Ceramic Pall Ring
Ceramic pall ring has excellent acid resistance and heat resistance. It can resist to corrosion of various inorganic acids, organic acids and organic solvents except hydrofluoric acid, and can be used in high or low temperature conditions. Consequently the application range is very wide. The packing can be used in the drying columns, absorbing columns, cooling towers, scrubbing towers and actifier columns in chemical industry, metallurgy industry, coal gas industry, oxygen producing industry, etc.
1. Chemical Analysis
|
Al2O3
|
17-23%
|
|
SiO2
|
>70%
|
|
Fe2O3
|
<1.0%
|
|
CaO
|
<1.5%
|
|
MgO
|
<0.5%
|
|
K2O + Na2O
|
<3.5%
|
|
Other
|
<1%
|
2. Physical properties
|
Item
|
Value
|
|
Water absorption
|
<0.5%
|
|
Apparent porosity (%)
|
<1
|
|
Specific gravity
|
2.3-2.35
|
|
Operation temp.(max)
|
1000°C
|
|
Moh's hardness
|
>7 scale
|
|
Acid resistance
|
>99.6%
|
3. Geometric Characteristic data
|
Sizes
(mm) |
Thickness
(mm) |
Surface area
(m2/m3) |
Free volume
(%) |
Number
per m3 |
Bulk density
(kg/m3) |
|
25
|
3
|
210
|
73
|
53000
|
580
|
|
38
|
4
|
180
|
75
|
13000
|
570
|
|
50
|
5
|
130
|
78
|
6300
|
540
|
|
80
|
8
|
110
|
81
|
1900
|
530
|