A process for treatment of PFO from a steam cracking zone includes selectively hydrogenating PFO or a portion thereof for conversion of polyaromatics compounds contained in the PFO into aromatic compounds with one benzene ring to produce a selectively hydrogenated stream. The selectively hydrogenated stream is reacted in the absence of added hydrogen for selective ring opening and dealkylation to produce a dealkylated BTX+ stream. In addition, a naphtha reformer is integrated, so that the dealkylated BTX+ stream and a reformate stream are separated into BTX compounds. Optionally the PFO is separated into a first stream containing C9+ aromatics compounds with one benzene ring, and a second stream containing C10+ aromatic compounds, whereby the first stream containing C9+ aromatics compounds with one benzene ring is passed to the ring opening step, and the feed to the selective hydrogenation step comprises all or a portion of the second stream containing C10+ aromatic compounds.

The present disclosure relates generally processes and systems for converting a C2-C7 light alkanes feed to liquid transportation fuels or value-added chemicals. The feed is contacted with an aromatization catalyst at a temperature and pressure that selectively converts C4 and larger alkanes to an intermediate product comprising monocyclic aromatics and olefins. Following separation of the aromatics and C5+ hydrocarbons from the intermediate product, unconverted C2-C3 alkanes are thermally-cracked to produce olefins that are subsequently oligomerized to produce a liquid transportation fuel blend stock or value-added chemicals.

The present disclosure relates generally processes and systems for converting a C2-C7 light alkanes feed to liquid transportation fuels or value-added chemicals. The feed is contacted with an aromatization catalyst at a temperature and pressure that selectively converts C4 and larger alkanes to an intermediate product comprising monocyclic aromatics and olefins. Following separation of the aromatics and C5+ hydrocarbons from the intermediate product, unconverted C2-C3 alkanes are thermally-cracked to produce olefins that are subsequently oligomerized to produce a liquid transportation fuel blend stock or value-added chemicals.

A method for processing a gasoline fraction includes the steps of: a) reacting the gasoline fraction in an aromatization unit, and separating the resulting reaction product to obtain a C.sub.4.sup. component, a C.sub.5 component, a C.sub.6-C.sub.7 component, a C.sub.8 component and a C.sub.9.sup.+ component; b) reacting the resulting C.sub.6-C.sub.7 component and the C.sub.9.sup.+ component in a cracking and aromatics conversion unit, and separating the resulting reaction product to obtain a C.sub.4.sup. component, a C.sub.5 component, a C.sub.6-C.sub.7 component, a C.sub.8 component and a C.sub.9.sup.+ component; and c) recycling at least a part of at least one of the C.sub.6-C.sub.7 component and the C.sub.9.sup.+ component from step b) to the cracking and aromatics conversion unit of step b) for further reaction. The method can convert the gasoline fraction into C.sub.8 aromatic hydrocarbon(s) and produce light olefins and a high-quality light gasoline as byproducts.

A method for processing a gasoline fraction includes the steps of: a) reacting the gasoline fraction in an aromatization unit, and separating the resulting reaction product to obtain a C.sub.4.sup. component, a C.sub.5 component, a C.sub.6-C.sub.7 component, a C.sub.8 component and a C.sub.9.sup.+ component; b) reacting the resulting C.sub.6-C.sub.7 component and the C.sub.9.sup.+ component in a cracking and aromatics conversion unit, and separating the resulting reaction product to obtain a C.sub.4.sup. component, a C.sub.5 component, a C.sub.6-C.sub.7 component, a C.sub.8 component and a C.sub.9.sup.+ component; and c) recycling at least a part of at least one of the C.sub.6-C.sub.7 component and the C.sub.9.sup.+ component from step b) to the cracking and aromatics conversion unit of step b) for further reaction. The method can convert the gasoline fraction into C.sub.8 aromatic hydrocarbon(s) and produce light olefins and a high-quality light gasoline as byproducts.

Disclosed herein is a system and method capable of producing benzene from a product stream.

Disclosed herein is a system and method capable of producing benzene from a product stream.

Disclosed herein is a system and method capable of producing butadiene from a product stream.

Disclosed herein is a system and method capable of producing butadiene from a product stream.

Increased paraxylene production through the use of a split feed reforming process, wherein hydrotreated naphtha is split into light, middle and heavy fractions. Each fraction is reformed separately to generate streams containing aromatic compounds. These streams can further be processed and can undergo dealkylation, transalkylation, disproportionation, isomerization, and separation steps to maximize paraxylene production. In addition, some streams are recycled or recombined in order to maximize paraxylene production.