056U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443023A (en) * | 2018-12-19 | 2019-03-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of pyramid pine material layer filler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
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| CX01 | Expiry of patent term |