Exxonmobil Research and Engineering Company

Exxonmobil Technology and Engineering Company

Bryan E Hagee

Charles Lambert Baker, Jr

Rugved P Pathare

Kendall S Fruchey

Lisa I-Ching Yeh

Debra A Sysyn

Yogi V Shukla

Frank C Wang

John E Lee

Bryan T Bowie

Ajit Bhaskar Dandekar

Timothy Lee Hilbert

Michael B Carroll

Bradley R Fingland

Richard Charles Dougherty

Larry Arthur Green

Frank Cheng-Yu Wang

Tracie L Owens

Eugenio Sanchez

Eric B Senzer

Kathleen E Edwards

Birbal Chawla

Camden N Henderson

Daniel J Eichelsdoerfer

Cathleen Yung

Gretchen L Holtzer

Rugved Prakash Pathare

Frank P Di Sanzo

Larry A Green

Systems and methods for implicit chemical resolution of vacuum gas oils and fit quality determination are disclosed. The systems and methods include utilizing an FT-IR spectrum of an unknown VGO composition, and a database of FT-IR spectra of known VGO compositions, to determine a model of composition for the unknown VGO composition. Additionally, the fit quality for the model of composition is determined by performing a partial least squares analysis on specific spectral regions of interest in the FT-IR spectrum of the unknown VGO composition.

Systems and methods for implicit chemical resolution of vacuum gas oils and fit quality determination

Systems and methods for determining performance properties of an unknown composition are disclosed. The performance properties can include a Research Octane Number (RON), a Motor Octane Number (MON), and/or a cetane number. The systems and methods include utilizing an optical spectrum of an unknown composition to determine a model of composition, where the model of composition includes a molecular identity and a relative abundance for components therein. The model of composition is then utilized to calculate one or more performance properties. Additionally, the fit quality for the model of composition is determined by performing a partial least squares analysis on specific spectral regions of interest in the optical spectra of the unknown composition.

Systems and processes for performance property determination using optical spectral data

Disclosed are Group III base stocks comprising at least 30 wt % naphthenes, a viscosity index from 120 to 145; and a unique ratio of molecules with multi-ring naphthenes to single ring naphthenes (2R+N/1RN). A method for preparing the base stocks is also disclosed. Also disclosed is a lubricating oil having the base stock as a major component, and an additive as a minor component.

Group III base stocks and lubricant compositions

A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by ultra violet (UV) spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.015 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100&#xb0; C. between 4 and 6 cSt. A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by UV spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.020 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100&#xb0; C. between 10 and 14 cSt. A lubricating oil having the base stock as a major component, and one or more additives as a minor component. Methods for improving oxidation performance and low temperature performance of formulated lubricant compositions through the compositionally advantaged base stock.

Base stocks and lubricant compositions containing same

Compositions are provided for lubricant base stocks produced from feeds such as vacuum resid or other 510&#xb0; C.+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks that are resistant to haze formation.

Bright stock production from deasphalted oil

Provided are high viscosity high quality Group II lube base stocks with improved properties produced by an integrated hydrocracking and dewaxing process. In one form, the Group II lube base stock includes greater than or equal to 90 wt. % saturates, and less than 10 wt. % aromatics, and has an aromatic performance ratio between 1.0 and 5.0. Also provided are lubricant formulations including the high viscosity high quality Group II lube base stock.

High viscosity high quality group II lube base stocks

A method to simulate distillation of a petroleum stream by comprehensive two-dimensional gas chromatography including the step of separating said petroleum stream with a two-dimensional gas chromatograph to determine polarity as a function of temperature, and integrating vertically the two-dimensional gas chromatograph at a given temperature to determine signal intensity as a function of temperature.

Simulation distillation by comprehensive two-dimensional gas chromatography

Two quantitative separation approaches to fractionate de-asphalted oils (DAOs) into seven classes of compounds (saturates, 1-4ring-aromatics, sulfides, and polars). In the first step (named as 'SGS') of present invention, the DAO of a petroleum vacuum resid is separated in to four classes of compounds, namely saturates, aromatics, and sulfides. In this first step of separation, about 3 grams of a DAO can be separated. Whereas in the second step (named as 'ARC' separation) of invention, only less than 300 mg of the aromatic fraction obtained in &#x201c;SGS&#x201d; (described above) can be further fractionated at very low temperature (about &#x2212;40 degrees centigrade) into 4 fractions, namely 1-ring, 2-ring, 3-ring, and 4-ring aromatics. The present invention protocol is suitable for a wide range of compositionally different DAOs of petroleum vacuum resids.

Fractionation of de-asphalted oil of vacuum resid using preparative high performance liquid chromatographic separations

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Hamilton, NJ, United States of America

Bryan E Hagee