Chevron Research Company

KEITH McHENRY Chairman), Amoco Oil Company LESLIE BURRIS, Argonne National Laboratory ELTON J. CAIRNS, Lawrence Berkeley Laboratory NOEL JARRETT, Alcoa Laboratories FREDERIC LEDER, Dowell Schlnmberger JOHN SHINN, Chevron Research Company REUEL SHINNAR, City College of New York PAUL B. WEISZ, University of Peimsylvania... 

Howes, M. A. H., IIT Research Institute Hughes, R., Illinois State Geological Survey Hughes, T. R., Chevron Research Company Hunt, A. J., Lawrence Berkeley Laboratory Irving, J. P., Chevron Oil Field Research Co. Jacques, D., Exxon Chemical Comparer Jefcoat, I. A., University of Alabama Jezl, J. L., Amoco Chemicals Company Jerome, J., Northwestern University... 

Scott, C. D., Oak Ridge National Laboratory Scott, J. W., Chevron Research Company (retired) Shah, S. L., University of Alberta Shah, Y. T., University of Pittsbtrrgh Shaw, D., Texas Instruments, Inc. 

Chevron (2) A process for separating/i-xylene from its isomers by continuous crystallization, using liquid carbon dioxide in direct contact with the xylene as the refrigerant. Developed by the Chevron Research Company in 1966. 

Chevron WWT [Waste water treatment] An integrated process for treating sour water from oil refineries, particularly for removing ammonia, hydrogen sulfide, and carbon dioxide. Only physical processes are used—volatilization and condensation under various conditions. Developed by Chevron Research Company and used in 14 plants worldwide in 1985. Martinez, D., in Chemical Waste Handling and Treatment, Muller, K. R., Ed., Springer-Verlag, Berlin, 1986, 180. 

Isocracking A hydrocracking process developed and licensed by Chevron Research Company. The catalyst is nickel or cobalt sulfide on an aluminosilicate. First commercialized in 1962 more than 45 units had been built by 1994. See also Isomax. 

Paragon A two-stage hydrocracking process, based on the zeolite ZSM-5, claimed to increase the yield and quality of the gasoline produced. Developed by Chevron Research Company, but not commercialized by 1991. 

RDS Isomax [Residuum desulphurization] A hydrodesulfurization process for removing sulfur compounds from petroleum residues, while converting the residues to fuel oil. Developed by Chevron Research Company in the early 1970s. Ten units were operating in 1988. See also VGO Isomax, VRDS Isomax. 

Rheniforming [Rhenium reforming] A catalytic reforming process developed by Chevron Research Company. The catalyst formulation includes rhenium. First announced in 1967 and first commercialized in 1970 by 1988, 73 units had been licensed. 

VGO Isomax [Vacuum gas oil] A hydrodesulfurization process adapted for treating vacuum gas oil, a petroleum fraction. Developed by Chevron Research Company in the early 1970s. In 1972, five plants were in operation and six were under construction. See also RDS Isomax and VRDS Isomax. 

VRDS Isomax [Vacuum residua desulphurization] A hydrodesulfurization process adapted for processing the residues from the vacuum distillation of the least volatile fraction of petroleum. An extension of the RDS Isomax process, developed and piloted by Chevron Research Company in the early 1970s. In 1988, one unit was under construction and one was being engineered. 

Analytical Services Division at Chevron Research Company. 

J. R. Kittrell, Chevron Research Company, Richmond, California... 

Tosco Corporation Chevron Research Company Richmond Research Center... 

The authors are grateful to P. J. Angevine of Mobil Research and Development Corporation and R. L. Howell and J. G. Reynolds of Chevron Research Company for their careful review of the manuscript. Their comments and suggestions provided valuable guidance. 

Richard F. Sullivan, Editor Chevron Research Company... 

HARRY A. FRUMKIN, RICHARD F. SULLIVAN, and BRUCE E. STANGELAND Chevron Research Company, 576 Standard Avenue, Richmond, CA 94802... 

Chevron Research Company, 576 Standard Avenue, Richmond, CA 94802... 

This paper was prepared as an account of work performed by Chevron Research Company sponsored by the United States government. Neither Chevron, nor the United States, nor the United States DOE, nor any of their employees, nor any of their contractors, subcontractors, or their employees makes any warranty, express or implied, or assumes any legal liability of... 

We express our thanks to Mr. H. A. Frumkin for the process engineering advice Dr. E. J. Gallegos for the GC-MS analysis and the Analytical Department of Chevron Research Company for numerous feed and product analyses. Hydrocarbon Research,... 

ROBERT P. SIEG, Manager, Synthetic Fuels, Chevron Research Company I was just thinking of ati example of this type. It s... 

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