Exxonmobil Chemical Patents Inc.

Donald J Norris

Michael C Clark

Benjamin S Umansky

Garland B Brignac

Michael A Radzicki

Rodney S Smith

Katherine Sullivan Phillion

Glenn J Moloney

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

Described is an apparatus for, and a method of, recovering linear butenes from a mixed feed comprising providing a first mixed feed comprising linear butenes and isobutene; contacting the first mixed feed with an oligomerization catalyst such as an MWW family zeolite in a first oligomerization reactor to produce a second mixed feed comprising the linear butenes, Colefins and higher oligomers, and a reduced amount of isobutene relative to the first mixed feed; and separating the second mixed feed to produce a first effluent of first purified linear butenes, and a second effluent of Colefins and higher oligomers. The oligomerization reactor may be a converted isobutene-to-methyl-t-butylether reactor.

Method of isolating linear butenes from a mixed hydrocarbon feed

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London, Canada

Donald J Norris