Saudi Arabian Oil Company

Aramco Services Company

Noor A Sulais

Sohel K Shaikh

Munir D Khokhar

Mohammed R Alalouni

Faisal H Alshafei

Brian S Hanna

Raed H Abudawoud

Zhonglin Zhang

Miao Sun

Noor Al-Mana

Eman Z Albaher

Hattan T Janbi

A method for producing aromatic compounds from pyrolysis oil comprises: upgrading the pyrolysis oil to pyrolysis gasoline in a multi-stage reactor comprising a slurry-phase reactor and a fixed-bed reactor, wherein the slurry-phase reactor comprises a mixed metal oxide catalyst, and the fixed-bed reactor comprises a mesoporous zeolite-supported metal catalyst; aromatizing the pyrolysis gasoline in an aromatization unit; hydrodealkylating and transalkylating a product from the aromatization unit in a hydrodealkylation-transalkylation unit, thereby producing an aromatic stream; and processing the aromatic stream in an aromatics recovery complex to produce the aromatic compounds comprising benzene, toluene, and xylenes (BTX).

Integration process for pyrolysis oil upgrading with maximized BTX yield

Embodiments of methods of synthesizing a metathesis catalyst system, which include impregnating tungsten oxide on silica support in the presence of a precursor to produce a base catalyst; calcining the base catalyst; dispersing a solid metal-based co-catalyst onto the surface of the base catalyst to produce a doped catalyst; and calcining the doped catalyst to produce a metathesis catalyst system. Further embodiments of processes for the production of propylene, which include contacting a hydrocarbon feedstock comprising a mixture of 1-butene and 2-butene with embodiments of the metathesis catalyst system to produce, via metathesis conversion, a product stream comprising propylene.

Catalyst systems that include metal co-catalysts for the production of propylene

Embodiments of methods of synthesizing a metathesis catalyst system, which include impregnating tungsten oxide on silica support in the presence of a precursor to produce a base catalyst; calcining the base catalyst; impregnating a metal oxide co-catalyst comprising a metal oxide onto the surface of the base catalyst to produce a doped catalyst; and calcining the doped catalyst to produce a metathesis catalyst system. Further embodiments of processes for the production of propylene, which include contacting a hydrocarbon feedstock comprising a mixture of 1-butene and 2-butene with embodiments of the metathesis catalyst system to produce, via metathesis conversion, a product stream comprising propylene.

Catalyst systems that include metal oxide co-catalysts for the production of propylene

Embodiments of processes and multiple-stage catalyst systems for producing propylene comprising introducing a hydrocarbon stream comprising 2-butene to an isomerization catalyst zone to isomerize the 2-butene to 1-butene, passing the 2-butene and 1-butene to a metathesis catalyst zone to cross-metathesize the 2-butene and 1-butene into a metathesis product stream comprising propylene and C-Colefins, and cracking the metathesis product stream in a catalyst cracking zone to produce propylene. The isomerization catalyst zone comprises a silica-alumina catalyst with a ratio by weight of alumina to silica from 1:99 to 20:80. The metathesis catalyst comprises a mesoporous silica catalyst support impregnated with metal oxide. The catalyst cracking zone comprises a mordenite framework inverted (MFI) structured silica catalyst.

Multiple-stage catalyst system for self-metathesis with controlled isomerization and cracking

Catalysts systems that include metal co-catalysts for the production of propylene

Processes and multiple-stage catalyst systems are disclosed for producing propylene from butene by at least partially metathesizing butene in a metathesizing reaction zone having a metathesis catalyst to form a metathesis reaction product and at least partially cracking the metathesis reaction product in a cracking reaction zone having a cracking catalyst to form a cracking reaction product that includes propylene. The metathesis catalyst may be a mesoporous silica-alumina catalyst support impregnated with metal oxide having a mesoporous silica-alumina catalyst support comprising from 5 weight percent to 50 weight percent alumina. The cracking catalyst may be a MFI structured silica-containing catalyst. The cracking reaction zone may be downstream of the metathesis reaction zone.

Dual catalyst processes and systems for propylene production

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Dhahran, Saudi Arabia

Noor A Sulais