216results about "Refining to change hydrocarbon structural skeleton" patented technology

A process for improving yield of kerosene and / or diesel from a renewable feedstock involves hydrotreating a renewable feedstock and hydroisomerizing the hydrotreated liquid. The isomerized effluent is separated to produce an offgas stream, at least one fuel stream having a desired boiling point range, and a heavy fraction having a boiling point greater than the desired boiling point range. The heavy fraction is passed to a hydrocracking zone to produce a hydrocracked effluent. The hydro-cracked effluent is passed to the hydroisomerization zone.

A process for the production of sustainable aviation fuel (SAF) with low carbon intensity. The jet fuel is produced from the reaction of hydrogen from the electrolysis of water with captured carbon dioxide. The hydrogen and carbon dioxide are reacted to product a stream comprising carbon monoxide. Hydrogen and carbon monoxide are reacted to produce n-alkanes. Alkanes are hydroisomerized to produce sustainable aviation fuel with low carbon intensity.

Methods and systems for converting a renewable fuel intermediate composition to finished transportation fuel are provided herein. In some examples, a renewable fuel intermediate composition is flowed over a first catalyst in a first reaction zone to generate a saturated, hydrodeoxygenated product. A liquid portion of the renewable fuel intermediate composition may be characterized as having more than about 70 wt % of the oxygen being within ketone groups. The saturated, hydrodeoxygenated product may be flowed over a second fixed-bed catalyst in a second reaction zone to generate a product including the finished transportation fuel.

A method of recycling waste lubricant. The method includes providing a waste lubricant-derived oil fraction, pretreating the waste lubricant-derived oil fraction, and hydrocracking the pretreated waste lubricant-derived oil fraction. The method has economic advantages in that waste lubricant can be recycled into fuel oil and high-grade lube base oil with a relatively high yield compared to a lube base oil manufacturing process utilizing only unconverted oil as a feedstock.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. The waste plastic can be liquified before being introduced to downstream processing. In some aspects, recycled content aromatics (r-aromatics) can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content terephthalic acid (r-TPA) and / or recycled content polyethylene terephthalate (r-PET).

The present invention relates to a method and a system for producing aviation fuel. This method comprises the steps of: preparing FT synthetic oil as a feed; introducing the feed into a first distillation column for separating the feed into a plurality of fractions including an aviation fuel boiling point range fraction and an aviation fuel boiling point range exceeding fraction; introducing the aviation fuel boiling point range exceeding fraction into an HCK reactor to produce an HCK reaction product; recycling at least a portion of the HCK reaction product into the first distillation column; introducing the aviation fuel boiling point range fraction into an HDI reactor to produce an HDI reaction product; and recovering aviation fuel from the HDI reaction product.

Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and / or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hydrocracking unit. A liquid petroleum gas C3 olefin / paraffin mixture is recovered from the hydrocracking unit. The C3 paraffins and C3 olefins are separated into different fractions with the C3 olefin fraction passed to a propylene polymerization reactor, and the C3 paraffin fraction passed optionally to a dehydrogenation unit to produce additional propylene. A heavy fraction can also be recovered from the hydrocracking unit and passed to an isomerization dewaxing unit to prepare base oil.

A process for producing a sustainable aviation fuel component is described, wherein the process comprises two integrated sub-processes A and B. The sub-processes A comprises providing a renewable feedstock comprising triglycerides, hydrolyzing the triglycerides into free fatty acids which are subjected to a hydrocracking to produce a first hydrocarbon intermediate A. In the sub-processes B of the integrated process, any light hydrocarbons, oxygenates and glycerol released in the sub-processes A are refined into further hydrocarbons, hydrocarbon intermediate B, which together with hydrocarbon intermediate A are isomerized and a sustainable aviation fuel or sustainable aviation fuel component is provided.

To provide a reforming catalyst and a process for reforming methane and / or other hydrocarbons to produce a synthesis gas product comprising H2 and CO, with further downstream conversion to liquid hydrocarbons.SOLUTION: A process for producing C4+ hydrocarbons comprises the steps of: (a) bringing a gaseous mixture comprising methane and an oxidant into contact with a reforming catalyst in a reforming stage to produce a synthesis gas product; (b) converting H2 and CO in the synthesis gas product into hydrocarbons containing the C4+ hydrocarbons, which are supplied as Fischer-Tropsch (FT) products to a Fischer-Tropsch (FT) reactor; and (c) supplying the FT product containing the C4+ hydrocarbons to a finishing reactor to convert at least about 75% of the wax fraction's normal C20+ hydrocarbons into C4-C19 hydrocarbons.SELECTED DRAWING: Figure 3

Provided herein are renewable hydrocarbon compositions comprising n-paraffins and isoparaffins wherein the total amount of any C8-C16 isoparaffins is from 50 to 94 wt% of the total weight of the hydrocarbon composition, the hydrocarbon composition has a kinematic viscosity of from 3.7 to 8 mm2 / s at-20 DEG C, and the weighted average carbon number of the hydrocarbons in the hydrocarbon composition is from 12.1 to 14.2.

Processes and systems for the production of heavy isoparaffinic hydrocarbons include feeding hydrogen and a mixed isoolefin stream, including C8-C12 olefins, isoolefins, and oligomers, and C8-C12+ hydrogenated hydrocarbons to a trickle-bed reactor system. The hydrogen and mixed isoolefin are reacted over a hydrogenation catalyst, producing a liquid effluent comprising hydrogenated hydrocarbons and unreacted olefins and oligomers, and a vapor effluent comprising hydrogenated hydrocarbons, hydrogen and unreacted olefins and oligomers. The liquid effluent is fed to a first heat exchanger, producing a cooled liquid effluent stream, which is combined with the vapor effluent, producing a mixed phase effluent. The mixed phase effluent is cooled in a second heat exchanger, producing a partially condensed effluent, which is fed to a drum, producing a vent stream, a hydrogenated product stream having greater than 95 wt % C8-C12 saturated hydrocarbons, and a hydrogenated recycle stream. The hydrogenated product stream may be provided to downstream blending systems.

A hydrocarbon isomerization system for an iC4 feed stream that provides for removal of C3s from an isomerization reactor feed stream by the addition of a depropanizer column to remove C3s from the reactor effluent stream after it has passed through a stabilizer column. This configuration prevents a buildup of C3s in the system and provides significant savings by reducing the size of the chloride treaters that are used to remove chlorides from off gas, increasing chlorides recovered to the hydrocarbon feed stream for use in combination with the isomerization catalyst. Significant utility savings are provided as well as a reduction in the amount of perchloroethane (PERC) and adsorbent that are required.

The present invention relates to a method for treating a feedstock comprising pyrolysis oil from plastics and / or tires and / or solid recovered fuels containing halogenated compounds, said method comprising: a) a hydrotreating step to obtain a partially hydrotreated effluent having a reduced content of halogenated compounds; b) a separation step in which the hydrotreated effluent from step a) and an aqueous solution are fed to obtain a gaseous effluent, an aqueous effluent and a partially hydrotreated hydrocarbon effluent; and c) a step of fluidized bed catalytic cracking or hydrotreating of a petroleum feedstock and / or a feedstock resulting from biomass conversion, in which the partially hydrotreated hydrocarbon effluent is introduced as a co-feed without a prior separate hydrotreatment step at higher temperature and / or pressure, and the mixture of petroleum and / or biomass feedstock and the partially hydrotreated hydrocarbon effluent has a halogenated compound content of 10 ppm or less by weight.

Disclosed is a catalyst for hydrogenating aromatic compounds obtainable by a process comprising at least the following steps: a) contacting an alumina support with at least one organic additive; b) contacting the alumina support with at least one nickel metal salt, the melting temperature of which is between 20°C and 150°C; c) heating the solid mixture obtained at the end of steps a) and b) with stirring; d) drying the catalyst precursor at the end of step c); and e) performing a heat treatment step on the dried catalyst precursor obtained at the end of step d).

Systems and methods are provided for reducing hydrogen consumption during deoxygenation of bio-derived (or at least partially bio-derived) feedstocks. The reduced hydrogen consumption is achieved by performing the deoxygenation in the presence of a bulk multimetallic catalyst and / or in the presence of a base metal dewaxing catalyst having reduced metal stack heights. Additionally, due in part to being able to reduce or minimize hydrogen consumption, the heat release during deoxygenation can also be reduced, thus allowing a smaller catalyst volume to perform deoxygenation.

An improved process for making a bright stock base oil from a base oil feedstream comprising an atmospheric resid feedstock, and, optionally, a base oil feedstock, via hydroprocessing. The process generally involves subjecting a base oil feedstream comprising the atmospheric resid to hydrocracking and dewaxing steps, and optionally to hydrofinishing, to produce base oil product(s) including a bright stock grade base oil product having a viscosity of at least about 22 cSt at 100° C. The invention is useful to make heavy grade base oil products such as bright stock, as well as Group II and / or Group III / III+ base oils.

A process for producing at least one liquid transportation fuel component is provided. In this process, a paraffinic hydrocarbon is supplied and subjected to hydroisomerization treatment to obtain a hydroisomerization effluent. A recycle stream is separated from this hydroisomerization effluent and subjected to hydrocracking to obtain a recycle effluent. The hydroisomerization effluent and the recycle effluent are supplied to fractional distillation, and at least one liquid transportation fuel component is recovered from this fractional distillation.

A feed stream of cyclic paraffins may be separated to obtain an overhead of methylcyclopentane or cyclohexane and a bottoms stream cyclohexane or methylcyclohexane. The overhead stream may be subjected to separation of normal paraffins from non-normal paraffins with the former being isomerized or the entire overhead stream may be isomerized. In a further embodiment, the bottoms stream may be subjected to steam cracking. In an additional embodiment, the feed stream of cyclic paraffins may be formerly subjected to aromatic saturation.

The present disclosure provides a mineral oil-based lubricant base oil with improved low temperature performance, the lubricant base oil having a kinematic viscosity of 9.0 cSt (40°C) or less, a kinematic viscosity of 2.5 cSt (100°C) or less, and a pour point of -50°C or less.

Provided is a continuous process for converting waste plastics into polyethylene for recycling. In one embodiment, the process includes selecting waste plastics containing polyethylene and / or polypropylene and passing the waste plastic through a pyrolysis reactor to thermally decompose at least a portion of the polyolefin waste and produce a pyrolyzed effluent. The pyrolyzed effluent is separated into off-gas, a naphtha / diesel fraction, a heavy fraction, and char. The naphtha / diesel fraction is passed to a refinery crude unit distillation column, from which a straight-run naphtha (C5-C8) fraction or a propane / butane (C3-C4) fraction is recovered. The straight-run naphtha fraction (C5-C8) or a propane / butane (C3-C4) fraction is passed to a steam cracker for ethylene production. The heavy fraction from the pyrolysis unit can also be passed to an isomerization dewaxing unit to produce base oil.

An integrated facility for producing renewable diesel fuel or sustainable aviation fuel, or both, from carbon dioxide, including carbon dioxide, which is a by-product in the reaction of hydrogenated esters and fatty acids (HEFAs) with hydrogen to produce renewable fuel. HEFAs are hydrogenated to produce liquid fuel products, which may include water, CO and water, or CO2. It is integrated with an e-fuel process, which produces low-carbon hydrogen as required at various stages of the integrated process. Renewable or low-carbon electricity is used to convert water into hydrogen and oxygen within the electrolyzer. Carbon dioxide reacts with at least a portion of the hydrogen to produce a flow containing carbon monoxide, the carbon dioxide conversion rate of this flow being 50% to 100% per pass, preferably 60% to 100%, and more preferably 70% to 100%.

Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and / or polypropylene and preparing a blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hydrocracking unit. A liquid petroleum gas C3-C4 olefin / paraffin mixture, and optionally naphtha, is recovered from the hydrocracking unit and passed to a steam cracker to make ethylene A heavy fraction can also be recovered from the hydrocracking unit and passed to an isomerization dewaxing unit to prepare base oil.

Provided is a process for processing circular feedstocks, renewable feedstocks, or a mix of both renewable and circular feedstocks in an ebullated bed (EB) reactor. At least a portion of the renewable and / or circular feedstocks is added to the EB reactor above its catalyst grid, while a sufficient amount of the feedstocks is injected at the bottom of the EB reactor to create the fluidized bed.

A method for hydrotreating a biorenewable feedstock is disclosed. The process includes hydrotreating the bioregenerable feed stream in a hydrotreating reactor to hydrodeoxygenate the bioregenerable feed stream to provide a hydrotreated stream. A hydrocracking feed stream taken from the hydrotreated stream is hydrocracked in a hydrocracking reactor to provide a hydrocracked stream. A hydroisomerization feed stream taken from the hydrotreated stream is hydroisomerized in a hydroisomerization reactor to provide a hydroisomerized stream. The hydroisomerized stream is separated to provide a jet fuel stream and a diesel stream. The diesel stream is separated into a first recycled diesel stream and a second recycled diesel stream. The first recycle diesel stream is passed to a hydrocracking reactor and the second recycle diesel stream is passed to a hydroisomerization reactor.

Process for converting an oxygenate feed stream, the process comprising the steps of: conducting the oxygenate feed stream to an oxygenate-to-gasoline reactor, suitably a methanol-to-gasoline reactor (MTG reactor) under the presence of a catalyst active for converting oxygenates in the oxygenate feed stream into a raw gasoline stream com-prising C3-C4 paraffins and C5+ hydrocarbons; and adding an aromatic stream to the MTG reactor.

A method for producing an α-olefin oligomer composition includes: an oligomerization step A1 of oligomerizing an α-olefin with a metallocene catalyst to obtain an oligomer (a); a distillation separation step A2 of distilling and separating the oligomer (a) to obtain a high molecular weight fraction (a1) and a low molecular weight fraction (a2); an oligomerization step B 1 of oligomerizing an α-olefin oligomer containing the low molecular weight fraction (a2) with an acid catalyst to obtain an oligomer (b); and a mixing step C of mixing a portion of the oligomer (a) or a hydrogenated product thereof and a portion or a whole of the oligomer (b), an isomer thereof, or a hydrogenated isomer thereof.

To provide a process for modification of methane and / or other hydrocarbons to form a synthetic gas product material including H2 and CO and accompanying a downstream conversion to a liquid hydrocarbon.SOLUTION: Provided herein is a process for formation of a C4+ hydrocarbon, wherein the process includes: (a) a step for formation of a synthetic gas product material by bringing a gaseous mixture including methane and an oxidizer into contact with a modification catalyst in a modification stage, (b) a step of converting H2 and CO in the synthetic gas product material to a hydrocarbon including the C4+ hydrocarbon given as a Fischer-Tropsch (FT) product material of a Fischer-Tropsch (FT) reactor, and (c) a step of converting at least about 75% of a normal C20+ hydrocarbon in a wax fraction to a C4-C19 hydrocarbon by supplying the FT product material including the C4+ hydrocarbon to a finishing reactor.SELECTED DRAWING: Figure 3

The present invention relates to a process for the selective dehydrocyclization and aromatization of linear or branched hydrocarbons in the SAF range to aromatics in the SAF range.

Embodiments of systems and methods to produce aviation fuel are disclosed. An example of a method to produce aviation fuel includes fractionating a renewable diesel feedstock in a fractionator to produce a C8− fraction, a C8-18 fraction, and a C18+ fraction. Additionally, the method includes providing the C8-18 fraction to an isomerization reactor to produce an aviation fuel product. The method includes supplying at least a portion of the C18+ fraction to a hydrocracking reactor to produce a hydrocracked product. The method further includes recycling at least a portion of the hydrocracked product to the fractionator for fractionating along with the renewable diesel feedstock.