Exxonmobil Research and Engineering Company

Exxonmobil Chemical Patents Inc.

Emmanuel Ulysse

David T Ferrughelli

Hong Cheng

Patrick Brant

Donna Jean Crowther

Glen Barry Brons

Timothy Andrew Barckholtz

Mohsen Shahmirzadi Yeganeh

Man Kit Ng

Clarence E Chase

Edward A Lemon

Geoffrey Marshall Keiser

ManKit Ng

John Robert Hagadorn

Teng Xu

Geoff Keiser

Kevin Mallory

Edward A Lemon, Jr

Hong Chen

David Thomas Ferrughelli

A process for upgrading pyrolysis tar to higher value products. More particularly, this invention relates to the upgrading of steam cracker tar using relatively small amounts of a transition metal sulfide-containing particulate catalyst dispersed throughout the tar chargestock and in the presence of hydrogen, at relatively mild hydroconversion conditions.

Pyrolysis tar upgrading process

A multipurpose chemical additives (MPC) is disclosed to mitigate fouling in hydrocarbon refinery processes, such as in a heat exchanger. A method for reducing fouling of a hydrocarbon is also disclosed that includes (i) providing a crude hydrocarbon for a refining process; and (ii) adding an additive to the crude hydrocarbon.

Functionalized polymers containing polyamine succinimide for antifouling in hydrocarbon refining processes

Disclosed is a method of functionalizing a vinyl terminated polyolefin, the method comprising combining a vinyl terminated polyolefin and a &#x3b1;,&#x3b2;-unsaturated carbonyl compound at a temperature of at least 150&#xb0; C. and a pressure of at least 14 psi, forming a functionalized polyolefin. The functionalized polyolefin comprises a compound or mixture of compounds represented the formula: wherein each Ris, independently, selected from hydrogen and Cto Cor Calkyls; n is an integer from 2 to 800; and each X is, independently, a functional group derived from the &#x3b1;,&#x3b2;-unsaturated carbonyl compound.

Process of polyolefin functionalization

A method for treating an emulsion of a hydrocarbon is disclosed. The method includes providing an emulsion of a crude hydrocarbon, and adding an additive to the emulsion to obtain a treated hydrocarbon.

Functionalized polymers containing polyamine succinimide for demulsification in hydrocarbon refining processes

Methods and systems for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process and adding an antifouling agent containing a polymer base unit and a polyamine group to the crude hydrocarbon are provided. The antifouling agent can be obtained by converting a vinyl terminated polymer, such as polypropylene or poly(ethylene-co-propylene), to a terminal acyl containing functional group, followed by reacting the terminal acyl containing functional group with a polyamine compound.

Polyalkylene carboxylic acid polyamine additives for fouling mitigation in hydrocarbon refining processes

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Maplewood, NJ, United States of America

Emmanuel Ulysse