Exxonmobil Research and Engineering Company

Kenneth Chi Hang Kar

Stephen Harold Brown

Sheryl B Rubin-Pitel

Teng Xu

David T Ferrughelli

Federico Barrai

Brian A Cunningham

Anthony S Mennito

A first hydroprocessed product and a second hydroprocessed product produced from a multi-stage process for upgrading pyrolysis tar, such as steam cracker tar, are provided herein. Fuel blends including the first hydroprocessed product and/or the second hydroprocessed product are also provided herein as well as methods of lowering pour point of a gas oil using the first hydroprocessed product and the second hydroprocessed product.

Multi-stage upgrading pyrolysis tar products

Methods are provided for determining the compatibility of various grades of fuel oils, as well as methods for modifying fuel oils to improve compatibility and improved compatibility compositions. It has been discovered that the toluene equivalent solvation power of a blend of fuel oils does not vary in a straightforward manner with respect to the toluene equivalent solvation power of the individual blend components. Instead, it has been determined that the asphaltene content of the individual components can also influence the toluene equivalent solvation power of the final blend. Based on this discovery, methods are provided that can allow for modification of one or more components of a potential fuel oil blend. This can reduce and/or minimize the likelihood of asphaltene precipitation when a fuel oil blend is formed.

Modification of fuel oils for compatibility

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Philadelphia, PA, United States of America

Kenneth Chi Hang Kar