22results about "Refining to change hydrocarbon structural skeleton" patented technology

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.

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.

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.

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.

METHOD FOR MANUFACTURING HYDROCARBON FLUIDS WITH AT LEAST PART-INTEGRATED DIHYDROGEN PRODUCTION The invention relates to a method for manufacturing hydrocarbon fluids, in particular paraffins, from a hydrocarbon feedstock of natural origin containing at least 50% by mass of glycerides, said method comprising: a) a step of hydrolysis of the hydrocarbon feedstock of natural origin, b) a step of recovery of the products of step a) separating a first effluent containing free fatty acids and a second effluent containing alcohols and water, c) a step of hydrotreating said first effluent to transform the free fatty acids into paraffins, e) a step of reforming in aqueous phase the second effluent recovered in step b) during which at least a part of the alcohols it contains is converted into dihydrogen, carbon dioxide and carbon monoxide, f) a step of separation of the dihydrogen formed during step e),The separated dihydrogen is sent to step c) hydrotreatment, and optionally to a step d) hydroisomerization and / or hydrocracking of the hydrotreated effluent. Abbreviated figure: Figure 1.

A supported bimetallic catalyst includes (a) an inorganic oxide carrier, and (b) a copper-nickel metal component, wherein a content of the nickel metal component is from about 10 wt. % to about 50 wt. %, measured as elemental metal, and a molar ratio of copper to nickel is from about 0.1:1 to about 2:1. Processes for hydrogenation and dehydrogenation using the supported bimetallic catalyst are also disclosed.

An eFuels plant and process for producing synthetic hydrocarbons using renewable energy are disclosed. The eFuels plant comprises a hydrocarbon synthesis (HS) system and a renewable feed and carbon / energy recovery (RFCER) system. The RFCER comprises a heat integration system between an electrolysis unit and a thermal desalination unit. The thermal desalination unit is configured to receive seawater and a first amount of thermal energy and to produce a desalinated water stream and a brine effluent stream. The electrolysis unit is configured to receive a demineralized water stream and an amount of electrical energy to produce a hydrogen stream, an oxygen stream, and a second amount of thermal energy, wherein the second amount of thermal energy is absorbed by a second low temperature heat transfer fluid stream to produce a second high temperature heat transfer fluid stream. A fluidly segregated piping system containing a heat transfer fluid is configured to withdraw heat from the electrolysis unit and deliver heat to the thermal desalination unit. A control system manages flows of the heat transfer fluid between the electrolysis unit and the thermal desalination unit, the addition of heat to the flow to the thermal desalination unit, and / or the removal of heat from the flow to the electrolysis unit.

The present invention describes an improved method for synthesizing high value chemical products from low carbon synthesis gas. In one aspect, a method for producing chemicals is provided. The process includes: feeding a feedstock comprising hydrogen and carbon monoxide to a liquid fuel production reactor, the liquid fuel production reactor comprising a catalyst, thereby producing a product, the product comprising a liquid phase and a solid phase, the liquid phase being a C5-C 23 and an oxygenated hydrocarbon, said solid phase being C 24 -C 45 The liquid phase comprises 51 to 99% by volume of the product, and contains aliphatic hydrocarbons.

The process upgrades a low value heavy aromatics stream into a high value BTX precursor stream. It treats the C9 to C 12 Naphthalene molecules in the heavy aromatics stream of the aromatics are converted to BTX precursors by partially hydrogenating one of the aromatic rings prior to the transalkylation reactor and subsequently ring opening the saturated ring to form a single aromatic ring. The remaining C 11 Monaromatics to achieve an overall increased BTX yield.

The invention is directed to the use of a composition as a solvent for adhesives and / or sealants, the composition comprising a paraffinic fluid and at least one alcohol, the composition having a content of biocarbon of at least 90%wt based on the total weight of the carbon atoms of the composition, the paraffinic fluid comprising, based on the total weight of the paraffinic fluid, at least 90% by weight of paraffinic compounds and having a weight ratio isoparaffins / n-paraffins of at least 2. The invention also relates to a composition as such.

Provided is a continuous process for converting waste plastics into recycling for the production of chemical substances. This process includes a step of selecting waste plastics containing polyethylene and / or polypropylene, and a step of preparing a stable blend of the biofeedstock and the selected plastics. The amount of plastic in the blend constitutes 20 wt% or less of the blend. The blend is passed through a conversion unit. Useful chemical substances including C3 and C4 olefins and aromatics are recovered.

Provided are: a hydrocarbon composition; a production method therefor; a method for producing a lower-olefin composition; a method for producing a polyolefin-based polymer; and a method for assessing a hydrocarbon composition. The hydrocarbon composition includes a product of decomposition of a chemically recycled feedstock, and has an oxygen-containing compound content as determined by elemental analysis of 900 mass ppm or less in terms of oxygen atom amount. The chemically recycled feedstock comprises a polyolefin-based polymer and an oxygen-containing compound.

A composition and method for making a synthetic paraffinic composition with at least 35 wt % C17 and higher carbon number paraffins having an iso / normal ratio between 100 and 500 is described.

A method and apparatus for producing biofuels from biorenewable feedstocks are disclosed. The method includes hydrotreating a biorenewable feedstream in a hydrotreating reactor to hydrodeoxygenate the feedstream and provide a hydrotreating effluent stream. The hydrotreating effluent stream is separated into a thermally separated vapor stream and a thermally separated liquid stream in a thermally separated separator. A hydroisomerization feedstream is taken from the thermally separated liquid stream and hydroisomerized in a hydroisomerization reactor to provide a hydroisomerized stream. All or part of the return stream taken from the thermally separated vapor stream is recycled to the hydroisomerization reactor. The disclosed method and apparatus minimize the carryover of n-C16 to the biofuel and maximize the hydroisomerization of n-alkanes in the hydrotreating effluent stream to produce biofuels that meet biofuel specifications without affecting or impairing the biofuel yield.

An eFuels plant and process for producing synthetic hydrocarbons using renewable energy are disclosed. The eFuels plant comprises a hydrocarbon synthesis (HS) system and a renewable feed and carbon / energy recovery (RFCER) system. The RFCER comprises an oxygen-fired heater to provide operational flexibility and efficiency. The oxygen fired heater comprises: a) one or more burners, suitable for accepting feeds comprising a hydrocarbon stream, an oxygen stream, and a diluent gas stream and producing combustion products comprising heat, carbon dioxide, and water; b) a radiant section, comprising a firebox and a radiant coil within the firebox, wherein the firebox is suitable for accepting the combustion products, and the radiant coil absorbs a first portion of the heat to produce first cooled combustion products; c) a convection section, comprising a convection coil and a convection inter-tube space defined by the outer surface of the convection coil, wherein the convection inter-tube space is suitable for accepting the first cooled combustion products to produce second cooled combustion products; and d) a carbon dioxide recovery section, comprising a condensing coil and a condensing inter- tube space defined by the outer surface of the condensing coil, wherein the condensing inter- tube space is suitable for accepting the second cooled combustion products to produce third cooled products comprising a non-condensables stream, comprising carbon dioxide, and a water stream.

A process for hydroprocessing a sustainable feedstock is disclosed. The process comprises contacting a feed stream with a selective saturation catalyst to saturate olefins to provide a selectively saturated stream. The selective saturation catalyst may comprise a metal on an alumina support. The selectively saturated stream is hydrodeoxygenated over a hydrodeoxygenation catalyst to produce a hydrodeoxygenated stream. The hydrodeoxygenation catalyst has a smaller mean pore diameter than the selective saturation catalyst.

An eFuels plant and process for producing synthetic hydrocarbons using renewable energy are disclosed. The eFuels plant comprises a hydrocarbon synthesis (HS) system and a renewable feed and carbon / energy recovery (RFCER) system. A process for treating wastewater in the eFuels production system comprises adding wastewater streams from the HS system to an anaerobic buffer tank to produce an inventory of untreated wastewater. The relative amounts of the HS system wastewater streams are controlled such that the inventory of untreated wastewater has a target chemical oxygen demand (COD) and / or a target biochemical oxygen demand (BOD). A first amount of the inventory of untreated water is added to an anaerobic biodigester to produce a first treated water stream and a biogas stream, and a second amount of the inventory of untreated water and the first treated water stream are added to an aerobic buffer tank to produce an inventory of aerobic feed water. The relative amounts of the first treated water and the untreated water added to the aerobic buffer tank such that the inventory of aerobic feed water are controlled such that the inventory of aerobic feed water has a target COD and / or a target BOD. A portion of the inventory of aerobic feed and an amount of air to an aerobic biodigester to produce a second treated water stream and a first sludge.

A method is disclosed of producing hydrocarbons from a recycled or renewable organic material wherein the recycled or renewable organic material contains hydroxyaromatic hydrocarbon compounds. Exemplary methods include (a) providing recycled or renewable organic material; (b) optionally purifying the recycled or renewable organic material; (c) hydrotreating the recycled or renewable organic material in a presence of a hydrotreating catalyst, thereby forming a hydrocarbon stream and a phenol-containing effluent; (d) separating phenols from the phenol-containing effluent of step (c), thereby forming a phenol stream and a purified water stream; and (e) recycling the phenol stream obtained in step (d) to step (c) to increase the yield of hydrocarbons obtained from step (c); to obtain hydrocarbons containing less than 1 wt % oxygen.

A method for producing renewable hydrocarbons from biomass is provided.

A supported bimetallic catalyst includes (a) an inorganic oxide carrier, and (b) a copper-nickel metal component, wherein a content of the nickel metal component is from about 10 wt. % to about 50 wt. %, measured as elemental metal, and a molar ratio of copper to nickel is from about 0.1:1 to about 2:1. Processes for hydrogenation and dehydrogenation using the supported bimetallic catalyst are also disclosed.

The invention relates to a method for producing hydrocarbon fluids, in particular paraffins, from a hydrocarbon feedstock of natural origin containing at least 50% by weight of glycerides, the method comprising: a) a step of hydrolyzing the hydrocarbon feedstock of natural origin; b) a step of recovering the products of step a), the recovery step separating a first effluent containing free fatty acids and a second effluent containing alcohols and water; c) a step of hydrotreating said first effluent to convert the free fatty acids into paraffins; e) a step of aqueous-phase reforming of the second effluent recovered in step b), during which at least some of the alcohols contained in the second effluent are converted into dihydrogen, carbon dioxide and carbon monoxide; f) a step of separating the dihydrogen formed during step e), the dihydrogen thus separated being sent to hydrotreatment step c), and optionally to a step d) of hydroisomerizing and / or hydrocracking the hydrotreated effluent.

A process for producing renewable products from bio-supply materials, wherein the bio-supply materials are brought into contact with a hydrogenation catalyst under hydrogenation conditions, and the bio-supply materials contain at least about 10% by weight of C 20+ It contains one or more bio-components having a certain content, and the hydrogenation conversion catalyst includes a hydrogenation isomerization catalyst.