Exxonmobil Chemical Patents Inc.

Exxonmobil Engineering & Technology Company

Rodney S Smith

Alok Srivastava

Kevin Wayne Lawson

Michael A Radzicki

Selma SheungNam Lawrence

Mark A Nierode

Roshni Jindal

Keng-Fai Kuan

Donald J Norris

Julie D Hietpas

Boon Hwa Sow

James P Chapman

The present disclosure relates to processes, apparatuses, and systems for the removal of sulfur compounds from a heavy hydrocarbon feed as part of steam cracking processes to produce light olefins. In at least one embodiment, the process includes introducing a hydrocarbon feed having a first sulfur content to a steam cracker to produce a steam cracker effluent having a second sulfur content less than the first sulfur content. The process includes introducing the steam cracker effluent to a fractionation system to produce a light hydrocarbon product stream having a third sulfur content less than the second sulfur content.

Hydrocarbon pyrolysis of feeds containing sulfur

Processes are provided for removing contaminants from a refinery gas. Such process can include recovering a process gas comprising ethylene and propylene from a steam cracker effluent recovered from a stream cracker in a steam cracker facility. A refinery gas can be recovered from a refinery facility. The process gas can be compressed in a plurality of compressor stages. A pressure of the refinery gas can be determined. A compressor stage in the plurality of compressor stages can be selected for introducing the refinery gas using the determined pressure of the refinery gas. The refinery gas can be introduced into the selected compressor stage to produce a combined gas that can include the process gas and the refinery gas. At least a portion of one or more impurities can be removed from the combined gas in the steam cracker facility to produce an upgraded combined gas.

Processes and systems for upgrading a hydrocarbon

The invention generally relate to processes, systems, and methods for the pyrolysis of hydrocarbon feeds containing one or more forms of mercury, e.g., the steam cracking of heavy oil, such as crude oil. Effluent from the pyrolysis is processed to remove various forms of mercury produced during the pyrolysis and/or carried over from the hydrocarbon feed.

Hydrocarbon pyrolysis of feeds containing mercury

Processes and systems for pyrolysing a hydrocarbon feed for a predetermined period of time, e.g., by steam cracking. The process can include determining a first amount of silicon material present in the hydrocarbon feed that is to be steam cracked to produce a steam cracker effluent. The process can also include determining a second amount of silicon material that will be present in a steam cracker naphtha that is to be separated from the steam cracker effluent.

Hydrocarbon pyrolysis of feeds containing silicon

Processes and systems for Cmonoolefin conversion. In some examples, the process can include reacting a first mixture that includes Cmonoolefins and a first oxygenate to produce a first effluent that includes a first ether and <1 wt. % of any first di-Colefin. A first product that includes the first ether and a first byproduct that includes at least a portion of any first di-Colefin and unreacted Cmonoolefins can be separated from the first effluent. A second olefin mixture, at least a portion of the first byproduct, and a second oxygenate can be combined to produce a second mixture. The second mixture can be reacted to produce a second effluent that includes a second ether and a second di-Colefin. The reaction of the second mixture can produce a greater amount, on a mole basis, of the second di-Colefin than the second ether.

Processes and systems for C3+ monoolefin conversion

In a process for making a copolymer, a first product stream comprising a semi-crystalline polymer and a chain terminating agent is produced in a first reactor system. The first product is provided to a second reactor system wherein a low crystallinity polymer is produced in the presence of the semi-crystalline polymer. At least a portion of the chain terminating agent is removed from the second reactor system by an in-situ process.

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Edinburgh, United Kingdom

Rodney S Smith