Hydrofining reactor

Followed by hydrofining reactor using nickel catalyst to remove. 2% aldehyde. 

ExxonMobil extended the Hydrofining technology to produce a 200 ppm diesel, with the Diesel Oil Deep Desulfurization technology, DODD. The reactor is packed with multiple beds of different catalysts. A preceding history of commercial experience provided data to build a model for deep HDS and pave the way to a new technology, MAK Fining. 

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. 

Figure 17.26. Reactor for hydrofining diesel oils, with ceramic lining (Sukhanov, Petroleum Processing, Mir, Moscow, 1982).

The Synthol light oil (Cs-Ci ) is highly olefinic and is isomerized over an acidic catalyst to improve the octane rating of the gasoline. The hydrocarbon products from the fixed-bed reactors arc distilled to separate the gasoline and diesel oil. The residue is vacuum-disiilled to produce medium wax (320 500 C) and hard wax (>500 C). Both products arc hydrofined using nickel catalysts to remove olefins and oxygenates. 

The SasoJ II plant ua S only Synthol reactors and the processing of the hydrocarbon products is somewhat different. It comprises catalytic reforming over Pt/Al2 03, hydrofining, isomerizaiion and selective hydrodewaxing. From the olefins only ethylene is recovered as such and the olefins are oligomerized... 

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