Volatilization of Refractory Silica in Hydrogen Water Vapour Gas Streams

The volatilization of silica (SiO2) from refractory concrete has been studied extensively and reaction thermodynamics are also well published. Understanding the degradation of the refractory containing silica in hydrogen /steam gases at temperature is important when designing and selecting refractory linings for gasifiers or boilers particularly in low temperature processes such as ammonia plant transfer lines which operate in the temperature range of 700°C to 950°C.

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