Chevron Isodewaxing

Isodewaxing A catalytic dewaxing process developed by Chevron Research Technology. It incorporates catalysts that achieve both wax isomerization and shape-selective cracking. 

The two lighter streams were catalytically dewaxed by a ZSM-5-type catalyst, while the heavy stream was solvent dewaxed (in a later modification, all streams were dewaxed by Chevron s Isodewaxing process, which isomerizes wax rather than hydrocracking it). 

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. 

Source M. W. Wilson, K. L. Eiden, T. A. Mueller, S. D Case, and G. W. Kraft, Commercialization of Isodewaxing—A New Technology for Dewaxing to Manufacture High-Quality Lube Basestocks, Paper FL-94-112, presented at the National Fuels and Lubricants meeting, National Petroleum Refiners Association, Houston, Texas, November 30, 1994. Figure copyrighted by Chevron Corporation and used with permission. 

Source K. R. Krishna, A. Rainis, R J. Marcantonio, J. F. Mayer, J. A. Biscardi, and S. I. Zones, Next Generation Isodewaxing and Hydrofinishing Technology for Production of High Quality Base Oils, Paper LW-02-128, presented at the Lubricants and Waxes meeting, National Petroleum Refiners Association, Houston, Texas, November 14-15, 2002. Table copyrighted by Chevron Corporation and used with permission. 

SCANfinrng (Exxon), OCTGAIN (Mobil), Prime G (Axens), and S Zorb (Phillips). 1993 Chevron cormnercializes Isodewaxing for converting waxy paraffins into high-quality lube base stock. 

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