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Inert
alumina ceramic ball
(1) Introduction
The inert alumina ceramic ball is broadly utilized as the
covering or supporting materials of the catalyst in the reactors
and the packing in the columns in such varied areas, for example,
petroleum, chemical industry, chemical fertilizer, natural
gas, and environmental protection etc. There are lots of merits
for it, for instance, the stronger resistance to high temperature
and high pressure, lower ratio of the moisture absorbing,
more stable chemical properties, and so on. It is capable
of enduring the corrosion of acid, alkali, and organic solvent.
In addition, it can also bear the rapid transitions of temperature
during the operation. In fact, its principal functions are
to accelerate the distribution of gas or liquid, and support
or protect the active catalyst, which especially has the relevantly
lower mechanical strength.
This product, which had been developed by our group company,
had gained the award of excellent new product and the prize
of the science and technology improvement of Jiangxi province
in 1988. In the same year, this product entered the national
honor roll of the excellent new product. In 1990, it gained
the national certificate of the science and technology achievements.
In 1996, it also got the provincial certificate and the golden
prize of the famous brand product. Of late years, it has always
been recommended by SINOPEC. Since it entered the market,
all circles of customers had realized that its properties
and effects are the same as the foreign products, and some
of the technological index has surpassed the same foreign
products.
(2) Chemical constitutions
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Chemical
compositions
|
Content
|
|
AL2O3
|
(Standard
value +4) %
|
|
AL2O3+SiO2
|
≥92%
|
|
Fe2O3
|
<1%
|
(3) Physical and
chemical properties
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Main crystal phases
AL2O3
Property
|
Feldstar
|
Feldstar-mullite
|
Mullite
|
Mullite-corundum
|
Corundum
|
|
20-25
|
25-45
|
45-70
|
70-90
|
>90
|
|
Bulk
density, (g/cm3)
|
1.4-2.0
|
|
Water
sorption, （%）
|
<3
|
<1
|
|
Acid
resistance（%）
|
>98
|
|
Alkali
resistance（%）
|
>80
|
>82
|
>85
|
>90
|
>95
|
|
Spalling resistance（℃）
|
>250
|
>300
|
>500
|
>700
|
>800
|
|
Refractoriness(℃)
|
>1300
|
>1400
|
>1500
|
>1600
|
>1700
|
|
Crushing
strength, KN/particle
|
Ø6
|
>0.40
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>0.45
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>0.6
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>0.7
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>0.8
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Ø8
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>0.7
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>0.8
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>0.9
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>1.0
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>1.2
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Ø10
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>0.9
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>1.0
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>1.2
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>1.5
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>1.8
|
|
Ø13
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>1.2
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>1.3
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>1.6
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>1.8
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>2.0
|
|
Ø16
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>1.5
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>1.6
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>1.8
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>2.3
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>2.6
|
|
Ø20
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>1.8
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>2.0
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>2.3
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>2.8
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>3.20
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Ø25
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>2.5
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>2.8
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>3.2
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>3.6
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>4.0
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Ø30
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>2.8
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>3.0
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>3.5
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>4.0
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>4.5
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Ø38
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>4.0
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>4.5
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>5.0
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>5.5
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>6.0
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Ø50
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>6.0
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>6.2
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>10.0
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>10.5
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>11.0
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Ø60
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>8.0
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>8.5
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>11.0
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>12.0
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>14.0
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Ø75
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>13.0
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>11.0
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>12.0
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>14.0
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>15.0
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Note: It may only be provided as the reference for the bulk
density, and it is not as the evidence of check.
(4) Main specifications and types
a) Specifications and allowable deviation of diameter
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DiameterØ
|
3
|
6
|
8
|
10
|
13
|
16
|
20
|
25
|
30
|
38
|
50
|
65
|
75
|
|
Allowable
deviation
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±1.0
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±1.5
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±2.0
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±3.0
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The product of other
specifications can also be prepared according to customers'
requirement.
b) Assortments
In accordance with the content of inert AL2O3 from 25% to
95%, there are 17 assortments on every 5% as a grade.
|
No.
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1
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2
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3
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4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
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|
AL203 content, (%)
|
<25
|
25
|
30
|
35
|
40
|
45
|
50
|
55
|
60
|
65
|
70
|
75
|
80
|
85
|
90
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95
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>95
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(5) Notice to ordering goods
a) When ordering goods, customers should introduce the
radical situations of the equipment,
including the sizes of reactors, and the operational temperature
etc.
b) Customers should provide the specification, types, and
the total content of Si, Al related to the required product.
c) As the inert ceramic ball belongs to the natural tight
stacking in the reactors, customers should consult with our
technological staff to determine the amounts according to
the practical loading volume, and remain 15-20% margins.
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