Method of diesel fuel hydrocleaning

FIELD: chemistry.

SUBSTANCE: method of hydrotreating diesel fuel at a temperature of 340-390°C, pressure 3-9 MPa, volumetric consumption of raw materials 1.0-2.5 h-1, volume ratio hydrogen/raw materials 300-600 m3/m3 in the presence of a regenerated catalyst having a pore volume of 0.3-0.8 ml/g, a specific surface area of 150-280 m2/g, an average pore diameter of 6-15 nm, including molybdenum, cobalt, sulfur and a carrier in its composition is described. Molybdenum and cobalt are contained in the catalyst in the form of a mixture of complex compounds Co(C6H6O7), H4[Mo4(C6H5O7)2O11], H3[Co(OH)6Mo6O18], sulfur is contained in the form of sulfate anion SO42-, in the following concentrations, wt %: Co(C6H6O7) - 5,1-18,0; H4[Mo4(C6H5O7)2O11] - 7,5-15,0; H3[Co(OH)6Mo6O18] - 4,3-19,0; SO42- - 0,5-2,30; carrier - the rest. Cobalt citrates can be coordinated to molybdenum citrate H4[Mo4(C6H5O7)2O11] and to 6-molybdocobaltate H3[Co(OH)6Mo6O18].

EFFECT: invention makes it possible to produce hydrotreated diesel fuels containing not more than 10 ppm of sulfur in the presence of regenerated catalysts.

3 cl, 2 tbl, 6 ex

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to catalyst of selective hydrodesulphurisation of olefin-containing hydrocarbon raw material. Said catalyst consists of compounds of metals Co or Ni, Mo and Na or K, applied on carrier. Claimed catalyst contains bimetal complex compound of metals Co or Ni, Mo and Na or K, carboxylic acid, containing, at least, one carboxyl group and 1-20 carbon atoms; it has specific surface 180-350 m2/g, volume of pores 0.3-1.1 cm3/g, average pore diameter 5.5-11.0 nm. Invention relates to method of preparing claimed catalyst, as well as to process of selective hydrodesulphurisation with its application.

EFFECT: claimed catalyst makes it possible to obtain petrol with ultralow content of sulphur and preservation of value of its octane number at initial level.

14 cl, 3 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of preparing a catalyst for deep hydrofining of oil fractions. The present method includes impregnating an aluminium oxide support with a solution of compounds of metals of groups VIII and VI with pH of the impregnating solution of 1.5-5.0, vacuum treatment of the support before contact thereof with the impregnating solution, using impregnation at high temperature. The starting compounds used for preparing the impregnating solution are sodium salts Mo and one of modifiers X selected from the group (B, P, Si, V, Zn, Ge, Sn), which are soluble in water in molar ratio Mo/X=12/1, after which the solution is passed through a column with a cationite in H+ form and Co or Ni acetate is added to said solution.

EFFECT: disclosed method enables to obtain catalysts having high activity and selectivity with respect to hydrodesulfurisation, hydrodenitrogenation and hydrogenation of olefins and aromatic compounds.

2 cl, 5 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: invention refers to a catalyst for hydrocarbon material hydroprocessing. The presented catalyst comprises an amorphous alumina-based carrier, phosphorus, at least one dialkyl(C1-C4)succinate, acetic acid and a functional group with a hydrogenation/dehydrogenation ability containing at least one group VIB element and at least one group VIII element specified in cobalt and/or nickel. The Raman spectrum of the above catalyst has characteristic bands of at least one Keggin heteropolyanionwithin the range of 990 and/or 974 cm-1, characteristic bands of said succinate and a principal characteristic band of acetic acid within 896 cm-1. The invention also refers to a method for producing this catalyst and to the catalyst produced by this method, as well as to a method for hydrocarbon material hydroprocessing in the presence of this catalyst.

EFFECT: presented catalyst possesses overactivity shown in hydroprocessing by the synergetic action of a combination of acetic acid and dimethylsuccinate.

24 cl, 2 dwg, 5 tbl, 12 ex

FIELD: chemistry.

SUBSTANCE: catalyst element contains a mixture of high-silica ceolites hydrating transition metals: nickel, tungsten and/or molybdenum, a binding agent and additionally contains a promoter that is a boric oxide or phosphorus oxide, or a mixture thereof. A mixture of high-silica ceolites is a triple mixture of ceolites: wide-pore faujasite - ultrastable USY, mesoporous ZSM-12 or ZSM-22, as well as pentasil CVN or ZSM-11; if the acid site content in ceolites falls within the range of 350-1,030 mcmole/g, the binding agent is aluminium oxide. The catalyst element has the following composition, wt %: ceolite mixture (acidic ingredient) 60.0-80.0; hydrating metals 6.0-20.0; promoter 0.5-4.0; aluminium oxide up to 100.0. What is declared is a method for isodewaxing diesel distillated with using the developed catalyst element; the diesel distillates are hydrotreated straight diesel distillates; the process is performed at a temperature of 250-400°C, a pressure of 2-5 MPa, volume fresh feed rate of 2-4 hour-1, in ratio of H2/feed of 400-1,200 nm3/m3.

EFFECT: isodewaxing catalyst element containing hydrating transient metals, and the method for isodewaxing with the use thereof enable producing high-yield waxy winter and Arctic diesel fuels.

5 cl, 4 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method for hydrotreatment of raffinates of oil fractions in the presence of a catalyst system, followed by deparaffination of the product with a solvent. Said catalyst system contains nickel, cobalt, molybdenum, tungsten and aluminium oxides. Hydrotreatment of oil raffinates is carried out by contacting material at the first step with the catalyst, with the following content of components, wt %: nickel oxide - 3.2-5.1; tungsten oxide - 20.0-31.5; phosphorus oxide - 0.5-0.8; aluminium oxide - up to 100; at the second step, contacting products from the first step with the catalyst with the following content of components, wt %: cobalt oxide - 5.0; molybdenum oxide - 19.0; phosphorus oxide - 0.8; aluminium oxide - up to 100. The volume ratio of catalysts at the first and second steps is equal to 1:1-1:11, and operating conditions at the steps are as follows: temperature 300-390°C, pressure 4.0-5.0 MPa, volume rate of feeding material 0.5-2.0 h-1, circulation rate of hydrogen-containing gas (Kc) 500-1000 nm3/m3 material.

EFFECT: disclosed method improves the quality of deparaffinated base oils on content of sulphur and saturated hydrocarbons.

2 tbl, 6 ex

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method of HC feed stock treatment including: mixing of mineral HC feed stock with boiling point T5 at least about 340°C and sulphur content from 200 to 20000 wppm, with output flow of the conversion stage with sulphur content about 50 wppm or below, with production of the mixed HC feed stock; hydraulic cleaning of the mixed HC feed stock at the hydraulic cleaning stage by the mixed HC feed stock treatment using the hydraulic cleaning catalyst under the hydraulic cleaning conditions including temperature from 260°C (500°F) to 427°C (800°F), total pressure from 3.4 MPa(a) (500 psig) to 20.7 MPa(a) (3000 psig) and liquid hourly space velocity (LHSV) from 0.3 h-1 to 5.0 h-1, with production of the hydraulically cleaned output flow with sulphur content about 50 wppm or below; separation to cuts of the hydraulically cleaned output flow with production of at least kerosene cut with sulphur content about 10 wppm or below, diesel cut with sulphur content about 20 wppm or below and bottom cut with boiling point T5 at least 355°C; at that the boiling point profile of the hydraulically cleaned output flow corresponds to at least appr. 40% of conversion of HC feed stock relatively to conversion start, corresponding to boiling point T5 of the bottom cut, and conversion of part of the bottom cut at the conversion stage by the treatment using the dewaxing catalyst at the conversion conditions including temperature from 200°C to 450°C, total pressure from 0.5 MPa(a) (5 barg) to 30 MPa(a) (300 barg) and LHSV from 0.05 h-1 to 10 h-1, with production of the output flow of the conversion stage.

EFFECT: method ensures diesel fuel production with low sulphur content.

13 cl, 4 dwg, 8 tbl, 2 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: chemistry.

SUBSTANCE: method includes stage of contact of pyrolysis oil, produced from biomass, with first catalyst of oxygen removal in presence of hydrogen under first, preliminarily set conditions of hydropurification with formation of first effluent stream of pyrolysis oil with low oxygen content. First catalyst of oxygen removal contains neutral catalytic carrier, nickel, cobalt and molybdenum. First catalyst of oxygen removal contains nickel in quantity from 0.1 to 1.5 wt % in terms of oxide. Version of method is also claimed.

EFFECT: extension of assortment of oxygen removal methods.

10 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method of hydrofining hydrocarbon material to obtain products with low sulphur content. The invention relates to a hydrofining method which comprises converting hydrocarbon material with high sulphur content at 340-375°C, pressure of 3.5-6.0 MPa, mass flow rate of the material of 1.0-1.5 h-1, volume ratio hydrogen/material of 300-500 m3/m3 in the presence of a heterogeneous catalyst containing cobalt, nickel and molybdenum in the form of bimetallic complex compounds [Co(H2O)x(L)y]2[Mo4O11(C6H5O7)2] and [Ni(H2O)x(L)y]2[Mo4O11(C6H5O7)2], where L is a partially deprotonated form of citric acid C6H6O7; x=0 or 2; y=0 or 1; silicon in the form of amorphous aluminosilicate, aluminium in the form of γ-Al2O3 and amorphous aluminosilicate, wherein the components are in the following concentrations, wt %: in total [Co(H2O)x(L)y]2[Mo4O11(C6H5O7)2] and [Ni(H2O)x(L)y]2[Mo4O11(C6H5O7)2] - 24.5-39.0; including [Co(H2O)x(L)y]2[Mo4O11(C6H5O7)2] - 6.2-29.5; [Ni(H2O)x(L)y]2[Mo4O11(C6H5O7)2] - 6.2-29.5; amorphous aluminosilicate - 5.9-37.8; γ-Al2O3 - the balance, which corresponds to the following content in a catalyst calcined at 550°C, wt %: MoO3 - 14.0-.,0; in total CoO+NiO - 3.6-6.0; including CoO - 0.9-4.5; NiO - 0.9-4.5; amorphous aluminosilicate - 6.7-42.0; Al2O3 - the balance.

EFFECT: obtaining oil products with low residual content of sulphur when hydrofining hydrocarbon material in the presence of a catalyst containing bimetallic complexes of Mo, Co, Ni and amorphous aluminosilicate.

5 cl, 1 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: described is catalyst including into its composition cobalt, nickel, molybdenum, aluminium and silicon, with cobalt, nickel and molybdenum contained in form of bimetal complex compounds [Co(H2O)x(L)y]2[Mo4O11(C6H5O7)2] and [Ni(H2O)x(L)y]2[Mo4O11(C6H5O7)2], where L is partly deprotonated form of citric acid C6H6O7; x=0 or 2; y=0 or 1; silicon in form of amorphous alumosilicate, aluminium in form of γ-Al2O3 and amorphous alumosilicate. Components in catalyst are contained in the following concentrations, wt %: in total [Co(H2O)x(L)y]2[Mo4O11(C6H5O7)2] and [Ni(H2O)x(L)y]2[Mo4O11(C6H5O7)2] - 24.5-39.0; including [Co(H2O)x(L)y]2[Mo4O11(C6H5O7)2] - 6,2-29,5; [Co(H2O)x(L)y]2[Mo4O11(C6H5O7)2] - 6,2-29,5; amorphous alumosilicate- 5.9-37.8; γ-Al2O3 -the remaining part, which corresponds to content in annealed at 550°C catalyst, wt %: MoO3 - 14.0-24.0; in total CoO+NiO - 3.6-6.0; including CoO - 0.9-4.5; NiO - 0.9-4.5; amorphous alumosilicate- 6.7-42.0; Al2O3 - the remaining part.

EFFECT: obtaining catalyst, which has maximal activity activity in target reactions, taking place in the process of hydropurification of hydrocarbon raw material.

4 cl, 3 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: method involves, for example: (a) evaporation of said oxidised discharge stream, containing terephthalic acid, metallic catalyst, impurities, water and solvent, in the first zone of an evaporator to obtain a vapour stream and a concentrated suspension of the discharge stream; and (b) evaporation of the said concentrated suspension of the discharge stream in the second zone of the evaporator to obtain a stream rich in solvent and a high-concentration suspension of the discharge stream, where the said second zone of the evaporator has an evaporator operating at temperature ranging from 20°C to 70°C, where from 75 to 99 wt % of the said solvent and water is removed by evaporation from the said oxidised discharge stream at step (a) and (b); (c) the said high-concentration suspension of the discharge stream is filtered in a zone for separating solid products and liquid to form a filtered product and a mother liquid; (d) washing the said filtered product using washing substances fed into the said zone for separating solid products and liquid to form a washed filtered product and washing filtrate; and dehydration of the said filtered product in the said zone for separating solid products and liquid to form a dehydrated filtered product; where the said zone for separating solid products and liquid has at least one pressure filtration device, where the said pressure filtration device works at pressure ranging from 1 atmosphere to 50 atmospheres; (e) mixing water and optionally extractive solvent with the said mother liquid and with all of the said washing filtrate or its portion in the mixing zone to form an aqueous mixture; (f) bringing the extractive solvent into contact with the said aqueous mixture in the extraction zone to form a stream of extract and a purified stream, where the said metallic catalyst is extracted from the said purified stream.

EFFECT: improved method of extracting metallic catalyst from an oxidised discharge stream obtained during production of terephthalic acid.

36 cl, 3 dwg, 2 tbl, 2 ex

FIELD: industrial organic synthesis catalysts.

SUBSTANCE: invention relates to regeneration of basic anionite catalysts for process of production of alkylene glycols via hydration of corresponding alkylene oxides. Method according to invention consists in treatment of spent catalyst with aqueous solution of inorganic salts of iodine and inorganic acids or with hydroiodic acid aqueous solution.

EFFECT: achieved complete restoration of initial volume and selectivity of catalyst and thereby prolonged lifetime of expensive anionite catalyst.

1 tbl, 8 ex

FIELD: processes catalyzed by metal-phosphoro-organic ligand complexes when target product may be selectively extracted and separated from liquid product.

SUBSTANCE: Specification gives description of methods of separation of one or several products of decomposition of phosphoro-organic ligand, one or several reaction byproducts and one or several products from liquid reaction product synthesized continuously and containing one or several non-consumed reagents, catalyst in form of complex of metal-phosphoro-organic ligands, not obligatory free phosphoro-organic ligand, one or several said decomposition products of phosphoro-organic ligand, one or several said reaction byproducts, one or several said products, one or several non-polar solvents and one or several polar solvents by separation of phases where (i) is selectivity of non-polar phase for phosphoro-organic ligand relative to one or several products expressed by ratio of distribution coefficient Ef1 whose magnitudes exceeds about 2.5; (ii)is selectivity of non-polar phase for phosphoro-organic ligand relative to one or several decomposition products expressed by ratio of distribution coefficients Ef2 whose magnitude exceeds proximately 2.5; and (iii) is selectivity of non-polar phase for phosphoro-organic ligand relative to one or several reaction byproducts expressed by ratio of distribution coefficients Ef3 whose magnitude exceeds approximately 2.5 (versions). Description is also given of continuous methods of obtaining one or several products (versions) and reaction mixture containing one or several aldehyde products.

EFFECT: increased conversion of initial materials and selectivity by product; avoidance or exclusion of deactivation of catalyst.

20 cl, 2 tbl

The invention relates to an improved method of separating one or more products from the liquid reaction product containing the catalyst in the form of complex compounds of a metal with an organophosphorus ligand, optionally free organophosphorus ligand, a non-polar solvent, the polar solvent is selected from the group comprising NITRILES, lactones, pyrrolidone, formamide and sulfoxidov, and named one or more products, the method comprises (1) mixing named liquid reaction product to obtain phase separation a nonpolar phase containing the above catalyst, optionally free organophosphorus ligand and called nonpolar solvent and a polar phase, contains named one or more products and a polar solvent, and (2) the Department called the polar phase from the named non-polar phase, and named the organophosphorus ligand has a distribution coefficient between the nonpolar solvent and the polar solvent of greater than about 5, and named one or more products is the distribution coefficient between the polar solvent and the nonpolar rastvorimo of the reaction product, containing the catalyst in the form of complex compounds with metal-phosphorus metal, optionally free organophosphorus ligand, a non-polar solvent and one or more products, the method comprises (1) mixing named liquid reaction product with a polar solvent selected from the group comprising NITRILES, lactones, pyrrolidone, formamide and sulfoxidov, to obtain phase separation a nonpolar phase containing the above-mentioned catalyst, optionally free organophosphorus ligand and called nonpolar solvent and a polar phase containing named one or more products and a polar solvent, and (2) the Department called the polar phase from the named non-polar phase, and named the organophosphorus ligand and named one or more products have the distribution coefficient between the nonpolar solvent and the polar solvent of greater than about 5, and named one or more products is the distribution coefficient between the polar solvent and the nonpolar solvent of greater than about 0.5

The invention relates to the production of 1,3-propane diol by hydroformylation of ethylene oxide through the intermediate solution of 3-hydroxypropane from which to remove residual carbon dioxide and insoluble catalytic compounds of cobalt or rhodium

The invention relates to improvements in the carbonylation of methanol to acetic acid with a low content of water in the presence of registeruser catalyst component and an alkali metal for the removal of corrosion products metal

The invention relates to a new method of regenerating catalyst alkylation, which contains a sulfone component and method of removal mechanisms of alkylation catalyst, and the specified sulfon is sulfolane, and KRM-absorbent material selected from the group consisting of aluminum oxide, carbon and mixtures thereof

FIELD: chemistry.

SUBSTANCE: invention refers to Ti-chelate catalytic compound for polyaddition or polycondensation reactions involving catalysing by Lewis acid-like agents. The above catalytic compound contains: (i) 50-99 wt % of at least one compound of formula I and (ii) 1-50 wt % of at least one chelate ligand of formula

.

In formula I, R1 represents C1-C30alkyl or C2-C30alkyl, a chain of which contains one or more unattached O-atoms; Y represents or ; Y1 represents or ; Y2 represents or ; Y3 represents or ; the radical values R2-R13 for the attachment of formula I and the radical values for compounds of formulas IIa, IIb or IIc are presented in the patent claim. The invention also refers to a polymerised composition and using it, to a method for polymerising the compounds, to a coated substrate and a polymerised or cross-linked composition.

EFFECT: presented invention is producing the Ti-chelate catalytic compound with the prolonged shelf life and good photolatency of the catalyst.

15 cl, 13 tbl, 13 ex

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