Chevron Phillips Chemical Company LP

Michael S Webster-Gardiner

James L Hillier

Brooke L Small

Steven M Bischof

A process to produce 1-octene and 1-decene includes (a) separating a composition containing an oligomer product—which contains 15 to 80 mol % Colefins, 20 to 80 mol % Colefins, and 5 to 20 mol % C+ olefins—into a first oligomer composition containing Calkanes and at least 85 mol % Colefins (e.g., 1-hexene), a second oligomer composition containing at least 20 mol % Colefins (e.g., 1-octene), and a heavies stream containing C+ olefins, then (b) contacting a metathesis catalyst system with the first oligomer composition to form a first composition comprising Clinear internal olefins, (c) contacting the Clinear internal olefins with a catalytic isomerization catalyst system in the presence of photochemical irradiation to form a second composition comprising 1-decene, and (d) purifying the second composition to isolate a third composition comprising at least 90 mol % 1-decene. Processes to produce 1-hexene and 1-decene also are described, as well as related manufacturing systems and processes to produce higher carbon number normal alpha olefins from lower carbon number normal alpha olefins.

Selective 1-hexene/1-octene production with 1-decene

Processes for producing ethylene-based polymers and oligomers from ethanol include the steps of contacting the ethanol and a catalyst to produce a reaction mixture containing ethylene, wherein a first portion of the ethanol is derived from a biomass and a second portion of the ethanol is derived from a plastic, a mixed solid waste stream, or a combination thereof, separating at least a portion of the ethylene from the reaction mixture, and contacting ethylene with a suitable polymerization or oligomerization catalyst composition to produce the ethylene polymer or ethylene oligomers. A related process for producing ethylene-based polymers and oligomers uses a first ethylene feed derived from ethanol and a second ethylene feed derived from a plastic, a mixed solid waste stream, or a combination thereof.

Production of polyethylene and ethylene oligomers from ethanol and the use of biomass and waste streams as feedstocks to produce the ethanol

Processes and systems that utilize methane pyrolysis for carbon capture from a petrochemical stream that contains hydrogen and methane. The petrochemical stream can be the tail gas of a hydrocarbon cracking system, or any other petrochemical stream containing hydrogen and methane. The petrochemical stream can be separated into a hydrogen product stream and a methane product stream, before sending the methane product stream to a methane pyrolysis unit. The methane pyrolysis unit converts methane to solid carbon and hydrogen.

Use of methane pyrolysis to decarbonize a hydrocarbon cracking system

An alpha olefin synthesis process includes (i) subjecting a first normal alpha olefin to hydroformylation in the presence of carbon monoxide and hydrogen to form a first linear aldehyde, (ii) subjecting the first linear aldehyde to decarbonylative olefination to form a linear internal olefin, (iii) subjecting the linear internal olefin to isomerization-hydroformylation in the presence of carbon monoxide and hydrogen to form a second linear aldehyde, and (iv) subjecting the second linear aldehyde to hydrogenation to form a linear alcohol followed by dehydration to form a second normal alpha olefin, or subjecting the second linear aldehyde to combined hydrogenation-dehydration in a single step to form a second normal alpha olefin. Using this process, for example, ethylene can be converted to 1-hexene, and 1-butene can be converted to 1-decene.

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Humble, TX, United States of America

Michael S Webster-Gardiner