Method for producing diesel fuel

FIELD: chemistry.

SUBSTANCE: invention discloses a method for producing diesel fuel from a hydrocarbon stream, comprising: hydrotreating the main hydrocarbon stream and a co-feed hydrocarbon feedstock containing diesel fuel in the presence of a hydrogen stream and a pre-purification catalyst to produce a pre-purified effluent stream; hydrocracking a pre-purified effluent stream in the presence of a hydrocracking catalyst and hydrogen to produce an effluent hydrocracking stream; fractionating, at least, a portion of the hydrocracking effluent to produce a diesel fuel stream; and hydrotreating the diesel fuel stream in the presence of the hydrogen stream for hydrotreating and a hydrotreating catalyst to produce an effluent stream.

EFFECT: producing diesel fuel with low sulfur and ammonia content.

10 cl, 2 dwg

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining low-viscous white oils, in which vacuum gasoil is subjected to hydrocracking with the volume ratio of hydrogen to a raw material of 800-1000 nm3/m3, volume rate of the raw material supply of 0.4-0.6 h-1, temperature of 340-360°C and partial pressure of hydrogen of 20-30 MPa on Ni/Mo catalyst, applied on a silica-alumina carrier, with the content of active components counted per the catalyst burnt at a temperature of 600°C, wt %: MoO3 - 35.0, NiO - 15.0, SiO2 - 7.0 or on Ni/W catalyst, applied on the silica-alumina carrier, with the content of active components counter per the catalyst burnt at a temperature of 600°C, wt %: WO3 - 25.0, NiO - 10.0, SiO2 - 5.0. The target fraction with the boiling out temperature from 280 to 340°C, the content of aromatic hydrocarbons above the required norm and the temperature of solidification not higher than minus 10°C is separated from the obtained stream, boiling out in the range of temperatures from 280 to 400°C. Hydration of the target fraction is carried out by its contact with hydrogen with the volume ratio of hydrogen to the raw material of 800-950 nm3/m3 on the catalyst at a temperature of 240-320°C, partial pressure of hydrogen of 6.0-8.0 MPa, volume rate of the raw material supply 0.25-0.5 h-1.

EFFECT: reduction of the technological process of obtaining white oils for the medical purpose.

4 cl, 1 tbl, 5 ex

FIELD: oil and gas industry.

SUBSTANCE: invention is related to treatment and conversion in stationary layer of heavy crude oil. The invention is referred to pretreatment and hydroconversion of hydrocarbon stock in the form of heavy crude oil containing at least 0.5 wt % of asphaltenes and more than 10 weight ppm of metals (nickel and/or vanadium) in order to receive pretreated synthetic crude oil, wherein the above raw stock is delivered to hydrodemetallisation section comprised of at least 2 interchangeable reaction zones, then at least a part of demetallised effluent is subjected to hydrocracking in the hydrocracking section and wherein a special-purpose catalytic system is used in hydrodemetallisation and hydrodesulphurisation sections.

EFFECT: oil refining that includes reduced quantity of metals, sulphur, nitrogen and other impurities, reduction of the operating cycle to at least 12 months.

12 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to method of diesel fuel production. Particularly, it pertains to compression of makeup hydrogen flow in compressor to bleed hydrogen flow from said compressed makeup hydrogen flow. Hydrocarbons flow is subjected to hydro cracking in the presence of hydrogen flow and catalyst to get outlet hydro cracking products flow to be separated in liquid flow and vapour flow to be compressed to get hydrogen compressed flow. Liquid outlet flow is fractionated to obtain diesel fuel flow. Hydrogen flow is bled for hydraulic cleaning from said compressed hydrogen flow for hydraulic cleaning of diesel fuel flow in the presence of hydrogen flow and catalyst to get outlet hydro cracking products flow. Invention covers also the diesel fuel production plant.

EFFECT: perfected process.

10 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a base composition of lubricating oil, which includes a first step, where the a first oil is obtained by bringing into contact starting oil materials containing normal paraffin, having 20 or more carbon atoms, with a first catalyst in the presence of molecular hydrogen; and a second step, where a second oil is obtained by bringing into contact the first oil with a second catalyst in the presence of molecular hydrogen. The first catalyst comprises a first support in which desorption of NH3 at 300-800°C is 80-90% with respect to total desorption of NH3 when estimating the temperature dependence of desorption of ammonia; a first metal which is deposited on the first support and consists of at least one metal selected from metals of group 6 of the periodic table of elements; and a second metal which is deposited on the first support and consists of at least one metal selected from metals of groups 8-10 of the periodic table of elements. Overall, content C1 (wt %) of the first metal in the first catalyst with respect to oxide and content C2 (wt %) of the second metal in the first catalyst with respect to oxide, specifically C1+C2 is 22-36 wt %; and the ratio of content of the first metal D1 (mol) in the first catalyst to content of the second metal D2 (mol) in the first catalyst, specifically D1/D2 is 1.07-7.78.

EFFECT: high output of the lubricating oil of high quality.

14 cl, 5 tbl, 21 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to a hydrocracking method of hydrocarbon raw material containing 200 ppm - wt 2% of asphaltenes and/or more than 10 ppm wt of metals. The method involves hydrodemetallisation at least in two reaction zones of periodic action, which contain a hydrodemetallisation catalyst and possibly hydrodenitration; then, hydraulic cleaning to reduce content of organic nitrogen with further hydrocracking in a fixed bed and by a distillation stage.

EFFECT: invention provides a possibility of direct treatment of raw material types containing the amounts considerably exceeding known specifications; those raw material types can be treated individually or in a mixture, thus maintaining durability of a traditional cycle.

18 cl, 4 ex, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method for hydrocracking a hydrocarbon stream involving the following operations: providing hydrocarbon starting material (12); feeding the hydrocarbon starting material (12) into a hydrofining zone (14) to obtain an output stream (30) of the hydrofining zone; feeding the output stream (30) of the hydrofining zone into a separation zone (16) in order to separate one or more streams of hydrocarbons with a lower boiling point (34, 58, 62, 66) from a stream of liquid hydrocarbons with a higher boiling point (68); inlet of at least a portion of the stream of liquid hydrocarbons with a higher boiling point as material (68) for hydrotreatment without using a considerable amount of hydrocarbons coming from the hydrotreatment zone with an essentially continuous liquid phase; adding hydrogen (70) to the material (68) for hydrotreatment in an amount which is sufficient to maintain essentially liquid-phase conditions; feeding the material (68), mixed with hydrogen, for hydrotreatment into the hydrocracking zone (24) with an essentially continuous liquid phase; and carrying out a reaction for hydrocracking the material (68) for hydrotreatment in the hydrocracking zone (24) with an essentially continuous liquid phase with a hyrocracking catalyst in hydrocracking conditions to obtain an output stream (72) of the hydrocracking zone having a lower boiling point compared to the stream (68) of liquid hydrocarbons with a higher boiling point. The invention also relates to another method for hydrocracking a hydrocarbon stream.

EFFECT: improved characteristics of products, higher conversion.

16 cl, 5 dwg, 4 tbl, 1 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to method (10) involving the creation of hydrocarbon raw material flow (14) with opacity temperature, flow loss point and cold filter plugging point (CFPP); extraction at least of some hydrocarbon raw material flow as raw material (14) for hydrotreatment; raw material (14) for hydrotreatment does not contain hydrocarbons from hydroisomerisation zone with continuous liquid phase; mixing of raw material (14) for hydrotreatment with hydrogen (16); at that, hydrogen is contained in the form available for constant flow rate in the hydroisomerisation zone with continuous liquid phase; direction of raw material (14) mixed with hydrogen for hydrotreatment to hydroisomerisation zone (12) with continuous liquid phase; and implementation of reaction of raw material (14) for hydrotreatment in hydroisomerisation zone (12) with continuous liquid phase using at least one hydroisomerisation catalyst under hydroisomerisation conditions under which outlet flow (18) having at least one of the following characteristics is formed: opacity temperature, flow loss point and CFPP value below the corresponding characteristics of hydrocarbon raw material flow (14).

EFFECT: improvement of characteristics of cold flow of hydrocarbon flows.

10 cl, 1 dwg, 3 tbl, 1 ex

FIELD: oil and gas industry.

SUBSTANCE: method used for obtaining middle distillates based on the mixture of paraffin hydrocarbons obtained by Fischer-Tropsch synthesis involves the following subsequent stages: a) separation at least of light gas fraction C4-, which has final boiling temperature of less than 20°C, from the flow leaving the Fischer-Tropsch synthesis plant in order to obtain only heavy liquid fraction C5+, which has initial boiling temperature of 20 to 40°C; b) hydrogenation of non-saturated compounds of olefinic type at least of some part of heavy fraction C5+ in presence of hydrogen and hydrogenation catalyst at the temperature of 100 to 180°C, at total pressure of 0.5 to 6 MPa with volumetric hourly velocity of 1 to 10 h-1 and at supply of hydrogen, which corresponds to volumetric "hydrogen/hydrocarbons" ratio of 5 to 80 nl/l/h; c) hydroisomerisation/hydrocracking of the whole hydrogenated liquid fuel of stage b), without implementation of the pre-separation stage in presence of hydrogen and catalyst of hydroisomerisation/hydrocracking; d) distillation of the flow subject to hydrocracking/hydroisomerisation, which has been obtained at stage (c) in order to obtain at least fractions of kerosene and gas oil, and residual fraction. Obtained gas oil has the flow point below 0°C, cetane number exceeds 60, kerosene has setting point of not more than -35°C, and height of smokeless flame exceeds 25 mm.

EFFECT: improvement of gas oil properties.

14 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: invention relates to a method for production of a high-octane component of engine fuel, including hydraulic treatment of a straight-run benzene fraction, separation of liquid products of hydraulic treatment into light and heavy fractions, isomerisation of light fraction and reforming of heavy fraction in presence of a platinum-containing catalyst with direction of excessive reforming hydrogen for isomerisation. Isomerisation is carried out in presence of a sulfate-zirconium catalyst and hydrogen, the produced isomerisate is stabilised with subsequent release of light and heavy fractions from the isomerisate by rectification, the mixture of which represents a product of isomerisate and also fractions containing n-hexane and methyl pentanes, which is recirculated in raw materials of isomerisation, the reformate released in process of heavy fraction reforming is exposed to rectification with release of a reformate fraction boiling up to 60-70°C, sent for mixing with the isomerisate prior to its stabilisation and fraction of 60-70°C-KK, mixed with the isomerisate product to product the target product.

EFFECT: reduced costs for isomerisation process together with preservation of the target product quality.

2 cl, 1 tbl, 6 ex

FIELD: oil and gas production.

SUBSTANCE: invention refers to procedure and installation for processing heavy oil raw stock wherein at least 80 wt % of compounds have temperature over 340°C. The procedure consists in the following stages: (a) hydraulic conversion in a reactor with a boiling layer of catalyst operating on a rising flow of liquid and gas at temperature 300- 500°C with conversion 10-98 wt % of a fraction having boiling temperature above 540°C; (b) division of exit flow after stage (a) into gas containing hydrogen and H2S, a fraction including benzene and, not necessarily, a fraction heavier, than the benzene fraction and the fraction of naphtha; c) hydrofining by contacting at least one catalyst and at least one fraction including benzene produced at stage (b); d) division of exit flow after stage (c) into gas containing hydrogen and at least one benzene fraction with contents of sulphur below 50 p/mln, preferably less, than 20 p/mln and more preferably less, than 10 p/mln. Stage of hydro-conversion (a) is performed at pressure P1 and stage of hydrofining (c) is performed at stage P2; difference ΔP=P1-P2 amounts to at least 3 MPa. Hydrogen is supplied at stage of hydro-conversion (a) and hydrofining (c) by means of one system of hydrogen compression with n steps.

EFFECT: reduced expenditures at maintaining rational duration of cycle of catalytic hydrofining, reduced content of sulphur.

37 cl, 2 ex, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: hydrocarbon material processing plant in the northern regions includes raw material and product tank farms, hydrocarbon material stabilising unit, atmospheric distillation unit for stable hydrocarbon material, gas fractionation unit for hydrocarbon gas released at atmospheric distillation unit and stabilising unit, unit for isomerisation, hydrofining and reforming benzene fraction received at atmospheric distillation unit with production of high-octane gasoline, hydrofining unit for diesel fuel fraction received at atmospheric distillation unit and its further dewaxing with output of either winter or arctic diesel fuel, unit of sanitary purification from acid gases with further disposal of effluent in absorption wells for injection into the formation, unit for compounding different flows of hydrocarbon raw material, unit for compounding commercial products such as residue of atmospheric distillation fractioning, ballast fractions of recycling units and a part of stabilised input raw material with production of transported merchantable oil and system of pipelines interconnecting process units and tank farms.

EFFECT: effective processing of hydrocarbon material in the northern regions, expanding range of commercial products.

13 cl, 1 dwg, 3 tbl

FIELD: chemistry.

SUBSTANCE: alumoplatinum catalyst with the platinum content of 0.6 wt % is used as a hydration catalyst. The hydration process is carried out under pressure to 4 MPa, temperature of 250-300°C, volume rate of the raw material supply of 0.5-1.0 h-1 and a ratio of hydrogen-containing gas/raw material to 1500 nm3/m3.

EFFECT: extension of the raw material resources for the production of scarce jet fuel for supersonic aircraft, simplification of the technological scheme of the process and an increased output of the target jet fuel.

3 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of manufacturing waxy Diesel fuel by hydrogenating processing of crude oil in the presence of a catalysts at higher temperatures and pressure, and further rectification of hydrogenisate with the separation of light and heavy Diesel fractions, which are further mixed, where as crude oil used is a mixture of gasoil of direct distillation of crude oil and a gasoline fraction of delayed coking, in a ratio from 95:5 wt % to 70:30 wt %, which is successively subjected to hydropurification, catalytic hydrodeparaffinisation and additional hydropurification, with a volume of the catalysts from the entire charge constituting: of hydropurification 45-65 wt %, catalytic hydrodeparaffinisation - 20-35 wt %, additional hydropurification - 10-30 wt %.

EFFECT: method makes it possible to extend raw material resources for the production of deficit waxy Diesel for land transport, exploited under conditions of cold and Arctic climate, due to inclusion into the composition of wide gasoline fraction of delayed coking.

3 cl, 3 ex

FIELD: machine building.

SUBSTANCE: method for obtaining diesel fuel from solid synthetic hydrocarbons obtained as per Fischer-Tropsch method is described. It involves hydrocracking/isodewaxing of solid hydrocarbons on a catalyser containing a carrier and a plate; at that, the carrier is made from mixture of 10-40% zeolite SAPO-41 and γ-Al2O3, and platinum content is 0.2-0.4% at pressure of 1-6 MPa, temperature of 340-420°C, volume feed velocity of hydrocarbons of 0.5-1.5 h-1, the ratio of hydrogen:hydrocarbons of 800-1200:1 nl/l with further extraction by rectification from hydrocracking products of the fraction of 180°-360°C, which is subject to hydrofinishing on a palladium catalyser containing 0.5 to 1.5 wt % of palladium applied to the carrier made from γ-Al2O3 with effective pore radius of 4.0-10.0 nm; at that, hydrofinishing process is performed at the temperature of 150-250°C, pressure of 2.0-4.0 MPa, volume feed velocity of the extracted fraction of 1.0-15.0 h-1, at the ratio of hydrogen:fraction of 300-800:1 nl/l. Besides, a catalyser is described, which is used for implementation of hydrocracking/isodewaxing stage of the above method.

EFFECT: increase in yield of target fraction at improvement of catalytic activity of the catalyser.

2 cl, 1 tbl, 6 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to hydrocracking of hydrocarbon material. Invention refers to the hydrocracking method for obtaining ultralow sulphur-bearing diesel fuel, which involves the following: (a) interaction of the first hydrocarbon raw material (1) with hydrogen (28) in hydrocracking zone (3), which contains catalyst of hydrocracking; and as a result, hydrocarbons are obtained with boiling limits of diesel fuel; (b) introduction of output flow (4) obtained at stage (a) from hydrocracking zone and the second hydrocarbon raw material (5) to the first desulphuration zone (7) containing desulphuration catalyst; as a result, the first output flow (8) from desulphuration zone is obtained; (c) direction of the first output flow (8) from desulphuration zone to hot steam-liquid high-pressure separator (9) so that the first vaporous hydrocarbon flow (10) containing hydrogen and the first liquid hydrocarbon flow (25) is obtained; (d) introduction of the first vaporous hydrocarbon flow containing hydrogen and the third hydrocarbon raw material (11) containing hydrocarbons with boiling limits of diesel fuel to the second desulphuration zone (14) containing desulphuration catalyst; and as a result, output flow (15) from the second desulphuration zone is obtained; (e) direction of output flow (15) from the second desulphuration zone to cold vapour-liquid separator (18); as a result, gaseous flow (26) saturated with hydrogen and the second liquid hydrocarbon flow (19) is obtained; and (f) direction of the first liquid hydrocarbon flow (25) and the second liquid hydrocarbon flow (19) to separation zone (20); as a result, hydrocarbon flow (24) including hydrocarbons with boiling limits of diesel fuel and hydrocarbon flow (23) containing hydrocarbons boiling at temperature of higher than 565°C is obtained.

EFFECT: obtaining ultralow sulphur-bearing diesel fuel.

10 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining diesel fuel, involving thermal treatment of raw material, separation of thermal treatment products into a light and a heavy fraction, hydrogenation refinement of the separated fractions. The light fraction of thermal treatment products undergoes hydrofining in a mixture with a straight-run diesel fraction and light gas oil from catalytic cracking, taken in weight ratio ranging from 20%-60%-20% to 40%-50%-10% respectively, and the remaining heavier fraction of thermal treatment products undergoes hydrocracking in a mixture a straight-run vacuum distillate in weight ratio ranging from 25%-75% to 75%-25% respectively. Diesel fractions boiling in the 160-370°C temperature interval are extracted from hydrofining and hydrocracking products and then mixed in weight ratio ranging from 30%-70% to 60%-40%, respectively, to obtain the desired product.

EFFECT: high output of diesel fuel which meets modern requirements.

4 cl, 3 ex

FIELD: oil and gas production.

SUBSTANCE: motor fuel obtaining method involves hydraulic cleaning of mixture of distillates of thermal processes with once-run diesel distillate at increased temperature and pressure, division of hydrogenisate by means of rectification into gasoline and diesel distillates, additional hydraulic cleaning and further reforming of isolated gasoline distillate. Method is differed by the fact that as distillates of thermal processes there used is wide gasoline-gasoil fraction boiling out within temperatures of 30-370°C and which is mixed with once-run diesel distillate in ratio of 10:90 wt % to 40:60 wt %. Additional hydraulic cleaning of gasoline distillate separated from hydrogenisate is performed mixed with once-run gasoline distillate in ratio of 15:85 wt % to 25:75 wt %, after that hydraulically cleaned fraction is supplied to be reformed. Diesel distillate separated from hydrogenisate is partially returned to hydrogenising stage in quantity of 5-20 wt % to initial raw material, and the remaining part is produced as commercial diesel fuel. Hydraulic cleaning is performed at temperature of 330-400°C, pressure of 3-7 MPa in presence of alumino-nickel-molybdenum or alumino-cobalt-molybdenum calalytic agent. In addition, to hydraulic cleaning raw material there can be added 3-30 wt % of light gas oil of catalytic cracking boiling out within temperatures of 160-360°C.

EFFECT: method allows obtaining motor fuels corresponding to requirements of modern standards when enlarging raw material base owing to wider mixed fraction of gasoline and diesel distillates of secondary processes involved in hydrogenising process.

3 cl, 4 ex

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil processing, notably to method of producing sweetened ecologically pure diesel fuel with ultra low contents of sulphur. The method of producing diesel fuel consists in the following: at the first stage oil virgin diesel fraction boiled out within ranges of 172-365°C or the said fraction in mixture with diesel fractions of secondary processes is subject to hydro-fining on catalyst containing (wt %): nickel oxide - 3.0-8.0; molybdenum oxide - 11.0-22.0; promoter - 0.2-4.0; aluminium oxide - the rest at temperature 280-410°C, at hydrogen pressure 3.0-7.0 MPa, at volume rate of crude oil supply 0.5-2.5 h-1 and at ratio of hydrogen containing gas to crude oil 300-500:1 nm3/m3. Further obtained product is subject to sweetening combined with iso-de-waxing on catalyst containing (wt %): platinum - 0.15-0.6; tungsten oxide - 1.0-4.0; promoter - 0.2-1.0; zeolite ZSM-5 in H-form - 5.0-40.0, aluminium oxide - the rest at temperature 220-360°C, hydrogen pressure 2.5-4.5 MPa, volume rate of crude oil supply 0.5-2.5 h-1 and at ratio of hydrogen containing gas to crude oil 500-1500:1 nm3/m3; also contents of hydrogen sulphide in hydrogen containing gas circulating at stage of sweetening combined with iso-de-waxing does not exceed 10 ppt.

EFFECT: method facilitates high yield (88-95 wt %) production of sweetened diesel fuel with ultra low contents of sulhur.

7 cl, 3 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: process implies hydrotreatment of diesel fuel by catalytic treatment thereof in the presence of hydrogen-containing gas under elevated temperature and pressure resulting in hydrogenation product, separation of hydrogenation product resulting in hydrogen-containing gas and liquid phase, and stabilisation of liquid phase, distinguishing itself by the fact that 15-25% of liquid phase are recirculated to mix with diesel fuel feed to improve desulphuration.

EFFECT: improved desulphuration of diesesl fuel.

4 ex, 1 tbl, 1 dwg

The invention relates to the field of oil refining, specifically, to the hydrotreatment of crude oil, in particular, straight-run petroleum fractions and gas oil catalytic cracking is used to obtain environmentally friendly diesel fuels

FIELD: chemistry.

SUBSTANCE: invention relates to a catalyst for realising a method of hydrogenating olefins and oxygen-containing compounds in synthetic liquid hydrocarbons obtained via a Fischer-Tropsch method, containing a porous support made from γ-aluminium oxide on which a catalytically active palladium component is deposited, characterised by that pores in the support have effective radius of 4.0-10.0 nm, wherein content of foreign-metal impurities in the support is not more than 1500 ppm, and content of palladium in the catalyst is equal to 0.2-2.5 wt %. The invention also relates to a hydrogenation method using said catalyst.

EFFECT: invention enables to obtain saturated hydrocarbons from liquid Fischer-Tropsch synthesis products, which are a complex mixture of paraffin hydrocarbons with 5-32 carbon atoms, with ratio of normal paraffin hydrocarbons to isoparaffin hydrocarbons ranging from 1:1 to 7:1, containing up to 50% olefins and up to 5% oxygen-containing compounds.

2 cl, 1 tbl, 7 ex

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