Heat Media for RTO
|
Introduction: The advantage of monolithic
honeycombs is that they provide the highest possible heat recovery with the
lowest possible pressure drop. A defined laminar gas flow prevents blocking,
particle adsorption and corrosion attacks. RTO units equipped with honeycomb
ceramic heat media are easy and cost-efficient to operate and maintain. They are
most reliable and economical solution for thermal oxidizers.
Type | Property | Units | Cordierite Porous |
Cordierite Dense |
Mullite | Alumina Porcelain |
Stoneware |
Corundum | |
1 | Material Density | g / cm3 |
1.70 -1.90
|
> 2.3
|
>3.0 |
>2.6 |
> 2.1
|
>2.8
| |
2 | Bluk Density | g / cm3 |
0.89 |
0.90 |
-- |
1.0 |
-- |
-- | |
3 | Specific Surface Area | m2/g |
0.20 -0.30
|
-- |
-- |
-- |
-- |
-- | |
4 | Coefficient of Thermal Expansion(20 -1000) | 10^-6 / k |
< 3.4
|
< 5.0
|
6.2 |
< 6.5
|
4
- 6 |
4
- 6 | |
5 | Heat Capacity(20 -1000) | J / kg.k |
700 - 800
|
850 - 1000
|
850 -1050
|
800 -900
|
850 - 910
|
1000 -
1300 | |
6 | Thermal Conductivity(350卤25C) | w / m.k |
1.3 -1.5
|
1.5 -2.5
|
1.5 -
2.0 |
1.5 -
2.0 |
-- |
1.5 -
2.0 | |
7 | Resistance to thermal Shocks (Minimum) |
K |
300 |
250 |
350 |
150 |
250 |
450 | |
8* | Axial crushing strength | Dry | Kg / block |
2000 |
>=4000
|
-- |
-- |
-- |
-- |
Immersion |
>=2000
|
>=4000
|
-- |
-- |
-- |
-- | |||
9 | Water Absorption | % |
25卤5 |
1卤2 |
13 |
8 |
15 |
10 | |
10 | Maximum Operating Temperature | C |
1400 |
1400 |
1600 |
1400 |
1300 |
1600 |
Chemical Composition:
Chemical Composition | Alumina Porcelain | High silicon | Cordierite | Mullite | Corundum Honeycomb Ceramic | unit |
SiO2 |
39.63 |
60.3 |
58.17 |
30~35 |
24-26 |
% |
Al2O3 |
53.52 |
26.3 |
33.44 |
60~65 |
48-52 |
% |
MgO |
3.31 |
7.69 |
7.00~7.50 |
~~~
|
4.7 |
% |
Fe2O3 |
0.61 |
1.08 |
0.83 |
0.50~0.70 |
>2.6 |
% |
CaO,K2O,Na2O |
<1 |
4.23 |
<2.0 |
0.80~1.20 |
3.00~3.50
|
% |
TiO.BaO |
1.53 |
0.40 |
0.36 |
~~~
|
~~~ |
% |
Cr2O3 |
~~~
|
~~~
|
~~~
|
~~~
|
3-5 |
% |
ZrO2 |
<0.02 |
~~~
|
1.76 |
~~~
|
2 |
% |
Specification:
Type |
Channels&Dimensions(mm) |
Specifications | English Units | Metric Units | Remarks |
MJ?1 |
25*25 150*150*300 |
Width of Channels | 0.193 in | 4.9卤0.1 mm | Also available with any length between 50mm-300mm |
Inner Walls | 0.043 in | 1.0卤0.1 mm | |||
Specific surface area | 164.6 ft2/ ft3 | 540 m2/m3 | |||
Free cross section | 67 % | 67 % | |||
MJ?2 |
40*40 150*150*300 |
Width of Channels | 0.119in | 3.0卤0.1 mm | Also available with any length between 50mm-300mm |
Wall thickness | 0.028 in | 0.7卤0.1 mm | |||
Specific surface area | 251.5 ft2/ ft3 | 825 m2/m3 | |||
Free cross section | 64 % | 64 % | |||
MJ?3 |
43*43 150*150*300 |
Width of Channels | 0.114 in | 2.0卤0.1 mm | Also available with any length between 50mm-300mm |
Wall thickness | 0.020 in | 0.5卤0.1 mm | |||
Specific surface area | 304.9 ft2/ ft3 | 1000 m2/m3 | |||
Free cross section | 72 % | 72 % | |||
MJ?4 |
50*50 150*150*300 |
Width of Channels | 0.095 in | 2.4卤0.1 mm | Also available with any length between 50mm-300mm |
Wall thickness | 0.024 in | 0.6卤0.1 mm | |||
Specific surface area | 306.4 ft2/ ft3 | 1050 m2/m3 | |||
Free cross section | 63 % | 63 % | |||
MJ?5 |
60*60 150*150*300 |
Width of Channels | on request | on request | Also available with any length between 50mm-300mm |
Wall thickness | on request | on request | |||
Specific surface area | 412.4 ft2/ ft3 | 1353 m2/m3 | |||
Free cross section | 72 % | 72 % | |||
MJ?6 |
35*35 150*150*300 |
Width of Channels | 0.142 in | 3.6卤0.1 mm | Also available with any length between 50mm-300mm |
Wall thickness | 0.020 in | 0.5卤0.1 mm | |||
Specific surface area | 245.4 ft2/ ft3 | 805 m2/m3 | |||
Free cross section | 79 % | 79 % |
Available Specification
:150*100*100(mm),100*100*100(mm)
Application:
RTO * Regenerative thermal oxidisers (RTO) * Catalytic oxidisers (CO) * Re NOx processes * Fixed bed adsorbers * Bio-systems | |
* It is mainly used as heat accumulator in steel works, oil and chemical industry, heat and power plant, metallurgy and so on. It need not coat catalyst. |