Method for regeneration and optional return for recycling of catalyst in suspended layer hydrocracking method

FIELD: chemistry.

SUBSTANCE: invention relates to recovery of hydrocracking catalyst with suspended layer, which includes: separation (120) of exhaust flow (100) from hydrocracking zone (35) with suspended layer on first part (125), including solvent and clarified resin, and second part (130) including resin and catalyst; contacting (140) of second part (130) with acid (145) for leaching of catalyst from resin for producing aqueous solution (170) and residue (165) resin; and contacting (200) aqueous solution (170) with anion (205) to produce insoluble salt (225) and second aqueous solution (220), where insoluble salt (225) is catalyst.

EFFECT: technical result consists in improved method of regenerating hydrocracking catalyst with suspended layer.

10 cl, 2 dwg

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to method of increasing quality of residue of distillation of hydrocarbons, including hydrocracking of residue at the first stage of reaction with formation of flow, output from the first stage; hydrocracking of de-asphalted oil at the second stage of reaction with formation of flow, output from the second stage; fractioning of flow, output from the first stage, and flow, output from the second stage, with extraction of, at least, one distillate hydrocarbon fraction and residual hydrocarbon fraction, supply of residual hydrocarbon fraction into installation of de-asphalting with solvent and obtaining fraction of asphaltenes and fraction of de-asphalted oil.

EFFECT: higher total conversion of residue with reduction of catalyst introduction rate and quantity of consumed hydrogen.

21 cl, 4 dwg, 1 tbl, 2 ex

FIELD: machine building.

SUBSTANCE: proposed device comprises elongated vessel accommodating the tray. Said tray comprises multiple long cap extending above the tray upper surface. Said caps have bores in cover or side bore. Note here that first cap has topmost bore at great height abode the tray top surface compared with topmost bore of second cap.

EFFECT: controlled profile of fluid flow at increase in fluid flow.

13 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention is related to hydrocracking processes, under conditions of which large proportion of heavy hydrocarbon stock e.g. Vacuum Gas Oil (VGO) turns to hydrocarbons with lower molecular mass and lower boiling temperature. The invention relates to the method of production of base oil, involving: a) hydrocracking of heavy hydrocarbon stock with hydrocracking catalyst containing the preset amount less than 15 wt % of beta-zeolite with flow coming out of a hydrocracking plant containing at least 40 wt % of hydrocarbons boiling at temperature of 382°C (720°F), and b) separation from flow coming out of a hydrocracking plant of unconverted oil with pour point not above 18°C (65°F) in form of high-boiling fraction containing base oil.

EFFECT: improvement of base oil quality.

11 cl, 1 dwg, 4 tbl, 2 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to production of hydrocarbon fuel. The invention relates to the method including heavy charge suspension hydrocracking with obtained products of suspension hydrocracking; separation of the above products of suspension hydrocracking with obtainment of a tar pitch flow and a flow of heavy vacuum gas oil; mixing of at least a part of tar pitch with solvent in order to dissolve a part of tar pitch in the solvent; mixing of the dissolved part of tar pitch with at least a part of heavy vacuum gas oil with production of a composite product. The invention is related also to a device for hydrocarbon fuel and composite production.

EFFECT: producing turbine or bunker fuel with characteristics acceptable for burning in gas turbines or for producing different grades of bunker fuel.

1 cl, 1 dwg, 4 tbl, 3 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 of converting heavy hydrocarbon material to lighter hydrocarbon products and separating coal tar, which involves hydrocracking the heavy hydrocarbon material suspended with a granular solid material in the presence of hydrogen in a hydrocracking reactor to form a hydrocracked stream containing vacuum gas oil and coal tar. Gas oil is separated from coal tar in a first vacuum column and further separation of vacuum gas oil from coal tar is carried out in a second vacuum column. The invention also relates to apparatus for converting heavy hydrocarbon material to lighter hydrocarbon products and separating coal tar.

EFFECT: obtaining coal tar from which particles capable of being transformed without sticking can be prepared.

10 cl, 2 dwg, 1 tbl, 1 ex

Sinter composition // 2499014

FIELD: chemistry.

SUBSTANCE: invention relates to a sinter composition suitable for transportation, which contains hydrocarbon material which boils at temperature higher than 538°C and which contains not more than 30 wt % vacuum gas oil, 1-20 wt % organic residue which is insoluble in toluene, and having hydrogen concentration of not more than 7.3 wt % with respect to an ash-free base, having initial softening temperature of at least 66°C.

EFFECT: less sticky sinter composition which can be granulated and transported without agglomeration.

7 cl, 3 dwg, 2 tbl, 2 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil stock quality improvement. This invention relates to method of improvement of refining residues quality including residues hydrocracking at the first stage (14) of reaction with formation of flow passing from the first stage; hydrocracking of fraction of asphalt-free oil at the second stage (22) of reaction with formation of flow passing from the second stage; supply of flow passing from the first stage and the flow passing from the second stage to separating system (26); fractioning of flow passing from the first stage and the flow passing from the second stage in separating system (26) with extraction of at least one distillate hydrocarbon fraction and residual hydrocarbon fraction; and supply of residual hydrocarbon fraction to the plant (32) of grout deasphalting obtaining fraction of asphaltens and fraction of asphalt-free oil.

EFFECT: increasing general conversion of residue.

17 cl, 4 dwg, 1 tbl, 1 ex

FIELD: nanotechnology.

SUBSTANCE: invention relates to the improved method of obtaining the metal nanoparticles for use in thermocatalytic processes of hydrocarbon crude refining. The method of obtaining the metal nanoparticles includes their recovery from organic metal salt in the thermal treatment conditions in a hydrocarbon crude medium, and the recovery is carried out of the organic salt having the formula M(OOC-R)n or M(SOC-R)n, wherein R represents alkyl, aryl, C17H33-, isoalkyl, tert-alkyl, alkylaryl, diethylamino-, possibly comprising a hydroxyl or amino group, n=1-3, and M represents a metal of the elements of the periodic table, at a temperature above the decomposition temperature of the said organic salt. The size of the nanoparticles obtained is preferably 1-100 nm.

EFFECT: improvement of the method of obtaining.

4 cl, 11 ex, 4 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method for hydroconversion of heavy oil selected from crude oil, heavy crude oil, asphalt from tar sands, distillation residues, distillation heavy fractions, deasphalted distillation residues, plant oils, oils obtained from coal and oil shale, oils obtained by thermal decomposition of wastes, polymers, biomass, involving feeding heavy oil into a hydroconversion zone, said hydroconversion being carried out in one or more fluidised-bed reactors in which hydrogen is fed, in the presence of a suitable heterogeneous supported hydrogenation catalyst which is made of a support and an active phase which consists of a mixture of sulphides, one of which is obtained from a group VIB metal and at least one more is obtained from a group VIII metal, and a suitable hydrogenation catalyst which is a Mo or W sulphide-based catalyst, which is nanodispersed in said heavy oil, and feeding a stream from the hydroconversion zone into a separation zone in which the separated liquid fraction containing the nanodispersed catalyst is recycled into the fluidised-bed reactor(s).

EFFECT: high degree of hydrodenitrogenation and hydrodesulphurisation, high output of the diesel fraction.

15 cl, 1 dwg, 1 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: catalyst contains 0.3-1 wt % platinum which is deposited on a non-porous or porous carbon support. The supported platinum is in the form of particles with size less than 4 nm, wherein more than 80 wt % of the platinum from the total amount of metal is concentrated in the form of X-ray amorphous particles. The invention also relates to methods preparing and regenerating the described catalyst and a method of producing hydroxylamine sulphate via catalytic selective hydrogenation of nitrogen oxide in a sulphuric acid medium in the presence of said catalyst.

EFFECT: use of the disclosed catalyst improves selectivity of formation of hydroxylamine sulphate during catalytic hydrogenation of nitrogen oxide in sulphuric acid solutions on platinum catalysts supported by non-porous or porous carbon supports.

5 cl, 3 dwg, 4 tbl, 12 ex

FIELD: chemistry.

SUBSTANCE: invention relates to extraction of heteropoly acids from catalysts. Described is a method of extracting heteropolytungstic acid from a spent catalyst which contains heteropolytungstic acid deposited on a support, involving (a) bringing the spent catalyst into contact with an extractant selected from water, methanol, ethanol and a mixture of any two or more thereof, for a period of time sufficient for extraction of at least a portion of heteropolytungstic acid; (b) separating the extractant, which contains heteropolytungstic acid, from the treated spent catalyst; (c) bringing the extractant, which contains heteropolytungstic acid, into contact with a strongly acidic ion-exchange resin to remove corroded metals contained therein and (d) separating the treated extractant which contains heteropolytungstic acid.

EFFECT: high efficiency of the method.

11 cl, 1 tbl, 21 ex

FIELD: chemistry.

SUBSTANCE: method involves treating a heavy epoxidate fraction with alkali solution and treating the formed spent alkali stream with an extractant, followed by deposition of molybdenum trisulphide. At the extraction step, a washing solvent is added to the alkali stream, said washing solvent being C5-C8 alcohols, aldehydes, ketones or mixtures thereof.

EFFECT: method enables to obtain solutions with higher molybdenum concentration, increases degree of molybdenum extraction, reduces contamination of process effluents, which then improves quality of the molybdenum trisulphide precipitate and simplifies the waste treatment process.

1 tbl, 10 ex

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing organic carbonates and carbamates. Described is an alcoholysis method, involving: feeding reactants and a trace amount of a soluble organometallic compound, which is soluble in the reactants, into a reactor containing a solid alcoholysis catalyst, wherein the trace amount ranges from about 1 ppm to about 3000 ppm with respect to total mass of the added reactants; where the soluble organometallic compound and the solid alcoholysis catalyst each independently contains a Group II to Group VI element. Described is a method of producing dialkylcarbonates, involving: feeding an alcohol and an alcoholysis reactant, containing at least one compound from urea, organic carbamate and cyclic carbonate, in the presence of the catalyst system described above. Described is a method of producing diarylcarbonate, involving: feeding an aromatic hydroxy compound and dialkylcarbonate in the presence of the catalyst system described above. Described is a method of producing alkylarylcarbonate, involving: feeding an aromatic hydroxy compound and dialkylcarbonate in the presence of the catalyst system described above. Described is a method of producing biodiesel, involving: feeding an alcohol and glycerine in the presence of the catalyst system described above The methods described above involve reaction of a spent solid alcoholysis catalyst, involving: removal of polymer materials deposited on the catalyst; and redeposition of catalytically active metals on the solid catalyst.

EFFECT: longer duration of the cycle of the alcoholysis method.

36 cl, 7 tbl, 18 dwg, 14 ex

FIELD: chemistry.

SUBSTANCE: invention relates to regeneration of spent metal-containing catalysts for organic synthesis. Described is a method of regenerating metal oxide industrial catalysts for organic synthesis, comprising a support with oxides of Cu and Bi or Cu, Ni and Cr, the method involving treatment of the spent catalyst with salicylalaniline solution in dimethyl formamide with concentration between 0.1 and 0.5 mol, filtration of the solution of the complex compound, which is adsorbed directly on the cleaned support which is silica gel or zeolite obtained after filtration, and the obtained adsorbent undergoes thermal decomposition on the surface of the support at temperature 150-200°C.

EFFECT: described catalyst regeneration method enables multiple regenerations, lowers power consumption of the regeneration process while simplifying the process and without aggressive and toxic media.

2 ex

FIELD: process engineering.

SUBSTANCE: invention relates to method of producing, circulating or reusing catalyst material-carrier like that used in Fisher-Tropsch process. Method of producing catalyst material-carrier from used Fischer-Tropsch catalyst containing titanium dioxide and cobalt comprises: crushing of used catalyst on carrier, leaching of at least 50 wt % of cobalt from crushed used catalyst, and additional crushing of produced carrier material. Invention covers also catalyst carrier material produced by above described method, its application, catalyst containing said carrier material and method of producing hydrocarbons using catalyst containing said carrier material.

EFFECT: possibility to use used carrier materials, usually rejected, method of efficient circulation of active component.

12 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of recycling wastes from catalytic epoxidation of olefins using organic hydroperoxides, which involves extraction and treatment of the heavy epoxidate fraction with an alkali solution and treatment of the resultant spent alkaline stream with an extractant. The invention proposes addition of a ligand which forms a molybdenum organometallic complex to the spent alkaline stream and extraction from the spent alkaline stream of a fraction containing propylene glycol, acetophenone, ethylbenzene, phenol, methyl phenyl carbinol and the molybdenum organometallic complex formed, treatment with an extractant at T≥Tcr and P≥Pcr with subsequent splitting of the extract into fractions through stepped reduction of pressure from Pextr to P<Pcr with number of pressure reduction steps equal to the number of fractions of the components which should be obtained, taking into account the molybdenum organometallic complex, where Tcr, Pcr are critical temperature and pressure values of the extractant and Pextr is extraction pressure.

EFFECT: maintaining high degree of extracting molybdenum from the spent alkaline stream regardless of its composition and possibility of extracting fractions of components contained in the spent alkaline stream.

1 dwg, 3 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: method involves treatment of heavy olefin fraction by an alkali solution, processing of obtained discharge alkali flow by extragent, and further precipitation of molybdenum trisulfide by precipitator. According to invention, sodium hydrosulfide is applied as molybdenum trisulfide precipitator. The method allows regulation of molybdenum trisulfide precipitator feed, reduction of precipitation reactor dimensions and energy consumption of heating and stirring, significant reduction waste and hydrogen sulfide discharge at high molybdenum extraction degree of 90.5-97.6%.

EFFECT: improved method of molybdenum extraction from products of catalytic olefin epoxidation by organic hydroperoxides.

6 ex

FIELD: industrial organic synthesis.

SUBSTANCE: molybdenum is recovered from catalytic olefin epoxidation products using organic hydroperoxides. Method comprises treating heavy epoxidate fraction with alkali solution, treating resultant spent alkali stream with extractant, and subsequent precipitation of molybdenum trisulfide using sulfur-alkali effluents formed in production of olefins by pyrolysis of hydrocarbon feedstock.

EFFECT: increased molybdenum recovery degree and simplified operation.

11 ex

FIELD: process engineering.

SUBSTANCE: invention relates to production of automotive catalysts, particularly, to their recovery. Method or recovery comprises thermal decomposition of pyrocarbon, dissolution of platinoids by the mix of hydrochloric acid and nitric acid, or 30%- hydrogen peroxide in closed cycle. Note here that dissolution process is analysed for completeness of platinoids extraction while excess nitric acid and hydrogen peroxide are removed by reducing agents. To extract platinoids, acid solution is subjected to ionic flotation extraction by cationic surfactants. Then, extract with platinoid precursors is separated from acid solution containing cerium and aluminium ions to evaporate extractant. Platinoid precursors are dissolved in water to produce micellar solution, added is hydrazine hydrate to reduce platinoids in alkaline medium to metal nanoparticles on mixing by ultrasound. Dispersion is centrifuged to drain aqueous solution and rinse centrate by alcohol to proceed with centrifugation to obtain nanopowder of platinoids. Acid solution containing ions of cerium and aluminium is neutralised by potassium hydroxide to pH=8-9. Potash soap of higher carbonic acids is added to separate cerium and aluminium soaps. The latter are dissolved in micellar aqueous solution of sodium dodecylsulphate to make the mix of cerium and aluminium hydroxides and centrifuge obtained dispersion. Precipitate of cerium and aluminium hydroxides are rinsed by water to be centrifuged again so that precipitate is separated and air dried. Then, said precipitate is calcined at 400°C to obtain nanopowders CeO2 and γ-Al2O3 and CeO2.

EFFECT: new catalysts produced with no extra treatment.

5 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention concerns method of hydrotreating catalyst activation containing metal oxide of group VIB and metal oxide of group VIII containing contacting catalyst, acid and organic additive with boiling point within 80-500°C and water solubility, at least, 5 gram per litre (20°C, atmospheric pressure), optionally with following drying in the environment providing at least, 50% of the additive remains in the catalyst. There are disclosed hydrotreating catalyst produced by the method described above, and method of hydrotreating raw hydrocarbons there after applied.

EFFECT: higher activity of both raw hydrotreating catalyst, and utilized hydrotreating catalyst being regenerated.

20 cl, 8 ex

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