Treating Gasoline Sweetening Process by Merichem Chemicals & Refinery Services

Application: MERICAT systems oxidize mercaptans to disulfides by reacting mercaptans with air and caustic in the presence of catalyst using FIBER-FILM Contactor technology.

Description: In a MERICAT system, the caustic phase flows along the fibers of the FIBER-FILM Contactor as it preferentially wets the fibers. Prior to entering the FIBER-FILM Contactor the gasoline phase mixes with air through a proprietary air sparger. The gasoline then flows through the caustic-wetted fibers in the Contactor where the mercaptans are extracted and converted to disulfides in the caustic phase. The disulfides are immediately absorbed back into the gasoline phase. The two phases disengage and the caustic is recycled back to the FIBER-FILM Contactor until spent.

Competitive advantages: FIBER-FILM Contactor technology uses smaller processing vessels while guaranteeing the sodium content of the product. This saves valuable plant space and reduces capital expenditure.

Licensor: Merichem Chemicals & Refinery Services LLC, Process Technology Division.