Honeycomb Ceramic For RTO (Heat Media)
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, for the time being, the most economic solution for thermal oxidizers.
Physical Properties:
| 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±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±5 |
1±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±0.1 mm | Also available with any length between 50mm-300mm |
| Inner Walls | 0.043 in | 1.0±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±0.1 mm | Also available with any length between 50mm-300mm |
| Wall thickness | 0.028 in | 0.7±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±0.1 mm | Also available with any length between 50mm-300mm |
| Wall thickness | 0.020 in | 0.5±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±0.1 mm | Also available with any length between 50mm-300mm |
| Wall thickness | 0.024 in | 0.6±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±0.1 mm | Also available with any length between 50mm-300mm |
| Wall thickness | 0.020 in | 0.5±0.1 mm | |||
| Specific surface area | 245.4 ft2/ ft3 | 805 m2/m3 | |||
| Free cross section | 79 % | 79 % |
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. | |
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