Silicon carbide, especially siliconized silicon carbide (SiSiC), continues to replace heat resistant stainless steel due to its vast shaping capabilites. Saint-Gobain, the industry leader in the development of silicon carbide materials, can produce nearly any shape, ranging from very small pieces to tubes measuring more than 3000mm.
The success story of the ceramic radiant tubes comes from the excellent high temperature properties of the ceramic as compared to conventional steel radiant tubes. The temperature limitation of such high temperature heat resistant steel radiant tubes is only approximately 1100°C. SiSiC ceramic radiant tubes from Saint-Gobain are heat resistant up to approximately 1350°C. The radiant emission power of SiSiC is twice that of ordinary materials, having values of 50 kW/m2 at 1100°C and 30 kW/m2 at 1250°C.
Combined with ceramic recuperators, burners and flame tubes out of SiSiC, a highly efficient, energy-saving burner system can be achieved. Other advantages include the lower specific weight, no further cleaning procedure for removal of oxidation layers, and lower maintenance costs.
|Domestic oil boilers:||
Due to the very high corrosion resistance, a very high application temperature up to approximately 1350°C for Silit® SKD SiSiC and no deposits of the fuel (oil), SiSiC is unbeatable vs. stainless steel.
|Wood pellet boiler burners:||
Wood pellets are not only wood. They have many other ingredients that can be very aggressive at high temperatures. Silit® SKD-H SiSiC withstands all the heavy corrosion mechanisms.
High performance heat exchangers use Silit® SKW high temperature resistant SiSiC for special regenerator burner systems.
|For other applications:||
Depending on the application temperature (up to 1700°C) and atmosphere, Hexoloy®, Silit® SKD-H, Advancer® or N-Durance® materials from Saint-Gobain could be used as a direct burner.
When given the choice between stainless steel and ceramic, silicon carbide is the obvious choice.