24results about "Refining by selective hydrogenation" patented technology

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.

The invention relates to a method for preparing a catalyst containing nickel and copper and a porous alumina support, comprising the following steps of : a) bringing the alumina support into contact with a solution containing a nickel precursor and a first organic compound having at least one carboxylic acid function; b) drying at a temperature below 250°C, then calcining at a temperature of between 250°C and 550°C; c) bringing the calcined catalyst precursor obtained at the end of step b) into contact with a solution containing a nickel precursor, a copper precursor and a second organic compound having at least one carboxylic acid function; d) drying at a temperature below 250°C.

A process for producing light olefins from a hydrocarbon feed comprising arsenic at an initial quantity. The process can comprise one of more of: introducing the hydrocarbon feed to a desalter to produce a desalted hydrocarbon feed having a reduced quantity of arsenic: preheating the desalted hydrocarbon feed; introducing the preheated hydrocarbon feed to a flash separation vessel to produce an overhead fraction and a bottoms fraction; introducing the overhead fraction and steam to a radiant section of the steam cracker operated under steam cracking conditions to produce a. steam cracked effluent; and separating the steam cracked effluent to obtain a steam cracker tar, a steam cracker gas oil, a naphtha, cut, and a process gas stream; and recovering an olefin product stream from the process gas stream. Arsenic quantities in various streams in the process can be calculated and controlled.

To provide a method which efficiently produces a chemical product and also efficiently provides a carbide from used tires by improvement of each step in a set of processes. A method for producing a chemical product and a carbide, the method including a pyrolysis step of obtaining a first gas fraction, pyrolysis oil, and a residue fraction through pyrolysis of a crushed product of used tires, a carbide recovery step of recovering carbide from the residue fraction, a low-temperature hydrogenation step of subjecting raw oil containing at least one portion of the pyrolysis oil to low-temperature hydrotreatment at 180°C or higher and 350°C or lower, to obtain low-temperature hydrogenated oil, a hydrogenolysis step of subjecting raw oil containing at least one portion of the low-temperature hydrogenated oil to hydrogenolysis treatment at a higher temperature than that in the low-temperature hydrotreatment, to obtain a second gas fraction, a light fraction having a boiling point of 350°C or lower, and a heavy fraction having a boiling point of higher than 350°C, and a steam cracking step of obtaining a chemical product, and a raw material for carbide production, containing a heavy distillate fraction having a 10% distillation temperature of 190°C or higher, by steam cracking of steam cracking raw oil containing at least one portion of the light fraction, in which a pyrolysis temperature of the pyrolysis is 350°C or higher and 750°C or lower.

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.

The present invention relates to an improved kerosene base. The present invention also relates to any composition comprising the kerosene base, to a process for its preparation and to its use as fuel in the field of aviation. The present invention also relates to a process for producing the kerosene base from an olefinic feedstock comprising olefinic compounds comprising at least 20% by weight of olefins having a number of carbon atoms that is greater than or equal to 4 (C4+), based on the total weight of the feedstock: a) a step of oligomerising the olefinic feedstock and obtaining an effluent, b) a step of mixing a first olefinic stream comprising at least some of the effluent resulting from step a) or a first paraffinic stream obtained after hydrogenation of at least some of the effluent resulting from step a), with a hydrocarbon stream comprising hydrocarbon compounds having 8 carbon atoms.

To provide a method for efficiently producing a chemical product from a waste material including used tires, in which each step in a set of processes is improved and thus long-term running is made possible. A method for producing a chemical product, the method including a pyrolysis step of obtaining a first gas fraction, pyrolysis oil, and a residue fraction through pyrolysis of a crushed product of a waste material including used tires, a low-temperature hydrogenation step of subjecting raw oil containing at least one portion of the pyrolysis oil to low-temperature hydrotreatment at 180°C or higher and 350°C or lower, to obtain low-temperature hydrogenated oil, a separation step of separating raw oil for atmospheric distillation, containing at least one portion of the low-temperature hydrogenated oil and crude oil, to a naphtha distillate fraction and any other distillate fraction, by atmospheric distillation, and a steam cracking step of obtaining a chemical product by steam cracking of steam cracking raw oil at least one portion of the naphtha distillate fraction, in which an amount of the pyrolysis oil based on a total amount of the first gas fraction, the pyrolysis oil and the residue fraction is 40% by mass or higher in the pyrolysis step.

[Problem] To provide a method for efficiently producing a chemical product from a waste material including used tires, in which each step in a set of processes is improved and thus long-term running is made possible. [Solution] A method for producing a chemical product, the method including a pyrolysis step of obtaining a first gas fraction, pyrolysis oil, and a residue fraction through pyrolysis of a crushed product of a waste material including used tires, a low-temperature hydrogenation step of subjecting raw oil containing at least one portion of the pyrolysis oil to low-temperature hydrotreatment at 180°C or higher and 350°C or lower, to obtain low-temperature hydrogenated oil, a hydrogenolysis step of subjecting raw oil containing at least one portion of the low-temperature hydrogenated oil to hydrogenolysis treatment at a higher temperature than that in the low-temperature hydrotreatment, to obtain a second gas fraction, a light fraction having a boiling point of 350°C or lower, and a heavy fraction having a boiling point of higher than 350°C, and a steam cracking step of subjecting steam cracking raw oil containing at least one portion of the light fraction to steam cracking treatment, to obtain a chemical product, in which an amount of the pyrolysis oil based on a total amount of the first gas fraction, the pyrolysis oil and the residue fraction is 40% by mass or higher in the pyrolysis step.

The present invention relates to a process for preparing middle distillates from an olefinic feedstock, comprising: a) a step of heterogeneous oligomerisation fed with the olefinic feedstock, a first recycled substance, a second recycled substance and a third recycled substance, and carried out in the presence of at least one heterogeneous oligomerisation catalyst, to produce a reaction effluent comprising dimers, trimers and oligomers; b) a step of fractionating the reaction effluent into: - a first light fraction comprising at least some of the olefins containing between 3 and 4 carbon atoms (C3-C4 fraction) of the olefinic feedstock not converted in step a); - a second light fraction comprising at least some of the olefins containing between 5 and 6 carbon atoms (C5-C6 fraction); - an intermediate fraction comprising at least some of the olefins containing between 7 and 9 carbon atoms (C7-C9 fraction); and - a heavy fraction comprising the oligomers; c) a recycling step, comprising preparing a first recycled substance comprising at least some of the light fraction, preparing a second recycled substance, comprising at least some of the second light fraction; preparing a third recycled substance comprising at least some of the intermediate fraction; and transferring the first, second and third recycled substances to step a); d) a step of hydrogenating at least some of the heavy fraction.

To provide a method for efficiently producing a chemical product from a waste material including used tires, in which each step in a set of processes is improved and thus long-term running is made possible. A method for producing a chemical product, the method including a pyrolysis step of obtaining a first gas fraction, pyrolysis oil, and a residue fraction through pyrolysis of a crushed product of a waste material including used tires, a low-temperature hydrogenation step of subjecting raw oil containing at least one portion of the pyrolysis oil to low-temperature hydrotreatment at 180°C or higher and 350°C or lower, to obtain low-temperature hydrogenated oil, a high-temperature hydrogenation step of subjecting raw oil containing at least one portion of the low-temperature hydrogenated oil to hydrotreatment at a higher temperature than that in the low-temperature hydrotreatment, to obtain a second gas fraction and high-temperature hydrogenated oil, a separation step of separating raw oil for atmospheric distillation, containing at least one portion of the high-temperature hydrogenated oil and crude oil, to a naphtha distillate fraction and any other distillate fraction, by atmospheric distillation, and a steam cracking step of obtaining a chemical product by steam cracking treatment of steam cracking raw oil containing at least one portion of the naphtha distillate fraction and / or such any other distillate fraction, in which an amount of the pyrolysis oil based on a total amount of the first gas fraction, the pyrolysis oil and the residue fraction is 40% by mass or higher in the pyrolysis step.

This invention provides a method for producing a highly fluid fuel oil, primarily composed of saturated hydrocarbons, using vegetable oils and fats as raw materials, under relatively mild conditions. [Solution] A method for producing fuel oil from vegetable oils, comprising the steps of (a) a decarboxylation step in which carbon dioxide is removed from the ester groups of vegetable oils using a decarboxylation catalyst to produce hydrocarbons, (b) an isomerization step in which the obtained hydrocarbons are isomerized using an isomerization catalyst, and (c) a hydrogenation step in which hydrogen is added to the obtained isomerized hydrocarbons using a hydrogenation catalyst to produce fuel oil consisting of saturated hydrocarbons, wherein the decarboxylation step, the isomerization step and the hydrogenation step are performed in this order, and the decarboxylation step, the isomerization step and the hydrogenation step are performed under a pressure of 1.0 MPa or less.

The application discloses a ternary composite oxide carrier, a carbon four alkyne selective hydrogenation non-noble metal catalyst and a preparation method and application thereof. The ternary composite oxide carrier is a ternary composite oxide carrier containing Al2O3, CuO and TiO2, wherein the CuO is distributed in the internal framework structure of Al2O3-TiO2; the content of the CuO accounts for 0.1-5% of the total weight of the carrier. The carbon four alkyne selective hydrogenation non-noble metal catalyst prepared based on the composite oxide carrier has the advantages of high low-temperature activity, high selectivity and high stability, compared with a noble metal selective hydrogenation alkyne removal catalyst, the catalyst can greatly save the production cost, and the catalyst has good anti-poisoning ability to impurities and raw material adaptability.

The present invention relates to the petrochemical industry and discloses a method for selective hydrogenation of butadiene extraction tail gas and a selective hydrogenation device therefor. The method for selective hydrogenation of butadiene extraction tail gas includes the following steps: (1) supplying alkyne-containing tail gas from a butadiene extraction unit to a raw material tank, and optionally supplying impurities entrained in the alkyne-containing tail gas to the raw material tank; (2) pressurizing the C4 raw material in the raw material tank to a pressure required for the reaction by a supply pump, then combining with a circulating C4 stream from a first-stage reactor outlet buffer tank and supplying it to a first-stage mixer, where it is mixed with hydrogen gas and supplied to the first-stage reactor to carry out the first-stage hydrogenation reaction; and the first-stage reaction stream obtained by the reaction is supplied to the first-stage reactor outlet buffer tank; the hydrogen gas required for the reaction in the first-stage reactor is supplied through a first supply form or a second supply form: in the first supply form, all of the hydrogen gas required for the reaction is supplied through the first-stage reactor outlet buffer tank. (3) there is no gas phase discharge from the first-stage reactor outlet buffer tank, and the liquid phase product is split into at least two streams, the first stream being returned to the first-stage reactor as a recycled C4 stream, and the second stream being used as a feed to the stabilization tower or subjected to further hydrotreating before being fed to the stabilization tower; and (4) the C4 hydrogenation product is recovered after separation in the stabilization tower.

The invention relates to a method for preparing a catalyst comprising an active nickel phase and an alumina support, the catalyst comprising between 1 and 50% by weight of elemental nickel relative to the total weight of the catalyst, the nickel being distributed both in a crust at the periphery of the support and in the core of the support, the method comprising the following steps: a) impregnating the support with a volume V1 of a hexanoic acid or a heptanoic acid solution between 0.2 and 0.8 times the total pore volume TPV of the support to obtain an impregnated support; b) impregnating the impregnated support obtained at the end of step a) with a solution comprising a precursor of the active nickel phase to obtain a catalyst precursor; and c) drying the catalyst precursor obtained at the end of step b) at a temperature lower than 250°C.

A system for steam cracking a whole crude that may include a volatilization device, a control system, a separator, and a steam pyrolysis reactor. The volatilization device may be configured to separate a vapor phase from a liquid phase. The control system may be configured to maintain a flow rate of the whole crude and steam, at an initial relative velocity of less than 30 m / s. The separator may be fluidly connected to the volatilization device and configured to separate the liquid phase into a second vapor phase, and a second liquid phase. The steam pyrolysis reactor may include a convection section and a steam pyrolysis heater section, the convection section configured to heat the vapor phase, the liquid phase, and the second vapor phase, and the steam pyrolysis heater section configured to steam crack hydrocarbons in the vapor phase thereby generating a cracked hydrocarbon product.

The present invention relates to a more efficient, sustainable system and process, wherein an off-gas comprising unsaturated hydrocarbons from a synthesis stage is recycled to the syngas stage through an off-gas conversion stage comprising hydrogenation of unsaturated hydrocarbons in said off-gas. The exotherm across the adiabatic hydrogenation unit is controlled efficiently by using dilution gas.

The present invention relates to a method for processing plastic pyrolysis oil, the method comprising: (a) selectively hydrogenating the feedstock in the presence of at least hydrogen and at least one selective hydrogenation catalyst; (b) hydrotreating the hydrotreated effluent in the presence of at least hydrogen and at least one hydrotreating catalyst to obtain a hydrotreated effluent; (c) hydrocracking the hydrotreated effluent in the presence of at least hydrogen and at least one hydrocracking catalyst to obtain a hydrocracked effluent; and (d) separating the hydrocracked effluent in the presence of an aqueous stream at a temperature between 50 and 370°C to obtain at least one gaseous effluent, a liquid aqueous effluent, and a liquid hydrocarbon effluent.

The present invention relates to a kerosene base having particularly satisfactory cold properties and overall carbon yield. The present invention also relates to any composition comprising said kerosene base, the process for preparing same, and the use thereof as a fuel in the field of aviation.

The present invention relates to a process for producing aviation fuel from a predominantly ethylene feedstock, the process comprising the following steps: a) a first step of oligomerising the feedstock and obtaining at least one first effluent comprising olefins having a number of carbon atoms that is greater than or equal to 4 (C4+), the first oligomerisation step being carried out in the presence of an oligomerisation catalyst; b) a second step of oligomerising at least some of the first effluent resulting from step a) and obtaining a second effluent comprising olefins having a number of carbon atoms that is greater than or equal to 9 (C9+), the second oligomerisation step being carried out in the presence of a heterogeneous catalyst, c) a step of hydrogenating at least some of the second effluent resulting from step b) to obtain a third effluent comprising at least 90% by weight of paraffins relative to the total weight of the hydrocarbon compounds of the third effluent.

This invention provides a method for producing biodiesel fuel, mainly composed of saturated hydrocarbons, using vegetable oils or animal fats as raw materials, under relatively mild conditions. [Solution] A method for producing biodiesel fuel from vegetable oil or animal fat, comprising: a decarboxylation step of removing carbon dioxide from ester groups of vegetable oil or animal fat using a decarboxylation catalyst to produce hydrocarbons; and a hydrogenation step of hydrogenating the obtained hydrocarbons using a hydrogenation catalyst to produce diesel fuel consisting of saturated hydrocarbons, wherein the decarboxylation step and the hydrogenation step are performed in this order, and the decarboxylation step and the hydrogenation step are performed under a pressure of 0.2 MPa or less.

The application provides a kind of life solid waste carbon powder catalyst, preparation method and application;The method comprises the following steps: catalyst is placed with waste plastic oil in magnetic stirring kettle and sealed, multiple replacement air generates hydrogen atmosphere, then waste plastic oil hydrogenation saturation reaction is carried out under certain temperature, hydrogen pressure to prepare high-quality fuel oil;Wherein the source of the waste plastic oil is the liquid hydrocarbon oil obtained by thermal cracking or catalytic cracking of polyethylene;The catalyst is a kind of life solid waste carbon powder;The high-quality fuel oil is the gasoline and diesel oil distillation hydrocarbon with saturated alkane and a small amount of aromatic hydrocarbon as main component.The catalyst provided by the application can efficiently and stably catalyze the waste plastic oil hydrogenation saturation reaction, the catalyst raw material is easy to obtain, the cost is low, and has good industrial application prospect.

A method for processing pyrolytic gasoline containing dienes and sulfur compounds includes: a) selectively hydrogenating the dienes of the feedstock in the presence of hydrogen and a catalyst to produce a diene-removed effluent; b) selectively increasing the molecular weight of light sulfur compounds in the presence of hydrogen and a catalyst, wherein step b) is performed directly after step a) or step c), between two steps c), or during step e); c) separating the effluent from step a) or step b) to obtain a gas stream and a liquid stream, wherein step c) is performed before and / or after step b); d) recycling a portion of the liquid stream from step c) to step a); and e) fractionation downstream of steps a) and c) allowing the separation of light gasoline fractions with a sulfur content of less than 10 ppm by weight.

The present invention relates to a method for treating plastic pyrolysis oil, the method comprising: a) treating the plastic pyrolysis oil in the presence of at least hydrogen and at least one selective hydrogenation catalyst at a temperature of 100 to 150°C, a hydrogen partial pressure of 1.0 to 10.0 absolute MPa, and 1.0 to 10.0 h -1 a) selective hydrogenation of the feedstock to obtain a hydrogen effluent at an hourly space velocity of 0.1 to 10.0 h; b) selective hydrogenation of the feedstock to obtain a hydrogen effluent at a temperature of 250 to 370 °C, a hydrogen partial pressure of 1.0 to 10.0 MPa absolute and a time of 0.1 to 10.0 h in the presence of at least hydrogen and at least one hydrotreating catalyst. -1 to obtain a hydrotreated effluent; c) separating the hydrotreated effluent in the presence of an aqueous stream at a temperature of from 50 to 370°C to obtain at least one gaseous effluent, at least one aqueous liquid effluent, and at least one liquid hydrocarbon effluent; e) recycling at least one fraction of the products obtained.

This disclosure provides a method for treating the effluent from hydrothermal liquefaction of a feedstock into a final liquid hydrocarbon fuel by removing impurities such as silicon, chlorides, metals, heteroatoms, etc., in a pretreatment zone. The feedstock contains plastic oil, pyrolysis oil, synthetic oil, or hydrocarbon distillates from a plastic recycling process using supercritical water as the reaction medium, and the effluent can be fed into a feed tank or a continuous mixing settler vessel. The feed is introduced into a hydrogen atmosphere reactor. The reactor effluent is fed to a separator for extracting a product mixture by adding supplemental or recycled hydrogen to the separator. The overhead product mixture is washed with water to remove acidic water or salts. The separator effluent is fed to a distillation section for extracting a liquid fuel product stream. A portion of the hydrotreated product stream can be recycled back to the feed tank or the continuous mixing settler vessel, which reduces the concentration of dienes.