Combustion processes are prevalent throughout the Refining and Petrochemical industries. The fuel supply to these processes contain unpredictable levels of sulfur compounds (H2S, Mercaptans, fuel sulfur, etc.). These sulfur compounds oxidize in the combustion to form SO2 and subsequently SO3. The SO3 gas, when combined with flue gas moisture forms H2SO4 (Sulfuric Acid).
Consequently downstream equipment is exposed to the risk of condensing acid, resulting in corrosion in ductwork and equipment as well as corrosion and/or fouling of equipment such as tube bundles and air preheaters.
Some of the upstream processes include:
- Refinery Fuel Gas and Oil Fired Heaters
- FCCU CO Boilers
- Steam Methane Reformers
- Power and process steam boilers
In order to avoid the effects of this acid, one must know the flue gas acid dew point. The Breen AbSensor-ADM takes the guess work out of the process by providing a real-time acid dew point measurement.