Sulfur Recovery Unit (SRU) Inline Heater

Inline heaters are usually designed to raise the temperature of the sulfur-containing process gas to at least 500°F above the normal operating temperature of the catalytic reactor. Because this equipment is located just upstream of the catalytic equipment, it is essential that this heater produces soot-free flue products and that all of the oxygen used to support combustion is consumed by the burner without any oxygen slippage to the downstream equipment. The burner is installed in a refractory lined combustion chamber, and hot combustion gases are mixed with the process gas to reach the reactor inlet temperature.