Exxonmobil Chemical Patents Inc.

Reyyan Koc-Karabocek

Teng Xu

James Harding Beech, Jr

Christopher M Evans

David T Ferrughelli

Kapil Kandel

Jeffrey C Yeh

James Richardson Lattner

Paul F Keusenkothen

John Scott Buchanan

David B Spicer

William Ernest Lewis

Bryan A Patel

John Slocum Coleman

Sumathy Raman

Mayank Shekhar

Frank Cheng-Yu Wang

Nikolaos Soultanidis

Samia Ilias

Mark A Rooney

William A Aslaner

Subramanya V Nayak

Cyrus J Rachal

Processes and systems for quenching an effluent. In certain embodiments, the process can include contacting a pyrolysis effluent and a first quench medium to produce a first quenched effluent. A bottoms stream that can include tar and an overhead stream that can include ethylene and propylene can be obtained from the first quenched effluent. The first quench medium can include a first portion of the bottoms stream that can include a first portion of the tar. In certain embodiments, the process can also include hydroprocessing a second portion of the bottoms stream that can include a second portion of the tar to produce a hydroprocessed product. A hydroprocessed bottoms stream can be obtained from the hydroprocessed product. In certain embodiments, the process can also include contacting at least a portion of the hydroprocessed bottoms stream and the first portion of the bottoms stream to produce the first quench medium.

Processes and systems for quenching pyrolysis effluents

A multi-stage process for upgrading tars is provided. A predominantly hydrotreating stage can be applied before a cracking stage, which can be a hydrocracking or a thermal cracking stage. Alternatively, a predominantly cracking stage, which can be a hydrocracking or a thermal cracking stage, can be applied before a hydrotreating stage. Apparatus suitable for performing the method is also provided.

Multistage upgrading hydrocarbon pyrolysis tar

The invention relates to catalytic aromatization, e.g., for the conversion of non-aromatic hydrocarbon to higher-value aromatic hydrocarbon, to catalysts useful for such aromatization, to methods for making such catalysts, and to systems and apparatus for carrying out aromatization in the presence of the catalyst.

Catalytic aromatization

A process is described for upgrading pyrolysis tar, such as steam cracker tar, by hydroprocessing in the presence of a utility fluid. The hydroprocessing conditions comprise a pressure &#x3e;8 MPa and a weight hourly space velocity of combined pyrolysis tar and utility fluid &#x3e;0.3 hrand are selected so that the hydrogen consumption rate is in the range of 270 to 445 standard cubic meters/cubic meter (S m/m) of pyrolysis tar.

Upgrading hydrocarbon pyrolysis tar

Aspects of the invention provide a process for upgrading a hydrocarbon feed. The process includes providing a hydrocarbon feed and a utility fluid. Then selectively extracting from the feed at least a portion of particulates to produce a raffinate and an extract. Third hydroprocessing at least a portion of the raffinate.

Hydrocarbon upgrading

The invention relates to a process for upgrading pyrolysis tar in the presence of a utility fluid. The utility fluid contains 1-ring and/or 2-ring aromatics and has a final boiling point &#x2266;430&#xb0; C. The invention also relates to the upgraded pyrolysis tar, and to the use of the upgraded pyrolysis tar, e.g., for fuel oil blending.

Pyrolysis tar upgrading using recycled product

The invention relates to a process for upgrading pyrolysis tar, such as steam cracker tar, in the presence of a utility fluid. The utility fluid contains 2-ring and/or 3-ring aromatics and has solubility blending number (S)&#x2267;120. The invention also relates to the upgraded pyrolysis tar and to the use of the upgraded pyrolysis tar, for example, for fuel oil blending.

Upgrading hydrocarbon pyrolysis products

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Houston, TX, United States of America

Reyyan Koc-Karabocek