Refineries generally process crude oil into motor and heating fuels, but also produce gaseous fuels, synthesis gases, petrochemicals and feeds for lubricant production and asphalt.
Refineries require large quantities of gases to control various processes. Pure oxygen, for example, is used to increase the efficiency of wastewater treatment.
Adding oxygen to the air in a plant can help increase plant capacity and remove bottlenecks, also improving ammonia conversion by removing sulphur oxides (SOx). Oxygen enrichment in a fluid catalytic converter can also increase capacity and give operators the flexibility to handle heavier feeds and loads by removing nitrogen oxides (NOx).