Can I send a 500 degC flammable gas direct to the flare or does this gas need to be cooled down e.g. to below <400 degC below the mechanical design temperature or a flare carbon steel line. Any company that are specialised in flare design that I can contact to assist my question?
You cannot safely send a 500°C flammable gas directly to a typical carbon steel flare line without addressing the following key issues:
Standard carbon steel used in flare headers and piping typically has a maximum operating temperature of around 425°C (797°F).
At 500°C, carbon steel can: Experience significant loss of strength and mechanical integrity, Be prone to creep, scaling, and even warping over time.
High-temperature gas may: Cause thermal expansion issues and induce thermal stresses in connected piping, Damage gaskets, insulation, or other nearby equipment. and Potentially ignite due to hot spots if there’s any leakage.
Most flare tips are designed for gas well below 500°C to prevent overheating or damage.
Higher temperatures can degrade tip metallurgy and shorten service life.