Honeycomb Ceramic for Heat Recovery
Honeycomb Ceramic for Heat Recovery
High Temperature Air Combustion (HTAC) is new-type combustion technology with great energy-saving and environment protection. This technology is to make two regenerators to absorb heat and send out heat alternatively through the reversal valve, recuperate the heat of the exhaust gas to the maximum extent, then heat the combustion-supporting air and coal gas to over 1000℃, even the inferior fuel of lower calorific power can also catch fire steadily and burns high-efficiently. The heat storage honeycomb ceramic as heat exchange media is the key part of HTAC.
Technical Data Sheet
Name | Alumina | Dense Cordierite | Porous Cordierite | Dense Alumina | Mullite | Corundum mullite | |
Density(g/cm3) | 2.0~2.3 | 2.1 ~2.5 | 1.7 ~2.0 | 2.4 ~2.7 | 2.0 ~2.5 | 2.3 ~2.7 | |
Coefficient of heat expansion (×10-6K-1) (20~800℃) | ≤5 | ≤3.5 | ≤3.0 | ≤5 | ≤5 | ≤6 | |
Specific Heat (J/Kg.K) (20~1000℃) | 900-1150 | 900 ~1100 | 900~1150 | 1000~1150 | 1000~1150 | 1100 ~1300 | |
Thermal Conductivity (W/m.k) (20~1000℃) | 1.5~2.0 | 1.5~2.5 | 1.2~1.8 | 1.5~2.5 | 1.5~2.0 | 1.5~2.5 | |
Impact Thermal Resistance(℃/min) | ≥450 | ≥500 | ≥500 | ≥450 | ≥500 | ≥450 | |
Max. Working Tem.(℃) | 1350 | 1320 | 1320 | 1350 | 1450 | 1550 | |
water absorption(%) | 15-25 | ≤5 | 15~25 | ≤5 | 15~25 | 15 ~25 | |
compressive strength(MPa) | A axis | ≥32 | ≥29 | ≥34 | ≥36 | ≥28 | ≥39 |
B axis | ≥8 | ≥6 | ≥8 | ≥8 | ≥8 | ≥10 | |
chemical composition(%) | Al2O3 | 55 ~65 | 25 ~38 | 28 ~38 | 55 ~65 | 60 ~70 | 70 ~80 |
SiO2 | 25~35 | 50 ~60 | 45 ~55 | 25 ~35 | 25 ~35 | 15 ~25 | |
MgO | 1~3 | 5 ~10 | 12 ~14 | 3~5 | 0 ~1 | 0 ~2 | |
others | <5 | <5 | <5 | <5 | <5 | <5 | |
Advantage:
high temperature resistance, corrosion resistance, good thermal shock resistance, high strength, large heat storage capacity, good thermal conductivity, etc., and the energy saving effect and the service life are greatly improved.
Functions:
1. Reduce the thermal loss of exhaust gas, and improve the efficiency of fuel to save energy as.
2. Enhance the burning temperature based on theory, improve the atmospheric burning, meet the high temperature of thermal equipment enlarge low calorific value fuel, especially the application range of blast furnaces, improve the efficiency of calorific value fuel and reduce the emissions from low calorific value coal gas.
3. Improve the terms of heat exchange in hearths, increase the output of equipment, enhance the quality of products and cut down on reinvesting in equipment.
4. Reduce the exhaust emission of thermal equipment, alleviate the air pollution and improve the environment.
Application:
Widely used in all kinds of heating furnace, hot blast furnace, heat treatment furnace, cracking furnace, baking equipment, melting furnace, soaking furnace, oil and gas boiler furnace in iron and steel industry, machinery industry, building materials industry, chemical industry, petrochemical industry, paint industry, non-ferrous metal smelting industry.
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