Method of processing sulphur-containing oil sludge

FIELD: oil industry.

SUBSTANCE: present invention relates to a method of processing sulphur-containing oil sludge, which can be used in oil and oil refining industry. Method involves separation of oil sludge water and mechanical impurities, contacting prepared sludge with a catalyst system, consisting of a mixture of an aqueous solution of hydrogen peroxide, alkali metal or ammonium salts -vanadates, molybdates, tungstates, vanadyl sulphate and interphase carrier, taken in amounts to provide molar ratio of metal to sulphur, contained in oil sludge of 1: (100–500), hydrogen peroxide to sulphur, contained in oil sludge (1-3):1, interphase carrier to sulphur, contained in oil sludge of 1:(20-100), at temperature of 40–80 °C for 3–8 hours, with subsequent separation of aqueous phase from product of contacting and heating remaining product at a temperature of 300–400 °C for 3–5 hours to produce end oil product, wherein contacting is carried out with exposure of sludge with catalyst system to electromagnetic radiation at frequency 40–55 MHz, power 0.2–0.5 kW.

EFFECT: proposed method enables to produce an end product with content of sulphur, enabling use thereof without additional hydrofining, using simplified technology.

3 cl, 2 ex

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: apparatus for regenerating spent transformer oil includes a waveguide at the ends of which there are stop rings and a hollow cone with a hole at the vertex, capable of moving between the stop rings through a rod which is connected to the base of the hollow cone through a sliding ring.

EFFECT: effective regeneration of transformer oil through coagulation of molecules of water and ageing products with a rotating electromagnetic field.

1 tbl, 7 dwg

FIELD: process engineering.

SUBSTANCE: proposed method comprises placing hollow truncated cone with hole at waveguide end top to place waveguide with hollow truncated cone in electric unit filled with transformer oil. Note here that ions flow down from surfaces of waveguide and hollow truncated cone to induce rotary magnetic field in ambient space. Free radicals in chaotic state come to rotary magnetic lines of force. Distance between free radicals decreases to make free radicals integrate into clusters for recombination of free radicals into neutral molecules. This results in decrease in concentration of free radicals in transformer oil. It brings about transformer oil oxidation retardation.

EFFECT: retardation of transformer oil oxidation by recombination of free radicals.

1 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: according to the method of crude oil demetallisation and desulfurisation in flow, crude oil is delivered to the first electrolyser for demetallisation of intact oil, then oil under treatment is delivered to the second electrolyser to remove sulphur; crude oil in flow is treated electrochemically using alternating asymmetric current with density 5-10 mA/dm2 with asymmetry (relation of negative half-period current density to positive half-period current density Ik/Ia) 8-10 and current frequency determined by the formula: f=fH1/10An, where I is frequency of released element; A is atomic weight of released element; fH is frequency of hydrogen release; n is valency of released element.

EFFECT: high efficiency of processing methods, the ease of production and low costs of equipment for the method implementation, its operation upon complex conditioning of oil from sulphur, demetallisation of crude oil in flow meeting ecological requirements.

2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: method for dewaxing petroleum products is realised by mixing material with 0.05-0.25 wt % surfactant, thermal treatment of the obtained mixture, cooling to dewaxing temperature, followed by separation of paraffin hydrocarbons in a constant electric field. The surfactant used is a depressant which is a product of reaction of stearic acid and polyethylene polyamines in weight ratio of 4.5:1.0, respectively. 0.05-0.15 wt % higher fatty alcohols of the C10-18 fraction are further added to the petroleum product as a dewaxing activator.

EFFECT: high output of dewaxed diesel fuel and low turbidity point thereof.

FIELD: chemistry.

SUBSTANCE: invention refers to method for recovery of waste transformer oil which is contained in reservoir and its purification from ageing products, and the above method involves the following operations: installation of waveguide in which a flattened hollow cone is located above transformer oil reservoir. At that, top of flattened hollow cone is directed to transformer oil coaxially to the reservoir. Oil recovery is performed due to action of water ions and molecules dropping off the surface of waveguide and hollow flattened cone and enveloping the above surfaces, due to which interaction of water ions and molecules with radicals of transformer oil, coagulation of ageing products and their settlement at the reservoir bottom occurs; as a result, recovery of waste transformer oil and its purification from ageing products is performed.

EFFECT: method allows improving electrical strength of waste transformer oil, decreasing moisture content and increasing product purity class by means of coagulation of ageing products in rotating ionic field.

1 cl, 2 ex, 2 tbl, 4 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to liquid hydrocarbon purification method in which preliminary separation and coagulation is performed on metal porous partition of the filter at twisting of continuous medium flow via spiral generatrixes made from dielectric material and installed in a gap between its plastic housing and partition and action of electric field when static charge is induced on inner surface of housing with induction of the charge of opposite sign on outer surface of metal porous partition, there tangentially supplied is flow with the main mass of mechanical impurities and water with size which is more than nominal pore size of prefilter to the separator shell with flow swirling between its inner wall reinforced with foamed metal - high-porous cellular material (HPCM) with coagulation properties, and shaped guide from plastic material fixed on pylons from dielectric material in upper part of the shell with induction of electric field in a gap between the latter; sediment is transported back to the pump inlet, and filtrate is supplied with additional pump for separation on porous partition of filter with coalescing properties from polymer of spatial-globular structure (SGS); at that, the rest part of mechanical impurities and water with size which is more than nominal pore size of filter is constantly supplied with turbulent medium flow to supply main line of separator; purified filtrate is cooled in heat exchanger with further removal of water fog on fine filter from SGS of polymer.

EFFECT: increasing purification efficiency of hydrocarbon media.

3 dwg, 1 tbl, 1 ex

FIELD: machine building.

SUBSTANCE: invention refers to diesel fuel, after-treatment of which is performed with constant magnetic field. Also, present sulphur, nitrogen containing hydrocarbons, paraffin, and unnecessary suspensions are concentrated on surface of magnetic trap corresponding to a thin wire inserted into pipe (a case of the magnetic trap). The invention also refers to the procedure of after-treatment of diesel fuel where the magnetic trap is extracted for regeneration, is subjected to regeneration and reinstalled for operation.

EFFECT: improved characteristic of diesel fuel, increased efficiency of engine.

2 cl, 2 ex, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: invert emulsion is supplied to the device at values of temperature of the value at which oil congelation occurs; at that, for enlargement and merging of drops of water-oil emulsion there used is magnetic flux changing in time, which is induced by supply of alternating voltage of 110 to 3000 V for water-oil emulsion with alternating electric current in inductor winding through housing of the device, which is made from dielectric material.

EFFECT: reducing overall dimensions of devices for electric dehydration and demineralisation; improving efficiency of oil dehydration and demineralisation process; performing the heating process of oil emulsions, their dehydration and demineralisation with induction method; performing the demulsification process at low voltage, which improves electrical safety, allows avoiding the use of additional transformers, excluding the possibility of short circuits caused by increased oil water content.

7 tbl, 2 dwg

FIELD: oil and gas production.

SUBSTANCE: invention refers to procedure of clarification of oil distillate under effect of magnetic field consisting in clarification of oil distillate with N-methyl-pyrrolidone, also, oil distillate is subjected to effect of constant magnetic field with induction 0.05-0.25 tesla. Force lines of constant magnetic field are directed perpendicular to vector of flow of oil distillate, while linear rate of flow in an active gap of a magnetizator amounts to 0.01-03 m/sec, whereupon oil distillate is mixed with N-methyl-pyrrolidone.

EFFECT: improved quantitative and qualitative indices of finish product, reduced critical temperature of oil distillate dissolving in N-methyl-pyrrolidone and reduced temperature of extraction.

2 cl, 4 ex, 2 tbl

FIELD: oil and gas production.

SUBSTANCE: invention refers to procedure for treatment of hydrocarbon fuel. In effect the procedure consists of multitude of shock waves with various nominal frequencies transmitted to fuel by motion of magnetic receptive body in contact with hydrocarbon fuel at rates and intensity facilitating increased efficiency of fuel combustion. Also, relative motion of a body is caused by effect of pulse magnetic field onto the body. The invention also refers to the procedure of engine operation, to the device for treatment of hydrocarbon fuel and to the internal combustion engine.

EFFECT: raised efficiency of fuel combustion, reduced fuel volume required for engine operation.

13 cl, 1 ex, 1 tbl, 2 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to processing liquid hydrocarbons for converting acidic impurities into less odorous compounds. The invention relates to a method of processing a purified finished oil product containing mercaptans, which includes (a) mixing the purified finished oil product containing mercaptans with an oxygen-containing gas to form a mixture and feeding said mixture onto a vertical screen consisting of vertically suspended nonporous fibres; (b) feeding an aqueous liquid treatment solution onto said screen, where the liquid treatment solution is combined with the mixture from step (a), which flows downwards on the vertically suspended fibres, wherein the liquid treatment solution is obtained by mixing: (i) an alkali metal hydroxide; (ii) a cobalt phthalocyanine catalyst; (iii) either naphthenic or ethylhexanoic acid; (iv) one component selected from cresol, cyclohexanol, propylene glycol, isopropanol or cresylic acid; and (v) water. Catalytic oxidation of mercaptans to disulphide oils and separation of the purified finished oil product and disulphide oil in the form of a refined hydrocarbon product from the liquid treatment solution and oxygen-containing gas are performed. The invention also relates to a two-step method of processing the purified finished oil product.

EFFECT: efficient purification of hydrocarbons.

19 cl, 1 dwg, 4 tbl, 12 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining a finely dispersed liquid form of a phthalocyanine catalyst for demercaptanisation of oil and gas condensate, which includes successive precipitation, in an aqueous medium, of products of sulphonation of cobalt phthalocyanine or chlorine-substituted derivatives thereof and cobalt phthalocyanine adducts or chlorine-substituted derivatives thereof with sulphuric acid - "sulphates" to form a mixture of disulphonic acids of cobalt phthalocyanine or chlorine-substituted derivatives thereof and finely dispersed cobalt phthalocyanine particles and chlorine-substituted derivatives thereof. The next treatment of the aqueous paste of the obtained mixture with alkanolamines results in dissolution, in water, of disulphonic acids of cobalt phthalocyanine or chlorine-substituted derivatives thereof and partial adsorption on the surface of particles of cobalt phthalocyanine or chlorine-substituted derivatives thereof to form a stable finely dispersed liquid form of the catalyst.

EFFECT: method of producing a catalyst for demercaptanisation of oil and gas condensate in a stable liquid form, with high catalytic activity, which avoids the need for preparation thereof by the consumer, improves labour conditions for the producer and the consumer of the product.

1 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: claimed is a method of preparing a heterogeneous phthalocyanine catalyst for oxidation of sulphur-containing compounds by an activation of non-woven lavsan by microwave radiation with a frequency of 2450 MHz, power 500-2000 W for 3-15 minutes, processing the activated material in a solution of cobalt tetra-4-[(4'-carboxy)phenylsulpfanyl]phthalocyanine with a concentration of 0.2-0.6 g/l for 2-4 hours and further stand of the material in a sodium hydroxide solution at pH 8.0-8.5 for 40-80 minutes.

EFFECT: increased catalytic activity of the target product and simplification of the method of its preparation.

1 tbl

FIELD: chemistry.

SUBSTANCE: described is a method of producing a nanostructured catalyst for demercaptanisation of oil and gas condensate based on cobalt phthalocyanine derivatives and chlorine-substituted products thereof, wherein starting phthalocyanines obtained by grinding in a ball mill at 100-120°C in the presence of alcohols of general formula R-(OCH2- CH2)n-OH, where if n=1 R=C6H5, C4H9; if n=2 R=H, C2H5, nanoparticles of cobalt phthalocyanine and chlorine-substituted derivatives thereof are treated with concentrated aqueous solutions of alkanolammonium salts of disulphonic acids of cobalt phthalocyanine and chlorine-substituted derivatives thereof, followed by stabilisation of the catalyst with linear polyesters (polyethylene glycols).

EFFECT: high catalyst activity.

2 cl, 5 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to sulphoxidation method of hydrocarbons, which involves hydrocarbon flow including at least one sulphur compound; oxidiser; catalyst including the metal compound represented with general formula MmOm(OR)n; and bringing into contact of hydrocarbon flow with oxidiser in presence of catalyst, thus causing the oxidation of at least one sulphur compound, where M represents metal complex, R represents carbon group having at least 3 carbon atoms, where at each occurrence of R, the latter represents a replaced alkyl group containing at least one OH group, replaced cycloalkyl group containing at least one OH group, replaced cycloalkylalkyl group containing at least one OH group, replaced heterocyclyl group containing at least one OH group, or heterocyclylalkyl containing at least one OH group, subindices "Type" represent integer numbers of approximately 1 to approximately 8. Invention also refers to other methods of sulphoxidation of hydrocarbons, polymer catalytic composition for sulphoxidation of hydrocarbons, which catalyses sulphoxidation to hydrocarbon sulphoxidation reagent.

EFFECT: economic and effective catalytic desulphurisation of sulphur-containing flows of hydrocarbons.

42 cl, 12 dwg, 12 tbl, 48 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a catalytic composition containing disulphonic acid of cobalt phthalocyanine or chloro- and oxy-substituted derivative thereof, an alkaline agent, a synergetic additive and water, wherein the alkaline agent used is alkanolamine of formula (CH3)n-N-(CH2-CH2-OH)3-n where n=0-2, and the synergetic additive used is a linear (polyethylene glycol) or cyclic (crown ether) polyether, with the following ratio of components in wt %: disulphonic acid of cobalt phthalocyanine or chloro-and oxy-substituted derivative thereof 15-25, alkanolamine 7-25, polyethylene glycol or crown ether 0.5-4, water - up to 100.

EFFECT: high specific catalytic activity in demercaptanisation processes.

7 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of removing hydrogen sulphide and mercaptants from oil and gas condensate by treating starting material with 5-30% aqueous solution of hydrogen peroxide, taken in amount of 3-8 kg per ton of the material, at temperature 10-30°C and pressure of up to 1.5 MPa, in the presence of a catalyst, characterised by that the catalyst used is bis-sulphoxides of molybdenum peroxocomplexes, where the catalyst is taken in amount of 0.01-0.05 g per ton of oil or gas condensate and is added to the material inform of a solution in aqueous solution of hydrogen peroxide.

EFFECT: avoiding use of expensive and scarce activating additives, less amount of the catalyst used, high degree of purity of material from hydrogen sulphide and mercaptants.

14 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of purifying hydrocarbon fractions from mercaptans by treating raw material with air in the presence of a catalyst - copper complex in form of a complex of formula CuIICl1-2(L)1-2, where L is hydroxyalkylpyridine of general formula CnH2n(OH)C5H4N, where n=2-4.

EFFECT: simplification of purification technology owing to preparation of synthetic catalyst which enables to carry out demercaptanisation in the absence of a water alkali.

2 cl, 20 ex, 3 tbl

FIELD: oil and gas production.

SUBSTANCE: hydrogen sulphide containing oil (see Fig.1) is supplied in a charge separator 2 equipped with a gas bubbler flask 4 where due to pressure reduction and hydrocarbon gas blowing and/or exhaust air, desorption removal of a portion of hydrogen sulphide is observed. Partially refined oil with the introduced oxidation catalyst (see positions 5-10) is supplied by a pump 12 to a reactor 15 where it is additionally purified from hydrogen sulphide and light mercaptan due to their oxidation by introduced air. The reaction mixture is supplied in the high pressure separator 16 ensuring partial separation of exhaust air due to pressure reduction to 0.2 MPa which from the top of the separator is supplied through the gas bubbler flask 4 in the charge separator 2 for blowing hydrogen sulphide from oil. Further it is supplied in the low pressure separator 22 wherefrom the refined and degassed oil is supplied in the first buffer reservoir 25. After filling, oil from the separator is supplied to parallel second reservoir 26, and the filled reservoir 25 is settled for at least 3 hours for water sediment containing water-soluble products of hydrogen sulphide oxidation. In the other version of installation (see Fig.2) the oil refined from hydrogen sulphide, with the pump 27 is supplied in electrodehydrator 30 for separation of emulsion water and salts.

EFFECT: invention allows reducing the concentration of total sulphur, water, salts and products of hydrogen sulphide oxidation in commodity oil and reducing expenses for installation operation.

15 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: described is a catalyst for oxidative demercaptanisation of oil and oil products which is a derivative of phthalocyanine, distinguished by that it is a supramolecular ion-associate of oppositely charged phthalocyanines with structural formula I, I:(R+)nPcM, where R=-CH2N+(CH3)2CH2CH2OHCl- (choln- PcM), n=2÷8, M=Co, Fe; (pymn-PcM), n=2÷8, M=Co, Fe; (R-)nPcM, where R=-CH2P(=O)(O-Na+)2(phosn-PcM), n=8, M-Co and II, II:(R-)nPcM, where R=R1=R2=-C(O)O-Na+ (carb8-PcM), n=8, M=Co, Fe; R=R1=-C(O)O-Na+, R2=H (carb4-PcM), n=4, M=Co; R= R1=-S(O)2O-Na+ , R2=H (sul4-PcM), n=4, M=Co. Also described is a method of oxidative catalytic demercaptanisation of oil and oil products with atmospheric oxygen in an alkaline medium in the presence of the above described catalyst at room temperature.

EFFECT: carrying out the process in mild conditions with high substrate conversion to 98 percent.

3 cl, 2 tbl, 26 ex

FIELD: oil processing industry; petrochemical industry; methods of production of bitumen.

SUBSTANCE: the invention is pertaining to the field of reprocessing of the wastes of the oil processing industry and the petrochemical industry, in particular, to reprocessing the acid sludges and can be used for production of the bitumens applied in the road construction, in production of roofing and insulating and other materials. Substance: the acid sludge preferentially with the contents of sulfuric acid, which is not exceeding 7 % from mass of the residual acid sludge, is heated in the flowing reactor at the temperatures of the cracking and below the temperature of the coke formation. The nonvolatile hydrocarbon fraction is withdrawn from the reactor. The components with the boiling point above 200°C are extracted from the vapor hydrocarbon fraction and mixed with the non-volatile hydrocarbon fraction.

EFFECT: the invention ensures production of the bitumens applied in the road construction, in production of roofing, insulating and other materials.

2 cl, 1 dwg, 2 ex

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