Fluid Catalytic Cracking (FCC) plants are used to convert heavy distillates into lighter ones like gasoline and diesel. The raw material is primarily vacuum gas oil, often mixed with refinery residues.
The main products are as follows:
- Gas fraction (mainly C3/C4)
- Liquid fraction
- Coke (solid formation on the catalyst)
The FCC units produces sulfur dioxide and nitrogen oxides (NOx) and these particles are tightly regulated. This requires refiners to control NOx emissions to ensure they do not impair air quality.
We provide solutions that concentrates on air regeneration with oxygen which helps to improve regenerator capacity, while reducing emissions and increasing operational flexibility.
FCC oxygenation involves adding a controlled flow of gaseous oxygen into the combustion air. The additional oxygen in the regenerator improves plant efficiency due to:
- Increment in plant capacity by up to 35%
- Increased flexibility in the selection of raw material, allowing the use of heavier raw materials, especially those with a higher tendency to form coke
- Increased conversion ratio and gasoline yield
- Resolved air blower constraints
- Reduced CO in the regenerator exhaust
- Reduced catalyst wear and cyclone erosion due to reduced gas velocity, resulting in less downtimes and repairs
We offer the LOTOX® technology to help control particulates, sulfur dioxide and NOx emissions from the FCC. LOTOX® is a patented innovation that uses ozone to selectively oxidize insoluble NOx into a highly soluble particle that can be easily removed in a wet scrubber. Benefits include increased conversion rates, increased flexibility in feed selection, increased capacity and reduced emissions.