A process to catalytically transform natural gas liquid (NGL) into higher molecular weight hydrocarbons includes providing an NGL stream, catalytically dehydrogenating at least a portion of the NGL stream components to their corresponding alkene derivatives, catalytically oligomerizing at least a portion of the alkenes to higher molecular weight hydrocarbons and recovering the higher molecular weight hydrocarbons. The NGL stream can be extracted from a gas stream such as a gas stream coming from shale formations. The higher molecular weight hydrocarbons can be hydrocarbons that are liquid at ambient temperature and ambient pressure.

Methods and systems for the conversion of hydrocarbon feedstocks, in particular, naphtha feedstocks, into a hydrocarbon product stream containing a high yield of high-octane gasoline and chemicals products. In particular, the conversion takes place over a series of functionally distinctive catalyst beds, at least one of which includes a modified zeolitic catalyst comprising a zeolite, a transition metal, and optionally a binder. Systems provided include a hydrocarbon feed stream, which may be full-range naphtha, a hydrocarbon product stream, and a plurality of functionally distinctive catalyst beds arranged in series, wherein at least one of the catalyst beds comprises a modified zeolitic catalyst. A hydrocarbon feed stream may be conveyed through the plurality of functionally distinctive catalyst beds, producing an intermediate hydrocarbon stream between each, under conditions effective to convert the hydrocarbon feed stream to a hydrocarbon product stream comprising high-octane gasoline, xylenes, benzene, and/or toluene.

Methods and systems for the conversion of hydrocarbon feedstocks, in particular, naphtha feedstocks, into a hydrocarbon product stream containing a high yield of high-octane gasoline and chemicals products. In particular, the conversion takes place over a series of functionally distinctive catalyst beds, at least one of which includes a modified zeolitic catalyst comprising a zeolite, a transition metal, and optionally a binder. Systems provided include a hydrocarbon feed stream, which may be full-range naphtha, a hydrocarbon product stream, and a plurality of functionally distinctive catalyst beds arranged in series, wherein at least one of the catalyst beds comprises a modified zeolitic catalyst. A hydrocarbon feed stream may be conveyed through the plurality of functionally distinctive catalyst beds, producing an intermediate hydrocarbon stream between each, under conditions effective to convert the hydrocarbon feed stream to a hydrocarbon product stream comprising high-octane gasoline, xylenes, benzene, and/or toluene.

This disclosure provides processes for reforming hydrocarbons by using a series of adiabatic reactors and catalysts, in which the catalyst(s) in at least one front or upstream catalyst bed or reactor includes a higher fluoride concentration, higher chloride concentration, or both than the respective halide concentrations in the catalysts in one or more downstream catalyst beds or reactors, which has been unexpectedly discovered to extend the useful life and/or the selectivity of the catalyst system.

A reforming process is described. The reforming process includes introducing a hydrocarbon stream comprising hydrocarbons having 5 to 12 carbon atoms into a reforming zone containing reforming catalyst, the reforming zone comprising at least two reformers, each reformer having a set of reforming operating conditions, to produce a reformate effluent, wherein the last reformer contains less catalyst than the next to the last reformer.

A reforming process is described. The reforming process includes introducing a hydrocarbon stream comprising hydrocarbons having 5 to 12 carbon atoms into a reforming zone containing reforming catalyst, the reforming zone comprising at least two reformers, each reformer having a set of reforming operating conditions, to produce a reformate effluent, wherein the last reformer contains less catalyst than the next to the last reformer.

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.

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.

A method of producing hydrocarbon mixtures rich in aromatics from naphtha feedstock (100 or 100a) comprising the steps of feeding naphtha feedstock (100 or 100a) and liquified petroleum gases (101a and 101b) into reactor effluent/feed heat exchanger (200 or 300) to yield mixture (102 or 102a), channeling the mixture (102 or 102a) into at least one and at most three reactors via integrated heaters to produce hydrocarbon mixtures rich in aromatics, channeling effluent into reactor effluent/feed heat exchanger (200 or 300) before it is transferred to cooling tank (203), cooling the effluent in cooling tank (203), introducing cooled effluent (107) into first stage separator (204) to obtain light gases, transferring remaining liquid into second stage separator (206) and separating remaining liquid to yield LPG (101b) and directing effluent into stabilizer (207) to separate off gas, LPG (101c) and reformate, wherein the reformate is the hydrocarbon mixtures rich in aromatics.

A method of producing hydrocarbon mixtures rich in aromatics from naphtha feedstock (100 or 100a) comprising the steps of feeding naphtha feedstock (100 or 100a) and liquified petroleum gases (101a and 101b) into reactor effluent/feed heat exchanger (200 or 300) to yield mixture (102 or 102a), channeling the mixture (102 or 102a) into at least one and at most three reactors via integrated heaters to produce hydrocarbon mixtures rich in aromatics, channeling effluent into reactor effluent/feed heat exchanger (200 or 300) before it is transferred to cooling tank (203), cooling the effluent in cooling tank (203), introducing cooled effluent (107) into first stage separator (204) to obtain light gases, transferring remaining liquid into second stage separator (206) and separating remaining liquid to yield LPG (101b) and directing effluent into stabilizer (207) to separate off gas, LPG (101c) and reformate, wherein the reformate is the hydrocarbon mixtures rich in aromatics.