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US 8,956,581 B2Granted
Base oil manufacturing plant
AssigneeChevron U.S.A. Inc.
InventorsJohn Michael Rosenbaum, Brent K. Lok, Kathy A. Helling, Stephen K. Lee, Ryan Joseph Schexnaydre
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Abstract
We provide a process to manufacture a base stock, comprising hydrocracking, separating, and dewaxing, wherein the base stock has a ratio of Noack volatility to CCS VIS at −25° C. multiplied by 100 from 0.15 to 0.40. We also provide a base stock made by a process, and a base oil manufacturing plant that produces the base stock.
Claims10
A base oil manufacturing plant, comprising:
- a hydrocracking reactor comprising a product slate containing greater than 20 wt % of a waxy intermediate fraction,
- a first conduit from the hydrocracking reactor to a vacuum distillation tower, and
- a second conduit from the vacuum distillation tower to a hydroisomerization dewaxing reactor, wherein the hydroisomerization dewaxing reactor comprises a first base stock having:
- i. a first boiling range from 730 to 1000° F. (388 to 538° C.),
- ii. a first VI from 105 to 120,
- iii. a first CCS VIS at −25° C. from 2500 to 4500 mPa·s, and
- iv. a ratio of a first Noack volatility to the first CCS VIS at −25° C. multiplied by 100 from 0.15 to 0.40.
4 more elements
Dependencies are inferred from the claim text.