Hydrofining reactions

The purpose of hydrofining reactions may vary with the feedstock. Gasolines or coke-oven light oil are treated to remove gum formers, that is, readily polymerizing olefins and sulfur compounds, while hydrogenation of aromatics must be avoided. Hydrogenation of kerosenes and Diesel... 

Tracer data of a pilot hydrofiner are tabulated with the plot. When the vessel was used as a reactor, 95% conversion was attained. The reaction is second order. Find the value of kC0 assuming segregated flow and compare with the plug flow value kC0 = 19. 

SCANfining [Selective Catalytic Naphtha Hydrofining] A selective catalytic hydrotreating process for reducing the sulfur content of naphtha. Developed by ExxonMobil and Albemarle. The catalyst, developed by ExxonMobil and Akzo Nobel, contains cobalt and molybdenum. The key feature is its prevention of the mercaptans reversion reaction—the formation of mercaptans from olefins and hydrogen sulfide. The process also minimizes olefin saturation and hydrogen loss. Operated at a number of refineries since 1990. 

---