ExoS™ is our exclusive sulfur extraction technology for mid-cut FCC naphtha. Proven in multiple successful field installations, ExoS is a simple process of extraction and distillation steps with no specialized equipment or hydrogen required. Generating an olefin-rich C6-C7 raffinate with less than 10 ppm Sulfur that bypasses the hydrotreater, ExoS is the environmentally friendly, low-waste generating method for meeting clean-fuel sulfur limits.
ExoS can be installed with a new hydrotreater to reduce the size, CAPEX and OPEX of the hydrotreater. It can also be installed as a revamp to save octane and free up hydrotreater capacity. With ExoS technology, you can utilize the olefin-rich raffinate stream directly in the gasoline blending pool or as feed to other processes.
The ExoS™ process technology offers the following advantages:
INVISTA offers a comprehensive technology transfer package and proprietary solvent for the ExoS™ process technology. INVISTA and its partners at Koch Engineered Solutions are open to expanded execution scope (EP, EPC, LSTK, etc.) to meet the needs of individual refineries.