Exxonmobil Research and Engineering Company

Exxonmobil Technology and Engineering Company

Adrienne R Diebold

Kendall S Fruchey

Michael B Carroll

Lisa I-Ching Yeh

Camden N Henderson

Yogi V Shukla

Pilanda Watkins-Curry

Timothy Lee Hilbert

William R Gunther

Jason M McMullan

Vinit Choudhary

Systems and methods are provided for block operation during lubricant and/or fuels production from deasphalted oil. During 'block' operation, a deasphalted oil and/or the hydroprocessed effluent from an initial processing stage can be split into a plurality of fractions. The fractions can correspond, for example, to feed fractions suitable for forming a light neutral fraction, a heavy neutral fraction, and a bright stock fraction, or the plurality of fractions can correspond to any other convenient split into separate fractions. The plurality of separate fractions can then be processed separately in the process train (or in the sweet portion of the process train) for forming fuels and/or lubricant base stocks. This can allow for formation of unexpected base stock compositions.

Base stocks and lubricant compositions containing same

Adsorbents for aromatic adsorption are used to improve one or more properties of base stocks derived from deasphalted oil fractions. The adsorbents can allow for removal of polynuclear aromatics from an intermediate effluent or final effluent during base stock production. Removal of polynuclear aromatics can be beneficial for improving the color of heavy neutral base stocks and/or reducing the turbidity of bright stocks.

Removal of polynuclear aromatics from severely hydrotreated base stocks

Systems and methods are provided for block operation during lubricant and/or fuels production from deasphalted oil. During 'block' operation, a deasphalted oil and/or the hydroprocessed effluent from an initial processing stage can be split into a plurality of fractions. The fractions can correspond, for example, to feed fractions suitable for forming a light neutral fraction, a heavy neutral fraction, and a bright stock fraction, or the plurality of fractions can correspond to any other convenient split into separate fractions. The plurality of separate fractions can then be processed separately in the process train (or in the sweet portion of the process train) for forming fuels and/or lubricant base stocks. The separate processing can allow for selection of conditions for forming lubricant fractions, such as bright stock fractions, that have a cloud point that is lower than the pour point.

Block processing configurations for base stock production from deasphalted oil

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Lebanon, NJ, United States of America

Adrienne R Diebold