Method of producing light gasoline with low sulfur content

FIELD: chemistry.

SUBSTANCE: method includes the following steps: a) conducting a demercaptization step by attaching, at least, a portion of the mercaptans to the olefins by contacting the gasoline with, at least, the first catalyst at a temperature of 50 to 250°C, a pressure of 0.4 to 5 MPa, and a liquid space velocity (LHSV) of 0.5 to 10 h-1. The first catalyst is presented in a sulfided form and comprises the first carrier, at least, one metal selected from group VIII, and, at least, one metal selected from group VIb of the Periodic Table of Elements, a weight percent expressed as the equivalent of metal oxide selected from group VIII, with respect to the total weight of the catalyst, is from 1 to 30%, and the weight percent expressed in the equivalent of metal oxide selected from group VIb is from 1 to 30% based on the total weight of the catalyst; b) carrying out the step of treating the gasoline from step a) with hydrogen in a distillation column comprising, at least, one reaction zone containing, at least, one second catalyst comprising the second carrier and, at least, one metal from group VIII. The conditions in step b) are selected such that the following operations are carried out simultaneously in the said distillation column: I) distillation with the separation of gasoline from step a) into a light gasoline fraction with a reduced content of sulfur-containing compounds and a heavy gasoline fraction having a higher boiling point, than light gasoline, and containing most of the sulfur-containing compounds, the light gasoline fraction being withdrawn at a point above the reaction zone, and the heavy gasoline fraction is withdrawn at a point located under the reaction zone; II) contacting the gasoline fraction from step a) with the second catalyst to carry out the following reactions: (i) thioetherification by attaching a portion of the mercaptans to a portion of the diolefins to produce thioethers, (ii) selective hydrogenating a portion of the diolefins to olefins and, optionally, (iii) isomerization of olefins.

EFFECT: method helps to produce a light gasoline fraction.

14 cl, 2 dwg

 



 

Same patents:

FIELD: oil and gas production.

SUBSTANCE: invention relates to stabilisation of gas-saturated oil. Proposed method comprises two-stage separation at 20-80°C with separation of gas at 1st separation stage at 0.11-0.16 MPa. It comprises also separation of degassed oil at 2nd separation stage at 0.01-0.06 MPa to obtain separated oil and gas. Separated gas is sucked off by degassing device, for example, ejector operated on associated gas from oil field separation stage. Here, extracted gas is mixed with 1st separation stage gas. Produced gas mix is cut in stable condensate and dry gas. Then, stable condensate is mixed with separated oil to feed stabilised oil and dry gas to consuming equipment.

EFFECT: higher yield of separator oil.

3 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing base oil with low content of sulphur, ecologically clean aromatic filler materials and caoutchouc and rubber plasticisers, involving selective purification of petroleum oil fractions with a selective solvent, separation of the first step extract and raffinate solutions, wherein the first step extract solution is cooled with subsequent separation a first step pseudo-raffinate solution in the settling tank, and after solvent regeneration, the first step raffinate solution is dewaxed and oxidised with subsequent extraction of the oxidised dewaxed oil to obtain second step raffinate and extract solutions; after solvent regeneration and subsequent adsorption or hydrofining, group II base oil with low sulphur content is obtained from the second step raffinate solution, wherein the second step extract solution is mixed with the first step pseudo-raffinate solution to obtain, after solvent regeneration, ecologically clean aromatic filler and a caoutchouc and rubber plasticiser with less than 2.9% content of polyaromatic hydrocarbons (PAH).

EFFECT: obtaining base oil with negligible sulphur content.

3 cl, 3 tbl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention related to a method of calcium content decrease in fluid hydrocarbon medium, which includes contacting of mentioned above fluid hydrocarbon medium with a sequestrant, represented with a carboxylic acid for calcium containing separating complex formation, b. contacting of mentioned above fluid hydrocarbon medium with water medium for emulsion formation, in which after the mentioned above emulsion separation, at least part of the mentioned separated calcium containing complex stays in the water medium, and contacting the mentioned water medium with water soluble or water dispersing polymer, with I formula for the calcium disposals inhibition on surfaces, contacting with the mentioned above water medium, where the polymer has: (I) formula, where E - is a repeating fragment, which remains after non-saturated ethylene type compound polymerization, R1 is a hydrogen atom or the lowest (C1-C6)- alkyl or carbonyl, Q - is O or NH, R2 - is the lowest (C1-C6)-alkyl, hydroxy - substituted the lowest (C1-C6)-alkyl, the lowest (C1-C6)-alkyl sulfonic acid -(Et-O)-n, -(iPr-O)-n or -(Pr-O-)n, where n - is a variable from around 1 up to 100, and R3 - is a hydrogen atom or XZ, where X - is anion radical, selected form a group, consisting from SO3, PO3 or COO, Z - is hydrogen atom or atoms or any other water soluble cationic fragment, which serves is a balance in X anion radical valence; F - when presented, is a repeating fragment with a II: formula, where X and Z are the sane as in I formula, R4 - is a hydrogen atom or (C1-C6) the lowest alkyl, R5 - is hydroxy - substituted alkyl or alkylene, which has from 1 to 6 atoms, and XZ can or can not to be presented, c and d - are positive whole numbers, e is not-negative number, and j is equal to 0 or 1.

EFFECT: calcium disposal decrease on a surfaces contacting with water phase water in oil separated emulsion.

21 cl, 7 ex, 7 tbl

Treatment process // 2316577

FIELD: petroleum processing.

SUBSTANCE: invention relates to process of treating hydrocarbon stock, in particular to reducing nitrogen level in liquid hydrocarbon stock. Process is characterized by that (a) liquid hydrocarbon stock containing alkylation agent and organonitrogen compounds is brought into contact with acid catalyst at elevated temperature in a first reaction zone to form liquid hydrocarbon stock with reduced content of alkylation agent and organonitrogen compounds having elevated boiling temperatures; and (b) liquid hydrocarbon stock with reduced content of alkylation agent and containing organonitrogen compounds with elevated boiling temperatures is fractioned to remove said organonitrogen compounds.

EFFECT: enabled production of liquid hydrocarbon stock with reduced content of alkylation agent and reduced nitrogen level.

14 cl, 3 dwg

The invention relates to integrated processing of high-temperature pyrolysis condensate fraction homogeneous pyrolysis of saturated hydrocarbons WITH3-C5

The invention relates to removing bromine-reactive hydrocarbon contaminants from aromatic materials through contact of these products with acid active catalyst

FIELD: chemistry.

SUBSTANCE: invention relates to a fluidised-bed reactor and a method of catalytic hydrogenation in the reactor. The fluidised-bed reactor comprises a reactor shell, vertical to the ground, a phase separator located within the top part of the shell, an internal circulation zone, located under the phase separator. The internal circulation zone comprises a cylinder, a tapered diffusion section and a guide support. Both the cylinder and the tapered diffusion section at the bottom of the cylinder are located inside the reactor shell, the guide support is fitted on the shell inner wall at the bottom of the tapered diffusion section. The guide support is an annular protrusion of the reactor inner wall.

EFFECT: invention provides effective hydrogenation resulting in a high quality product, and stable operation of the reactor.

26 cl, 2 dwg, 4 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining engine fuel in interval of petrol boiling by benzole alkylation. Invention deals with method of obtaining hydrocarbon product in interval of petrol boiling, which has concentration of benzole not more than 1 vol.% and regulated temperature of evaporation, from raw material, which consists of reforming product, with concentration of benzole at least 20 wt %, which includes reforming product alkylation in reactor of alkylation in presence of zeolite catalyst MWW at least in two immobile catalytic layers in mode of single passing in liquid phase by alkylation agent.

EFFECT: high level of benzole and olefin conversion.

10 cl, 10 dwg, 15 tbl, 14 ex

FIELD: oil and gas industry.

SUBSTANCE: as an additive to increase the processing depth of hydrocarbon-containing raw materials, in thermocatalytic processes there used is organic salt having the following formula: M(OOC-R)n, or M(SOC-R)n, or M(SSC-R)n, where R means alkyl, aryl, isoalkyl, tert-alkyl, alkylaryl, possibly containing hydroxylic, keto-, amino-, carboxylic, thiocarbamic groups, n 1-3, and M means transition metal from the elements of the Mendeleyev's Classification Table. Also, invention refers to the method for increasing the processing depth of hydrocarbon-containing raw materials, in which the above additive is used.

EFFECT: use of the described invention allows increasing the processing depth of hydrocarbon-containing raw materials in thermocatalytic processes.

14 cl, 8 ex, 12 tbl

FIELD: oil and gas industry.

SUBSTANCE: catalytic reforming system described below includes the following: raw material stream including naphtha and at least one compound containing manganese, which is chosen from the group consisting of manganese cyclopentadienyl tricarbonyl, manganese methylcyclopentadienyl tricarbonyl, manganese dimethylcyclopentadienyl tricarbonyl, manganese trimethylcyclopentadienyl tricarbonyl, manganese tetramethylcyclopentadienyl tricarbonyl, manganese pentamethylcyclopentadienyl tricarbonyl, manganese ethylcyclopentadienyl tricarbonyl, manganese diethylcyclopentadienyl tricarbonyl, manganese propylcyclopentadienyl tricarbonyl, manganese isopropylcyclopentadienyl tricarbonyl, manganese tert- butylcyclopentadienyl tricarbonyl, manganese octylcyclopentadienyl tricarbonyl, manganese dodecyclopentadienyl tricarbonyl, manganese ethylmethylcyclopentadienyl tricarbonyl and manganese indenyl tricarbonyl; and catalyst; at that, catalyst of reforming plant includes the following: substrate; precious metal on substrate; and deposit of free particles of manganese on catalyst, which are formed during decomposition at least of one manganese containing compound which is described above. Method for increasing octane number of mixture of reforming product produced with catalytic reforming plant at oil refinery having the stream of raw product of reforming plant is described; the above method includes the following: addition of catalyst to raw product stream of reforming plant; the above catalyst contains oxidised manganese; as a result, octane number of mixture of the produced reforming product increases relative to octane number of mixture of produced reforming product obtained at oil refinery without any addition of catalyst containing the oxidised manganese; at that, oxidised manganese catalyst is obtained from group of manganese tricarbonyls which are specified above.

EFFECT: increasing catalyst service life or increasing octane number of reforming product stream.

19 cl

The invention relates to systems for producing high-octane gasoline low-octane reforming of gasoline fractions

FIELD: oil and gas industry.

SUBSTANCE: catalytic reforming system described below includes the following: raw material stream including naphtha and at least one compound containing manganese, which is chosen from the group consisting of manganese cyclopentadienyl tricarbonyl, manganese methylcyclopentadienyl tricarbonyl, manganese dimethylcyclopentadienyl tricarbonyl, manganese trimethylcyclopentadienyl tricarbonyl, manganese tetramethylcyclopentadienyl tricarbonyl, manganese pentamethylcyclopentadienyl tricarbonyl, manganese ethylcyclopentadienyl tricarbonyl, manganese diethylcyclopentadienyl tricarbonyl, manganese propylcyclopentadienyl tricarbonyl, manganese isopropylcyclopentadienyl tricarbonyl, manganese tert- butylcyclopentadienyl tricarbonyl, manganese octylcyclopentadienyl tricarbonyl, manganese dodecyclopentadienyl tricarbonyl, manganese ethylmethylcyclopentadienyl tricarbonyl and manganese indenyl tricarbonyl; and catalyst; at that, catalyst of reforming plant includes the following: substrate; precious metal on substrate; and deposit of free particles of manganese on catalyst, which are formed during decomposition at least of one manganese containing compound which is described above. Method for increasing octane number of mixture of reforming product produced with catalytic reforming plant at oil refinery having the stream of raw product of reforming plant is described; the above method includes the following: addition of catalyst to raw product stream of reforming plant; the above catalyst contains oxidised manganese; as a result, octane number of mixture of the produced reforming product increases relative to octane number of mixture of produced reforming product obtained at oil refinery without any addition of catalyst containing the oxidised manganese; at that, oxidised manganese catalyst is obtained from group of manganese tricarbonyls which are specified above.

EFFECT: increasing catalyst service life or increasing octane number of reforming product stream.

19 cl

FIELD: oil and gas industry.

SUBSTANCE: as an additive to increase the processing depth of hydrocarbon-containing raw materials, in thermocatalytic processes there used is organic salt having the following formula: M(OOC-R)n, or M(SOC-R)n, or M(SSC-R)n, where R means alkyl, aryl, isoalkyl, tert-alkyl, alkylaryl, possibly containing hydroxylic, keto-, amino-, carboxylic, thiocarbamic groups, n 1-3, and M means transition metal from the elements of the Mendeleyev's Classification Table. Also, invention refers to the method for increasing the processing depth of hydrocarbon-containing raw materials, in which the above additive is used.

EFFECT: use of the described invention allows increasing the processing depth of hydrocarbon-containing raw materials in thermocatalytic processes.

14 cl, 8 ex, 12 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining engine fuel in interval of petrol boiling by benzole alkylation. Invention deals with method of obtaining hydrocarbon product in interval of petrol boiling, which has concentration of benzole not more than 1 vol.% and regulated temperature of evaporation, from raw material, which consists of reforming product, with concentration of benzole at least 20 wt %, which includes reforming product alkylation in reactor of alkylation in presence of zeolite catalyst MWW at least in two immobile catalytic layers in mode of single passing in liquid phase by alkylation agent.

EFFECT: high level of benzole and olefin conversion.

10 cl, 10 dwg, 15 tbl, 14 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a fluidised-bed reactor and a method of catalytic hydrogenation in the reactor. The fluidised-bed reactor comprises a reactor shell, vertical to the ground, a phase separator located within the top part of the shell, an internal circulation zone, located under the phase separator. The internal circulation zone comprises a cylinder, a tapered diffusion section and a guide support. Both the cylinder and the tapered diffusion section at the bottom of the cylinder are located inside the reactor shell, the guide support is fitted on the shell inner wall at the bottom of the tapered diffusion section. The guide support is an annular protrusion of the reactor inner wall.

EFFECT: invention provides effective hydrogenation resulting in a high quality product, and stable operation of the reactor.

26 cl, 2 dwg, 4 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of preparing a Sn(Zr)-γ-Al2O3 support for a gasoline fraction reforming catalyst, wherein the support is prepared by precipitating aluminium nitrate solution with aqueous ammonia solution, with subsequent steps of filtering the suspension and washing the precipitate, peptising the precipitate with an acid and simultaneously adding a modifying additive of Sn(Zr) by liquid-phase formation of a pseudo-sol in the form of spherical granules, followed by washing the spherical granules, drying and heat treatment, wherein a spherical support with a diameter of 1.7±0.1 mm is obtained, which is characterised by monomodal pore size distribution with specific surface area of (265-326) m2/g, pore volume of (0.6-0.68) cm3/g, average pore diameter of (8.0-9.6) nm, bulk density of (0.53-0.59) g/cm3 and mechanical bearing strength (148-205) kg/cm2. The invention also relates to a method of preparing a reforming catalyst by saturating a Sn-γ-Al2O3 support with a solution containing 0.24-0.26 wt % chloroplatinic acid with respect to Pt, or saturating a Zr-γ-Al2O3 support with a solution containing 0.28-0.29 wt % perrhenic acid with respect to Re and 0.24-0.26 wt % chloroplatinic acid with respect to Pt. The invention also relates to a method of reforming gasoline fractions in the presence of catalysts prepared using methods described above.

EFFECT: high activity and selectivity of catalysts when reforming gasoline fractions.

13 cl, 2 tbl, 25 ex

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical industry. To obtain spheroidal alumina particles suspension is prepared, containing water, an acid and at least one boehmite powder. Ratio of size of crystallites along directions [020] and [120], obtained using Scherrer formula for x-ray diffraction, varies from 0.7 to 1. Method includes adding to suspension a porogenic agent, surfactant and, optionally, water or emulsion containing at least one porogenic agent, surfactant and water. Content of porogenic agent, expressed as a ratio of weight of porogenic agent to total weight of water added to obtained suspension is in range from 0.2 to 30 %. Suspension is mixed and spheroidal particles are formed by coagulation in a droplet. Obtained particles are dried and calcined. Particles have average diameter from 1.2 to 3 mm, BET specific surface area of 150–300 m2/g, value of density of filling with a seal from 0.5 to 0.6 g/ml.

EFFECT: invention enables to obtain alumina particles with high mechanical strength with low density.

15 cl, 1 dwg, 1 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: invention discloses and describes methods for treating or regenerating spent catalysts containing a transition metal and a catalyst substrate, reforming methods, and a regenerated catalyst produced by the said methods. The method for treating the spent catalyst comprises: (1) contacting the spent catalyst with a halogen-containing stream containing chlorine and fluorine to produce a halogenated spent catalyst. The halogen-containing stream contains less than 100 ppm weight of the oxygen-containing compounds; (2) contacting the halogenated spent catalyst with a purge stream containing essentially inert gas; and (3) contacting the halogenated spent catalyst with a coke-removal gas stream containing oxygen; where the stream of coke oven gas contains less than 50 ppm weight of the halogenated compounds after step (2). Another method of treating the catalyst comprises: (i) bringing the spent catalyst into contact with a halogen-containing stream containing chlorine and fluorine to produce a halogenated spent catalyst; and (ii) bringing the halogenated spent catalyst into contact with a coke oven gas stream containing oxygen after step (i). In the halogenation step, fluorine and chlorine can be used together, or fluorine and chlorine can be used sequentially. The reforming method comprises: (a) bringing the hydrocarbon feed into contact with the aromatization catalyst under reforming conditions in the reactor system to produce an aromatic product; (b) carrying out step (a) for a period of time sufficient to form a spent aromatization catalyst; (c) bringing the spent aromatization catalyst into contact with a halogen-containing stream containing chlorine and fluorine to produce a halogenated spent catalyst; and (d) bringing the halogenated spent catalyst into contact with a coke oven gas stream containing oxygen.

EFFECT: spent catalyst, which was initially halogenated, has a significantly lower start-up temperature than the spent catalyst, which was first subjected to the coke removal, demonstrating the unexpected advantage of carrying out the halogenation step prior to the carbon annealing step, the advantage is maintained, when halogens are added sequentially prior to the coke removal step.

39 cl, 4 tbl, 63 ex

FIELD: chemistry.

SUBSTANCE: method includes the following steps: a) conducting a demercaptization step by attaching, at least, a portion of the mercaptans to the olefins by contacting the gasoline with, at least, the first catalyst at a temperature of 50 to 250°C, a pressure of 0.4 to 5 MPa, and a liquid space velocity (LHSV) of 0.5 to 10 h-1. The first catalyst is presented in a sulfided form and comprises the first carrier, at least, one metal selected from group VIII, and, at least, one metal selected from group VIb of the Periodic Table of Elements, a weight percent expressed as the equivalent of metal oxide selected from group VIII, with respect to the total weight of the catalyst, is from 1 to 30%, and the weight percent expressed in the equivalent of metal oxide selected from group VIb is from 1 to 30% based on the total weight of the catalyst; b) carrying out the step of treating the gasoline from step a) with hydrogen in a distillation column comprising, at least, one reaction zone containing, at least, one second catalyst comprising the second carrier and, at least, one metal from group VIII. The conditions in step b) are selected such that the following operations are carried out simultaneously in the said distillation column: I) distillation with the separation of gasoline from step a) into a light gasoline fraction with a reduced content of sulfur-containing compounds and a heavy gasoline fraction having a higher boiling point, than light gasoline, and containing most of the sulfur-containing compounds, the light gasoline fraction being withdrawn at a point above the reaction zone, and the heavy gasoline fraction is withdrawn at a point located under the reaction zone; II) contacting the gasoline fraction from step a) with the second catalyst to carry out the following reactions: (i) thioetherification by attaching a portion of the mercaptans to a portion of the diolefins to produce thioethers, (ii) selective hydrogenating a portion of the diolefins to olefins and, optionally, (iii) isomerization of olefins.

EFFECT: method helps to produce a light gasoline fraction.

14 cl, 2 dwg

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