Commercial Dewaxing by Hydroisomerization

FIGURE 10.19 Schematic of Chevron hydroisomerization dewaxing process. 

By 2004, this technology had penetrated so far that Chevron33 had licensed some 150,000 bpd in design capacity, while ExxonMobil s MSDW catalyst was in use in eight units with lube production capacity of more than 100,000 bpd.30 

Hydrocracker/Dewaxing Arab Light VGO to Make Finished 150N with 100 VI 

Using isodewaxing to make group II base stocks allows the refiner to lower processing severity in the hydrocracker and substantially increase yields. 

Source W. Qureshi, L. Howell, C.-W. Hung, and J. Xiao, Isodewaxing—Improving Refining Economics, Petroleum Technology Quarterly Summer 17-23 (1996). Table copyrighted by Chevron Corporation and used with permission. 

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